Bug Fix: Reverted minifying third party libs
Bug Fix: Minification revealed 'non-safe' bundle dependancy in the application view javascript
Upgraded Chart(.min).js to v2.6.0 to fix a known bug in v2.2.1
ONOS-6803
Change-Id: I02e130611dcff26cef08bbb6885e91b348e27f69
diff --git a/web/gui/src/main/webapp/tp/Chart.js b/web/gui/src/main/webapp/tp/Chart.js
index 34f9728..24ffad0 100644
--- a/web/gui/src/main/webapp/tp/Chart.js
+++ b/web/gui/src/main/webapp/tp/Chart.js
@@ -1,10397 +1,12757 @@
/*!
* Chart.js
* http://chartjs.org/
- * Version: 2.2.1
+ * Version: 2.6.0
*
- * Copyright 2016 Nick Downie
+ * Copyright 2017 Nick Downie
* Released under the MIT license
* https://github.com/chartjs/Chart.js/blob/master/LICENSE.md
*/
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Chart = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
},{}],2:[function(require,module,exports){
-/* MIT license */
-var colorNames = require(6);
-
-module.exports = {
- getRgba: getRgba,
- getHsla: getHsla,
- getRgb: getRgb,
- getHsl: getHsl,
- getHwb: getHwb,
- getAlpha: getAlpha,
-
- hexString: hexString,
- rgbString: rgbString,
- rgbaString: rgbaString,
- percentString: percentString,
- percentaString: percentaString,
- hslString: hslString,
- hslaString: hslaString,
- hwbString: hwbString,
- keyword: keyword
-}
-
-function getRgba(string) {
- if (!string) {
- return;
- }
- var abbr = /^#([a-fA-F0-9]{3})$/,
- hex = /^#([a-fA-F0-9]{6})$/,
- rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
- per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
- keyword = /(\w+)/;
-
- var rgb = [0, 0, 0],
- a = 1,
- match = string.match(abbr);
- if (match) {
- match = match[1];
- for (var i = 0; i < rgb.length; i++) {
- rgb[i] = parseInt(match[i] + match[i], 16);
- }
- }
- else if (match = string.match(hex)) {
- match = match[1];
- for (var i = 0; i < rgb.length; i++) {
- rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
- }
- }
- else if (match = string.match(rgba)) {
- for (var i = 0; i < rgb.length; i++) {
- rgb[i] = parseInt(match[i + 1]);
- }
- a = parseFloat(match[4]);
- }
- else if (match = string.match(per)) {
- for (var i = 0; i < rgb.length; i++) {
- rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
- }
- a = parseFloat(match[4]);
- }
- else if (match = string.match(keyword)) {
- if (match[1] == "transparent") {
- return [0, 0, 0, 0];
- }
- rgb = colorNames[match[1]];
- if (!rgb) {
- return;
- }
- }
-
- for (var i = 0; i < rgb.length; i++) {
- rgb[i] = scale(rgb[i], 0, 255);
- }
- if (!a && a != 0) {
- a = 1;
- }
- else {
- a = scale(a, 0, 1);
- }
- rgb[3] = a;
- return rgb;
-}
-
-function getHsla(string) {
- if (!string) {
- return;
- }
- var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
- var match = string.match(hsl);
- if (match) {
- var alpha = parseFloat(match[4]);
- var h = scale(parseInt(match[1]), 0, 360),
- s = scale(parseFloat(match[2]), 0, 100),
- l = scale(parseFloat(match[3]), 0, 100),
- a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
- return [h, s, l, a];
- }
-}
-
-function getHwb(string) {
- if (!string) {
- return;
- }
- var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
- var match = string.match(hwb);
- if (match) {
- var alpha = parseFloat(match[4]);
- var h = scale(parseInt(match[1]), 0, 360),
- w = scale(parseFloat(match[2]), 0, 100),
- b = scale(parseFloat(match[3]), 0, 100),
- a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
- return [h, w, b, a];
- }
-}
-
-function getRgb(string) {
- var rgba = getRgba(string);
- return rgba && rgba.slice(0, 3);
-}
-
-function getHsl(string) {
- var hsla = getHsla(string);
- return hsla && hsla.slice(0, 3);
-}
-
-function getAlpha(string) {
- var vals = getRgba(string);
- if (vals) {
- return vals[3];
- }
- else if (vals = getHsla(string)) {
- return vals[3];
- }
- else if (vals = getHwb(string)) {
- return vals[3];
- }
-}
-
-// generators
-function hexString(rgb) {
- return "#" + hexDouble(rgb[0]) + hexDouble(rgb[1])
- + hexDouble(rgb[2]);
-}
-
-function rgbString(rgba, alpha) {
- if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
- return rgbaString(rgba, alpha);
- }
- return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
-}
-
-function rgbaString(rgba, alpha) {
- if (alpha === undefined) {
- alpha = (rgba[3] !== undefined ? rgba[3] : 1);
- }
- return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
- + ", " + alpha + ")";
-}
-
-function percentString(rgba, alpha) {
- if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
- return percentaString(rgba, alpha);
- }
- var r = Math.round(rgba[0]/255 * 100),
- g = Math.round(rgba[1]/255 * 100),
- b = Math.round(rgba[2]/255 * 100);
-
- return "rgb(" + r + "%, " + g + "%, " + b + "%)";
-}
-
-function percentaString(rgba, alpha) {
- var r = Math.round(rgba[0]/255 * 100),
- g = Math.round(rgba[1]/255 * 100),
- b = Math.round(rgba[2]/255 * 100);
- return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
-}
-
-function hslString(hsla, alpha) {
- if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
- return hslaString(hsla, alpha);
- }
- return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
-}
-
-function hslaString(hsla, alpha) {
- if (alpha === undefined) {
- alpha = (hsla[3] !== undefined ? hsla[3] : 1);
- }
- return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
- + alpha + ")";
-}
-
-// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
-// (hwb have alpha optional & 1 is default value)
-function hwbString(hwb, alpha) {
- if (alpha === undefined) {
- alpha = (hwb[3] !== undefined ? hwb[3] : 1);
- }
- return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
- + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
-}
-
-function keyword(rgb) {
- return reverseNames[rgb.slice(0, 3)];
-}
-
-// helpers
-function scale(num, min, max) {
- return Math.min(Math.max(min, num), max);
-}
-
-function hexDouble(num) {
- var str = num.toString(16).toUpperCase();
- return (str.length < 2) ? "0" + str : str;
-}
-
-
-//create a list of reverse color names
-var reverseNames = {};
-for (var name in colorNames) {
- reverseNames[colorNames[name]] = name;
-}
+ /* MIT license */
+ var colorNames = require(6);
+
+ module.exports = {
+ getRgba: getRgba,
+ getHsla: getHsla,
+ getRgb: getRgb,
+ getHsl: getHsl,
+ getHwb: getHwb,
+ getAlpha: getAlpha,
+
+ hexString: hexString,
+ rgbString: rgbString,
+ rgbaString: rgbaString,
+ percentString: percentString,
+ percentaString: percentaString,
+ hslString: hslString,
+ hslaString: hslaString,
+ hwbString: hwbString,
+ keyword: keyword
+ }
+
+ function getRgba(string) {
+ if (!string) {
+ return;
+ }
+ var abbr = /^#([a-fA-F0-9]{3})$/,
+ hex = /^#([a-fA-F0-9]{6})$/,
+ rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
+ per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
+ keyword = /(\w+)/;
+
+ var rgb = [0, 0, 0],
+ a = 1,
+ match = string.match(abbr);
+ if (match) {
+ match = match[1];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i] + match[i], 16);
+ }
+ }
+ else if (match = string.match(hex)) {
+ match = match[1];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
+ }
+ }
+ else if (match = string.match(rgba)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i + 1]);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(per)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(keyword)) {
+ if (match[1] == "transparent") {
+ return [0, 0, 0, 0];
+ }
+ rgb = colorNames[match[1]];
+ if (!rgb) {
+ return;
+ }
+ }
+
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = scale(rgb[i], 0, 255);
+ }
+ if (!a && a != 0) {
+ a = 1;
+ }
+ else {
+ a = scale(a, 0, 1);
+ }
+ rgb[3] = a;
+ return rgb;
+ }
+
+ function getHsla(string) {
+ if (!string) {
+ return;
+ }
+ var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hsl);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ s = scale(parseFloat(match[2]), 0, 100),
+ l = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, s, l, a];
+ }
+ }
+
+ function getHwb(string) {
+ if (!string) {
+ return;
+ }
+ var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hwb);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ w = scale(parseFloat(match[2]), 0, 100),
+ b = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, w, b, a];
+ }
+ }
+
+ function getRgb(string) {
+ var rgba = getRgba(string);
+ return rgba && rgba.slice(0, 3);
+ }
+
+ function getHsl(string) {
+ var hsla = getHsla(string);
+ return hsla && hsla.slice(0, 3);
+ }
+
+ function getAlpha(string) {
+ var vals = getRgba(string);
+ if (vals) {
+ return vals[3];
+ }
+ else if (vals = getHsla(string)) {
+ return vals[3];
+ }
+ else if (vals = getHwb(string)) {
+ return vals[3];
+ }
+ }
+
+// generators
+ function hexString(rgb) {
+ return "#" + hexDouble(rgb[0]) + hexDouble(rgb[1])
+ + hexDouble(rgb[2]);
+ }
+
+ function rgbString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return rgbaString(rgba, alpha);
+ }
+ return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
+ }
+
+ function rgbaString(rgba, alpha) {
+ if (alpha === undefined) {
+ alpha = (rgba[3] !== undefined ? rgba[3] : 1);
+ }
+ return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
+ + ", " + alpha + ")";
+ }
+
+ function percentString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return percentaString(rgba, alpha);
+ }
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+
+ return "rgb(" + r + "%, " + g + "%, " + b + "%)";
+ }
+
+ function percentaString(rgba, alpha) {
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+ return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
+ }
+
+ function hslString(hsla, alpha) {
+ if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
+ return hslaString(hsla, alpha);
+ }
+ return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
+ }
+
+ function hslaString(hsla, alpha) {
+ if (alpha === undefined) {
+ alpha = (hsla[3] !== undefined ? hsla[3] : 1);
+ }
+ return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
+ + alpha + ")";
+ }
+
+// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
+// (hwb have alpha optional & 1 is default value)
+ function hwbString(hwb, alpha) {
+ if (alpha === undefined) {
+ alpha = (hwb[3] !== undefined ? hwb[3] : 1);
+ }
+ return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
+ + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
+ }
+
+ function keyword(rgb) {
+ return reverseNames[rgb.slice(0, 3)];
+ }
+
+// helpers
+ function scale(num, min, max) {
+ return Math.min(Math.max(min, num), max);
+ }
+
+ function hexDouble(num) {
+ var str = num.toString(16).toUpperCase();
+ return (str.length < 2) ? "0" + str : str;
+ }
+
+
+//create a list of reverse color names
+ var reverseNames = {};
+ for (var name in colorNames) {
+ reverseNames[colorNames[name]] = name;
+ }
},{"6":6}],3:[function(require,module,exports){
-/* MIT license */
-var convert = require(5);
-var string = require(2);
-
-var Color = function (obj) {
- if (obj instanceof Color) {
- return obj;
- }
- if (!(this instanceof Color)) {
- return new Color(obj);
- }
-
- this.values = {
- rgb: [0, 0, 0],
- hsl: [0, 0, 0],
- hsv: [0, 0, 0],
- hwb: [0, 0, 0],
- cmyk: [0, 0, 0, 0],
- alpha: 1
- };
-
- // parse Color() argument
- var vals;
- if (typeof obj === 'string') {
- vals = string.getRgba(obj);
- if (vals) {
- this.setValues('rgb', vals);
- } else if (vals = string.getHsla(obj)) {
- this.setValues('hsl', vals);
- } else if (vals = string.getHwb(obj)) {
- this.setValues('hwb', vals);
- } else {
- throw new Error('Unable to parse color from string "' + obj + '"');
- }
- } else if (typeof obj === 'object') {
- vals = obj;
- if (vals.r !== undefined || vals.red !== undefined) {
- this.setValues('rgb', vals);
- } else if (vals.l !== undefined || vals.lightness !== undefined) {
- this.setValues('hsl', vals);
- } else if (vals.v !== undefined || vals.value !== undefined) {
- this.setValues('hsv', vals);
- } else if (vals.w !== undefined || vals.whiteness !== undefined) {
- this.setValues('hwb', vals);
- } else if (vals.c !== undefined || vals.cyan !== undefined) {
- this.setValues('cmyk', vals);
- } else {
- throw new Error('Unable to parse color from object ' + JSON.stringify(obj));
- }
- }
-};
-
-Color.prototype = {
- rgb: function () {
- return this.setSpace('rgb', arguments);
- },
- hsl: function () {
- return this.setSpace('hsl', arguments);
- },
- hsv: function () {
- return this.setSpace('hsv', arguments);
- },
- hwb: function () {
- return this.setSpace('hwb', arguments);
- },
- cmyk: function () {
- return this.setSpace('cmyk', arguments);
- },
-
- rgbArray: function () {
- return this.values.rgb;
- },
- hslArray: function () {
- return this.values.hsl;
- },
- hsvArray: function () {
- return this.values.hsv;
- },
- hwbArray: function () {
- var values = this.values;
- if (values.alpha !== 1) {
- return values.hwb.concat([values.alpha]);
- }
- return values.hwb;
- },
- cmykArray: function () {
- return this.values.cmyk;
- },
- rgbaArray: function () {
- var values = this.values;
- return values.rgb.concat([values.alpha]);
- },
- hslaArray: function () {
- var values = this.values;
- return values.hsl.concat([values.alpha]);
- },
- alpha: function (val) {
- if (val === undefined) {
- return this.values.alpha;
- }
- this.setValues('alpha', val);
- return this;
- },
-
- red: function (val) {
- return this.setChannel('rgb', 0, val);
- },
- green: function (val) {
- return this.setChannel('rgb', 1, val);
- },
- blue: function (val) {
- return this.setChannel('rgb', 2, val);
- },
- hue: function (val) {
- if (val) {
- val %= 360;
- val = val < 0 ? 360 + val : val;
- }
- return this.setChannel('hsl', 0, val);
- },
- saturation: function (val) {
- return this.setChannel('hsl', 1, val);
- },
- lightness: function (val) {
- return this.setChannel('hsl', 2, val);
- },
- saturationv: function (val) {
- return this.setChannel('hsv', 1, val);
- },
- whiteness: function (val) {
- return this.setChannel('hwb', 1, val);
- },
- blackness: function (val) {
- return this.setChannel('hwb', 2, val);
- },
- value: function (val) {
- return this.setChannel('hsv', 2, val);
- },
- cyan: function (val) {
- return this.setChannel('cmyk', 0, val);
- },
- magenta: function (val) {
- return this.setChannel('cmyk', 1, val);
- },
- yellow: function (val) {
- return this.setChannel('cmyk', 2, val);
- },
- black: function (val) {
- return this.setChannel('cmyk', 3, val);
- },
-
- hexString: function () {
- return string.hexString(this.values.rgb);
- },
- rgbString: function () {
- return string.rgbString(this.values.rgb, this.values.alpha);
- },
- rgbaString: function () {
- return string.rgbaString(this.values.rgb, this.values.alpha);
- },
- percentString: function () {
- return string.percentString(this.values.rgb, this.values.alpha);
- },
- hslString: function () {
- return string.hslString(this.values.hsl, this.values.alpha);
- },
- hslaString: function () {
- return string.hslaString(this.values.hsl, this.values.alpha);
- },
- hwbString: function () {
- return string.hwbString(this.values.hwb, this.values.alpha);
- },
- keyword: function () {
- return string.keyword(this.values.rgb, this.values.alpha);
- },
-
- rgbNumber: function () {
- var rgb = this.values.rgb;
- return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
- },
-
- luminosity: function () {
- // http://www.w3.org/TR/WCAG20/#relativeluminancedef
- var rgb = this.values.rgb;
- var lum = [];
- for (var i = 0; i < rgb.length; i++) {
- var chan = rgb[i] / 255;
- lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
- }
- return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
- },
-
- contrast: function (color2) {
- // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
- var lum1 = this.luminosity();
- var lum2 = color2.luminosity();
- if (lum1 > lum2) {
- return (lum1 + 0.05) / (lum2 + 0.05);
- }
- return (lum2 + 0.05) / (lum1 + 0.05);
- },
-
- level: function (color2) {
- var contrastRatio = this.contrast(color2);
- if (contrastRatio >= 7.1) {
- return 'AAA';
- }
-
- return (contrastRatio >= 4.5) ? 'AA' : '';
- },
-
- dark: function () {
- // YIQ equation from http://24ways.org/2010/calculating-color-contrast
- var rgb = this.values.rgb;
- var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
- return yiq < 128;
- },
-
- light: function () {
- return !this.dark();
- },
-
- negate: function () {
- var rgb = [];
- for (var i = 0; i < 3; i++) {
- rgb[i] = 255 - this.values.rgb[i];
- }
- this.setValues('rgb', rgb);
- return this;
- },
-
- lighten: function (ratio) {
- var hsl = this.values.hsl;
- hsl[2] += hsl[2] * ratio;
- this.setValues('hsl', hsl);
- return this;
- },
-
- darken: function (ratio) {
- var hsl = this.values.hsl;
- hsl[2] -= hsl[2] * ratio;
- this.setValues('hsl', hsl);
- return this;
- },
-
- saturate: function (ratio) {
- var hsl = this.values.hsl;
- hsl[1] += hsl[1] * ratio;
- this.setValues('hsl', hsl);
- return this;
- },
-
- desaturate: function (ratio) {
- var hsl = this.values.hsl;
- hsl[1] -= hsl[1] * ratio;
- this.setValues('hsl', hsl);
- return this;
- },
-
- whiten: function (ratio) {
- var hwb = this.values.hwb;
- hwb[1] += hwb[1] * ratio;
- this.setValues('hwb', hwb);
- return this;
- },
-
- blacken: function (ratio) {
- var hwb = this.values.hwb;
- hwb[2] += hwb[2] * ratio;
- this.setValues('hwb', hwb);
- return this;
- },
-
- greyscale: function () {
- var rgb = this.values.rgb;
- // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
- var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
- this.setValues('rgb', [val, val, val]);
- return this;
- },
-
- clearer: function (ratio) {
- var alpha = this.values.alpha;
- this.setValues('alpha', alpha - (alpha * ratio));
- return this;
- },
-
- opaquer: function (ratio) {
- var alpha = this.values.alpha;
- this.setValues('alpha', alpha + (alpha * ratio));
- return this;
- },
-
- rotate: function (degrees) {
- var hsl = this.values.hsl;
- var hue = (hsl[0] + degrees) % 360;
- hsl[0] = hue < 0 ? 360 + hue : hue;
- this.setValues('hsl', hsl);
- return this;
- },
-
- /**
- * Ported from sass implementation in C
- * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
- */
- mix: function (mixinColor, weight) {
- var color1 = this;
- var color2 = mixinColor;
- var p = weight === undefined ? 0.5 : weight;
-
- var w = 2 * p - 1;
- var a = color1.alpha() - color2.alpha();
-
- var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
- var w2 = 1 - w1;
-
- return this
- .rgb(
- w1 * color1.red() + w2 * color2.red(),
- w1 * color1.green() + w2 * color2.green(),
- w1 * color1.blue() + w2 * color2.blue()
- )
- .alpha(color1.alpha() * p + color2.alpha() * (1 - p));
- },
-
- toJSON: function () {
- return this.rgb();
- },
-
- clone: function () {
- // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
- // making the final build way to big to embed in Chart.js. So let's do it manually,
- // assuming that values to clone are 1 dimension arrays containing only numbers,
- // except 'alpha' which is a number.
- var result = new Color();
- var source = this.values;
- var target = result.values;
- var value, type;
-
- for (var prop in source) {
- if (source.hasOwnProperty(prop)) {
- value = source[prop];
- type = ({}).toString.call(value);
- if (type === '[object Array]') {
- target[prop] = value.slice(0);
- } else if (type === '[object Number]') {
- target[prop] = value;
- } else {
- console.error('unexpected color value:', value);
- }
- }
- }
-
- return result;
- }
-};
-
-Color.prototype.spaces = {
- rgb: ['red', 'green', 'blue'],
- hsl: ['hue', 'saturation', 'lightness'],
- hsv: ['hue', 'saturation', 'value'],
- hwb: ['hue', 'whiteness', 'blackness'],
- cmyk: ['cyan', 'magenta', 'yellow', 'black']
-};
-
-Color.prototype.maxes = {
- rgb: [255, 255, 255],
- hsl: [360, 100, 100],
- hsv: [360, 100, 100],
- hwb: [360, 100, 100],
- cmyk: [100, 100, 100, 100]
-};
-
-Color.prototype.getValues = function (space) {
- var values = this.values;
- var vals = {};
-
- for (var i = 0; i < space.length; i++) {
- vals[space.charAt(i)] = values[space][i];
- }
-
- if (values.alpha !== 1) {
- vals.a = values.alpha;
- }
-
- // {r: 255, g: 255, b: 255, a: 0.4}
- return vals;
-};
-
-Color.prototype.setValues = function (space, vals) {
- var values = this.values;
- var spaces = this.spaces;
- var maxes = this.maxes;
- var alpha = 1;
- var i;
-
- if (space === 'alpha') {
- alpha = vals;
- } else if (vals.length) {
- // [10, 10, 10]
- values[space] = vals.slice(0, space.length);
- alpha = vals[space.length];
- } else if (vals[space.charAt(0)] !== undefined) {
- // {r: 10, g: 10, b: 10}
- for (i = 0; i < space.length; i++) {
- values[space][i] = vals[space.charAt(i)];
- }
-
- alpha = vals.a;
- } else if (vals[spaces[space][0]] !== undefined) {
- // {red: 10, green: 10, blue: 10}
- var chans = spaces[space];
-
- for (i = 0; i < space.length; i++) {
- values[space][i] = vals[chans[i]];
- }
-
- alpha = vals.alpha;
- }
-
- values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
-
- if (space === 'alpha') {
- return false;
- }
-
- var capped;
-
- // cap values of the space prior converting all values
- for (i = 0; i < space.length; i++) {
- capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
- values[space][i] = Math.round(capped);
- }
-
- // convert to all the other color spaces
- for (var sname in spaces) {
- if (sname !== space) {
- values[sname] = convert[space][sname](values[space]);
- }
- }
-
- return true;
-};
-
-Color.prototype.setSpace = function (space, args) {
- var vals = args[0];
-
- if (vals === undefined) {
- // color.rgb()
- return this.getValues(space);
- }
-
- // color.rgb(10, 10, 10)
- if (typeof vals === 'number') {
- vals = Array.prototype.slice.call(args);
- }
-
- this.setValues(space, vals);
- return this;
-};
-
-Color.prototype.setChannel = function (space, index, val) {
- var svalues = this.values[space];
- if (val === undefined) {
- // color.red()
- return svalues[index];
- } else if (val === svalues[index]) {
- // color.red(color.red())
- return this;
- }
-
- // color.red(100)
- svalues[index] = val;
- this.setValues(space, svalues);
-
- return this;
-};
-
-if (typeof window !== 'undefined') {
- window.Color = Color;
-}
-
-module.exports = Color;
+ /* MIT license */
+ var convert = require(5);
+ var string = require(2);
+
+ var Color = function (obj) {
+ if (obj instanceof Color) {
+ return obj;
+ }
+ if (!(this instanceof Color)) {
+ return new Color(obj);
+ }
+
+ this.valid = false;
+ this.values = {
+ rgb: [0, 0, 0],
+ hsl: [0, 0, 0],
+ hsv: [0, 0, 0],
+ hwb: [0, 0, 0],
+ cmyk: [0, 0, 0, 0],
+ alpha: 1
+ };
+
+ // parse Color() argument
+ var vals;
+ if (typeof obj === 'string') {
+ vals = string.getRgba(obj);
+ if (vals) {
+ this.setValues('rgb', vals);
+ } else if (vals = string.getHsla(obj)) {
+ this.setValues('hsl', vals);
+ } else if (vals = string.getHwb(obj)) {
+ this.setValues('hwb', vals);
+ }
+ } else if (typeof obj === 'object') {
+ vals = obj;
+ if (vals.r !== undefined || vals.red !== undefined) {
+ this.setValues('rgb', vals);
+ } else if (vals.l !== undefined || vals.lightness !== undefined) {
+ this.setValues('hsl', vals);
+ } else if (vals.v !== undefined || vals.value !== undefined) {
+ this.setValues('hsv', vals);
+ } else if (vals.w !== undefined || vals.whiteness !== undefined) {
+ this.setValues('hwb', vals);
+ } else if (vals.c !== undefined || vals.cyan !== undefined) {
+ this.setValues('cmyk', vals);
+ }
+ }
+ };
+
+ Color.prototype = {
+ isValid: function () {
+ return this.valid;
+ },
+ rgb: function () {
+ return this.setSpace('rgb', arguments);
+ },
+ hsl: function () {
+ return this.setSpace('hsl', arguments);
+ },
+ hsv: function () {
+ return this.setSpace('hsv', arguments);
+ },
+ hwb: function () {
+ return this.setSpace('hwb', arguments);
+ },
+ cmyk: function () {
+ return this.setSpace('cmyk', arguments);
+ },
+
+ rgbArray: function () {
+ return this.values.rgb;
+ },
+ hslArray: function () {
+ return this.values.hsl;
+ },
+ hsvArray: function () {
+ return this.values.hsv;
+ },
+ hwbArray: function () {
+ var values = this.values;
+ if (values.alpha !== 1) {
+ return values.hwb.concat([values.alpha]);
+ }
+ return values.hwb;
+ },
+ cmykArray: function () {
+ return this.values.cmyk;
+ },
+ rgbaArray: function () {
+ var values = this.values;
+ return values.rgb.concat([values.alpha]);
+ },
+ hslaArray: function () {
+ var values = this.values;
+ return values.hsl.concat([values.alpha]);
+ },
+ alpha: function (val) {
+ if (val === undefined) {
+ return this.values.alpha;
+ }
+ this.setValues('alpha', val);
+ return this;
+ },
+
+ red: function (val) {
+ return this.setChannel('rgb', 0, val);
+ },
+ green: function (val) {
+ return this.setChannel('rgb', 1, val);
+ },
+ blue: function (val) {
+ return this.setChannel('rgb', 2, val);
+ },
+ hue: function (val) {
+ if (val) {
+ val %= 360;
+ val = val < 0 ? 360 + val : val;
+ }
+ return this.setChannel('hsl', 0, val);
+ },
+ saturation: function (val) {
+ return this.setChannel('hsl', 1, val);
+ },
+ lightness: function (val) {
+ return this.setChannel('hsl', 2, val);
+ },
+ saturationv: function (val) {
+ return this.setChannel('hsv', 1, val);
+ },
+ whiteness: function (val) {
+ return this.setChannel('hwb', 1, val);
+ },
+ blackness: function (val) {
+ return this.setChannel('hwb', 2, val);
+ },
+ value: function (val) {
+ return this.setChannel('hsv', 2, val);
+ },
+ cyan: function (val) {
+ return this.setChannel('cmyk', 0, val);
+ },
+ magenta: function (val) {
+ return this.setChannel('cmyk', 1, val);
+ },
+ yellow: function (val) {
+ return this.setChannel('cmyk', 2, val);
+ },
+ black: function (val) {
+ return this.setChannel('cmyk', 3, val);
+ },
+
+ hexString: function () {
+ return string.hexString(this.values.rgb);
+ },
+ rgbString: function () {
+ return string.rgbString(this.values.rgb, this.values.alpha);
+ },
+ rgbaString: function () {
+ return string.rgbaString(this.values.rgb, this.values.alpha);
+ },
+ percentString: function () {
+ return string.percentString(this.values.rgb, this.values.alpha);
+ },
+ hslString: function () {
+ return string.hslString(this.values.hsl, this.values.alpha);
+ },
+ hslaString: function () {
+ return string.hslaString(this.values.hsl, this.values.alpha);
+ },
+ hwbString: function () {
+ return string.hwbString(this.values.hwb, this.values.alpha);
+ },
+ keyword: function () {
+ return string.keyword(this.values.rgb, this.values.alpha);
+ },
+
+ rgbNumber: function () {
+ var rgb = this.values.rgb;
+ return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
+ },
+
+ luminosity: function () {
+ // http://www.w3.org/TR/WCAG20/#relativeluminancedef
+ var rgb = this.values.rgb;
+ var lum = [];
+ for (var i = 0; i < rgb.length; i++) {
+ var chan = rgb[i] / 255;
+ lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
+ }
+ return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
+ },
+
+ contrast: function (color2) {
+ // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
+ var lum1 = this.luminosity();
+ var lum2 = color2.luminosity();
+ if (lum1 > lum2) {
+ return (lum1 + 0.05) / (lum2 + 0.05);
+ }
+ return (lum2 + 0.05) / (lum1 + 0.05);
+ },
+
+ level: function (color2) {
+ var contrastRatio = this.contrast(color2);
+ if (contrastRatio >= 7.1) {
+ return 'AAA';
+ }
+
+ return (contrastRatio >= 4.5) ? 'AA' : '';
+ },
+
+ dark: function () {
+ // YIQ equation from http://24ways.org/2010/calculating-color-contrast
+ var rgb = this.values.rgb;
+ var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
+ return yiq < 128;
+ },
+
+ light: function () {
+ return !this.dark();
+ },
+
+ negate: function () {
+ var rgb = [];
+ for (var i = 0; i < 3; i++) {
+ rgb[i] = 255 - this.values.rgb[i];
+ }
+ this.setValues('rgb', rgb);
+ return this;
+ },
+
+ lighten: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] += hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ darken: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] -= hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ saturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] += hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ desaturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] -= hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ whiten: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[1] += hwb[1] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ blacken: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[2] += hwb[2] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ greyscale: function () {
+ var rgb = this.values.rgb;
+ // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
+ var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
+ this.setValues('rgb', [val, val, val]);
+ return this;
+ },
+
+ clearer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha - (alpha * ratio));
+ return this;
+ },
+
+ opaquer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha + (alpha * ratio));
+ return this;
+ },
+
+ rotate: function (degrees) {
+ var hsl = this.values.hsl;
+ var hue = (hsl[0] + degrees) % 360;
+ hsl[0] = hue < 0 ? 360 + hue : hue;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ /**
+ * Ported from sass implementation in C
+ * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
+ */
+ mix: function (mixinColor, weight) {
+ var color1 = this;
+ var color2 = mixinColor;
+ var p = weight === undefined ? 0.5 : weight;
+
+ var w = 2 * p - 1;
+ var a = color1.alpha() - color2.alpha();
+
+ var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
+ var w2 = 1 - w1;
+
+ return this
+ .rgb(
+ w1 * color1.red() + w2 * color2.red(),
+ w1 * color1.green() + w2 * color2.green(),
+ w1 * color1.blue() + w2 * color2.blue()
+ )
+ .alpha(color1.alpha() * p + color2.alpha() * (1 - p));
+ },
+
+ toJSON: function () {
+ return this.rgb();
+ },
+
+ clone: function () {
+ // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
+ // making the final build way to big to embed in Chart.js. So let's do it manually,
+ // assuming that values to clone are 1 dimension arrays containing only numbers,
+ // except 'alpha' which is a number.
+ var result = new Color();
+ var source = this.values;
+ var target = result.values;
+ var value, type;
+
+ for (var prop in source) {
+ if (source.hasOwnProperty(prop)) {
+ value = source[prop];
+ type = ({}).toString.call(value);
+ if (type === '[object Array]') {
+ target[prop] = value.slice(0);
+ } else if (type === '[object Number]') {
+ target[prop] = value;
+ } else {
+ console.error('unexpected color value:', value);
+ }
+ }
+ }
+
+ return result;
+ }
+ };
+
+ Color.prototype.spaces = {
+ rgb: ['red', 'green', 'blue'],
+ hsl: ['hue', 'saturation', 'lightness'],
+ hsv: ['hue', 'saturation', 'value'],
+ hwb: ['hue', 'whiteness', 'blackness'],
+ cmyk: ['cyan', 'magenta', 'yellow', 'black']
+ };
+
+ Color.prototype.maxes = {
+ rgb: [255, 255, 255],
+ hsl: [360, 100, 100],
+ hsv: [360, 100, 100],
+ hwb: [360, 100, 100],
+ cmyk: [100, 100, 100, 100]
+ };
+
+ Color.prototype.getValues = function (space) {
+ var values = this.values;
+ var vals = {};
+
+ for (var i = 0; i < space.length; i++) {
+ vals[space.charAt(i)] = values[space][i];
+ }
+
+ if (values.alpha !== 1) {
+ vals.a = values.alpha;
+ }
+
+ // {r: 255, g: 255, b: 255, a: 0.4}
+ return vals;
+ };
+
+ Color.prototype.setValues = function (space, vals) {
+ var values = this.values;
+ var spaces = this.spaces;
+ var maxes = this.maxes;
+ var alpha = 1;
+ var i;
+
+ this.valid = true;
+
+ if (space === 'alpha') {
+ alpha = vals;
+ } else if (vals.length) {
+ // [10, 10, 10]
+ values[space] = vals.slice(0, space.length);
+ alpha = vals[space.length];
+ } else if (vals[space.charAt(0)] !== undefined) {
+ // {r: 10, g: 10, b: 10}
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[space.charAt(i)];
+ }
+
+ alpha = vals.a;
+ } else if (vals[spaces[space][0]] !== undefined) {
+ // {red: 10, green: 10, blue: 10}
+ var chans = spaces[space];
+
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[chans[i]];
+ }
+
+ alpha = vals.alpha;
+ }
+
+ values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
+
+ if (space === 'alpha') {
+ return false;
+ }
+
+ var capped;
+
+ // cap values of the space prior converting all values
+ for (i = 0; i < space.length; i++) {
+ capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
+ values[space][i] = Math.round(capped);
+ }
+
+ // convert to all the other color spaces
+ for (var sname in spaces) {
+ if (sname !== space) {
+ values[sname] = convert[space][sname](values[space]);
+ }
+ }
+
+ return true;
+ };
+
+ Color.prototype.setSpace = function (space, args) {
+ var vals = args[0];
+
+ if (vals === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+
+ // color.rgb(10, 10, 10)
+ if (typeof vals === 'number') {
+ vals = Array.prototype.slice.call(args);
+ }
+
+ this.setValues(space, vals);
+ return this;
+ };
+
+ Color.prototype.setChannel = function (space, index, val) {
+ var svalues = this.values[space];
+ if (val === undefined) {
+ // color.red()
+ return svalues[index];
+ } else if (val === svalues[index]) {
+ // color.red(color.red())
+ return this;
+ }
+
+ // color.red(100)
+ svalues[index] = val;
+ this.setValues(space, svalues);
+
+ return this;
+ };
+
+ if (typeof window !== 'undefined') {
+ window.Color = Color;
+ }
+
+ module.exports = Color;
},{"2":2,"5":5}],4:[function(require,module,exports){
-/* MIT license */
+ /* MIT license */
-module.exports = {
- rgb2hsl: rgb2hsl,
- rgb2hsv: rgb2hsv,
- rgb2hwb: rgb2hwb,
- rgb2cmyk: rgb2cmyk,
- rgb2keyword: rgb2keyword,
- rgb2xyz: rgb2xyz,
- rgb2lab: rgb2lab,
- rgb2lch: rgb2lch,
+ module.exports = {
+ rgb2hsl: rgb2hsl,
+ rgb2hsv: rgb2hsv,
+ rgb2hwb: rgb2hwb,
+ rgb2cmyk: rgb2cmyk,
+ rgb2keyword: rgb2keyword,
+ rgb2xyz: rgb2xyz,
+ rgb2lab: rgb2lab,
+ rgb2lch: rgb2lch,
- hsl2rgb: hsl2rgb,
- hsl2hsv: hsl2hsv,
- hsl2hwb: hsl2hwb,
- hsl2cmyk: hsl2cmyk,
- hsl2keyword: hsl2keyword,
+ hsl2rgb: hsl2rgb,
+ hsl2hsv: hsl2hsv,
+ hsl2hwb: hsl2hwb,
+ hsl2cmyk: hsl2cmyk,
+ hsl2keyword: hsl2keyword,
- hsv2rgb: hsv2rgb,
- hsv2hsl: hsv2hsl,
- hsv2hwb: hsv2hwb,
- hsv2cmyk: hsv2cmyk,
- hsv2keyword: hsv2keyword,
+ hsv2rgb: hsv2rgb,
+ hsv2hsl: hsv2hsl,
+ hsv2hwb: hsv2hwb,
+ hsv2cmyk: hsv2cmyk,
+ hsv2keyword: hsv2keyword,
- hwb2rgb: hwb2rgb,
- hwb2hsl: hwb2hsl,
- hwb2hsv: hwb2hsv,
- hwb2cmyk: hwb2cmyk,
- hwb2keyword: hwb2keyword,
+ hwb2rgb: hwb2rgb,
+ hwb2hsl: hwb2hsl,
+ hwb2hsv: hwb2hsv,
+ hwb2cmyk: hwb2cmyk,
+ hwb2keyword: hwb2keyword,
- cmyk2rgb: cmyk2rgb,
- cmyk2hsl: cmyk2hsl,
- cmyk2hsv: cmyk2hsv,
- cmyk2hwb: cmyk2hwb,
- cmyk2keyword: cmyk2keyword,
+ cmyk2rgb: cmyk2rgb,
+ cmyk2hsl: cmyk2hsl,
+ cmyk2hsv: cmyk2hsv,
+ cmyk2hwb: cmyk2hwb,
+ cmyk2keyword: cmyk2keyword,
- keyword2rgb: keyword2rgb,
- keyword2hsl: keyword2hsl,
- keyword2hsv: keyword2hsv,
- keyword2hwb: keyword2hwb,
- keyword2cmyk: keyword2cmyk,
- keyword2lab: keyword2lab,
- keyword2xyz: keyword2xyz,
+ keyword2rgb: keyword2rgb,
+ keyword2hsl: keyword2hsl,
+ keyword2hsv: keyword2hsv,
+ keyword2hwb: keyword2hwb,
+ keyword2cmyk: keyword2cmyk,
+ keyword2lab: keyword2lab,
+ keyword2xyz: keyword2xyz,
- xyz2rgb: xyz2rgb,
- xyz2lab: xyz2lab,
- xyz2lch: xyz2lch,
+ xyz2rgb: xyz2rgb,
+ xyz2lab: xyz2lab,
+ xyz2lch: xyz2lch,
- lab2xyz: lab2xyz,
- lab2rgb: lab2rgb,
- lab2lch: lab2lch,
+ lab2xyz: lab2xyz,
+ lab2rgb: lab2rgb,
+ lab2lch: lab2lch,
- lch2lab: lch2lab,
- lch2xyz: lch2xyz,
- lch2rgb: lch2rgb
-}
+ lch2lab: lch2lab,
+ lch2xyz: lch2xyz,
+ lch2rgb: lch2rgb
+ }
-function rgb2hsl(rgb) {
- var r = rgb[0]/255,
- g = rgb[1]/255,
- b = rgb[2]/255,
- min = Math.min(r, g, b),
- max = Math.max(r, g, b),
- delta = max - min,
- h, s, l;
+ function rgb2hsl(rgb) {
+ var r = rgb[0]/255,
+ g = rgb[1]/255,
+ b = rgb[2]/255,
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, l;
- if (max == min)
- h = 0;
- else if (r == max)
- h = (g - b) / delta;
- else if (g == max)
- h = 2 + (b - r) / delta;
- else if (b == max)
- h = 4 + (r - g)/ delta;
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g)/ delta;
- h = Math.min(h * 60, 360);
+ h = Math.min(h * 60, 360);
- if (h < 0)
- h += 360;
+ if (h < 0)
+ h += 360;
- l = (min + max) / 2;
+ l = (min + max) / 2;
- if (max == min)
- s = 0;
- else if (l <= 0.5)
- s = delta / (max + min);
- else
- s = delta / (2 - max - min);
+ if (max == min)
+ s = 0;
+ else if (l <= 0.5)
+ s = delta / (max + min);
+ else
+ s = delta / (2 - max - min);
- return [h, s * 100, l * 100];
-}
+ return [h, s * 100, l * 100];
+ }
-function rgb2hsv(rgb) {
- var r = rgb[0],
- g = rgb[1],
- b = rgb[2],
- min = Math.min(r, g, b),
- max = Math.max(r, g, b),
- delta = max - min,
- h, s, v;
+ function rgb2hsv(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, v;
- if (max == 0)
- s = 0;
- else
- s = (delta/max * 1000)/10;
+ if (max == 0)
+ s = 0;
+ else
+ s = (delta/max * 1000)/10;
- if (max == min)
- h = 0;
- else if (r == max)
- h = (g - b) / delta;
- else if (g == max)
- h = 2 + (b - r) / delta;
- else if (b == max)
- h = 4 + (r - g) / delta;
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g) / delta;
- h = Math.min(h * 60, 360);
+ h = Math.min(h * 60, 360);
- if (h < 0)
- h += 360;
+ if (h < 0)
+ h += 360;
- v = ((max / 255) * 1000) / 10;
+ v = ((max / 255) * 1000) / 10;
- return [h, s, v];
-}
+ return [h, s, v];
+ }
-function rgb2hwb(rgb) {
- var r = rgb[0],
- g = rgb[1],
- b = rgb[2],
- h = rgb2hsl(rgb)[0],
- w = 1/255 * Math.min(r, Math.min(g, b)),
- b = 1 - 1/255 * Math.max(r, Math.max(g, b));
+ function rgb2hwb(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ h = rgb2hsl(rgb)[0],
+ w = 1/255 * Math.min(r, Math.min(g, b)),
+ b = 1 - 1/255 * Math.max(r, Math.max(g, b));
- return [h, w * 100, b * 100];
-}
+ return [h, w * 100, b * 100];
+ }
-function rgb2cmyk(rgb) {
- var r = rgb[0] / 255,
- g = rgb[1] / 255,
- b = rgb[2] / 255,
- c, m, y, k;
+ function rgb2cmyk(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255,
+ c, m, y, k;
- k = Math.min(1 - r, 1 - g, 1 - b);
- c = (1 - r - k) / (1 - k) || 0;
- m = (1 - g - k) / (1 - k) || 0;
- y = (1 - b - k) / (1 - k) || 0;
- return [c * 100, m * 100, y * 100, k * 100];
-}
+ k = Math.min(1 - r, 1 - g, 1 - b);
+ c = (1 - r - k) / (1 - k) || 0;
+ m = (1 - g - k) / (1 - k) || 0;
+ y = (1 - b - k) / (1 - k) || 0;
+ return [c * 100, m * 100, y * 100, k * 100];
+ }
-function rgb2keyword(rgb) {
- return reverseKeywords[JSON.stringify(rgb)];
-}
+ function rgb2keyword(rgb) {
+ return reverseKeywords[JSON.stringify(rgb)];
+ }
-function rgb2xyz(rgb) {
- var r = rgb[0] / 255,
- g = rgb[1] / 255,
- b = rgb[2] / 255;
+ function rgb2xyz(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255;
- // assume sRGB
- r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
- g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
- b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
+ // assume sRGB
+ r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
+ g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
+ b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
- var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
- var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
- var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
+ var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
+ var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
+ var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
- return [x * 100, y *100, z * 100];
-}
+ return [x * 100, y *100, z * 100];
+ }
-function rgb2lab(rgb) {
- var xyz = rgb2xyz(rgb),
- x = xyz[0],
- y = xyz[1],
- z = xyz[2],
- l, a, b;
+ function rgb2lab(rgb) {
+ var xyz = rgb2xyz(rgb),
+ x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
- x /= 95.047;
- y /= 100;
- z /= 108.883;
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
- x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
- y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
- z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
- l = (116 * y) - 16;
- a = 500 * (x - y);
- b = 200 * (y - z);
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
- return [l, a, b];
-}
+ return [l, a, b];
+ }
-function rgb2lch(args) {
- return lab2lch(rgb2lab(args));
-}
+ function rgb2lch(args) {
+ return lab2lch(rgb2lab(args));
+ }
-function hsl2rgb(hsl) {
- var h = hsl[0] / 360,
- s = hsl[1] / 100,
- l = hsl[2] / 100,
- t1, t2, t3, rgb, val;
+ function hsl2rgb(hsl) {
+ var h = hsl[0] / 360,
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ t1, t2, t3, rgb, val;
- if (s == 0) {
- val = l * 255;
- return [val, val, val];
- }
+ if (s == 0) {
+ val = l * 255;
+ return [val, val, val];
+ }
- if (l < 0.5)
- t2 = l * (1 + s);
- else
- t2 = l + s - l * s;
- t1 = 2 * l - t2;
+ if (l < 0.5)
+ t2 = l * (1 + s);
+ else
+ t2 = l + s - l * s;
+ t1 = 2 * l - t2;
- rgb = [0, 0, 0];
- for (var i = 0; i < 3; i++) {
- t3 = h + 1 / 3 * - (i - 1);
- t3 < 0 && t3++;
- t3 > 1 && t3--;
+ rgb = [0, 0, 0];
+ for (var i = 0; i < 3; i++) {
+ t3 = h + 1 / 3 * - (i - 1);
+ t3 < 0 && t3++;
+ t3 > 1 && t3--;
- if (6 * t3 < 1)
- val = t1 + (t2 - t1) * 6 * t3;
- else if (2 * t3 < 1)
- val = t2;
- else if (3 * t3 < 2)
- val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
- else
- val = t1;
+ if (6 * t3 < 1)
+ val = t1 + (t2 - t1) * 6 * t3;
+ else if (2 * t3 < 1)
+ val = t2;
+ else if (3 * t3 < 2)
+ val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
+ else
+ val = t1;
- rgb[i] = val * 255;
- }
+ rgb[i] = val * 255;
+ }
- return rgb;
-}
+ return rgb;
+ }
-function hsl2hsv(hsl) {
- var h = hsl[0],
- s = hsl[1] / 100,
- l = hsl[2] / 100,
- sv, v;
+ function hsl2hsv(hsl) {
+ var h = hsl[0],
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ sv, v;
- if(l === 0) {
- // no need to do calc on black
- // also avoids divide by 0 error
- return [0, 0, 0];
- }
+ if(l === 0) {
+ // no need to do calc on black
+ // also avoids divide by 0 error
+ return [0, 0, 0];
+ }
- l *= 2;
- s *= (l <= 1) ? l : 2 - l;
- v = (l + s) / 2;
- sv = (2 * s) / (l + s);
- return [h, sv * 100, v * 100];
-}
+ l *= 2;
+ s *= (l <= 1) ? l : 2 - l;
+ v = (l + s) / 2;
+ sv = (2 * s) / (l + s);
+ return [h, sv * 100, v * 100];
+ }
-function hsl2hwb(args) {
- return rgb2hwb(hsl2rgb(args));
-}
+ function hsl2hwb(args) {
+ return rgb2hwb(hsl2rgb(args));
+ }
-function hsl2cmyk(args) {
- return rgb2cmyk(hsl2rgb(args));
-}
+ function hsl2cmyk(args) {
+ return rgb2cmyk(hsl2rgb(args));
+ }
-function hsl2keyword(args) {
- return rgb2keyword(hsl2rgb(args));
-}
+ function hsl2keyword(args) {
+ return rgb2keyword(hsl2rgb(args));
+ }
-function hsv2rgb(hsv) {
- var h = hsv[0] / 60,
- s = hsv[1] / 100,
- v = hsv[2] / 100,
- hi = Math.floor(h) % 6;
+ function hsv2rgb(hsv) {
+ var h = hsv[0] / 60,
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ hi = Math.floor(h) % 6;
- var f = h - Math.floor(h),
- p = 255 * v * (1 - s),
- q = 255 * v * (1 - (s * f)),
- t = 255 * v * (1 - (s * (1 - f))),
- v = 255 * v;
+ var f = h - Math.floor(h),
+ p = 255 * v * (1 - s),
+ q = 255 * v * (1 - (s * f)),
+ t = 255 * v * (1 - (s * (1 - f))),
+ v = 255 * v;
- switch(hi) {
- case 0:
- return [v, t, p];
- case 1:
- return [q, v, p];
- case 2:
- return [p, v, t];
- case 3:
- return [p, q, v];
- case 4:
- return [t, p, v];
- case 5:
- return [v, p, q];
- }
-}
+ switch(hi) {
+ case 0:
+ return [v, t, p];
+ case 1:
+ return [q, v, p];
+ case 2:
+ return [p, v, t];
+ case 3:
+ return [p, q, v];
+ case 4:
+ return [t, p, v];
+ case 5:
+ return [v, p, q];
+ }
+ }
-function hsv2hsl(hsv) {
- var h = hsv[0],
- s = hsv[1] / 100,
- v = hsv[2] / 100,
- sl, l;
+ function hsv2hsl(hsv) {
+ var h = hsv[0],
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ sl, l;
- l = (2 - s) * v;
- sl = s * v;
- sl /= (l <= 1) ? l : 2 - l;
- sl = sl || 0;
- l /= 2;
- return [h, sl * 100, l * 100];
-}
+ l = (2 - s) * v;
+ sl = s * v;
+ sl /= (l <= 1) ? l : 2 - l;
+ sl = sl || 0;
+ l /= 2;
+ return [h, sl * 100, l * 100];
+ }
-function hsv2hwb(args) {
- return rgb2hwb(hsv2rgb(args))
-}
+ function hsv2hwb(args) {
+ return rgb2hwb(hsv2rgb(args))
+ }
-function hsv2cmyk(args) {
- return rgb2cmyk(hsv2rgb(args));
-}
+ function hsv2cmyk(args) {
+ return rgb2cmyk(hsv2rgb(args));
+ }
-function hsv2keyword(args) {
- return rgb2keyword(hsv2rgb(args));
-}
+ function hsv2keyword(args) {
+ return rgb2keyword(hsv2rgb(args));
+ }
// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
-function hwb2rgb(hwb) {
- var h = hwb[0] / 360,
- wh = hwb[1] / 100,
- bl = hwb[2] / 100,
- ratio = wh + bl,
- i, v, f, n;
+ function hwb2rgb(hwb) {
+ var h = hwb[0] / 360,
+ wh = hwb[1] / 100,
+ bl = hwb[2] / 100,
+ ratio = wh + bl,
+ i, v, f, n;
- // wh + bl cant be > 1
- if (ratio > 1) {
- wh /= ratio;
- bl /= ratio;
- }
+ // wh + bl cant be > 1
+ if (ratio > 1) {
+ wh /= ratio;
+ bl /= ratio;
+ }
- i = Math.floor(6 * h);
- v = 1 - bl;
- f = 6 * h - i;
- if ((i & 0x01) != 0) {
- f = 1 - f;
- }
- n = wh + f * (v - wh); // linear interpolation
+ i = Math.floor(6 * h);
+ v = 1 - bl;
+ f = 6 * h - i;
+ if ((i & 0x01) != 0) {
+ f = 1 - f;
+ }
+ n = wh + f * (v - wh); // linear interpolation
- switch (i) {
- default:
- case 6:
- case 0: r = v; g = n; b = wh; break;
- case 1: r = n; g = v; b = wh; break;
- case 2: r = wh; g = v; b = n; break;
- case 3: r = wh; g = n; b = v; break;
- case 4: r = n; g = wh; b = v; break;
- case 5: r = v; g = wh; b = n; break;
- }
+ switch (i) {
+ default:
+ case 6:
+ case 0: r = v; g = n; b = wh; break;
+ case 1: r = n; g = v; b = wh; break;
+ case 2: r = wh; g = v; b = n; break;
+ case 3: r = wh; g = n; b = v; break;
+ case 4: r = n; g = wh; b = v; break;
+ case 5: r = v; g = wh; b = n; break;
+ }
- return [r * 255, g * 255, b * 255];
-}
+ return [r * 255, g * 255, b * 255];
+ }
-function hwb2hsl(args) {
- return rgb2hsl(hwb2rgb(args));
-}
+ function hwb2hsl(args) {
+ return rgb2hsl(hwb2rgb(args));
+ }
-function hwb2hsv(args) {
- return rgb2hsv(hwb2rgb(args));
-}
+ function hwb2hsv(args) {
+ return rgb2hsv(hwb2rgb(args));
+ }
-function hwb2cmyk(args) {
- return rgb2cmyk(hwb2rgb(args));
-}
+ function hwb2cmyk(args) {
+ return rgb2cmyk(hwb2rgb(args));
+ }
-function hwb2keyword(args) {
- return rgb2keyword(hwb2rgb(args));
-}
+ function hwb2keyword(args) {
+ return rgb2keyword(hwb2rgb(args));
+ }
-function cmyk2rgb(cmyk) {
- var c = cmyk[0] / 100,
- m = cmyk[1] / 100,
- y = cmyk[2] / 100,
- k = cmyk[3] / 100,
- r, g, b;
+ function cmyk2rgb(cmyk) {
+ var c = cmyk[0] / 100,
+ m = cmyk[1] / 100,
+ y = cmyk[2] / 100,
+ k = cmyk[3] / 100,
+ r, g, b;
- r = 1 - Math.min(1, c * (1 - k) + k);
- g = 1 - Math.min(1, m * (1 - k) + k);
- b = 1 - Math.min(1, y * (1 - k) + k);
- return [r * 255, g * 255, b * 255];
-}
+ r = 1 - Math.min(1, c * (1 - k) + k);
+ g = 1 - Math.min(1, m * (1 - k) + k);
+ b = 1 - Math.min(1, y * (1 - k) + k);
+ return [r * 255, g * 255, b * 255];
+ }
-function cmyk2hsl(args) {
- return rgb2hsl(cmyk2rgb(args));
-}
+ function cmyk2hsl(args) {
+ return rgb2hsl(cmyk2rgb(args));
+ }
-function cmyk2hsv(args) {
- return rgb2hsv(cmyk2rgb(args));
-}
+ function cmyk2hsv(args) {
+ return rgb2hsv(cmyk2rgb(args));
+ }
-function cmyk2hwb(args) {
- return rgb2hwb(cmyk2rgb(args));
-}
+ function cmyk2hwb(args) {
+ return rgb2hwb(cmyk2rgb(args));
+ }
-function cmyk2keyword(args) {
- return rgb2keyword(cmyk2rgb(args));
-}
+ function cmyk2keyword(args) {
+ return rgb2keyword(cmyk2rgb(args));
+ }
-function xyz2rgb(xyz) {
- var x = xyz[0] / 100,
- y = xyz[1] / 100,
- z = xyz[2] / 100,
- r, g, b;
+ function xyz2rgb(xyz) {
+ var x = xyz[0] / 100,
+ y = xyz[1] / 100,
+ z = xyz[2] / 100,
+ r, g, b;
- r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
- g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
- b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
+ r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
+ g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
+ b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
- // assume sRGB
- r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
- : r = (r * 12.92);
+ // assume sRGB
+ r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
+ : r = (r * 12.92);
- g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
- : g = (g * 12.92);
+ g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
+ : g = (g * 12.92);
- b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
- : b = (b * 12.92);
+ b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
+ : b = (b * 12.92);
- r = Math.min(Math.max(0, r), 1);
- g = Math.min(Math.max(0, g), 1);
- b = Math.min(Math.max(0, b), 1);
+ r = Math.min(Math.max(0, r), 1);
+ g = Math.min(Math.max(0, g), 1);
+ b = Math.min(Math.max(0, b), 1);
- return [r * 255, g * 255, b * 255];
-}
+ return [r * 255, g * 255, b * 255];
+ }
-function xyz2lab(xyz) {
- var x = xyz[0],
- y = xyz[1],
- z = xyz[2],
- l, a, b;
+ function xyz2lab(xyz) {
+ var x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
- x /= 95.047;
- y /= 100;
- z /= 108.883;
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
- x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
- y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
- z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
- l = (116 * y) - 16;
- a = 500 * (x - y);
- b = 200 * (y - z);
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
- return [l, a, b];
-}
+ return [l, a, b];
+ }
-function xyz2lch(args) {
- return lab2lch(xyz2lab(args));
-}
+ function xyz2lch(args) {
+ return lab2lch(xyz2lab(args));
+ }
-function lab2xyz(lab) {
- var l = lab[0],
- a = lab[1],
- b = lab[2],
- x, y, z, y2;
+ function lab2xyz(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ x, y, z, y2;
- if (l <= 8) {
- y = (l * 100) / 903.3;
- y2 = (7.787 * (y / 100)) + (16 / 116);
- } else {
- y = 100 * Math.pow((l + 16) / 116, 3);
- y2 = Math.pow(y / 100, 1/3);
- }
+ if (l <= 8) {
+ y = (l * 100) / 903.3;
+ y2 = (7.787 * (y / 100)) + (16 / 116);
+ } else {
+ y = 100 * Math.pow((l + 16) / 116, 3);
+ y2 = Math.pow(y / 100, 1/3);
+ }
- x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
+ x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
- z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
+ z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
- return [x, y, z];
-}
+ return [x, y, z];
+ }
-function lab2lch(lab) {
- var l = lab[0],
- a = lab[1],
- b = lab[2],
- hr, h, c;
+ function lab2lch(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ hr, h, c;
- hr = Math.atan2(b, a);
- h = hr * 360 / 2 / Math.PI;
- if (h < 0) {
- h += 360;
- }
- c = Math.sqrt(a * a + b * b);
- return [l, c, h];
-}
+ hr = Math.atan2(b, a);
+ h = hr * 360 / 2 / Math.PI;
+ if (h < 0) {
+ h += 360;
+ }
+ c = Math.sqrt(a * a + b * b);
+ return [l, c, h];
+ }
-function lab2rgb(args) {
- return xyz2rgb(lab2xyz(args));
-}
+ function lab2rgb(args) {
+ return xyz2rgb(lab2xyz(args));
+ }
-function lch2lab(lch) {
- var l = lch[0],
- c = lch[1],
- h = lch[2],
- a, b, hr;
+ function lch2lab(lch) {
+ var l = lch[0],
+ c = lch[1],
+ h = lch[2],
+ a, b, hr;
- hr = h / 360 * 2 * Math.PI;
- a = c * Math.cos(hr);
- b = c * Math.sin(hr);
- return [l, a, b];
-}
+ hr = h / 360 * 2 * Math.PI;
+ a = c * Math.cos(hr);
+ b = c * Math.sin(hr);
+ return [l, a, b];
+ }
-function lch2xyz(args) {
- return lab2xyz(lch2lab(args));
-}
+ function lch2xyz(args) {
+ return lab2xyz(lch2lab(args));
+ }
-function lch2rgb(args) {
- return lab2rgb(lch2lab(args));
-}
+ function lch2rgb(args) {
+ return lab2rgb(lch2lab(args));
+ }
-function keyword2rgb(keyword) {
- return cssKeywords[keyword];
-}
+ function keyword2rgb(keyword) {
+ return cssKeywords[keyword];
+ }
-function keyword2hsl(args) {
- return rgb2hsl(keyword2rgb(args));
-}
+ function keyword2hsl(args) {
+ return rgb2hsl(keyword2rgb(args));
+ }
-function keyword2hsv(args) {
- return rgb2hsv(keyword2rgb(args));
-}
+ function keyword2hsv(args) {
+ return rgb2hsv(keyword2rgb(args));
+ }
-function keyword2hwb(args) {
- return rgb2hwb(keyword2rgb(args));
-}
+ function keyword2hwb(args) {
+ return rgb2hwb(keyword2rgb(args));
+ }
-function keyword2cmyk(args) {
- return rgb2cmyk(keyword2rgb(args));
-}
+ function keyword2cmyk(args) {
+ return rgb2cmyk(keyword2rgb(args));
+ }
-function keyword2lab(args) {
- return rgb2lab(keyword2rgb(args));
-}
+ function keyword2lab(args) {
+ return rgb2lab(keyword2rgb(args));
+ }
-function keyword2xyz(args) {
- return rgb2xyz(keyword2rgb(args));
-}
+ function keyword2xyz(args) {
+ return rgb2xyz(keyword2rgb(args));
+ }
-var cssKeywords = {
- aliceblue: [240,248,255],
- antiquewhite: [250,235,215],
- aqua: [0,255,255],
- aquamarine: [127,255,212],
- azure: [240,255,255],
- beige: [245,245,220],
- bisque: [255,228,196],
- black: [0,0,0],
- blanchedalmond: [255,235,205],
- blue: [0,0,255],
- blueviolet: [138,43,226],
- brown: [165,42,42],
- burlywood: [222,184,135],
- cadetblue: [95,158,160],
- chartreuse: [127,255,0],
- chocolate: [210,105,30],
- coral: [255,127,80],
- cornflowerblue: [100,149,237],
- cornsilk: [255,248,220],
- crimson: [220,20,60],
- cyan: [0,255,255],
- darkblue: [0,0,139],
- darkcyan: [0,139,139],
- darkgoldenrod: [184,134,11],
- darkgray: [169,169,169],
- darkgreen: [0,100,0],
- darkgrey: [169,169,169],
- darkkhaki: [189,183,107],
- darkmagenta: [139,0,139],
- darkolivegreen: [85,107,47],
- darkorange: [255,140,0],
- darkorchid: [153,50,204],
- darkred: [139,0,0],
- darksalmon: [233,150,122],
- darkseagreen: [143,188,143],
- darkslateblue: [72,61,139],
- darkslategray: [47,79,79],
- darkslategrey: [47,79,79],
- darkturquoise: [0,206,209],
- darkviolet: [148,0,211],
- deeppink: [255,20,147],
- deepskyblue: [0,191,255],
- dimgray: [105,105,105],
- dimgrey: [105,105,105],
- dodgerblue: [30,144,255],
- firebrick: [178,34,34],
- floralwhite: [255,250,240],
- forestgreen: [34,139,34],
- fuchsia: [255,0,255],
- gainsboro: [220,220,220],
- ghostwhite: [248,248,255],
- gold: [255,215,0],
- goldenrod: [218,165,32],
- gray: [128,128,128],
- green: [0,128,0],
- greenyellow: [173,255,47],
- grey: [128,128,128],
- honeydew: [240,255,240],
- hotpink: [255,105,180],
- indianred: [205,92,92],
- indigo: [75,0,130],
- ivory: [255,255,240],
- khaki: [240,230,140],
- lavender: [230,230,250],
- lavenderblush: [255,240,245],
- lawngreen: [124,252,0],
- lemonchiffon: [255,250,205],
- lightblue: [173,216,230],
- lightcoral: [240,128,128],
- lightcyan: [224,255,255],
- lightgoldenrodyellow: [250,250,210],
- lightgray: [211,211,211],
- lightgreen: [144,238,144],
- lightgrey: [211,211,211],
- lightpink: [255,182,193],
- lightsalmon: [255,160,122],
- lightseagreen: [32,178,170],
- lightskyblue: [135,206,250],
- lightslategray: [119,136,153],
- lightslategrey: [119,136,153],
- lightsteelblue: [176,196,222],
- lightyellow: [255,255,224],
- lime: [0,255,0],
- limegreen: [50,205,50],
- linen: [250,240,230],
- magenta: [255,0,255],
- maroon: [128,0,0],
- mediumaquamarine: [102,205,170],
- mediumblue: [0,0,205],
- mediumorchid: [186,85,211],
- mediumpurple: [147,112,219],
- mediumseagreen: [60,179,113],
- mediumslateblue: [123,104,238],
- mediumspringgreen: [0,250,154],
- mediumturquoise: [72,209,204],
- mediumvioletred: [199,21,133],
- midnightblue: [25,25,112],
- mintcream: [245,255,250],
- mistyrose: [255,228,225],
- moccasin: [255,228,181],
- navajowhite: [255,222,173],
- navy: [0,0,128],
- oldlace: [253,245,230],
- olive: [128,128,0],
- olivedrab: [107,142,35],
- orange: [255,165,0],
- orangered: [255,69,0],
- orchid: [218,112,214],
- palegoldenrod: [238,232,170],
- palegreen: [152,251,152],
- paleturquoise: [175,238,238],
- palevioletred: [219,112,147],
- papayawhip: [255,239,213],
- peachpuff: [255,218,185],
- peru: [205,133,63],
- pink: [255,192,203],
- plum: [221,160,221],
- powderblue: [176,224,230],
- purple: [128,0,128],
- rebeccapurple: [102, 51, 153],
- red: [255,0,0],
- rosybrown: [188,143,143],
- royalblue: [65,105,225],
- saddlebrown: [139,69,19],
- salmon: [250,128,114],
- sandybrown: [244,164,96],
- seagreen: [46,139,87],
- seashell: [255,245,238],
- sienna: [160,82,45],
- silver: [192,192,192],
- skyblue: [135,206,235],
- slateblue: [106,90,205],
- slategray: [112,128,144],
- slategrey: [112,128,144],
- snow: [255,250,250],
- springgreen: [0,255,127],
- steelblue: [70,130,180],
- tan: [210,180,140],
- teal: [0,128,128],
- thistle: [216,191,216],
- tomato: [255,99,71],
- turquoise: [64,224,208],
- violet: [238,130,238],
- wheat: [245,222,179],
- white: [255,255,255],
- whitesmoke: [245,245,245],
- yellow: [255,255,0],
- yellowgreen: [154,205,50]
-};
+ var cssKeywords = {
+ aliceblue: [240,248,255],
+ antiquewhite: [250,235,215],
+ aqua: [0,255,255],
+ aquamarine: [127,255,212],
+ azure: [240,255,255],
+ beige: [245,245,220],
+ bisque: [255,228,196],
+ black: [0,0,0],
+ blanchedalmond: [255,235,205],
+ blue: [0,0,255],
+ blueviolet: [138,43,226],
+ brown: [165,42,42],
+ burlywood: [222,184,135],
+ cadetblue: [95,158,160],
+ chartreuse: [127,255,0],
+ chocolate: [210,105,30],
+ coral: [255,127,80],
+ cornflowerblue: [100,149,237],
+ cornsilk: [255,248,220],
+ crimson: [220,20,60],
+ cyan: [0,255,255],
+ darkblue: [0,0,139],
+ darkcyan: [0,139,139],
+ darkgoldenrod: [184,134,11],
+ darkgray: [169,169,169],
+ darkgreen: [0,100,0],
+ darkgrey: [169,169,169],
+ darkkhaki: [189,183,107],
+ darkmagenta: [139,0,139],
+ darkolivegreen: [85,107,47],
+ darkorange: [255,140,0],
+ darkorchid: [153,50,204],
+ darkred: [139,0,0],
+ darksalmon: [233,150,122],
+ darkseagreen: [143,188,143],
+ darkslateblue: [72,61,139],
+ darkslategray: [47,79,79],
+ darkslategrey: [47,79,79],
+ darkturquoise: [0,206,209],
+ darkviolet: [148,0,211],
+ deeppink: [255,20,147],
+ deepskyblue: [0,191,255],
+ dimgray: [105,105,105],
+ dimgrey: [105,105,105],
+ dodgerblue: [30,144,255],
+ firebrick: [178,34,34],
+ floralwhite: [255,250,240],
+ forestgreen: [34,139,34],
+ fuchsia: [255,0,255],
+ gainsboro: [220,220,220],
+ ghostwhite: [248,248,255],
+ gold: [255,215,0],
+ goldenrod: [218,165,32],
+ gray: [128,128,128],
+ green: [0,128,0],
+ greenyellow: [173,255,47],
+ grey: [128,128,128],
+ honeydew: [240,255,240],
+ hotpink: [255,105,180],
+ indianred: [205,92,92],
+ indigo: [75,0,130],
+ ivory: [255,255,240],
+ khaki: [240,230,140],
+ lavender: [230,230,250],
+ lavenderblush: [255,240,245],
+ lawngreen: [124,252,0],
+ lemonchiffon: [255,250,205],
+ lightblue: [173,216,230],
+ lightcoral: [240,128,128],
+ lightcyan: [224,255,255],
+ lightgoldenrodyellow: [250,250,210],
+ lightgray: [211,211,211],
+ lightgreen: [144,238,144],
+ lightgrey: [211,211,211],
+ lightpink: [255,182,193],
+ lightsalmon: [255,160,122],
+ lightseagreen: [32,178,170],
+ lightskyblue: [135,206,250],
+ lightslategray: [119,136,153],
+ lightslategrey: [119,136,153],
+ lightsteelblue: [176,196,222],
+ lightyellow: [255,255,224],
+ lime: [0,255,0],
+ limegreen: [50,205,50],
+ linen: [250,240,230],
+ magenta: [255,0,255],
+ maroon: [128,0,0],
+ mediumaquamarine: [102,205,170],
+ mediumblue: [0,0,205],
+ mediumorchid: [186,85,211],
+ mediumpurple: [147,112,219],
+ mediumseagreen: [60,179,113],
+ mediumslateblue: [123,104,238],
+ mediumspringgreen: [0,250,154],
+ mediumturquoise: [72,209,204],
+ mediumvioletred: [199,21,133],
+ midnightblue: [25,25,112],
+ mintcream: [245,255,250],
+ mistyrose: [255,228,225],
+ moccasin: [255,228,181],
+ navajowhite: [255,222,173],
+ navy: [0,0,128],
+ oldlace: [253,245,230],
+ olive: [128,128,0],
+ olivedrab: [107,142,35],
+ orange: [255,165,0],
+ orangered: [255,69,0],
+ orchid: [218,112,214],
+ palegoldenrod: [238,232,170],
+ palegreen: [152,251,152],
+ paleturquoise: [175,238,238],
+ palevioletred: [219,112,147],
+ papayawhip: [255,239,213],
+ peachpuff: [255,218,185],
+ peru: [205,133,63],
+ pink: [255,192,203],
+ plum: [221,160,221],
+ powderblue: [176,224,230],
+ purple: [128,0,128],
+ rebeccapurple: [102, 51, 153],
+ red: [255,0,0],
+ rosybrown: [188,143,143],
+ royalblue: [65,105,225],
+ saddlebrown: [139,69,19],
+ salmon: [250,128,114],
+ sandybrown: [244,164,96],
+ seagreen: [46,139,87],
+ seashell: [255,245,238],
+ sienna: [160,82,45],
+ silver: [192,192,192],
+ skyblue: [135,206,235],
+ slateblue: [106,90,205],
+ slategray: [112,128,144],
+ slategrey: [112,128,144],
+ snow: [255,250,250],
+ springgreen: [0,255,127],
+ steelblue: [70,130,180],
+ tan: [210,180,140],
+ teal: [0,128,128],
+ thistle: [216,191,216],
+ tomato: [255,99,71],
+ turquoise: [64,224,208],
+ violet: [238,130,238],
+ wheat: [245,222,179],
+ white: [255,255,255],
+ whitesmoke: [245,245,245],
+ yellow: [255,255,0],
+ yellowgreen: [154,205,50]
+ };
-var reverseKeywords = {};
-for (var key in cssKeywords) {
- reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
-}
+ var reverseKeywords = {};
+ for (var key in cssKeywords) {
+ reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
+ }
},{}],5:[function(require,module,exports){
-var conversions = require(4);
+ var conversions = require(4);
-var convert = function() {
- return new Converter();
-}
-
-for (var func in conversions) {
- // export Raw versions
- convert[func + "Raw"] = (function(func) {
- // accept array or plain args
- return function(arg) {
- if (typeof arg == "number")
- arg = Array.prototype.slice.call(arguments);
- return conversions[func](arg);
+ var convert = function() {
+ return new Converter();
}
- })(func);
- var pair = /(\w+)2(\w+)/.exec(func),
- from = pair[1],
- to = pair[2];
+ for (var func in conversions) {
+ // export Raw versions
+ convert[func + "Raw"] = (function(func) {
+ // accept array or plain args
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+ return conversions[func](arg);
+ }
+ })(func);
- // export rgb2hsl and ["rgb"]["hsl"]
- convert[from] = convert[from] || {};
+ var pair = /(\w+)2(\w+)/.exec(func),
+ from = pair[1],
+ to = pair[2];
- convert[from][to] = convert[func] = (function(func) {
- return function(arg) {
- if (typeof arg == "number")
- arg = Array.prototype.slice.call(arguments);
-
- var val = conversions[func](arg);
- if (typeof val == "string" || val === undefined)
- return val; // keyword
+ // export rgb2hsl and ["rgb"]["hsl"]
+ convert[from] = convert[from] || {};
- for (var i = 0; i < val.length; i++)
- val[i] = Math.round(val[i]);
- return val;
+ convert[from][to] = convert[func] = (function(func) {
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+
+ var val = conversions[func](arg);
+ if (typeof val == "string" || val === undefined)
+ return val; // keyword
+
+ for (var i = 0; i < val.length; i++)
+ val[i] = Math.round(val[i]);
+ return val;
+ }
+ })(func);
}
- })(func);
-}
-/* Converter does lazy conversion and caching */
-var Converter = function() {
- this.convs = {};
-};
+ /* Converter does lazy conversion and caching */
+ var Converter = function() {
+ this.convs = {};
+ };
-/* Either get the values for a space or
- set the values for a space, depending on args */
-Converter.prototype.routeSpace = function(space, args) {
- var values = args[0];
- if (values === undefined) {
- // color.rgb()
- return this.getValues(space);
- }
- // color.rgb(10, 10, 10)
- if (typeof values == "number") {
- values = Array.prototype.slice.call(args);
- }
+ /* Either get the values for a space or
+ set the values for a space, depending on args */
+ Converter.prototype.routeSpace = function(space, args) {
+ var values = args[0];
+ if (values === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+ // color.rgb(10, 10, 10)
+ if (typeof values == "number") {
+ values = Array.prototype.slice.call(args);
+ }
- return this.setValues(space, values);
-};
-
-/* Set the values for a space, invalidating cache */
-Converter.prototype.setValues = function(space, values) {
- this.space = space;
- this.convs = {};
- this.convs[space] = values;
- return this;
-};
+ return this.setValues(space, values);
+ };
-/* Get the values for a space. If there's already
- a conversion for the space, fetch it, otherwise
- compute it */
-Converter.prototype.getValues = function(space) {
- var vals = this.convs[space];
- if (!vals) {
- var fspace = this.space,
- from = this.convs[fspace];
- vals = convert[fspace][space](from);
+ /* Set the values for a space, invalidating cache */
+ Converter.prototype.setValues = function(space, values) {
+ this.space = space;
+ this.convs = {};
+ this.convs[space] = values;
+ return this;
+ };
- this.convs[space] = vals;
- }
- return vals;
-};
+ /* Get the values for a space. If there's already
+ a conversion for the space, fetch it, otherwise
+ compute it */
+ Converter.prototype.getValues = function(space) {
+ var vals = this.convs[space];
+ if (!vals) {
+ var fspace = this.space,
+ from = this.convs[fspace];
+ vals = convert[fspace][space](from);
-["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
- Converter.prototype[space] = function(vals) {
- return this.routeSpace(space, arguments);
- }
-});
+ this.convs[space] = vals;
+ }
+ return vals;
+ };
-module.exports = convert;
+ ["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
+ Converter.prototype[space] = function(vals) {
+ return this.routeSpace(space, arguments);
+ }
+ });
+
+ module.exports = convert;
},{"4":4}],6:[function(require,module,exports){
-module.exports = {
- "aliceblue": [240, 248, 255],
- "antiquewhite": [250, 235, 215],
- "aqua": [0, 255, 255],
- "aquamarine": [127, 255, 212],
- "azure": [240, 255, 255],
- "beige": [245, 245, 220],
- "bisque": [255, 228, 196],
- "black": [0, 0, 0],
- "blanchedalmond": [255, 235, 205],
- "blue": [0, 0, 255],
- "blueviolet": [138, 43, 226],
- "brown": [165, 42, 42],
- "burlywood": [222, 184, 135],
- "cadetblue": [95, 158, 160],
- "chartreuse": [127, 255, 0],
- "chocolate": [210, 105, 30],
- "coral": [255, 127, 80],
- "cornflowerblue": [100, 149, 237],
- "cornsilk": [255, 248, 220],
- "crimson": [220, 20, 60],
- "cyan": [0, 255, 255],
- "darkblue": [0, 0, 139],
- "darkcyan": [0, 139, 139],
- "darkgoldenrod": [184, 134, 11],
- "darkgray": [169, 169, 169],
- "darkgreen": [0, 100, 0],
- "darkgrey": [169, 169, 169],
- "darkkhaki": [189, 183, 107],
- "darkmagenta": [139, 0, 139],
- "darkolivegreen": [85, 107, 47],
- "darkorange": [255, 140, 0],
- "darkorchid": [153, 50, 204],
- "darkred": [139, 0, 0],
- "darksalmon": [233, 150, 122],
- "darkseagreen": [143, 188, 143],
- "darkslateblue": [72, 61, 139],
- "darkslategray": [47, 79, 79],
- "darkslategrey": [47, 79, 79],
- "darkturquoise": [0, 206, 209],
- "darkviolet": [148, 0, 211],
- "deeppink": [255, 20, 147],
- "deepskyblue": [0, 191, 255],
- "dimgray": [105, 105, 105],
- "dimgrey": [105, 105, 105],
- "dodgerblue": [30, 144, 255],
- "firebrick": [178, 34, 34],
- "floralwhite": [255, 250, 240],
- "forestgreen": [34, 139, 34],
- "fuchsia": [255, 0, 255],
- "gainsboro": [220, 220, 220],
- "ghostwhite": [248, 248, 255],
- "gold": [255, 215, 0],
- "goldenrod": [218, 165, 32],
- "gray": [128, 128, 128],
- "green": [0, 128, 0],
- "greenyellow": [173, 255, 47],
- "grey": [128, 128, 128],
- "honeydew": [240, 255, 240],
- "hotpink": [255, 105, 180],
- "indianred": [205, 92, 92],
- "indigo": [75, 0, 130],
- "ivory": [255, 255, 240],
- "khaki": [240, 230, 140],
- "lavender": [230, 230, 250],
- "lavenderblush": [255, 240, 245],
- "lawngreen": [124, 252, 0],
- "lemonchiffon": [255, 250, 205],
- "lightblue": [173, 216, 230],
- "lightcoral": [240, 128, 128],
- "lightcyan": [224, 255, 255],
- "lightgoldenrodyellow": [250, 250, 210],
- "lightgray": [211, 211, 211],
- "lightgreen": [144, 238, 144],
- "lightgrey": [211, 211, 211],
- "lightpink": [255, 182, 193],
- "lightsalmon": [255, 160, 122],
- "lightseagreen": [32, 178, 170],
- "lightskyblue": [135, 206, 250],
- "lightslategray": [119, 136, 153],
- "lightslategrey": [119, 136, 153],
- "lightsteelblue": [176, 196, 222],
- "lightyellow": [255, 255, 224],
- "lime": [0, 255, 0],
- "limegreen": [50, 205, 50],
- "linen": [250, 240, 230],
- "magenta": [255, 0, 255],
- "maroon": [128, 0, 0],
- "mediumaquamarine": [102, 205, 170],
- "mediumblue": [0, 0, 205],
- "mediumorchid": [186, 85, 211],
- "mediumpurple": [147, 112, 219],
- "mediumseagreen": [60, 179, 113],
- "mediumslateblue": [123, 104, 238],
- "mediumspringgreen": [0, 250, 154],
- "mediumturquoise": [72, 209, 204],
- "mediumvioletred": [199, 21, 133],
- "midnightblue": [25, 25, 112],
- "mintcream": [245, 255, 250],
- "mistyrose": [255, 228, 225],
- "moccasin": [255, 228, 181],
- "navajowhite": [255, 222, 173],
- "navy": [0, 0, 128],
- "oldlace": [253, 245, 230],
- "olive": [128, 128, 0],
- "olivedrab": [107, 142, 35],
- "orange": [255, 165, 0],
- "orangered": [255, 69, 0],
- "orchid": [218, 112, 214],
- "palegoldenrod": [238, 232, 170],
- "palegreen": [152, 251, 152],
- "paleturquoise": [175, 238, 238],
- "palevioletred": [219, 112, 147],
- "papayawhip": [255, 239, 213],
- "peachpuff": [255, 218, 185],
- "peru": [205, 133, 63],
- "pink": [255, 192, 203],
- "plum": [221, 160, 221],
- "powderblue": [176, 224, 230],
- "purple": [128, 0, 128],
- "rebeccapurple": [102, 51, 153],
- "red": [255, 0, 0],
- "rosybrown": [188, 143, 143],
- "royalblue": [65, 105, 225],
- "saddlebrown": [139, 69, 19],
- "salmon": [250, 128, 114],
- "sandybrown": [244, 164, 96],
- "seagreen": [46, 139, 87],
- "seashell": [255, 245, 238],
- "sienna": [160, 82, 45],
- "silver": [192, 192, 192],
- "skyblue": [135, 206, 235],
- "slateblue": [106, 90, 205],
- "slategray": [112, 128, 144],
- "slategrey": [112, 128, 144],
- "snow": [255, 250, 250],
- "springgreen": [0, 255, 127],
- "steelblue": [70, 130, 180],
- "tan": [210, 180, 140],
- "teal": [0, 128, 128],
- "thistle": [216, 191, 216],
- "tomato": [255, 99, 71],
- "turquoise": [64, 224, 208],
- "violet": [238, 130, 238],
- "wheat": [245, 222, 179],
- "white": [255, 255, 255],
- "whitesmoke": [245, 245, 245],
- "yellow": [255, 255, 0],
- "yellowgreen": [154, 205, 50]
-};
+ module.exports = {
+ "aliceblue": [240, 248, 255],
+ "antiquewhite": [250, 235, 215],
+ "aqua": [0, 255, 255],
+ "aquamarine": [127, 255, 212],
+ "azure": [240, 255, 255],
+ "beige": [245, 245, 220],
+ "bisque": [255, 228, 196],
+ "black": [0, 0, 0],
+ "blanchedalmond": [255, 235, 205],
+ "blue": [0, 0, 255],
+ "blueviolet": [138, 43, 226],
+ "brown": [165, 42, 42],
+ "burlywood": [222, 184, 135],
+ "cadetblue": [95, 158, 160],
+ "chartreuse": [127, 255, 0],
+ "chocolate": [210, 105, 30],
+ "coral": [255, 127, 80],
+ "cornflowerblue": [100, 149, 237],
+ "cornsilk": [255, 248, 220],
+ "crimson": [220, 20, 60],
+ "cyan": [0, 255, 255],
+ "darkblue": [0, 0, 139],
+ "darkcyan": [0, 139, 139],
+ "darkgoldenrod": [184, 134, 11],
+ "darkgray": [169, 169, 169],
+ "darkgreen": [0, 100, 0],
+ "darkgrey": [169, 169, 169],
+ "darkkhaki": [189, 183, 107],
+ "darkmagenta": [139, 0, 139],
+ "darkolivegreen": [85, 107, 47],
+ "darkorange": [255, 140, 0],
+ "darkorchid": [153, 50, 204],
+ "darkred": [139, 0, 0],
+ "darksalmon": [233, 150, 122],
+ "darkseagreen": [143, 188, 143],
+ "darkslateblue": [72, 61, 139],
+ "darkslategray": [47, 79, 79],
+ "darkslategrey": [47, 79, 79],
+ "darkturquoise": [0, 206, 209],
+ "darkviolet": [148, 0, 211],
+ "deeppink": [255, 20, 147],
+ "deepskyblue": [0, 191, 255],
+ "dimgray": [105, 105, 105],
+ "dimgrey": [105, 105, 105],
+ "dodgerblue": [30, 144, 255],
+ "firebrick": [178, 34, 34],
+ "floralwhite": [255, 250, 240],
+ "forestgreen": [34, 139, 34],
+ "fuchsia": [255, 0, 255],
+ "gainsboro": [220, 220, 220],
+ "ghostwhite": [248, 248, 255],
+ "gold": [255, 215, 0],
+ "goldenrod": [218, 165, 32],
+ "gray": [128, 128, 128],
+ "green": [0, 128, 0],
+ "greenyellow": [173, 255, 47],
+ "grey": [128, 128, 128],
+ "honeydew": [240, 255, 240],
+ "hotpink": [255, 105, 180],
+ "indianred": [205, 92, 92],
+ "indigo": [75, 0, 130],
+ "ivory": [255, 255, 240],
+ "khaki": [240, 230, 140],
+ "lavender": [230, 230, 250],
+ "lavenderblush": [255, 240, 245],
+ "lawngreen": [124, 252, 0],
+ "lemonchiffon": [255, 250, 205],
+ "lightblue": [173, 216, 230],
+ "lightcoral": [240, 128, 128],
+ "lightcyan": [224, 255, 255],
+ "lightgoldenrodyellow": [250, 250, 210],
+ "lightgray": [211, 211, 211],
+ "lightgreen": [144, 238, 144],
+ "lightgrey": [211, 211, 211],
+ "lightpink": [255, 182, 193],
+ "lightsalmon": [255, 160, 122],
+ "lightseagreen": [32, 178, 170],
+ "lightskyblue": [135, 206, 250],
+ "lightslategray": [119, 136, 153],
+ "lightslategrey": [119, 136, 153],
+ "lightsteelblue": [176, 196, 222],
+ "lightyellow": [255, 255, 224],
+ "lime": [0, 255, 0],
+ "limegreen": [50, 205, 50],
+ "linen": [250, 240, 230],
+ "magenta": [255, 0, 255],
+ "maroon": [128, 0, 0],
+ "mediumaquamarine": [102, 205, 170],
+ "mediumblue": [0, 0, 205],
+ "mediumorchid": [186, 85, 211],
+ "mediumpurple": [147, 112, 219],
+ "mediumseagreen": [60, 179, 113],
+ "mediumslateblue": [123, 104, 238],
+ "mediumspringgreen": [0, 250, 154],
+ "mediumturquoise": [72, 209, 204],
+ "mediumvioletred": [199, 21, 133],
+ "midnightblue": [25, 25, 112],
+ "mintcream": [245, 255, 250],
+ "mistyrose": [255, 228, 225],
+ "moccasin": [255, 228, 181],
+ "navajowhite": [255, 222, 173],
+ "navy": [0, 0, 128],
+ "oldlace": [253, 245, 230],
+ "olive": [128, 128, 0],
+ "olivedrab": [107, 142, 35],
+ "orange": [255, 165, 0],
+ "orangered": [255, 69, 0],
+ "orchid": [218, 112, 214],
+ "palegoldenrod": [238, 232, 170],
+ "palegreen": [152, 251, 152],
+ "paleturquoise": [175, 238, 238],
+ "palevioletred": [219, 112, 147],
+ "papayawhip": [255, 239, 213],
+ "peachpuff": [255, 218, 185],
+ "peru": [205, 133, 63],
+ "pink": [255, 192, 203],
+ "plum": [221, 160, 221],
+ "powderblue": [176, 224, 230],
+ "purple": [128, 0, 128],
+ "rebeccapurple": [102, 51, 153],
+ "red": [255, 0, 0],
+ "rosybrown": [188, 143, 143],
+ "royalblue": [65, 105, 225],
+ "saddlebrown": [139, 69, 19],
+ "salmon": [250, 128, 114],
+ "sandybrown": [244, 164, 96],
+ "seagreen": [46, 139, 87],
+ "seashell": [255, 245, 238],
+ "sienna": [160, 82, 45],
+ "silver": [192, 192, 192],
+ "skyblue": [135, 206, 235],
+ "slateblue": [106, 90, 205],
+ "slategray": [112, 128, 144],
+ "slategrey": [112, 128, 144],
+ "snow": [255, 250, 250],
+ "springgreen": [0, 255, 127],
+ "steelblue": [70, 130, 180],
+ "tan": [210, 180, 140],
+ "teal": [0, 128, 128],
+ "thistle": [216, 191, 216],
+ "tomato": [255, 99, 71],
+ "turquoise": [64, 224, 208],
+ "violet": [238, 130, 238],
+ "wheat": [245, 222, 179],
+ "white": [255, 255, 255],
+ "whitesmoke": [245, 245, 245],
+ "yellow": [255, 255, 0],
+ "yellowgreen": [154, 205, 50]
+ };
},{}],7:[function(require,module,exports){
-/**
- * @namespace Chart
- */
-var Chart = require(27)();
+ /**
+ * @namespace Chart
+ */
+ var Chart = require(28)();
-require(26)(Chart);
-require(22)(Chart);
-require(25)(Chart);
-require(21)(Chart);
-require(23)(Chart);
-require(24)(Chart);
-require(28)(Chart);
-require(32)(Chart);
-require(30)(Chart);
-require(31)(Chart);
-require(33)(Chart);
-require(29)(Chart);
-require(34)(Chart);
+ require(26)(Chart);
+ require(40)(Chart);
+ require(22)(Chart);
+ require(25)(Chart);
+ require(30)(Chart);
+ require(21)(Chart);
+ require(23)(Chart);
+ require(24)(Chart);
+ require(29)(Chart);
+ require(32)(Chart);
+ require(33)(Chart);
+ require(31)(Chart);
+ require(27)(Chart);
+ require(34)(Chart);
-require(35)(Chart);
-require(36)(Chart);
-require(37)(Chart);
-require(38)(Chart);
+ require(35)(Chart);
+ require(36)(Chart);
+ require(37)(Chart);
+ require(38)(Chart);
-require(41)(Chart);
-require(39)(Chart);
-require(40)(Chart);
-require(42)(Chart);
-require(43)(Chart);
-require(44)(Chart);
+ require(46)(Chart);
+ require(44)(Chart);
+ require(45)(Chart);
+ require(47)(Chart);
+ require(48)(Chart);
+ require(49)(Chart);
// Controllers must be loaded after elements
// See Chart.core.datasetController.dataElementType
-require(15)(Chart);
-require(16)(Chart);
-require(17)(Chart);
-require(18)(Chart);
-require(19)(Chart);
-require(20)(Chart);
+ require(15)(Chart);
+ require(16)(Chart);
+ require(17)(Chart);
+ require(18)(Chart);
+ require(19)(Chart);
+ require(20)(Chart);
-require(8)(Chart);
-require(9)(Chart);
-require(10)(Chart);
-require(11)(Chart);
-require(12)(Chart);
-require(13)(Chart);
-require(14)(Chart);
+ require(8)(Chart);
+ require(9)(Chart);
+ require(10)(Chart);
+ require(11)(Chart);
+ require(12)(Chart);
+ require(13)(Chart);
+ require(14)(Chart);
-window.Chart = module.exports = Chart;
+// Loading built-it plugins
+ var plugins = [];
-},{"10":10,"11":11,"12":12,"13":13,"14":14,"15":15,"16":16,"17":17,"18":18,"19":19,"20":20,"21":21,"22":22,"23":23,"24":24,"25":25,"26":26,"27":27,"28":28,"29":29,"30":30,"31":31,"32":32,"33":33,"34":34,"35":35,"36":36,"37":37,"38":38,"39":39,"40":40,"41":41,"42":42,"43":43,"44":44,"8":8,"9":9}],8:[function(require,module,exports){
-"use strict";
+ plugins.push(
+ require(41)(Chart),
+ require(42)(Chart),
+ require(43)(Chart)
+ );
-module.exports = function(Chart) {
+ Chart.plugins.register(plugins);
- Chart.Bar = function(context, config) {
- config.type = 'bar';
+ module.exports = Chart;
+ if (typeof window !== 'undefined') {
+ window.Chart = Chart;
+ }
- return new Chart(context, config);
- };
+},{"10":10,"11":11,"12":12,"13":13,"14":14,"15":15,"16":16,"17":17,"18":18,"19":19,"20":20,"21":21,"22":22,"23":23,"24":24,"25":25,"26":26,"27":27,"28":28,"29":29,"30":30,"31":31,"32":32,"33":33,"34":34,"35":35,"36":36,"37":37,"38":38,"40":40,"41":41,"42":42,"43":43,"44":44,"45":45,"46":46,"47":47,"48":48,"49":49,"8":8,"9":9}],8:[function(require,module,exports){
+ 'use strict';
-};
+ module.exports = function(Chart) {
+
+ Chart.Bar = function(context, config) {
+ config.type = 'bar';
+
+ return new Chart(context, config);
+ };
+
+ };
+
},{}],9:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- Chart.Bubble = function(context, config) {
- config.type = 'bubble';
- return new Chart(context, config);
- };
+ Chart.Bubble = function(context, config) {
+ config.type = 'bubble';
+ return new Chart(context, config);
+ };
-};
+ };
+
},{}],10:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- Chart.Doughnut = function(context, config) {
- config.type = 'doughnut';
+ Chart.Doughnut = function(context, config) {
+ config.type = 'doughnut';
- return new Chart(context, config);
- };
+ return new Chart(context, config);
+ };
-};
+ };
+
},{}],11:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- Chart.Line = function(context, config) {
- config.type = 'line';
+ Chart.Line = function(context, config) {
+ config.type = 'line';
- return new Chart(context, config);
- };
+ return new Chart(context, config);
+ };
-};
+ };
+
},{}],12:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- Chart.PolarArea = function(context, config) {
- config.type = 'polarArea';
+ Chart.PolarArea = function(context, config) {
+ config.type = 'polarArea';
- return new Chart(context, config);
- };
+ return new Chart(context, config);
+ };
-};
+ };
+
},{}],13:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
-
- Chart.Radar = function(context, config) {
- config.options = Chart.helpers.configMerge({ aspectRatio: 1 }, config.options);
- config.type = 'radar';
+ module.exports = function(Chart) {
- return new Chart(context, config);
- };
+ Chart.Radar = function(context, config) {
+ config.type = 'radar';
-};
+ return new Chart(context, config);
+ };
+
+ };
},{}],14:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var defaultConfig = {
- hover: {
- mode: 'single'
- },
+ var defaultConfig = {
+ hover: {
+ mode: 'single'
+ },
- scales: {
- xAxes: [{
- type: "linear", // scatter should not use a category axis
- position: "bottom",
- id: "x-axis-1" // need an ID so datasets can reference the scale
- }],
- yAxes: [{
- type: "linear",
- position: "left",
- id: "y-axis-1"
- }]
- },
+ scales: {
+ xAxes: [{
+ type: 'linear', // scatter should not use a category axis
+ position: 'bottom',
+ id: 'x-axis-1' // need an ID so datasets can reference the scale
+ }],
+ yAxes: [{
+ type: 'linear',
+ position: 'left',
+ id: 'y-axis-1'
+ }]
+ },
- tooltips: {
- callbacks: {
- title: function() {
- // Title doesn't make sense for scatter since we format the data as a point
- return '';
- },
- label: function(tooltipItem) {
- return '(' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ')';
- }
- }
- }
- };
+ tooltips: {
+ callbacks: {
+ title: function() {
+ // Title doesn't make sense for scatter since we format the data as a point
+ return '';
+ },
+ label: function(tooltipItem) {
+ return '(' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ')';
+ }
+ }
+ }
+ };
- // Register the default config for this type
- Chart.defaults.scatter = defaultConfig;
+ // Register the default config for this type
+ Chart.defaults.scatter = defaultConfig;
- // Scatter charts use line controllers
- Chart.controllers.scatter = Chart.controllers.line;
+ // Scatter charts use line controllers
+ Chart.controllers.scatter = Chart.controllers.line;
- Chart.Scatter = function(context, config) {
- config.type = 'scatter';
- return new Chart(context, config);
- };
+ Chart.Scatter = function(context, config) {
+ config.type = 'scatter';
+ return new Chart(context, config);
+ };
-};
+ };
+
},{}],15:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.bar = {
- hover: {
- mode: "label"
- },
+ Chart.defaults.bar = {
+ hover: {
+ mode: 'label'
+ },
- scales: {
- xAxes: [{
- type: "category",
+ scales: {
+ xAxes: [{
+ type: 'category',
- // Specific to Bar Controller
- categoryPercentage: 0.8,
- barPercentage: 0.9,
+ // Specific to Bar Controller
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
- // grid line settings
- gridLines: {
- offsetGridLines: true
- }
- }],
- yAxes: [{
- type: "linear"
- }]
- }
- };
+ // grid line settings
+ gridLines: {
+ offsetGridLines: true
+ }
+ }],
+ yAxes: [{
+ type: 'linear'
+ }]
+ }
+ };
- Chart.controllers.bar = Chart.DatasetController.extend({
+ Chart.controllers.bar = Chart.DatasetController.extend({
- dataElementType: Chart.elements.Rectangle,
+ dataElementType: Chart.elements.Rectangle,
- initialize: function(chart, datasetIndex) {
- Chart.DatasetController.prototype.initialize.call(this, chart, datasetIndex);
+ initialize: function() {
+ var me = this;
+ var meta;
- // Use this to indicate that this is a bar dataset.
- this.getMeta().bar = true;
- },
+ Chart.DatasetController.prototype.initialize.apply(me, arguments);
- // Get the number of datasets that display bars. We use this to correctly calculate the bar width
- getBarCount: function() {
- var me = this;
- var barCount = 0;
- helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
- var meta = me.chart.getDatasetMeta(datasetIndex);
- if (meta.bar && me.chart.isDatasetVisible(datasetIndex)) {
- ++barCount;
- }
- }, me);
- return barCount;
- },
+ meta = me.getMeta();
+ meta.stack = me.getDataset().stack;
+ meta.bar = true;
+ },
- update: function(reset) {
- var me = this;
- helpers.each(me.getMeta().data, function(rectangle, index) {
- me.updateElement(rectangle, index, reset);
- }, me);
- },
+ update: function(reset) {
+ var me = this;
+ var elements = me.getMeta().data;
+ var i, ilen;
- updateElement: function(rectangle, index, reset) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var yScale = me.getScaleForId(meta.yAxisID);
- var scaleBase = yScale.getBasePixel();
- var rectangleElementOptions = me.chart.options.elements.rectangle;
- var custom = rectangle.custom || {};
- var dataset = me.getDataset();
+ me._ruler = me.getRuler();
- helpers.extend(rectangle, {
- // Utility
- _xScale: xScale,
- _yScale: yScale,
- _datasetIndex: me.index,
- _index: index,
+ for (i = 0, ilen = elements.length; i < ilen; ++i) {
+ me.updateElement(elements[i], i, reset);
+ }
+ },
- // Desired view properties
- _model: {
- x: me.calculateBarX(index, me.index),
- y: reset ? scaleBase : me.calculateBarY(index, me.index),
+ updateElement: function(rectangle, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+ var custom = rectangle.custom || {};
+ var rectangleOptions = chart.options.elements.rectangle;
- // Tooltip
- label: me.chart.data.labels[index],
- datasetLabel: dataset.label,
+ rectangle._xScale = me.getScaleForId(meta.xAxisID);
+ rectangle._yScale = me.getScaleForId(meta.yAxisID);
+ rectangle._datasetIndex = me.index;
+ rectangle._index = index;
- // Appearance
- base: reset ? scaleBase : me.calculateBarBase(me.index, index),
- width: me.calculateBarWidth(index),
- backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
- borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
- borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
- borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth)
- }
- });
- rectangle.pivot();
- },
+ rectangle._model = {
+ datasetLabel: dataset.label,
+ label: chart.data.labels[index],
+ borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleOptions.borderSkipped,
+ backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleOptions.backgroundColor),
+ borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleOptions.borderColor),
+ borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleOptions.borderWidth)
+ };
- calculateBarBase: function(datasetIndex, index) {
- var me = this;
- var meta = me.getMeta();
- var yScale = me.getScaleForId(meta.yAxisID);
- var base = 0;
+ me.updateElementGeometry(rectangle, index, reset);
- if (yScale.options.stacked) {
- var chart = me.chart;
- var datasets = chart.data.datasets;
- var value = Number(datasets[datasetIndex].data[index]);
+ rectangle.pivot();
+ },
- for (var i = 0; i < datasetIndex; i++) {
- var currentDs = datasets[i];
- var currentDsMeta = chart.getDatasetMeta(i);
- if (currentDsMeta.bar && currentDsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
- var currentVal = Number(currentDs.data[index]);
- base += value < 0 ? Math.min(currentVal, 0) : Math.max(currentVal, 0);
- }
- }
+ /**
+ * @private
+ */
+ updateElementGeometry: function(rectangle, index, reset) {
+ var me = this;
+ var model = rectangle._model;
+ var vscale = me.getValueScale();
+ var base = vscale.getBasePixel();
+ var horizontal = vscale.isHorizontal();
+ var ruler = me._ruler || me.getRuler();
+ var vpixels = me.calculateBarValuePixels(me.index, index);
+ var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
- return yScale.getPixelForValue(base);
- }
+ model.horizontal = horizontal;
+ model.base = reset? base : vpixels.base;
+ model.x = horizontal? reset? base : vpixels.head : ipixels.center;
+ model.y = horizontal? ipixels.center : reset? base : vpixels.head;
+ model.height = horizontal? ipixels.size : undefined;
+ model.width = horizontal? undefined : ipixels.size;
+ },
- return yScale.getBasePixel();
- },
+ /**
+ * @private
+ */
+ getValueScaleId: function() {
+ return this.getMeta().yAxisID;
+ },
- getRuler: function(index) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var datasetCount = me.getBarCount();
+ /**
+ * @private
+ */
+ getIndexScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
- var tickWidth;
+ /**
+ * @private
+ */
+ getValueScale: function() {
+ return this.getScaleForId(this.getValueScaleId());
+ },
- if (xScale.options.type === 'category') {
- tickWidth = xScale.getPixelForTick(index + 1) - xScale.getPixelForTick(index);
- } else {
- // Average width
- tickWidth = xScale.width / xScale.ticks.length;
- }
- var categoryWidth = tickWidth * xScale.options.categoryPercentage;
- var categorySpacing = (tickWidth - (tickWidth * xScale.options.categoryPercentage)) / 2;
- var fullBarWidth = categoryWidth / datasetCount;
+ /**
+ * @private
+ */
+ getIndexScale: function() {
+ return this.getScaleForId(this.getIndexScaleId());
+ },
- if (xScale.ticks.length !== me.chart.data.labels.length) {
- var perc = xScale.ticks.length / me.chart.data.labels.length;
- fullBarWidth = fullBarWidth * perc;
- }
+ /**
+ * Returns the effective number of stacks based on groups and bar visibility.
+ * @private
+ */
+ getStackCount: function(last) {
+ var me = this;
+ var chart = me.chart;
+ var scale = me.getIndexScale();
+ var stacked = scale.options.stacked;
+ var ilen = last === undefined? chart.data.datasets.length : last + 1;
+ var stacks = [];
+ var i, meta;
- var barWidth = fullBarWidth * xScale.options.barPercentage;
- var barSpacing = fullBarWidth - (fullBarWidth * xScale.options.barPercentage);
+ for (i = 0; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.bar && chart.isDatasetVisible(i) &&
+ (stacked === false ||
+ (stacked === true && stacks.indexOf(meta.stack) === -1) ||
+ (stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
+ stacks.push(meta.stack);
+ }
+ }
- return {
- datasetCount: datasetCount,
- tickWidth: tickWidth,
- categoryWidth: categoryWidth,
- categorySpacing: categorySpacing,
- fullBarWidth: fullBarWidth,
- barWidth: barWidth,
- barSpacing: barSpacing
- };
- },
+ return stacks.length;
+ },
- calculateBarWidth: function(index) {
- var xScale = this.getScaleForId(this.getMeta().xAxisID);
- if (xScale.options.barThickness) {
- return xScale.options.barThickness;
- }
- var ruler = this.getRuler(index);
- return xScale.options.stacked ? ruler.categoryWidth : ruler.barWidth;
- },
+ /**
+ * Returns the stack index for the given dataset based on groups and bar visibility.
+ * @private
+ */
+ getStackIndex: function(datasetIndex) {
+ return this.getStackCount(datasetIndex) - 1;
+ },
- // Get bar index from the given dataset index accounting for the fact that not all bars are visible
- getBarIndex: function(datasetIndex) {
- var barIndex = 0;
- var meta, j;
+ /**
+ * @private
+ */
+ getRuler: function() {
+ var me = this;
+ var scale = me.getIndexScale();
+ var options = scale.options;
+ var stackCount = me.getStackCount();
+ var fullSize = scale.isHorizontal()? scale.width : scale.height;
+ var tickSize = fullSize / scale.ticks.length;
+ var categorySize = tickSize * options.categoryPercentage;
+ var fullBarSize = categorySize / stackCount;
+ var barSize = fullBarSize * options.barPercentage;
- for (j = 0; j < datasetIndex; ++j) {
- meta = this.chart.getDatasetMeta(j);
- if (meta.bar && this.chart.isDatasetVisible(j)) {
- ++barIndex;
- }
- }
+ barSize = Math.min(
+ helpers.getValueOrDefault(options.barThickness, barSize),
+ helpers.getValueOrDefault(options.maxBarThickness, Infinity));
- return barIndex;
- },
+ return {
+ stackCount: stackCount,
+ tickSize: tickSize,
+ categorySize: categorySize,
+ categorySpacing: tickSize - categorySize,
+ fullBarSize: fullBarSize,
+ barSize: barSize,
+ barSpacing: fullBarSize - barSize,
+ scale: scale
+ };
+ },
- calculateBarX: function(index, datasetIndex) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var barIndex = me.getBarIndex(datasetIndex);
+ /**
+ * Note: pixel values are not clamped to the scale area.
+ * @private
+ */
+ calculateBarValuePixels: function(datasetIndex, index) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var scale = me.getValueScale();
+ var datasets = chart.data.datasets;
+ var value = Number(datasets[datasetIndex].data[index]);
+ var stacked = scale.options.stacked;
+ var stack = meta.stack;
+ var start = 0;
+ var i, imeta, ivalue, base, head, size;
- var ruler = me.getRuler(index);
- var leftTick = xScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
- leftTick -= me.chart.isCombo ? (ruler.tickWidth / 2) : 0;
+ if (stacked || (stacked === undefined && stack !== undefined)) {
+ for (i = 0; i < datasetIndex; ++i) {
+ imeta = chart.getDatasetMeta(i);
- if (xScale.options.stacked) {
- return leftTick + (ruler.categoryWidth / 2) + ruler.categorySpacing;
- }
+ if (imeta.bar &&
+ imeta.stack === stack &&
+ imeta.controller.getValueScaleId() === scale.id &&
+ chart.isDatasetVisible(i)) {
- return leftTick +
- (ruler.barWidth / 2) +
- ruler.categorySpacing +
- (ruler.barWidth * barIndex) +
- (ruler.barSpacing / 2) +
- (ruler.barSpacing * barIndex);
- },
+ ivalue = Number(datasets[i].data[index]);
+ if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
+ start += ivalue;
+ }
+ }
+ }
+ }
- calculateBarY: function(index, datasetIndex) {
- var me = this;
- var meta = me.getMeta();
- var yScale = me.getScaleForId(meta.yAxisID);
- var value = Number(me.getDataset().data[index]);
+ base = scale.getPixelForValue(start);
+ head = scale.getPixelForValue(start + value);
+ size = (head - base) / 2;
- if (yScale.options.stacked) {
+ return {
+ size: size,
+ base: base,
+ head: head,
+ center: head + size / 2
+ };
+ },
- var sumPos = 0,
- sumNeg = 0;
+ /**
+ * @private
+ */
+ calculateBarIndexPixels: function(datasetIndex, index, ruler) {
+ var me = this;
+ var scale = ruler.scale;
+ var isCombo = me.chart.isCombo;
+ var stackIndex = me.getStackIndex(datasetIndex);
+ var base = scale.getPixelForValue(null, index, datasetIndex, isCombo);
+ var size = ruler.barSize;
- for (var i = 0; i < datasetIndex; i++) {
- var ds = me.chart.data.datasets[i];
- var dsMeta = me.chart.getDatasetMeta(i);
- if (dsMeta.bar && dsMeta.yAxisID === yScale.id && me.chart.isDatasetVisible(i)) {
- var stackedVal = Number(ds.data[index]);
- if (stackedVal < 0) {
- sumNeg += stackedVal || 0;
- } else {
- sumPos += stackedVal || 0;
- }
- }
- }
+ base -= isCombo? ruler.tickSize / 2 : 0;
+ base += ruler.fullBarSize * stackIndex;
+ base += ruler.categorySpacing / 2;
+ base += ruler.barSpacing / 2;
- if (value < 0) {
- return yScale.getPixelForValue(sumNeg + value);
- } else {
- return yScale.getPixelForValue(sumPos + value);
- }
- }
-
- return yScale.getPixelForValue(value);
- },
-
- draw: function(ease) {
- var me = this;
- var easingDecimal = ease || 1;
- helpers.each(me.getMeta().data, function(rectangle, index) {
- var d = me.getDataset().data[index];
- if (d !== null && d !== undefined && !isNaN(d)) {
- rectangle.transition(easingDecimal).draw();
- }
- }, me);
- },
-
- setHoverStyle: function(rectangle) {
- var dataset = this.chart.data.datasets[rectangle._datasetIndex];
- var index = rectangle._index;
-
- var custom = rectangle.custom || {};
- var model = rectangle._model;
- model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
- model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
- model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
- },
-
- removeHoverStyle: function(rectangle) {
- var dataset = this.chart.data.datasets[rectangle._datasetIndex];
- var index = rectangle._index;
- var custom = rectangle.custom || {};
- var model = rectangle._model;
- var rectangleElementOptions = this.chart.options.elements.rectangle;
-
- model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
- model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
- model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
- }
-
- });
-
-
- // including horizontalBar in the bar file, instead of a file of its own
- // it extends bar (like pie extends doughnut)
- Chart.defaults.horizontalBar = {
- hover: {
- mode: "label"
- },
-
- scales: {
- xAxes: [{
- type: "linear",
- position: "bottom"
- }],
- yAxes: [{
- position: "left",
- type: "category",
-
- // Specific to Horizontal Bar Controller
- categoryPercentage: 0.8,
- barPercentage: 0.9,
-
- // grid line settings
- gridLines: {
- offsetGridLines: true
- }
- }]
- },
- elements: {
- rectangle: {
- borderSkipped: 'left'
- }
- },
- tooltips: {
- callbacks: {
- title: function(tooltipItems, data) {
- // Pick first xLabel for now
- var title = '';
-
- if (tooltipItems.length > 0) {
- if (tooltipItems[0].yLabel) {
- title = tooltipItems[0].yLabel;
- } else if (data.labels.length > 0 && tooltipItems[0].index < data.labels.length) {
- title = data.labels[tooltipItems[0].index];
- }
- }
-
- return title;
- },
- label: function(tooltipItem, data) {
- var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
- return datasetLabel + ': ' + tooltipItem.xLabel;
- }
- }
- }
- };
-
- Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
- updateElement: function(rectangle, index, reset) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var yScale = me.getScaleForId(meta.yAxisID);
- var scaleBase = xScale.getBasePixel();
- var custom = rectangle.custom || {};
- var dataset = me.getDataset();
- var rectangleElementOptions = me.chart.options.elements.rectangle;
-
- helpers.extend(rectangle, {
- // Utility
- _xScale: xScale,
- _yScale: yScale,
- _datasetIndex: me.index,
- _index: index,
-
- // Desired view properties
- _model: {
- x: reset ? scaleBase : me.calculateBarX(index, me.index),
- y: me.calculateBarY(index, me.index),
-
- // Tooltip
- label: me.chart.data.labels[index],
- datasetLabel: dataset.label,
-
- // Appearance
- base: reset ? scaleBase : me.calculateBarBase(me.index, index),
- height: me.calculateBarHeight(index),
- backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
- borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
- borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
- borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth)
- },
-
- draw: function () {
- var ctx = this._chart.ctx;
- var vm = this._view;
-
- var halfHeight = vm.height / 2,
- topY = vm.y - halfHeight,
- bottomY = vm.y + halfHeight,
- right = vm.base - (vm.base - vm.x),
- halfStroke = vm.borderWidth / 2;
-
- // Canvas doesn't allow us to stroke inside the width so we can
- // adjust the sizes to fit if we're setting a stroke on the line
- if (vm.borderWidth) {
- topY += halfStroke;
- bottomY -= halfStroke;
- right += halfStroke;
- }
-
- ctx.beginPath();
-
- ctx.fillStyle = vm.backgroundColor;
- ctx.strokeStyle = vm.borderColor;
- ctx.lineWidth = vm.borderWidth;
-
- // Corner points, from bottom-left to bottom-right clockwise
- // | 1 2 |
- // | 0 3 |
- var corners = [
- [vm.base, bottomY],
- [vm.base, topY],
- [right, topY],
- [right, bottomY]
- ];
-
- // Find first (starting) corner with fallback to 'bottom'
- var borders = ['bottom', 'left', 'top', 'right'];
- var startCorner = borders.indexOf(vm.borderSkipped, 0);
- if (startCorner === -1)
- startCorner = 0;
-
- function cornerAt(index) {
- return corners[(startCorner + index) % 4];
- }
-
- // Draw rectangle from 'startCorner'
- ctx.moveTo.apply(ctx, cornerAt(0));
- for (var i = 1; i < 4; i++)
- ctx.lineTo.apply(ctx, cornerAt(i));
-
- ctx.fill();
- if (vm.borderWidth) {
- ctx.stroke();
- }
- },
-
- inRange: function (mouseX, mouseY) {
- var vm = this._view;
- var inRange = false;
-
- if (vm) {
- if (vm.x < vm.base) {
- inRange = (mouseY >= vm.y - vm.height / 2 && mouseY <= vm.y + vm.height / 2) && (mouseX >= vm.x && mouseX <= vm.base);
- } else {
- inRange = (mouseY >= vm.y - vm.height / 2 && mouseY <= vm.y + vm.height / 2) && (mouseX >= vm.base && mouseX <= vm.x);
- }
- }
-
- return inRange;
- }
- });
-
- rectangle.pivot();
- },
-
- calculateBarBase: function (datasetIndex, index) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var base = 0;
-
- if (xScale.options.stacked) {
- var chart = me.chart;
- var datasets = chart.data.datasets;
- var value = Number(datasets[datasetIndex].data[index]);
-
- for (var i = 0; i < datasetIndex; i++) {
- var currentDs = datasets[i];
- var currentDsMeta = chart.getDatasetMeta(i);
- if (currentDsMeta.bar && currentDsMeta.xAxisID === xScale.id && chart.isDatasetVisible(i)) {
- var currentVal = Number(currentDs.data[index]);
- base += value < 0 ? Math.min(currentVal, 0) : Math.max(currentVal, 0);
- }
- }
-
- return xScale.getPixelForValue(base);
- }
+ return {
+ size: size,
+ base: base,
+ head: base + size,
+ center: base + size / 2
+ };
+ },
- return xScale.getBasePixel();
- },
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var elements = me.getMeta().data;
+ var dataset = me.getDataset();
+ var ilen = elements.length;
+ var i = 0;
+ var d;
- getRuler: function (index) {
- var me = this;
- var meta = me.getMeta();
- var yScale = me.getScaleForId(meta.yAxisID);
- var datasetCount = me.getBarCount();
+ helpers.canvas.clipArea(chart.ctx, chart.chartArea);
- var tickHeight;
- if (yScale.options.type === 'category') {
- tickHeight = yScale.getPixelForTick(index + 1) - yScale.getPixelForTick(index);
- } else {
- // Average width
- tickHeight = yScale.width / yScale.ticks.length;
- }
- var categoryHeight = tickHeight * yScale.options.categoryPercentage;
- var categorySpacing = (tickHeight - (tickHeight * yScale.options.categoryPercentage)) / 2;
- var fullBarHeight = categoryHeight / datasetCount;
+ for (; i<ilen; ++i) {
+ d = dataset.data[i];
+ if (d !== null && d !== undefined && !isNaN(d)) {
+ elements[i].draw();
+ }
+ }
- if (yScale.ticks.length !== me.chart.data.labels.length) {
- var perc = yScale.ticks.length / me.chart.data.labels.length;
- fullBarHeight = fullBarHeight * perc;
- }
+ helpers.canvas.unclipArea(chart.ctx);
+ },
- var barHeight = fullBarHeight * yScale.options.barPercentage;
- var barSpacing = fullBarHeight - (fullBarHeight * yScale.options.barPercentage);
+ setHoverStyle: function(rectangle) {
+ var dataset = this.chart.data.datasets[rectangle._datasetIndex];
+ var index = rectangle._index;
+ var custom = rectangle.custom || {};
+ var model = rectangle._model;
- return {
- datasetCount: datasetCount,
- tickHeight: tickHeight,
- categoryHeight: categoryHeight,
- categorySpacing: categorySpacing,
- fullBarHeight: fullBarHeight,
- barHeight: barHeight,
- barSpacing: barSpacing,
- };
- },
+ model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
+ model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
+ model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
+ },
- calculateBarHeight: function (index) {
- var me = this;
- var yScale = me.getScaleForId(me.getMeta().yAxisID);
- if (yScale.options.barThickness) {
- return yScale.options.barThickness;
- }
- var ruler = me.getRuler(index);
- return yScale.options.stacked ? ruler.categoryHeight : ruler.barHeight;
- },
+ removeHoverStyle: function(rectangle) {
+ var dataset = this.chart.data.datasets[rectangle._datasetIndex];
+ var index = rectangle._index;
+ var custom = rectangle.custom || {};
+ var model = rectangle._model;
+ var rectangleElementOptions = this.chart.options.elements.rectangle;
- calculateBarX: function (index, datasetIndex) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var value = Number(me.getDataset().data[index]);
+ model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
+ model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
+ model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
+ }
+ });
- if (xScale.options.stacked) {
- var sumPos = 0,
- sumNeg = 0;
+ // including horizontalBar in the bar file, instead of a file of its own
+ // it extends bar (like pie extends doughnut)
+ Chart.defaults.horizontalBar = {
+ hover: {
+ mode: 'label'
+ },
- for (var i = 0; i < datasetIndex; i++) {
- var ds = me.chart.data.datasets[i];
- var dsMeta = me.chart.getDatasetMeta(i);
- if (dsMeta.bar && dsMeta.xAxisID === xScale.id && me.chart.isDatasetVisible(i)) {
- var stackedVal = Number(ds.data[index]);
- if (stackedVal < 0) {
- sumNeg += stackedVal || 0;
- } else {
- sumPos += stackedVal || 0;
- }
- }
- }
+ scales: {
+ xAxes: [{
+ type: 'linear',
+ position: 'bottom'
+ }],
+ yAxes: [{
+ position: 'left',
+ type: 'category',
- if (value < 0) {
- return xScale.getPixelForValue(sumNeg + value);
- } else {
- return xScale.getPixelForValue(sumPos + value);
- }
- }
+ // Specific to Horizontal Bar Controller
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
- return xScale.getPixelForValue(value);
- },
+ // grid line settings
+ gridLines: {
+ offsetGridLines: true
+ }
+ }]
+ },
+ elements: {
+ rectangle: {
+ borderSkipped: 'left'
+ }
+ },
+ tooltips: {
+ callbacks: {
+ title: function(tooltipItems, data) {
+ // Pick first xLabel for now
+ var title = '';
- calculateBarY: function (index, datasetIndex) {
- var me = this;
- var meta = me.getMeta();
- var yScale = me.getScaleForId(meta.yAxisID);
- var barIndex = me.getBarIndex(datasetIndex);
+ if (tooltipItems.length > 0) {
+ if (tooltipItems[0].yLabel) {
+ title = tooltipItems[0].yLabel;
+ } else if (data.labels.length > 0 && tooltipItems[0].index < data.labels.length) {
+ title = data.labels[tooltipItems[0].index];
+ }
+ }
- var ruler = me.getRuler(index);
- var topTick = yScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
- topTick -= me.chart.isCombo ? (ruler.tickHeight / 2) : 0;
+ return title;
+ },
+ label: function(tooltipItem, data) {
+ var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
+ return datasetLabel + ': ' + tooltipItem.xLabel;
+ }
+ }
+ }
+ };
- if (yScale.options.stacked) {
- return topTick + (ruler.categoryHeight / 2) + ruler.categorySpacing;
- }
+ Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
+ /**
+ * @private
+ */
+ getValueScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
- return topTick +
- (ruler.barHeight / 2) +
- ruler.categorySpacing +
- (ruler.barHeight * barIndex) +
- (ruler.barSpacing / 2) +
- (ruler.barSpacing * barIndex);
- }
- });
-};
+ /**
+ * @private
+ */
+ getIndexScaleId: function() {
+ return this.getMeta().yAxisID;
+ }
+ });
+ };
},{}],16:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.bubble = {
- hover: {
- mode: "single"
- },
+ Chart.defaults.bubble = {
+ hover: {
+ mode: 'single'
+ },
- scales: {
- xAxes: [{
- type: "linear", // bubble should probably use a linear scale by default
- position: "bottom",
- id: "x-axis-0" // need an ID so datasets can reference the scale
- }],
- yAxes: [{
- type: "linear",
- position: "left",
- id: "y-axis-0"
- }]
- },
+ scales: {
+ xAxes: [{
+ type: 'linear', // bubble should probably use a linear scale by default
+ position: 'bottom',
+ id: 'x-axis-0' // need an ID so datasets can reference the scale
+ }],
+ yAxes: [{
+ type: 'linear',
+ position: 'left',
+ id: 'y-axis-0'
+ }]
+ },
- tooltips: {
- callbacks: {
- title: function() {
- // Title doesn't make sense for scatter since we format the data as a point
- return '';
- },
- label: function(tooltipItem, data) {
- var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
- var dataPoint = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
- return datasetLabel + ': (' + dataPoint.x + ', ' + dataPoint.y + ', ' + dataPoint.r + ')';
- }
- }
- }
- };
+ tooltips: {
+ callbacks: {
+ title: function() {
+ // Title doesn't make sense for scatter since we format the data as a point
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
+ var dataPoint = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
+ return datasetLabel + ': (' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ', ' + dataPoint.r + ')';
+ }
+ }
+ }
+ };
- Chart.controllers.bubble = Chart.DatasetController.extend({
+ Chart.controllers.bubble = Chart.DatasetController.extend({
- dataElementType: Chart.elements.Point,
+ dataElementType: Chart.elements.Point,
- update: function(reset) {
- var me = this;
- var meta = me.getMeta();
- var points = meta.data;
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var points = meta.data;
- // Update Points
- helpers.each(points, function(point, index) {
- me.updateElement(point, index, reset);
- });
- },
+ // Update Points
+ helpers.each(points, function(point, index) {
+ me.updateElement(point, index, reset);
+ });
+ },
- updateElement: function(point, index, reset) {
- var me = this;
- var meta = me.getMeta();
- var xScale = me.getScaleForId(meta.xAxisID);
- var yScale = me.getScaleForId(meta.yAxisID);
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
- var custom = point.custom || {};
- var dataset = me.getDataset();
- var data = dataset.data[index];
- var pointElementOptions = me.chart.options.elements.point;
- var dsIndex = me.index;
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var data = dataset.data[index];
+ var pointElementOptions = me.chart.options.elements.point;
+ var dsIndex = me.index;
- helpers.extend(point, {
- // Utility
- _xScale: xScale,
- _yScale: yScale,
- _datasetIndex: dsIndex,
- _index: index,
+ helpers.extend(point, {
+ // Utility
+ _xScale: xScale,
+ _yScale: yScale,
+ _datasetIndex: dsIndex,
+ _index: index,
- // Desired view properties
- _model: {
- x: reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex, me.chart.isCombo),
- y: reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex),
- // Appearance
- radius: reset ? 0 : custom.radius ? custom.radius : me.getRadius(data),
+ // Desired view properties
+ _model: {
+ x: reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex, me.chart.isCombo),
+ y: reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex),
+ // Appearance
+ radius: reset ? 0 : custom.radius ? custom.radius : me.getRadius(data),
- // Tooltip
- hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.hitRadius, index, pointElementOptions.hitRadius)
- }
- });
+ // Tooltip
+ hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.hitRadius, index, pointElementOptions.hitRadius)
+ }
+ });
- // Trick to reset the styles of the point
- Chart.DatasetController.prototype.removeHoverStyle.call(me, point, pointElementOptions);
+ // Trick to reset the styles of the point
+ Chart.DatasetController.prototype.removeHoverStyle.call(me, point, pointElementOptions);
- var model = point._model;
- model.skip = custom.skip ? custom.skip : (isNaN(model.x) || isNaN(model.y));
+ var model = point._model;
+ model.skip = custom.skip ? custom.skip : (isNaN(model.x) || isNaN(model.y));
- point.pivot();
- },
+ point.pivot();
+ },
- getRadius: function(value) {
- return value.r || this.chart.options.elements.point.radius;
- },
+ getRadius: function(value) {
+ return value.r || this.chart.options.elements.point.radius;
+ },
- setHoverStyle: function(point) {
- var me = this;
- Chart.DatasetController.prototype.setHoverStyle.call(me, point);
+ setHoverStyle: function(point) {
+ var me = this;
+ Chart.DatasetController.prototype.setHoverStyle.call(me, point);
- // Radius
- var dataset = me.chart.data.datasets[point._datasetIndex];
- var index = point._index;
- var custom = point.custom || {};
- var model = point._model;
- model.radius = custom.hoverRadius ? custom.hoverRadius : (helpers.getValueAtIndexOrDefault(dataset.hoverRadius, index, me.chart.options.elements.point.hoverRadius)) + me.getRadius(dataset.data[index]);
- },
+ // Radius
+ var dataset = me.chart.data.datasets[point._datasetIndex];
+ var index = point._index;
+ var custom = point.custom || {};
+ var model = point._model;
+ model.radius = custom.hoverRadius ? custom.hoverRadius : (helpers.getValueAtIndexOrDefault(dataset.hoverRadius, index, me.chart.options.elements.point.hoverRadius)) + me.getRadius(dataset.data[index]);
+ },
- removeHoverStyle: function(point) {
- var me = this;
- Chart.DatasetController.prototype.removeHoverStyle.call(me, point, me.chart.options.elements.point);
+ removeHoverStyle: function(point) {
+ var me = this;
+ Chart.DatasetController.prototype.removeHoverStyle.call(me, point, me.chart.options.elements.point);
- var dataVal = me.chart.data.datasets[point._datasetIndex].data[point._index];
- var custom = point.custom || {};
- var model = point._model;
+ var dataVal = me.chart.data.datasets[point._datasetIndex].data[point._index];
+ var custom = point.custom || {};
+ var model = point._model;
- model.radius = custom.radius ? custom.radius : me.getRadius(dataVal);
- }
- });
-};
+ model.radius = custom.radius ? custom.radius : me.getRadius(dataVal);
+ }
+ });
+ };
},{}],17:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers,
- defaults = Chart.defaults;
+ var helpers = Chart.helpers,
+ defaults = Chart.defaults;
- defaults.doughnut = {
- animation: {
- //Boolean - Whether we animate the rotation of the Doughnut
- animateRotate: true,
- //Boolean - Whether we animate scaling the Doughnut from the centre
- animateScale: false
- },
- aspectRatio: 1,
- hover: {
- mode: 'single'
- },
- legendCallback: function(chart) {
- var text = [];
- text.push('<ul class="' + chart.id + '-legend">');
+ defaults.doughnut = {
+ animation: {
+ // Boolean - Whether we animate the rotation of the Doughnut
+ animateRotate: true,
+ // Boolean - Whether we animate scaling the Doughnut from the centre
+ animateScale: false
+ },
+ aspectRatio: 1,
+ hover: {
+ mode: 'single'
+ },
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
- var data = chart.data;
- var datasets = data.datasets;
- var labels = data.labels;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
- if (datasets.length) {
- for (var i = 0; i < datasets[0].data.length; ++i) {
- text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
- if (labels[i]) {
- text.push(labels[i]);
- }
- text.push('</li>');
- }
- }
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
- text.push('</ul>');
- return text.join("");
- },
- legend: {
- labels: {
- generateLabels: function(chart) {
- var data = chart.data;
- if (data.labels.length && data.datasets.length) {
- return data.labels.map(function(label, i) {
- var meta = chart.getDatasetMeta(0);
- var ds = data.datasets[0];
- var arc = meta.data[i];
- var custom = arc && arc.custom || {};
- var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
- var arcOpts = chart.options.elements.arc;
- var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
- var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
- var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc && arc.custom || {};
+ var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
+ var arcOpts = chart.options.elements.arc;
+ var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
+ var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
+ var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
- return {
- text: label,
- fillStyle: fill,
- strokeStyle: stroke,
- lineWidth: bw,
- hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
- // Extra data used for toggling the correct item
- index: i
- };
- });
- } else {
- return [];
- }
- }
- },
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
- onClick: function(e, legendItem) {
- var index = legendItem.index;
- var chart = this.chart;
- var i, ilen, meta;
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
- for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
- meta = chart.getDatasetMeta(i);
- meta.data[index].hidden = !meta.data[index].hidden;
- }
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ // toggle visibility of index if exists
+ if (meta.data[index]) {
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+ }
- chart.update();
- }
- },
+ chart.update();
+ }
+ },
- //The percentage of the chart that we cut out of the middle.
- cutoutPercentage: 50,
+ // The percentage of the chart that we cut out of the middle.
+ cutoutPercentage: 50,
- //The rotation of the chart, where the first data arc begins.
- rotation: Math.PI * -0.5,
+ // The rotation of the chart, where the first data arc begins.
+ rotation: Math.PI * -0.5,
- //The total circumference of the chart.
- circumference: Math.PI * 2.0,
+ // The total circumference of the chart.
+ circumference: Math.PI * 2.0,
- // Need to override these to give a nice default
- tooltips: {
- callbacks: {
- title: function() {
- return '';
- },
- label: function(tooltipItem, data) {
- return data.labels[tooltipItem.index] + ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
- }
- }
- }
- };
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ var dataLabel = data.labels[tooltipItem.index];
+ var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
- defaults.pie = helpers.clone(defaults.doughnut);
- helpers.extend(defaults.pie, {
- cutoutPercentage: 0
- });
+ if (helpers.isArray(dataLabel)) {
+ // show value on first line of multiline label
+ // need to clone because we are changing the value
+ dataLabel = dataLabel.slice();
+ dataLabel[0] += value;
+ } else {
+ dataLabel += value;
+ }
-
- Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
-
- dataElementType: Chart.elements.Arc,
-
- linkScales: helpers.noop,
-
- // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
- getRingIndex: function(datasetIndex) {
- var ringIndex = 0;
-
- for (var j = 0; j < datasetIndex; ++j) {
- if (this.chart.isDatasetVisible(j)) {
- ++ringIndex;
- }
- }
-
- return ringIndex;
- },
-
- update: function(reset) {
- var me = this;
- var chart = me.chart,
- chartArea = chart.chartArea,
- opts = chart.options,
- arcOpts = opts.elements.arc,
- availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth,
- availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth,
- minSize = Math.min(availableWidth, availableHeight),
- offset = {
- x: 0,
- y: 0
- },
- meta = me.getMeta(),
- cutoutPercentage = opts.cutoutPercentage,
- circumference = opts.circumference;
-
- // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
- if (circumference < Math.PI * 2.0) {
- var startAngle = opts.rotation % (Math.PI * 2.0);
- startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
- var endAngle = startAngle + circumference;
- var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
- var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
- var contains0 = (startAngle <= 0 && 0 <= endAngle) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
- var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
- var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
- var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
- var cutout = cutoutPercentage / 100.0;
- var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
- var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
- var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
- minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
- offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
- }
- chart.borderWidth = me.getMaxBorderWidth(meta.data);
-
- chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
- chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 1, 0);
- chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
- chart.offsetX = offset.x * chart.outerRadius;
- chart.offsetY = offset.y * chart.outerRadius;
-
- meta.total = me.calculateTotal();
-
- me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
- me.innerRadius = me.outerRadius - chart.radiusLength;
-
- helpers.each(meta.data, function(arc, index) {
- me.updateElement(arc, index, reset);
- });
- },
-
- updateElement: function(arc, index, reset) {
- var me = this;
- var chart = me.chart,
- chartArea = chart.chartArea,
- opts = chart.options,
- animationOpts = opts.animation,
- centerX = (chartArea.left + chartArea.right) / 2,
- centerY = (chartArea.top + chartArea.bottom) / 2,
- startAngle = opts.rotation, // non reset case handled later
- endAngle = opts.rotation, // non reset case handled later
- dataset = me.getDataset(),
- circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)),
- innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius,
- outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius,
- valueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
-
- helpers.extend(arc, {
- // Utility
- _datasetIndex: me.index,
- _index: index,
-
- // Desired view properties
- _model: {
- x: centerX + chart.offsetX,
- y: centerY + chart.offsetY,
- startAngle: startAngle,
- endAngle: endAngle,
- circumference: circumference,
- outerRadius: outerRadius,
- innerRadius: innerRadius,
- label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
- }
- });
-
- var model = arc._model;
- // Resets the visual styles
- this.removeHoverStyle(arc);
-
- // Set correct angles if not resetting
- if (!reset || !animationOpts.animateRotate) {
- if (index === 0) {
- model.startAngle = opts.rotation;
- } else {
- model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
- }
-
- model.endAngle = model.startAngle + model.circumference;
- }
-
- arc.pivot();
- },
-
- removeHoverStyle: function(arc) {
- Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
- },
-
- calculateTotal: function() {
- var dataset = this.getDataset();
- var meta = this.getMeta();
- var total = 0;
- var value;
-
- helpers.each(meta.data, function(element, index) {
- value = dataset.data[index];
- if (!isNaN(value) && !element.hidden) {
- total += Math.abs(value);
- }
- });
-
- /*if (total === 0) {
- total = NaN;
- }*/
-
- return total;
- },
-
- calculateCircumference: function(value) {
- var total = this.getMeta().total;
- if (total > 0 && !isNaN(value)) {
- return (Math.PI * 2.0) * (value / total);
- } else {
- return 0;
- }
- },
-
- //gets the max border or hover width to properly scale pie charts
- getMaxBorderWidth: function (elements) {
- var max = 0,
- index = this.index,
- length = elements.length,
- borderWidth,
- hoverWidth;
-
- for (var i = 0; i < length; i++) {
- borderWidth = elements[i]._model ? elements[i]._model.borderWidth : 0;
- hoverWidth = elements[i]._chart ? elements[i]._chart.config.data.datasets[index].hoverBorderWidth : 0;
-
- max = borderWidth > max ? borderWidth : max;
- max = hoverWidth > max ? hoverWidth : max;
+ return dataLabel;
+ }
+ }
}
- return max;
- }
- });
-};
+ };
+
+ defaults.pie = helpers.clone(defaults.doughnut);
+ helpers.extend(defaults.pie, {
+ cutoutPercentage: 0
+ });
+
+
+ Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
+
+ dataElementType: Chart.elements.Arc,
+
+ linkScales: helpers.noop,
+
+ // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
+ getRingIndex: function(datasetIndex) {
+ var ringIndex = 0;
+
+ for (var j = 0; j < datasetIndex; ++j) {
+ if (this.chart.isDatasetVisible(j)) {
+ ++ringIndex;
+ }
+ }
+
+ return ringIndex;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var chart = me.chart,
+ chartArea = chart.chartArea,
+ opts = chart.options,
+ arcOpts = opts.elements.arc,
+ availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth,
+ availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth,
+ minSize = Math.min(availableWidth, availableHeight),
+ offset = {
+ x: 0,
+ y: 0
+ },
+ meta = me.getMeta(),
+ cutoutPercentage = opts.cutoutPercentage,
+ circumference = opts.circumference;
+
+ // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
+ if (circumference < Math.PI * 2.0) {
+ var startAngle = opts.rotation % (Math.PI * 2.0);
+ startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
+ var endAngle = startAngle + circumference;
+ var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
+ var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
+ var contains0 = (startAngle <= 0 && 0 <= endAngle) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
+ var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
+ var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
+ var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
+ var cutout = cutoutPercentage / 100.0;
+ var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
+ var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
+ var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
+ minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
+ offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
+ }
+
+ chart.borderWidth = me.getMaxBorderWidth(meta.data);
+ chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
+ chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
+ chart.offsetX = offset.x * chart.outerRadius;
+ chart.offsetY = offset.y * chart.outerRadius;
+
+ meta.total = me.calculateTotal();
+
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
+ me.innerRadius = Math.max(me.outerRadius - chart.radiusLength, 0);
+
+ helpers.each(meta.data, function(arc, index) {
+ me.updateElement(arc, index, reset);
+ });
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart,
+ chartArea = chart.chartArea,
+ opts = chart.options,
+ animationOpts = opts.animation,
+ centerX = (chartArea.left + chartArea.right) / 2,
+ centerY = (chartArea.top + chartArea.bottom) / 2,
+ startAngle = opts.rotation, // non reset case handled later
+ endAngle = opts.rotation, // non reset case handled later
+ dataset = me.getDataset(),
+ circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)),
+ innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius,
+ outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius,
+ valueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
+
+ helpers.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+
+ // Desired view properties
+ _model: {
+ x: centerX + chart.offsetX,
+ y: centerY + chart.offsetY,
+ startAngle: startAngle,
+ endAngle: endAngle,
+ circumference: circumference,
+ outerRadius: outerRadius,
+ innerRadius: innerRadius,
+ label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
+ }
+ });
+
+ var model = arc._model;
+ // Resets the visual styles
+ this.removeHoverStyle(arc);
+
+ // Set correct angles if not resetting
+ if (!reset || !animationOpts.animateRotate) {
+ if (index === 0) {
+ model.startAngle = opts.rotation;
+ } else {
+ model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
+ }
+
+ model.endAngle = model.startAngle + model.circumference;
+ }
+
+ arc.pivot();
+ },
+
+ removeHoverStyle: function(arc) {
+ Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
+ },
+
+ calculateTotal: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var total = 0;
+ var value;
+
+ helpers.each(meta.data, function(element, index) {
+ value = dataset.data[index];
+ if (!isNaN(value) && !element.hidden) {
+ total += Math.abs(value);
+ }
+ });
+
+ /* if (total === 0) {
+ total = NaN;
+ }*/
+
+ return total;
+ },
+
+ calculateCircumference: function(value) {
+ var total = this.getMeta().total;
+ if (total > 0 && !isNaN(value)) {
+ return (Math.PI * 2.0) * (value / total);
+ }
+ return 0;
+ },
+
+ // gets the max border or hover width to properly scale pie charts
+ getMaxBorderWidth: function(elements) {
+ var max = 0,
+ index = this.index,
+ length = elements.length,
+ borderWidth,
+ hoverWidth;
+
+ for (var i = 0; i < length; i++) {
+ borderWidth = elements[i]._model ? elements[i]._model.borderWidth : 0;
+ hoverWidth = elements[i]._chart ? elements[i]._chart.config.data.datasets[index].hoverBorderWidth : 0;
+
+ max = borderWidth > max ? borderWidth : max;
+ max = hoverWidth > max ? hoverWidth : max;
+ }
+ return max;
+ }
+ });
+ };
},{}],18:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.line = {
- showLines: true,
- spanGaps: false,
+ Chart.defaults.line = {
+ showLines: true,
+ spanGaps: false,
- hover: {
- mode: "label"
- },
+ hover: {
+ mode: 'label'
+ },
- scales: {
- xAxes: [{
- type: "category",
- id: 'x-axis-0'
- }],
- yAxes: [{
- type: "linear",
- id: 'y-axis-0'
- }]
- }
- };
+ scales: {
+ xAxes: [{
+ type: 'category',
+ id: 'x-axis-0'
+ }],
+ yAxes: [{
+ type: 'linear',
+ id: 'y-axis-0'
+ }]
+ }
+ };
- function lineEnabled(dataset, options) {
- return helpers.getValueOrDefault(dataset.showLine, options.showLines);
- }
+ function lineEnabled(dataset, options) {
+ return helpers.getValueOrDefault(dataset.showLine, options.showLines);
+ }
- Chart.controllers.line = Chart.DatasetController.extend({
+ Chart.controllers.line = Chart.DatasetController.extend({
- datasetElementType: Chart.elements.Line,
+ datasetElementType: Chart.elements.Line,
- dataElementType: Chart.elements.Point,
+ dataElementType: Chart.elements.Point,
- addElementAndReset: function(index) {
- var me = this;
- var options = me.chart.options;
- var meta = me.getMeta();
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var options = me.chart.options;
+ var lineElementOptions = options.elements.line;
+ var scale = me.getScaleForId(meta.yAxisID);
+ var i, ilen, custom;
+ var dataset = me.getDataset();
+ var showLine = lineEnabled(dataset, options);
- Chart.DatasetController.prototype.addElementAndReset.call(me, index);
+ // Update Line
+ if (showLine) {
+ custom = line.custom || {};
- // Make sure bezier control points are updated
- if (lineEnabled(me.getDataset(), options) && meta.dataset._model.tension !== 0) {
- me.updateBezierControlPoints();
- }
- },
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
- update: function(reset) {
- var me = this;
- var meta = me.getMeta();
- var line = meta.dataset;
- var points = meta.data || [];
- var options = me.chart.options;
- var lineElementOptions = options.elements.line;
- var scale = me.getScaleForId(meta.yAxisID);
- var i, ilen, custom;
- var dataset = me.getDataset();
- var showLine = lineEnabled(dataset, options);
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ // Model
+ line._model = {
+ // Appearance
+ // The default behavior of lines is to break at null values, according
+ // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
+ // This option gives lines the ability to span gaps
+ spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps,
+ tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
+ backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
+ borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
+ borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
+ borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
+ borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
+ borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
+ borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
+ fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
+ steppedLine: custom.steppedLine ? custom.steppedLine : helpers.getValueOrDefault(dataset.steppedLine, lineElementOptions.stepped),
+ cubicInterpolationMode: custom.cubicInterpolationMode ? custom.cubicInterpolationMode : helpers.getValueOrDefault(dataset.cubicInterpolationMode, lineElementOptions.cubicInterpolationMode),
+ };
- // Update Line
- if (showLine) {
- custom = line.custom || {};
+ line.pivot();
+ }
- // Compatibility: If the properties are defined with only the old name, use those values
- if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
- dataset.lineTension = dataset.tension;
- }
+ // Update Points
+ for (i=0, ilen=points.length; i<ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
- // Utility
- line._scale = scale;
- line._datasetIndex = me.index;
- // Data
- line._children = points;
- // Model
- line._model = {
- // Appearance
- // The default behavior of lines is to break at null values, according
- // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
- // This option gives linse the ability to span gaps
- spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps,
- tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
- backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
- borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
- borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
- borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
- borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
- borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
- borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
- fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
- steppedLine: custom.steppedLine ? custom.steppedLine : helpers.getValueOrDefault(dataset.steppedLine, lineElementOptions.stepped),
- // Scale
- scaleTop: scale.top,
- scaleBottom: scale.bottom,
- scaleZero: scale.getBasePixel()
- };
+ if (showLine && line._model.tension !== 0) {
+ me.updateBezierControlPoints();
+ }
- line.pivot();
- }
+ // Now pivot the point for animation
+ for (i=0, ilen=points.length; i<ilen; ++i) {
+ points[i].pivot();
+ }
+ },
- // Update Points
- for (i=0, ilen=points.length; i<ilen; ++i) {
- me.updateElement(points[i], i, reset);
- }
+ getPointBackgroundColor: function(point, index) {
+ var backgroundColor = this.chart.options.elements.point.backgroundColor;
+ var dataset = this.getDataset();
+ var custom = point.custom || {};
- if (showLine && line._model.tension !== 0) {
- me.updateBezierControlPoints();
- }
+ if (custom.backgroundColor) {
+ backgroundColor = custom.backgroundColor;
+ } else if (dataset.pointBackgroundColor) {
+ backgroundColor = helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor);
+ } else if (dataset.backgroundColor) {
+ backgroundColor = dataset.backgroundColor;
+ }
- // Now pivot the point for animation
- for (i=0, ilen=points.length; i<ilen; ++i) {
- points[i].pivot();
- }
- },
+ return backgroundColor;
+ },
- getPointBackgroundColor: function(point, index) {
- var backgroundColor = this.chart.options.elements.point.backgroundColor;
- var dataset = this.getDataset();
- var custom = point.custom || {};
+ getPointBorderColor: function(point, index) {
+ var borderColor = this.chart.options.elements.point.borderColor;
+ var dataset = this.getDataset();
+ var custom = point.custom || {};
- if (custom.backgroundColor) {
- backgroundColor = custom.backgroundColor;
- } else if (dataset.pointBackgroundColor) {
- backgroundColor = helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor);
- } else if (dataset.backgroundColor) {
- backgroundColor = dataset.backgroundColor;
- }
+ if (custom.borderColor) {
+ borderColor = custom.borderColor;
+ } else if (dataset.pointBorderColor) {
+ borderColor = helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor);
+ } else if (dataset.borderColor) {
+ borderColor = dataset.borderColor;
+ }
- return backgroundColor;
- },
+ return borderColor;
+ },
- getPointBorderColor: function(point, index) {
- var borderColor = this.chart.options.elements.point.borderColor;
- var dataset = this.getDataset();
- var custom = point.custom || {};
+ getPointBorderWidth: function(point, index) {
+ var borderWidth = this.chart.options.elements.point.borderWidth;
+ var dataset = this.getDataset();
+ var custom = point.custom || {};
- if (custom.borderColor) {
- borderColor = custom.borderColor;
- } else if (dataset.pointBorderColor) {
- borderColor = helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor);
- } else if (dataset.borderColor) {
- borderColor = dataset.borderColor;
- }
+ if (!isNaN(custom.borderWidth)) {
+ borderWidth = custom.borderWidth;
+ } else if (!isNaN(dataset.pointBorderWidth)) {
+ borderWidth = helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
+ } else if (!isNaN(dataset.borderWidth)) {
+ borderWidth = dataset.borderWidth;
+ }
- return borderColor;
- },
+ return borderWidth;
+ },
- getPointBorderWidth: function(point, index) {
- var borderWidth = this.chart.options.elements.point.borderWidth;
- var dataset = this.getDataset();
- var custom = point.custom || {};
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var datasetIndex = me.index;
+ var value = dataset.data[index];
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var pointOptions = me.chart.options.elements.point;
+ var x, y;
+ var labels = me.chart.data.labels || [];
+ var includeOffset = (labels.length === 1 || dataset.data.length === 1) || me.chart.isCombo;
- if (custom.borderWidth) {
- borderWidth = custom.borderWidth;
- } else if (dataset.pointBorderWidth) {
- borderWidth = helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
- } else if (dataset.borderWidth) {
- borderWidth = dataset.borderWidth;
- }
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
+ dataset.pointRadius = dataset.radius;
+ }
+ if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
+ dataset.pointHitRadius = dataset.hitRadius;
+ }
- return borderWidth;
- },
+ x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex, includeOffset);
+ y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
- updateElement: function(point, index, reset) {
- var me = this;
- var meta = me.getMeta();
- var custom = point.custom || {};
- var dataset = me.getDataset();
- var datasetIndex = me.index;
- var value = dataset.data[index];
- var yScale = me.getScaleForId(meta.yAxisID);
- var xScale = me.getScaleForId(meta.xAxisID);
- var pointOptions = me.chart.options.elements.point;
- var x, y;
+ // Utility
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._datasetIndex = datasetIndex;
+ point._index = index;
- // Compatibility: If the properties are defined with only the old name, use those values
- if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
- dataset.pointRadius = dataset.radius;
- }
- if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
- dataset.pointHitRadius = dataset.hitRadius;
- }
+ // Desired view properties
+ point._model = {
+ x: x,
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius),
+ pointStyle: custom.pointStyle || helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle),
+ backgroundColor: me.getPointBackgroundColor(point, index),
+ borderColor: me.getPointBorderColor(point, index),
+ borderWidth: me.getPointBorderWidth(point, index),
+ tension: meta.dataset._model ? meta.dataset._model.tension : 0,
+ steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false,
+ // Tooltip
+ hitRadius: custom.hitRadius || helpers.getValueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius)
+ };
+ },
- x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex, me.chart.isCombo);
- y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
+ calculatePointY: function(value, index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var sumPos = 0;
+ var sumNeg = 0;
+ var i, ds, dsMeta;
- // Utility
- point._xScale = xScale;
- point._yScale = yScale;
- point._datasetIndex = datasetIndex;
- point._index = index;
+ if (yScale.options.stacked) {
+ for (i = 0; i < datasetIndex; i++) {
+ ds = chart.data.datasets[i];
+ dsMeta = chart.getDatasetMeta(i);
+ if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
+ var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
+ if (stackedRightValue < 0) {
+ sumNeg += stackedRightValue || 0;
+ } else {
+ sumPos += stackedRightValue || 0;
+ }
+ }
+ }
- // Desired view properties
- point._model = {
- x: x,
- y: y,
- skip: custom.skip || isNaN(x) || isNaN(y),
- // Appearance
- radius: custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius),
- pointStyle: custom.pointStyle || helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle),
- backgroundColor: me.getPointBackgroundColor(point, index),
- borderColor: me.getPointBorderColor(point, index),
- borderWidth: me.getPointBorderWidth(point, index),
- tension: meta.dataset._model ? meta.dataset._model.tension : 0,
- steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false,
- // Tooltip
- hitRadius: custom.hitRadius || helpers.getValueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius)
- };
- },
+ var rightValue = Number(yScale.getRightValue(value));
+ if (rightValue < 0) {
+ return yScale.getPixelForValue(sumNeg + rightValue);
+ }
+ return yScale.getPixelForValue(sumPos + rightValue);
+ }
- calculatePointY: function(value, index, datasetIndex) {
- var me = this;
- var chart = me.chart;
- var meta = me.getMeta();
- var yScale = me.getScaleForId(meta.yAxisID);
- var sumPos = 0;
- var sumNeg = 0;
- var i, ds, dsMeta;
+ return yScale.getPixelForValue(value);
+ },
- if (yScale.options.stacked) {
- for (i = 0; i < datasetIndex; i++) {
- ds = chart.data.datasets[i];
- dsMeta = chart.getDatasetMeta(i);
- if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
- var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
- if (stackedRightValue < 0) {
- sumNeg += stackedRightValue || 0;
- } else {
- sumPos += stackedRightValue || 0;
- }
- }
- }
+ updateBezierControlPoints: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var area = me.chart.chartArea;
+ var points = (meta.data || []);
+ var i, ilen, point, model, controlPoints;
- var rightValue = Number(yScale.getRightValue(value));
- if (rightValue < 0) {
- return yScale.getPixelForValue(sumNeg + rightValue);
- } else {
- return yScale.getPixelForValue(sumPos + rightValue);
- }
- }
+ // Only consider points that are drawn in case the spanGaps option is used
+ if (meta.dataset._model.spanGaps) {
+ points = points.filter(function(pt) {
+ return !pt._model.skip;
+ });
+ }
- return yScale.getPixelForValue(value);
- },
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
- updateBezierControlPoints: function() {
- var me = this;
- var meta = me.getMeta();
- var area = me.chart.chartArea;
+ if (meta.dataset._model.cubicInterpolationMode === 'monotone') {
+ helpers.splineCurveMonotone(points);
+ } else {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ point = points[i];
+ model = point._model;
+ controlPoints = helpers.splineCurve(
+ helpers.previousItem(points, i)._model,
+ model,
+ helpers.nextItem(points, i)._model,
+ meta.dataset._model.tension
+ );
+ model.controlPointPreviousX = controlPoints.previous.x;
+ model.controlPointPreviousY = controlPoints.previous.y;
+ model.controlPointNextX = controlPoints.next.x;
+ model.controlPointNextY = controlPoints.next.y;
+ }
+ }
- // only consider points that are drawn in case the spanGaps option is ued
- var points = (meta.data || []).filter(function(pt) { return !pt._model.skip; });
- var i, ilen, point, model, controlPoints;
+ if (me.chart.options.elements.line.capBezierPoints) {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
+ model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
+ model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
+ }
+ }
+ },
- var needToCap = me.chart.options.elements.line.capBezierPoints;
- function capIfNecessary(pt, min, max) {
- return needToCap ? Math.max(Math.min(pt, max), min) : pt;
- }
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var points = meta.data || [];
+ var area = chart.chartArea;
+ var ilen = points.length;
+ var i = 0;
- for (i=0, ilen=points.length; i<ilen; ++i) {
- point = points[i];
- model = point._model;
- controlPoints = helpers.splineCurve(
- helpers.previousItem(points, i)._model,
- model,
- helpers.nextItem(points, i)._model,
- meta.dataset._model.tension
- );
+ Chart.canvasHelpers.clipArea(chart.ctx, area);
- model.controlPointPreviousX = capIfNecessary(controlPoints.previous.x, area.left, area.right);
- model.controlPointPreviousY = capIfNecessary(controlPoints.previous.y, area.top, area.bottom);
- model.controlPointNextX = capIfNecessary(controlPoints.next.x, area.left, area.right);
- model.controlPointNextY = capIfNecessary(controlPoints.next.y, area.top, area.bottom);
- }
- },
+ if (lineEnabled(me.getDataset(), chart.options)) {
+ meta.dataset.draw();
+ }
- draw: function(ease) {
- var me = this;
- var meta = me.getMeta();
- var points = meta.data || [];
- var easingDecimal = ease || 1;
- var i, ilen;
+ Chart.canvasHelpers.unclipArea(chart.ctx);
- // Transition Point Locations
- for (i=0, ilen=points.length; i<ilen; ++i) {
- points[i].transition(easingDecimal);
- }
+ // Draw the points
+ for (; i<ilen; ++i) {
+ points[i].draw(area);
+ }
+ },
- // Transition and Draw the line
- if (lineEnabled(me.getDataset(), me.chart.options)) {
- meta.dataset.transition(easingDecimal).draw();
- }
+ setHoverStyle: function(point) {
+ // Point
+ var dataset = this.chart.data.datasets[point._datasetIndex];
+ var index = point._index;
+ var custom = point.custom || {};
+ var model = point._model;
- // Draw the points
- for (i=0, ilen=points.length; i<ilen; ++i) {
- points[i].draw();
- }
- },
+ model.radius = custom.hoverRadius || helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
+ model.backgroundColor = custom.hoverBackgroundColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
+ model.borderColor = custom.hoverBorderColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
+ model.borderWidth = custom.hoverBorderWidth || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
+ },
- setHoverStyle: function(point) {
- // Point
- var dataset = this.chart.data.datasets[point._datasetIndex];
- var index = point._index;
- var custom = point.custom || {};
- var model = point._model;
+ removeHoverStyle: function(point) {
+ var me = this;
+ var dataset = me.chart.data.datasets[point._datasetIndex];
+ var index = point._index;
+ var custom = point.custom || {};
+ var model = point._model;
- model.radius = custom.hoverRadius || helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
- model.backgroundColor = custom.hoverBackgroundColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
- model.borderColor = custom.hoverBorderColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
- model.borderWidth = custom.hoverBorderWidth || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
- },
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
+ dataset.pointRadius = dataset.radius;
+ }
- removeHoverStyle: function(point) {
- var me = this;
- var dataset = me.chart.data.datasets[point._datasetIndex];
- var index = point._index;
- var custom = point.custom || {};
- var model = point._model;
-
- // Compatibility: If the properties are defined with only the old name, use those values
- if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
- dataset.pointRadius = dataset.radius;
- }
-
- model.radius = custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius);
- model.backgroundColor = me.getPointBackgroundColor(point, index);
- model.borderColor = me.getPointBorderColor(point, index);
- model.borderWidth = me.getPointBorderWidth(point, index);
- }
- });
-};
+ model.radius = custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius);
+ model.backgroundColor = me.getPointBackgroundColor(point, index);
+ model.borderColor = me.getPointBorderColor(point, index);
+ model.borderWidth = me.getPointBorderWidth(point, index);
+ }
+ });
+ };
},{}],19:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.polarArea = {
+ Chart.defaults.polarArea = {
- scale: {
- type: "radialLinear",
- lineArc: true, // so that lines are circular
- ticks: {
- beginAtZero: true
- }
- },
+ scale: {
+ type: 'radialLinear',
+ angleLines: {
+ display: false
+ },
+ gridLines: {
+ circular: true
+ },
+ pointLabels: {
+ display: false
+ },
+ ticks: {
+ beginAtZero: true
+ }
+ },
- //Boolean - Whether to animate the rotation of the chart
- animation: {
- animateRotate: true,
- animateScale: true
- },
+ // Boolean - Whether to animate the rotation of the chart
+ animation: {
+ animateRotate: true,
+ animateScale: true
+ },
- startAngle: -0.5 * Math.PI,
- aspectRatio: 1,
- legendCallback: function(chart) {
- var text = [];
- text.push('<ul class="' + chart.id + '-legend">');
+ startAngle: -0.5 * Math.PI,
+ aspectRatio: 1,
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
- var data = chart.data;
- var datasets = data.datasets;
- var labels = data.labels;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
- if (datasets.length) {
- for (var i = 0; i < datasets[0].data.length; ++i) {
- text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '">');
- if (labels[i]) {
- text.push(labels[i]);
- }
- text.push('</span></li>');
- }
- }
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
- text.push('</ul>');
- return text.join("");
- },
- legend: {
- labels: {
- generateLabels: function(chart) {
- var data = chart.data;
- if (data.labels.length && data.datasets.length) {
- return data.labels.map(function(label, i) {
- var meta = chart.getDatasetMeta(0);
- var ds = data.datasets[0];
- var arc = meta.data[i];
- var custom = arc.custom || {};
- var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
- var arcOpts = chart.options.elements.arc;
- var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
- var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
- var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc.custom || {};
+ var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
+ var arcOpts = chart.options.elements.arc;
+ var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
+ var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
+ var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
- return {
- text: label,
- fillStyle: fill,
- strokeStyle: stroke,
- lineWidth: bw,
- hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
- // Extra data used for toggling the correct item
- index: i
- };
- });
- } else {
- return [];
- }
- }
- },
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
- onClick: function(e, legendItem) {
- var index = legendItem.index;
- var chart = this.chart;
- var i, ilen, meta;
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
- for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
- meta = chart.getDatasetMeta(i);
- meta.data[index].hidden = !meta.data[index].hidden;
- }
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
- chart.update();
- }
- },
+ chart.update();
+ }
+ },
- // Need to override these to give a nice default
- tooltips: {
- callbacks: {
- title: function() {
- return '';
- },
- label: function(tooltipItem, data) {
- return data.labels[tooltipItem.index] + ': ' + tooltipItem.yLabel;
- }
- }
- }
- };
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ return data.labels[tooltipItem.index] + ': ' + tooltipItem.yLabel;
+ }
+ }
+ }
+ };
- Chart.controllers.polarArea = Chart.DatasetController.extend({
+ Chart.controllers.polarArea = Chart.DatasetController.extend({
- dataElementType: Chart.elements.Arc,
+ dataElementType: Chart.elements.Arc,
- linkScales: helpers.noop,
+ linkScales: helpers.noop,
- update: function(reset) {
- var me = this;
- var chart = me.chart;
- var chartArea = chart.chartArea;
- var meta = me.getMeta();
- var opts = chart.options;
- var arcOpts = opts.elements.arc;
- var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
- chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0);
- chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
- chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
+ update: function(reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var meta = me.getMeta();
+ var opts = chart.options;
+ var arcOpts = opts.elements.arc;
+ var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
+ chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0);
+ chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
- me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
- me.innerRadius = me.outerRadius - chart.radiusLength;
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
+ me.innerRadius = me.outerRadius - chart.radiusLength;
- meta.count = me.countVisibleElements();
+ meta.count = me.countVisibleElements();
- helpers.each(meta.data, function(arc, index) {
- me.updateElement(arc, index, reset);
- });
- },
+ helpers.each(meta.data, function(arc, index) {
+ me.updateElement(arc, index, reset);
+ });
+ },
- updateElement: function(arc, index, reset) {
- var me = this;
- var chart = me.chart;
- var dataset = me.getDataset();
- var opts = chart.options;
- var animationOpts = opts.animation;
- var scale = chart.scale;
- var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
- var labels = chart.data.labels;
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var scale = chart.scale;
+ var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
+ var labels = chart.data.labels;
- var circumference = me.calculateCircumference(dataset.data[index]);
- var centerX = scale.xCenter;
- var centerY = scale.yCenter;
+ var circumference = me.calculateCircumference(dataset.data[index]);
+ var centerX = scale.xCenter;
+ var centerY = scale.yCenter;
- // If there is NaN data before us, we need to calculate the starting angle correctly.
- // We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
- var visibleCount = 0;
- var meta = me.getMeta();
- for (var i = 0; i < index; ++i) {
- if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
- ++visibleCount;
- }
- }
+ // If there is NaN data before us, we need to calculate the starting angle correctly.
+ // We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
+ var visibleCount = 0;
+ var meta = me.getMeta();
+ for (var i = 0; i < index; ++i) {
+ if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
+ ++visibleCount;
+ }
+ }
- //var negHalfPI = -0.5 * Math.PI;
- var datasetStartAngle = opts.startAngle;
- var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
- var startAngle = datasetStartAngle + (circumference * visibleCount);
- var endAngle = startAngle + (arc.hidden ? 0 : circumference);
+ // var negHalfPI = -0.5 * Math.PI;
+ var datasetStartAngle = opts.startAngle;
+ var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var startAngle = datasetStartAngle + (circumference * visibleCount);
+ var endAngle = startAngle + (arc.hidden ? 0 : circumference);
- var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
- helpers.extend(arc, {
- // Utility
- _datasetIndex: me.index,
- _index: index,
- _scale: scale,
+ helpers.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+ _scale: scale,
- // Desired view properties
- _model: {
- x: centerX,
- y: centerY,
- innerRadius: 0,
- outerRadius: reset ? resetRadius : distance,
- startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
- endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
- label: getValueAtIndexOrDefault(labels, index, labels[index])
- }
- });
+ // Desired view properties
+ _model: {
+ x: centerX,
+ y: centerY,
+ innerRadius: 0,
+ outerRadius: reset ? resetRadius : distance,
+ startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
+ endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
+ label: getValueAtIndexOrDefault(labels, index, labels[index])
+ }
+ });
- // Apply border and fill style
- me.removeHoverStyle(arc);
+ // Apply border and fill style
+ me.removeHoverStyle(arc);
- arc.pivot();
- },
+ arc.pivot();
+ },
- removeHoverStyle: function(arc) {
- Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
- },
+ removeHoverStyle: function(arc) {
+ Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
+ },
- countVisibleElements: function() {
- var dataset = this.getDataset();
- var meta = this.getMeta();
- var count = 0;
+ countVisibleElements: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var count = 0;
- helpers.each(meta.data, function(element, index) {
- if (!isNaN(dataset.data[index]) && !element.hidden) {
- count++;
- }
- });
+ helpers.each(meta.data, function(element, index) {
+ if (!isNaN(dataset.data[index]) && !element.hidden) {
+ count++;
+ }
+ });
- return count;
- },
+ return count;
+ },
- calculateCircumference: function(value) {
- var count = this.getMeta().count;
- if (count > 0 && !isNaN(value)) {
- return (2 * Math.PI) / count;
- } else {
- return 0;
- }
- }
- });
-};
+ calculateCircumference: function(value) {
+ var count = this.getMeta().count;
+ if (count > 0 && !isNaN(value)) {
+ return (2 * Math.PI) / count;
+ }
+ return 0;
+ }
+ });
+ };
},{}],20:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.radar = {
- scale: {
- type: "radialLinear"
- },
- elements: {
- line: {
- tension: 0 // no bezier in radar
- }
- }
- };
+ Chart.defaults.radar = {
+ aspectRatio: 1,
+ scale: {
+ type: 'radialLinear'
+ },
+ elements: {
+ line: {
+ tension: 0 // no bezier in radar
+ }
+ }
+ };
- Chart.controllers.radar = Chart.DatasetController.extend({
+ Chart.controllers.radar = Chart.DatasetController.extend({
- datasetElementType: Chart.elements.Line,
+ datasetElementType: Chart.elements.Line,
- dataElementType: Chart.elements.Point,
+ dataElementType: Chart.elements.Point,
- linkScales: helpers.noop,
+ linkScales: helpers.noop,
- addElementAndReset: function(index) {
- Chart.DatasetController.prototype.addElementAndReset.call(this, index);
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data;
+ var custom = line.custom || {};
+ var dataset = me.getDataset();
+ var lineElementOptions = me.chart.options.elements.line;
+ var scale = me.chart.scale;
- // Make sure bezier control points are updated
- this.updateBezierControlPoints();
- },
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
- update: function(reset) {
- var me = this;
- var meta = me.getMeta();
- var line = meta.dataset;
- var points = meta.data;
- var custom = line.custom || {};
- var dataset = me.getDataset();
- var lineElementOptions = me.chart.options.elements.line;
- var scale = me.chart.scale;
+ helpers.extend(meta.dataset, {
+ // Utility
+ _datasetIndex: me.index,
+ _scale: scale,
+ // Data
+ _children: points,
+ _loop: true,
+ // Model
+ _model: {
+ // Appearance
+ tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
+ backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
+ borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
+ borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
+ fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
+ borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
+ borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
+ borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
+ borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
+ }
+ });
- // Compatibility: If the properties are defined with only the old name, use those values
- if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
- dataset.lineTension = dataset.tension;
- }
+ meta.dataset.pivot();
- helpers.extend(meta.dataset, {
- // Utility
- _datasetIndex: me.index,
- // Data
- _children: points,
- _loop: true,
- // Model
- _model: {
- // Appearance
- tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
- backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
- borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
- borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
- fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
- borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
- borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
- borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
- borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
+ // Update Points
+ helpers.each(points, function(point, index) {
+ me.updateElement(point, index, reset);
+ }, me);
- // Scale
- scaleTop: scale.top,
- scaleBottom: scale.bottom,
- scaleZero: scale.getBasePosition()
- }
- });
+ // Update bezier control points
+ me.updateBezierControlPoints();
+ },
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var scale = me.chart.scale;
+ var pointElementOptions = me.chart.options.elements.point;
+ var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
- meta.dataset.pivot();
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
+ dataset.pointRadius = dataset.radius;
+ }
+ if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
+ dataset.pointHitRadius = dataset.hitRadius;
+ }
- // Update Points
- helpers.each(points, function(point, index) {
- me.updateElement(point, index, reset);
- }, me);
+ helpers.extend(point, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+ _scale: scale,
+ // Desired view properties
+ _model: {
+ x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
+ y: reset ? scale.yCenter : pointPosition.y,
- // Update bezier control points
- me.updateBezierControlPoints();
- },
- updateElement: function(point, index, reset) {
- var me = this;
- var custom = point.custom || {};
- var dataset = me.getDataset();
- var scale = me.chart.scale;
- var pointElementOptions = me.chart.options.elements.point;
- var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
+ // Appearance
+ tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, me.chart.options.elements.line.tension),
+ radius: custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
+ backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
+ borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
+ borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth),
+ pointStyle: custom.pointStyle ? custom.pointStyle : helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle),
- helpers.extend(point, {
- // Utility
- _datasetIndex: me.index,
- _index: index,
- _scale: scale,
+ // Tooltip
+ hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.pointHitRadius, index, pointElementOptions.hitRadius)
+ }
+ });
- // Desired view properties
- _model: {
- x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
- y: reset ? scale.yCenter : pointPosition.y,
+ point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
+ },
+ updateBezierControlPoints: function() {
+ var chartArea = this.chart.chartArea;
+ var meta = this.getMeta();
- // Appearance
- tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.tension, me.chart.options.elements.line.tension),
- radius: custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
- backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
- borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
- borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth),
- pointStyle: custom.pointStyle ? custom.pointStyle : helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle),
+ helpers.each(meta.data, function(point, index) {
+ var model = point._model;
+ var controlPoints = helpers.splineCurve(
+ helpers.previousItem(meta.data, index, true)._model,
+ model,
+ helpers.nextItem(meta.data, index, true)._model,
+ model.tension
+ );
- // Tooltip
- hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.hitRadius, index, pointElementOptions.hitRadius)
- }
- });
+ // Prevent the bezier going outside of the bounds of the graph
+ model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left);
+ model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top);
- point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
- },
- updateBezierControlPoints: function() {
- var chartArea = this.chart.chartArea;
- var meta = this.getMeta();
+ model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left);
+ model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top);
- helpers.each(meta.data, function(point, index) {
- var model = point._model;
- var controlPoints = helpers.splineCurve(
- helpers.previousItem(meta.data, index, true)._model,
- model,
- helpers.nextItem(meta.data, index, true)._model,
- model.tension
- );
+ // Now pivot the point for animation
+ point.pivot();
+ });
+ },
- // Prevent the bezier going outside of the bounds of the graph
- model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left);
- model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top);
+ setHoverStyle: function(point) {
+ // Point
+ var dataset = this.chart.data.datasets[point._datasetIndex];
+ var custom = point.custom || {};
+ var index = point._index;
+ var model = point._model;
- model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left);
- model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top);
+ model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
+ model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
+ model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
+ model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
+ },
- // Now pivot the point for animation
- point.pivot();
- });
- },
+ removeHoverStyle: function(point) {
+ var dataset = this.chart.data.datasets[point._datasetIndex];
+ var custom = point.custom || {};
+ var index = point._index;
+ var model = point._model;
+ var pointElementOptions = this.chart.options.elements.point;
- draw: function(ease) {
- var meta = this.getMeta();
- var easingDecimal = ease || 1;
-
- // Transition Point Locations
- helpers.each(meta.data, function(point) {
- point.transition(easingDecimal);
- });
-
- // Transition and Draw the line
- meta.dataset.transition(easingDecimal).draw();
-
- // Draw the points
- helpers.each(meta.data, function(point) {
- point.draw();
- });
- },
-
- setHoverStyle: function(point) {
- // Point
- var dataset = this.chart.data.datasets[point._datasetIndex];
- var custom = point.custom || {};
- var index = point._index;
- var model = point._model;
-
- model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
- model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
- model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
- model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
- },
-
- removeHoverStyle: function(point) {
- var dataset = this.chart.data.datasets[point._datasetIndex];
- var custom = point.custom || {};
- var index = point._index;
- var model = point._model;
- var pointElementOptions = this.chart.options.elements.point;
-
- model.radius = custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.radius, index, pointElementOptions.radius);
- model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor);
- model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor);
- model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth);
- }
- });
-};
+ model.radius = custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius);
+ model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor);
+ model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor);
+ model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth);
+ }
+ });
+ };
},{}],21:[function(require,module,exports){
-/*global window: false */
-"use strict";
+ /* global window: false */
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.global.animation = {
- duration: 1000,
- easing: "easeOutQuart",
- onProgress: helpers.noop,
- onComplete: helpers.noop
- };
+ Chart.defaults.global.animation = {
+ duration: 1000,
+ easing: 'easeOutQuart',
+ onProgress: helpers.noop,
+ onComplete: helpers.noop
+ };
- Chart.Animation = Chart.Element.extend({
- currentStep: null, // the current animation step
- numSteps: 60, // default number of steps
- easing: "", // the easing to use for this animation
- render: null, // render function used by the animation service
+ Chart.Animation = Chart.Element.extend({
+ chart: null, // the animation associated chart instance
+ currentStep: 0, // the current animation step
+ numSteps: 60, // default number of steps
+ easing: '', // the easing to use for this animation
+ render: null, // render function used by the animation service
- onAnimationProgress: null, // user specified callback to fire on each step of the animation
- onAnimationComplete: null // user specified callback to fire when the animation finishes
- });
+ onAnimationProgress: null, // user specified callback to fire on each step of the animation
+ onAnimationComplete: null, // user specified callback to fire when the animation finishes
+ });
- Chart.animationService = {
- frameDuration: 17,
- animations: [],
- dropFrames: 0,
- request: null,
- addAnimation: function(chartInstance, animationObject, duration, lazy) {
- var me = this;
+ Chart.animationService = {
+ frameDuration: 17,
+ animations: [],
+ dropFrames: 0,
+ request: null,
- if (!lazy) {
- chartInstance.animating = true;
- }
+ /**
+ * @param {Chart} chart - The chart to animate.
+ * @param {Chart.Animation} animation - The animation that we will animate.
+ * @param {Number} duration - The animation duration in ms.
+ * @param {Boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
+ */
+ addAnimation: function(chart, animation, duration, lazy) {
+ var animations = this.animations;
+ var i, ilen;
- for (var index = 0; index < me.animations.length; ++index) {
- if (me.animations[index].chartInstance === chartInstance) {
- // replacing an in progress animation
- me.animations[index].animationObject = animationObject;
- return;
- }
- }
+ animation.chart = chart;
- me.animations.push({
- chartInstance: chartInstance,
- animationObject: animationObject
- });
+ if (!lazy) {
+ chart.animating = true;
+ }
- // If there are no animations queued, manually kickstart a digest, for lack of a better word
- if (me.animations.length === 1) {
- me.requestAnimationFrame();
- }
- },
- // Cancel the animation for a given chart instance
- cancelAnimation: function(chartInstance) {
- var index = helpers.findIndex(this.animations, function(animationWrapper) {
- return animationWrapper.chartInstance === chartInstance;
- });
+ for (i=0, ilen=animations.length; i < ilen; ++i) {
+ if (animations[i].chart === chart) {
+ animations[i] = animation;
+ return;
+ }
+ }
- if (index !== -1) {
- this.animations.splice(index, 1);
- chartInstance.animating = false;
- }
- },
- requestAnimationFrame: function() {
- var me = this;
- if (me.request === null) {
- // Skip animation frame requests until the active one is executed.
- // This can happen when processing mouse events, e.g. 'mousemove'
- // and 'mouseout' events will trigger multiple renders.
- me.request = helpers.requestAnimFrame.call(window, function() {
- me.request = null;
- me.startDigest();
- });
- }
- },
- startDigest: function() {
- var me = this;
+ animations.push(animation);
- var startTime = Date.now();
- var framesToDrop = 0;
+ // If there are no animations queued, manually kickstart a digest, for lack of a better word
+ if (animations.length === 1) {
+ this.requestAnimationFrame();
+ }
+ },
- if (me.dropFrames > 1) {
- framesToDrop = Math.floor(me.dropFrames);
- me.dropFrames = me.dropFrames % 1;
- }
+ cancelAnimation: function(chart) {
+ var index = helpers.findIndex(this.animations, function(animation) {
+ return animation.chart === chart;
+ });
- var i = 0;
- while (i < me.animations.length) {
- if (me.animations[i].animationObject.currentStep === null) {
- me.animations[i].animationObject.currentStep = 0;
- }
+ if (index !== -1) {
+ this.animations.splice(index, 1);
+ chart.animating = false;
+ }
+ },
- me.animations[i].animationObject.currentStep += 1 + framesToDrop;
+ requestAnimationFrame: function() {
+ var me = this;
+ if (me.request === null) {
+ // Skip animation frame requests until the active one is executed.
+ // This can happen when processing mouse events, e.g. 'mousemove'
+ // and 'mouseout' events will trigger multiple renders.
+ me.request = helpers.requestAnimFrame.call(window, function() {
+ me.request = null;
+ me.startDigest();
+ });
+ }
+ },
- if (me.animations[i].animationObject.currentStep > me.animations[i].animationObject.numSteps) {
- me.animations[i].animationObject.currentStep = me.animations[i].animationObject.numSteps;
- }
+ /**
+ * @private
+ */
+ startDigest: function() {
+ var me = this;
+ var startTime = Date.now();
+ var framesToDrop = 0;
- me.animations[i].animationObject.render(me.animations[i].chartInstance, me.animations[i].animationObject);
- if (me.animations[i].animationObject.onAnimationProgress && me.animations[i].animationObject.onAnimationProgress.call) {
- me.animations[i].animationObject.onAnimationProgress.call(me.animations[i].chartInstance, me.animations[i]);
- }
+ if (me.dropFrames > 1) {
+ framesToDrop = Math.floor(me.dropFrames);
+ me.dropFrames = me.dropFrames % 1;
+ }
- if (me.animations[i].animationObject.currentStep === me.animations[i].animationObject.numSteps) {
- if (me.animations[i].animationObject.onAnimationComplete && me.animations[i].animationObject.onAnimationComplete.call) {
- me.animations[i].animationObject.onAnimationComplete.call(me.animations[i].chartInstance, me.animations[i]);
- }
+ me.advance(1 + framesToDrop);
- // executed the last frame. Remove the animation.
- me.animations[i].chartInstance.animating = false;
+ var endTime = Date.now();
- me.animations.splice(i, 1);
- } else {
- ++i;
- }
- }
+ me.dropFrames += (endTime - startTime) / me.frameDuration;
- var endTime = Date.now();
- var dropFrames = (endTime - startTime) / me.frameDuration;
+ // Do we have more stuff to animate?
+ if (me.animations.length > 0) {
+ me.requestAnimationFrame();
+ }
+ },
- me.dropFrames += dropFrames;
+ /**
+ * @private
+ */
+ advance: function(count) {
+ var animations = this.animations;
+ var animation, chart;
+ var i = 0;
- // Do we have more stuff to animate?
- if (me.animations.length > 0) {
- me.requestAnimationFrame();
- }
- }
- };
-};
+ while (i < animations.length) {
+ animation = animations[i];
+ chart = animation.chart;
+
+ animation.currentStep = (animation.currentStep || 0) + count;
+ animation.currentStep = Math.min(animation.currentStep, animation.numSteps);
+
+ helpers.callback(animation.render, [chart, animation], chart);
+ helpers.callback(animation.onAnimationProgress, [animation], chart);
+
+ if (animation.currentStep >= animation.numSteps) {
+ helpers.callback(animation.onAnimationComplete, [animation], chart);
+ chart.animating = false;
+ animations.splice(i, 1);
+ } else {
+ ++i;
+ }
+ }
+ }
+ };
+
+ /**
+ * Provided for backward compatibility, use Chart.Animation instead
+ * @prop Chart.Animation#animationObject
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+ Object.defineProperty(Chart.Animation.prototype, 'animationObject', {
+ get: function() {
+ return this;
+ }
+ });
+
+ /**
+ * Provided for backward compatibility, use Chart.Animation#chart instead
+ * @prop Chart.Animation#chartInstance
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+ Object.defineProperty(Chart.Animation.prototype, 'chartInstance', {
+ get: function() {
+ return this.chart;
+ },
+ set: function(value) {
+ this.chart = value;
+ }
+ });
+
+ };
+
},{}],22:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
- // Global Chart canvas helpers object for drawing items to canvas
- var helpers = Chart.canvasHelpers = {};
+ module.exports = function(Chart) {
+ // Global Chart canvas helpers object for drawing items to canvas
+ var helpers = Chart.canvasHelpers = {};
- helpers.drawPoint = function(ctx, pointStyle, radius, x, y) {
- var type, edgeLength, xOffset, yOffset, height, size;
+ helpers.drawPoint = function(ctx, pointStyle, radius, x, y) {
+ var type, edgeLength, xOffset, yOffset, height, size;
- if (typeof pointStyle === 'object') {
- type = pointStyle.toString();
- if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
- ctx.drawImage(pointStyle, x - pointStyle.width / 2, y - pointStyle.height / 2);
- return;
- }
- }
+ if (typeof pointStyle === 'object') {
+ type = pointStyle.toString();
+ if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
+ ctx.drawImage(pointStyle, x - pointStyle.width / 2, y - pointStyle.height / 2, pointStyle.width, pointStyle.height);
+ return;
+ }
+ }
- if (isNaN(radius) || radius <= 0) {
- return;
- }
+ if (isNaN(radius) || radius <= 0) {
+ return;
+ }
- switch (pointStyle) {
- // Default includes circle
- default:
- ctx.beginPath();
- ctx.arc(x, y, radius, 0, Math.PI * 2);
- ctx.closePath();
- ctx.fill();
- break;
- case 'triangle':
- ctx.beginPath();
- edgeLength = 3 * radius / Math.sqrt(3);
- height = edgeLength * Math.sqrt(3) / 2;
- ctx.moveTo(x - edgeLength / 2, y + height / 3);
- ctx.lineTo(x + edgeLength / 2, y + height / 3);
- ctx.lineTo(x, y - 2 * height / 3);
- ctx.closePath();
- ctx.fill();
- break;
- case 'rect':
- size = 1 / Math.SQRT2 * radius;
- ctx.beginPath();
- ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
- ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
- break;
- case 'rectRot':
- size = 1 / Math.SQRT2 * radius;
- ctx.beginPath();
- ctx.moveTo(x - size, y);
- ctx.lineTo(x, y + size);
- ctx.lineTo(x + size, y);
- ctx.lineTo(x, y - size);
- ctx.closePath();
- ctx.fill();
- break;
- case 'cross':
- ctx.beginPath();
- ctx.moveTo(x, y + radius);
- ctx.lineTo(x, y - radius);
- ctx.moveTo(x - radius, y);
- ctx.lineTo(x + radius, y);
- ctx.closePath();
- break;
- case 'crossRot':
- ctx.beginPath();
- xOffset = Math.cos(Math.PI / 4) * radius;
- yOffset = Math.sin(Math.PI / 4) * radius;
- ctx.moveTo(x - xOffset, y - yOffset);
- ctx.lineTo(x + xOffset, y + yOffset);
- ctx.moveTo(x - xOffset, y + yOffset);
- ctx.lineTo(x + xOffset, y - yOffset);
- ctx.closePath();
- break;
- case 'star':
- ctx.beginPath();
- ctx.moveTo(x, y + radius);
- ctx.lineTo(x, y - radius);
- ctx.moveTo(x - radius, y);
- ctx.lineTo(x + radius, y);
- xOffset = Math.cos(Math.PI / 4) * radius;
- yOffset = Math.sin(Math.PI / 4) * radius;
- ctx.moveTo(x - xOffset, y - yOffset);
- ctx.lineTo(x + xOffset, y + yOffset);
- ctx.moveTo(x - xOffset, y + yOffset);
- ctx.lineTo(x + xOffset, y - yOffset);
- ctx.closePath();
- break;
- case 'line':
- ctx.beginPath();
- ctx.moveTo(x - radius, y);
- ctx.lineTo(x + radius, y);
- ctx.closePath();
- break;
- case 'dash':
- ctx.beginPath();
- ctx.moveTo(x, y);
- ctx.lineTo(x + radius, y);
- ctx.closePath();
- break;
- }
+ switch (pointStyle) {
+ // Default includes circle
+ default:
+ ctx.beginPath();
+ ctx.arc(x, y, radius, 0, Math.PI * 2);
+ ctx.closePath();
+ ctx.fill();
+ break;
+ case 'triangle':
+ ctx.beginPath();
+ edgeLength = 3 * radius / Math.sqrt(3);
+ height = edgeLength * Math.sqrt(3) / 2;
+ ctx.moveTo(x - edgeLength / 2, y + height / 3);
+ ctx.lineTo(x + edgeLength / 2, y + height / 3);
+ ctx.lineTo(x, y - 2 * height / 3);
+ ctx.closePath();
+ ctx.fill();
+ break;
+ case 'rect':
+ size = 1 / Math.SQRT2 * radius;
+ ctx.beginPath();
+ ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
+ ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
+ break;
+ case 'rectRounded':
+ var offset = radius / Math.SQRT2;
+ var leftX = x - offset;
+ var topY = y - offset;
+ var sideSize = Math.SQRT2 * radius;
+ Chart.helpers.drawRoundedRectangle(ctx, leftX, topY, sideSize, sideSize, radius / 2);
+ ctx.fill();
+ break;
+ case 'rectRot':
+ size = 1 / Math.SQRT2 * radius;
+ ctx.beginPath();
+ ctx.moveTo(x - size, y);
+ ctx.lineTo(x, y + size);
+ ctx.lineTo(x + size, y);
+ ctx.lineTo(x, y - size);
+ ctx.closePath();
+ ctx.fill();
+ break;
+ case 'cross':
+ ctx.beginPath();
+ ctx.moveTo(x, y + radius);
+ ctx.lineTo(x, y - radius);
+ ctx.moveTo(x - radius, y);
+ ctx.lineTo(x + radius, y);
+ ctx.closePath();
+ break;
+ case 'crossRot':
+ ctx.beginPath();
+ xOffset = Math.cos(Math.PI / 4) * radius;
+ yOffset = Math.sin(Math.PI / 4) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x - xOffset, y + yOffset);
+ ctx.lineTo(x + xOffset, y - yOffset);
+ ctx.closePath();
+ break;
+ case 'star':
+ ctx.beginPath();
+ ctx.moveTo(x, y + radius);
+ ctx.lineTo(x, y - radius);
+ ctx.moveTo(x - radius, y);
+ ctx.lineTo(x + radius, y);
+ xOffset = Math.cos(Math.PI / 4) * radius;
+ yOffset = Math.sin(Math.PI / 4) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x - xOffset, y + yOffset);
+ ctx.lineTo(x + xOffset, y - yOffset);
+ ctx.closePath();
+ break;
+ case 'line':
+ ctx.beginPath();
+ ctx.moveTo(x - radius, y);
+ ctx.lineTo(x + radius, y);
+ ctx.closePath();
+ break;
+ case 'dash':
+ ctx.beginPath();
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + radius, y);
+ ctx.closePath();
+ break;
+ }
- ctx.stroke();
- };
-};
+ ctx.stroke();
+ };
+
+ helpers.clipArea = function(ctx, clipArea) {
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(clipArea.left, clipArea.top, clipArea.right - clipArea.left, clipArea.bottom - clipArea.top);
+ ctx.clip();
+ };
+
+ helpers.unclipArea = function(ctx) {
+ ctx.restore();
+ };
+
+ helpers.lineTo = function(ctx, previous, target, flip) {
+ if (target.steppedLine) {
+ if (target.steppedLine === 'after') {
+ ctx.lineTo(previous.x, target.y);
+ } else {
+ ctx.lineTo(target.x, previous.y);
+ }
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ if (!target.tension) {
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ ctx.bezierCurveTo(
+ flip? previous.controlPointPreviousX : previous.controlPointNextX,
+ flip? previous.controlPointPreviousY : previous.controlPointNextY,
+ flip? target.controlPointNextX : target.controlPointPreviousX,
+ flip? target.controlPointNextY : target.controlPointPreviousY,
+ target.x,
+ target.y);
+ };
+
+ Chart.helpers.canvas = helpers;
+ };
+
},{}],23:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
- //Create a dictionary of chart types, to allow for extension of existing types
- Chart.types = {};
+ var helpers = Chart.helpers;
+ var plugins = Chart.plugins;
+ var platform = Chart.platform;
- //Store a reference to each instance - allowing us to globally resize chart instances on window resize.
- //Destroy method on the chart will remove the instance of the chart from this reference.
- Chart.instances = {};
+ // Create a dictionary of chart types, to allow for extension of existing types
+ Chart.types = {};
- // Controllers available for dataset visualization eg. bar, line, slice, etc.
- Chart.controllers = {};
+ // Store a reference to each instance - allowing us to globally resize chart instances on window resize.
+ // Destroy method on the chart will remove the instance of the chart from this reference.
+ Chart.instances = {};
- /**
- * @class Chart.Controller
- * The main controller of a chart.
- */
- Chart.Controller = function(instance) {
+ // Controllers available for dataset visualization eg. bar, line, slice, etc.
+ Chart.controllers = {};
- this.chart = instance;
- this.config = instance.config;
- this.options = this.config.options = helpers.configMerge(Chart.defaults.global, Chart.defaults[this.config.type], this.config.options || {});
- this.id = helpers.uid();
+ /**
+ * Initializes the given config with global and chart default values.
+ */
+ function initConfig(config) {
+ config = config || {};
- Object.defineProperty(this, 'data', {
- get: function() {
- return this.config.data;
- }
- });
+ // Do NOT use configMerge() for the data object because this method merges arrays
+ // and so would change references to labels and datasets, preventing data updates.
+ var data = config.data = config.data || {};
+ data.datasets = data.datasets || [];
+ data.labels = data.labels || [];
- //Add the chart instance to the global namespace
- Chart.instances[this.id] = this;
+ config.options = helpers.configMerge(
+ Chart.defaults.global,
+ Chart.defaults[config.type],
+ config.options || {});
- if (this.options.responsive) {
- // Silent resize before chart draws
- this.resize(true);
- }
+ return config;
+ }
- this.initialize();
+ /**
+ * Updates the config of the chart
+ * @param chart {Chart} chart to update the options for
+ */
+ function updateConfig(chart) {
+ var newOptions = chart.options;
- return this;
- };
+ // Update Scale(s) with options
+ if (newOptions.scale) {
+ chart.scale.options = newOptions.scale;
+ } else if (newOptions.scales) {
+ newOptions.scales.xAxes.concat(newOptions.scales.yAxes).forEach(function(scaleOptions) {
+ chart.scales[scaleOptions.id].options = scaleOptions;
+ });
+ }
- helpers.extend(Chart.Controller.prototype, /** @lends Chart.Controller */ {
+ // Tooltip
+ chart.tooltip._options = newOptions.tooltips;
+ }
- initialize: function() {
- var me = this;
- // Before init plugin notification
- Chart.plugins.notify('beforeInit', [me]);
+ function positionIsHorizontal(position) {
+ return position === 'top' || position === 'bottom';
+ }
- me.bindEvents();
+ helpers.extend(Chart.prototype, /** @lends Chart */ {
+ /**
+ * @private
+ */
+ construct: function(item, config) {
+ var me = this;
- // Make sure controllers are built first so that each dataset is bound to an axis before the scales
- // are built
- me.ensureScalesHaveIDs();
- me.buildOrUpdateControllers();
- me.buildScales();
- me.updateLayout();
- me.resetElements();
- me.initToolTip();
- me.update();
+ config = initConfig(config);
- // After init plugin notification
- Chart.plugins.notify('afterInit', [me]);
+ var context = platform.acquireContext(item, config);
+ var canvas = context && context.canvas;
+ var height = canvas && canvas.height;
+ var width = canvas && canvas.width;
- return me;
- },
+ me.id = helpers.uid();
+ me.ctx = context;
+ me.canvas = canvas;
+ me.config = config;
+ me.width = width;
+ me.height = height;
+ me.aspectRatio = height? width / height : null;
+ me.options = config.options;
+ me._bufferedRender = false;
- clear: function() {
- helpers.clear(this.chart);
- return this;
- },
+ /**
+ * Provided for backward compatibility, Chart and Chart.Controller have been merged,
+ * the "instance" still need to be defined since it might be called from plugins.
+ * @prop Chart#chart
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+ me.chart = me;
+ me.controller = me; // chart.chart.controller #inception
- stop: function() {
- // Stops any current animation loop occuring
- Chart.animationService.cancelAnimation(this);
- return this;
- },
+ // Add the chart instance to the global namespace
+ Chart.instances[me.id] = me;
- resize: function resize(silent) {
- var me = this;
- var chart = me.chart;
- var canvas = chart.canvas;
- var newWidth = helpers.getMaximumWidth(canvas);
- var aspectRatio = chart.aspectRatio;
- var newHeight = (me.options.maintainAspectRatio && isNaN(aspectRatio) === false && isFinite(aspectRatio) && aspectRatio !== 0) ? newWidth / aspectRatio : helpers.getMaximumHeight(canvas);
+ // Define alias to the config data: `chart.data === chart.config.data`
+ Object.defineProperty(me, 'data', {
+ get: function() {
+ return me.config.data;
+ },
+ set: function(value) {
+ me.config.data = value;
+ }
+ });
- var sizeChanged = chart.width !== newWidth || chart.height !== newHeight;
+ if (!context || !canvas) {
+ // The given item is not a compatible context2d element, let's return before finalizing
+ // the chart initialization but after setting basic chart / controller properties that
+ // can help to figure out that the chart is not valid (e.g chart.canvas !== null);
+ // https://github.com/chartjs/Chart.js/issues/2807
+ console.error("Failed to create chart: can't acquire context from the given item");
+ return;
+ }
- if (!sizeChanged) {
- return me;
- }
+ me.initialize();
+ me.update();
+ },
- canvas.width = chart.width = newWidth;
- canvas.height = chart.height = newHeight;
+ /**
+ * @private
+ */
+ initialize: function() {
+ var me = this;
- helpers.retinaScale(chart);
+ // Before init plugin notification
+ plugins.notify(me, 'beforeInit');
- // Notify any plugins about the resize
- var newSize = { width: newWidth, height: newHeight };
- Chart.plugins.notify('resize', [me, newSize]);
+ helpers.retinaScale(me);
- // Notify of resize
- if (me.options.onResize) {
- me.options.onResize(me, newSize);
- }
+ me.bindEvents();
- if (!silent) {
- me.stop();
- me.update(me.options.responsiveAnimationDuration);
- }
+ if (me.options.responsive) {
+ // Initial resize before chart draws (must be silent to preserve initial animations).
+ me.resize(true);
+ }
- return me;
- },
+ // Make sure scales have IDs and are built before we build any controllers.
+ me.ensureScalesHaveIDs();
+ me.buildScales();
+ me.initToolTip();
- ensureScalesHaveIDs: function() {
- var options = this.options;
- var scalesOptions = options.scales || {};
- var scaleOptions = options.scale;
+ // After init plugin notification
+ plugins.notify(me, 'afterInit');
- helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) {
- xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
- });
+ return me;
+ },
- helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) {
- yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
- });
+ clear: function() {
+ helpers.clear(this);
+ return this;
+ },
- if (scaleOptions) {
- scaleOptions.id = scaleOptions.id || 'scale';
- }
- },
+ stop: function() {
+ // Stops any current animation loop occurring
+ Chart.animationService.cancelAnimation(this);
+ return this;
+ },
- /**
- * Builds a map of scale ID to scale object for future lookup.
- */
- buildScales: function() {
- var me = this;
- var options = me.options;
- var scales = me.scales = {};
- var items = [];
+ resize: function(silent) {
+ var me = this;
+ var options = me.options;
+ var canvas = me.canvas;
+ var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
- if (options.scales) {
- items = items.concat(
- (options.scales.xAxes || []).map(function(xAxisOptions) {
- return { options: xAxisOptions, dtype: 'category' }; }),
- (options.scales.yAxes || []).map(function(yAxisOptions) {
- return { options: yAxisOptions, dtype: 'linear' }; }));
- }
+ // the canvas render width and height will be casted to integers so make sure that
+ // the canvas display style uses the same integer values to avoid blurring effect.
+ var newWidth = Math.floor(helpers.getMaximumWidth(canvas));
+ var newHeight = Math.floor(aspectRatio? newWidth / aspectRatio : helpers.getMaximumHeight(canvas));
- if (options.scale) {
- items.push({ options: options.scale, dtype: 'radialLinear', isDefault: true });
- }
+ if (me.width === newWidth && me.height === newHeight) {
+ return;
+ }
- helpers.each(items, function(item) {
- var scaleOptions = item.options;
- var scaleType = helpers.getValueOrDefault(scaleOptions.type, item.dtype);
- var scaleClass = Chart.scaleService.getScaleConstructor(scaleType);
- if (!scaleClass) {
- return;
- }
+ canvas.width = me.width = newWidth;
+ canvas.height = me.height = newHeight;
+ canvas.style.width = newWidth + 'px';
+ canvas.style.height = newHeight + 'px';
- var scale = new scaleClass({
- id: scaleOptions.id,
- options: scaleOptions,
- ctx: me.chart.ctx,
- chart: me
- });
+ helpers.retinaScale(me);
- scales[scale.id] = scale;
+ if (!silent) {
+ // Notify any plugins about the resize
+ var newSize = {width: newWidth, height: newHeight};
+ plugins.notify(me, 'resize', [newSize]);
- // TODO(SB): I think we should be able to remove this custom case (options.scale)
- // and consider it as a regular scale part of the "scales"" map only! This would
- // make the logic easier and remove some useless? custom code.
- if (item.isDefault) {
- me.scale = scale;
- }
- });
+ // Notify of resize
+ if (me.options.onResize) {
+ me.options.onResize(me, newSize);
+ }
- Chart.scaleService.addScalesToLayout(this);
- },
+ me.stop();
+ me.update(me.options.responsiveAnimationDuration);
+ }
+ },
- updateLayout: function() {
- Chart.layoutService.update(this, this.chart.width, this.chart.height);
- },
+ ensureScalesHaveIDs: function() {
+ var options = this.options;
+ var scalesOptions = options.scales || {};
+ var scaleOptions = options.scale;
- buildOrUpdateControllers: function() {
- var me = this;
- var types = [];
- var newControllers = [];
+ helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) {
+ xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
+ });
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- var meta = me.getDatasetMeta(datasetIndex);
- if (!meta.type) {
- meta.type = dataset.type || me.config.type;
- }
+ helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) {
+ yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
+ });
- types.push(meta.type);
+ if (scaleOptions) {
+ scaleOptions.id = scaleOptions.id || 'scale';
+ }
+ },
- if (meta.controller) {
- meta.controller.updateIndex(datasetIndex);
- } else {
- meta.controller = new Chart.controllers[meta.type](me, datasetIndex);
- newControllers.push(meta.controller);
- }
- }, me);
+ /**
+ * Builds a map of scale ID to scale object for future lookup.
+ */
+ buildScales: function() {
+ var me = this;
+ var options = me.options;
+ var scales = me.scales = {};
+ var items = [];
- if (types.length > 1) {
- for (var i = 1; i < types.length; i++) {
- if (types[i] !== types[i - 1]) {
- me.isCombo = true;
- break;
- }
- }
- }
+ if (options.scales) {
+ items = items.concat(
+ (options.scales.xAxes || []).map(function(xAxisOptions) {
+ return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
+ }),
+ (options.scales.yAxes || []).map(function(yAxisOptions) {
+ return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
+ })
+ );
+ }
- return newControllers;
- },
+ if (options.scale) {
+ items.push({
+ options: options.scale,
+ dtype: 'radialLinear',
+ isDefault: true,
+ dposition: 'chartArea'
+ });
+ }
- resetElements: function() {
- var me = this;
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- me.getDatasetMeta(datasetIndex).controller.reset();
- }, me);
- },
+ helpers.each(items, function(item) {
+ var scaleOptions = item.options;
+ var scaleType = helpers.getValueOrDefault(scaleOptions.type, item.dtype);
+ var scaleClass = Chart.scaleService.getScaleConstructor(scaleType);
+ if (!scaleClass) {
+ return;
+ }
- update: function update(animationDuration, lazy) {
- var me = this;
- Chart.plugins.notify('beforeUpdate', [me]);
+ if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
+ scaleOptions.position = item.dposition;
+ }
- // In case the entire data object changed
- me.tooltip._data = me.data;
+ var scale = new scaleClass({
+ id: scaleOptions.id,
+ options: scaleOptions,
+ ctx: me.ctx,
+ chart: me
+ });
- // Make sure dataset controllers are updated and new controllers are reset
- var newControllers = me.buildOrUpdateControllers();
+ scales[scale.id] = scale;
- // Make sure all dataset controllers have correct meta data counts
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
- }, me);
+ // TODO(SB): I think we should be able to remove this custom case (options.scale)
+ // and consider it as a regular scale part of the "scales"" map only! This would
+ // make the logic easier and remove some useless? custom code.
+ if (item.isDefault) {
+ me.scale = scale;
+ }
+ });
- Chart.layoutService.update(me, me.chart.width, me.chart.height);
+ Chart.scaleService.addScalesToLayout(this);
+ },
- // Apply changes to the dataets that require the scales to have been calculated i.e BorderColor chages
- Chart.plugins.notify('afterScaleUpdate', [me]);
+ buildOrUpdateControllers: function() {
+ var me = this;
+ var types = [];
+ var newControllers = [];
- // Can only reset the new controllers after the scales have been updated
- helpers.each(newControllers, function(controller) {
- controller.reset();
- });
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ var meta = me.getDatasetMeta(datasetIndex);
+ if (!meta.type) {
+ meta.type = dataset.type || me.config.type;
+ }
- me.updateDatasets();
+ types.push(meta.type);
- // Do this before render so that any plugins that need final scale updates can use it
- Chart.plugins.notify('afterUpdate', [me]);
+ if (meta.controller) {
+ meta.controller.updateIndex(datasetIndex);
+ } else {
+ var ControllerClass = Chart.controllers[meta.type];
+ if (ControllerClass === undefined) {
+ throw new Error('"' + meta.type + '" is not a chart type.');
+ }
- me.render(animationDuration, lazy);
- },
+ meta.controller = new ControllerClass(me, datasetIndex);
+ newControllers.push(meta.controller);
+ }
+ }, me);
- /**
- * @method beforeDatasetsUpdate
- * @description Called before all datasets are updated. If a plugin returns false,
- * the datasets update will be cancelled until another chart update is triggered.
- * @param {Object} instance the chart instance being updated.
- * @returns {Boolean} false to cancel the datasets update.
- * @memberof Chart.PluginBase
- * @since version 2.1.5
- * @instance
- */
+ if (types.length > 1) {
+ for (var i = 1; i < types.length; i++) {
+ if (types[i] !== types[i - 1]) {
+ me.isCombo = true;
+ break;
+ }
+ }
+ }
- /**
- * @method afterDatasetsUpdate
- * @description Called after all datasets have been updated. Note that this
- * extension will not be called if the datasets update has been cancelled.
- * @param {Object} instance the chart instance being updated.
- * @memberof Chart.PluginBase
- * @since version 2.1.5
- * @instance
- */
+ return newControllers;
+ },
+
+ /**
+ * Reset the elements of all datasets
+ * @private
+ */
+ resetElements: function() {
+ var me = this;
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.reset();
+ }, me);
+ },
+
+ /**
+ * Resets the chart back to it's state before the initial animation
+ */
+ reset: function() {
+ this.resetElements();
+ this.tooltip.initialize();
+ },
+
+ update: function(animationDuration, lazy) {
+ var me = this;
+
+ updateConfig(me);
+
+ if (plugins.notify(me, 'beforeUpdate') === false) {
+ return;
+ }
+
+ // In case the entire data object changed
+ me.tooltip._data = me.data;
+
+ // Make sure dataset controllers are updated and new controllers are reset
+ var newControllers = me.buildOrUpdateControllers();
+
+ // Make sure all dataset controllers have correct meta data counts
+ helpers.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
+ }, me);
+
+ me.updateLayout();
+
+ // Can only reset the new controllers after the scales have been updated
+ helpers.each(newControllers, function(controller) {
+ controller.reset();
+ });
+
+ me.updateDatasets();
+
+ // Do this before render so that any plugins that need final scale updates can use it
+ plugins.notify(me, 'afterUpdate');
+
+ if (me._bufferedRender) {
+ me._bufferedRequest = {
+ lazy: lazy,
+ duration: animationDuration
+ };
+ } else {
+ me.render(animationDuration, lazy);
+ }
+ },
+
+ /**
+ * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
+ * hook, in which case, plugins will not be called on `afterLayout`.
+ * @private
+ */
+ updateLayout: function() {
+ var me = this;
+
+ if (plugins.notify(me, 'beforeLayout') === false) {
+ return;
+ }
+
+ Chart.layoutService.update(this, this.width, this.height);
+
+ /**
+ * Provided for backward compatibility, use `afterLayout` instead.
+ * @method IPlugin#afterScaleUpdate
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+ plugins.notify(me, 'afterScaleUpdate');
+ plugins.notify(me, 'afterLayout');
+ },
+
+ /**
+ * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
+ * @private
+ */
+ updateDatasets: function() {
+ var me = this;
+
+ if (plugins.notify(me, 'beforeDatasetsUpdate') === false) {
+ return;
+ }
+
+ for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.updateDataset(i);
+ }
+
+ plugins.notify(me, 'afterDatasetsUpdate');
+ },
+
+ /**
+ * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
+ * @private
+ */
+ updateDataset: function(index) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index
+ };
+
+ if (plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
+ return;
+ }
+
+ meta.controller.update();
+
+ plugins.notify(me, 'afterDatasetUpdate', [args]);
+ },
+
+ render: function(duration, lazy) {
+ var me = this;
+
+ if (plugins.notify(me, 'beforeRender') === false) {
+ return;
+ }
+
+ var animationOptions = me.options.animation;
+ var onComplete = function(animation) {
+ plugins.notify(me, 'afterRender');
+ helpers.callback(animationOptions && animationOptions.onComplete, [animation], me);
+ };
+
+ if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
+ var animation = new Chart.Animation({
+ numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps
+ easing: animationOptions.easing,
+
+ render: function(chart, animationObject) {
+ var easingFunction = helpers.easingEffects[animationObject.easing];
+ var currentStep = animationObject.currentStep;
+ var stepDecimal = currentStep / animationObject.numSteps;
+
+ chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
+ },
+
+ onAnimationProgress: animationOptions.onProgress,
+ onAnimationComplete: onComplete
+ });
+
+ Chart.animationService.addAnimation(me, animation, duration, lazy);
+ } else {
+ me.draw();
+
+ // See https://github.com/chartjs/Chart.js/issues/3781
+ onComplete(new Chart.Animation({numSteps: 0, chart: me}));
+ }
+
+ return me;
+ },
+
+ draw: function(easingValue) {
+ var me = this;
+
+ me.clear();
+
+ if (easingValue === undefined || easingValue === null) {
+ easingValue = 1;
+ }
- /**
- * Updates all datasets unless a plugin returns false to the beforeDatasetsUpdate
- * extension, in which case no datasets will be updated and the afterDatasetsUpdate
- * notification will be skipped.
- * @protected
- * @instance
- */
- updateDatasets: function() {
- var me = this;
- var i, ilen;
+ me.transition(easingValue);
- if (Chart.plugins.notify('beforeDatasetsUpdate', [ me ])) {
- for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
- me.getDatasetMeta(i).controller.update();
- }
+ if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
+ return;
+ }
- Chart.plugins.notify('afterDatasetsUpdate', [ me ]);
- }
- },
+ // Draw all the scales
+ helpers.each(me.boxes, function(box) {
+ box.draw(me.chartArea);
+ }, me);
- render: function render(duration, lazy) {
- var me = this;
- Chart.plugins.notify('beforeRender', [me]);
+ if (me.scale) {
+ me.scale.draw();
+ }
- var animationOptions = me.options.animation;
- if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
- var animation = new Chart.Animation();
- animation.numSteps = (duration || animationOptions.duration) / 16.66; //60 fps
- animation.easing = animationOptions.easing;
+ me.drawDatasets(easingValue);
- // render function
- animation.render = function(chartInstance, animationObject) {
- var easingFunction = helpers.easingEffects[animationObject.easing];
- var stepDecimal = animationObject.currentStep / animationObject.numSteps;
- var easeDecimal = easingFunction(stepDecimal);
+ // Finally draw the tooltip
+ me.tooltip.draw();
- chartInstance.draw(easeDecimal, stepDecimal, animationObject.currentStep);
- };
+ plugins.notify(me, 'afterDraw', [easingValue]);
+ },
- // user events
- animation.onAnimationProgress = animationOptions.onProgress;
- animation.onAnimationComplete = animationOptions.onComplete;
+ /**
+ * @private
+ */
+ transition: function(easingValue) {
+ var me = this;
- Chart.animationService.addAnimation(me, animation, duration, lazy);
- } else {
- me.draw();
- if (animationOptions && animationOptions.onComplete && animationOptions.onComplete.call) {
- animationOptions.onComplete.call(me);
- }
- }
- return me;
- },
+ for (var i=0, ilen=(me.data.datasets || []).length; i<ilen; ++i) {
+ if (me.isDatasetVisible(i)) {
+ me.getDatasetMeta(i).controller.transition(easingValue);
+ }
+ }
- draw: function(ease) {
- var me = this;
- var easingDecimal = ease || 1;
- me.clear();
+ me.tooltip.transition(easingValue);
+ },
- Chart.plugins.notify('beforeDraw', [me, easingDecimal]);
+ /**
+ * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
+ * @private
+ */
+ drawDatasets: function(easingValue) {
+ var me = this;
- // Draw all the scales
- helpers.each(me.boxes, function(box) {
- box.draw(me.chartArea);
- }, me);
- if (me.scale) {
- me.scale.draw();
- }
+ if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
+ return;
+ }
- Chart.plugins.notify('beforeDatasetsDraw', [me, easingDecimal]);
+ // Draw datasets reversed to support proper line stacking
+ for (var i=(me.data.datasets || []).length - 1; i >= 0; --i) {
+ if (me.isDatasetVisible(i)) {
+ me.drawDataset(i, easingValue);
+ }
+ }
- // Draw each dataset via its respective controller (reversed to support proper line stacking)
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- if (me.isDatasetVisible(datasetIndex)) {
- me.getDatasetMeta(datasetIndex).controller.draw(ease);
- }
- }, me, true);
+ plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
+ },
- Chart.plugins.notify('afterDatasetsDraw', [me, easingDecimal]);
+ /**
+ * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetDraw`.
+ * @private
+ */
+ drawDataset: function(index, easingValue) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index,
+ easingValue: easingValue
+ };
- // Finally draw the tooltip
- me.tooltip.transition(easingDecimal).draw();
+ if (plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
+ return;
+ }
- Chart.plugins.notify('afterDraw', [me, easingDecimal]);
- },
+ meta.controller.draw(easingValue);
- // Get the single element that was clicked on
- // @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
- getElementAtEvent: function(e) {
- var me = this;
- var eventPosition = helpers.getRelativePosition(e, me.chart);
- var elementsArray = [];
+ plugins.notify(me, 'afterDatasetDraw', [args]);
+ },
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- if (me.isDatasetVisible(datasetIndex)) {
- var meta = me.getDatasetMeta(datasetIndex);
- helpers.each(meta.data, function(element) {
- if (element.inRange(eventPosition.x, eventPosition.y)) {
- elementsArray.push(element);
- return elementsArray;
- }
- });
- }
- });
+ // Get the single element that was clicked on
+ // @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
+ getElementAtEvent: function(e) {
+ return Chart.Interaction.modes.single(this, e);
+ },
- return elementsArray.slice(0, 1);
- },
+ getElementsAtEvent: function(e) {
+ return Chart.Interaction.modes.label(this, e, {intersect: true});
+ },
- getElementsAtEvent: function(e) {
- var me = this;
- var eventPosition = helpers.getRelativePosition(e, me.chart);
- var elementsArray = [];
+ getElementsAtXAxis: function(e) {
+ return Chart.Interaction.modes['x-axis'](this, e, {intersect: true});
+ },
- var found = (function() {
- if (me.data.datasets) {
- for (var i = 0; i < me.data.datasets.length; i++) {
- var meta = me.getDatasetMeta(i);
- if (me.isDatasetVisible(i)) {
- for (var j = 0; j < meta.data.length; j++) {
- if (meta.data[j].inRange(eventPosition.x, eventPosition.y)) {
- return meta.data[j];
- }
- }
- }
- }
- }
- }).call(me);
+ getElementsAtEventForMode: function(e, mode, options) {
+ var method = Chart.Interaction.modes[mode];
+ if (typeof method === 'function') {
+ return method(this, e, options);
+ }
- if (!found) {
- return elementsArray;
- }
+ return [];
+ },
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- if (me.isDatasetVisible(datasetIndex)) {
- var meta = me.getDatasetMeta(datasetIndex),
- element = meta.data[found._index];
- if(element && !element._view.skip){
- elementsArray.push(element);
- }
- }
- }, me);
+ getDatasetAtEvent: function(e) {
+ return Chart.Interaction.modes.dataset(this, e, {intersect: true});
+ },
- return elementsArray;
- },
+ getDatasetMeta: function(datasetIndex) {
+ var me = this;
+ var dataset = me.data.datasets[datasetIndex];
+ if (!dataset._meta) {
+ dataset._meta = {};
+ }
- getElementsAtXAxis: function(e) {
- var me = this;
- var eventPosition = helpers.getRelativePosition(e, me.chart);
- var elementsArray = [];
+ var meta = dataset._meta[me.id];
+ if (!meta) {
+ meta = dataset._meta[me.id] = {
+ type: null,
+ data: [],
+ dataset: null,
+ controller: null,
+ hidden: null, // See isDatasetVisible() comment
+ xAxisID: null,
+ yAxisID: null
+ };
+ }
- var found = (function() {
- if (me.data.datasets) {
- for (var i = 0; i < me.data.datasets.length; i++) {
- var meta = me.getDatasetMeta(i);
- if (me.isDatasetVisible(i)) {
- for (var j = 0; j < meta.data.length; j++) {
- if (meta.data[j].inLabelRange(eventPosition.x, eventPosition.y)) {
- return meta.data[j];
- }
- }
- }
- }
- }
- }).call(me);
+ return meta;
+ },
- if (!found) {
- return elementsArray;
- }
+ getVisibleDatasetCount: function() {
+ var count = 0;
+ for (var i = 0, ilen = this.data.datasets.length; i<ilen; ++i) {
+ if (this.isDatasetVisible(i)) {
+ count++;
+ }
+ }
+ return count;
+ },
- helpers.each(me.data.datasets, function(dataset, datasetIndex) {
- if (me.isDatasetVisible(datasetIndex)) {
- var meta = me.getDatasetMeta(datasetIndex);
- var index = helpers.findIndex(meta.data, function (it) {
- return found._model.x === it._model.x;
- });
- if(index !== -1 && !meta.data[index]._view.skip) {
- elementsArray.push(meta.data[index]);
- }
- }
- }, me);
+ isDatasetVisible: function(datasetIndex) {
+ var meta = this.getDatasetMeta(datasetIndex);
- return elementsArray;
- },
+ // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
+ // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
+ return typeof meta.hidden === 'boolean'? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
+ },
- getElementsAtEventForMode: function(e, mode) {
- var me = this;
- switch (mode) {
- case 'single':
- return me.getElementAtEvent(e);
- case 'label':
- return me.getElementsAtEvent(e);
- case 'dataset':
- return me.getDatasetAtEvent(e);
- case 'x-axis':
- return me.getElementsAtXAxis(e);
- default:
- return e;
- }
- },
+ generateLegend: function() {
+ return this.options.legendCallback(this);
+ },
- getDatasetAtEvent: function(e) {
- var elementsArray = this.getElementAtEvent(e);
+ destroy: function() {
+ var me = this;
+ var canvas = me.canvas;
+ var meta, i, ilen;
- if (elementsArray.length > 0) {
- elementsArray = this.getDatasetMeta(elementsArray[0]._datasetIndex).data;
- }
+ me.stop();
- return elementsArray;
- },
+ // dataset controllers need to cleanup associated data
+ for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ meta = me.getDatasetMeta(i);
+ if (meta.controller) {
+ meta.controller.destroy();
+ meta.controller = null;
+ }
+ }
- getDatasetMeta: function(datasetIndex) {
- var me = this;
- var dataset = me.data.datasets[datasetIndex];
- if (!dataset._meta) {
- dataset._meta = {};
- }
+ if (canvas) {
+ me.unbindEvents();
+ helpers.clear(me);
+ platform.releaseContext(me.ctx);
+ me.canvas = null;
+ me.ctx = null;
+ }
- var meta = dataset._meta[me.id];
- if (!meta) {
- meta = dataset._meta[me.id] = {
- type: null,
- data: [],
- dataset: null,
- controller: null,
- hidden: null, // See isDatasetVisible() comment
- xAxisID: null,
- yAxisID: null
- };
- }
+ plugins.notify(me, 'destroy');
- return meta;
- },
+ delete Chart.instances[me.id];
+ },
- getVisibleDatasetCount: function() {
- var count = 0;
- for (var i = 0, ilen = this.data.datasets.length; i<ilen; ++i) {
- if (this.isDatasetVisible(i)) {
- count++;
- }
- }
- return count;
- },
+ toBase64Image: function() {
+ return this.canvas.toDataURL.apply(this.canvas, arguments);
+ },
- isDatasetVisible: function(datasetIndex) {
- var meta = this.getDatasetMeta(datasetIndex);
+ initToolTip: function() {
+ var me = this;
+ me.tooltip = new Chart.Tooltip({
+ _chart: me,
+ _chartInstance: me, // deprecated, backward compatibility
+ _data: me.data,
+ _options: me.options.tooltips
+ }, me);
+ me.tooltip.initialize();
+ },
- // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
- // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
- return typeof meta.hidden === 'boolean'? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
- },
+ /**
+ * @private
+ */
+ bindEvents: function() {
+ var me = this;
+ var listeners = me._listeners = {};
+ var listener = function() {
+ me.eventHandler.apply(me, arguments);
+ };
- generateLegend: function() {
- return this.options.legendCallback(this);
- },
+ helpers.each(me.options.events, function(type) {
+ platform.addEventListener(me, type, listener);
+ listeners[type] = listener;
+ });
- destroy: function() {
- var me = this;
- me.stop();
- me.clear();
- helpers.unbindEvents(me, me.events);
- helpers.removeResizeListener(me.chart.canvas.parentNode);
+ // Responsiveness is currently based on the use of an iframe, however this method causes
+ // performance issues and could be troublesome when used with ad blockers. So make sure
+ // that the user is still able to create a chart without iframe when responsive is false.
+ // See https://github.com/chartjs/Chart.js/issues/2210
+ if (me.options.responsive) {
+ listener = function() {
+ me.resize();
+ };
- // Reset canvas height/width attributes
- var canvas = me.chart.canvas;
- canvas.width = me.chart.width;
- canvas.height = me.chart.height;
+ platform.addEventListener(me, 'resize', listener);
+ listeners.resize = listener;
+ }
+ },
- // if we scaled the canvas in response to a devicePixelRatio !== 1, we need to undo that transform here
- if (me.chart.originalDevicePixelRatio !== undefined) {
- me.chart.ctx.scale(1 / me.chart.originalDevicePixelRatio, 1 / me.chart.originalDevicePixelRatio);
- }
+ /**
+ * @private
+ */
+ unbindEvents: function() {
+ var me = this;
+ var listeners = me._listeners;
+ if (!listeners) {
+ return;
+ }
- // Reset to the old style since it may have been changed by the device pixel ratio changes
- canvas.style.width = me.chart.originalCanvasStyleWidth;
- canvas.style.height = me.chart.originalCanvasStyleHeight;
+ delete me._listeners;
+ helpers.each(listeners, function(listener, type) {
+ platform.removeEventListener(me, type, listener);
+ });
+ },
- Chart.plugins.notify('destroy', [me]);
+ updateHoverStyle: function(elements, mode, enabled) {
+ var method = enabled? 'setHoverStyle' : 'removeHoverStyle';
+ var element, i, ilen;
- delete Chart.instances[me.id];
- },
+ for (i=0, ilen=elements.length; i<ilen; ++i) {
+ element = elements[i];
+ if (element) {
+ this.getDatasetMeta(element._datasetIndex).controller[method](element);
+ }
+ }
+ },
- toBase64Image: function() {
- return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
- },
+ /**
+ * @private
+ */
+ eventHandler: function(e) {
+ var me = this;
+ var tooltip = me.tooltip;
- initToolTip: function() {
- var me = this;
- me.tooltip = new Chart.Tooltip({
- _chart: me.chart,
- _chartInstance: me,
- _data: me.data,
- _options: me.options.tooltips
- }, me);
- },
+ if (plugins.notify(me, 'beforeEvent', [e]) === false) {
+ return;
+ }
- bindEvents: function() {
- var me = this;
- helpers.bindEvents(me, me.options.events, function(evt) {
- me.eventHandler(evt);
- });
- },
+ // Buffer any update calls so that renders do not occur
+ me._bufferedRender = true;
+ me._bufferedRequest = null;
- updateHoverStyle: function(elements, mode, enabled) {
- var method = enabled? 'setHoverStyle' : 'removeHoverStyle';
- var element, i, ilen;
+ var changed = me.handleEvent(e);
+ changed |= tooltip && tooltip.handleEvent(e);
- switch (mode) {
- case 'single':
- elements = [ elements[0] ];
- break;
- case 'label':
- case 'dataset':
- case 'x-axis':
- // elements = elements;
- break;
- default:
- // unsupported mode
- return;
- }
+ plugins.notify(me, 'afterEvent', [e]);
- for (i=0, ilen=elements.length; i<ilen; ++i) {
- element = elements[i];
- if (element) {
- this.getDatasetMeta(element._datasetIndex).controller[method](element);
- }
- }
- },
+ var bufferedRequest = me._bufferedRequest;
+ if (bufferedRequest) {
+ // If we have an update that was triggered, we need to do a normal render
+ me.render(bufferedRequest.duration, bufferedRequest.lazy);
+ } else if (changed && !me.animating) {
+ // If entering, leaving, or changing elements, animate the change via pivot
+ me.stop();
- eventHandler: function eventHandler(e) {
- var me = this;
- var tooltip = me.tooltip;
- var options = me.options || {};
- var hoverOptions = options.hover;
- var tooltipsOptions = options.tooltips;
+ // We only need to render at this point. Updating will cause scales to be
+ // recomputed generating flicker & using more memory than necessary.
+ me.render(me.options.hover.animationDuration, true);
+ }
- me.lastActive = me.lastActive || [];
- me.lastTooltipActive = me.lastTooltipActive || [];
+ me._bufferedRender = false;
+ me._bufferedRequest = null;
- // Find Active Elements for hover and tooltips
- if (e.type === 'mouseout') {
- me.active = [];
- me.tooltipActive = [];
- } else {
- me.active = me.getElementsAtEventForMode(e, hoverOptions.mode);
- me.tooltipActive = me.getElementsAtEventForMode(e, tooltipsOptions.mode);
- }
+ return me;
+ },
- // On Hover hook
- if (hoverOptions.onHover) {
- hoverOptions.onHover.call(me, me.active);
- }
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event the event to handle
+ * @return {Boolean} true if the chart needs to re-render
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me.options || {};
+ var hoverOptions = options.hover;
+ var changed = false;
- if (e.type === 'mouseup' || e.type === 'click') {
- if (options.onClick) {
- options.onClick.call(me, e, me.active);
- }
- if (me.legend && me.legend.handleEvent) {
- me.legend.handleEvent(e);
- }
- }
+ me.lastActive = me.lastActive || [];
- // Remove styling for last active (even if it may still be active)
- if (me.lastActive.length) {
- me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
- }
+ // Find Active Elements for hover and tooltips
+ if (e.type === 'mouseout') {
+ me.active = [];
+ } else {
+ me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
+ }
- // Built in hover styling
- if (me.active.length && hoverOptions.mode) {
- me.updateHoverStyle(me.active, hoverOptions.mode, true);
- }
+ // On Hover hook
+ if (hoverOptions.onHover) {
+ // Need to call with native event here to not break backwards compatibility
+ hoverOptions.onHover.call(me, e.native, me.active);
+ }
- // Built in Tooltips
- if (tooltipsOptions.enabled || tooltipsOptions.custom) {
- tooltip.initialize();
- tooltip._active = me.tooltipActive;
- tooltip.update(true);
- }
+ if (e.type === 'mouseup' || e.type === 'click') {
+ if (options.onClick) {
+ // Use e.native here for backwards compatibility
+ options.onClick.call(me, e.native, me.active);
+ }
+ }
- // Hover animations
- tooltip.pivot();
+ // Remove styling for last active (even if it may still be active)
+ if (me.lastActive.length) {
+ me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
+ }
- if (!me.animating) {
- // If entering, leaving, or changing elements, animate the change via pivot
- if (!helpers.arrayEquals(me.active, me.lastActive) ||
- !helpers.arrayEquals(me.tooltipActive, me.lastTooltipActive)) {
+ // Built in hover styling
+ if (me.active.length && hoverOptions.mode) {
+ me.updateHoverStyle(me.active, hoverOptions.mode, true);
+ }
- me.stop();
+ changed = !helpers.arrayEquals(me.active, me.lastActive);
- if (tooltipsOptions.enabled || tooltipsOptions.custom) {
- tooltip.update(true);
- }
+ // Remember Last Actives
+ me.lastActive = me.active;
- // We only need to render at this point. Updating will cause scales to be
- // recomputed generating flicker & using more memory than necessary.
- me.render(hoverOptions.animationDuration, true);
- }
- }
+ return changed;
+ }
+ });
- // Remember Last Actives
- me.lastActive = me.active;
- me.lastTooltipActive = me.tooltipActive;
- return me;
- }
- });
-};
+ /**
+ * Provided for backward compatibility, use Chart instead.
+ * @class Chart.Controller
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+ Chart.Controller = Chart;
+ };
},{}],24:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
- var noop = helpers.noop;
+ var helpers = Chart.helpers;
- // Base class for all dataset controllers (line, bar, etc)
- Chart.DatasetController = function(chart, datasetIndex) {
- this.initialize.call(this, chart, datasetIndex);
- };
+ var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
- helpers.extend(Chart.DatasetController.prototype, {
+ /**
+ * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
+ * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
+ * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
+ */
+ function listenArrayEvents(array, listener) {
+ if (array._chartjs) {
+ array._chartjs.listeners.push(listener);
+ return;
+ }
- /**
- * Element type used to generate a meta dataset (e.g. Chart.element.Line).
- * @type {Chart.core.element}
- */
- datasetElementType: null,
+ Object.defineProperty(array, '_chartjs', {
+ configurable: true,
+ enumerable: false,
+ value: {
+ listeners: [listener]
+ }
+ });
- /**
- * Element type used to generate a meta data (e.g. Chart.element.Point).
- * @type {Chart.core.element}
- */
- dataElementType: null,
+ arrayEvents.forEach(function(key) {
+ var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
+ var base = array[key];
- initialize: function(chart, datasetIndex) {
- var me = this;
- me.chart = chart;
- me.index = datasetIndex;
- me.linkScales();
- me.addElements();
- },
+ Object.defineProperty(array, key, {
+ configurable: true,
+ enumerable: false,
+ value: function() {
+ var args = Array.prototype.slice.call(arguments);
+ var res = base.apply(this, args);
- updateIndex: function(datasetIndex) {
- this.index = datasetIndex;
- },
+ helpers.each(array._chartjs.listeners, function(object) {
+ if (typeof object[method] === 'function') {
+ object[method].apply(object, args);
+ }
+ });
- linkScales: function() {
- var me = this;
- var meta = me.getMeta();
- var dataset = me.getDataset();
+ return res;
+ }
+ });
+ });
+ }
- if (meta.xAxisID === null) {
- meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
- }
- if (meta.yAxisID === null) {
- meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
- }
- },
+ /**
+ * Removes the given array event listener and cleanup extra attached properties (such as
+ * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
+ */
+ function unlistenArrayEvents(array, listener) {
+ var stub = array._chartjs;
+ if (!stub) {
+ return;
+ }
- getDataset: function() {
- return this.chart.data.datasets[this.index];
- },
+ var listeners = stub.listeners;
+ var index = listeners.indexOf(listener);
+ if (index !== -1) {
+ listeners.splice(index, 1);
+ }
- getMeta: function() {
- return this.chart.getDatasetMeta(this.index);
- },
+ if (listeners.length > 0) {
+ return;
+ }
- getScaleForId: function(scaleID) {
- return this.chart.scales[scaleID];
- },
+ arrayEvents.forEach(function(key) {
+ delete array[key];
+ });
- reset: function() {
- this.update(true);
- },
+ delete array._chartjs;
+ }
- createMetaDataset: function() {
- var me = this;
- var type = me.datasetElementType;
- return type && new type({
- _chart: me.chart.chart,
- _datasetIndex: me.index
- });
- },
+ // Base class for all dataset controllers (line, bar, etc)
+ Chart.DatasetController = function(chart, datasetIndex) {
+ this.initialize(chart, datasetIndex);
+ };
- createMetaData: function(index) {
- var me = this;
- var type = me.dataElementType;
- return type && new type({
- _chart: me.chart.chart,
- _datasetIndex: me.index,
- _index: index
- });
- },
+ helpers.extend(Chart.DatasetController.prototype, {
- addElements: function() {
- var me = this;
- var meta = me.getMeta();
- var data = me.getDataset().data || [];
- var metaData = meta.data;
- var i, ilen;
+ /**
+ * Element type used to generate a meta dataset (e.g. Chart.element.Line).
+ * @type {Chart.core.element}
+ */
+ datasetElementType: null,
- for (i=0, ilen=data.length; i<ilen; ++i) {
- metaData[i] = metaData[i] || me.createMetaData(meta, i);
- }
+ /**
+ * Element type used to generate a meta data (e.g. Chart.element.Point).
+ * @type {Chart.core.element}
+ */
+ dataElementType: null,
- meta.dataset = meta.dataset || me.createMetaDataset();
- },
+ initialize: function(chart, datasetIndex) {
+ var me = this;
+ me.chart = chart;
+ me.index = datasetIndex;
+ me.linkScales();
+ me.addElements();
+ },
- addElementAndReset: function(index) {
- var me = this;
- var element = me.createMetaData(index);
- me.getMeta().data.splice(index, 0, element);
- me.updateElement(element, index, true);
- },
+ updateIndex: function(datasetIndex) {
+ this.index = datasetIndex;
+ },
- buildOrUpdateElements: function() {
- // Handle the number of data points changing
- var meta = this.getMeta(),
- md = meta.data,
- numData = this.getDataset().data.length,
- numMetaData = md.length;
+ linkScales: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
- // Make sure that we handle number of datapoints changing
- if (numData < numMetaData) {
- // Remove excess bars for data points that have been removed
- md.splice(numData, numMetaData - numData);
- } else if (numData > numMetaData) {
- // Add new elements
- for (var index = numMetaData; index < numData; ++index) {
- this.addElementAndReset(index);
- }
- }
- },
+ if (meta.xAxisID === null) {
+ meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
+ }
+ if (meta.yAxisID === null) {
+ meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
+ }
+ },
- update: noop,
+ getDataset: function() {
+ return this.chart.data.datasets[this.index];
+ },
- draw: function(ease) {
- var easingDecimal = ease || 1;
- helpers.each(this.getMeta().data, function(element) {
- element.transition(easingDecimal).draw();
- });
- },
+ getMeta: function() {
+ return this.chart.getDatasetMeta(this.index);
+ },
- removeHoverStyle: function(element, elementOpts) {
- var dataset = this.chart.data.datasets[element._datasetIndex],
- index = element._index,
- custom = element.custom || {},
- valueOrDefault = helpers.getValueAtIndexOrDefault,
- model = element._model;
+ getScaleForId: function(scaleID) {
+ return this.chart.scales[scaleID];
+ },
- model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
- model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
- model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
- },
+ reset: function() {
+ this.update(true);
+ },
- setHoverStyle: function(element) {
- var dataset = this.chart.data.datasets[element._datasetIndex],
- index = element._index,
- custom = element.custom || {},
- valueOrDefault = helpers.getValueAtIndexOrDefault,
- getHoverColor = helpers.getHoverColor,
- model = element._model;
+ /**
+ * @private
+ */
+ destroy: function() {
+ if (this._data) {
+ unlistenArrayEvents(this._data, this);
+ }
+ },
- model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
- model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
- model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
- }
-
- });
-
+ createMetaDataset: function() {
+ var me = this;
+ var type = me.datasetElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index
+ });
+ },
- Chart.DatasetController.extend = helpers.inherits;
-};
+ createMetaData: function(index) {
+ var me = this;
+ var type = me.dataElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index,
+ _index: index
+ });
+ },
+
+ addElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data || [];
+ var metaData = meta.data;
+ var i, ilen;
+
+ for (i=0, ilen=data.length; i<ilen; ++i) {
+ metaData[i] = metaData[i] || me.createMetaData(i);
+ }
+
+ meta.dataset = meta.dataset || me.createMetaDataset();
+ },
+
+ addElementAndReset: function(index) {
+ var element = this.createMetaData(index);
+ this.getMeta().data.splice(index, 0, element);
+ this.updateElement(element, index, true);
+ },
+
+ buildOrUpdateElements: function() {
+ var me = this;
+ var dataset = me.getDataset();
+ var data = dataset.data || (dataset.data = []);
+
+ // In order to correctly handle data addition/deletion animation (an thus simulate
+ // real-time charts), we need to monitor these data modifications and synchronize
+ // the internal meta data accordingly.
+ if (me._data !== data) {
+ if (me._data) {
+ // This case happens when the user replaced the data array instance.
+ unlistenArrayEvents(me._data, me);
+ }
+
+ listenArrayEvents(data, me);
+ me._data = data;
+ }
+
+ // Re-sync meta data in case the user replaced the data array or if we missed
+ // any updates and so make sure that we handle number of datapoints changing.
+ me.resyncElements();
+ },
+
+ update: helpers.noop,
+
+ transition: function(easingValue) {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ for (; i<ilen; ++i) {
+ elements[i].transition(easingValue);
+ }
+
+ if (meta.dataset) {
+ meta.dataset.transition(easingValue);
+ }
+ },
+
+ draw: function() {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ if (meta.dataset) {
+ meta.dataset.draw();
+ }
+
+ for (; i<ilen; ++i) {
+ elements[i].draw();
+ }
+ },
+
+ removeHoverStyle: function(element, elementOpts) {
+ var dataset = this.chart.data.datasets[element._datasetIndex],
+ index = element._index,
+ custom = element.custom || {},
+ valueOrDefault = helpers.getValueAtIndexOrDefault,
+ model = element._model;
+
+ model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
+ model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
+ model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
+ },
+
+ setHoverStyle: function(element) {
+ var dataset = this.chart.data.datasets[element._datasetIndex],
+ index = element._index,
+ custom = element.custom || {},
+ valueOrDefault = helpers.getValueAtIndexOrDefault,
+ getHoverColor = helpers.getHoverColor,
+ model = element._model;
+
+ model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
+ model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
+ model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ resyncElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data;
+ var numMeta = meta.data.length;
+ var numData = data.length;
+
+ if (numData < numMeta) {
+ meta.data.splice(numData, numMeta - numData);
+ } else if (numData > numMeta) {
+ me.insertElements(numMeta, numData - numMeta);
+ }
+ },
+
+ /**
+ * @private
+ */
+ insertElements: function(start, count) {
+ for (var i=0; i<count; ++i) {
+ this.addElementAndReset(start + i);
+ }
+ },
+
+ /**
+ * @private
+ */
+ onDataPush: function() {
+ this.insertElements(this.getDataset().data.length-1, arguments.length);
+ },
+
+ /**
+ * @private
+ */
+ onDataPop: function() {
+ this.getMeta().data.pop();
+ },
+
+ /**
+ * @private
+ */
+ onDataShift: function() {
+ this.getMeta().data.shift();
+ },
+
+ /**
+ * @private
+ */
+ onDataSplice: function(start, count) {
+ this.getMeta().data.splice(start, count);
+ this.insertElements(start, arguments.length - 2);
+ },
+
+ /**
+ * @private
+ */
+ onDataUnshift: function() {
+ this.insertElements(0, arguments.length);
+ }
+ });
+
+ Chart.DatasetController.extend = helpers.inherits;
+ };
+
},{}],25:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ var color = require(3);
- var helpers = Chart.helpers;
+ module.exports = function(Chart) {
- Chart.elements = {};
+ var helpers = Chart.helpers;
- Chart.Element = function(configuration) {
- helpers.extend(this, configuration);
- this.initialize.apply(this, arguments);
- };
+ function interpolate(start, view, model, ease) {
+ var keys = Object.keys(model);
+ var i, ilen, key, actual, origin, target, type, c0, c1;
- helpers.extend(Chart.Element.prototype, {
+ for (i=0, ilen=keys.length; i<ilen; ++i) {
+ key = keys[i];
- initialize: function() {
- this.hidden = false;
- },
+ target = model[key];
- pivot: function() {
- var me = this;
- if (!me._view) {
- me._view = helpers.clone(me._model);
- }
- me._start = helpers.clone(me._view);
- return me;
- },
+ // if a value is added to the model after pivot() has been called, the view
+ // doesn't contain it, so let's initialize the view to the target value.
+ if (!view.hasOwnProperty(key)) {
+ view[key] = target;
+ }
- transition: function(ease) {
- var me = this;
-
- if (!me._view) {
- me._view = helpers.clone(me._model);
- }
+ actual = view[key];
- // No animation -> No Transition
- if (ease === 1) {
- me._view = me._model;
- me._start = null;
- return me;
- }
+ if (actual === target || key[0] === '_') {
+ continue;
+ }
- if (!me._start) {
- me.pivot();
- }
+ if (!start.hasOwnProperty(key)) {
+ start[key] = actual;
+ }
- helpers.each(me._model, function(value, key) {
+ origin = start[key];
- if (key[0] === '_') {
- // Only non-underscored properties
+ type = typeof(target);
+
+ if (type === typeof(origin)) {
+ if (type === 'string') {
+ c0 = color(origin);
+ if (c0.valid) {
+ c1 = color(target);
+ if (c1.valid) {
+ view[key] = c1.mix(c0, ease).rgbString();
+ continue;
+ }
+ }
+ } else if (type === 'number' && isFinite(origin) && isFinite(target)) {
+ view[key] = origin + (target - origin) * ease;
+ continue;
+ }
+ }
+
+ view[key] = target;
+ }
}
- // Init if doesn't exist
- else if (!me._view.hasOwnProperty(key)) {
- if (typeof value === 'number' && !isNaN(me._view[key])) {
- me._view[key] = value * ease;
- } else {
- me._view[key] = value;
- }
+ Chart.elements = {};
+
+ Chart.Element = function(configuration) {
+ helpers.extend(this, configuration);
+ this.initialize.apply(this, arguments);
+ };
+
+ helpers.extend(Chart.Element.prototype, {
+
+ initialize: function() {
+ this.hidden = false;
+ },
+
+ pivot: function() {
+ var me = this;
+ if (!me._view) {
+ me._view = helpers.clone(me._model);
+ }
+ me._start = {};
+ return me;
+ },
+
+ transition: function(ease) {
+ var me = this;
+ var model = me._model;
+ var start = me._start;
+ var view = me._view;
+
+ // No animation -> No Transition
+ if (!model || ease === 1) {
+ me._view = model;
+ me._start = null;
+ return me;
+ }
+
+ if (!view) {
+ view = me._view = {};
+ }
+
+ if (!start) {
+ start = me._start = {};
+ }
+
+ interpolate(start, view, model, ease);
+
+ return me;
+ },
+
+ tooltipPosition: function() {
+ return {
+ x: this._model.x,
+ y: this._model.y
+ };
+ },
+
+ hasValue: function() {
+ return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
+ }
+ });
+
+ Chart.Element.extend = helpers.inherits;
+ };
+
+},{"3":3}],26:[function(require,module,exports){
+ /* global window: false */
+ /* global document: false */
+ 'use strict';
+
+ var color = require(3);
+
+ module.exports = function(Chart) {
+ // Global Chart helpers object for utility methods and classes
+ var helpers = Chart.helpers = {};
+
+ // -- Basic js utility methods
+ helpers.each = function(loopable, callback, self, reverse) {
+ // Check to see if null or undefined firstly.
+ var i, len;
+ if (helpers.isArray(loopable)) {
+ len = loopable.length;
+ if (reverse) {
+ for (i = len - 1; i >= 0; i--) {
+ callback.call(self, loopable[i], i);
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ callback.call(self, loopable[i], i);
+ }
+ }
+ } else if (typeof loopable === 'object') {
+ var keys = Object.keys(loopable);
+ len = keys.length;
+ for (i = 0; i < len; i++) {
+ callback.call(self, loopable[keys[i]], keys[i]);
+ }
+ }
+ };
+ helpers.clone = function(obj) {
+ var objClone = {};
+ helpers.each(obj, function(value, key) {
+ if (helpers.isArray(value)) {
+ objClone[key] = value.slice(0);
+ } else if (typeof value === 'object' && value !== null) {
+ objClone[key] = helpers.clone(value);
+ } else {
+ objClone[key] = value;
+ }
+ });
+ return objClone;
+ };
+ helpers.extend = function(base) {
+ var setFn = function(value, key) {
+ base[key] = value;
+ };
+ for (var i = 1, ilen = arguments.length; i < ilen; i++) {
+ helpers.each(arguments[i], setFn);
+ }
+ return base;
+ };
+ // Need a special merge function to chart configs since they are now grouped
+ helpers.configMerge = function(_base) {
+ var base = helpers.clone(_base);
+ helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) {
+ helpers.each(extension, function(value, key) {
+ var baseHasProperty = base.hasOwnProperty(key);
+ var baseVal = baseHasProperty ? base[key] : {};
+
+ if (key === 'scales') {
+ // Scale config merging is complex. Add our own function here for that
+ base[key] = helpers.scaleMerge(baseVal, value);
+ } else if (key === 'scale') {
+ // Used in polar area & radar charts since there is only one scale
+ base[key] = helpers.configMerge(baseVal, Chart.scaleService.getScaleDefaults(value.type), value);
+ } else if (baseHasProperty
+ && typeof baseVal === 'object'
+ && !helpers.isArray(baseVal)
+ && baseVal !== null
+ && typeof value === 'object'
+ && !helpers.isArray(value)) {
+ // If we are overwriting an object with an object, do a merge of the properties.
+ base[key] = helpers.configMerge(baseVal, value);
+ } else {
+ // can just overwrite the value in this case
+ base[key] = value;
+ }
+ });
+ });
+
+ return base;
+ };
+ helpers.scaleMerge = function(_base, extension) {
+ var base = helpers.clone(_base);
+
+ helpers.each(extension, function(value, key) {
+ if (key === 'xAxes' || key === 'yAxes') {
+ // These properties are arrays of items
+ if (base.hasOwnProperty(key)) {
+ helpers.each(value, function(valueObj, index) {
+ var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
+ var axisDefaults = Chart.scaleService.getScaleDefaults(axisType);
+ if (index >= base[key].length || !base[key][index].type) {
+ base[key].push(helpers.configMerge(axisDefaults, valueObj));
+ } else if (valueObj.type && valueObj.type !== base[key][index].type) {
+ // Type changed. Bring in the new defaults before we bring in valueObj so that valueObj can override the correct scale defaults
+ base[key][index] = helpers.configMerge(base[key][index], axisDefaults, valueObj);
+ } else {
+ // Type is the same
+ base[key][index] = helpers.configMerge(base[key][index], valueObj);
+ }
+ });
+ } else {
+ base[key] = [];
+ helpers.each(value, function(valueObj) {
+ var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
+ base[key].push(helpers.configMerge(Chart.scaleService.getScaleDefaults(axisType), valueObj));
+ });
+ }
+ } else if (base.hasOwnProperty(key) && typeof base[key] === 'object' && base[key] !== null && typeof value === 'object') {
+ // If we are overwriting an object with an object, do a merge of the properties.
+ base[key] = helpers.configMerge(base[key], value);
+
+ } else {
+ // can just overwrite the value in this case
+ base[key] = value;
+ }
+ });
+
+ return base;
+ };
+ helpers.getValueAtIndexOrDefault = function(value, index, defaultValue) {
+ if (value === undefined || value === null) {
+ return defaultValue;
+ }
+
+ if (helpers.isArray(value)) {
+ return index < value.length ? value[index] : defaultValue;
+ }
+
+ return value;
+ };
+ helpers.getValueOrDefault = function(value, defaultValue) {
+ return value === undefined ? defaultValue : value;
+ };
+ helpers.indexOf = Array.prototype.indexOf?
+ function(array, item) {
+ return array.indexOf(item);
+ }:
+ function(array, item) {
+ for (var i = 0, ilen = array.length; i < ilen; ++i) {
+ if (array[i] === item) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ helpers.where = function(collection, filterCallback) {
+ if (helpers.isArray(collection) && Array.prototype.filter) {
+ return collection.filter(filterCallback);
+ }
+ var filtered = [];
+
+ helpers.each(collection, function(item) {
+ if (filterCallback(item)) {
+ filtered.push(item);
+ }
+ });
+
+ return filtered;
+ };
+ helpers.findIndex = Array.prototype.findIndex?
+ function(array, callback, scope) {
+ return array.findIndex(callback, scope);
+ } :
+ function(array, callback, scope) {
+ scope = scope === undefined? array : scope;
+ for (var i = 0, ilen = array.length; i < ilen; ++i) {
+ if (callback.call(scope, array[i], i, array)) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to start of the array
+ if (startIndex === undefined || startIndex === null) {
+ startIndex = -1;
+ }
+ for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+ helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to end of the array
+ if (startIndex === undefined || startIndex === null) {
+ startIndex = arrayToSearch.length;
+ }
+ for (var i = startIndex - 1; i >= 0; i--) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+ helpers.inherits = function(extensions) {
+ // Basic javascript inheritance based on the model created in Backbone.js
+ var me = this;
+ var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
+ return me.apply(this, arguments);
+ };
+
+ var Surrogate = function() {
+ this.constructor = ChartElement;
+ };
+ Surrogate.prototype = me.prototype;
+ ChartElement.prototype = new Surrogate();
+
+ ChartElement.extend = helpers.inherits;
+
+ if (extensions) {
+ helpers.extend(ChartElement.prototype, extensions);
+ }
+
+ ChartElement.__super__ = me.prototype;
+
+ return ChartElement;
+ };
+ helpers.noop = function() {};
+ helpers.uid = (function() {
+ var id = 0;
+ return function() {
+ return id++;
+ };
+ }());
+ // -- Math methods
+ helpers.isNumber = function(n) {
+ return !isNaN(parseFloat(n)) && isFinite(n);
+ };
+ helpers.almostEquals = function(x, y, epsilon) {
+ return Math.abs(x - y) < epsilon;
+ };
+ helpers.almostWhole = function(x, epsilon) {
+ var rounded = Math.round(x);
+ return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
+ };
+ helpers.max = function(array) {
+ return array.reduce(function(max, value) {
+ if (!isNaN(value)) {
+ return Math.max(max, value);
+ }
+ return max;
+ }, Number.NEGATIVE_INFINITY);
+ };
+ helpers.min = function(array) {
+ return array.reduce(function(min, value) {
+ if (!isNaN(value)) {
+ return Math.min(min, value);
+ }
+ return min;
+ }, Number.POSITIVE_INFINITY);
+ };
+ helpers.sign = Math.sign?
+ function(x) {
+ return Math.sign(x);
+ } :
+ function(x) {
+ x = +x; // convert to a number
+ if (x === 0 || isNaN(x)) {
+ return x;
+ }
+ return x > 0 ? 1 : -1;
+ };
+ helpers.log10 = Math.log10?
+ function(x) {
+ return Math.log10(x);
+ } :
+ function(x) {
+ return Math.log(x) / Math.LN10;
+ };
+ helpers.toRadians = function(degrees) {
+ return degrees * (Math.PI / 180);
+ };
+ helpers.toDegrees = function(radians) {
+ return radians * (180 / Math.PI);
+ };
+ // Gets the angle from vertical upright to the point about a centre.
+ helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
+ var distanceFromXCenter = anglePoint.x - centrePoint.x,
+ distanceFromYCenter = anglePoint.y - centrePoint.y,
+ radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
+
+ var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ if (angle < (-0.5 * Math.PI)) {
+ angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
+ }
+
+ return {
+ angle: angle,
+ distance: radialDistanceFromCenter
+ };
+ };
+ helpers.distanceBetweenPoints = function(pt1, pt2) {
+ return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
+ };
+ helpers.aliasPixel = function(pixelWidth) {
+ return (pixelWidth % 2 === 0) ? 0 : 0.5;
+ };
+ helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
+ // Props to Rob Spencer at scaled innovation for his post on splining between points
+ // http://scaledinnovation.com/analytics/splines/aboutSplines.html
+
+ // This function must also respect "skipped" points
+
+ var previous = firstPoint.skip ? middlePoint : firstPoint,
+ current = middlePoint,
+ next = afterPoint.skip ? middlePoint : afterPoint;
+
+ var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
+ var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
+
+ var s01 = d01 / (d01 + d12);
+ var s12 = d12 / (d01 + d12);
+
+ // If all points are the same, s01 & s02 will be inf
+ s01 = isNaN(s01) ? 0 : s01;
+ s12 = isNaN(s12) ? 0 : s12;
+
+ var fa = t * s01; // scaling factor for triangle Ta
+ var fb = t * s12;
+
+ return {
+ previous: {
+ x: current.x - fa * (next.x - previous.x),
+ y: current.y - fa * (next.y - previous.y)
+ },
+ next: {
+ x: current.x + fb * (next.x - previous.x),
+ y: current.y + fb * (next.y - previous.y)
+ }
+ };
+ };
+ helpers.EPSILON = Number.EPSILON || 1e-14;
+ helpers.splineCurveMonotone = function(points) {
+ // This function calculates Bézier control points in a similar way than |splineCurve|,
+ // but preserves monotonicity of the provided data and ensures no local extremums are added
+ // between the dataset discrete points due to the interpolation.
+ // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+
+ var pointsWithTangents = (points || []).map(function(point) {
+ return {
+ model: point._model,
+ deltaK: 0,
+ mK: 0
+ };
+ });
+
+ // Calculate slopes (deltaK) and initialize tangents (mK)
+ var pointsLen = pointsWithTangents.length;
+ var i, pointBefore, pointCurrent, pointAfter;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointAfter && !pointAfter.model.skip) {
+ var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
+
+ // In the case of two points that appear at the same x pixel, slopeDeltaX is 0
+ pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
+ }
+
+ if (!pointBefore || pointBefore.model.skip) {
+ pointCurrent.mK = pointCurrent.deltaK;
+ } else if (!pointAfter || pointAfter.model.skip) {
+ pointCurrent.mK = pointBefore.deltaK;
+ } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
+ pointCurrent.mK = 0;
+ } else {
+ pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
+ }
+ }
+
+ // Adjust tangents to ensure monotonic properties
+ var alphaK, betaK, tauK, squaredMagnitude;
+ for (i = 0; i < pointsLen - 1; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ pointAfter = pointsWithTangents[i + 1];
+ if (pointCurrent.model.skip || pointAfter.model.skip) {
+ continue;
+ }
+
+ if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
+ pointCurrent.mK = pointAfter.mK = 0;
+ continue;
+ }
+
+ alphaK = pointCurrent.mK / pointCurrent.deltaK;
+ betaK = pointAfter.mK / pointCurrent.deltaK;
+ squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
+ if (squaredMagnitude <= 9) {
+ continue;
+ }
+
+ tauK = 3 / Math.sqrt(squaredMagnitude);
+ pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
+ pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
+ }
+
+ // Compute control points
+ var deltaX;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointBefore && !pointBefore.model.skip) {
+ deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
+ pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
+ pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
+ }
+ if (pointAfter && !pointAfter.model.skip) {
+ deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
+ pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
+ pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
+ }
+ }
+ };
+ helpers.nextItem = function(collection, index, loop) {
+ if (loop) {
+ return index >= collection.length - 1 ? collection[0] : collection[index + 1];
+ }
+ return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
+ };
+ helpers.previousItem = function(collection, index, loop) {
+ if (loop) {
+ return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
+ }
+ return index <= 0 ? collection[0] : collection[index - 1];
+ };
+ // Implementation of the nice number algorithm used in determining where axis labels will go
+ helpers.niceNum = function(range, round) {
+ var exponent = Math.floor(helpers.log10(range));
+ var fraction = range / Math.pow(10, exponent);
+ var niceFraction;
+
+ if (round) {
+ if (fraction < 1.5) {
+ niceFraction = 1;
+ } else if (fraction < 3) {
+ niceFraction = 2;
+ } else if (fraction < 7) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+ } else if (fraction <= 1.0) {
+ niceFraction = 1;
+ } else if (fraction <= 2) {
+ niceFraction = 2;
+ } else if (fraction <= 5) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+
+ return niceFraction * Math.pow(10, exponent);
+ };
+ // Easing functions adapted from Robert Penner's easing equations
+ // http://www.robertpenner.com/easing/
+ var easingEffects = helpers.easingEffects = {
+ linear: function(t) {
+ return t;
+ },
+ easeInQuad: function(t) {
+ return t * t;
+ },
+ easeOutQuad: function(t) {
+ return -1 * t * (t - 2);
+ },
+ easeInOutQuad: function(t) {
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * t * t;
+ }
+ return -1 / 2 * ((--t) * (t - 2) - 1);
+ },
+ easeInCubic: function(t) {
+ return t * t * t;
+ },
+ easeOutCubic: function(t) {
+ return 1 * ((t = t / 1 - 1) * t * t + 1);
+ },
+ easeInOutCubic: function(t) {
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * t * t * t;
+ }
+ return 1 / 2 * ((t -= 2) * t * t + 2);
+ },
+ easeInQuart: function(t) {
+ return t * t * t * t;
+ },
+ easeOutQuart: function(t) {
+ return -1 * ((t = t / 1 - 1) * t * t * t - 1);
+ },
+ easeInOutQuart: function(t) {
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * t * t * t * t;
+ }
+ return -1 / 2 * ((t -= 2) * t * t * t - 2);
+ },
+ easeInQuint: function(t) {
+ return 1 * (t /= 1) * t * t * t * t;
+ },
+ easeOutQuint: function(t) {
+ return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
+ },
+ easeInOutQuint: function(t) {
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * t * t * t * t * t;
+ }
+ return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
+ },
+ easeInSine: function(t) {
+ return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
+ },
+ easeOutSine: function(t) {
+ return 1 * Math.sin(t / 1 * (Math.PI / 2));
+ },
+ easeInOutSine: function(t) {
+ return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
+ },
+ easeInExpo: function(t) {
+ return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
+ },
+ easeOutExpo: function(t) {
+ return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
+ },
+ easeInOutExpo: function(t) {
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * Math.pow(2, 10 * (t - 1));
+ }
+ return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
+ },
+ easeInCirc: function(t) {
+ if (t >= 1) {
+ return t;
+ }
+ return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
+ },
+ easeOutCirc: function(t) {
+ return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
+ },
+ easeInOutCirc: function(t) {
+ if ((t /= 1 / 2) < 1) {
+ return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
+ }
+ return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
+ },
+ easeInElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if ((t /= 1) === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 1 * 0.3;
+ }
+ if (a < Math.abs(1)) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
+ },
+ easeOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if ((t /= 1) === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 1 * 0.3;
+ }
+ if (a < Math.abs(1)) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
+ },
+ easeInOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if ((t /= 1 / 2) === 2) {
+ return 1;
+ }
+ if (!p) {
+ p = 1 * (0.3 * 1.5);
+ }
+ if (a < Math.abs(1)) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ if (t < 1) {
+ return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
+ }
+ return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
+ },
+ easeInBack: function(t) {
+ var s = 1.70158;
+ return 1 * (t /= 1) * t * ((s + 1) * t - s);
+ },
+ easeOutBack: function(t) {
+ var s = 1.70158;
+ return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
+ },
+ easeInOutBack: function(t) {
+ var s = 1.70158;
+ if ((t /= 1 / 2) < 1) {
+ return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
+ }
+ return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
+ },
+ easeInBounce: function(t) {
+ return 1 - easingEffects.easeOutBounce(1 - t);
+ },
+ easeOutBounce: function(t) {
+ if ((t /= 1) < (1 / 2.75)) {
+ return 1 * (7.5625 * t * t);
+ } else if (t < (2 / 2.75)) {
+ return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
+ } else if (t < (2.5 / 2.75)) {
+ return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
+ }
+ return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
+ },
+ easeInOutBounce: function(t) {
+ if (t < 1 / 2) {
+ return easingEffects.easeInBounce(t * 2) * 0.5;
+ }
+ return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
+ }
+ };
+ // Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
+ helpers.requestAnimFrame = (function() {
+ if (typeof window === 'undefined') {
+ return function(callback) {
+ callback();
+ };
+ }
+ return window.requestAnimationFrame ||
+ window.webkitRequestAnimationFrame ||
+ window.mozRequestAnimationFrame ||
+ window.oRequestAnimationFrame ||
+ window.msRequestAnimationFrame ||
+ function(callback) {
+ return window.setTimeout(callback, 1000 / 60);
+ };
+ }());
+ // -- DOM methods
+ helpers.getRelativePosition = function(evt, chart) {
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt,
+ canvas = evt.currentTarget || evt.srcElement,
+ boundingRect = canvas.getBoundingClientRect();
+
+ var touches = e.touches;
+ if (touches && touches.length > 0) {
+ mouseX = touches[0].clientX;
+ mouseY = touches[0].clientY;
+
+ } else {
+ mouseX = e.clientX;
+ mouseY = e.clientY;
+ }
+
+ // Scale mouse coordinates into canvas coordinates
+ // by following the pattern laid out by 'jerryj' in the comments of
+ // http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
+ var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
+ var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
+ var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
+ var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
+ var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
+ var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
+
+ // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
+ // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
+ mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
+ mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
+
+ return {
+ x: mouseX,
+ y: mouseY
+ };
+
+ };
+ helpers.addEvent = function(node, eventType, method) {
+ if (node.addEventListener) {
+ node.addEventListener(eventType, method);
+ } else if (node.attachEvent) {
+ node.attachEvent('on' + eventType, method);
+ } else {
+ node['on' + eventType] = method;
+ }
+ };
+ helpers.removeEvent = function(node, eventType, handler) {
+ if (node.removeEventListener) {
+ node.removeEventListener(eventType, handler, false);
+ } else if (node.detachEvent) {
+ node.detachEvent('on' + eventType, handler);
+ } else {
+ node['on' + eventType] = helpers.noop;
+ }
+ };
+
+ // Private helper function to convert max-width/max-height values that may be percentages into a number
+ function parseMaxStyle(styleValue, node, parentProperty) {
+ var valueInPixels;
+ if (typeof(styleValue) === 'string') {
+ valueInPixels = parseInt(styleValue, 10);
+
+ if (styleValue.indexOf('%') !== -1) {
+ // percentage * size in dimension
+ valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
+ }
+ } else {
+ valueInPixels = styleValue;
+ }
+
+ return valueInPixels;
}
- // No unnecessary computations
- else if (value === me._view[key]) {
- // It's the same! Woohoo!
+ /**
+ * Returns if the given value contains an effective constraint.
+ * @private
+ */
+ function isConstrainedValue(value) {
+ return value !== undefined && value !== null && value !== 'none';
}
- // Color transitions if possible
- else if (typeof value === 'string') {
- try {
- var color = helpers.color(me._model[key]).mix(helpers.color(me._start[key]), ease);
- me._view[key] = color.rgbString();
- } catch (err) {
- me._view[key] = value;
- }
+ // Private helper to get a constraint dimension
+ // @param domNode : the node to check the constraint on
+ // @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
+ // @param percentageProperty : property of parent to use when calculating width as a percentage
+ // @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
+ function getConstraintDimension(domNode, maxStyle, percentageProperty) {
+ var view = document.defaultView;
+ var parentNode = domNode.parentNode;
+ var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
+ var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
+ var hasCNode = isConstrainedValue(constrainedNode);
+ var hasCContainer = isConstrainedValue(constrainedContainer);
+ var infinity = Number.POSITIVE_INFINITY;
+
+ if (hasCNode || hasCContainer) {
+ return Math.min(
+ hasCNode? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
+ hasCContainer? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
+ }
+
+ return 'none';
}
- // Number transitions
- else if (typeof value === 'number') {
- var startVal = me._start[key] !== undefined && isNaN(me._start[key]) === false ? me._start[key] : 0;
- me._view[key] = ((me._model[key] - startVal) * ease) + startVal;
- }
- // Everything else
- else {
- me._view[key] = value;
- }
- }, me);
+ // returns Number or undefined if no constraint
+ helpers.getConstraintWidth = function(domNode) {
+ return getConstraintDimension(domNode, 'max-width', 'clientWidth');
+ };
+ // returns Number or undefined if no constraint
+ helpers.getConstraintHeight = function(domNode) {
+ return getConstraintDimension(domNode, 'max-height', 'clientHeight');
+ };
+ helpers.getMaximumWidth = function(domNode) {
+ var container = domNode.parentNode;
+ var paddingLeft = parseInt(helpers.getStyle(container, 'padding-left'), 10);
+ var paddingRight = parseInt(helpers.getStyle(container, 'padding-right'), 10);
+ var w = container.clientWidth - paddingLeft - paddingRight;
+ var cw = helpers.getConstraintWidth(domNode);
+ return isNaN(cw)? w : Math.min(w, cw);
+ };
+ helpers.getMaximumHeight = function(domNode) {
+ var container = domNode.parentNode;
+ var paddingTop = parseInt(helpers.getStyle(container, 'padding-top'), 10);
+ var paddingBottom = parseInt(helpers.getStyle(container, 'padding-bottom'), 10);
+ var h = container.clientHeight - paddingTop - paddingBottom;
+ var ch = helpers.getConstraintHeight(domNode);
+ return isNaN(ch)? h : Math.min(h, ch);
+ };
+ helpers.getStyle = function(el, property) {
+ return el.currentStyle ?
+ el.currentStyle[property] :
+ document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
+ };
+ helpers.retinaScale = function(chart) {
+ var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
+ if (pixelRatio === 1) {
+ return;
+ }
- return me;
- },
+ var canvas = chart.canvas;
+ var height = chart.height;
+ var width = chart.width;
- tooltipPosition: function() {
- return {
- x: this._model.x,
- y: this._model.y
- };
- },
+ canvas.height = height * pixelRatio;
+ canvas.width = width * pixelRatio;
+ chart.ctx.scale(pixelRatio, pixelRatio);
- hasValue: function() {
- return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
- }
- });
+ // If no style has been set on the canvas, the render size is used as display size,
+ // making the chart visually bigger, so let's enforce it to the "correct" values.
+ // See https://github.com/chartjs/Chart.js/issues/3575
+ canvas.style.height = height + 'px';
+ canvas.style.width = width + 'px';
+ };
+ // -- Canvas methods
+ helpers.clear = function(chart) {
+ chart.ctx.clearRect(0, 0, chart.width, chart.height);
+ };
+ helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
+ return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
+ };
+ helpers.longestText = function(ctx, font, arrayOfThings, cache) {
+ cache = cache || {};
+ var data = cache.data = cache.data || {};
+ var gc = cache.garbageCollect = cache.garbageCollect || [];
- Chart.Element.extend = helpers.inherits;
+ if (cache.font !== font) {
+ data = cache.data = {};
+ gc = cache.garbageCollect = [];
+ cache.font = font;
+ }
-};
+ ctx.font = font;
+ var longest = 0;
+ helpers.each(arrayOfThings, function(thing) {
+ // Undefined strings and arrays should not be measured
+ if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
+ longest = helpers.measureText(ctx, data, gc, longest, thing);
+ } else if (helpers.isArray(thing)) {
+ // if it is an array lets measure each element
+ // to do maybe simplify this function a bit so we can do this more recursively?
+ helpers.each(thing, function(nestedThing) {
+ // Undefined strings and arrays should not be measured
+ if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
+ longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
+ }
+ });
+ }
+ });
-},{}],26:[function(require,module,exports){
-/*global window: false */
-/*global document: false */
-"use strict";
+ var gcLen = gc.length / 2;
+ if (gcLen > arrayOfThings.length) {
+ for (var i = 0; i < gcLen; i++) {
+ delete data[gc[i]];
+ }
+ gc.splice(0, gcLen);
+ }
+ return longest;
+ };
+ helpers.measureText = function(ctx, data, gc, longest, string) {
+ var textWidth = data[string];
+ if (!textWidth) {
+ textWidth = data[string] = ctx.measureText(string).width;
+ gc.push(string);
+ }
+ if (textWidth > longest) {
+ longest = textWidth;
+ }
+ return longest;
+ };
+ helpers.numberOfLabelLines = function(arrayOfThings) {
+ var numberOfLines = 1;
+ helpers.each(arrayOfThings, function(thing) {
+ if (helpers.isArray(thing)) {
+ if (thing.length > numberOfLines) {
+ numberOfLines = thing.length;
+ }
+ }
+ });
+ return numberOfLines;
+ };
+ helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) {
+ ctx.beginPath();
+ ctx.moveTo(x + radius, y);
+ ctx.lineTo(x + width - radius, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+ ctx.lineTo(x + width, y + height - radius);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+ ctx.lineTo(x + radius, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+ ctx.lineTo(x, y + radius);
+ ctx.quadraticCurveTo(x, y, x + radius, y);
+ ctx.closePath();
+ };
-var color = require(3);
+ helpers.color = !color?
+ function(value) {
+ console.error('Color.js not found!');
+ return value;
+ } :
+ function(value) {
+ /* global CanvasGradient */
+ if (value instanceof CanvasGradient) {
+ value = Chart.defaults.global.defaultColor;
+ }
-module.exports = function(Chart) {
- //Global Chart helpers object for utility methods and classes
- var helpers = Chart.helpers = {};
+ return color(value);
+ };
- //-- Basic js utility methods
- helpers.each = function(loopable, callback, self, reverse) {
- // Check to see if null or undefined firstly.
- var i, len;
- if (helpers.isArray(loopable)) {
- len = loopable.length;
- if (reverse) {
- for (i = len - 1; i >= 0; i--) {
- callback.call(self, loopable[i], i);
- }
- } else {
- for (i = 0; i < len; i++) {
- callback.call(self, loopable[i], i);
- }
- }
- } else if (typeof loopable === 'object') {
- var keys = Object.keys(loopable);
- len = keys.length;
- for (i = 0; i < len; i++) {
- callback.call(self, loopable[keys[i]], keys[i]);
- }
- }
- };
- helpers.clone = function(obj) {
- var objClone = {};
- helpers.each(obj, function(value, key) {
- if (helpers.isArray(value)) {
- objClone[key] = value.slice(0);
- } else if (typeof value === 'object' && value !== null) {
- objClone[key] = helpers.clone(value);
- } else {
- objClone[key] = value;
- }
- });
- return objClone;
- };
- helpers.extend = function(base) {
- var setFn = function(value, key) { base[key] = value; };
- for (var i = 1, ilen = arguments.length; i < ilen; i++) {
- helpers.each(arguments[i], setFn);
- }
- return base;
- };
- // Need a special merge function to chart configs since they are now grouped
- helpers.configMerge = function(_base) {
- var base = helpers.clone(_base);
- helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) {
- helpers.each(extension, function(value, key) {
- if (key === 'scales') {
- // Scale config merging is complex. Add out own function here for that
- base[key] = helpers.scaleMerge(base.hasOwnProperty(key) ? base[key] : {}, value);
+ helpers.isArray = Array.isArray?
+ function(obj) {
+ return Array.isArray(obj);
+ } :
+ function(obj) {
+ return Object.prototype.toString.call(obj) === '[object Array]';
+ };
+ // ! @see http://stackoverflow.com/a/14853974
+ helpers.arrayEquals = function(a0, a1) {
+ var i, ilen, v0, v1;
- } else if (key === 'scale') {
- // Used in polar area & radar charts since there is only one scale
- base[key] = helpers.configMerge(base.hasOwnProperty(key) ? base[key] : {}, Chart.scaleService.getScaleDefaults(value.type), value);
- } else if (base.hasOwnProperty(key) && helpers.isArray(base[key]) && helpers.isArray(value)) {
- // In this case we have an array of objects replacing another array. Rather than doing a strict replace,
- // merge. This allows easy scale option merging
- var baseArray = base[key];
+ if (!a0 || !a1 || a0.length !== a1.length) {
+ return false;
+ }
- helpers.each(value, function(valueObj, index) {
+ for (i = 0, ilen=a0.length; i < ilen; ++i) {
+ v0 = a0[i];
+ v1 = a1[i];
- if (index < baseArray.length) {
- if (typeof baseArray[index] === 'object' && baseArray[index] !== null && typeof valueObj === 'object' && valueObj !== null) {
- // Two objects are coming together. Do a merge of them.
- baseArray[index] = helpers.configMerge(baseArray[index], valueObj);
- } else {
- // Just overwrite in this case since there is nothing to merge
- baseArray[index] = valueObj;
- }
- } else {
- baseArray.push(valueObj); // nothing to merge
- }
- });
+ if (v0 instanceof Array && v1 instanceof Array) {
+ if (!helpers.arrayEquals(v0, v1)) {
+ return false;
+ }
+ } else if (v0 !== v1) {
+ // NOTE: two different object instances will never be equal: {x:20} != {x:20}
+ return false;
+ }
+ }
- } else if (base.hasOwnProperty(key) && typeof base[key] === "object" && base[key] !== null && typeof value === "object") {
- // If we are overwriting an object with an object, do a merge of the properties.
- base[key] = helpers.configMerge(base[key], value);
+ return true;
+ };
+ helpers.callback = function(fn, args, thisArg) {
+ if (fn && typeof fn.call === 'function') {
+ fn.apply(thisArg, args);
+ }
+ };
+ helpers.getHoverColor = function(colorValue) {
+ /* global CanvasPattern */
+ return (colorValue instanceof CanvasPattern) ?
+ colorValue :
+ helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString();
+ };
- } else {
- // can just overwrite the value in this case
- base[key] = value;
- }
- });
- });
-
- return base;
- };
- helpers.scaleMerge = function(_base, extension) {
- var base = helpers.clone(_base);
-
- helpers.each(extension, function(value, key) {
- if (key === 'xAxes' || key === 'yAxes') {
- // These properties are arrays of items
- if (base.hasOwnProperty(key)) {
- helpers.each(value, function(valueObj, index) {
- var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
- var axisDefaults = Chart.scaleService.getScaleDefaults(axisType);
- if (index >= base[key].length || !base[key][index].type) {
- base[key].push(helpers.configMerge(axisDefaults, valueObj));
- } else if (valueObj.type && valueObj.type !== base[key][index].type) {
- // Type changed. Bring in the new defaults before we bring in valueObj so that valueObj can override the correct scale defaults
- base[key][index] = helpers.configMerge(base[key][index], axisDefaults, valueObj);
- } else {
- // Type is the same
- base[key][index] = helpers.configMerge(base[key][index], valueObj);
- }
- });
- } else {
- base[key] = [];
- helpers.each(value, function(valueObj) {
- var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
- base[key].push(helpers.configMerge(Chart.scaleService.getScaleDefaults(axisType), valueObj));
- });
- }
- } else if (base.hasOwnProperty(key) && typeof base[key] === "object" && base[key] !== null && typeof value === "object") {
- // If we are overwriting an object with an object, do a merge of the properties.
- base[key] = helpers.configMerge(base[key], value);
-
- } else {
- // can just overwrite the value in this case
- base[key] = value;
- }
- });
-
- return base;
- };
- helpers.getValueAtIndexOrDefault = function(value, index, defaultValue) {
- if (value === undefined || value === null) {
- return defaultValue;
- }
-
- if (helpers.isArray(value)) {
- return index < value.length ? value[index] : defaultValue;
- }
-
- return value;
- };
- helpers.getValueOrDefault = function(value, defaultValue) {
- return value === undefined ? defaultValue : value;
- };
- helpers.indexOf = Array.prototype.indexOf?
- function(array, item) { return array.indexOf(item); } :
- function(array, item) {
- for (var i = 0, ilen = array.length; i < ilen; ++i) {
- if (array[i] === item) {
- return i;
- }
- }
- return -1;
- };
- helpers.where = function(collection, filterCallback) {
- if (helpers.isArray(collection) && Array.prototype.filter) {
- return collection.filter(filterCallback);
- } else {
- var filtered = [];
-
- helpers.each(collection, function(item) {
- if (filterCallback(item)) {
- filtered.push(item);
- }
- });
-
- return filtered;
- }
- };
- helpers.findIndex = Array.prototype.findIndex?
- function(array, callback, scope) { return array.findIndex(callback, scope); } :
- function(array, callback, scope) {
- scope = scope === undefined? array : scope;
- for (var i = 0, ilen = array.length; i < ilen; ++i) {
- if (callback.call(scope, array[i], i, array)) {
- return i;
- }
- }
- return -1;
- };
- helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
- // Default to start of the array
- if (startIndex === undefined || startIndex === null) {
- startIndex = -1;
- }
- for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
- var currentItem = arrayToSearch[i];
- if (filterCallback(currentItem)) {
- return currentItem;
- }
- }
- };
- helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
- // Default to end of the array
- if (startIndex === undefined || startIndex === null) {
- startIndex = arrayToSearch.length;
- }
- for (var i = startIndex - 1; i >= 0; i--) {
- var currentItem = arrayToSearch[i];
- if (filterCallback(currentItem)) {
- return currentItem;
- }
- }
- };
- helpers.inherits = function(extensions) {
- //Basic javascript inheritance based on the model created in Backbone.js
- var parent = this;
- var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function() {
- return parent.apply(this, arguments);
- };
-
- var Surrogate = function() {
- this.constructor = ChartElement;
- };
- Surrogate.prototype = parent.prototype;
- ChartElement.prototype = new Surrogate();
-
- ChartElement.extend = helpers.inherits;
-
- if (extensions) {
- helpers.extend(ChartElement.prototype, extensions);
- }
-
- ChartElement.__super__ = parent.prototype;
-
- return ChartElement;
- };
- helpers.noop = function() {};
- helpers.uid = (function() {
- var id = 0;
- return function() {
- return id++;
- };
- })();
- //-- Math methods
- helpers.isNumber = function(n) {
- return !isNaN(parseFloat(n)) && isFinite(n);
- };
- helpers.almostEquals = function(x, y, epsilon) {
- return Math.abs(x - y) < epsilon;
- };
- helpers.max = function(array) {
- return array.reduce(function(max, value) {
- if (!isNaN(value)) {
- return Math.max(max, value);
- } else {
- return max;
- }
- }, Number.NEGATIVE_INFINITY);
- };
- helpers.min = function(array) {
- return array.reduce(function(min, value) {
- if (!isNaN(value)) {
- return Math.min(min, value);
- } else {
- return min;
- }
- }, Number.POSITIVE_INFINITY);
- };
- helpers.sign = Math.sign?
- function(x) { return Math.sign(x); } :
- function(x) {
- x = +x; // convert to a number
- if (x === 0 || isNaN(x)) {
- return x;
- }
- return x > 0 ? 1 : -1;
- };
- helpers.log10 = Math.log10?
- function(x) { return Math.log10(x); } :
- function(x) {
- return Math.log(x) / Math.LN10;
- };
- helpers.toRadians = function(degrees) {
- return degrees * (Math.PI / 180);
- };
- helpers.toDegrees = function(radians) {
- return radians * (180 / Math.PI);
- };
- // Gets the angle from vertical upright to the point about a centre.
- helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
- var distanceFromXCenter = anglePoint.x - centrePoint.x,
- distanceFromYCenter = anglePoint.y - centrePoint.y,
- radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
-
- var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
-
- if (angle < (-0.5 * Math.PI)) {
- angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
- }
-
- return {
- angle: angle,
- distance: radialDistanceFromCenter
- };
- };
- helpers.aliasPixel = function(pixelWidth) {
- return (pixelWidth % 2 === 0) ? 0 : 0.5;
- };
- helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
- //Props to Rob Spencer at scaled innovation for his post on splining between points
- //http://scaledinnovation.com/analytics/splines/aboutSplines.html
-
- // This function must also respect "skipped" points
-
- var previous = firstPoint.skip ? middlePoint : firstPoint,
- current = middlePoint,
- next = afterPoint.skip ? middlePoint : afterPoint;
-
- var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
- var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
-
- var s01 = d01 / (d01 + d12);
- var s12 = d12 / (d01 + d12);
-
- // If all points are the same, s01 & s02 will be inf
- s01 = isNaN(s01) ? 0 : s01;
- s12 = isNaN(s12) ? 0 : s12;
-
- var fa = t * s01; // scaling factor for triangle Ta
- var fb = t * s12;
-
- return {
- previous: {
- x: current.x - fa * (next.x - previous.x),
- y: current.y - fa * (next.y - previous.y)
- },
- next: {
- x: current.x + fb * (next.x - previous.x),
- y: current.y + fb * (next.y - previous.y)
- }
- };
- };
- helpers.nextItem = function(collection, index, loop) {
- if (loop) {
- return index >= collection.length - 1 ? collection[0] : collection[index + 1];
- }
-
- return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
- };
- helpers.previousItem = function(collection, index, loop) {
- if (loop) {
- return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
- }
- return index <= 0 ? collection[0] : collection[index - 1];
- };
- // Implementation of the nice number algorithm used in determining where axis labels will go
- helpers.niceNum = function(range, round) {
- var exponent = Math.floor(helpers.log10(range));
- var fraction = range / Math.pow(10, exponent);
- var niceFraction;
-
- if (round) {
- if (fraction < 1.5) {
- niceFraction = 1;
- } else if (fraction < 3) {
- niceFraction = 2;
- } else if (fraction < 7) {
- niceFraction = 5;
- } else {
- niceFraction = 10;
- }
- } else {
- if (fraction <= 1.0) {
- niceFraction = 1;
- } else if (fraction <= 2) {
- niceFraction = 2;
- } else if (fraction <= 5) {
- niceFraction = 5;
- } else {
- niceFraction = 10;
- }
- }
-
- return niceFraction * Math.pow(10, exponent);
- };
- //Easing functions adapted from Robert Penner's easing equations
- //http://www.robertpenner.com/easing/
- var easingEffects = helpers.easingEffects = {
- linear: function(t) {
- return t;
- },
- easeInQuad: function(t) {
- return t * t;
- },
- easeOutQuad: function(t) {
- return -1 * t * (t - 2);
- },
- easeInOutQuad: function(t) {
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * t * t;
- }
- return -1 / 2 * ((--t) * (t - 2) - 1);
- },
- easeInCubic: function(t) {
- return t * t * t;
- },
- easeOutCubic: function(t) {
- return 1 * ((t = t / 1 - 1) * t * t + 1);
- },
- easeInOutCubic: function(t) {
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * t * t * t;
- }
- return 1 / 2 * ((t -= 2) * t * t + 2);
- },
- easeInQuart: function(t) {
- return t * t * t * t;
- },
- easeOutQuart: function(t) {
- return -1 * ((t = t / 1 - 1) * t * t * t - 1);
- },
- easeInOutQuart: function(t) {
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * t * t * t * t;
- }
- return -1 / 2 * ((t -= 2) * t * t * t - 2);
- },
- easeInQuint: function(t) {
- return 1 * (t /= 1) * t * t * t * t;
- },
- easeOutQuint: function(t) {
- return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
- },
- easeInOutQuint: function(t) {
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * t * t * t * t * t;
- }
- return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
- },
- easeInSine: function(t) {
- return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
- },
- easeOutSine: function(t) {
- return 1 * Math.sin(t / 1 * (Math.PI / 2));
- },
- easeInOutSine: function(t) {
- return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
- },
- easeInExpo: function(t) {
- return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
- },
- easeOutExpo: function(t) {
- return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
- },
- easeInOutExpo: function(t) {
- if (t === 0) {
- return 0;
- }
- if (t === 1) {
- return 1;
- }
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * Math.pow(2, 10 * (t - 1));
- }
- return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
- },
- easeInCirc: function(t) {
- if (t >= 1) {
- return t;
- }
- return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
- },
- easeOutCirc: function(t) {
- return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
- },
- easeInOutCirc: function(t) {
- if ((t /= 1 / 2) < 1) {
- return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
- }
- return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
- },
- easeInElastic: function(t) {
- var s = 1.70158;
- var p = 0;
- var a = 1;
- if (t === 0) {
- return 0;
- }
- if ((t /= 1) === 1) {
- return 1;
- }
- if (!p) {
- p = 1 * 0.3;
- }
- if (a < Math.abs(1)) {
- a = 1;
- s = p / 4;
- } else {
- s = p / (2 * Math.PI) * Math.asin(1 / a);
- }
- return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
- },
- easeOutElastic: function(t) {
- var s = 1.70158;
- var p = 0;
- var a = 1;
- if (t === 0) {
- return 0;
- }
- if ((t /= 1) === 1) {
- return 1;
- }
- if (!p) {
- p = 1 * 0.3;
- }
- if (a < Math.abs(1)) {
- a = 1;
- s = p / 4;
- } else {
- s = p / (2 * Math.PI) * Math.asin(1 / a);
- }
- return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
- },
- easeInOutElastic: function(t) {
- var s = 1.70158;
- var p = 0;
- var a = 1;
- if (t === 0) {
- return 0;
- }
- if ((t /= 1 / 2) === 2) {
- return 1;
- }
- if (!p) {
- p = 1 * (0.3 * 1.5);
- }
- if (a < Math.abs(1)) {
- a = 1;
- s = p / 4;
- } else {
- s = p / (2 * Math.PI) * Math.asin(1 / a);
- }
- if (t < 1) {
- return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
- }
- return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
- },
- easeInBack: function(t) {
- var s = 1.70158;
- return 1 * (t /= 1) * t * ((s + 1) * t - s);
- },
- easeOutBack: function(t) {
- var s = 1.70158;
- return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
- },
- easeInOutBack: function(t) {
- var s = 1.70158;
- if ((t /= 1 / 2) < 1) {
- return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
- }
- return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
- },
- easeInBounce: function(t) {
- return 1 - easingEffects.easeOutBounce(1 - t);
- },
- easeOutBounce: function(t) {
- if ((t /= 1) < (1 / 2.75)) {
- return 1 * (7.5625 * t * t);
- } else if (t < (2 / 2.75)) {
- return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
- } else if (t < (2.5 / 2.75)) {
- return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
- } else {
- return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
- }
- },
- easeInOutBounce: function(t) {
- if (t < 1 / 2) {
- return easingEffects.easeInBounce(t * 2) * 0.5;
- }
- return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
- }
- };
- //Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
- helpers.requestAnimFrame = (function() {
- return window.requestAnimationFrame ||
- window.webkitRequestAnimationFrame ||
- window.mozRequestAnimationFrame ||
- window.oRequestAnimationFrame ||
- window.msRequestAnimationFrame ||
- function(callback) {
- return window.setTimeout(callback, 1000 / 60);
- };
- })();
- helpers.cancelAnimFrame = (function() {
- return window.cancelAnimationFrame ||
- window.webkitCancelAnimationFrame ||
- window.mozCancelAnimationFrame ||
- window.oCancelAnimationFrame ||
- window.msCancelAnimationFrame ||
- function(callback) {
- return window.clearTimeout(callback, 1000 / 60);
- };
- })();
- //-- DOM methods
- helpers.getRelativePosition = function(evt, chart) {
- var mouseX, mouseY;
- var e = evt.originalEvent || evt,
- canvas = evt.currentTarget || evt.srcElement,
- boundingRect = canvas.getBoundingClientRect();
-
- var touches = e.touches;
- if (touches && touches.length > 0) {
- mouseX = touches[0].clientX;
- mouseY = touches[0].clientY;
-
- } else {
- mouseX = e.clientX;
- mouseY = e.clientY;
- }
-
- // Scale mouse coordinates into canvas coordinates
- // by following the pattern laid out by 'jerryj' in the comments of
- // http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
- var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
- var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
- var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
- var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
- var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
- var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
-
- // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
- // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
- mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
- mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
-
- return {
- x: mouseX,
- y: mouseY
- };
-
- };
- helpers.addEvent = function(node, eventType, method) {
- if (node.addEventListener) {
- node.addEventListener(eventType, method);
- } else if (node.attachEvent) {
- node.attachEvent("on" + eventType, method);
- } else {
- node["on" + eventType] = method;
- }
- };
- helpers.removeEvent = function(node, eventType, handler) {
- if (node.removeEventListener) {
- node.removeEventListener(eventType, handler, false);
- } else if (node.detachEvent) {
- node.detachEvent("on" + eventType, handler);
- } else {
- node["on" + eventType] = helpers.noop;
- }
- };
- helpers.bindEvents = function(chartInstance, arrayOfEvents, handler) {
- // Create the events object if it's not already present
- var events = chartInstance.events = chartInstance.events || {};
-
- helpers.each(arrayOfEvents, function(eventName) {
- events[eventName] = function() {
- handler.apply(chartInstance, arguments);
- };
- helpers.addEvent(chartInstance.chart.canvas, eventName, events[eventName]);
- });
- };
- helpers.unbindEvents = function(chartInstance, arrayOfEvents) {
- var canvas = chartInstance.chart.canvas;
- helpers.each(arrayOfEvents, function(handler, eventName) {
- helpers.removeEvent(canvas, eventName, handler);
- });
- };
-
- // Private helper function to convert max-width/max-height values that may be percentages into a number
- function parseMaxStyle(styleValue, node, parentProperty) {
- var valueInPixels;
- if (typeof(styleValue) === 'string') {
- valueInPixels = parseInt(styleValue, 10);
-
- if (styleValue.indexOf('%') != -1) {
- // percentage * size in dimension
- valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
- }
- } else {
- valueInPixels = styleValue;
- }
-
- return valueInPixels;
- }
-
- /**
- * Returns if the given value contains an effective constraint.
- * @private
- */
- function isConstrainedValue(value) {
- return value !== undefined && value !== null && value !== 'none';
- }
-
- // Private helper to get a constraint dimension
- // @param domNode : the node to check the constraint on
- // @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
- // @param percentageProperty : property of parent to use when calculating width as a percentage
- // @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
- function getConstraintDimension(domNode, maxStyle, percentageProperty) {
- var view = document.defaultView;
- var parentNode = domNode.parentNode;
- var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
- var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
- var hasCNode = isConstrainedValue(constrainedNode);
- var hasCContainer = isConstrainedValue(constrainedContainer);
- var infinity = Number.POSITIVE_INFINITY;
-
- if (hasCNode || hasCContainer) {
- return Math.min(
- hasCNode? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
- hasCContainer? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
- }
-
- return 'none';
- }
- // returns Number or undefined if no constraint
- helpers.getConstraintWidth = function(domNode) {
- return getConstraintDimension(domNode, 'max-width', 'clientWidth');
- };
- // returns Number or undefined if no constraint
- helpers.getConstraintHeight = function(domNode) {
- return getConstraintDimension(domNode, 'max-height', 'clientHeight');
- };
- helpers.getMaximumWidth = function(domNode) {
- var container = domNode.parentNode;
- var padding = parseInt(helpers.getStyle(container, 'padding-left')) + parseInt(helpers.getStyle(container, 'padding-right'));
- var w = container.clientWidth - padding;
- var cw = helpers.getConstraintWidth(domNode);
- return isNaN(cw)? w : Math.min(w, cw);
- };
- helpers.getMaximumHeight = function(domNode) {
- var container = domNode.parentNode;
- var padding = parseInt(helpers.getStyle(container, 'padding-top')) + parseInt(helpers.getStyle(container, 'padding-bottom'));
- var h = container.clientHeight - padding;
- var ch = helpers.getConstraintHeight(domNode);
- return isNaN(ch)? h : Math.min(h, ch);
- };
- helpers.getStyle = function(el, property) {
- return el.currentStyle ?
- el.currentStyle[property] :
- document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
- };
- helpers.retinaScale = function(chart) {
- var ctx = chart.ctx;
- var canvas = chart.canvas;
- var width = canvas.width;
- var height = canvas.height;
- var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
-
- if (pixelRatio !== 1) {
- canvas.height = height * pixelRatio;
- canvas.width = width * pixelRatio;
- ctx.scale(pixelRatio, pixelRatio);
-
- // Store the device pixel ratio so that we can go backwards in `destroy`.
- // The devicePixelRatio changes with zoom, so there are no guarantees that it is the same
- // when destroy is called
- chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || pixelRatio;
- }
-
- canvas.style.width = width + 'px';
- canvas.style.height = height + 'px';
- };
- //-- Canvas methods
- helpers.clear = function(chart) {
- chart.ctx.clearRect(0, 0, chart.width, chart.height);
- };
- helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
- return fontStyle + " " + pixelSize + "px " + fontFamily;
- };
- helpers.longestText = function(ctx, font, arrayOfThings, cache) {
- cache = cache || {};
- var data = cache.data = cache.data || {};
- var gc = cache.garbageCollect = cache.garbageCollect || [];
-
- if (cache.font !== font) {
- data = cache.data = {};
- gc = cache.garbageCollect = [];
- cache.font = font;
- }
-
- ctx.font = font;
- var longest = 0;
- helpers.each(arrayOfThings, function(thing) {
- // Undefined strings and arrays should not be measured
- if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
- longest = helpers.measureText(ctx, data, gc, longest, thing);
- } else if (helpers.isArray(thing)) {
- // if it is an array lets measure each element
- // to do maybe simplify this function a bit so we can do this more recursively?
- helpers.each(thing, function(nestedThing) {
- // Undefined strings and arrays should not be measured
- if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
- longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
- }
- });
- }
- });
-
- var gcLen = gc.length / 2;
- if (gcLen > arrayOfThings.length) {
- for (var i = 0; i < gcLen; i++) {
- delete data[gc[i]];
- }
- gc.splice(0, gcLen);
- }
- return longest;
- };
- helpers.measureText = function (ctx, data, gc, longest, string) {
- var textWidth = data[string];
- if (!textWidth) {
- textWidth = data[string] = ctx.measureText(string).width;
- gc.push(string);
- }
- if (textWidth > longest) {
- longest = textWidth;
- }
- return longest;
- };
- helpers.numberOfLabelLines = function(arrayOfThings) {
- var numberOfLines = 1;
- helpers.each(arrayOfThings, function(thing) {
- if (helpers.isArray(thing)) {
- if (thing.length > numberOfLines) {
- numberOfLines = thing.length;
- }
- }
- });
- return numberOfLines;
- };
- helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) {
- ctx.beginPath();
- ctx.moveTo(x + radius, y);
- ctx.lineTo(x + width - radius, y);
- ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
- ctx.lineTo(x + width, y + height - radius);
- ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
- ctx.lineTo(x + radius, y + height);
- ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
- ctx.lineTo(x, y + radius);
- ctx.quadraticCurveTo(x, y, x + radius, y);
- ctx.closePath();
- };
- helpers.color = function(c) {
- if (!color) {
- console.log('Color.js not found!');
- return c;
- }
-
- /* global CanvasGradient */
- if (c instanceof CanvasGradient) {
- return color(Chart.defaults.global.defaultColor);
- }
-
- return color(c);
- };
- helpers.addResizeListener = function(node, callback) {
- // Hide an iframe before the node
- var hiddenIframe = document.createElement('iframe');
- var hiddenIframeClass = 'chartjs-hidden-iframe';
-
- if (hiddenIframe.classlist) {
- // can use classlist
- hiddenIframe.classlist.add(hiddenIframeClass);
- } else {
- hiddenIframe.setAttribute('class', hiddenIframeClass);
- }
-
- // Set the style
- var style = hiddenIframe.style;
- style.width = '100%';
- style.display = 'block';
- style.border = 0;
- style.height = 0;
- style.margin = 0;
- style.position = 'absolute';
- style.left = 0;
- style.right = 0;
- style.top = 0;
- style.bottom = 0;
-
- // Insert the iframe so that contentWindow is available
- node.insertBefore(hiddenIframe, node.firstChild);
-
- (hiddenIframe.contentWindow || hiddenIframe).onresize = function() {
- if (callback) {
- callback();
- }
- };
- };
- helpers.removeResizeListener = function(node) {
- var hiddenIframe = node.querySelector('.chartjs-hidden-iframe');
-
- // Remove the resize detect iframe
- if (hiddenIframe) {
- hiddenIframe.parentNode.removeChild(hiddenIframe);
- }
- };
- helpers.isArray = Array.isArray?
- function(obj) { return Array.isArray(obj); } :
- function(obj) {
- return Object.prototype.toString.call(obj) === '[object Array]';
- };
- //! @see http://stackoverflow.com/a/14853974
- helpers.arrayEquals = function(a0, a1) {
- var i, ilen, v0, v1;
-
- if (!a0 || !a1 || a0.length != a1.length) {
- return false;
- }
-
- for (i = 0, ilen=a0.length; i < ilen; ++i) {
- v0 = a0[i];
- v1 = a1[i];
-
- if (v0 instanceof Array && v1 instanceof Array) {
- if (!helpers.arrayEquals(v0, v1)) {
- return false;
- }
- } else if (v0 != v1) {
- // NOTE: two different object instances will never be equal: {x:20} != {x:20}
- return false;
- }
- }
-
- return true;
- };
- helpers.callCallback = function(fn, args, _tArg) {
- if (fn && typeof fn.call === 'function') {
- fn.apply(_tArg, args);
- }
- };
- helpers.getHoverColor = function(color) {
- /* global CanvasPattern */
- return (color instanceof CanvasPattern) ?
- color :
- helpers.color(color).saturate(0.5).darken(0.1).rgbString();
- };
-};
+ /**
+ * Provided for backward compatibility, use Chart.helpers#callback instead.
+ * @function Chart.helpers#callCallback
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+ helpers.callCallback = helpers.callback;
+ };
},{"3":3}],27:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function() {
+ module.exports = function(Chart) {
+ var helpers = Chart.helpers;
- //Occupy the global variable of Chart, and create a simple base class
- var Chart = function(context, config) {
- var me = this;
- var helpers = Chart.helpers;
- me.config = config || {
- data: {
- datasets: []
- }
- };
+ /**
+ * Helper function to get relative position for an event
+ * @param {Event|IEvent} event - The event to get the position for
+ * @param {Chart} chart - The chart
+ * @returns {Point} the event position
+ */
+ function getRelativePosition(e, chart) {
+ if (e.native) {
+ return {
+ x: e.x,
+ y: e.y
+ };
+ }
- // Support a jQuery'd canvas element
- if (context.length && context[0].getContext) {
- context = context[0];
- }
+ return helpers.getRelativePosition(e, chart);
+ }
- // Support a canvas domnode
- if (context.getContext) {
- context = context.getContext("2d");
- }
+ /**
+ * Helper function to traverse all of the visible elements in the chart
+ * @param chart {chart} the chart
+ * @param handler {Function} the callback to execute for each visible item
+ */
+ function parseVisibleItems(chart, handler) {
+ var datasets = chart.data.datasets;
+ var meta, i, j, ilen, jlen;
- me.ctx = context;
- me.canvas = context.canvas;
+ for (i = 0, ilen = datasets.length; i < ilen; ++i) {
+ if (!chart.isDatasetVisible(i)) {
+ continue;
+ }
- context.canvas.style.display = context.canvas.style.display || 'block';
+ meta = chart.getDatasetMeta(i);
+ for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
+ var element = meta.data[j];
+ if (!element._view.skip) {
+ handler(element);
+ }
+ }
+ }
+ }
- // Figure out what the size of the chart will be.
- // If the canvas has a specified width and height, we use those else
- // we look to see if the canvas node has a CSS width and height.
- // If there is still no height, fill the parent container
- me.width = context.canvas.width || parseInt(helpers.getStyle(context.canvas, 'width'), 10) || helpers.getMaximumWidth(context.canvas);
- me.height = context.canvas.height || parseInt(helpers.getStyle(context.canvas, 'height'), 10) || helpers.getMaximumHeight(context.canvas);
+ /**
+ * Helper function to get the items that intersect the event position
+ * @param items {ChartElement[]} elements to filter
+ * @param position {Point} the point to be nearest to
+ * @return {ChartElement[]} the nearest items
+ */
+ function getIntersectItems(chart, position) {
+ var elements = [];
- me.aspectRatio = me.width / me.height;
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ }
+ });
- if (isNaN(me.aspectRatio) || isFinite(me.aspectRatio) === false) {
- // If the canvas has no size, try and figure out what the aspect ratio will be.
- // Some charts prefer square canvases (pie, radar, etc). If that is specified, use that
- // else use the canvas default ratio of 2
- me.aspectRatio = config.aspectRatio !== undefined ? config.aspectRatio : 2;
- }
+ return elements;
+ }
- // Store the original style of the element so we can set it back
- me.originalCanvasStyleWidth = context.canvas.style.width;
- me.originalCanvasStyleHeight = context.canvas.style.height;
+ /**
+ * Helper function to get the items nearest to the event position considering all visible items in teh chart
+ * @param chart {Chart} the chart to look at elements from
+ * @param position {Point} the point to be nearest to
+ * @param intersect {Boolean} if true, only consider items that intersect the position
+ * @param distanceMetric {Function} Optional function to provide the distance between
+ * @return {ChartElement[]} the nearest items
+ */
+ function getNearestItems(chart, position, intersect, distanceMetric) {
+ var minDistance = Number.POSITIVE_INFINITY;
+ var nearestItems = [];
- // High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
- helpers.retinaScale(me);
- me.controller = new Chart.Controller(me);
+ if (!distanceMetric) {
+ distanceMetric = helpers.distanceBetweenPoints;
+ }
- // Always bind this so that if the responsive state changes we still work
- helpers.addResizeListener(context.canvas.parentNode, function() {
- if (me.controller && me.controller.config.options.responsive) {
- me.controller.resize();
- }
- });
+ parseVisibleItems(chart, function(element) {
+ if (intersect && !element.inRange(position.x, position.y)) {
+ return;
+ }
- return me.controller ? me.controller : me;
+ var center = element.getCenterPoint();
+ var distance = distanceMetric(position, center);
- };
+ if (distance < minDistance) {
+ nearestItems = [element];
+ minDistance = distance;
+ } else if (distance === minDistance) {
+ // Can have multiple items at the same distance in which case we sort by size
+ nearestItems.push(element);
+ }
+ });
- //Globally expose the defaults to allow for user updating/changing
- Chart.defaults = {
- global: {
- responsive: true,
- responsiveAnimationDuration: 0,
- maintainAspectRatio: true,
- events: ["mousemove", "mouseout", "click", "touchstart", "touchmove"],
- hover: {
- onHover: null,
- mode: 'single',
- animationDuration: 400
- },
- onClick: null,
- defaultColor: 'rgba(0,0,0,0.1)',
- defaultFontColor: '#666',
- defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
- defaultFontSize: 12,
- defaultFontStyle: 'normal',
- showLines: true,
+ return nearestItems;
+ }
- // Element defaults defined in element extensions
- elements: {},
+ function indexMode(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var distanceMetric = function(pt1, pt2) {
+ return Math.abs(pt1.x - pt2.x);
+ };
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+ var elements = [];
- // Legend callback string
- legendCallback: function(chart) {
- var text = [];
- text.push('<ul class="' + chart.id + '-legend">');
- for (var i = 0; i < chart.data.datasets.length; i++) {
- text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
- if (chart.data.datasets[i].label) {
- text.push(chart.data.datasets[i].label);
- }
- text.push('</li>');
- }
- text.push('</ul>');
+ if (!items.length) {
+ return [];
+ }
- return text.join("");
- }
- }
- };
+ chart.data.datasets.forEach(function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex),
+ element = meta.data[items[0]._index];
- Chart.Chart = Chart;
+ // don't count items that are skipped (null data)
+ if (element && !element._view.skip) {
+ elements.push(element);
+ }
+ }
+ });
- return Chart;
+ return elements;
+ }
-};
+ /**
+ * @interface IInteractionOptions
+ */
+ /**
+ * If true, only consider items that intersect the point
+ * @name IInterfaceOptions#boolean
+ * @type Boolean
+ */
+
+ /**
+ * Contains interaction related functions
+ * @namespace Chart.Interaction
+ */
+ Chart.Interaction = {
+ // Helper function for different modes
+ modes: {
+ single: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ return elements;
+ }
+ });
+
+ return elements.slice(0, 1);
+ },
+
+ /**
+ * @function Chart.Interaction.modes.label
+ * @deprecated since version 2.4.0
+ * @todo remove at version 3
+ * @private
+ */
+ label: indexMode,
+
+ /**
+ * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
+ * @function Chart.Interaction.modes.index
+ * @since v2.4.0
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @param options {IInteractionOptions} options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ index: indexMode,
+
+ /**
+ * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect is false, we find the nearest item and return the items in that dataset
+ * @function Chart.Interaction.modes.dataset
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @param options {IInteractionOptions} options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ dataset: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false);
+
+ if (items.length > 0) {
+ items = chart.getDatasetMeta(items[0]._datasetIndex).data;
+ }
+
+ return items;
+ },
+
+ /**
+ * @function Chart.Interaction.modes.x-axis
+ * @deprecated since version 2.4.0. Use index mode and intersect == true
+ * @todo remove at version 3
+ * @private
+ */
+ 'x-axis': function(chart, e) {
+ return indexMode(chart, e, true);
+ },
+
+ /**
+ * Point mode returns all elements that hit test based on the event position
+ * of the event
+ * @function Chart.Interaction.modes.intersect
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ point: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ return getIntersectItems(chart, position);
+ },
+
+ /**
+ * nearest mode returns the element closest to the point
+ * @function Chart.Interaction.modes.intersect
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @param options {IInteractionOptions} options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ nearest: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var nearestItems = getNearestItems(chart, position, options.intersect);
+
+ // We have multiple items at the same distance from the event. Now sort by smallest
+ if (nearestItems.length > 1) {
+ nearestItems.sort(function(a, b) {
+ var sizeA = a.getArea();
+ var sizeB = b.getArea();
+ var ret = sizeA - sizeB;
+
+ if (ret === 0) {
+ // if equal sort by dataset index
+ ret = a._datasetIndex - b._datasetIndex;
+ }
+
+ return ret;
+ });
+ }
+
+ // Return only 1 item
+ return nearestItems.slice(0, 1);
+ },
+
+ /**
+ * x mode returns the elements that hit-test at the current x coordinate
+ * @function Chart.Interaction.modes.x
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @param options {IInteractionOptions} options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ x: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inXRange(position.x)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ },
+
+ /**
+ * y mode returns the elements that hit-test at the current y coordinate
+ * @function Chart.Interaction.modes.y
+ * @param chart {chart} the chart we are returning items from
+ * @param e {Event} the event we are find things at
+ * @param options {IInteractionOptions} options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ y: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inYRange(position.y)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ }
+ }
+ };
+ };
},{}],28:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function() {
- var helpers = Chart.helpers;
+ // Occupy the global variable of Chart, and create a simple base class
+ var Chart = function(item, config) {
+ this.construct(item, config);
+ return this;
+ };
- // The layout service is very self explanatory. It's responsible for the layout within a chart.
- // Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
- // It is this service's responsibility of carrying out that layout.
- Chart.layoutService = {
- defaults: {},
+ // Globally expose the defaults to allow for user updating/changing
+ Chart.defaults = {
+ global: {
+ responsive: true,
+ responsiveAnimationDuration: 0,
+ maintainAspectRatio: true,
+ events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
+ hover: {
+ onHover: null,
+ mode: 'nearest',
+ intersect: true,
+ animationDuration: 400
+ },
+ onClick: null,
+ defaultColor: 'rgba(0,0,0,0.1)',
+ defaultFontColor: '#666',
+ defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+ defaultFontSize: 12,
+ defaultFontStyle: 'normal',
+ showLines: true,
- // Register a box to a chartInstance. A box is simply a reference to an object that requires layout. eg. Scales, Legend, Plugins.
- addBox: function(chartInstance, box) {
- if (!chartInstance.boxes) {
- chartInstance.boxes = [];
- }
- chartInstance.boxes.push(box);
- },
+ // Element defaults defined in element extensions
+ elements: {},
- removeBox: function(chartInstance, box) {
- if (!chartInstance.boxes) {
- return;
- }
- chartInstance.boxes.splice(chartInstance.boxes.indexOf(box), 1);
- },
+ // Legend callback string
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+ for (var i = 0; i < chart.data.datasets.length; i++) {
+ text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
+ if (chart.data.datasets[i].label) {
+ text.push(chart.data.datasets[i].label);
+ }
+ text.push('</li>');
+ }
+ text.push('</ul>');
- // The most important function
- update: function(chartInstance, width, height) {
+ return text.join('');
+ }
+ }
+ };
- if (!chartInstance) {
- return;
- }
+ Chart.Chart = Chart;
- var xPadding = 0;
- var yPadding = 0;
-
- var leftBoxes = helpers.where(chartInstance.boxes, function(box) {
- return box.options.position === "left";
- });
- var rightBoxes = helpers.where(chartInstance.boxes, function(box) {
- return box.options.position === "right";
- });
- var topBoxes = helpers.where(chartInstance.boxes, function(box) {
- return box.options.position === "top";
- });
- var bottomBoxes = helpers.where(chartInstance.boxes, function(box) {
- return box.options.position === "bottom";
- });
-
- // Boxes that overlay the chartarea such as the radialLinear scale
- var chartAreaBoxes = helpers.where(chartInstance.boxes, function(box) {
- return box.options.position === "chartArea";
- });
-
- // Ensure that full width boxes are at the very top / bottom
- topBoxes.sort(function(a, b) {
- return (b.options.fullWidth ? 1 : 0) - (a.options.fullWidth ? 1 : 0);
- });
- bottomBoxes.sort(function(a, b) {
- return (a.options.fullWidth ? 1 : 0) - (b.options.fullWidth ? 1 : 0);
- });
-
- // Essentially we now have any number of boxes on each of the 4 sides.
- // Our canvas looks like the following.
- // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
- // B1 is the bottom axis
- // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
- // These locations are single-box locations only, when trying to register a chartArea location that is already taken,
- // an error will be thrown.
- //
- // |----------------------------------------------------|
- // | T1 (Full Width) |
- // |----------------------------------------------------|
- // | | | T2 | |
- // | |----|-------------------------------------|----|
- // | | | C1 | | C2 | |
- // | | |----| |----| |
- // | | | | |
- // | L1 | L2 | ChartArea (C0) | R1 |
- // | | | | |
- // | | |----| |----| |
- // | | | C3 | | C4 | |
- // | |----|-------------------------------------|----|
- // | | | B1 | |
- // |----------------------------------------------------|
- // | B2 (Full Width) |
- // |----------------------------------------------------|
- //
- // What we do to find the best sizing, we do the following
- // 1. Determine the minimum size of the chart area.
- // 2. Split the remaining width equally between each vertical axis
- // 3. Split the remaining height equally between each horizontal axis
- // 4. Give each layout the maximum size it can be. The layout will return it's minimum size
- // 5. Adjust the sizes of each axis based on it's minimum reported size.
- // 6. Refit each axis
- // 7. Position each axis in the final location
- // 8. Tell the chart the final location of the chart area
- // 9. Tell any axes that overlay the chart area the positions of the chart area
-
- // Step 1
- var chartWidth = width - (2 * xPadding);
- var chartHeight = height - (2 * yPadding);
- var chartAreaWidth = chartWidth / 2; // min 50%
- var chartAreaHeight = chartHeight / 2; // min 50%
-
- // Step 2
- var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
-
- // Step 3
- var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
-
- // Step 4
- var maxChartAreaWidth = chartWidth;
- var maxChartAreaHeight = chartHeight;
- var minBoxSizes = [];
-
- helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
-
- function getMinimumBoxSize(box) {
- var minSize;
- var isHorizontal = box.isHorizontal();
-
- if (isHorizontal) {
- minSize = box.update(box.options.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
- maxChartAreaHeight -= minSize.height;
- } else {
- minSize = box.update(verticalBoxWidth, chartAreaHeight);
- maxChartAreaWidth -= minSize.width;
- }
-
- minBoxSizes.push({
- horizontal: isHorizontal,
- minSize: minSize,
- box: box
- });
- }
-
- // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
- // be if the axes are drawn at their minimum sizes.
-
- // Steps 5 & 6
- var totalLeftBoxesWidth = xPadding;
- var totalRightBoxesWidth = xPadding;
- var totalTopBoxesHeight = yPadding;
- var totalBottomBoxesHeight = yPadding;
-
- // Update, and calculate the left and right margins for the horizontal boxes
- helpers.each(leftBoxes.concat(rightBoxes), fitBox);
-
- helpers.each(leftBoxes, function(box) {
- totalLeftBoxesWidth += box.width;
- });
-
- helpers.each(rightBoxes, function(box) {
- totalRightBoxesWidth += box.width;
- });
-
- // Set the Left and Right margins for the horizontal boxes
- helpers.each(topBoxes.concat(bottomBoxes), fitBox);
-
- // Function to fit a box
- function fitBox(box) {
- var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBoxSize) {
- return minBoxSize.box === box;
- });
-
- if (minBoxSize) {
- if (box.isHorizontal()) {
- var scaleMargin = {
- left: totalLeftBoxesWidth,
- right: totalRightBoxesWidth,
- top: 0,
- bottom: 0
- };
-
- // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
- // on the margin. Sometimes they need to increase in size slightly
- box.update(box.options.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
- } else {
- box.update(minBoxSize.minSize.width, maxChartAreaHeight);
- }
- }
- }
-
- // Figure out how much margin is on the top and bottom of the vertical boxes
- helpers.each(topBoxes, function(box) {
- totalTopBoxesHeight += box.height;
- });
-
- helpers.each(bottomBoxes, function(box) {
- totalBottomBoxesHeight += box.height;
- });
-
- // Let the left layout know the final margin
- helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
-
- function finalFitVerticalBox(box) {
- var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBoxSize) {
- return minBoxSize.box === box;
- });
-
- var scaleMargin = {
- left: 0,
- right: 0,
- top: totalTopBoxesHeight,
- bottom: totalBottomBoxesHeight
- };
-
- if (minBoxSize) {
- box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
- }
- }
-
- // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
- totalLeftBoxesWidth = xPadding;
- totalRightBoxesWidth = xPadding;
- totalTopBoxesHeight = yPadding;
- totalBottomBoxesHeight = yPadding;
-
- helpers.each(leftBoxes, function(box) {
- totalLeftBoxesWidth += box.width;
- });
-
- helpers.each(rightBoxes, function(box) {
- totalRightBoxesWidth += box.width;
- });
-
- helpers.each(topBoxes, function(box) {
- totalTopBoxesHeight += box.height;
- });
- helpers.each(bottomBoxes, function(box) {
- totalBottomBoxesHeight += box.height;
- });
-
- // Figure out if our chart area changed. This would occur if the dataset layout label rotation
- // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
- // without calling `fit` again
- var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
- var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
-
- if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
- helpers.each(leftBoxes, function(box) {
- box.height = newMaxChartAreaHeight;
- });
-
- helpers.each(rightBoxes, function(box) {
- box.height = newMaxChartAreaHeight;
- });
-
- helpers.each(topBoxes, function(box) {
- if (!box.options.fullWidth) {
- box.width = newMaxChartAreaWidth;
- }
- });
-
- helpers.each(bottomBoxes, function(box) {
- if (!box.options.fullWidth) {
- box.width = newMaxChartAreaWidth;
- }
- });
-
- maxChartAreaHeight = newMaxChartAreaHeight;
- maxChartAreaWidth = newMaxChartAreaWidth;
- }
-
- // Step 7 - Position the boxes
- var left = xPadding;
- var top = yPadding;
-
- helpers.each(leftBoxes.concat(topBoxes), placeBox);
-
- // Account for chart width and height
- left += maxChartAreaWidth;
- top += maxChartAreaHeight;
-
- helpers.each(rightBoxes, placeBox);
- helpers.each(bottomBoxes, placeBox);
-
- function placeBox(box) {
- if (box.isHorizontal()) {
- box.left = box.options.fullWidth ? xPadding : totalLeftBoxesWidth;
- box.right = box.options.fullWidth ? width - xPadding : totalLeftBoxesWidth + maxChartAreaWidth;
- box.top = top;
- box.bottom = top + box.height;
-
- // Move to next point
- top = box.bottom;
-
- } else {
-
- box.left = left;
- box.right = left + box.width;
- box.top = totalTopBoxesHeight;
- box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
-
- // Move to next point
- left = box.right;
- }
- }
-
- // Step 8
- chartInstance.chartArea = {
- left: totalLeftBoxesWidth,
- top: totalTopBoxesHeight,
- right: totalLeftBoxesWidth + maxChartAreaWidth,
- bottom: totalTopBoxesHeight + maxChartAreaHeight
- };
-
- // Step 9
- helpers.each(chartAreaBoxes, function(box) {
- box.left = chartInstance.chartArea.left;
- box.top = chartInstance.chartArea.top;
- box.right = chartInstance.chartArea.right;
- box.bottom = chartInstance.chartArea.bottom;
-
- box.update(maxChartAreaWidth, maxChartAreaHeight);
- });
- }
- };
-};
+ return Chart;
+ };
},{}],29:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
- var noop = helpers.noop;
+ var helpers = Chart.helpers;
- Chart.defaults.global.legend = {
+ function filterByPosition(array, position) {
+ return helpers.where(array, function(v) {
+ return v.position === position;
+ });
+ }
- display: true,
- position: 'top',
- fullWidth: true, // marks that this box should take the full width of the canvas (pushing down other boxes)
- reverse: false,
+ function sortByWeight(array, reverse) {
+ array.forEach(function(v, i) {
+ v._tmpIndex_ = i;
+ return v;
+ });
+ array.sort(function(a, b) {
+ var v0 = reverse ? b : a;
+ var v1 = reverse ? a : b;
+ return v0.weight === v1.weight ?
+ v0._tmpIndex_ - v1._tmpIndex_ :
+ v0.weight - v1.weight;
+ });
+ array.forEach(function(v) {
+ delete v._tmpIndex_;
+ });
+ }
- // a callback that will handle
- onClick: function(e, legendItem) {
- var index = legendItem.datasetIndex;
- var ci = this.chart;
- var meta = ci.getDatasetMeta(index);
+ /**
+ * @interface ILayoutItem
+ * @prop {String} position - The position of the item in the chart layout. Possible values are
+ * 'left', 'top', 'right', 'bottom', and 'chartArea'
+ * @prop {Number} weight - The weight used to sort the item. Higher weights are further away from the chart area
+ * @prop {Boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
+ * @prop {Function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
+ * @prop {Function} update - Takes two parameters: width and height. Returns size of item
+ * @prop {Function} getPadding - Returns an object with padding on the edges
+ * @prop {Number} width - Width of item. Must be valid after update()
+ * @prop {Number} height - Height of item. Must be valid after update()
+ * @prop {Number} left - Left edge of the item. Set by layout system and cannot be used in update
+ * @prop {Number} top - Top edge of the item. Set by layout system and cannot be used in update
+ * @prop {Number} right - Right edge of the item. Set by layout system and cannot be used in update
+ * @prop {Number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
+ */
- // See controller.isDatasetVisible comment
- meta.hidden = meta.hidden === null? !ci.data.datasets[index].hidden : null;
+ // The layout service is very self explanatory. It's responsible for the layout within a chart.
+ // Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
+ // It is this service's responsibility of carrying out that layout.
+ Chart.layoutService = {
+ defaults: {},
- // We hid a dataset ... rerender the chart
- ci.update();
- },
+ /**
+ * Register a box to a chart.
+ * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
+ * @param {Chart} chart - the chart to use
+ * @param {ILayoutItem} item - the item to add to be layed out
+ */
+ addBox: function(chart, item) {
+ if (!chart.boxes) {
+ chart.boxes = [];
+ }
- labels: {
- boxWidth: 40,
- padding: 10,
- // Generates labels shown in the legend
- // Valid properties to return:
- // text : text to display
- // fillStyle : fill of coloured box
- // strokeStyle: stroke of coloured box
- // hidden : if this legend item refers to a hidden item
- // lineCap : cap style for line
- // lineDash
- // lineDashOffset :
- // lineJoin :
- // lineWidth :
- generateLabels: function(chart) {
- var data = chart.data;
- return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
- return {
- text: dataset.label,
- fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
- hidden: !chart.isDatasetVisible(i),
- lineCap: dataset.borderCapStyle,
- lineDash: dataset.borderDash,
- lineDashOffset: dataset.borderDashOffset,
- lineJoin: dataset.borderJoinStyle,
- lineWidth: dataset.borderWidth,
- strokeStyle: dataset.borderColor,
- pointStyle: dataset.pointStyle,
+ // initialize item with default values
+ item.fullWidth = item.fullWidth || false;
+ item.position = item.position || 'top';
+ item.weight = item.weight || 0;
- // Below is extra data used for toggling the datasets
- datasetIndex: i
- };
- }, this) : [];
- }
- }
- };
+ chart.boxes.push(item);
+ },
- Chart.Legend = Chart.Element.extend({
+ /**
+ * Remove a layoutItem from a chart
+ * @param {Chart} chart - the chart to remove the box from
+ * @param {Object} layoutItem - the item to remove from the layout
+ */
+ removeBox: function(chart, layoutItem) {
+ var index = chart.boxes? chart.boxes.indexOf(layoutItem) : -1;
+ if (index !== -1) {
+ chart.boxes.splice(index, 1);
+ }
+ },
- initialize: function(config) {
- helpers.extend(this, config);
+ /**
+ * Sets (or updates) options on the given `item`.
+ * @param {Chart} chart - the chart in which the item lives (or will be added to)
+ * @param {Object} item - the item to configure with the given options
+ * @param {Object} options - the new item options.
+ */
+ configure: function(chart, item, options) {
+ var props = ['fullWidth', 'position', 'weight'];
+ var ilen = props.length;
+ var i = 0;
+ var prop;
- // Contains hit boxes for each dataset (in dataset order)
- this.legendHitBoxes = [];
+ for (; i<ilen; ++i) {
+ prop = props[i];
+ if (options.hasOwnProperty(prop)) {
+ item[prop] = options[prop];
+ }
+ }
+ },
- // Are we in doughnut mode which has a different data type
- this.doughnutMode = false;
- },
+ /**
+ * Fits boxes of the given chart into the given size by having each box measure itself
+ * then running a fitting algorithm
+ * @param {Chart} chart - the chart
+ * @param {Number} width - the width to fit into
+ * @param {Number} height - the height to fit into
+ */
+ update: function(chart, width, height) {
+ if (!chart) {
+ return;
+ }
- // These methods are ordered by lifecyle. Utilities then follow.
- // Any function defined here is inherited by all legend types.
- // Any function can be extended by the legend type
+ var layoutOptions = chart.options.layout;
+ var padding = layoutOptions ? layoutOptions.padding : null;
- beforeUpdate: noop,
- update: function(maxWidth, maxHeight, margins) {
- var me = this;
+ var leftPadding = 0;
+ var rightPadding = 0;
+ var topPadding = 0;
+ var bottomPadding = 0;
- // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- me.beforeUpdate();
+ if (!isNaN(padding)) {
+ // options.layout.padding is a number. assign to all
+ leftPadding = padding;
+ rightPadding = padding;
+ topPadding = padding;
+ bottomPadding = padding;
+ } else {
+ leftPadding = padding.left || 0;
+ rightPadding = padding.right || 0;
+ topPadding = padding.top || 0;
+ bottomPadding = padding.bottom || 0;
+ }
- // Absorb the master measurements
- me.maxWidth = maxWidth;
- me.maxHeight = maxHeight;
- me.margins = margins;
+ var leftBoxes = filterByPosition(chart.boxes, 'left');
+ var rightBoxes = filterByPosition(chart.boxes, 'right');
+ var topBoxes = filterByPosition(chart.boxes, 'top');
+ var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
+ var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
- // Dimensions
- me.beforeSetDimensions();
- me.setDimensions();
- me.afterSetDimensions();
- // Labels
- me.beforeBuildLabels();
- me.buildLabels();
- me.afterBuildLabels();
+ // Sort boxes by weight. A higher weight is further away from the chart area
+ sortByWeight(leftBoxes, true);
+ sortByWeight(rightBoxes, false);
+ sortByWeight(topBoxes, true);
+ sortByWeight(bottomBoxes, false);
- // Fit
- me.beforeFit();
- me.fit();
- me.afterFit();
- //
- me.afterUpdate();
+ // Essentially we now have any number of boxes on each of the 4 sides.
+ // Our canvas looks like the following.
+ // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
+ // B1 is the bottom axis
+ // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
+ // These locations are single-box locations only, when trying to register a chartArea location that is already taken,
+ // an error will be thrown.
+ //
+ // |----------------------------------------------------|
+ // | T1 (Full Width) |
+ // |----------------------------------------------------|
+ // | | | T2 | |
+ // | |----|-------------------------------------|----|
+ // | | | C1 | | C2 | |
+ // | | |----| |----| |
+ // | | | | |
+ // | L1 | L2 | ChartArea (C0) | R1 |
+ // | | | | |
+ // | | |----| |----| |
+ // | | | C3 | | C4 | |
+ // | |----|-------------------------------------|----|
+ // | | | B1 | |
+ // |----------------------------------------------------|
+ // | B2 (Full Width) |
+ // |----------------------------------------------------|
+ //
+ // What we do to find the best sizing, we do the following
+ // 1. Determine the minimum size of the chart area.
+ // 2. Split the remaining width equally between each vertical axis
+ // 3. Split the remaining height equally between each horizontal axis
+ // 4. Give each layout the maximum size it can be. The layout will return it's minimum size
+ // 5. Adjust the sizes of each axis based on it's minimum reported size.
+ // 6. Refit each axis
+ // 7. Position each axis in the final location
+ // 8. Tell the chart the final location of the chart area
+ // 9. Tell any axes that overlay the chart area the positions of the chart area
- return me.minSize;
- },
- afterUpdate: noop,
+ // Step 1
+ var chartWidth = width - leftPadding - rightPadding;
+ var chartHeight = height - topPadding - bottomPadding;
+ var chartAreaWidth = chartWidth / 2; // min 50%
+ var chartAreaHeight = chartHeight / 2; // min 50%
- //
+ // Step 2
+ var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
- beforeSetDimensions: noop,
- setDimensions: function() {
- var me = this;
- // Set the unconstrained dimension before label rotation
- if (me.isHorizontal()) {
- // Reset position before calculating rotation
- me.width = me.maxWidth;
- me.left = 0;
- me.right = me.width;
- } else {
- me.height = me.maxHeight;
+ // Step 3
+ var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
- // Reset position before calculating rotation
- me.top = 0;
- me.bottom = me.height;
- }
+ // Step 4
+ var maxChartAreaWidth = chartWidth;
+ var maxChartAreaHeight = chartHeight;
+ var minBoxSizes = [];
- // Reset padding
- me.paddingLeft = 0;
- me.paddingTop = 0;
- me.paddingRight = 0;
- me.paddingBottom = 0;
+ function getMinimumBoxSize(box) {
+ var minSize;
+ var isHorizontal = box.isHorizontal();
- // Reset minSize
- me.minSize = {
- width: 0,
- height: 0
- };
- },
- afterSetDimensions: noop,
+ if (isHorizontal) {
+ minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
+ maxChartAreaHeight -= minSize.height;
+ } else {
+ minSize = box.update(verticalBoxWidth, chartAreaHeight);
+ maxChartAreaWidth -= minSize.width;
+ }
- //
+ minBoxSizes.push({
+ horizontal: isHorizontal,
+ minSize: minSize,
+ box: box,
+ });
+ }
- beforeBuildLabels: noop,
- buildLabels: function() {
- var me = this;
- me.legendItems = me.options.labels.generateLabels.call(me, me.chart);
- if(me.options.reverse){
- me.legendItems.reverse();
- }
- },
- afterBuildLabels: noop,
+ helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
- //
+ // If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
+ var maxHorizontalLeftPadding = 0;
+ var maxHorizontalRightPadding = 0;
+ var maxVerticalTopPadding = 0;
+ var maxVerticalBottomPadding = 0;
- beforeFit: noop,
- fit: function() {
- var me = this;
- var opts = me.options;
- var labelOpts = opts.labels;
- var display = opts.display;
+ helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) {
+ if (horizontalBox.getPadding) {
+ var boxPadding = horizontalBox.getPadding();
+ maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left);
+ maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right);
+ }
+ });
- var ctx = me.ctx;
+ helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) {
+ if (verticalBox.getPadding) {
+ var boxPadding = verticalBox.getPadding();
+ maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top);
+ maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom);
+ }
+ });
- var globalDefault = Chart.defaults.global,
- itemOrDefault = helpers.getValueOrDefault,
- fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
- fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
- fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
- labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
+ // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
+ // be if the axes are drawn at their minimum sizes.
+ // Steps 5 & 6
+ var totalLeftBoxesWidth = leftPadding;
+ var totalRightBoxesWidth = rightPadding;
+ var totalTopBoxesHeight = topPadding;
+ var totalBottomBoxesHeight = bottomPadding;
- // Reset hit boxes
- var hitboxes = me.legendHitBoxes = [];
+ // Function to fit a box
+ function fitBox(box) {
+ var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) {
+ return minBox.box === box;
+ });
- var minSize = me.minSize;
- var isHorizontal = me.isHorizontal();
+ if (minBoxSize) {
+ if (box.isHorizontal()) {
+ var scaleMargin = {
+ left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding),
+ right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding),
+ top: 0,
+ bottom: 0
+ };
- if (isHorizontal) {
- minSize.width = me.maxWidth; // fill all the width
- minSize.height = display ? 10 : 0;
- } else {
- minSize.width = display ? 10 : 0;
- minSize.height = me.maxHeight; // fill all the height
- }
-
- // Increase sizes here
- if (display) {
- ctx.font = labelFont;
-
- if (isHorizontal) {
- // Labels
-
- // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
- var lineWidths = me.lineWidths = [0];
- var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
-
- ctx.textAlign = "left";
- ctx.textBaseline = 'top';
-
- helpers.each(me.legendItems, function(legendItem, i) {
- var boxWidth = labelOpts.usePointStyle ?
- fontSize * Math.sqrt(2) :
- labelOpts.boxWidth;
-
- var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
- if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
- totalHeight += fontSize + (labelOpts.padding);
- lineWidths[lineWidths.length] = me.left;
- }
-
- // Store the hitbox width and height here. Final position will be updated in `draw`
- hitboxes[i] = {
- left: 0,
- top: 0,
- width: width,
- height: fontSize
- };
-
- lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
- });
-
- minSize.height += totalHeight;
-
- } else {
- var vPadding = labelOpts.padding;
- var columnWidths = me.columnWidths = [];
- var totalWidth = labelOpts.padding;
- var currentColWidth = 0;
- var currentColHeight = 0;
- var itemHeight = fontSize + vPadding;
-
- helpers.each(me.legendItems, function(legendItem, i) {
- // If usePointStyle is set, multiple boxWidth by 2 since it represents
- // the radius and not truly the width
- var boxWidth = labelOpts.usePointStyle ? 2 * labelOpts.boxWidth : labelOpts.boxWidth;
+ // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
+ // on the margin. Sometimes they need to increase in size slightly
+ box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
+ } else {
+ box.update(minBoxSize.minSize.width, maxChartAreaHeight);
+ }
+ }
+ }
- var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+ // Update, and calculate the left and right margins for the horizontal boxes
+ helpers.each(leftBoxes.concat(rightBoxes), fitBox);
- // If too tall, go to new column
- if (currentColHeight + itemHeight > minSize.height) {
- totalWidth += currentColWidth + labelOpts.padding;
- columnWidths.push(currentColWidth); // previous column width
+ helpers.each(leftBoxes, function(box) {
+ totalLeftBoxesWidth += box.width;
+ });
- currentColWidth = 0;
- currentColHeight = 0;
- }
+ helpers.each(rightBoxes, function(box) {
+ totalRightBoxesWidth += box.width;
+ });
- // Get max width
- currentColWidth = Math.max(currentColWidth, itemWidth);
- currentColHeight += itemHeight;
+ // Set the Left and Right margins for the horizontal boxes
+ helpers.each(topBoxes.concat(bottomBoxes), fitBox);
- // Store the hitbox width and height here. Final position will be updated in `draw`
- hitboxes[i] = {
- left: 0,
- top: 0,
- width: itemWidth,
- height: fontSize
- };
- });
+ // Figure out how much margin is on the top and bottom of the vertical boxes
+ helpers.each(topBoxes, function(box) {
+ totalTopBoxesHeight += box.height;
+ });
- totalWidth += currentColWidth;
- columnWidths.push(currentColWidth);
- minSize.width += totalWidth;
- }
- }
+ helpers.each(bottomBoxes, function(box) {
+ totalBottomBoxesHeight += box.height;
+ });
- me.width = minSize.width;
- me.height = minSize.height;
- },
- afterFit: noop,
+ function finalFitVerticalBox(box) {
+ var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) {
+ return minSize.box === box;
+ });
- // Shared Methods
- isHorizontal: function() {
- return this.options.position === "top" || this.options.position === "bottom";
- },
+ var scaleMargin = {
+ left: 0,
+ right: 0,
+ top: totalTopBoxesHeight,
+ bottom: totalBottomBoxesHeight
+ };
- // Actualy draw the legend on the canvas
- draw: function() {
- var me = this;
- var opts = me.options;
- var labelOpts = opts.labels;
- var globalDefault = Chart.defaults.global,
- lineDefault = globalDefault.elements.line,
- legendWidth = me.width,
- lineWidths = me.lineWidths;
+ if (minBoxSize) {
+ box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
+ }
+ }
- if (opts.display) {
- var ctx = me.ctx,
- cursor,
- itemOrDefault = helpers.getValueOrDefault,
- fontColor = itemOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor),
- fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
- fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
- fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
- labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
+ // Let the left layout know the final margin
+ helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
- // Canvas setup
- ctx.textAlign = "left";
- ctx.textBaseline = 'top';
- ctx.lineWidth = 0.5;
- ctx.strokeStyle = fontColor; // for strikethrough effect
- ctx.fillStyle = fontColor; // render in correct colour
- ctx.font = labelFont;
+ // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
+ totalLeftBoxesWidth = leftPadding;
+ totalRightBoxesWidth = rightPadding;
+ totalTopBoxesHeight = topPadding;
+ totalBottomBoxesHeight = bottomPadding;
- var boxWidth = labelOpts.boxWidth,
- hitboxes = me.legendHitBoxes;
+ helpers.each(leftBoxes, function(box) {
+ totalLeftBoxesWidth += box.width;
+ });
- // current position
- var drawLegendBox = function(x, y, legendItem) {
- if (isNaN(boxWidth) || boxWidth <= 0) {
- return;
- }
+ helpers.each(rightBoxes, function(box) {
+ totalRightBoxesWidth += box.width;
+ });
- // Set the ctx for the box
- ctx.save();
+ helpers.each(topBoxes, function(box) {
+ totalTopBoxesHeight += box.height;
+ });
+ helpers.each(bottomBoxes, function(box) {
+ totalBottomBoxesHeight += box.height;
+ });
- ctx.fillStyle = itemOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
- ctx.lineCap = itemOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
- ctx.lineDashOffset = itemOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
- ctx.lineJoin = itemOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
- ctx.lineWidth = itemOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
- ctx.strokeStyle = itemOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
+ // We may be adding some padding to account for rotated x axis labels
+ var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0);
+ totalLeftBoxesWidth += leftPaddingAddition;
+ totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0);
- if (ctx.setLineDash) {
- // IE 9 and 10 do not support line dash
- ctx.setLineDash(itemOrDefault(legendItem.lineDash, lineDefault.borderDash));
- }
+ var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0);
+ totalTopBoxesHeight += topPaddingAddition;
+ totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0);
- if (opts.labels && opts.labels.usePointStyle) {
- // Recalulate x and y for drawPoint() because its expecting
- // x and y to be center of figure (instead of top left)
- var radius = fontSize * Math.SQRT2 / 2;
- var offSet = radius / Math.SQRT2;
- var centerX = x + offSet;
- var centerY = y + offSet;
+ // Figure out if our chart area changed. This would occur if the dataset layout label rotation
+ // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
+ // without calling `fit` again
+ var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
+ var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
- // Draw pointStyle as legend symbol
- Chart.canvasHelpers.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
- }
- else {
- // Draw box as legend symbol
- ctx.strokeRect(x, y, boxWidth, fontSize);
- ctx.fillRect(x, y, boxWidth, fontSize);
- }
+ if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
+ helpers.each(leftBoxes, function(box) {
+ box.height = newMaxChartAreaHeight;
+ });
- ctx.restore();
- };
- var fillText = function(x, y, legendItem, textWidth) {
- ctx.fillText(legendItem.text, boxWidth + (fontSize / 2) + x, y);
+ helpers.each(rightBoxes, function(box) {
+ box.height = newMaxChartAreaHeight;
+ });
- if (legendItem.hidden) {
- // Strikethrough the text if hidden
- ctx.beginPath();
- ctx.lineWidth = 2;
- ctx.moveTo(boxWidth + (fontSize / 2) + x, y + (fontSize / 2));
- ctx.lineTo(boxWidth + (fontSize / 2) + x + textWidth, y + (fontSize / 2));
- ctx.stroke();
- }
- };
+ helpers.each(topBoxes, function(box) {
+ if (!box.fullWidth) {
+ box.width = newMaxChartAreaWidth;
+ }
+ });
- // Horizontal
- var isHorizontal = me.isHorizontal();
- if (isHorizontal) {
- cursor = {
- x: me.left + ((legendWidth - lineWidths[0]) / 2),
- y: me.top + labelOpts.padding,
- line: 0
- };
- } else {
- cursor = {
- x: me.left + labelOpts.padding,
- y: me.top + labelOpts.padding,
- line: 0
- };
- }
+ helpers.each(bottomBoxes, function(box) {
+ if (!box.fullWidth) {
+ box.width = newMaxChartAreaWidth;
+ }
+ });
- var itemHeight = fontSize + labelOpts.padding;
- helpers.each(me.legendItems, function(legendItem, i) {
- var textWidth = ctx.measureText(legendItem.text).width,
- width = labelOpts.usePointStyle ?
- fontSize + (fontSize / 2) + textWidth :
- boxWidth + (fontSize / 2) + textWidth,
- x = cursor.x,
- y = cursor.y;
+ maxChartAreaHeight = newMaxChartAreaHeight;
+ maxChartAreaWidth = newMaxChartAreaWidth;
+ }
- if (isHorizontal) {
- if (x + width >= legendWidth) {
- y = cursor.y += itemHeight;
- cursor.line++;
- x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
- }
- } else {
- if (y + itemHeight > me.bottom) {
- x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
- y = cursor.y = me.top;
- cursor.line++;
- }
- }
+ // Step 7 - Position the boxes
+ var left = leftPadding + leftPaddingAddition;
+ var top = topPadding + topPaddingAddition;
- drawLegendBox(x, y, legendItem);
+ function placeBox(box) {
+ if (box.isHorizontal()) {
+ box.left = box.fullWidth ? leftPadding : totalLeftBoxesWidth;
+ box.right = box.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth;
+ box.top = top;
+ box.bottom = top + box.height;
- hitboxes[i].left = x;
- hitboxes[i].top = y;
+ // Move to next point
+ top = box.bottom;
- // Fill the actual label
- fillText(x, y, legendItem, textWidth);
+ } else {
- if (isHorizontal) {
- cursor.x += width + (labelOpts.padding);
- } else {
- cursor.y += itemHeight;
- }
+ box.left = left;
+ box.right = left + box.width;
+ box.top = totalTopBoxesHeight;
+ box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
- });
- }
- },
+ // Move to next point
+ left = box.right;
+ }
+ }
- // Handle an event
- handleEvent: function(e) {
- var me = this;
- var position = helpers.getRelativePosition(e, me.chart.chart),
- x = position.x,
- y = position.y,
- opts = me.options;
+ helpers.each(leftBoxes.concat(topBoxes), placeBox);
- if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
- // See if we are touching one of the dataset boxes
- var lh = me.legendHitBoxes;
- for (var i = 0; i < lh.length; ++i) {
- var hitBox = lh[i];
+ // Account for chart width and height
+ left += maxChartAreaWidth;
+ top += maxChartAreaHeight;
- if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
- // Touching an element
- if (opts.onClick) {
- opts.onClick.call(me, e, me.legendItems[i]);
- }
- break;
- }
- }
- }
- }
- });
+ helpers.each(rightBoxes, placeBox);
+ helpers.each(bottomBoxes, placeBox);
- // Register the legend plugin
- Chart.plugins.register({
- beforeInit: function(chartInstance) {
- var opts = chartInstance.options;
- var legendOpts = opts.legend;
+ // Step 8
+ chart.chartArea = {
+ left: totalLeftBoxesWidth,
+ top: totalTopBoxesHeight,
+ right: totalLeftBoxesWidth + maxChartAreaWidth,
+ bottom: totalTopBoxesHeight + maxChartAreaHeight
+ };
- if (legendOpts) {
- chartInstance.legend = new Chart.Legend({
- ctx: chartInstance.chart.ctx,
- options: legendOpts,
- chart: chartInstance
- });
+ // Step 9
+ helpers.each(chartAreaBoxes, function(box) {
+ box.left = chart.chartArea.left;
+ box.top = chart.chartArea.top;
+ box.right = chart.chartArea.right;
+ box.bottom = chart.chartArea.bottom;
- Chart.layoutService.addBox(chartInstance, chartInstance.legend);
- }
- }
- });
-};
+ box.update(maxChartAreaWidth, maxChartAreaHeight);
+ });
+ }
+ };
+ };
},{}],30:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var noop = Chart.helpers.noop;
+ var helpers = Chart.helpers;
- /**
- * The plugin service singleton
- * @namespace Chart.plugins
- * @since 2.1.0
- */
- Chart.plugins = {
- _plugins: [],
+ Chart.defaults.global.plugins = {};
- /**
- * Registers the given plugin(s) if not already registered.
- * @param {Array|Object} plugins plugin instance(s).
- */
- register: function(plugins) {
- var p = this._plugins;
- ([]).concat(plugins).forEach(function(plugin) {
- if (p.indexOf(plugin) === -1) {
- p.push(plugin);
- }
- });
- },
+ /**
+ * The plugin service singleton
+ * @namespace Chart.plugins
+ * @since 2.1.0
+ */
+ Chart.plugins = {
+ /**
+ * Globally registered plugins.
+ * @private
+ */
+ _plugins: [],
- /**
- * Unregisters the given plugin(s) only if registered.
- * @param {Array|Object} plugins plugin instance(s).
- */
- unregister: function(plugins) {
- var p = this._plugins;
- ([]).concat(plugins).forEach(function(plugin) {
- var idx = p.indexOf(plugin);
- if (idx !== -1) {
- p.splice(idx, 1);
- }
- });
- },
+ /**
+ * This identifier is used to invalidate the descriptors cache attached to each chart
+ * when a global plugin is registered or unregistered. In this case, the cache ID is
+ * incremented and descriptors are regenerated during following API calls.
+ * @private
+ */
+ _cacheId: 0,
- /**
- * Remove all registered p^lugins.
- * @since 2.1.5
- */
- clear: function() {
- this._plugins = [];
- },
+ /**
+ * Registers the given plugin(s) if not already registered.
+ * @param {Array|Object} plugins plugin instance(s).
+ */
+ register: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ if (p.indexOf(plugin) === -1) {
+ p.push(plugin);
+ }
+ });
- /**
- * Returns the number of registered plugins?
- * @returns {Number}
- * @since 2.1.5
- */
- count: function() {
- return this._plugins.length;
- },
+ this._cacheId++;
+ },
- /**
- * Returns all registered plugin intances.
- * @returns {Array} array of plugin objects.
- * @since 2.1.5
- */
- getAll: function() {
- return this._plugins;
- },
+ /**
+ * Unregisters the given plugin(s) only if registered.
+ * @param {Array|Object} plugins plugin instance(s).
+ */
+ unregister: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ var idx = p.indexOf(plugin);
+ if (idx !== -1) {
+ p.splice(idx, 1);
+ }
+ });
- /**
- * Calls registered plugins on the specified extension, with the given args. This
- * method immediately returns as soon as a plugin explicitly returns false. The
- * returned value can be used, for instance, to interrupt the current action.
- * @param {String} extension the name of the plugin method to call (e.g. 'beforeUpdate').
- * @param {Array} [args] extra arguments to apply to the extension call.
- * @returns {Boolean} false if any of the plugins return false, else returns true.
- */
- notify: function(extension, args) {
- var plugins = this._plugins;
- var ilen = plugins.length;
- var i, plugin;
+ this._cacheId++;
+ },
- for (i=0; i<ilen; ++i) {
- plugin = plugins[i];
- if (typeof plugin[extension] === 'function') {
- if (plugin[extension].apply(plugin, args || []) === false) {
- return false;
- }
- }
- }
+ /**
+ * Remove all registered plugins.
+ * @since 2.1.5
+ */
+ clear: function() {
+ this._plugins = [];
+ this._cacheId++;
+ },
- return true;
- }
- };
+ /**
+ * Returns the number of registered plugins?
+ * @returns {Number}
+ * @since 2.1.5
+ */
+ count: function() {
+ return this._plugins.length;
+ },
- /**
- * Plugin extension methods.
- * @interface Chart.PluginBase
- * @since 2.1.0
- */
- Chart.PluginBase = Chart.Element.extend({
- // Called at start of chart init
- beforeInit: noop,
+ /**
+ * Returns all registered plugin instances.
+ * @returns {Array} array of plugin objects.
+ * @since 2.1.5
+ */
+ getAll: function() {
+ return this._plugins;
+ },
- // Called at end of chart init
- afterInit: noop,
+ /**
+ * Calls enabled plugins for `chart` on the specified hook and with the given args.
+ * This method immediately returns as soon as a plugin explicitly returns false. The
+ * returned value can be used, for instance, to interrupt the current action.
+ * @param {Object} chart - The chart instance for which plugins should be called.
+ * @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
+ * @param {Array} [args] - Extra arguments to apply to the hook call.
+ * @returns {Boolean} false if any of the plugins return false, else returns true.
+ */
+ notify: function(chart, hook, args) {
+ var descriptors = this.descriptors(chart);
+ var ilen = descriptors.length;
+ var i, descriptor, plugin, params, method;
- // Called at start of update
- beforeUpdate: noop,
+ for (i=0; i<ilen; ++i) {
+ descriptor = descriptors[i];
+ plugin = descriptor.plugin;
+ method = plugin[hook];
+ if (typeof method === 'function') {
+ params = [chart].concat(args || []);
+ params.push(descriptor.options);
+ if (method.apply(plugin, params) === false) {
+ return false;
+ }
+ }
+ }
- // Called at end of update
- afterUpdate: noop,
+ return true;
+ },
- // Called at start of draw
- beforeDraw: noop,
+ /**
+ * Returns descriptors of enabled plugins for the given chart.
+ * @returns {Array} [{ plugin, options }]
+ * @private
+ */
+ descriptors: function(chart) {
+ var cache = chart._plugins || (chart._plugins = {});
+ if (cache.id === this._cacheId) {
+ return cache.descriptors;
+ }
- // Called at end of draw
- afterDraw: noop,
+ var plugins = [];
+ var descriptors = [];
+ var config = (chart && chart.config) || {};
+ var defaults = Chart.defaults.global.plugins;
+ var options = (config.options && config.options.plugins) || {};
- // Called during destroy
- destroy: noop
- });
+ this._plugins.concat(config.plugins || []).forEach(function(plugin) {
+ var idx = plugins.indexOf(plugin);
+ if (idx !== -1) {
+ return;
+ }
- /**
- * Provided for backward compatibility, use Chart.plugins instead
- * @namespace Chart.pluginService
- * @deprecated since version 2.1.5
- * @todo remove me at version 3
- */
- Chart.pluginService = Chart.plugins;
-};
+ var id = plugin.id;
+ var opts = options[id];
+ if (opts === false) {
+ return;
+ }
+
+ if (opts === true) {
+ opts = helpers.clone(defaults[id]);
+ }
+
+ plugins.push(plugin);
+ descriptors.push({
+ plugin: plugin,
+ options: opts || {}
+ });
+ });
+
+ cache.descriptors = descriptors;
+ cache.id = this._cacheId;
+ return descriptors;
+ }
+ };
+
+ /**
+ * Plugin extension hooks.
+ * @interface IPlugin
+ * @since 2.1.0
+ */
+ /**
+ * @method IPlugin#beforeInit
+ * @desc Called before initializing `chart`.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#afterInit
+ * @desc Called after `chart` has been initialized and before the first update.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeUpdate
+ * @desc Called before updating `chart`. If any plugin returns `false`, the update
+ * is cancelled (and thus subsequent render(s)) until another `update` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart update.
+ */
+ /**
+ * @method IPlugin#afterUpdate
+ * @desc Called after `chart` has been updated and before rendering. Note that this
+ * hook will not be called if the chart update has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeDatasetsUpdate
+ * @desc Called before updating the `chart` datasets. If any plugin returns `false`,
+ * the datasets update is cancelled until another `update` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} false to cancel the datasets update.
+ * @since version 2.1.5
+ */
+ /**
+ * @method IPlugin#afterDatasetsUpdate
+ * @desc Called after the `chart` datasets have been updated. Note that this hook
+ * will not be called if the datasets update has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ * @since version 2.1.5
+ */
+ /**
+ * @method IPlugin#beforeDatasetUpdate
+ * @desc Called before updating the `chart` dataset at the given `args.index`. If any plugin
+ * returns `false`, the datasets update is cancelled until another `update` is triggered.
+ * @param {Chart} chart - The chart instance.
+ * @param {Object} args - The call arguments.
+ * @param {Object} args.index - The dataset index.
+ * @param {Number} args.meta - The dataset metadata.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart datasets drawing.
+ */
+ /**
+ * @method IPlugin#afterDatasetUpdate
+ * @desc Called after the `chart` datasets at the given `args.index` has been updated. Note
+ * that this hook will not be called if the datasets update has been previously cancelled.
+ * @param {Chart} chart - The chart instance.
+ * @param {Object} args - The call arguments.
+ * @param {Object} args.index - The dataset index.
+ * @param {Number} args.meta - The dataset metadata.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeLayout
+ * @desc Called before laying out `chart`. If any plugin returns `false`,
+ * the layout update is cancelled until another `update` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart layout.
+ */
+ /**
+ * @method IPlugin#afterLayout
+ * @desc Called after the `chart` has been layed out. Note that this hook will not
+ * be called if the layout update has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeRender
+ * @desc Called before rendering `chart`. If any plugin returns `false`,
+ * the rendering is cancelled until another `render` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart rendering.
+ */
+ /**
+ * @method IPlugin#afterRender
+ * @desc Called after the `chart` has been fully rendered (and animation completed). Note
+ * that this hook will not be called if the rendering has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeDraw
+ * @desc Called before drawing `chart` at every animation frame specified by the given
+ * easing value. If any plugin returns `false`, the frame drawing is cancelled until
+ * another `render` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart drawing.
+ */
+ /**
+ * @method IPlugin#afterDraw
+ * @desc Called after the `chart` has been drawn for the specific easing value. Note
+ * that this hook will not be called if the drawing has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeDatasetsDraw
+ * @desc Called before drawing the `chart` datasets. If any plugin returns `false`,
+ * the datasets drawing is cancelled until another `render` is triggered.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart datasets drawing.
+ */
+ /**
+ * @method IPlugin#afterDatasetsDraw
+ * @desc Called after the `chart` datasets have been drawn. Note that this hook
+ * will not be called if the datasets drawing has been previously cancelled.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeDatasetDraw
+ * @desc Called before drawing the `chart` dataset at the given `args.index` (datasets
+ * are drawn in the reverse order). If any plugin returns `false`, the datasets drawing
+ * is cancelled until another `render` is triggered.
+ * @param {Chart} chart - The chart instance.
+ * @param {Object} args - The call arguments.
+ * @param {Object} args.index - The dataset index.
+ * @param {Number} args.meta - The dataset metadata.
+ * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ * @returns {Boolean} `false` to cancel the chart datasets drawing.
+ */
+ /**
+ * @method IPlugin#afterDatasetDraw
+ * @desc Called after the `chart` datasets at the given `args.index` have been drawn
+ * (datasets are drawn in the reverse order). Note that this hook will not be called
+ * if the datasets drawing has been previously cancelled.
+ * @param {Chart} chart - The chart instance.
+ * @param {Object} args - The call arguments.
+ * @param {Object} args.index - The dataset index.
+ * @param {Number} args.meta - The dataset metadata.
+ * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#beforeEvent
+ * @desc Called before processing the specified `event`. If any plugin returns `false`,
+ * the event will be discarded.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {IEvent} event - The event object.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#afterEvent
+ * @desc Called after the `event` has been consumed. Note that this hook
+ * will not be called if the `event` has been previously discarded.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {IEvent} event - The event object.
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#resize
+ * @desc Called after the chart as been resized.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Number} size - The new canvas display size (eq. canvas.style width & height).
+ * @param {Object} options - The plugin options.
+ */
+ /**
+ * @method IPlugin#destroy
+ * @desc Called after the chart as been destroyed.
+ * @param {Chart.Controller} chart - The chart instance.
+ * @param {Object} options - The plugin options.
+ */
+
+ /**
+ * Provided for backward compatibility, use Chart.plugins instead
+ * @namespace Chart.pluginService
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+ Chart.pluginService = Chart.plugins;
+
+ /**
+ * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
+ * effect, instead simply create/register plugins via plain JavaScript objects.
+ * @interface Chart.PluginBase
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+ Chart.PluginBase = Chart.Element.extend({});
+ };
},{}],31:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.scale = {
- display: true,
- position: "left",
+ Chart.defaults.scale = {
+ display: true,
+ position: 'left',
- // grid line settings
- gridLines: {
- display: true,
- color: "rgba(0, 0, 0, 0.1)",
- lineWidth: 1,
- drawBorder: true,
- drawOnChartArea: true,
- drawTicks: true,
- tickMarkLength: 10,
- zeroLineWidth: 1,
- zeroLineColor: "rgba(0,0,0,0.25)",
- offsetGridLines: false
- },
+ // grid line settings
+ gridLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1,
+ drawBorder: true,
+ drawOnChartArea: true,
+ drawTicks: true,
+ tickMarkLength: 10,
+ zeroLineWidth: 1,
+ zeroLineColor: 'rgba(0,0,0,0.25)',
+ zeroLineBorderDash: [],
+ zeroLineBorderDashOffset: 0.0,
+ offsetGridLines: false,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
- // scale label
- scaleLabel: {
- // actual label
- labelString: '',
+ // scale label
+ scaleLabel: {
+ // actual label
+ labelString: '',
- // display property
- display: false
- },
+ // display property
+ display: false
+ },
- // label settings
- ticks: {
- beginAtZero: false,
- minRotation: 0,
- maxRotation: 50,
- mirror: false,
- padding: 10,
- reverse: false,
- display: true,
- autoSkip: true,
- autoSkipPadding: 0,
- labelOffset: 0,
- // We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
- callback: function(value) {
- return helpers.isArray(value) ? value : '' + value;
- }
- }
- };
+ // label settings
+ ticks: {
+ beginAtZero: false,
+ minRotation: 0,
+ maxRotation: 50,
+ mirror: false,
+ padding: 0,
+ reverse: false,
+ display: true,
+ autoSkip: true,
+ autoSkipPadding: 0,
+ labelOffset: 0,
+ // We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
+ callback: Chart.Ticks.formatters.values
+ }
+ };
- Chart.Scale = Chart.Element.extend({
+ function computeTextSize(context, tick, font) {
+ return helpers.isArray(tick) ?
+ helpers.longestText(context, font, tick) :
+ context.measureText(tick).width;
+ }
- // These methods are ordered by lifecyle. Utilities then follow.
- // Any function defined here is inherited by all scale types.
- // Any function can be extended by the scale type
+ function parseFontOptions(options) {
+ var getValueOrDefault = helpers.getValueOrDefault;
+ var globalDefaults = Chart.defaults.global;
+ var size = getValueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
+ var style = getValueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle);
+ var family = getValueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily);
- beforeUpdate: function() {
- helpers.callCallback(this.options.beforeUpdate, [this]);
- },
- update: function(maxWidth, maxHeight, margins) {
- var me = this;
+ return {
+ size: size,
+ style: style,
+ family: family,
+ font: helpers.fontString(size, style, family)
+ };
+ }
- // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- me.beforeUpdate();
+ Chart.Scale = Chart.Element.extend({
+ /**
+ * Get the padding needed for the scale
+ * @method getPadding
+ * @private
+ * @returns {Padding} the necessary padding
+ */
+ getPadding: function() {
+ var me = this;
+ return {
+ left: me.paddingLeft || 0,
+ top: me.paddingTop || 0,
+ right: me.paddingRight || 0,
+ bottom: me.paddingBottom || 0
+ };
+ },
- // Absorb the master measurements
- me.maxWidth = maxWidth;
- me.maxHeight = maxHeight;
- me.margins = helpers.extend({
- left: 0,
- right: 0,
- top: 0,
- bottom: 0
- }, margins);
+ // These methods are ordered by lifecyle. Utilities then follow.
+ // Any function defined here is inherited by all scale types.
+ // Any function can be extended by the scale type
- // Dimensions
- me.beforeSetDimensions();
- me.setDimensions();
- me.afterSetDimensions();
+ beforeUpdate: function() {
+ helpers.callback(this.options.beforeUpdate, [this]);
+ },
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
- // Data min/max
- me.beforeDataLimits();
- me.determineDataLimits();
- me.afterDataLimits();
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
- // Ticks
- me.beforeBuildTicks();
- me.buildTicks();
- me.afterBuildTicks();
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = helpers.extend({
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ }, margins);
+ me.longestTextCache = me.longestTextCache || {};
- me.beforeTickToLabelConversion();
- me.convertTicksToLabels();
- me.afterTickToLabelConversion();
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
- // Tick Rotation
- me.beforeCalculateTickRotation();
- me.calculateTickRotation();
- me.afterCalculateTickRotation();
- // Fit
- me.beforeFit();
- me.fit();
- me.afterFit();
- //
- me.afterUpdate();
+ // Data min/max
+ me.beforeDataLimits();
+ me.determineDataLimits();
+ me.afterDataLimits();
- return me.minSize;
+ // Ticks
+ me.beforeBuildTicks();
+ me.buildTicks();
+ me.afterBuildTicks();
- },
- afterUpdate: function() {
- helpers.callCallback(this.options.afterUpdate, [this]);
- },
+ me.beforeTickToLabelConversion();
+ me.convertTicksToLabels();
+ me.afterTickToLabelConversion();
- //
+ // Tick Rotation
+ me.beforeCalculateTickRotation();
+ me.calculateTickRotation();
+ me.afterCalculateTickRotation();
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
- beforeSetDimensions: function() {
- helpers.callCallback(this.options.beforeSetDimensions, [this]);
- },
- setDimensions: function() {
- var me = this;
- // Set the unconstrained dimension before label rotation
- if (me.isHorizontal()) {
- // Reset position before calculating rotation
- me.width = me.maxWidth;
- me.left = 0;
- me.right = me.width;
- } else {
- me.height = me.maxHeight;
+ return me.minSize;
- // Reset position before calculating rotation
- me.top = 0;
- me.bottom = me.height;
- }
+ },
+ afterUpdate: function() {
+ helpers.callback(this.options.afterUpdate, [this]);
+ },
- // Reset padding
- me.paddingLeft = 0;
- me.paddingTop = 0;
- me.paddingRight = 0;
- me.paddingBottom = 0;
- },
- afterSetDimensions: function() {
- helpers.callCallback(this.options.afterSetDimensions, [this]);
- },
+ //
- // Data limits
- beforeDataLimits: function() {
- helpers.callCallback(this.options.beforeDataLimits, [this]);
- },
- determineDataLimits: helpers.noop,
- afterDataLimits: function() {
- helpers.callCallback(this.options.afterDataLimits, [this]);
- },
+ beforeSetDimensions: function() {
+ helpers.callback(this.options.beforeSetDimensions, [this]);
+ },
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
- //
- beforeBuildTicks: function() {
- helpers.callCallback(this.options.beforeBuildTicks, [this]);
- },
- buildTicks: helpers.noop,
- afterBuildTicks: function() {
- helpers.callCallback(this.options.afterBuildTicks, [this]);
- },
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
- beforeTickToLabelConversion: function() {
- helpers.callCallback(this.options.beforeTickToLabelConversion, [this]);
- },
- convertTicksToLabels: function() {
- var me = this;
- // Convert ticks to strings
- me.ticks = me.ticks.map(function(numericalTick, index, ticks) {
- if (me.options.ticks.userCallback) {
- return me.options.ticks.userCallback(numericalTick, index, ticks);
- }
- return me.options.ticks.callback(numericalTick, index, ticks);
- },
- me);
- },
- afterTickToLabelConversion: function() {
- helpers.callCallback(this.options.afterTickToLabelConversion, [this]);
- },
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+ },
+ afterSetDimensions: function() {
+ helpers.callback(this.options.afterSetDimensions, [this]);
+ },
- //
+ // Data limits
+ beforeDataLimits: function() {
+ helpers.callback(this.options.beforeDataLimits, [this]);
+ },
+ determineDataLimits: helpers.noop,
+ afterDataLimits: function() {
+ helpers.callback(this.options.afterDataLimits, [this]);
+ },
- beforeCalculateTickRotation: function() {
- helpers.callCallback(this.options.beforeCalculateTickRotation, [this]);
- },
- calculateTickRotation: function() {
- var me = this;
- var context = me.ctx;
- var globalDefaults = Chart.defaults.global;
- var optionTicks = me.options.ticks;
+ //
+ beforeBuildTicks: function() {
+ helpers.callback(this.options.beforeBuildTicks, [this]);
+ },
+ buildTicks: helpers.noop,
+ afterBuildTicks: function() {
+ helpers.callback(this.options.afterBuildTicks, [this]);
+ },
- //Get the width of each grid by calculating the difference
- //between x offsets between 0 and 1.
- var tickFontSize = helpers.getValueOrDefault(optionTicks.fontSize, globalDefaults.defaultFontSize);
- var tickFontStyle = helpers.getValueOrDefault(optionTicks.fontStyle, globalDefaults.defaultFontStyle);
- var tickFontFamily = helpers.getValueOrDefault(optionTicks.fontFamily, globalDefaults.defaultFontFamily);
- var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
- context.font = tickLabelFont;
+ beforeTickToLabelConversion: function() {
+ helpers.callback(this.options.beforeTickToLabelConversion, [this]);
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ // Convert ticks to strings
+ var tickOpts = me.options.ticks;
+ me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback);
+ },
+ afterTickToLabelConversion: function() {
+ helpers.callback(this.options.afterTickToLabelConversion, [this]);
+ },
- var firstWidth = context.measureText(me.ticks[0]).width;
- var lastWidth = context.measureText(me.ticks[me.ticks.length - 1]).width;
- var firstRotated;
+ //
- me.labelRotation = optionTicks.minRotation || 0;
- me.paddingRight = 0;
- me.paddingLeft = 0;
+ beforeCalculateTickRotation: function() {
+ helpers.callback(this.options.beforeCalculateTickRotation, [this]);
+ },
+ calculateTickRotation: function() {
+ var me = this;
+ var context = me.ctx;
+ var tickOpts = me.options.ticks;
- if (me.options.display) {
- if (me.isHorizontal()) {
- me.paddingRight = lastWidth / 2 + 3;
- me.paddingLeft = firstWidth / 2 + 3;
+ // Get the width of each grid by calculating the difference
+ // between x offsets between 0 and 1.
+ var tickFont = parseFontOptions(tickOpts);
+ context.font = tickFont.font;
- if (!me.longestTextCache) {
- me.longestTextCache = {};
- }
- var originalLabelWidth = helpers.longestText(context, tickLabelFont, me.ticks, me.longestTextCache);
- var labelWidth = originalLabelWidth;
- var cosRotation;
- var sinRotation;
+ var labelRotation = tickOpts.minRotation || 0;
- // Allow 3 pixels x2 padding either side for label readability
- // only the index matters for a dataset scale, but we want a consistent interface between scales
- var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
+ if (me.options.display && me.isHorizontal()) {
+ var originalLabelWidth = helpers.longestText(context, tickFont.font, me.ticks, me.longestTextCache);
+ var labelWidth = originalLabelWidth;
+ var cosRotation;
+ var sinRotation;
- //Max label rotation can be set or default to 90 - also act as a loop counter
- while (labelWidth > tickWidth && me.labelRotation < optionTicks.maxRotation) {
- cosRotation = Math.cos(helpers.toRadians(me.labelRotation));
- sinRotation = Math.sin(helpers.toRadians(me.labelRotation));
+ // Allow 3 pixels x2 padding either side for label readability
+ var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
- firstRotated = cosRotation * firstWidth;
+ // Max label rotation can be set or default to 90 - also act as a loop counter
+ while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
+ var angleRadians = helpers.toRadians(labelRotation);
+ cosRotation = Math.cos(angleRadians);
+ sinRotation = Math.sin(angleRadians);
- // We're right aligning the text now.
- if (firstRotated + tickFontSize / 2 > me.yLabelWidth) {
- me.paddingLeft = firstRotated + tickFontSize / 2;
- }
+ if (sinRotation * originalLabelWidth > me.maxHeight) {
+ // go back one step
+ labelRotation--;
+ break;
+ }
- me.paddingRight = tickFontSize / 2;
+ labelRotation++;
+ labelWidth = cosRotation * originalLabelWidth;
+ }
+ }
- if (sinRotation * originalLabelWidth > me.maxHeight) {
- // go back one step
- me.labelRotation--;
- break;
- }
+ me.labelRotation = labelRotation;
+ },
+ afterCalculateTickRotation: function() {
+ helpers.callback(this.options.afterCalculateTickRotation, [this]);
+ },
- me.labelRotation++;
- labelWidth = cosRotation * originalLabelWidth;
- }
- }
- }
+ //
- if (me.margins) {
- me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
- me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
- }
- },
- afterCalculateTickRotation: function() {
- helpers.callCallback(this.options.afterCalculateTickRotation, [this]);
- },
+ beforeFit: function() {
+ helpers.callback(this.options.beforeFit, [this]);
+ },
+ fit: function() {
+ var me = this;
+ // Reset
+ var minSize = me.minSize = {
+ width: 0,
+ height: 0
+ };
- //
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ var scaleLabelOpts = opts.scaleLabel;
+ var gridLineOpts = opts.gridLines;
+ var display = opts.display;
+ var isHorizontal = me.isHorizontal();
- beforeFit: function() {
- helpers.callCallback(this.options.beforeFit, [this]);
- },
- fit: function() {
- var me = this;
- // Reset
- var minSize = me.minSize = {
- width: 0,
- height: 0
- };
+ var tickFont = parseFontOptions(tickOpts);
+ var scaleLabelFontSize = parseFontOptions(scaleLabelOpts).size * 1.5;
+ var tickMarkLength = opts.gridLines.tickMarkLength;
- var opts = me.options;
- var globalDefaults = Chart.defaults.global;
- var tickOpts = opts.ticks;
- var scaleLabelOpts = opts.scaleLabel;
- var display = opts.display;
- var isHorizontal = me.isHorizontal();
+ // Width
+ if (isHorizontal) {
+ // subtract the margins to line up with the chartArea if we are a full width scale
+ minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
+ } else {
+ minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ }
- var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
- var tickFontStyle = helpers.getValueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
- var tickFontFamily = helpers.getValueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
- var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
+ // height
+ if (isHorizontal) {
+ minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ } else {
+ minSize.height = me.maxHeight; // fill all the height
+ }
- var scaleLabelFontSize = helpers.getValueOrDefault(scaleLabelOpts.fontSize, globalDefaults.defaultFontSize);
+ // Are we showing a title for the scale?
+ if (scaleLabelOpts.display && display) {
+ if (isHorizontal) {
+ minSize.height += scaleLabelFontSize;
+ } else {
+ minSize.width += scaleLabelFontSize;
+ }
+ }
- var tickMarkLength = opts.gridLines.tickMarkLength;
+ // Don't bother fitting the ticks if we are not showing them
+ if (tickOpts.display && display) {
+ var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, me.ticks, me.longestTextCache);
+ var tallestLabelHeightInLines = helpers.numberOfLabelLines(me.ticks);
+ var lineSpace = tickFont.size * 0.5;
- // Width
- if (isHorizontal) {
- // subtract the margins to line up with the chartArea if we are a full width scale
- minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
- } else {
- minSize.width = display ? tickMarkLength : 0;
- }
+ if (isHorizontal) {
+ // A horizontal axis is more constrained by the height.
+ me.longestLabelWidth = largestTextWidth;
- // height
- if (isHorizontal) {
- minSize.height = display ? tickMarkLength : 0;
- } else {
- minSize.height = me.maxHeight; // fill all the height
- }
+ var angleRadians = helpers.toRadians(me.labelRotation);
+ var cosRotation = Math.cos(angleRadians);
+ var sinRotation = Math.sin(angleRadians);
- // Are we showing a title for the scale?
- if (scaleLabelOpts.display && display) {
- if (isHorizontal) {
- minSize.height += (scaleLabelFontSize * 1.5);
- } else {
- minSize.width += (scaleLabelFontSize * 1.5);
- }
- }
+ // TODO - improve this calculation
+ var labelHeight = (sinRotation * largestTextWidth)
+ + (tickFont.size * tallestLabelHeightInLines)
+ + (lineSpace * tallestLabelHeightInLines);
- if (tickOpts.display && display) {
- // Don't bother fitting the ticks if we are not showing them
- if (!me.longestTextCache) {
- me.longestTextCache = {};
- }
+ minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight);
+ me.ctx.font = tickFont.font;
- var largestTextWidth = helpers.longestText(me.ctx, tickLabelFont, me.ticks, me.longestTextCache);
- var tallestLabelHeightInLines = helpers.numberOfLabelLines(me.ticks);
- var lineSpace = tickFontSize * 0.5;
+ var firstTick = me.ticks[0];
+ var firstLabelWidth = computeTextSize(me.ctx, firstTick, tickFont.font);
- if (isHorizontal) {
- // A horizontal axis is more constrained by the height.
- me.longestLabelWidth = largestTextWidth;
+ var lastTick = me.ticks[me.ticks.length - 1];
+ var lastLabelWidth = computeTextSize(me.ctx, lastTick, tickFont.font);
- // TODO - improve this calculation
- var labelHeight = (Math.sin(helpers.toRadians(me.labelRotation)) * me.longestLabelWidth) + (tickFontSize * tallestLabelHeightInLines) + (lineSpace * tallestLabelHeightInLines);
+ // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned which means that the right padding is dominated
+ // by the font height
+ if (me.labelRotation !== 0) {
+ me.paddingLeft = opts.position === 'bottom'? (cosRotation * firstLabelWidth) + 3: (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges
+ me.paddingRight = opts.position === 'bottom'? (cosRotation * lineSpace) + 3: (cosRotation * lastLabelWidth) + 3;
+ } else {
+ me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
+ me.paddingRight = lastLabelWidth / 2 + 3;
+ }
+ } else {
+ // A vertical axis is more constrained by the width. Labels are the dominant factor here, so get that length first
+ // Account for padding
- minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight);
- me.ctx.font = tickLabelFont;
+ if (tickOpts.mirror) {
+ largestTextWidth = 0;
+ } else {
+ largestTextWidth += me.options.ticks.padding;
+ }
+ minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
+ me.paddingTop = tickFont.size / 2;
+ me.paddingBottom = tickFont.size / 2;
+ }
+ }
- var firstLabelWidth = me.ctx.measureText(me.ticks[0]).width;
- var lastLabelWidth = me.ctx.measureText(me.ticks[me.ticks.length - 1]).width;
+ me.handleMargins();
- // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned which means that the right padding is dominated
- // by the font height
- var cosRotation = Math.cos(helpers.toRadians(me.labelRotation));
- var sinRotation = Math.sin(helpers.toRadians(me.labelRotation));
- me.paddingLeft = me.labelRotation !== 0 ? (cosRotation * firstLabelWidth) + 3 : firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
- me.paddingRight = me.labelRotation !== 0 ? (sinRotation * (tickFontSize / 2)) + 3 : lastLabelWidth / 2 + 3; // when rotated
- } else {
- // A vertical axis is more constrained by the width. Labels are the dominant factor here, so get that length first
- var maxLabelWidth = me.maxWidth - minSize.width;
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
- // Account for padding
- var mirror = tickOpts.mirror;
- if (!mirror) {
- largestTextWidth += me.options.ticks.padding;
- } else {
- // If mirrored text is on the inside so don't expand
- largestTextWidth = 0;
- }
+ /**
+ * Handle margins and padding interactions
+ * @private
+ */
+ handleMargins: function() {
+ var me = this;
+ if (me.margins) {
+ me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
+ me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
+ me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
+ me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
+ }
+ },
- if (largestTextWidth < maxLabelWidth) {
- // We don't need all the room
- minSize.width += largestTextWidth;
- } else {
- // Expand to max size
- minSize.width = me.maxWidth;
- }
+ afterFit: function() {
+ helpers.callback(this.options.afterFit, [this]);
+ },
- me.paddingTop = tickFontSize / 2;
- me.paddingBottom = tickFontSize / 2;
- }
- }
-
- if (me.margins) {
- me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
- me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
- me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
- me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
- }
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+ isFullWidth: function() {
+ return (this.options.fullWidth);
+ },
- me.width = minSize.width;
- me.height = minSize.height;
+ // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
+ getRightValue: function(rawValue) {
+ // Null and undefined values first
+ if (rawValue === null || typeof(rawValue) === 'undefined') {
+ return NaN;
+ }
+ // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
+ if (typeof(rawValue) === 'number' && !isFinite(rawValue)) {
+ return NaN;
+ }
+ // If it is in fact an object, dive in one more level
+ if (typeof(rawValue) === 'object') {
+ if ((rawValue instanceof Date) || (rawValue.isValid)) {
+ return rawValue;
+ }
+ return this.getRightValue(this.isHorizontal() ? rawValue.x : rawValue.y);
+ }
- },
- afterFit: function() {
- helpers.callCallback(this.options.afterFit, [this]);
- },
+ // Value is good, return it
+ return rawValue;
+ },
- // Shared Methods
- isHorizontal: function() {
- return this.options.position === "top" || this.options.position === "bottom";
- },
- isFullWidth: function() {
- return (this.options.fullWidth);
- },
+ // Used to get the value to display in the tooltip for the data at the given index
+ // function getLabelForIndex(index, datasetIndex)
+ getLabelForIndex: helpers.noop,
- // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
- getRightValue: function(rawValue) {
- // Null and undefined values first
- if (rawValue === null || typeof(rawValue) === 'undefined') {
- return NaN;
- }
- // isNaN(object) returns true, so make sure NaN is checking for a number
- if (typeof(rawValue) === 'number' && isNaN(rawValue)) {
- return NaN;
- }
- // If it is in fact an object, dive in one more level
- if (typeof(rawValue) === "object") {
- if ((rawValue instanceof Date) || (rawValue.isValid)) {
- return rawValue;
- } else {
- return this.getRightValue(this.isHorizontal() ? rawValue.x : rawValue.y);
- }
- }
+ // Used to get data value locations. Value can either be an index or a numerical value
+ getPixelForValue: helpers.noop,
- // Value is good, return it
- return rawValue;
- },
+ // Used to get the data value from a given pixel. This is the inverse of getPixelForValue
+ getValueForPixel: helpers.noop,
- // Used to get the value to display in the tooltip for the data at the given index
- // function getLabelForIndex(index, datasetIndex)
- getLabelForIndex: helpers.noop,
+ // Used for tick location, should
+ getPixelForTick: function(index, includeOffset) {
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var tickWidth = innerWidth / Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var pixel = (tickWidth * index) + me.paddingLeft;
- // Used to get data value locations. Value can either be an index or a numerical value
- getPixelForValue: helpers.noop,
+ if (includeOffset) {
+ pixel += tickWidth / 2;
+ }
- // Used to get the data value from a given pixel. This is the inverse of getPixelForValue
- getValueForPixel: helpers.noop,
+ var finalVal = me.left + Math.round(pixel);
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
+ return me.top + (index * (innerHeight / (me.ticks.length - 1)));
+ },
- // Used for tick location, should
- getPixelForTick: function(index, includeOffset) {
- var me = this;
- if (me.isHorizontal()) {
- var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
- var tickWidth = innerWidth / Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- var pixel = (tickWidth * index) + me.paddingLeft;
+ // Utility for getting the pixel location of a percentage of scale
+ getPixelForDecimal: function(decimal /* , includeOffset*/) {
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var valueOffset = (innerWidth * decimal) + me.paddingLeft;
- if (includeOffset) {
- pixel += tickWidth / 2;
- }
+ var finalVal = me.left + Math.round(valueOffset);
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ return me.top + (decimal * me.height);
+ },
- var finalVal = me.left + Math.round(pixel);
- finalVal += me.isFullWidth() ? me.margins.left : 0;
- return finalVal;
- } else {
- var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
- return me.top + (index * (innerHeight / (me.ticks.length - 1)));
- }
- },
+ getBasePixel: function() {
+ return this.getPixelForValue(this.getBaseValue());
+ },
- // Utility for getting the pixel location of a percentage of scale
- getPixelForDecimal: function(decimal /*, includeOffset*/ ) {
- var me = this;
- if (me.isHorizontal()) {
- var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
- var valueOffset = (innerWidth * decimal) + me.paddingLeft;
+ getBaseValue: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
- var finalVal = me.left + Math.round(valueOffset);
- finalVal += me.isFullWidth() ? me.margins.left : 0;
- return finalVal;
- } else {
- return me.top + (decimal * me.height);
- }
- },
+ return me.beginAtZero ? 0:
+ min < 0 && max < 0? max :
+ min > 0 && max > 0? min :
+ 0;
+ },
- getBasePixel: function() {
- var me = this;
- var min = me.min;
- var max = me.max;
+ // Actually draw the scale on the canvas
+ // @param {rectangle} chartArea : the area of the chart to draw full grid lines on
+ draw: function(chartArea) {
+ var me = this;
+ var options = me.options;
+ if (!options.display) {
+ return;
+ }
- return me.getPixelForValue(
- me.beginAtZero? 0:
- min < 0 && max < 0? max :
- min > 0 && max > 0? min :
- 0);
- },
+ var context = me.ctx;
+ var globalDefaults = Chart.defaults.global;
+ var optionTicks = options.ticks;
+ var gridLines = options.gridLines;
+ var scaleLabel = options.scaleLabel;
- // Actualy draw the scale on the canvas
- // @param {rectangle} chartArea : the area of the chart to draw full grid lines on
- draw: function(chartArea) {
- var me = this;
- var options = me.options;
- if (!options.display) {
- return;
- }
+ var isRotated = me.labelRotation !== 0;
+ var skipRatio;
+ var useAutoskipper = optionTicks.autoSkip;
+ var isHorizontal = me.isHorizontal();
- var context = me.ctx;
- var globalDefaults = Chart.defaults.global;
- var optionTicks = options.ticks;
- var gridLines = options.gridLines;
- var scaleLabel = options.scaleLabel;
+ // figure out the maximum number of gridlines to show
+ var maxTicks;
+ if (optionTicks.maxTicksLimit) {
+ maxTicks = optionTicks.maxTicksLimit;
+ }
- var isRotated = me.labelRotation !== 0;
- var skipRatio;
- var useAutoskipper = optionTicks.autoSkip;
- var isHorizontal = me.isHorizontal();
+ var tickFontColor = helpers.getValueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
+ var tickFont = parseFontOptions(optionTicks);
- // figure out the maximum number of gridlines to show
- var maxTicks;
- if (optionTicks.maxTicksLimit) {
- maxTicks = optionTicks.maxTicksLimit;
- }
+ var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
- var tickFontColor = helpers.getValueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
- var tickFontSize = helpers.getValueOrDefault(optionTicks.fontSize, globalDefaults.defaultFontSize);
- var tickFontStyle = helpers.getValueOrDefault(optionTicks.fontStyle, globalDefaults.defaultFontStyle);
- var tickFontFamily = helpers.getValueOrDefault(optionTicks.fontFamily, globalDefaults.defaultFontFamily);
- var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
- var tl = gridLines.tickMarkLength;
+ var scaleLabelFontColor = helpers.getValueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
+ var scaleLabelFont = parseFontOptions(scaleLabel);
- var scaleLabelFontColor = helpers.getValueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
- var scaleLabelFontSize = helpers.getValueOrDefault(scaleLabel.fontSize, globalDefaults.defaultFontSize);
- var scaleLabelFontStyle = helpers.getValueOrDefault(scaleLabel.fontStyle, globalDefaults.defaultFontStyle);
- var scaleLabelFontFamily = helpers.getValueOrDefault(scaleLabel.fontFamily, globalDefaults.defaultFontFamily);
- var scaleLabelFont = helpers.fontString(scaleLabelFontSize, scaleLabelFontStyle, scaleLabelFontFamily);
+ var labelRotationRadians = helpers.toRadians(me.labelRotation);
+ var cosRotation = Math.cos(labelRotationRadians);
+ var longestRotatedLabel = me.longestLabelWidth * cosRotation;
- var labelRotationRadians = helpers.toRadians(me.labelRotation);
- var cosRotation = Math.cos(labelRotationRadians);
- var longestRotatedLabel = me.longestLabelWidth * cosRotation;
+ // Make sure we draw text in the correct color and font
+ context.fillStyle = tickFontColor;
- // Make sure we draw text in the correct color and font
- context.fillStyle = tickFontColor;
+ var itemsToDraw = [];
- var itemsToDraw = [];
+ if (isHorizontal) {
+ skipRatio = false;
- if (isHorizontal) {
- skipRatio = false;
+ if ((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length > (me.width - (me.paddingLeft + me.paddingRight))) {
+ skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length) / (me.width - (me.paddingLeft + me.paddingRight)));
+ }
- // Only calculate the skip ratio with the half width of longestRotateLabel if we got an actual rotation
- // See #2584
- if (isRotated) {
- longestRotatedLabel /= 2;
- }
+ // if they defined a max number of optionTicks,
+ // increase skipRatio until that number is met
+ if (maxTicks && me.ticks.length > maxTicks) {
+ while (!skipRatio || me.ticks.length / (skipRatio || 1) > maxTicks) {
+ if (!skipRatio) {
+ skipRatio = 1;
+ }
+ skipRatio += 1;
+ }
+ }
- if ((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length > (me.width - (me.paddingLeft + me.paddingRight))) {
- skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length) / (me.width - (me.paddingLeft + me.paddingRight)));
- }
+ if (!useAutoskipper) {
+ skipRatio = false;
+ }
+ }
- // if they defined a max number of optionTicks,
- // increase skipRatio until that number is met
- if (maxTicks && me.ticks.length > maxTicks) {
- while (!skipRatio || me.ticks.length / (skipRatio || 1) > maxTicks) {
- if (!skipRatio) {
- skipRatio = 1;
- }
- skipRatio += 1;
- }
- }
- if (!useAutoskipper) {
- skipRatio = false;
- }
- }
+ var xTickStart = options.position === 'right' ? me.left : me.right - tl;
+ var xTickEnd = options.position === 'right' ? me.left + tl : me.right;
+ var yTickStart = options.position === 'bottom' ? me.top : me.bottom - tl;
+ var yTickEnd = options.position === 'bottom' ? me.top + tl : me.bottom;
+ helpers.each(me.ticks, function(label, index) {
+ // If the callback returned a null or undefined value, do not draw this line
+ if (label === undefined || label === null) {
+ return;
+ }
- var xTickStart = options.position === "right" ? me.left : me.right - tl;
- var xTickEnd = options.position === "right" ? me.left + tl : me.right;
- var yTickStart = options.position === "bottom" ? me.top : me.bottom - tl;
- var yTickEnd = options.position === "bottom" ? me.top + tl : me.bottom;
+ var isLastTick = me.ticks.length === index + 1;
- helpers.each(me.ticks, function(label, index) {
- // If the callback returned a null or undefined value, do not draw this line
- if (label === undefined || label === null) {
- return;
- }
+ // Since we always show the last tick,we need may need to hide the last shown one before
+ var shouldSkip = (skipRatio > 1 && index % skipRatio > 0) || (index % skipRatio === 0 && index + skipRatio >= me.ticks.length);
+ if (shouldSkip && !isLastTick || (label === undefined || label === null)) {
+ return;
+ }
- var isLastTick = me.ticks.length === index + 1;
+ var lineWidth, lineColor, borderDash, borderDashOffset;
+ if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0)) {
+ // Draw the first index specially
+ lineWidth = gridLines.zeroLineWidth;
+ lineColor = gridLines.zeroLineColor;
+ borderDash = gridLines.zeroLineBorderDash;
+ borderDashOffset = gridLines.zeroLineBorderDashOffset;
+ } else {
+ lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, index);
+ lineColor = helpers.getValueAtIndexOrDefault(gridLines.color, index);
+ borderDash = helpers.getValueOrDefault(gridLines.borderDash, globalDefaults.borderDash);
+ borderDashOffset = helpers.getValueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset);
+ }
- // Since we always show the last tick,we need may need to hide the last shown one before
- var shouldSkip = (skipRatio > 1 && index % skipRatio > 0) || (index % skipRatio === 0 && index + skipRatio >= me.ticks.length);
- if (shouldSkip && !isLastTick || (label === undefined || label === null)) {
- return;
- }
+ // Common properties
+ var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
+ var textAlign = 'middle';
+ var textBaseline = 'middle';
- var lineWidth, lineColor;
- if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0)) {
- // Draw the first index specially
- lineWidth = gridLines.zeroLineWidth;
- lineColor = gridLines.zeroLineColor;
- } else {
- lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, index);
- lineColor = helpers.getValueAtIndexOrDefault(gridLines.color, index);
- }
+ if (isHorizontal) {
- // Common properties
- var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
- var textAlign, textBaseline = 'middle';
+ if (options.position === 'bottom') {
+ // bottom
+ textBaseline = !isRotated? 'top':'middle';
+ textAlign = !isRotated? 'center': 'right';
+ labelY = me.top + tl;
+ } else {
+ // top
+ textBaseline = !isRotated? 'bottom':'middle';
+ textAlign = !isRotated? 'center': 'left';
+ labelY = me.bottom - tl;
+ }
- if (isHorizontal) {
- if (!isRotated) {
- textBaseline = options.position === 'top' ? 'bottom' : 'top';
- }
+ var xLineValue = me.getPixelForTick(index) + helpers.aliasPixel(lineWidth); // xvalues for grid lines
+ labelX = me.getPixelForTick(index, gridLines.offsetGridLines) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
- textAlign = isRotated ? 'right' : 'center';
+ tx1 = tx2 = x1 = x2 = xLineValue;
+ ty1 = yTickStart;
+ ty2 = yTickEnd;
+ y1 = chartArea.top;
+ y2 = chartArea.bottom;
+ } else {
+ var isLeft = options.position === 'left';
+ var tickPadding = optionTicks.padding;
+ var labelXOffset;
- var xLineValue = me.getPixelForTick(index) + helpers.aliasPixel(lineWidth); // xvalues for grid lines
- labelX = me.getPixelForTick(index, gridLines.offsetGridLines) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
- labelY = (isRotated) ? me.top + 12 : options.position === 'top' ? me.bottom - tl : me.top + tl;
+ if (optionTicks.mirror) {
+ textAlign = isLeft ? 'left' : 'right';
+ labelXOffset = tickPadding;
+ } else {
+ textAlign = isLeft ? 'right' : 'left';
+ labelXOffset = tl + tickPadding;
+ }
- tx1 = tx2 = x1 = x2 = xLineValue;
- ty1 = yTickStart;
- ty2 = yTickEnd;
- y1 = chartArea.top;
- y2 = chartArea.bottom;
- } else {
- if (options.position === 'left') {
- if (optionTicks.mirror) {
- labelX = me.right + optionTicks.padding;
- textAlign = 'left';
- } else {
- labelX = me.right - optionTicks.padding;
- textAlign = 'right';
- }
- } else {
- // right side
- if (optionTicks.mirror) {
- labelX = me.left - optionTicks.padding;
- textAlign = 'right';
- } else {
- labelX = me.left + optionTicks.padding;
- textAlign = 'left';
- }
- }
+ labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset;
- var yLineValue = me.getPixelForTick(index); // xvalues for grid lines
- yLineValue += helpers.aliasPixel(lineWidth);
- labelY = me.getPixelForTick(index, gridLines.offsetGridLines);
+ var yLineValue = me.getPixelForTick(index); // xvalues for grid lines
+ yLineValue += helpers.aliasPixel(lineWidth);
+ labelY = me.getPixelForTick(index, gridLines.offsetGridLines);
- tx1 = xTickStart;
- tx2 = xTickEnd;
- x1 = chartArea.left;
- x2 = chartArea.right;
- ty1 = ty2 = y1 = y2 = yLineValue;
- }
+ tx1 = xTickStart;
+ tx2 = xTickEnd;
+ x1 = chartArea.left;
+ x2 = chartArea.right;
+ ty1 = ty2 = y1 = y2 = yLineValue;
+ }
- itemsToDraw.push({
- tx1: tx1,
- ty1: ty1,
- tx2: tx2,
- ty2: ty2,
- x1: x1,
- y1: y1,
- x2: x2,
- y2: y2,
- labelX: labelX,
- labelY: labelY,
- glWidth: lineWidth,
- glColor: lineColor,
- rotation: -1 * labelRotationRadians,
- label: label,
- textBaseline: textBaseline,
- textAlign: textAlign
- });
- });
+ itemsToDraw.push({
+ tx1: tx1,
+ ty1: ty1,
+ tx2: tx2,
+ ty2: ty2,
+ x1: x1,
+ y1: y1,
+ x2: x2,
+ y2: y2,
+ labelX: labelX,
+ labelY: labelY,
+ glWidth: lineWidth,
+ glColor: lineColor,
+ glBorderDash: borderDash,
+ glBorderDashOffset: borderDashOffset,
+ rotation: -1 * labelRotationRadians,
+ label: label,
+ textBaseline: textBaseline,
+ textAlign: textAlign
+ });
+ });
- // Draw all of the tick labels, tick marks, and grid lines at the correct places
- helpers.each(itemsToDraw, function(itemToDraw) {
- if (gridLines.display) {
- context.lineWidth = itemToDraw.glWidth;
- context.strokeStyle = itemToDraw.glColor;
+ // Draw all of the tick labels, tick marks, and grid lines at the correct places
+ helpers.each(itemsToDraw, function(itemToDraw) {
+ if (gridLines.display) {
+ context.save();
+ context.lineWidth = itemToDraw.glWidth;
+ context.strokeStyle = itemToDraw.glColor;
+ if (context.setLineDash) {
+ context.setLineDash(itemToDraw.glBorderDash);
+ context.lineDashOffset = itemToDraw.glBorderDashOffset;
+ }
- context.beginPath();
+ context.beginPath();
- if (gridLines.drawTicks) {
- context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
- context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
- }
+ if (gridLines.drawTicks) {
+ context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
+ context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
+ }
- if (gridLines.drawOnChartArea) {
- context.moveTo(itemToDraw.x1, itemToDraw.y1);
- context.lineTo(itemToDraw.x2, itemToDraw.y2);
- }
+ if (gridLines.drawOnChartArea) {
+ context.moveTo(itemToDraw.x1, itemToDraw.y1);
+ context.lineTo(itemToDraw.x2, itemToDraw.y2);
+ }
- context.stroke();
- }
+ context.stroke();
+ context.restore();
+ }
- if (optionTicks.display) {
- context.save();
- context.translate(itemToDraw.labelX, itemToDraw.labelY);
- context.rotate(itemToDraw.rotation);
- context.font = tickLabelFont;
- context.textBaseline = itemToDraw.textBaseline;
- context.textAlign = itemToDraw.textAlign;
+ if (optionTicks.display) {
+ context.save();
+ context.translate(itemToDraw.labelX, itemToDraw.labelY);
+ context.rotate(itemToDraw.rotation);
+ context.font = tickFont.font;
+ context.textBaseline = itemToDraw.textBaseline;
+ context.textAlign = itemToDraw.textAlign;
- var label = itemToDraw.label;
- if (helpers.isArray(label)) {
- for (var i = 0, y = 0; i < label.length; ++i) {
- // We just make sure the multiline element is a string here..
- context.fillText('' + label[i], 0, y);
- // apply same lineSpacing as calculated @ L#320
- y += (tickFontSize * 1.5);
- }
- } else {
- context.fillText(label, 0, 0);
- }
- context.restore();
- }
- });
+ var label = itemToDraw.label;
+ if (helpers.isArray(label)) {
+ for (var i = 0, y = 0; i < label.length; ++i) {
+ // We just make sure the multiline element is a string here..
+ context.fillText('' + label[i], 0, y);
+ // apply same lineSpacing as calculated @ L#320
+ y += (tickFont.size * 1.5);
+ }
+ } else {
+ context.fillText(label, 0, 0);
+ }
+ context.restore();
+ }
+ });
- if (scaleLabel.display) {
- // Draw the scale label
- var scaleLabelX;
- var scaleLabelY;
- var rotation = 0;
+ if (scaleLabel.display) {
+ // Draw the scale label
+ var scaleLabelX;
+ var scaleLabelY;
+ var rotation = 0;
- if (isHorizontal) {
- scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
- scaleLabelY = options.position === 'bottom' ? me.bottom - (scaleLabelFontSize / 2) : me.top + (scaleLabelFontSize / 2);
- } else {
- var isLeft = options.position === 'left';
- scaleLabelX = isLeft ? me.left + (scaleLabelFontSize / 2) : me.right - (scaleLabelFontSize / 2);
- scaleLabelY = me.top + ((me.bottom - me.top) / 2);
- rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
- }
+ if (isHorizontal) {
+ scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
+ scaleLabelY = options.position === 'bottom' ? me.bottom - (scaleLabelFont.size / 2) : me.top + (scaleLabelFont.size / 2);
+ } else {
+ var isLeft = options.position === 'left';
+ scaleLabelX = isLeft ? me.left + (scaleLabelFont.size / 2) : me.right - (scaleLabelFont.size / 2);
+ scaleLabelY = me.top + ((me.bottom - me.top) / 2);
+ rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
+ }
- context.save();
- context.translate(scaleLabelX, scaleLabelY);
- context.rotate(rotation);
- context.textAlign = 'center';
- context.textBaseline = 'middle';
- context.fillStyle = scaleLabelFontColor; // render in correct colour
- context.font = scaleLabelFont;
- context.fillText(scaleLabel.labelString, 0, 0);
- context.restore();
- }
+ context.save();
+ context.translate(scaleLabelX, scaleLabelY);
+ context.rotate(rotation);
+ context.textAlign = 'center';
+ context.textBaseline = 'middle';
+ context.fillStyle = scaleLabelFontColor; // render in correct colour
+ context.font = scaleLabelFont.font;
+ context.fillText(scaleLabel.labelString, 0, 0);
+ context.restore();
+ }
- if (gridLines.drawBorder) {
- // Draw the line at the edge of the axis
- context.lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, 0);
- context.strokeStyle = helpers.getValueAtIndexOrDefault(gridLines.color, 0);
- var x1 = me.left,
- x2 = me.right,
- y1 = me.top,
- y2 = me.bottom;
+ if (gridLines.drawBorder) {
+ // Draw the line at the edge of the axis
+ context.lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, 0);
+ context.strokeStyle = helpers.getValueAtIndexOrDefault(gridLines.color, 0);
+ var x1 = me.left,
+ x2 = me.right,
+ y1 = me.top,
+ y2 = me.bottom;
- var aliasPixel = helpers.aliasPixel(context.lineWidth);
- if (isHorizontal) {
- y1 = y2 = options.position === 'top' ? me.bottom : me.top;
- y1 += aliasPixel;
- y2 += aliasPixel;
- } else {
- x1 = x2 = options.position === 'left' ? me.right : me.left;
- x1 += aliasPixel;
- x2 += aliasPixel;
- }
+ var aliasPixel = helpers.aliasPixel(context.lineWidth);
+ if (isHorizontal) {
+ y1 = y2 = options.position === 'top' ? me.bottom : me.top;
+ y1 += aliasPixel;
+ y2 += aliasPixel;
+ } else {
+ x1 = x2 = options.position === 'left' ? me.right : me.left;
+ x1 += aliasPixel;
+ x2 += aliasPixel;
+ }
- context.beginPath();
- context.moveTo(x1, y1);
- context.lineTo(x2, y2);
- context.stroke();
- }
- }
- });
-};
+ context.beginPath();
+ context.moveTo(x1, y1);
+ context.lineTo(x2, y2);
+ context.stroke();
+ }
+ }
+ });
+ };
},{}],32:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.scaleService = {
- // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
- // use the new chart options to grab the correct scale
- constructors: {},
- // Use a registration function so that we can move to an ES6 map when we no longer need to support
- // old browsers
+ Chart.scaleService = {
+ // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
+ // use the new chart options to grab the correct scale
+ constructors: {},
+ // Use a registration function so that we can move to an ES6 map when we no longer need to support
+ // old browsers
- // Scale config defaults
- defaults: {},
- registerScaleType: function(type, scaleConstructor, defaults) {
- this.constructors[type] = scaleConstructor;
- this.defaults[type] = helpers.clone(defaults);
- },
- getScaleConstructor: function(type) {
- return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
- },
- getScaleDefaults: function(type) {
- // Return the scale defaults merged with the global settings so that we always use the latest ones
- return this.defaults.hasOwnProperty(type) ? helpers.scaleMerge(Chart.defaults.scale, this.defaults[type]) : {};
- },
- updateScaleDefaults: function(type, additions) {
- var defaults = this.defaults;
- if (defaults.hasOwnProperty(type)) {
- defaults[type] = helpers.extend(defaults[type], additions);
- }
- },
- addScalesToLayout: function(chartInstance) {
- // Adds each scale to the chart.boxes array to be sized accordingly
- helpers.each(chartInstance.scales, function(scale) {
- Chart.layoutService.addBox(chartInstance, scale);
- });
- }
- };
-};
+ // Scale config defaults
+ defaults: {},
+ registerScaleType: function(type, scaleConstructor, defaults) {
+ this.constructors[type] = scaleConstructor;
+ this.defaults[type] = helpers.clone(defaults);
+ },
+ getScaleConstructor: function(type) {
+ return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
+ },
+ getScaleDefaults: function(type) {
+ // Return the scale defaults merged with the global settings so that we always use the latest ones
+ return this.defaults.hasOwnProperty(type) ? helpers.scaleMerge(Chart.defaults.scale, this.defaults[type]) : {};
+ },
+ updateScaleDefaults: function(type, additions) {
+ var defaults = this.defaults;
+ if (defaults.hasOwnProperty(type)) {
+ defaults[type] = helpers.extend(defaults[type], additions);
+ }
+ },
+ addScalesToLayout: function(chart) {
+ // Adds each scale to the chart.boxes array to be sized accordingly
+ helpers.each(chart.scales, function(scale) {
+ // Set ILayoutItem parameters for backwards compatibility
+ scale.fullWidth = scale.options.fullWidth;
+ scale.position = scale.options.position;
+ scale.weight = scale.options.weight;
+ Chart.layoutService.addBox(chart, scale);
+ });
+ }
+ };
+ };
+
},{}],33:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.global.title = {
- display: false,
- position: 'top',
- fullWidth: true, // marks that this box should take the full width of the canvas (pushing down other boxes)
+ /**
+ * Namespace to hold static tick generation functions
+ * @namespace Chart.Ticks
+ */
+ Chart.Ticks = {
+ /**
+ * Namespace to hold generators for different types of ticks
+ * @namespace Chart.Ticks.generators
+ */
+ generators: {
+ /**
+ * Interface for the options provided to the numeric tick generator
+ * @interface INumericTickGenerationOptions
+ */
+ /**
+ * The maximum number of ticks to display
+ * @name INumericTickGenerationOptions#maxTicks
+ * @type Number
+ */
+ /**
+ * The distance between each tick.
+ * @name INumericTickGenerationOptions#stepSize
+ * @type Number
+ * @optional
+ */
+ /**
+ * Forced minimum for the ticks. If not specified, the minimum of the data range is used to calculate the tick minimum
+ * @name INumericTickGenerationOptions#min
+ * @type Number
+ * @optional
+ */
+ /**
+ * The maximum value of the ticks. If not specified, the maximum of the data range is used to calculate the tick maximum
+ * @name INumericTickGenerationOptions#max
+ * @type Number
+ * @optional
+ */
- fontStyle: 'bold',
- padding: 10,
+ /**
+ * Generate a set of linear ticks
+ * @method Chart.Ticks.generators.linear
+ * @param generationOptions {INumericTickGenerationOptions} the options used to generate the ticks
+ * @param dataRange {IRange} the range of the data
+ * @returns {Array<Number>} array of tick values
+ */
+ linear: function(generationOptions, dataRange) {
+ var ticks = [];
+ // To get a "nice" value for the tick spacing, we will use the appropriately named
+ // "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
+ // for details.
- // actual title
- text: ''
- };
+ var spacing;
+ if (generationOptions.stepSize && generationOptions.stepSize > 0) {
+ spacing = generationOptions.stepSize;
+ } else {
+ var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false);
+ spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true);
+ }
+ var niceMin = Math.floor(dataRange.min / spacing) * spacing;
+ var niceMax = Math.ceil(dataRange.max / spacing) * spacing;
- var noop = helpers.noop;
- Chart.Title = Chart.Element.extend({
+ // If min, max and stepSize is set and they make an evenly spaced scale use it.
+ if (generationOptions.min && generationOptions.max && generationOptions.stepSize) {
+ // If very close to our whole number, use it.
+ if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) {
+ niceMin = generationOptions.min;
+ niceMax = generationOptions.max;
+ }
+ }
- initialize: function(config) {
- var me = this;
- helpers.extend(me, config);
- me.options = helpers.configMerge(Chart.defaults.global.title, config.options);
+ var numSpaces = (niceMax - niceMin) / spacing;
+ // If very close to our rounded value, use it.
+ if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
+ numSpaces = Math.round(numSpaces);
+ } else {
+ numSpaces = Math.ceil(numSpaces);
+ }
- // Contains hit boxes for each dataset (in dataset order)
- me.legendHitBoxes = [];
- },
+ // Put the values into the ticks array
+ ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin);
+ for (var j = 1; j < numSpaces; ++j) {
+ ticks.push(niceMin + (j * spacing));
+ }
+ ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax);
- // These methods are ordered by lifecyle. Utilities then follow.
+ return ticks;
+ },
- beforeUpdate: function () {
- var chartOpts = this.chart.options;
- if (chartOpts && chartOpts.title) {
- this.options = helpers.configMerge(Chart.defaults.global.title, chartOpts.title);
- }
- },
- update: function(maxWidth, maxHeight, margins) {
- var me = this;
+ /**
+ * Generate a set of logarithmic ticks
+ * @method Chart.Ticks.generators.logarithmic
+ * @param generationOptions {INumericTickGenerationOptions} the options used to generate the ticks
+ * @param dataRange {IRange} the range of the data
+ * @returns {Array<Number>} array of tick values
+ */
+ logarithmic: function(generationOptions, dataRange) {
+ var ticks = [];
+ var getValueOrDefault = helpers.getValueOrDefault;
- // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
- me.beforeUpdate();
+ // Figure out what the max number of ticks we can support it is based on the size of
+ // the axis area. For now, we say that the minimum tick spacing in pixels must be 50
+ // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
+ // the graph
+ var tickVal = getValueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min))));
- // Absorb the master measurements
- me.maxWidth = maxWidth;
- me.maxHeight = maxHeight;
- me.margins = margins;
+ var endExp = Math.floor(helpers.log10(dataRange.max));
+ var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
+ var exp;
+ var significand;
- // Dimensions
- me.beforeSetDimensions();
- me.setDimensions();
- me.afterSetDimensions();
- // Labels
- me.beforeBuildLabels();
- me.buildLabels();
- me.afterBuildLabels();
+ if (tickVal === 0) {
+ exp = Math.floor(helpers.log10(dataRange.minNotZero));
+ significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
- // Fit
- me.beforeFit();
- me.fit();
- me.afterFit();
- //
- me.afterUpdate();
+ ticks.push(tickVal);
+ tickVal = significand * Math.pow(10, exp);
+ } else {
+ exp = Math.floor(helpers.log10(tickVal));
+ significand = Math.floor(tickVal / Math.pow(10, exp));
+ }
- return me.minSize;
+ do {
+ ticks.push(tickVal);
- },
- afterUpdate: noop,
+ ++significand;
+ if (significand === 10) {
+ significand = 1;
+ ++exp;
+ }
- //
+ tickVal = significand * Math.pow(10, exp);
+ } while (exp < endExp || (exp === endExp && significand < endSignificand));
- beforeSetDimensions: noop,
- setDimensions: function() {
- var me = this;
- // Set the unconstrained dimension before label rotation
- if (me.isHorizontal()) {
- // Reset position before calculating rotation
- me.width = me.maxWidth;
- me.left = 0;
- me.right = me.width;
- } else {
- me.height = me.maxHeight;
+ var lastTick = getValueOrDefault(generationOptions.max, tickVal);
+ ticks.push(lastTick);
- // Reset position before calculating rotation
- me.top = 0;
- me.bottom = me.height;
- }
+ return ticks;
+ }
+ },
- // Reset padding
- me.paddingLeft = 0;
- me.paddingTop = 0;
- me.paddingRight = 0;
- me.paddingBottom = 0;
+ /**
+ * Namespace to hold formatters for different types of ticks
+ * @namespace Chart.Ticks.formatters
+ */
+ formatters: {
+ /**
+ * Formatter for value labels
+ * @method Chart.Ticks.formatters.values
+ * @param value the value to display
+ * @return {String|Array} the label to display
+ */
+ values: function(value) {
+ return helpers.isArray(value) ? value : '' + value;
+ },
- // Reset minSize
- me.minSize = {
- width: 0,
- height: 0
- };
- },
- afterSetDimensions: noop,
+ /**
+ * Formatter for linear numeric ticks
+ * @method Chart.Ticks.formatters.linear
+ * @param tickValue {Number} the value to be formatted
+ * @param index {Number} the position of the tickValue parameter in the ticks array
+ * @param ticks {Array<Number>} the list of ticks being converted
+ * @return {String} string representation of the tickValue parameter
+ */
+ linear: function(tickValue, index, ticks) {
+ // If we have lots of ticks, don't use the ones
+ var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
- //
+ // If we have a number like 2.5 as the delta, figure out how many decimal places we need
+ if (Math.abs(delta) > 1) {
+ if (tickValue !== Math.floor(tickValue)) {
+ // not an integer
+ delta = tickValue - Math.floor(tickValue);
+ }
+ }
- beforeBuildLabels: noop,
- buildLabels: noop,
- afterBuildLabels: noop,
+ var logDelta = helpers.log10(Math.abs(delta));
+ var tickString = '';
- //
+ if (tickValue !== 0) {
+ var numDecimal = -1 * Math.floor(logDelta);
+ numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
+ tickString = tickValue.toFixed(numDecimal);
+ } else {
+ tickString = '0'; // never show decimal places for 0
+ }
- beforeFit: noop,
- fit: function() {
- var me = this,
- valueOrDefault = helpers.getValueOrDefault,
- opts = me.options,
- globalDefaults = Chart.defaults.global,
- display = opts.display,
- fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
- minSize = me.minSize;
+ return tickString;
+ },
- if (me.isHorizontal()) {
- minSize.width = me.maxWidth; // fill all the width
- minSize.height = display ? fontSize + (opts.padding * 2) : 0;
- } else {
- minSize.width = display ? fontSize + (opts.padding * 2) : 0;
- minSize.height = me.maxHeight; // fill all the height
- }
+ logarithmic: function(tickValue, index, ticks) {
+ var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue))));
- me.width = minSize.width;
- me.height = minSize.height;
-
- },
- afterFit: noop,
-
- // Shared Methods
- isHorizontal: function() {
- var pos = this.options.position;
- return pos === "top" || pos === "bottom";
- },
-
- // Actualy draw the title block on the canvas
- draw: function() {
- var me = this,
- ctx = me.ctx,
- valueOrDefault = helpers.getValueOrDefault,
- opts = me.options,
- globalDefaults = Chart.defaults.global;
-
- if (opts.display) {
- var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
- fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle),
- fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily),
- titleFont = helpers.fontString(fontSize, fontStyle, fontFamily),
- rotation = 0,
- titleX,
- titleY,
- top = me.top,
- left = me.left,
- bottom = me.bottom,
- right = me.right;
-
- ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
- ctx.font = titleFont;
-
- // Horizontal
- if (me.isHorizontal()) {
- titleX = left + ((right - left) / 2); // midpoint of the width
- titleY = top + ((bottom - top) / 2); // midpoint of the height
- } else {
- titleX = opts.position === 'left' ? left + (fontSize / 2) : right - (fontSize / 2);
- titleY = top + ((bottom - top) / 2);
- rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
- }
-
- ctx.save();
- ctx.translate(titleX, titleY);
- ctx.rotate(rotation);
- ctx.textAlign = 'center';
- ctx.textBaseline = 'middle';
- ctx.fillText(opts.text, 0, 0);
- ctx.restore();
- }
- }
- });
-
- // Register the title plugin
- Chart.plugins.register({
- beforeInit: function(chartInstance) {
- var opts = chartInstance.options;
- var titleOpts = opts.title;
-
- if (titleOpts) {
- chartInstance.titleBlock = new Chart.Title({
- ctx: chartInstance.chart.ctx,
- options: titleOpts,
- chart: chartInstance
- });
-
- Chart.layoutService.addBox(chartInstance, chartInstance.titleBlock);
- }
- }
- });
-};
+ if (tickValue === 0) {
+ return '0';
+ } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
+ return tickValue.toExponential();
+ }
+ return '';
+ }
+ }
+ };
+ };
},{}],34:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
- Chart.defaults.global.tooltips = {
- enabled: true,
- custom: null,
- mode: 'single',
- backgroundColor: "rgba(0,0,0,0.8)",
- titleFontStyle: "bold",
- titleSpacing: 2,
- titleMarginBottom: 6,
- titleFontColor: "#fff",
- titleAlign: "left",
- bodySpacing: 2,
- bodyFontColor: "#fff",
- bodyAlign: "left",
- footerFontStyle: "bold",
- footerSpacing: 2,
- footerMarginTop: 6,
- footerFontColor: "#fff",
- footerAlign: "left",
- yPadding: 6,
- xPadding: 6,
- yAlign : 'center',
- xAlign : 'center',
- caretSize: 5,
- cornerRadius: 6,
- multiKeyBackground: '#fff',
- callbacks: {
- // Args are: (tooltipItems, data)
- beforeTitle: helpers.noop,
- title: function(tooltipItems, data) {
- // Pick first xLabel for now
- var title = '';
- var labels = data.labels;
- var labelCount = labels ? labels.length : 0;
+ /**
+ * Helper method to merge the opacity into a color
+ */
+ function mergeOpacity(colorString, opacity) {
+ var color = helpers.color(colorString);
+ return color.alpha(opacity * color.alpha()).rgbaString();
+ }
- if (tooltipItems.length > 0) {
- var item = tooltipItems[0];
+ Chart.defaults.global.tooltips = {
+ enabled: true,
+ custom: null,
+ mode: 'nearest',
+ position: 'average',
+ intersect: true,
+ backgroundColor: 'rgba(0,0,0,0.8)',
+ titleFontStyle: 'bold',
+ titleSpacing: 2,
+ titleMarginBottom: 6,
+ titleFontColor: '#fff',
+ titleAlign: 'left',
+ bodySpacing: 2,
+ bodyFontColor: '#fff',
+ bodyAlign: 'left',
+ footerFontStyle: 'bold',
+ footerSpacing: 2,
+ footerMarginTop: 6,
+ footerFontColor: '#fff',
+ footerAlign: 'left',
+ yPadding: 6,
+ xPadding: 6,
+ caretPadding: 2,
+ caretSize: 5,
+ cornerRadius: 6,
+ multiKeyBackground: '#fff',
+ displayColors: true,
+ borderColor: 'rgba(0,0,0,0)',
+ borderWidth: 0,
+ callbacks: {
+ // Args are: (tooltipItems, data)
+ beforeTitle: helpers.noop,
+ title: function(tooltipItems, data) {
+ // Pick first xLabel for now
+ var title = '';
+ var labels = data.labels;
+ var labelCount = labels ? labels.length : 0;
- if (item.xLabel) {
- title = item.xLabel;
- } else if (labelCount > 0 && item.index < labelCount) {
- title = labels[item.index];
- }
- }
+ if (tooltipItems.length > 0) {
+ var item = tooltipItems[0];
- return title;
- },
- afterTitle: helpers.noop,
+ if (item.xLabel) {
+ title = item.xLabel;
+ } else if (labelCount > 0 && item.index < labelCount) {
+ title = labels[item.index];
+ }
+ }
- // Args are: (tooltipItems, data)
- beforeBody: helpers.noop,
+ return title;
+ },
+ afterTitle: helpers.noop,
- // Args are: (tooltipItem, data)
- beforeLabel: helpers.noop,
- label: function(tooltipItem, data) {
- var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
- return datasetLabel + ': ' + tooltipItem.yLabel;
- },
- labelColor: function(tooltipItem, chartInstance) {
- var meta = chartInstance.getDatasetMeta(tooltipItem.datasetIndex);
- var activeElement = meta.data[tooltipItem.index];
- var view = activeElement._view;
- return {
- borderColor: view.borderColor,
- backgroundColor: view.backgroundColor
- };
- },
- afterLabel: helpers.noop,
+ // Args are: (tooltipItems, data)
+ beforeBody: helpers.noop,
- // Args are: (tooltipItems, data)
- afterBody: helpers.noop,
+ // Args are: (tooltipItem, data)
+ beforeLabel: helpers.noop,
+ label: function(tooltipItem, data) {
+ var label = data.datasets[tooltipItem.datasetIndex].label || '';
- // Args are: (tooltipItems, data)
- beforeFooter: helpers.noop,
- footer: helpers.noop,
- afterFooter: helpers.noop
- }
- };
+ if (label) {
+ label += ': ';
+ }
+ label += tooltipItem.yLabel;
+ return label;
+ },
+ labelColor: function(tooltipItem, chart) {
+ var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
+ var activeElement = meta.data[tooltipItem.index];
+ var view = activeElement._view;
+ return {
+ borderColor: view.borderColor,
+ backgroundColor: view.backgroundColor
+ };
+ },
+ afterLabel: helpers.noop,
- // Helper to push or concat based on if the 2nd parameter is an array or not
- function pushOrConcat(base, toPush) {
- if (toPush) {
- if (helpers.isArray(toPush)) {
- //base = base.concat(toPush);
- Array.prototype.push.apply(base, toPush);
- } else {
- base.push(toPush);
- }
- }
+ // Args are: (tooltipItems, data)
+ afterBody: helpers.noop,
- return base;
- }
+ // Args are: (tooltipItems, data)
+ beforeFooter: helpers.noop,
+ footer: helpers.noop,
+ afterFooter: helpers.noop
+ }
+ };
- function getAveragePosition(elements) {
- if (!elements.length) {
- return false;
- }
+ // Helper to push or concat based on if the 2nd parameter is an array or not
+ function pushOrConcat(base, toPush) {
+ if (toPush) {
+ if (helpers.isArray(toPush)) {
+ // base = base.concat(toPush);
+ Array.prototype.push.apply(base, toPush);
+ } else {
+ base.push(toPush);
+ }
+ }
- var i, len;
- var xPositions = [];
- var yPositions = [];
+ return base;
+ }
- for (i = 0, len = elements.length; i < len; ++i) {
- var el = elements[i];
- if (el && el.hasValue()){
- var pos = el.tooltipPosition();
- xPositions.push(pos.x);
- yPositions.push(pos.y);
- }
- }
+ // Private helper to create a tooltip item model
+ // @param element : the chart element (point, arc, bar) to create the tooltip item for
+ // @return : new tooltip item
+ function createTooltipItem(element) {
+ var xScale = element._xScale;
+ var yScale = element._yScale || element._scale; // handle radar || polarArea charts
+ var index = element._index,
+ datasetIndex = element._datasetIndex;
- var x = 0,
- y = 0;
- for (i = 0; i < xPositions.length; ++i) {
- if (xPositions[ i ]) {
- x += xPositions[i];
- y += yPositions[i];
- }
- }
+ return {
+ xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
+ yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
+ index: index,
+ datasetIndex: datasetIndex,
+ x: element._model.x,
+ y: element._model.y
+ };
+ }
- return {
- x: Math.round(x / xPositions.length),
- y: Math.round(y / xPositions.length)
- };
- }
+ /**
+ * Helper to get the reset model for the tooltip
+ * @param tooltipOpts {Object} the tooltip options
+ */
+ function getBaseModel(tooltipOpts) {
+ var globalDefaults = Chart.defaults.global;
+ var getValueOrDefault = helpers.getValueOrDefault;
- // Private helper to create a tooltip iteam model
- // @param element : the chart element (point, arc, bar) to create the tooltip item for
- // @return : new tooltip item
- function createTooltipItem(element) {
- var xScale = element._xScale;
- var yScale = element._yScale || element._scale; // handle radar || polarArea charts
- var index = element._index,
- datasetIndex = element._datasetIndex;
+ return {
+ // Positioning
+ xPadding: tooltipOpts.xPadding,
+ yPadding: tooltipOpts.yPadding,
+ xAlign: tooltipOpts.xAlign,
+ yAlign: tooltipOpts.yAlign,
- return {
- xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
- yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
- index: index,
- datasetIndex: datasetIndex
- };
- }
+ // Body
+ bodyFontColor: tooltipOpts.bodyFontColor,
+ _bodyFontFamily: getValueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
+ _bodyFontStyle: getValueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
+ _bodyAlign: tooltipOpts.bodyAlign,
+ bodyFontSize: getValueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
+ bodySpacing: tooltipOpts.bodySpacing,
- Chart.Tooltip = Chart.Element.extend({
- initialize: function() {
- var me = this;
- var globalDefaults = Chart.defaults.global;
- var tooltipOpts = me._options;
- var getValueOrDefault = helpers.getValueOrDefault;
+ // Title
+ titleFontColor: tooltipOpts.titleFontColor,
+ _titleFontFamily: getValueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
+ _titleFontStyle: getValueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
+ titleFontSize: getValueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
+ _titleAlign: tooltipOpts.titleAlign,
+ titleSpacing: tooltipOpts.titleSpacing,
+ titleMarginBottom: tooltipOpts.titleMarginBottom,
- helpers.extend(me, {
- _model: {
- // Positioning
- xPadding: tooltipOpts.xPadding,
- yPadding: tooltipOpts.yPadding,
- xAlign : tooltipOpts.xAlign,
- yAlign : tooltipOpts.yAlign,
+ // Footer
+ footerFontColor: tooltipOpts.footerFontColor,
+ _footerFontFamily: getValueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
+ _footerFontStyle: getValueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
+ footerFontSize: getValueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
+ _footerAlign: tooltipOpts.footerAlign,
+ footerSpacing: tooltipOpts.footerSpacing,
+ footerMarginTop: tooltipOpts.footerMarginTop,
- // Body
- bodyFontColor: tooltipOpts.bodyFontColor,
- _bodyFontFamily: getValueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
- _bodyFontStyle: getValueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
- _bodyAlign: tooltipOpts.bodyAlign,
- bodyFontSize: getValueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
- bodySpacing: tooltipOpts.bodySpacing,
+ // Appearance
+ caretSize: tooltipOpts.caretSize,
+ cornerRadius: tooltipOpts.cornerRadius,
+ backgroundColor: tooltipOpts.backgroundColor,
+ opacity: 0,
+ legendColorBackground: tooltipOpts.multiKeyBackground,
+ displayColors: tooltipOpts.displayColors,
+ borderColor: tooltipOpts.borderColor,
+ borderWidth: tooltipOpts.borderWidth
+ };
+ }
- // Title
- titleFontColor: tooltipOpts.titleFontColor,
- _titleFontFamily: getValueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
- _titleFontStyle: getValueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
- titleFontSize: getValueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
- _titleAlign: tooltipOpts.titleAlign,
- titleSpacing: tooltipOpts.titleSpacing,
- titleMarginBottom: tooltipOpts.titleMarginBottom,
+ /**
+ * Get the size of the tooltip
+ */
+ function getTooltipSize(tooltip, model) {
+ var ctx = tooltip._chart.ctx;
- // Footer
- footerFontColor: tooltipOpts.footerFontColor,
- _footerFontFamily: getValueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
- _footerFontStyle: getValueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
- footerFontSize: getValueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
- _footerAlign: tooltipOpts.footerAlign,
- footerSpacing: tooltipOpts.footerSpacing,
- footerMarginTop: tooltipOpts.footerMarginTop,
+ var height = model.yPadding * 2; // Tooltip Padding
+ var width = 0;
- // Appearance
- caretSize: tooltipOpts.caretSize,
- cornerRadius: tooltipOpts.cornerRadius,
- backgroundColor: tooltipOpts.backgroundColor,
- opacity: 0,
- legendColorBackground: tooltipOpts.multiKeyBackground
- }
- });
- },
+ // Count of all lines in the body
+ var body = model.body;
+ var combinedBodyLength = body.reduce(function(count, bodyItem) {
+ return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
+ }, 0);
+ combinedBodyLength += model.beforeBody.length + model.afterBody.length;
- // Get the title
- // Args are: (tooltipItem, data)
- getTitle: function() {
- var me = this;
- var opts = me._options;
- var callbacks = opts.callbacks;
+ var titleLineCount = model.title.length;
+ var footerLineCount = model.footer.length;
+ var titleFontSize = model.titleFontSize,
+ bodyFontSize = model.bodyFontSize,
+ footerFontSize = model.footerFontSize;
- var beforeTitle = callbacks.beforeTitle.apply(me, arguments),
- title = callbacks.title.apply(me, arguments),
- afterTitle = callbacks.afterTitle.apply(me, arguments);
+ height += titleLineCount * titleFontSize; // Title Lines
+ height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
+ height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
+ height += combinedBodyLength * bodyFontSize; // Body Lines
+ height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
+ height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
+ height += footerLineCount * (footerFontSize); // Footer Lines
+ height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
- var lines = [];
- lines = pushOrConcat(lines, beforeTitle);
- lines = pushOrConcat(lines, title);
- lines = pushOrConcat(lines, afterTitle);
+ // Title width
+ var widthPadding = 0;
+ var maxLineWidth = function(line) {
+ width = Math.max(width, ctx.measureText(line).width + widthPadding);
+ };
- return lines;
- },
+ ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
+ helpers.each(model.title, maxLineWidth);
- // Args are: (tooltipItem, data)
- getBeforeBody: function() {
- var lines = this._options.callbacks.beforeBody.apply(this, arguments);
- return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
- },
+ // Body width
+ ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
+ helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
- // Args are: (tooltipItem, data)
- getBody: function(tooltipItems, data) {
- var me = this;
- var callbacks = me._options.callbacks;
- var bodyItems = [];
+ // Body lines may include some extra width due to the color box
+ widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
+ helpers.each(body, function(bodyItem) {
+ helpers.each(bodyItem.before, maxLineWidth);
+ helpers.each(bodyItem.lines, maxLineWidth);
+ helpers.each(bodyItem.after, maxLineWidth);
+ });
- helpers.each(tooltipItems, function(tooltipItem) {
- var bodyItem = {
- before: [],
- lines: [],
- after: []
- };
- pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
- pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
- pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
+ // Reset back to 0
+ widthPadding = 0;
- bodyItems.push(bodyItem);
- });
+ // Footer width
+ ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
+ helpers.each(model.footer, maxLineWidth);
- return bodyItems;
- },
+ // Add padding
+ width += 2 * model.xPadding;
- // Args are: (tooltipItem, data)
- getAfterBody: function() {
- var lines = this._options.callbacks.afterBody.apply(this, arguments);
- return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
- },
+ return {
+ width: width,
+ height: height
+ };
+ }
- // Get the footer and beforeFooter and afterFooter lines
- // Args are: (tooltipItem, data)
- getFooter: function() {
- var me = this;
- var callbacks = me._options.callbacks;
+ /**
+ * Helper to get the alignment of a tooltip given the size
+ */
+ function determineAlignment(tooltip, size) {
+ var model = tooltip._model;
+ var chart = tooltip._chart;
+ var chartArea = tooltip._chart.chartArea;
+ var xAlign = 'center';
+ var yAlign = 'center';
- var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
- var footer = callbacks.footer.apply(me, arguments);
- var afterFooter = callbacks.afterFooter.apply(me, arguments);
+ if (model.y < size.height) {
+ yAlign = 'top';
+ } else if (model.y > (chart.height - size.height)) {
+ yAlign = 'bottom';
+ }
- var lines = [];
- lines = pushOrConcat(lines, beforeFooter);
- lines = pushOrConcat(lines, footer);
- lines = pushOrConcat(lines, afterFooter);
+ var lf, rf; // functions to determine left, right alignment
+ var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
+ var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
+ var midX = (chartArea.left + chartArea.right) / 2;
+ var midY = (chartArea.top + chartArea.bottom) / 2;
- return lines;
- },
+ if (yAlign === 'center') {
+ lf = function(x) {
+ return x <= midX;
+ };
+ rf = function(x) {
+ return x > midX;
+ };
+ } else {
+ lf = function(x) {
+ return x <= (size.width / 2);
+ };
+ rf = function(x) {
+ return x >= (chart.width - (size.width / 2));
+ };
+ }
- update: function(changed) {
- var me = this;
- var opts = me._options;
- var model = me._model;
- var active = me._active;
+ olf = function(x) {
+ return x + size.width > chart.width;
+ };
+ orf = function(x) {
+ return x - size.width < 0;
+ };
+ yf = function(y) {
+ return y <= midY ? 'top' : 'bottom';
+ };
- var data = me._data;
- var chartInstance = me._chartInstance;
+ if (lf(model.x)) {
+ xAlign = 'left';
- var i, len;
+ // Is tooltip too wide and goes over the right side of the chart.?
+ if (olf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ } else if (rf(model.x)) {
+ xAlign = 'right';
- if (active.length) {
- model.opacity = 1;
+ // Is tooltip too wide and goes outside left edge of canvas?
+ if (orf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ }
- var labelColors = [],
- tooltipPosition = getAveragePosition(active);
+ var opts = tooltip._options;
+ return {
+ xAlign: opts.xAlign ? opts.xAlign : xAlign,
+ yAlign: opts.yAlign ? opts.yAlign : yAlign
+ };
+ }
- var tooltipItems = [];
- for (i = 0, len = active.length; i < len; ++i) {
- tooltipItems.push(createTooltipItem(active[i]));
- }
+ /**
+ * @Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
+ */
+ function getBackgroundPoint(vm, size, alignment) {
+ // Background Position
+ var x = vm.x;
+ var y = vm.y;
+
+ var caretSize = vm.caretSize,
+ caretPadding = vm.caretPadding,
+ cornerRadius = vm.cornerRadius,
+ xAlign = alignment.xAlign,
+ yAlign = alignment.yAlign,
+ paddingAndSize = caretSize + caretPadding,
+ radiusAndPadding = cornerRadius + caretPadding;
+
+ if (xAlign === 'right') {
+ x -= size.width;
+ } else if (xAlign === 'center') {
+ x -= (size.width / 2);
+ }
+
+ if (yAlign === 'top') {
+ y += paddingAndSize;
+ } else if (yAlign === 'bottom') {
+ y -= size.height + paddingAndSize;
+ } else {
+ y -= (size.height / 2);
+ }
+
+ if (yAlign === 'center') {
+ if (xAlign === 'left') {
+ x += paddingAndSize;
+ } else if (xAlign === 'right') {
+ x -= paddingAndSize;
+ }
+ } else if (xAlign === 'left') {
+ x -= radiusAndPadding;
+ } else if (xAlign === 'right') {
+ x += radiusAndPadding;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+ }
+
+ Chart.Tooltip = Chart.Element.extend({
+ initialize: function() {
+ this._model = getBaseModel(this._options);
+ },
+
+ // Get the title
+ // Args are: (tooltipItem, data)
+ getTitle: function() {
+ var me = this;
+ var opts = me._options;
+ var callbacks = opts.callbacks;
+
+ var beforeTitle = callbacks.beforeTitle.apply(me, arguments),
+ title = callbacks.title.apply(me, arguments),
+ afterTitle = callbacks.afterTitle.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, beforeTitle);
+ lines = pushOrConcat(lines, title);
+ lines = pushOrConcat(lines, afterTitle);
+
+ return lines;
+ },
+
+ // Args are: (tooltipItem, data)
+ getBeforeBody: function() {
+ var lines = this._options.callbacks.beforeBody.apply(this, arguments);
+ return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
+ },
+
+ // Args are: (tooltipItem, data)
+ getBody: function(tooltipItems, data) {
+ var me = this;
+ var callbacks = me._options.callbacks;
+ var bodyItems = [];
+
+ helpers.each(tooltipItems, function(tooltipItem) {
+ var bodyItem = {
+ before: [],
+ lines: [],
+ after: []
+ };
+ pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
+ pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
+ pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
+
+ bodyItems.push(bodyItem);
+ });
+
+ return bodyItems;
+ },
+
+ // Args are: (tooltipItem, data)
+ getAfterBody: function() {
+ var lines = this._options.callbacks.afterBody.apply(this, arguments);
+ return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
+ },
+
+ // Get the footer and beforeFooter and afterFooter lines
+ // Args are: (tooltipItem, data)
+ getFooter: function() {
+ var me = this;
+ var callbacks = me._options.callbacks;
+
+ var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
+ var footer = callbacks.footer.apply(me, arguments);
+ var afterFooter = callbacks.afterFooter.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, beforeFooter);
+ lines = pushOrConcat(lines, footer);
+ lines = pushOrConcat(lines, afterFooter);
+
+ return lines;
+ },
+
+ update: function(changed) {
+ var me = this;
+ var opts = me._options;
+
+ // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
+ // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
+ // which breaks any animations.
+ var existingModel = me._model;
+ var model = me._model = getBaseModel(opts);
+ var active = me._active;
+
+ var data = me._data;
+
+ // In the case where active.length === 0 we need to keep these at existing values for good animations
+ var alignment = {
+ xAlign: existingModel.xAlign,
+ yAlign: existingModel.yAlign
+ };
+ var backgroundPoint = {
+ x: existingModel.x,
+ y: existingModel.y
+ };
+ var tooltipSize = {
+ width: existingModel.width,
+ height: existingModel.height
+ };
+ var tooltipPosition = {
+ x: existingModel.caretX,
+ y: existingModel.caretY
+ };
+
+ var i, len;
+
+ if (active.length) {
+ model.opacity = 1;
+
+ var labelColors = [];
+ tooltipPosition = Chart.Tooltip.positioners[opts.position](active, me._eventPosition);
+
+ var tooltipItems = [];
+ for (i = 0, len = active.length; i < len; ++i) {
+ tooltipItems.push(createTooltipItem(active[i]));
+ }
+
+ // If the user provided a filter function, use it to modify the tooltip items
+ if (opts.filter) {
+ tooltipItems = tooltipItems.filter(function(a) {
+ return opts.filter(a, data);
+ });
+ }
+
+ // If the user provided a sorting function, use it to modify the tooltip items
+ if (opts.itemSort) {
+ tooltipItems = tooltipItems.sort(function(a, b) {
+ return opts.itemSort(a, b, data);
+ });
+ }
+
+ // Determine colors for boxes
+ helpers.each(tooltipItems, function(tooltipItem) {
+ labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
+ });
+
+ // Build the Text Lines
+ model.title = me.getTitle(tooltipItems, data);
+ model.beforeBody = me.getBeforeBody(tooltipItems, data);
+ model.body = me.getBody(tooltipItems, data);
+ model.afterBody = me.getAfterBody(tooltipItems, data);
+ model.footer = me.getFooter(tooltipItems, data);
- // If the user provided a sorting function, use it to modify the tooltip items
- if (opts.itemSort) {
- tooltipItems = tooltipItems.sort(opts.itemSort);
- }
+ // Initial positioning and colors
+ model.x = Math.round(tooltipPosition.x);
+ model.y = Math.round(tooltipPosition.y);
+ model.caretPadding = opts.caretPadding;
+ model.labelColors = labelColors;
- // If there is more than one item, show color items
- if (active.length > 1) {
- helpers.each(tooltipItems, function(tooltipItem) {
- labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, chartInstance));
- });
- }
+ // data points
+ model.dataPoints = tooltipItems;
- // Build the Text Lines
- helpers.extend(model, {
- title: me.getTitle(tooltipItems, data),
- beforeBody: me.getBeforeBody(tooltipItems, data),
- body: me.getBody(tooltipItems, data),
- afterBody: me.getAfterBody(tooltipItems, data),
- footer: me.getFooter(tooltipItems, data),
- x: Math.round(tooltipPosition.x),
- y: Math.round(tooltipPosition.y),
- caretPadding: helpers.getValueOrDefault(tooltipPosition.padding, 2),
- labelColors: labelColors
- });
+ // We need to determine alignment of the tooltip
+ tooltipSize = getTooltipSize(this, model);
+ alignment = determineAlignment(this, tooltipSize);
+ // Final Size and Position
+ backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment);
+ } else {
+ model.opacity = 0;
+ }
- // We need to determine alignment of
- var tooltipSize = me.getTooltipSize(model);
- me.determineAlignment(tooltipSize); // Smart Tooltip placement to stay on the canvas
+ model.xAlign = alignment.xAlign;
+ model.yAlign = alignment.yAlign;
+ model.x = backgroundPoint.x;
+ model.y = backgroundPoint.y;
+ model.width = tooltipSize.width;
+ model.height = tooltipSize.height;
- helpers.extend(model, me.getBackgroundPoint(model, tooltipSize));
- } else {
- me._model.opacity = 0;
- }
+ // Point where the caret on the tooltip points to
+ model.caretX = tooltipPosition.x;
+ model.caretY = tooltipPosition.y;
- if (changed && opts.custom) {
- opts.custom.call(me, model);
- }
+ me._model = model;
- return me;
- },
- getTooltipSize: function(vm) {
- var ctx = this._chart.ctx;
+ if (changed && opts.custom) {
+ opts.custom.call(me, model);
+ }
- var size = {
- height: vm.yPadding * 2, // Tooltip Padding
- width: 0
- };
+ return me;
+ },
+ drawCaret: function(tooltipPoint, size) {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
- // Count of all lines in the body
- var body = vm.body;
- var combinedBodyLength = body.reduce(function(count, bodyItem) {
- return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
- }, 0);
- combinedBodyLength += vm.beforeBody.length + vm.afterBody.length;
+ ctx.lineTo(caretPosition.x1, caretPosition.y1);
+ ctx.lineTo(caretPosition.x2, caretPosition.y2);
+ ctx.lineTo(caretPosition.x3, caretPosition.y3);
+ },
+ getCaretPosition: function(tooltipPoint, size, vm) {
+ var x1, x2, x3;
+ var y1, y2, y3;
+ var caretSize = vm.caretSize;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = vm.xAlign,
+ yAlign = vm.yAlign;
+ var ptX = tooltipPoint.x,
+ ptY = tooltipPoint.y;
+ var width = size.width,
+ height = size.height;
- var titleLineCount = vm.title.length;
- var footerLineCount = vm.footer.length;
- var titleFontSize = vm.titleFontSize,
- bodyFontSize = vm.bodyFontSize,
- footerFontSize = vm.footerFontSize;
+ if (yAlign === 'center') {
+ y2 = ptY + (height / 2);
- size.height += titleLineCount * titleFontSize; // Title Lines
- size.height += (titleLineCount - 1) * vm.titleSpacing; // Title Line Spacing
- size.height += titleLineCount ? vm.titleMarginBottom : 0; // Title's bottom Margin
- size.height += combinedBodyLength * bodyFontSize; // Body Lines
- size.height += combinedBodyLength ? (combinedBodyLength - 1) * vm.bodySpacing : 0; // Body Line Spacing
- size.height += footerLineCount ? vm.footerMarginTop : 0; // Footer Margin
- size.height += footerLineCount * (footerFontSize); // Footer Lines
- size.height += footerLineCount ? (footerLineCount - 1) * vm.footerSpacing : 0; // Footer Line Spacing
+ if (xAlign === 'left') {
+ x1 = ptX;
+ x2 = x1 - caretSize;
+ x3 = x1;
- // Title width
- var widthPadding = 0;
- var maxLineWidth = function(line) {
- size.width = Math.max(size.width, ctx.measureText(line).width + widthPadding);
- };
+ y1 = y2 + caretSize;
+ y3 = y2 - caretSize;
+ } else {
+ x1 = ptX + width;
+ x2 = x1 + caretSize;
+ x3 = x1;
- ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
- helpers.each(vm.title, maxLineWidth);
+ y1 = y2 - caretSize;
+ y3 = y2 + caretSize;
+ }
+ } else {
+ if (xAlign === 'left') {
+ x2 = ptX + cornerRadius + (caretSize);
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else if (xAlign === 'right') {
+ x2 = ptX + width - cornerRadius - caretSize;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else {
+ x2 = ptX + (width / 2);
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ }
+ if (yAlign === 'top') {
+ y1 = ptY;
+ y2 = y1 - caretSize;
+ y3 = y1;
+ } else {
+ y1 = ptY + height;
+ y2 = y1 + caretSize;
+ y3 = y1;
+ // invert drawing order
+ var tmp = x3;
+ x3 = x1;
+ x1 = tmp;
+ }
+ }
+ return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
+ },
+ drawTitle: function(pt, vm, ctx, opacity) {
+ var title = vm.title;
- // Body width
- ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
- helpers.each(vm.beforeBody.concat(vm.afterBody), maxLineWidth);
+ if (title.length) {
+ ctx.textAlign = vm._titleAlign;
+ ctx.textBaseline = 'top';
- // Body lines may include some extra width due to the color box
- widthPadding = body.length > 1 ? (bodyFontSize + 2) : 0;
- helpers.each(body, function(bodyItem) {
- helpers.each(bodyItem.before, maxLineWidth);
- helpers.each(bodyItem.lines, maxLineWidth);
- helpers.each(bodyItem.after, maxLineWidth);
- });
+ var titleFontSize = vm.titleFontSize,
+ titleSpacing = vm.titleSpacing;
- // Reset back to 0
- widthPadding = 0;
+ ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity);
+ ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
- // Footer width
- ctx.font = helpers.fontString(footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
- helpers.each(vm.footer, maxLineWidth);
+ var i, len;
+ for (i = 0, len = title.length; i < len; ++i) {
+ ctx.fillText(title[i], pt.x, pt.y);
+ pt.y += titleFontSize + titleSpacing; // Line Height and spacing
- // Add padding
- size.width += 2 * vm.xPadding;
+ if (i + 1 === title.length) {
+ pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
+ }
+ }
+ }
+ },
+ drawBody: function(pt, vm, ctx, opacity) {
+ var bodyFontSize = vm.bodyFontSize;
+ var bodySpacing = vm.bodySpacing;
+ var body = vm.body;
- return size;
- },
- determineAlignment: function(size) {
- var me = this;
- var model = me._model;
- var chart = me._chart;
- var chartArea = me._chartInstance.chartArea;
+ ctx.textAlign = vm._bodyAlign;
+ ctx.textBaseline = 'top';
- if (model.y < size.height) {
- model.yAlign = 'top';
- } else if (model.y > (chart.height - size.height)) {
- model.yAlign = 'bottom';
- }
+ var textColor = mergeOpacity(vm.bodyFontColor, opacity);
+ ctx.fillStyle = textColor;
+ ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
- var lf, rf; // functions to determine left, right alignment
- var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
- var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
- var midX = (chartArea.left + chartArea.right) / 2;
- var midY = (chartArea.top + chartArea.bottom) / 2;
+ // Before Body
+ var xLinePadding = 0;
+ var fillLineOfText = function(line) {
+ ctx.fillText(line, pt.x + xLinePadding, pt.y);
+ pt.y += bodyFontSize + bodySpacing;
+ };
- if (model.yAlign === 'center') {
- lf = function(x) {
- return x <= midX;
- };
- rf = function(x) {
- return x > midX;
- };
- } else {
- lf = function(x) {
- return x <= (size.width / 2);
- };
- rf = function(x) {
- return x >= (chart.width - (size.width / 2));
- };
- }
+ // Before body lines
+ helpers.each(vm.beforeBody, fillLineOfText);
- olf = function(x) {
- return x + size.width > chart.width;
- };
- orf = function(x) {
- return x - size.width < 0;
- };
- yf = function(y) {
- return y <= midY ? 'top' : 'bottom';
- };
+ var drawColorBoxes = vm.displayColors;
+ xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
- if (lf(model.x)) {
- model.xAlign = 'left';
+ // Draw body lines now
+ helpers.each(body, function(bodyItem, i) {
+ helpers.each(bodyItem.before, fillLineOfText);
- // Is tooltip too wide and goes over the right side of the chart.?
- if (olf(model.x)) {
- model.xAlign = 'center';
- model.yAlign = yf(model.y);
- }
- } else if (rf(model.x)) {
- model.xAlign = 'right';
+ helpers.each(bodyItem.lines, function(line) {
+ // Draw Legend-like boxes if needed
+ if (drawColorBoxes) {
+ // Fill a white rect so that colours merge nicely if the opacity is < 1
+ ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity);
+ ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
- // Is tooltip too wide and goes outside left edge of canvas?
- if (orf(model.x)) {
- model.xAlign = 'center';
- model.yAlign = yf(model.y);
- }
- }
- },
- getBackgroundPoint: function(vm, size) {
- // Background Position
- var pt = {
- x: vm.x,
- y: vm.y
- };
+ // Border
+ ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity);
+ ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
- var caretSize = vm.caretSize,
- caretPadding = vm.caretPadding,
- cornerRadius = vm.cornerRadius,
- xAlign = vm.xAlign,
- yAlign = vm.yAlign,
- paddingAndSize = caretSize + caretPadding,
- radiusAndPadding = cornerRadius + caretPadding;
+ // Inner square
+ ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity);
+ ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
- if (xAlign === 'right') {
- pt.x -= size.width;
- } else if (xAlign === 'center') {
- pt.x -= (size.width / 2);
- }
+ ctx.fillStyle = textColor;
+ }
- if (yAlign === 'top') {
- pt.y += paddingAndSize;
- } else if (yAlign === 'bottom') {
- pt.y -= size.height + paddingAndSize;
- } else {
- pt.y -= (size.height / 2);
- }
+ fillLineOfText(line);
+ });
- if (yAlign === 'center') {
- if (xAlign === 'left') {
- pt.x += paddingAndSize;
- } else if (xAlign === 'right') {
- pt.x -= paddingAndSize;
- }
- } else {
- if (xAlign === 'left') {
- pt.x -= radiusAndPadding;
- } else if (xAlign === 'right') {
- pt.x += radiusAndPadding;
- }
- }
+ helpers.each(bodyItem.after, fillLineOfText);
+ });
- return pt;
- },
- drawCaret: function(tooltipPoint, size, opacity) {
- var vm = this._view;
- var ctx = this._chart.ctx;
- var x1, x2, x3;
- var y1, y2, y3;
- var caretSize = vm.caretSize;
- var cornerRadius = vm.cornerRadius;
- var xAlign = vm.xAlign,
- yAlign = vm.yAlign;
- var ptX = tooltipPoint.x,
- ptY = tooltipPoint.y;
- var width = size.width,
- height = size.height;
+ // Reset back to 0 for after body
+ xLinePadding = 0;
- if (yAlign === 'center') {
- // Left or right side
- if (xAlign === 'left') {
- x1 = ptX;
- x2 = x1 - caretSize;
- x3 = x1;
- } else {
- x1 = ptX + width;
- x2 = x1 + caretSize;
- x3 = x1;
- }
+ // After body lines
+ helpers.each(vm.afterBody, fillLineOfText);
+ pt.y -= bodySpacing; // Remove last body spacing
+ },
+ drawFooter: function(pt, vm, ctx, opacity) {
+ var footer = vm.footer;
- y2 = ptY + (height / 2);
- y1 = y2 - caretSize;
- y3 = y2 + caretSize;
- } else {
- if (xAlign === 'left') {
- x1 = ptX + cornerRadius;
- x2 = x1 + caretSize;
- x3 = x2 + caretSize;
- } else if (xAlign === 'right') {
- x1 = ptX + width - cornerRadius;
- x2 = x1 - caretSize;
- x3 = x2 - caretSize;
- } else {
- x2 = ptX + (width / 2);
- x1 = x2 - caretSize;
- x3 = x2 + caretSize;
- }
+ if (footer.length) {
+ pt.y += vm.footerMarginTop;
- if (yAlign === 'top') {
- y1 = ptY;
- y2 = y1 - caretSize;
- y3 = y1;
- } else {
- y1 = ptY + height;
- y2 = y1 + caretSize;
- y3 = y1;
- }
- }
+ ctx.textAlign = vm._footerAlign;
+ ctx.textBaseline = 'top';
- var bgColor = helpers.color(vm.backgroundColor);
- ctx.fillStyle = bgColor.alpha(opacity * bgColor.alpha()).rgbString();
- ctx.beginPath();
- ctx.moveTo(x1, y1);
- ctx.lineTo(x2, y2);
- ctx.lineTo(x3, y3);
- ctx.closePath();
- ctx.fill();
- },
- drawTitle: function(pt, vm, ctx, opacity) {
- var title = vm.title;
+ ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity);
+ ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
- if (title.length) {
- ctx.textAlign = vm._titleAlign;
- ctx.textBaseline = "top";
+ helpers.each(footer, function(line) {
+ ctx.fillText(line, pt.x, pt.y);
+ pt.y += vm.footerFontSize + vm.footerSpacing;
+ });
+ }
+ },
+ drawBackground: function(pt, vm, ctx, tooltipSize, opacity) {
+ ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
+ ctx.strokeStyle = mergeOpacity(vm.borderColor, opacity);
+ ctx.lineWidth = vm.borderWidth;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var x = pt.x;
+ var y = pt.y;
+ var width = tooltipSize.width;
+ var height = tooltipSize.height;
+ var radius = vm.cornerRadius;
- var titleFontSize = vm.titleFontSize,
- titleSpacing = vm.titleSpacing;
+ ctx.beginPath();
+ ctx.moveTo(x + radius, y);
+ if (yAlign === 'top') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width - radius, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+ if (yAlign === 'center' && xAlign === 'right') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width, y + height - radius);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+ if (yAlign === 'bottom') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + radius, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+ if (yAlign === 'center' && xAlign === 'left') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x, y + radius);
+ ctx.quadraticCurveTo(x, y, x + radius, y);
+ ctx.closePath();
- var titleFontColor = helpers.color(vm.titleFontColor);
- ctx.fillStyle = titleFontColor.alpha(opacity * titleFontColor.alpha()).rgbString();
- ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
+ ctx.fill();
- var i, len;
- for (i = 0, len = title.length; i < len; ++i) {
- ctx.fillText(title[i], pt.x, pt.y);
- pt.y += titleFontSize + titleSpacing; // Line Height and spacing
+ if (vm.borderWidth > 0) {
+ ctx.stroke();
+ }
+ },
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
- if (i + 1 === title.length) {
- pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
- }
- }
- }
- },
- drawBody: function(pt, vm, ctx, opacity) {
- var bodyFontSize = vm.bodyFontSize;
- var bodySpacing = vm.bodySpacing;
- var body = vm.body;
+ if (vm.opacity === 0) {
+ return;
+ }
- ctx.textAlign = vm._bodyAlign;
- ctx.textBaseline = "top";
+ var tooltipSize = {
+ width: vm.width,
+ height: vm.height
+ };
+ var pt = {
+ x: vm.x,
+ y: vm.y
+ };
- var bodyFontColor = helpers.color(vm.bodyFontColor);
- var textColor = bodyFontColor.alpha(opacity * bodyFontColor.alpha()).rgbString();
- ctx.fillStyle = textColor;
- ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
+ // IE11/Edge does not like very small opacities, so snap to 0
+ var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
- // Before Body
- var xLinePadding = 0;
- var fillLineOfText = function(line) {
- ctx.fillText(line, pt.x + xLinePadding, pt.y);
- pt.y += bodyFontSize + bodySpacing;
- };
+ // Truthy/falsey value for empty tooltip
+ var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
- // Before body lines
- helpers.each(vm.beforeBody, fillLineOfText);
+ if (this._options.enabled && hasTooltipContent) {
+ // Draw Background
+ this.drawBackground(pt, vm, ctx, tooltipSize, opacity);
- var drawColorBoxes = body.length > 1;
- xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
+ // Draw Title, Body, and Footer
+ pt.x += vm.xPadding;
+ pt.y += vm.yPadding;
- // Draw body lines now
- helpers.each(body, function(bodyItem, i) {
- helpers.each(bodyItem.before, fillLineOfText);
+ // Titles
+ this.drawTitle(pt, vm, ctx, opacity);
- helpers.each(bodyItem.lines, function(line) {
- // Draw Legend-like boxes if needed
- if (drawColorBoxes) {
- // Fill a white rect so that colours merge nicely if the opacity is < 1
- ctx.fillStyle = helpers.color(vm.legendColorBackground).alpha(opacity).rgbaString();
- ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
+ // Body
+ this.drawBody(pt, vm, ctx, opacity);
- // Border
- ctx.strokeStyle = helpers.color(vm.labelColors[i].borderColor).alpha(opacity).rgbaString();
- ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
+ // Footer
+ this.drawFooter(pt, vm, ctx, opacity);
+ }
+ },
- // Inner square
- ctx.fillStyle = helpers.color(vm.labelColors[i].backgroundColor).alpha(opacity).rgbaString();
- ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ * @returns {Boolean} true if the tooltip changed
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me._options;
+ var changed = false;
- ctx.fillStyle = textColor;
- }
+ me._lastActive = me._lastActive || [];
- fillLineOfText(line);
- });
+ // Find Active Elements for tooltips
+ if (e.type === 'mouseout') {
+ me._active = [];
+ } else {
+ me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
+ }
- helpers.each(bodyItem.after, fillLineOfText);
- });
+ // Remember Last Actives
+ changed = !helpers.arrayEquals(me._active, me._lastActive);
- // Reset back to 0 for after body
- xLinePadding = 0;
+ // If tooltip didn't change, do not handle the target event
+ if (!changed) {
+ return false;
+ }
- // After body lines
- helpers.each(vm.afterBody, fillLineOfText);
- pt.y -= bodySpacing; // Remove last body spacing
- },
- drawFooter: function(pt, vm, ctx, opacity) {
- var footer = vm.footer;
+ me._lastActive = me._active;
- if (footer.length) {
- pt.y += vm.footerMarginTop;
+ if (options.enabled || options.custom) {
+ me._eventPosition = {
+ x: e.x,
+ y: e.y
+ };
- ctx.textAlign = vm._footerAlign;
- ctx.textBaseline = "top";
+ var model = me._model;
+ me.update(true);
+ me.pivot();
- var footerFontColor = helpers.color(vm.footerFontColor);
- ctx.fillStyle = footerFontColor.alpha(opacity * footerFontColor.alpha()).rgbString();
- ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
+ // See if our tooltip position changed
+ changed |= (model.x !== me._model.x) || (model.y !== me._model.y);
+ }
- helpers.each(footer, function(line) {
- ctx.fillText(line, pt.x, pt.y);
- pt.y += vm.footerFontSize + vm.footerSpacing;
- });
- }
- },
- draw: function() {
- var ctx = this._chart.ctx;
- var vm = this._view;
+ return changed;
+ }
+ });
- if (vm.opacity === 0) {
- return;
- }
+ /**
+ * @namespace Chart.Tooltip.positioners
+ */
+ Chart.Tooltip.positioners = {
+ /**
+ * Average mode places the tooltip at the average position of the elements shown
+ * @function Chart.Tooltip.positioners.average
+ * @param elements {ChartElement[]} the elements being displayed in the tooltip
+ * @returns {Point} tooltip position
+ */
+ average: function(elements) {
+ if (!elements.length) {
+ return false;
+ }
- var tooltipSize = this.getTooltipSize(vm);
- var pt = {
- x: vm.x,
- y: vm.y
- };
+ var i, len;
+ var x = 0;
+ var y = 0;
+ var count = 0;
- // IE11/Edge does not like very small opacities, so snap to 0
- var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var pos = el.tooltipPosition();
+ x += pos.x;
+ y += pos.y;
+ ++count;
+ }
+ }
- if (this._options.enabled) {
- // Draw Background
- var bgColor = helpers.color(vm.backgroundColor);
- ctx.fillStyle = bgColor.alpha(opacity * bgColor.alpha()).rgbString();
- helpers.drawRoundedRectangle(ctx, pt.x, pt.y, tooltipSize.width, tooltipSize.height, vm.cornerRadius);
- ctx.fill();
+ return {
+ x: Math.round(x / count),
+ y: Math.round(y / count)
+ };
+ },
- // Draw Caret
- this.drawCaret(pt, tooltipSize, opacity);
+ /**
+ * Gets the tooltip position nearest of the item nearest to the event position
+ * @function Chart.Tooltip.positioners.nearest
+ * @param elements {Chart.Element[]} the tooltip elements
+ * @param eventPosition {Point} the position of the event in canvas coordinates
+ * @returns {Point} the tooltip position
+ */
+ nearest: function(elements, eventPosition) {
+ var x = eventPosition.x;
+ var y = eventPosition.y;
- // Draw Title, Body, and Footer
- pt.x += vm.xPadding;
- pt.y += vm.yPadding;
+ var nearestElement;
+ var minDistance = Number.POSITIVE_INFINITY;
+ var i, len;
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var center = el.getCenterPoint();
+ var d = helpers.distanceBetweenPoints(eventPosition, center);
- // Titles
- this.drawTitle(pt, vm, ctx, opacity);
+ if (d < minDistance) {
+ minDistance = d;
+ nearestElement = el;
+ }
+ }
+ }
- // Body
- this.drawBody(pt, vm, ctx, opacity);
+ if (nearestElement) {
+ var tp = nearestElement.tooltipPosition();
+ x = tp.x;
+ y = tp.y;
+ }
- // Footer
- this.drawFooter(pt, vm, ctx, opacity);
- }
- }
- });
-};
+ return {
+ x: x,
+ y: y
+ };
+ }
+ };
+ };
},{}],35:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers,
- globalOpts = Chart.defaults.global;
+ var helpers = Chart.helpers,
+ globalOpts = Chart.defaults.global;
- globalOpts.elements.arc = {
- backgroundColor: globalOpts.defaultColor,
- borderColor: "#fff",
- borderWidth: 2
- };
+ globalOpts.elements.arc = {
+ backgroundColor: globalOpts.defaultColor,
+ borderColor: '#fff',
+ borderWidth: 2
+ };
- Chart.elements.Arc = Chart.Element.extend({
- inLabelRange: function(mouseX) {
- var vm = this._view;
+ Chart.elements.Arc = Chart.Element.extend({
+ inLabelRange: function(mouseX) {
+ var vm = this._view;
- if (vm) {
- return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
- } else {
- return false;
- }
- },
- inRange: function(chartX, chartY) {
- var vm = this._view;
+ if (vm) {
+ return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
+ }
+ return false;
+ },
+ inRange: function(chartX, chartY) {
+ var vm = this._view;
- if (vm) {
- var pointRelativePosition = helpers.getAngleFromPoint(vm, {
- x: chartX,
- y: chartY
- }),
- angle = pointRelativePosition.angle,
- distance = pointRelativePosition.distance;
+ if (vm) {
+ var pointRelativePosition = helpers.getAngleFromPoint(vm, {
+ x: chartX,
+ y: chartY
+ }),
+ angle = pointRelativePosition.angle,
+ distance = pointRelativePosition.distance;
- //Sanitise angle range
- var startAngle = vm.startAngle;
- var endAngle = vm.endAngle;
- while (endAngle < startAngle) {
- endAngle += 2.0 * Math.PI;
- }
- while (angle > endAngle) {
- angle -= 2.0 * Math.PI;
- }
- while (angle < startAngle) {
- angle += 2.0 * Math.PI;
- }
+ // Sanitise angle range
+ var startAngle = vm.startAngle;
+ var endAngle = vm.endAngle;
+ while (endAngle < startAngle) {
+ endAngle += 2.0 * Math.PI;
+ }
+ while (angle > endAngle) {
+ angle -= 2.0 * Math.PI;
+ }
+ while (angle < startAngle) {
+ angle += 2.0 * Math.PI;
+ }
- //Check if within the range of the open/close angle
- var betweenAngles = (angle >= startAngle && angle <= endAngle),
- withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
+ // Check if within the range of the open/close angle
+ var betweenAngles = (angle >= startAngle && angle <= endAngle),
+ withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
- return (betweenAngles && withinRadius);
- } else {
- return false;
- }
- },
- tooltipPosition: function() {
- var vm = this._view;
+ return (betweenAngles && withinRadius);
+ }
+ return false;
+ },
+ getCenterPoint: function() {
+ var vm = this._view;
+ var halfAngle = (vm.startAngle + vm.endAngle) / 2;
+ var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
+ return {
+ x: vm.x + Math.cos(halfAngle) * halfRadius,
+ y: vm.y + Math.sin(halfAngle) * halfRadius
+ };
+ },
+ getArea: function() {
+ var vm = this._view;
+ return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
+ },
+ tooltipPosition: function() {
+ var vm = this._view;
- var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2),
- rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
- return {
- x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
- y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
- };
- },
- draw: function() {
+ var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2),
+ rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
+ return {
+ x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
+ y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
+ };
+ },
+ draw: function() {
- var ctx = this._chart.ctx,
- vm = this._view,
- sA = vm.startAngle,
- eA = vm.endAngle;
+ var ctx = this._chart.ctx,
+ vm = this._view,
+ sA = vm.startAngle,
+ eA = vm.endAngle;
- ctx.beginPath();
+ ctx.beginPath();
- ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
- ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
+ ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
+ ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
- ctx.closePath();
- ctx.strokeStyle = vm.borderColor;
- ctx.lineWidth = vm.borderWidth;
+ ctx.closePath();
+ ctx.strokeStyle = vm.borderColor;
+ ctx.lineWidth = vm.borderWidth;
- ctx.fillStyle = vm.backgroundColor;
+ ctx.fillStyle = vm.backgroundColor;
- ctx.fill();
- ctx.lineJoin = 'bevel';
+ ctx.fill();
+ ctx.lineJoin = 'bevel';
- if (vm.borderWidth) {
- ctx.stroke();
- }
- }
- });
-};
+ if (vm.borderWidth) {
+ ctx.stroke();
+ }
+ }
+ });
+ };
},{}],36:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
- var globalDefaults = Chart.defaults.global;
+ var helpers = Chart.helpers;
+ var globalDefaults = Chart.defaults.global;
- Chart.defaults.global.elements.line = {
- tension: 0.4,
- backgroundColor: globalDefaults.defaultColor,
- borderWidth: 3,
- borderColor: globalDefaults.defaultColor,
- borderCapStyle: 'butt',
- borderDash: [],
- borderDashOffset: 0.0,
- borderJoinStyle: 'miter',
- capBezierPoints: true,
- fill: true // do we fill in the area between the line and its base axis
- };
+ Chart.defaults.global.elements.line = {
+ tension: 0.4,
+ backgroundColor: globalDefaults.defaultColor,
+ borderWidth: 3,
+ borderColor: globalDefaults.defaultColor,
+ borderCapStyle: 'butt',
+ borderDash: [],
+ borderDashOffset: 0.0,
+ borderJoinStyle: 'miter',
+ capBezierPoints: true,
+ fill: true, // do we fill in the area between the line and its base axis
+ };
- Chart.elements.Line = Chart.Element.extend({
- draw: function() {
- var me = this;
- var vm = me._view;
- var spanGaps = vm.spanGaps;
- var scaleZero = vm.scaleZero;
- var loop = me._loop;
+ Chart.elements.Line = Chart.Element.extend({
+ draw: function() {
+ var me = this;
+ var vm = me._view;
+ var ctx = me._chart.ctx;
+ var spanGaps = vm.spanGaps;
+ var points = me._children.slice(); // clone array
+ var globalOptionLineElements = globalDefaults.elements.line;
+ var lastDrawnIndex = -1;
+ var index, current, previous, currentVM;
- var ctx = me._chart.ctx;
- ctx.save();
+ // If we are looping, adding the first point again
+ if (me._loop && points.length) {
+ points.push(points[0]);
+ }
- // Helper function to draw a line to a point
- function lineToPoint(previousPoint, point) {
- var vm = point._view;
- if (point._view.steppedLine === true) {
- ctx.lineTo(point._view.x, previousPoint._view.y);
- ctx.lineTo(point._view.x, point._view.y);
- } else if (point._view.tension === 0) {
- ctx.lineTo(vm.x, vm.y);
- } else {
- ctx.bezierCurveTo(
- previousPoint._view.controlPointNextX,
- previousPoint._view.controlPointNextY,
- vm.controlPointPreviousX,
- vm.controlPointPreviousY,
- vm.x,
- vm.y
- );
- }
- }
+ ctx.save();
- var points = me._children.slice(); // clone array
- var lastDrawnIndex = -1;
+ // Stroke Line Options
+ ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
- // If we are looping, adding the first point again
- if (loop && points.length) {
- points.push(points[0]);
- }
+ // IE 9 and 10 do not support line dash
+ if (ctx.setLineDash) {
+ ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
+ }
- var index, current, previous, currentVM;
+ ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
+ ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
+ ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
+ ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
- // Fill Line
- if (points.length && vm.fill) {
- ctx.beginPath();
+ // Stroke Line
+ ctx.beginPath();
+ lastDrawnIndex = -1;
- for (index = 0; index < points.length; ++index) {
- current = points[index];
- previous = helpers.previousItem(points, index);
- currentVM = current._view;
+ for (index = 0; index < points.length; ++index) {
+ current = points[index];
+ previous = helpers.previousItem(points, index);
+ currentVM = current._view;
- // First point moves to it's starting position no matter what
- if (index === 0) {
- if (loop) {
- ctx.moveTo(scaleZero.x, scaleZero.y);
- } else {
- ctx.moveTo(currentVM.x, scaleZero);
- }
+ // First point moves to it's starting position no matter what
+ if (index === 0) {
+ if (!currentVM.skip) {
+ ctx.moveTo(currentVM.x, currentVM.y);
+ lastDrawnIndex = index;
+ }
+ } else {
+ previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
- if (!currentVM.skip) {
- lastDrawnIndex = index;
- ctx.lineTo(currentVM.x, currentVM.y);
- }
- } else {
- previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
+ if (!currentVM.skip) {
+ if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
+ // There was a gap and this is the first point after the gap
+ ctx.moveTo(currentVM.x, currentVM.y);
+ } else {
+ // Line to next point
+ helpers.canvas.lineTo(ctx, previous._view, current._view);
+ }
+ lastDrawnIndex = index;
+ }
+ }
+ }
- if (currentVM.skip) {
- // Only do this if this is the first point that is skipped
- if (!spanGaps && lastDrawnIndex === (index - 1)) {
- if (loop) {
- ctx.lineTo(scaleZero.x, scaleZero.y);
- } else {
- ctx.lineTo(previous._view.x, scaleZero);
- }
- }
- } else {
- if (lastDrawnIndex !== (index - 1)) {
- // There was a gap and this is the first point after the gap. If we've never drawn a point, this is a special case.
- // If the first data point is NaN, then there is no real gap to skip
- if (spanGaps && lastDrawnIndex !== -1) {
- // We are spanning the gap, so simple draw a line to this point
- lineToPoint(previous, current);
- } else {
- if (loop) {
- ctx.lineTo(currentVM.x, currentVM.y);
- } else {
- ctx.lineTo(currentVM.x, scaleZero);
- ctx.lineTo(currentVM.x, currentVM.y);
- }
- }
- } else {
- // Line to next point
- lineToPoint(previous, current);
- }
- lastDrawnIndex = index;
- }
- }
- }
+ ctx.stroke();
+ ctx.restore();
+ }
+ });
+ };
- if (!loop) {
- ctx.lineTo(points[lastDrawnIndex]._view.x, scaleZero);
- }
-
- ctx.fillStyle = vm.backgroundColor || globalDefaults.defaultColor;
- ctx.closePath();
- ctx.fill();
- }
-
- // Stroke Line Options
- var globalOptionLineElements = globalDefaults.elements.line;
- ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
-
- // IE 9 and 10 do not support line dash
- if (ctx.setLineDash) {
- ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
- }
-
- ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
- ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
- ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
- ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
-
- // Stroke Line
- ctx.beginPath();
- lastDrawnIndex = -1;
-
- for (index = 0; index < points.length; ++index) {
- current = points[index];
- previous = helpers.previousItem(points, index);
- currentVM = current._view;
-
- // First point moves to it's starting position no matter what
- if (index === 0) {
- if (currentVM.skip) {
-
- } else {
- ctx.moveTo(currentVM.x, currentVM.y);
- lastDrawnIndex = index;
- }
- } else {
- previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
-
- if (!currentVM.skip) {
- if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
- // There was a gap and this is the first point after the gap
- ctx.moveTo(currentVM.x, currentVM.y);
- } else {
- // Line to next point
- lineToPoint(previous, current);
- }
- lastDrawnIndex = index;
- }
- }
- }
-
- ctx.stroke();
- ctx.restore();
- }
- });
-};
},{}],37:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers,
- globalOpts = Chart.defaults.global,
- defaultColor = globalOpts.defaultColor;
+ var helpers = Chart.helpers,
+ globalOpts = Chart.defaults.global,
+ defaultColor = globalOpts.defaultColor;
- globalOpts.elements.point = {
- radius: 3,
- pointStyle: 'circle',
- backgroundColor: defaultColor,
- borderWidth: 1,
- borderColor: defaultColor,
- // Hover
- hitRadius: 1,
- hoverRadius: 4,
- hoverBorderWidth: 1
- };
+ globalOpts.elements.point = {
+ radius: 3,
+ pointStyle: 'circle',
+ backgroundColor: defaultColor,
+ borderWidth: 1,
+ borderColor: defaultColor,
+ // Hover
+ hitRadius: 1,
+ hoverRadius: 4,
+ hoverBorderWidth: 1
+ };
- Chart.elements.Point = Chart.Element.extend({
- inRange: function(mouseX, mouseY) {
- var vm = this._view;
- return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
- },
- inLabelRange: function(mouseX) {
- var vm = this._view;
- return vm ? (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hitRadius, 2)) : false;
- },
- tooltipPosition: function() {
- var vm = this._view;
- return {
- x: vm.x,
- y: vm.y,
- padding: vm.radius + vm.borderWidth
- };
- },
- draw: function() {
- var vm = this._view;
- var ctx = this._chart.ctx;
- var pointStyle = vm.pointStyle;
- var radius = vm.radius;
- var x = vm.x;
- var y = vm.y;
+ function xRange(mouseX) {
+ var vm = this._view;
+ return vm ? (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hitRadius, 2)) : false;
+ }
- if (vm.skip) {
- return;
- }
+ function yRange(mouseY) {
+ var vm = this._view;
+ return vm ? (Math.pow(mouseY - vm.y, 2) < Math.pow(vm.radius + vm.hitRadius, 2)) : false;
+ }
- ctx.strokeStyle = vm.borderColor || defaultColor;
- ctx.lineWidth = helpers.getValueOrDefault(vm.borderWidth, globalOpts.elements.point.borderWidth);
- ctx.fillStyle = vm.backgroundColor || defaultColor;
+ Chart.elements.Point = Chart.Element.extend({
+ inRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
+ },
- Chart.canvasHelpers.drawPoint(ctx, pointStyle, radius, x, y);
- }
- });
-};
+ inLabelRange: xRange,
+ inXRange: xRange,
+ inYRange: yRange,
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ },
+ getArea: function() {
+ return Math.PI * Math.pow(this._view.radius, 2);
+ },
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y,
+ padding: vm.radius + vm.borderWidth
+ };
+ },
+ draw: function(chartArea) {
+ var vm = this._view;
+ var model = this._model;
+ var ctx = this._chart.ctx;
+ var pointStyle = vm.pointStyle;
+ var radius = vm.radius;
+ var x = vm.x;
+ var y = vm.y;
+ var color = Chart.helpers.color;
+ var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.)
+ var ratio = 0;
+
+ if (vm.skip) {
+ return;
+ }
+
+ ctx.strokeStyle = vm.borderColor || defaultColor;
+ ctx.lineWidth = helpers.getValueOrDefault(vm.borderWidth, globalOpts.elements.point.borderWidth);
+ ctx.fillStyle = vm.backgroundColor || defaultColor;
+
+ // Cliping for Points.
+ // going out from inner charArea?
+ if ((chartArea !== undefined) && ((model.x < chartArea.left) || (chartArea.right*errMargin < model.x) || (model.y < chartArea.top) || (chartArea.bottom*errMargin < model.y))) {
+ // Point fade out
+ if (model.x < chartArea.left) {
+ ratio = (x - model.x) / (chartArea.left - model.x);
+ } else if (chartArea.right*errMargin < model.x) {
+ ratio = (model.x - x) / (model.x - chartArea.right);
+ } else if (model.y < chartArea.top) {
+ ratio = (y - model.y) / (chartArea.top - model.y);
+ } else if (chartArea.bottom*errMargin < model.y) {
+ ratio = (model.y - y) / (model.y - chartArea.bottom);
+ }
+ ratio = Math.round(ratio*100) / 100;
+ ctx.strokeStyle = color(ctx.strokeStyle).alpha(ratio).rgbString();
+ ctx.fillStyle = color(ctx.fillStyle).alpha(ratio).rgbString();
+ }
+
+ Chart.canvasHelpers.drawPoint(ctx, pointStyle, radius, x, y);
+ }
+ });
+ };
},{}],38:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var globalOpts = Chart.defaults.global;
+ var globalOpts = Chart.defaults.global;
- globalOpts.elements.rectangle = {
- backgroundColor: globalOpts.defaultColor,
- borderWidth: 0,
- borderColor: globalOpts.defaultColor,
- borderSkipped: 'bottom'
- };
+ globalOpts.elements.rectangle = {
+ backgroundColor: globalOpts.defaultColor,
+ borderWidth: 0,
+ borderColor: globalOpts.defaultColor,
+ borderSkipped: 'bottom'
+ };
- Chart.elements.Rectangle = Chart.Element.extend({
- draw: function() {
- var ctx = this._chart.ctx;
- var vm = this._view;
+ function isVertical(bar) {
+ return bar._view.width !== undefined;
+ }
- var halfWidth = vm.width / 2,
- leftX = vm.x - halfWidth,
- rightX = vm.x + halfWidth,
- top = vm.base - (vm.base - vm.y),
- halfStroke = vm.borderWidth / 2;
+ /**
+ * Helper function to get the bounds of the bar regardless of the orientation
+ * @private
+ * @param bar {Chart.Element.Rectangle} the bar
+ * @return {Bounds} bounds of the bar
+ */
+ function getBarBounds(bar) {
+ var vm = bar._view;
+ var x1, x2, y1, y2;
- // Canvas doesn't allow us to stroke inside the width so we can
- // adjust the sizes to fit if we're setting a stroke on the line
- if (vm.borderWidth) {
- leftX += halfStroke;
- rightX -= halfStroke;
- top += halfStroke;
- }
+ if (isVertical(bar)) {
+ // vertical
+ var halfWidth = vm.width / 2;
+ x1 = vm.x - halfWidth;
+ x2 = vm.x + halfWidth;
+ y1 = Math.min(vm.y, vm.base);
+ y2 = Math.max(vm.y, vm.base);
+ } else {
+ // horizontal bar
+ var halfHeight = vm.height / 2;
+ x1 = Math.min(vm.x, vm.base);
+ x2 = Math.max(vm.x, vm.base);
+ y1 = vm.y - halfHeight;
+ y2 = vm.y + halfHeight;
+ }
- ctx.beginPath();
- ctx.fillStyle = vm.backgroundColor;
- ctx.strokeStyle = vm.borderColor;
- ctx.lineWidth = vm.borderWidth;
+ return {
+ left: x1,
+ top: y1,
+ right: x2,
+ bottom: y2
+ };
+ }
- // Corner points, from bottom-left to bottom-right clockwise
- // | 1 2 |
- // | 0 3 |
- var corners = [
- [leftX, vm.base],
- [leftX, top],
- [rightX, top],
- [rightX, vm.base]
- ];
+ Chart.elements.Rectangle = Chart.Element.extend({
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var left, right, top, bottom, signX, signY, borderSkipped;
+ var borderWidth = vm.borderWidth;
- // Find first (starting) corner with fallback to 'bottom'
- var borders = ['bottom', 'left', 'top', 'right'];
- var startCorner = borders.indexOf(vm.borderSkipped, 0);
- if (startCorner === -1)
- startCorner = 0;
+ if (!vm.horizontal) {
+ // bar
+ left = vm.x - vm.width / 2;
+ right = vm.x + vm.width / 2;
+ top = vm.y;
+ bottom = vm.base;
+ signX = 1;
+ signY = bottom > top? 1: -1;
+ borderSkipped = vm.borderSkipped || 'bottom';
+ } else {
+ // horizontal bar
+ left = vm.base;
+ right = vm.x;
+ top = vm.y - vm.height / 2;
+ bottom = vm.y + vm.height / 2;
+ signX = right > left? 1: -1;
+ signY = 1;
+ borderSkipped = vm.borderSkipped || 'left';
+ }
- function cornerAt(index) {
- return corners[(startCorner + index) % 4];
- }
+ // Canvas doesn't allow us to stroke inside the width so we can
+ // adjust the sizes to fit if we're setting a stroke on the line
+ if (borderWidth) {
+ // borderWidth shold be less than bar width and bar height.
+ var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom));
+ borderWidth = borderWidth > barSize? barSize: borderWidth;
+ var halfStroke = borderWidth / 2;
+ // Adjust borderWidth when bar top position is near vm.base(zero).
+ var borderLeft = left + (borderSkipped !== 'left'? halfStroke * signX: 0);
+ var borderRight = right + (borderSkipped !== 'right'? -halfStroke * signX: 0);
+ var borderTop = top + (borderSkipped !== 'top'? halfStroke * signY: 0);
+ var borderBottom = bottom + (borderSkipped !== 'bottom'? -halfStroke * signY: 0);
+ // not become a vertical line?
+ if (borderLeft !== borderRight) {
+ top = borderTop;
+ bottom = borderBottom;
+ }
+ // not become a horizontal line?
+ if (borderTop !== borderBottom) {
+ left = borderLeft;
+ right = borderRight;
+ }
+ }
- // Draw rectangle from 'startCorner'
- ctx.moveTo.apply(ctx, cornerAt(0));
- for (var i = 1; i < 4; i++)
- ctx.lineTo.apply(ctx, cornerAt(i));
+ ctx.beginPath();
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.strokeStyle = vm.borderColor;
+ ctx.lineWidth = borderWidth;
- ctx.fill();
- if (vm.borderWidth) {
- ctx.stroke();
- }
- },
- height: function() {
- var vm = this._view;
- return vm.base - vm.y;
- },
- inRange: function(mouseX, mouseY) {
- var vm = this._view;
- return vm ?
- (vm.y < vm.base ?
- (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.y && mouseY <= vm.base) :
- (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.base && mouseY <= vm.y)) :
- false;
- },
- inLabelRange: function(mouseX) {
- var vm = this._view;
- return vm ? (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) : false;
- },
- tooltipPosition: function() {
- var vm = this._view;
- return {
- x: vm.x,
- y: vm.y
- };
- }
- });
+ // Corner points, from bottom-left to bottom-right clockwise
+ // | 1 2 |
+ // | 0 3 |
+ var corners = [
+ [left, bottom],
+ [left, top],
+ [right, top],
+ [right, bottom]
+ ];
-};
+ // Find first (starting) corner with fallback to 'bottom'
+ var borders = ['bottom', 'left', 'top', 'right'];
+ var startCorner = borders.indexOf(borderSkipped, 0);
+ if (startCorner === -1) {
+ startCorner = 0;
+ }
+
+ function cornerAt(index) {
+ return corners[(startCorner + index) % 4];
+ }
+
+ // Draw rectangle from 'startCorner'
+ var corner = cornerAt(0);
+ ctx.moveTo(corner[0], corner[1]);
+
+ for (var i = 1; i < 4; i++) {
+ corner = cornerAt(i);
+ ctx.lineTo(corner[0], corner[1]);
+ }
+
+ ctx.fill();
+ if (borderWidth) {
+ ctx.stroke();
+ }
+ },
+ height: function() {
+ var vm = this._view;
+ return vm.base - vm.y;
+ },
+ inRange: function(mouseX, mouseY) {
+ var inRange = false;
+
+ if (this._view) {
+ var bounds = getBarBounds(this);
+ inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
+ }
+
+ return inRange;
+ },
+ inLabelRange: function(mouseX, mouseY) {
+ var me = this;
+ if (!me._view) {
+ return false;
+ }
+
+ var inRange = false;
+ var bounds = getBarBounds(me);
+
+ if (isVertical(me)) {
+ inRange = mouseX >= bounds.left && mouseX <= bounds.right;
+ } else {
+ inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
+ }
+
+ return inRange;
+ },
+ inXRange: function(mouseX) {
+ var bounds = getBarBounds(this);
+ return mouseX >= bounds.left && mouseX <= bounds.right;
+ },
+ inYRange: function(mouseY) {
+ var bounds = getBarBounds(this);
+ return mouseY >= bounds.top && mouseY <= bounds.bottom;
+ },
+ getCenterPoint: function() {
+ var vm = this._view;
+ var x, y;
+ if (isVertical(this)) {
+ x = vm.x;
+ y = (vm.y + vm.base) / 2;
+ } else {
+ x = (vm.x + vm.base) / 2;
+ y = vm.y;
+ }
+
+ return {x: x, y: y};
+ },
+ getArea: function() {
+ var vm = this._view;
+ return vm.width * Math.abs(vm.y - vm.base);
+ },
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ }
+ });
+
+ };
+
},{}],39:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+// Chart.Platform implementation for targeting a web browser
+ module.exports = function(Chart) {
+ var helpers = Chart.helpers;
- var helpers = Chart.helpers;
- // Default config for a category scale
- var defaultConfig = {
- position: "bottom"
- };
+ // DOM event types -> Chart.js event types.
+ // Note: only events with different types are mapped.
+ // https://developer.mozilla.org/en-US/docs/Web/Events
+ var eventTypeMap = {
+ // Touch events
+ touchstart: 'mousedown',
+ touchmove: 'mousemove',
+ touchend: 'mouseup',
- var DatasetScale = Chart.Scale.extend({
- /**
- * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use tose
- * else fall back to data.labels
- * @private
- */
- getLabels: function() {
- var data = this.chart.data;
- return (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
- },
- // Implement this so that
- determineDataLimits: function() {
- var me = this;
- var labels = me.getLabels();
- me.minIndex = 0;
- me.maxIndex = labels.length - 1;
- var findIndex;
+ // Pointer events
+ pointerenter: 'mouseenter',
+ pointerdown: 'mousedown',
+ pointermove: 'mousemove',
+ pointerup: 'mouseup',
+ pointerleave: 'mouseout',
+ pointerout: 'mouseout'
+ };
- if (me.options.ticks.min !== undefined) {
- // user specified min value
- findIndex = helpers.indexOf(labels, me.options.ticks.min);
- me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
- }
+ /**
+ * The "used" size is the final value of a dimension property after all calculations have
+ * been performed. This method uses the computed style of `element` but returns undefined
+ * if the computed style is not expressed in pixels. That can happen in some cases where
+ * `element` has a size relative to its parent and this last one is not yet displayed,
+ * for example because of `display: none` on a parent node.
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
+ * @returns {Number} Size in pixels or undefined if unknown.
+ */
+ function readUsedSize(element, property) {
+ var value = helpers.getStyle(element, property);
+ var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
+ return matches? Number(matches[1]) : undefined;
+ }
- if (me.options.ticks.max !== undefined) {
- // user specified max value
- findIndex = helpers.indexOf(labels, me.options.ticks.max);
- me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
- }
+ /**
+ * Initializes the canvas style and render size without modifying the canvas display size,
+ * since responsiveness is handled by the controller.resize() method. The config is used
+ * to determine the aspect ratio to apply in case no explicit height has been specified.
+ */
+ function initCanvas(canvas, config) {
+ var style = canvas.style;
- me.min = labels[me.minIndex];
- me.max = labels[me.maxIndex];
- },
+ // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
+ // returns null or '' if no explicit value has been set to the canvas attribute.
+ var renderHeight = canvas.getAttribute('height');
+ var renderWidth = canvas.getAttribute('width');
- buildTicks: function() {
- var me = this;
- var labels = me.getLabels();
- // If we are viewing some subset of labels, slice the original array
- me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
- },
+ // Chart.js modifies some canvas values that we want to restore on destroy
+ canvas._chartjs = {
+ initial: {
+ height: renderHeight,
+ width: renderWidth,
+ style: {
+ display: style.display,
+ height: style.height,
+ width: style.width
+ }
+ }
+ };
- getLabelForIndex: function(index) {
- return this.ticks[index];
- },
+ // Force canvas to display as block to avoid extra space caused by inline
+ // elements, which would interfere with the responsive resize process.
+ // https://github.com/chartjs/Chart.js/issues/2538
+ style.display = style.display || 'block';
- // Used to get data value locations. Value can either be an index or a numerical value
- getPixelForValue: function(value, index, datasetIndex, includeOffset) {
- var me = this;
- // 1 is added because we need the length but we have the indexes
- var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ if (renderWidth === null || renderWidth === '') {
+ var displayWidth = readUsedSize(canvas, 'width');
+ if (displayWidth !== undefined) {
+ canvas.width = displayWidth;
+ }
+ }
- if (value !== undefined) {
- var labels = me.getLabels();
- var idx = labels.indexOf(value);
- index = idx !== -1 ? idx : index;
- }
+ if (renderHeight === null || renderHeight === '') {
+ if (canvas.style.height === '') {
+ // If no explicit render height and style height, let's apply the aspect ratio,
+ // which one can be specified by the user but also by charts as default option
+ // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
+ canvas.height = canvas.width / (config.options.aspectRatio || 2);
+ } else {
+ var displayHeight = readUsedSize(canvas, 'height');
+ if (displayWidth !== undefined) {
+ canvas.height = displayHeight;
+ }
+ }
+ }
- if (me.isHorizontal()) {
- var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
- var valueWidth = innerWidth / offsetAmt;
- var widthOffset = (valueWidth * (index - me.minIndex)) + me.paddingLeft;
+ return canvas;
+ }
- if (me.options.gridLines.offsetGridLines && includeOffset) {
- widthOffset += (valueWidth / 2);
- }
+ function createEvent(type, chart, x, y, nativeEvent) {
+ return {
+ type: type,
+ chart: chart,
+ native: nativeEvent || null,
+ x: x !== undefined? x : null,
+ y: y !== undefined? y : null,
+ };
+ }
- return me.left + Math.round(widthOffset);
- } else {
- var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
- var valueHeight = innerHeight / offsetAmt;
- var heightOffset = (valueHeight * (index - me.minIndex)) + me.paddingTop;
+ function fromNativeEvent(event, chart) {
+ var type = eventTypeMap[event.type] || event.type;
+ var pos = helpers.getRelativePosition(event, chart);
+ return createEvent(type, chart, pos.x, pos.y, event);
+ }
- if (me.options.gridLines.offsetGridLines && includeOffset) {
- heightOffset += (valueHeight / 2);
- }
+ function createResizer(handler) {
+ var iframe = document.createElement('iframe');
+ iframe.className = 'chartjs-hidden-iframe';
+ iframe.style.cssText =
+ 'display:block;'+
+ 'overflow:hidden;'+
+ 'border:0;'+
+ 'margin:0;'+
+ 'top:0;'+
+ 'left:0;'+
+ 'bottom:0;'+
+ 'right:0;'+
+ 'height:100%;'+
+ 'width:100%;'+
+ 'position:absolute;'+
+ 'pointer-events:none;'+
+ 'z-index:-1;';
- return me.top + Math.round(heightOffset);
- }
- },
- getPixelForTick: function(index, includeOffset) {
- return this.getPixelForValue(this.ticks[index], index + this.minIndex, null, includeOffset);
- },
- getValueForPixel: function(pixel) {
- var me = this;
- var value;
- var offsetAmt = Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- var horz = me.isHorizontal();
- var innerDimension = horz ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
- var valueDimension = innerDimension / offsetAmt;
+ // Prevent the iframe to gain focus on tab.
+ // https://github.com/chartjs/Chart.js/issues/3090
+ iframe.tabIndex = -1;
- pixel -= horz ? me.left : me.top;
+ // If the iframe is re-attached to the DOM, the resize listener is removed because the
+ // content is reloaded, so make sure to install the handler after the iframe is loaded.
+ // https://github.com/chartjs/Chart.js/issues/3521
+ helpers.addEvent(iframe, 'load', function() {
+ helpers.addEvent(iframe.contentWindow || iframe, 'resize', handler);
- if (me.options.gridLines.offsetGridLines) {
- pixel -= (valueDimension / 2);
- }
- pixel -= horz ? me.paddingLeft : me.paddingTop;
+ // The iframe size might have changed while loading, which can also
+ // happen if the size has been changed while detached from the DOM.
+ handler();
+ });
- if (pixel <= 0) {
- value = 0;
- } else {
- value = Math.round(pixel / valueDimension);
- }
+ return iframe;
+ }
- return value;
- },
- getBasePixel: function() {
- return this.bottom;
- }
- });
+ function addResizeListener(node, listener, chart) {
+ var stub = node._chartjs = {
+ ticking: false
+ };
- Chart.scaleService.registerScaleType("category", DatasetScale, defaultConfig);
+ // Throttle the callback notification until the next animation frame.
+ var notify = function() {
+ if (!stub.ticking) {
+ stub.ticking = true;
+ helpers.requestAnimFrame.call(window, function() {
+ if (stub.resizer) {
+ stub.ticking = false;
+ return listener(createEvent('resize', chart));
+ }
+ });
+ }
+ };
-};
+ // Let's keep track of this added iframe and thus avoid DOM query when removing it.
+ stub.resizer = createResizer(notify);
+
+ node.insertBefore(stub.resizer, node.firstChild);
+ }
+
+ function removeResizeListener(node) {
+ if (!node || !node._chartjs) {
+ return;
+ }
+
+ var resizer = node._chartjs.resizer;
+ if (resizer) {
+ resizer.parentNode.removeChild(resizer);
+ node._chartjs.resizer = null;
+ }
+
+ delete node._chartjs;
+ }
+
+ return {
+ acquireContext: function(item, config) {
+ if (typeof item === 'string') {
+ item = document.getElementById(item);
+ } else if (item.length) {
+ // Support for array based queries (such as jQuery)
+ item = item[0];
+ }
+
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ // To prevent canvas fingerprinting, some add-ons undefine the getContext
+ // method, for example: https://github.com/kkapsner/CanvasBlocker
+ // https://github.com/chartjs/Chart.js/issues/2807
+ var context = item && item.getContext && item.getContext('2d');
+
+ // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
+ // inside an iframe or when running in a protected environment. We could guess the
+ // types from their toString() value but let's keep things flexible and assume it's
+ // a sufficient condition if the item has a context2D which has item as `canvas`.
+ // https://github.com/chartjs/Chart.js/issues/3887
+ // https://github.com/chartjs/Chart.js/issues/4102
+ // https://github.com/chartjs/Chart.js/issues/4152
+ if (context && context.canvas === item) {
+ initCanvas(item, config);
+ return context;
+ }
+
+ return null;
+ },
+
+ releaseContext: function(context) {
+ var canvas = context.canvas;
+ if (!canvas._chartjs) {
+ return;
+ }
+
+ var initial = canvas._chartjs.initial;
+ ['height', 'width'].forEach(function(prop) {
+ var value = initial[prop];
+ if (value === undefined || value === null) {
+ canvas.removeAttribute(prop);
+ } else {
+ canvas.setAttribute(prop, value);
+ }
+ });
+
+ helpers.each(initial.style || {}, function(value, key) {
+ canvas.style[key] = value;
+ });
+
+ // The canvas render size might have been changed (and thus the state stack discarded),
+ // we can't use save() and restore() to restore the initial state. So make sure that at
+ // least the canvas context is reset to the default state by setting the canvas width.
+ // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
+ canvas.width = canvas.width;
+
+ delete canvas._chartjs;
+ },
+
+ addEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ addResizeListener(canvas.parentNode, listener, chart);
+ return;
+ }
+
+ var stub = listener._chartjs || (listener._chartjs = {});
+ var proxies = stub.proxies || (stub.proxies = {});
+ var proxy = proxies[chart.id + '_' + type] = function(event) {
+ listener(fromNativeEvent(event, chart));
+ };
+
+ helpers.addEvent(canvas, type, proxy);
+ },
+
+ removeEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ removeResizeListener(canvas.parentNode, listener);
+ return;
+ }
+
+ var stub = listener._chartjs || {};
+ var proxies = stub.proxies || {};
+ var proxy = proxies[chart.id + '_' + type];
+ if (!proxy) {
+ return;
+ }
+
+ helpers.removeEvent(canvas, type, proxy);
+ }
+ };
+ };
+
},{}],40:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+// By default, select the browser (DOM) platform.
+// @TODO Make possible to select another platform at build time.
+ var implementation = require(39);
- var helpers = Chart.helpers;
+ module.exports = function(Chart) {
+ /**
+ * @namespace Chart.platform
+ * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
+ * @since 2.4.0
+ */
+ Chart.platform = {
+ /**
+ * Called at chart construction time, returns a context2d instance implementing
+ * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
+ * @param {*} item - The native item from which to acquire context (platform specific)
+ * @param {Object} options - The chart options
+ * @returns {CanvasRenderingContext2D} context2d instance
+ */
+ acquireContext: function() {},
- var defaultConfig = {
- position: "left",
- ticks: {
- callback: function(tickValue, index, ticks) {
- // If we have lots of ticks, don't use the ones
- var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
+ /**
+ * Called at chart destruction time, releases any resources associated to the context
+ * previously returned by the acquireContext() method.
+ * @param {CanvasRenderingContext2D} context - The context2d instance
+ * @returns {Boolean} true if the method succeeded, else false
+ */
+ releaseContext: function() {},
- // If we have a number like 2.5 as the delta, figure out how many decimal places we need
- if (Math.abs(delta) > 1) {
- if (tickValue !== Math.floor(tickValue)) {
- // not an integer
- delta = tickValue - Math.floor(tickValue);
- }
- }
+ /**
+ * Registers the specified listener on the given chart.
+ * @param {Chart} chart - Chart from which to listen for event
+ * @param {String} type - The ({@link IEvent}) type to listen for
+ * @param {Function} listener - Receives a notification (an object that implements
+ * the {@link IEvent} interface) when an event of the specified type occurs.
+ */
+ addEventListener: function() {},
- var logDelta = helpers.log10(Math.abs(delta));
- var tickString = '';
+ /**
+ * Removes the specified listener previously registered with addEventListener.
+ * @param {Chart} chart -Chart from which to remove the listener
+ * @param {String} type - The ({@link IEvent}) type to remove
+ * @param {Function} listener - The listener function to remove from the event target.
+ */
+ removeEventListener: function() {}
+ };
- if (tickValue !== 0) {
- var numDecimal = -1 * Math.floor(logDelta);
- numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
- tickString = tickValue.toFixed(numDecimal);
- } else {
- tickString = '0'; // never show decimal places for 0
- }
+ /**
+ * @interface IPlatform
+ * Allows abstracting platform dependencies away from the chart
+ * @borrows Chart.platform.acquireContext as acquireContext
+ * @borrows Chart.platform.releaseContext as releaseContext
+ * @borrows Chart.platform.addEventListener as addEventListener
+ * @borrows Chart.platform.removeEventListener as removeEventListener
+ */
- return tickString;
- }
- }
- };
+ /**
+ * @interface IEvent
+ * @prop {String} type - The event type name, possible values are:
+ * 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout',
+ * 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize'
+ * @prop {*} native - The original native event (null for emulated events, e.g. 'resize')
+ * @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events)
+ * @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events)
+ */
- var LinearScale = Chart.LinearScaleBase.extend({
- determineDataLimits: function() {
- var me = this;
- var opts = me.options;
- var chart = me.chart;
- var data = chart.data;
- var datasets = data.datasets;
- var isHorizontal = me.isHorizontal();
+ Chart.helpers.extend(Chart.platform, implementation(Chart));
+ };
- function IDMatches(meta) {
- return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
- }
+},{"39":39}],41:[function(require,module,exports){
+ 'use strict';
- // First Calculate the range
- me.min = null;
- me.max = null;
+ module.exports = function(Chart) {
+ /**
+ * Plugin based on discussion from the following Chart.js issues:
+ * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569
+ * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897
+ */
+ Chart.defaults.global.plugins.filler = {
+ propagate: true
+ };
- if (opts.stacked) {
- var valuesPerType = {};
- var hasPositiveValues = false;
- var hasNegativeValues = false;
+ var defaults = Chart.defaults;
+ var helpers = Chart.helpers;
+ var mappers = {
+ dataset: function(source) {
+ var index = source.fill;
+ var chart = source.chart;
+ var meta = chart.getDatasetMeta(index);
+ var visible = meta && chart.isDatasetVisible(index);
+ var points = (visible && meta.dataset._children) || [];
- helpers.each(datasets, function(dataset, datasetIndex) {
- var meta = chart.getDatasetMeta(datasetIndex);
- if (valuesPerType[meta.type] === undefined) {
- valuesPerType[meta.type] = {
- positiveValues: [],
- negativeValues: []
- };
- }
+ return !points.length? null : function(point, i) {
+ return points[i]._view || null;
+ };
+ },
- // Store these per type
- var positiveValues = valuesPerType[meta.type].positiveValues;
- var negativeValues = valuesPerType[meta.type].negativeValues;
+ boundary: function(source) {
+ var boundary = source.boundary;
+ var x = boundary? boundary.x : null;
+ var y = boundary? boundary.y : null;
- if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
- helpers.each(dataset.data, function(rawValue, index) {
- var value = +me.getRightValue(rawValue);
- if (isNaN(value) || meta.data[index].hidden) {
- return;
- }
+ return function(point) {
+ return {
+ x: x === null? point.x : x,
+ y: y === null? point.y : y,
+ };
+ };
+ }
+ };
- positiveValues[index] = positiveValues[index] || 0;
- negativeValues[index] = negativeValues[index] || 0;
+ // @todo if (fill[0] === '#')
+ function decodeFill(el, index, count) {
+ var model = el._model || {};
+ var fill = model.fill;
+ var target;
- if (opts.relativePoints) {
- positiveValues[index] = 100;
- } else {
- if (value < 0) {
- hasNegativeValues = true;
- negativeValues[index] += value;
- } else {
- hasPositiveValues = true;
- positiveValues[index] += value;
- }
- }
- });
- }
- });
+ if (fill === undefined) {
+ fill = !!model.backgroundColor;
+ }
- helpers.each(valuesPerType, function(valuesForType) {
- var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
- var minVal = helpers.min(values);
- var maxVal = helpers.max(values);
- me.min = me.min === null ? minVal : Math.min(me.min, minVal);
- me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
- });
+ if (fill === false || fill === null) {
+ return false;
+ }
- } else {
- helpers.each(datasets, function(dataset, datasetIndex) {
- var meta = chart.getDatasetMeta(datasetIndex);
- if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
- helpers.each(dataset.data, function(rawValue, index) {
- var value = +me.getRightValue(rawValue);
- if (isNaN(value) || meta.data[index].hidden) {
- return;
- }
+ if (fill === true) {
+ return 'origin';
+ }
- if (me.min === null) {
- me.min = value;
- } else if (value < me.min) {
- me.min = value;
- }
+ target = parseFloat(fill, 10);
+ if (isFinite(target) && Math.floor(target) === target) {
+ if (fill[0] === '-' || fill[0] === '+') {
+ target = index + target;
+ }
- if (me.max === null) {
- me.max = value;
- } else if (value > me.max) {
- me.max = value;
- }
- });
- }
- });
- }
+ if (target === index || target < 0 || target >= count) {
+ return false;
+ }
- // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
- this.handleTickRangeOptions();
- },
- getTickLimit: function() {
- var maxTicks;
- var me = this;
- var tickOpts = me.options.ticks;
+ return target;
+ }
- if (me.isHorizontal()) {
- maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
- } else {
- // The factor of 2 used to scale the font size has been experimentally determined.
- var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, Chart.defaults.global.defaultFontSize);
- maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
- }
+ switch (fill) {
+ // compatibility
+ case 'bottom':
+ return 'start';
+ case 'top':
+ return 'end';
+ case 'zero':
+ return 'origin';
+ // supported boundaries
+ case 'origin':
+ case 'start':
+ case 'end':
+ return fill;
+ // invalid fill values
+ default:
+ return false;
+ }
+ }
- return maxTicks;
- },
- // Called after the ticks are built. We need
- handleDirectionalChanges: function() {
- if (!this.isHorizontal()) {
- // We are in a vertical orientation. The top value is the highest. So reverse the array
- this.ticks.reverse();
- }
- },
- getLabelForIndex: function(index, datasetIndex) {
- return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
- },
- // Utils
- getPixelForValue: function(value) {
- // This must be called after fit has been run so that
- // this.left, this.top, this.right, and this.bottom have been defined
- var me = this;
- var paddingLeft = me.paddingLeft;
- var paddingBottom = me.paddingBottom;
- var start = me.start;
+ function computeBoundary(source) {
+ var model = source.el._model || {};
+ var scale = source.el._scale || {};
+ var fill = source.fill;
+ var target = null;
+ var horizontal;
- var rightValue = +me.getRightValue(value);
- var pixel;
- var innerDimension;
- var range = me.end - start;
+ if (isFinite(fill)) {
+ return null;
+ }
- if (me.isHorizontal()) {
- innerDimension = me.width - (paddingLeft + me.paddingRight);
- pixel = me.left + (innerDimension / range * (rightValue - start));
- return Math.round(pixel + paddingLeft);
- } else {
- innerDimension = me.height - (me.paddingTop + paddingBottom);
- pixel = (me.bottom - paddingBottom) - (innerDimension / range * (rightValue - start));
- return Math.round(pixel);
- }
- },
- getValueForPixel: function(pixel) {
- var me = this;
- var isHorizontal = me.isHorizontal();
- var paddingLeft = me.paddingLeft;
- var paddingBottom = me.paddingBottom;
- var innerDimension = isHorizontal ? me.width - (paddingLeft + me.paddingRight) : me.height - (me.paddingTop + paddingBottom);
- var offset = (isHorizontal ? pixel - me.left - paddingLeft : me.bottom - paddingBottom - pixel) / innerDimension;
- return me.start + ((me.end - me.start) * offset);
- },
- getPixelForTick: function(index) {
- return this.getPixelForValue(this.ticksAsNumbers[index]);
- }
- });
- Chart.scaleService.registerScaleType("linear", LinearScale, defaultConfig);
+ // Backward compatibility: until v3, we still need to support boundary values set on
+ // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
+ // controllers might still use it (e.g. the Smith chart).
-};
-},{}],41:[function(require,module,exports){
-"use strict";
+ if (fill === 'start') {
+ target = model.scaleBottom === undefined? scale.bottom : model.scaleBottom;
+ } else if (fill === 'end') {
+ target = model.scaleTop === undefined? scale.top : model.scaleTop;
+ } else if (model.scaleZero !== undefined) {
+ target = model.scaleZero;
+ } else if (scale.getBasePosition) {
+ target = scale.getBasePosition();
+ } else if (scale.getBasePixel) {
+ target = scale.getBasePixel();
+ }
-module.exports = function(Chart) {
+ if (target !== undefined && target !== null) {
+ if (target.x !== undefined && target.y !== undefined) {
+ return target;
+ }
- var helpers = Chart.helpers,
- noop = helpers.noop;
+ if (typeof target === 'number' && isFinite(target)) {
+ horizontal = scale.isHorizontal();
+ return {
+ x: horizontal? target : null,
+ y: horizontal? null : target
+ };
+ }
+ }
- Chart.LinearScaleBase = Chart.Scale.extend({
- handleTickRangeOptions: function() {
- var me = this;
- var opts = me.options;
- var tickOpts = opts.ticks;
+ return null;
+ }
- // If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
- // do nothing since that would make the chart weird. If the user really wants a weird chart
- // axis, they can manually override it
- if (tickOpts.beginAtZero) {
- var minSign = helpers.sign(me.min);
- var maxSign = helpers.sign(me.max);
+ function resolveTarget(sources, index, propagate) {
+ var source = sources[index];
+ var fill = source.fill;
+ var visited = [index];
+ var target;
- if (minSign < 0 && maxSign < 0) {
- // move the top up to 0
- me.max = 0;
- } else if (minSign > 0 && maxSign > 0) {
- // move the botttom down to 0
- me.min = 0;
- }
- }
+ if (!propagate) {
+ return fill;
+ }
- if (tickOpts.min !== undefined) {
- me.min = tickOpts.min;
- } else if (tickOpts.suggestedMin !== undefined) {
- me.min = Math.min(me.min, tickOpts.suggestedMin);
- }
+ while (fill !== false && visited.indexOf(fill) === -1) {
+ if (!isFinite(fill)) {
+ return fill;
+ }
- if (tickOpts.max !== undefined) {
- me.max = tickOpts.max;
- } else if (tickOpts.suggestedMax !== undefined) {
- me.max = Math.max(me.max, tickOpts.suggestedMax);
- }
+ target = sources[fill];
+ if (!target) {
+ return false;
+ }
- if (me.min === me.max) {
- me.max++;
+ if (target.visible) {
+ return fill;
+ }
- if (!tickOpts.beginAtZero) {
- me.min--;
- }
- }
- },
- getTickLimit: noop,
- handleDirectionalChanges: noop,
+ visited.push(fill);
+ fill = target.fill;
+ }
- buildTicks: function() {
- var me = this;
- var opts = me.options;
- var ticks = me.ticks = [];
- var tickOpts = opts.ticks;
- var getValueOrDefault = helpers.getValueOrDefault;
+ return false;
+ }
- // Figure out what the max number of ticks we can support it is based on the size of
- // the axis area. For now, we say that the minimum tick spacing in pixels must be 50
- // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
- // the graph
+ function createMapper(source) {
+ var fill = source.fill;
+ var type = 'dataset';
- var maxTicks = me.getTickLimit();
+ if (fill === false) {
+ return null;
+ }
- // Make sure we always have at least 2 ticks
- maxTicks = Math.max(2, maxTicks);
+ if (!isFinite(fill)) {
+ type = 'boundary';
+ }
- // To get a "nice" value for the tick spacing, we will use the appropriately named
- // "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
- // for details.
+ return mappers[type](source);
+ }
- var spacing;
- var fixedStepSizeSet = (tickOpts.fixedStepSize && tickOpts.fixedStepSize > 0) || (tickOpts.stepSize && tickOpts.stepSize > 0);
- if (fixedStepSizeSet) {
- spacing = getValueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize);
- } else {
- var niceRange = helpers.niceNum(me.max - me.min, false);
- spacing = helpers.niceNum(niceRange / (maxTicks - 1), true);
- }
- var niceMin = Math.floor(me.min / spacing) * spacing;
- var niceMax = Math.ceil(me.max / spacing) * spacing;
- var numSpaces = (niceMax - niceMin) / spacing;
+ function isDrawable(point) {
+ return point && !point.skip;
+ }
- // If very close to our rounded value, use it.
- if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
- numSpaces = Math.round(numSpaces);
- } else {
- numSpaces = Math.ceil(numSpaces);
- }
+ function drawArea(ctx, curve0, curve1, len0, len1) {
+ var i;
- // Put the values into the ticks array
- ticks.push(tickOpts.min !== undefined ? tickOpts.min : niceMin);
- for (var j = 1; j < numSpaces; ++j) {
- ticks.push(niceMin + (j * spacing));
- }
- ticks.push(tickOpts.max !== undefined ? tickOpts.max : niceMax);
+ if (!len0 || !len1) {
+ return;
+ }
- me.handleDirectionalChanges();
+ // building first area curve (normal)
+ ctx.moveTo(curve0[0].x, curve0[0].y);
+ for (i=1; i<len0; ++i) {
+ helpers.canvas.lineTo(ctx, curve0[i-1], curve0[i]);
+ }
- // At this point, we need to update our max and min given the tick values since we have expanded the
- // range of the scale
- me.max = helpers.max(ticks);
- me.min = helpers.min(ticks);
+ // joining the two area curves
+ ctx.lineTo(curve1[len1-1].x, curve1[len1-1].y);
- if (tickOpts.reverse) {
- ticks.reverse();
+ // building opposite area curve (reverse)
+ for (i=len1-1; i>0; --i) {
+ helpers.canvas.lineTo(ctx, curve1[i], curve1[i-1], true);
+ }
+ }
- me.start = me.max;
- me.end = me.min;
- } else {
- me.start = me.min;
- me.end = me.max;
- }
- },
- convertTicksToLabels: function() {
- var me = this;
- me.ticksAsNumbers = me.ticks.slice();
- me.zeroLineIndex = me.ticks.indexOf(0);
+ function doFill(ctx, points, mapper, view, color, loop) {
+ var count = points.length;
+ var span = view.spanGaps;
+ var curve0 = [];
+ var curve1 = [];
+ var len0 = 0;
+ var len1 = 0;
+ var i, ilen, index, p0, p1, d0, d1;
- Chart.Scale.prototype.convertTicksToLabels.call(me);
- },
- });
-};
+ ctx.beginPath();
+
+ for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
+ index = i%count;
+ p0 = points[index]._view;
+ p1 = mapper(p0, index, view);
+ d0 = isDrawable(p0);
+ d1 = isDrawable(p1);
+
+ if (d0 && d1) {
+ len0 = curve0.push(p0);
+ len1 = curve1.push(p1);
+ } else if (len0 && len1) {
+ if (!span) {
+ drawArea(ctx, curve0, curve1, len0, len1);
+ len0 = len1 = 0;
+ curve0 = [];
+ curve1 = [];
+ } else {
+ if (d0) {
+ curve0.push(p0);
+ }
+ if (d1) {
+ curve1.push(p1);
+ }
+ }
+ }
+ }
+
+ drawArea(ctx, curve0, curve1, len0, len1);
+
+ ctx.closePath();
+ ctx.fillStyle = color;
+ ctx.fill();
+ }
+
+ return {
+ id: 'filler',
+
+ afterDatasetsUpdate: function(chart, options) {
+ var count = (chart.data.datasets || []).length;
+ var propagate = options.propagate;
+ var sources = [];
+ var meta, i, el, source;
+
+ for (i = 0; i < count; ++i) {
+ meta = chart.getDatasetMeta(i);
+ el = meta.dataset;
+ source = null;
+
+ if (el && el._model && el instanceof Chart.elements.Line) {
+ source = {
+ visible: chart.isDatasetVisible(i),
+ fill: decodeFill(el, i, count),
+ chart: chart,
+ el: el
+ };
+ }
+
+ meta.$filler = source;
+ sources.push(source);
+ }
+
+ for (i=0; i<count; ++i) {
+ source = sources[i];
+ if (!source) {
+ continue;
+ }
+
+ source.fill = resolveTarget(sources, i, propagate);
+ source.boundary = computeBoundary(source);
+ source.mapper = createMapper(source);
+ }
+ },
+
+ beforeDatasetDraw: function(chart, args) {
+ var meta = args.meta.$filler;
+ if (!meta) {
+ return;
+ }
+
+ var el = meta.el;
+ var view = el._view;
+ var points = el._children || [];
+ var mapper = meta.mapper;
+ var color = view.backgroundColor || defaults.global.defaultColor;
+
+ if (mapper && color && points.length) {
+ doFill(chart.ctx, points, mapper, view, color, el._loop);
+ }
+ }
+ };
+ };
+
},{}],42:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
+ var helpers = Chart.helpers;
+ var layout = Chart.layoutService;
+ var noop = helpers.noop;
- var defaultConfig = {
- position: "left",
+ Chart.defaults.global.legend = {
+ display: true,
+ position: 'top',
+ fullWidth: true,
+ reverse: false,
+ weight: 1000,
- // label settings
- ticks: {
- callback: function(value, index, arr) {
- var remain = value / (Math.pow(10, Math.floor(helpers.log10(value))));
+ // a callback that will handle
+ onClick: function(e, legendItem) {
+ var index = legendItem.datasetIndex;
+ var ci = this.chart;
+ var meta = ci.getDatasetMeta(index);
- if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === arr.length - 1) {
- return value.toExponential();
- } else {
- return '';
- }
- }
- }
- };
+ // See controller.isDatasetVisible comment
+ meta.hidden = meta.hidden === null? !ci.data.datasets[index].hidden : null;
- var LogarithmicScale = Chart.Scale.extend({
- determineDataLimits: function() {
- var me = this;
- var opts = me.options;
- var tickOpts = opts.ticks;
- var chart = me.chart;
- var data = chart.data;
- var datasets = data.datasets;
- var getValueOrDefault = helpers.getValueOrDefault;
- var isHorizontal = me.isHorizontal();
- function IDMatches(meta) {
- return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
- }
+ // We hid a dataset ... rerender the chart
+ ci.update();
+ },
- // Calculate Range
- me.min = null;
- me.max = null;
+ onHover: null,
- if (opts.stacked) {
- var valuesPerType = {};
+ labels: {
+ boxWidth: 40,
+ padding: 10,
+ // Generates labels shown in the legend
+ // Valid properties to return:
+ // text : text to display
+ // fillStyle : fill of coloured box
+ // strokeStyle: stroke of coloured box
+ // hidden : if this legend item refers to a hidden item
+ // lineCap : cap style for line
+ // lineDash
+ // lineDashOffset :
+ // lineJoin :
+ // lineWidth :
+ generateLabels: function(chart) {
+ var data = chart.data;
+ return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
+ return {
+ text: dataset.label,
+ fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
+ hidden: !chart.isDatasetVisible(i),
+ lineCap: dataset.borderCapStyle,
+ lineDash: dataset.borderDash,
+ lineDashOffset: dataset.borderDashOffset,
+ lineJoin: dataset.borderJoinStyle,
+ lineWidth: dataset.borderWidth,
+ strokeStyle: dataset.borderColor,
+ pointStyle: dataset.pointStyle,
- helpers.each(datasets, function(dataset, datasetIndex) {
- var meta = chart.getDatasetMeta(datasetIndex);
- if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
- if (valuesPerType[meta.type] === undefined) {
- valuesPerType[meta.type] = [];
- }
+ // Below is extra data used for toggling the datasets
+ datasetIndex: i
+ };
+ }, this) : [];
+ }
+ }
+ };
- helpers.each(dataset.data, function(rawValue, index) {
- var values = valuesPerType[meta.type];
- var value = +me.getRightValue(rawValue);
- if (isNaN(value) || meta.data[index].hidden) {
- return;
- }
+ /**
+ * Helper function to get the box width based on the usePointStyle option
+ * @param labelopts {Object} the label options on the legend
+ * @param fontSize {Number} the label font size
+ * @return {Number} width of the color box area
+ */
+ function getBoxWidth(labelOpts, fontSize) {
+ return labelOpts.usePointStyle ?
+ fontSize * Math.SQRT2 :
+ labelOpts.boxWidth;
+ }
- values[index] = values[index] || 0;
+ Chart.Legend = Chart.Element.extend({
- if (opts.relativePoints) {
- values[index] = 100;
- } else {
- // Don't need to split positive and negative since the log scale can't handle a 0 crossing
- values[index] += value;
- }
- });
- }
- });
+ initialize: function(config) {
+ helpers.extend(this, config);
- helpers.each(valuesPerType, function(valuesForType) {
- var minVal = helpers.min(valuesForType);
- var maxVal = helpers.max(valuesForType);
- me.min = me.min === null ? minVal : Math.min(me.min, minVal);
- me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
- });
+ // Contains hit boxes for each dataset (in dataset order)
+ this.legendHitBoxes = [];
- } else {
- helpers.each(datasets, function(dataset, datasetIndex) {
- var meta = chart.getDatasetMeta(datasetIndex);
- if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
- helpers.each(dataset.data, function(rawValue, index) {
- var value = +me.getRightValue(rawValue);
- if (isNaN(value) || meta.data[index].hidden) {
- return;
- }
+ // Are we in doughnut mode which has a different data type
+ this.doughnutMode = false;
+ },
- if (me.min === null) {
- me.min = value;
- } else if (value < me.min) {
- me.min = value;
- }
+ // These methods are ordered by lifecycle. Utilities then follow.
+ // Any function defined here is inherited by all legend types.
+ // Any function can be extended by the legend type
- if (me.max === null) {
- me.max = value;
- } else if (value > me.max) {
- me.max = value;
- }
- });
- }
- });
- }
+ beforeUpdate: noop,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
- me.min = getValueOrDefault(tickOpts.min, me.min);
- me.max = getValueOrDefault(tickOpts.max, me.max);
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
- if (me.min === me.max) {
- if (me.min !== 0 && me.min !== null) {
- me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
- me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
- } else {
- me.min = 1;
- me.max = 10;
- }
- }
- },
- buildTicks: function() {
- var me = this;
- var opts = me.options;
- var tickOpts = opts.ticks;
- var getValueOrDefault = helpers.getValueOrDefault;
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
- // Reset the ticks array. Later on, we will draw a grid line at these positions
- // The array simply contains the numerical value of the spots where ticks will be
- var ticks = me.ticks = [];
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
- // Figure out what the max number of ticks we can support it is based on the size of
- // the axis area. For now, we say that the minimum tick spacing in pixels must be 50
- // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
- // the graph
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
- var tickVal = getValueOrDefault(tickOpts.min, Math.pow(10, Math.floor(helpers.log10(me.min))));
+ return me.minSize;
+ },
+ afterUpdate: noop,
- while (tickVal < me.max) {
- ticks.push(tickVal);
+ //
- var exp = Math.floor(helpers.log10(tickVal));
- var significand = Math.floor(tickVal / Math.pow(10, exp)) + 1;
+ beforeSetDimensions: noop,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
- if (significand === 10) {
- significand = 1;
- ++exp;
- }
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
- tickVal = significand * Math.pow(10, exp);
- }
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
- var lastTick = getValueOrDefault(tickOpts.max, tickVal);
- ticks.push(lastTick);
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop,
- if (!me.isHorizontal()) {
- // We are in a vertical orientation. The top value is the highest. So reverse the array
- ticks.reverse();
- }
+ //
- // At this point, we need to update our max and min given the tick values since we have expanded the
- // range of the scale
- me.max = helpers.max(ticks);
- me.min = helpers.min(ticks);
+ beforeBuildLabels: noop,
+ buildLabels: function() {
+ var me = this;
+ var labelOpts = me.options.labels;
+ var legendItems = labelOpts.generateLabels.call(me, me.chart);
- if (tickOpts.reverse) {
- ticks.reverse();
+ if (labelOpts.filter) {
+ legendItems = legendItems.filter(function(item) {
+ return labelOpts.filter(item, me.chart.data);
+ });
+ }
- me.start = me.max;
- me.end = me.min;
- } else {
- me.start = me.min;
- me.end = me.max;
- }
- },
- convertTicksToLabels: function() {
- this.tickValues = this.ticks.slice();
+ if (me.options.reverse) {
+ legendItems.reverse();
+ }
- Chart.Scale.prototype.convertTicksToLabels.call(this);
- },
- // Get the correct tooltip label
- getLabelForIndex: function(index, datasetIndex) {
- return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
- },
- getPixelForTick: function(index) {
- return this.getPixelForValue(this.tickValues[index]);
- },
- getPixelForValue: function(value) {
- var me = this;
- var innerDimension;
- var pixel;
+ me.legendItems = legendItems;
+ },
+ afterBuildLabels: noop,
- var start = me.start;
- var newVal = +me.getRightValue(value);
- var range = helpers.log10(me.end) - helpers.log10(start);
- var paddingTop = me.paddingTop;
- var paddingBottom = me.paddingBottom;
- var paddingLeft = me.paddingLeft;
+ //
- if (me.isHorizontal()) {
+ beforeFit: noop,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var display = opts.display;
- if (newVal === 0) {
- pixel = me.left + paddingLeft;
- } else {
- innerDimension = me.width - (paddingLeft + me.paddingRight);
- pixel = me.left + (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
- pixel += paddingLeft;
- }
- } else {
- // Bottom - top since pixels increase downard on a screen
- if (newVal === 0) {
- pixel = me.top + paddingTop;
- } else {
- innerDimension = me.height - (paddingTop + paddingBottom);
- pixel = (me.bottom - paddingBottom) - (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
- }
- }
+ var ctx = me.ctx;
- return pixel;
- },
- getValueForPixel: function(pixel) {
- var me = this;
- var range = helpers.log10(me.end) - helpers.log10(me.start);
- var value, innerDimension;
+ var globalDefault = Chart.defaults.global,
+ itemOrDefault = helpers.getValueOrDefault,
+ fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
+ fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
+ fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
+ labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
- if (me.isHorizontal()) {
- innerDimension = me.width - (me.paddingLeft + me.paddingRight);
- value = me.start * Math.pow(10, (pixel - me.left - me.paddingLeft) * range / innerDimension);
- } else {
- innerDimension = me.height - (me.paddingTop + me.paddingBottom);
- value = Math.pow(10, (me.bottom - me.paddingBottom - pixel) * range / innerDimension) / me.start;
- }
+ // Reset hit boxes
+ var hitboxes = me.legendHitBoxes = [];
- return value;
- }
- });
- Chart.scaleService.registerScaleType("logarithmic", LogarithmicScale, defaultConfig);
+ var minSize = me.minSize;
+ var isHorizontal = me.isHorizontal();
-};
+ if (isHorizontal) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = display ? 10 : 0;
+ } else {
+ minSize.width = display ? 10 : 0;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Increase sizes here
+ if (display) {
+ ctx.font = labelFont;
+
+ if (isHorizontal) {
+ // Labels
+
+ // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
+ var lineWidths = me.lineWidths = [0];
+ var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
+
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'top';
+
+ helpers.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
+ totalHeight += fontSize + (labelOpts.padding);
+ lineWidths[lineWidths.length] = me.left;
+ }
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: width,
+ height: fontSize
+ };
+
+ lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
+ });
+
+ minSize.height += totalHeight;
+
+ } else {
+ var vPadding = labelOpts.padding;
+ var columnWidths = me.columnWidths = [];
+ var totalWidth = labelOpts.padding;
+ var currentColWidth = 0;
+ var currentColHeight = 0;
+ var itemHeight = fontSize + vPadding;
+
+ helpers.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ // If too tall, go to new column
+ if (currentColHeight + itemHeight > minSize.height) {
+ totalWidth += currentColWidth + labelOpts.padding;
+ columnWidths.push(currentColWidth); // previous column width
+
+ currentColWidth = 0;
+ currentColHeight = 0;
+ }
+
+ // Get max width
+ currentColWidth = Math.max(currentColWidth, itemWidth);
+ currentColHeight += itemHeight;
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: itemWidth,
+ height: fontSize
+ };
+ });
+
+ totalWidth += currentColWidth;
+ columnWidths.push(currentColWidth);
+ minSize.width += totalWidth;
+ }
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+ afterFit: noop,
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+
+ // Actually draw the legend on the canvas
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var globalDefault = Chart.defaults.global,
+ lineDefault = globalDefault.elements.line,
+ legendWidth = me.width,
+ lineWidths = me.lineWidths;
+
+ if (opts.display) {
+ var ctx = me.ctx,
+ cursor,
+ itemOrDefault = helpers.getValueOrDefault,
+ fontColor = itemOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor),
+ fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
+ fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
+ fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
+ labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
+
+ // Canvas setup
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'top';
+ ctx.lineWidth = 0.5;
+ ctx.strokeStyle = fontColor; // for strikethrough effect
+ ctx.fillStyle = fontColor; // render in correct colour
+ ctx.font = labelFont;
+
+ var boxWidth = getBoxWidth(labelOpts, fontSize),
+ hitboxes = me.legendHitBoxes;
+
+ // current position
+ var drawLegendBox = function(x, y, legendItem) {
+ if (isNaN(boxWidth) || boxWidth <= 0) {
+ return;
+ }
+
+ // Set the ctx for the box
+ ctx.save();
+
+ ctx.fillStyle = itemOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
+ ctx.lineCap = itemOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
+ ctx.lineDashOffset = itemOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
+ ctx.lineJoin = itemOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
+ ctx.lineWidth = itemOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
+ ctx.strokeStyle = itemOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
+ var isLineWidthZero = (itemOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0);
+
+ if (ctx.setLineDash) {
+ // IE 9 and 10 do not support line dash
+ ctx.setLineDash(itemOrDefault(legendItem.lineDash, lineDefault.borderDash));
+ }
+
+ if (opts.labels && opts.labels.usePointStyle) {
+ // Recalculate x and y for drawPoint() because its expecting
+ // x and y to be center of figure (instead of top left)
+ var radius = fontSize * Math.SQRT2 / 2;
+ var offSet = radius / Math.SQRT2;
+ var centerX = x + offSet;
+ var centerY = y + offSet;
+
+ // Draw pointStyle as legend symbol
+ Chart.canvasHelpers.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
+ } else {
+ // Draw box as legend symbol
+ if (!isLineWidthZero) {
+ ctx.strokeRect(x, y, boxWidth, fontSize);
+ }
+ ctx.fillRect(x, y, boxWidth, fontSize);
+ }
+
+ ctx.restore();
+ };
+ var fillText = function(x, y, legendItem, textWidth) {
+ ctx.fillText(legendItem.text, boxWidth + (fontSize / 2) + x, y);
+
+ if (legendItem.hidden) {
+ // Strikethrough the text if hidden
+ ctx.beginPath();
+ ctx.lineWidth = 2;
+ ctx.moveTo(boxWidth + (fontSize / 2) + x, y + (fontSize / 2));
+ ctx.lineTo(boxWidth + (fontSize / 2) + x + textWidth, y + (fontSize / 2));
+ ctx.stroke();
+ }
+ };
+
+ // Horizontal
+ var isHorizontal = me.isHorizontal();
+ if (isHorizontal) {
+ cursor = {
+ x: me.left + ((legendWidth - lineWidths[0]) / 2),
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ } else {
+ cursor = {
+ x: me.left + labelOpts.padding,
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ }
+
+ var itemHeight = fontSize + labelOpts.padding;
+ helpers.each(me.legendItems, function(legendItem, i) {
+ var textWidth = ctx.measureText(legendItem.text).width,
+ width = boxWidth + (fontSize / 2) + textWidth,
+ x = cursor.x,
+ y = cursor.y;
+
+ if (isHorizontal) {
+ if (x + width >= legendWidth) {
+ y = cursor.y += itemHeight;
+ cursor.line++;
+ x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
+ }
+ } else if (y + itemHeight > me.bottom) {
+ x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
+ y = cursor.y = me.top + labelOpts.padding;
+ cursor.line++;
+ }
+
+ drawLegendBox(x, y, legendItem);
+
+ hitboxes[i].left = x;
+ hitboxes[i].top = y;
+
+ // Fill the actual label
+ fillText(x, y, legendItem, textWidth);
+
+ if (isHorizontal) {
+ cursor.x += width + (labelOpts.padding);
+ } else {
+ cursor.y += itemHeight;
+ }
+
+ });
+ }
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ * @return {Boolean} true if a change occured
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var opts = me.options;
+ var type = e.type === 'mouseup' ? 'click' : e.type;
+ var changed = false;
+
+ if (type === 'mousemove') {
+ if (!opts.onHover) {
+ return;
+ }
+ } else if (type === 'click') {
+ if (!opts.onClick) {
+ return;
+ }
+ } else {
+ return;
+ }
+
+ // Chart event already has relative position in it
+ var x = e.x,
+ y = e.y;
+
+ if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
+ // See if we are touching one of the dataset boxes
+ var lh = me.legendHitBoxes;
+ for (var i = 0; i < lh.length; ++i) {
+ var hitBox = lh[i];
+
+ if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
+ // Touching an element
+ if (type === 'click') {
+ // use e.native for backwards compatibility
+ opts.onClick.call(me, e.native, me.legendItems[i]);
+ changed = true;
+ break;
+ } else if (type === 'mousemove') {
+ // use e.native for backwards compatibility
+ opts.onHover.call(me, e.native, me.legendItems[i]);
+ changed = true;
+ break;
+ }
+ }
+ }
+ }
+
+ return changed;
+ }
+ });
+
+ function createNewLegendAndAttach(chart, legendOpts) {
+ var legend = new Chart.Legend({
+ ctx: chart.ctx,
+ options: legendOpts,
+ chart: chart
+ });
+
+ layout.configure(chart, legend, legendOpts);
+ layout.addBox(chart, legend);
+ chart.legend = legend;
+ }
+
+ return {
+ id: 'legend',
+
+ beforeInit: function(chart) {
+ var legendOpts = chart.options.legend;
+
+ if (legendOpts) {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var legendOpts = chart.options.legend;
+ var legend = chart.legend;
+
+ if (legendOpts) {
+ legendOpts = helpers.configMerge(Chart.defaults.global.legend, legendOpts);
+
+ if (legend) {
+ layout.configure(chart, legend, legendOpts);
+ legend.options = legendOpts;
+ } else {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ } else if (legend) {
+ layout.removeBox(chart, legend);
+ delete chart.legend;
+ }
+ },
+
+ afterEvent: function(chart, e) {
+ var legend = chart.legend;
+ if (legend) {
+ legend.handleEvent(e);
+ }
+ }
+ };
+ };
+
},{}],43:[function(require,module,exports){
-"use strict";
+ 'use strict';
-module.exports = function(Chart) {
+ module.exports = function(Chart) {
- var helpers = Chart.helpers;
- var globalDefaults = Chart.defaults.global;
+ var helpers = Chart.helpers;
+ var layout = Chart.layoutService;
+ var noop = helpers.noop;
- var defaultConfig = {
- display: true,
+ Chart.defaults.global.title = {
+ display: false,
+ position: 'top',
+ fullWidth: true,
+ weight: 2000, // by default greater than legend (1000) to be above
+ fontStyle: 'bold',
+ padding: 10,
- //Boolean - Whether to animate scaling the chart from the centre
- animate: true,
- lineArc: false,
- position: "chartArea",
+ // actual title
+ text: ''
+ };
- angleLines: {
- display: true,
- color: "rgba(0, 0, 0, 0.1)",
- lineWidth: 1
- },
+ Chart.Title = Chart.Element.extend({
+ initialize: function(config) {
+ var me = this;
+ helpers.extend(me, config);
- // label settings
- ticks: {
- //Boolean - Show a backdrop to the scale label
- showLabelBackdrop: true,
+ // Contains hit boxes for each dataset (in dataset order)
+ me.legendHitBoxes = [];
+ },
- //String - The colour of the label backdrop
- backdropColor: "rgba(255,255,255,0.75)",
+ // These methods are ordered by lifecycle. Utilities then follow.
- //Number - The backdrop padding above & below the label in pixels
- backdropPaddingY: 2,
+ beforeUpdate: noop,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
- //Number - The backdrop padding to the side of the label in pixels
- backdropPaddingX: 2
- },
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
- pointLabels: {
- //Number - Point label font size in pixels
- fontSize: 10,
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
- //Function - Used to convert point labels
- callback: function(label) {
- return label;
- }
- }
- };
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
- var LinearRadialScale = Chart.LinearScaleBase.extend({
- getValueCount: function() {
- return this.chart.data.labels.length;
- },
- setDimensions: function() {
- var me = this;
- var opts = me.options;
- var tickOpts = opts.ticks;
- // Set the unconstrained dimension before label rotation
- me.width = me.maxWidth;
- me.height = me.maxHeight;
- me.xCenter = Math.round(me.width / 2);
- me.yCenter = Math.round(me.height / 2);
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
- var minSize = helpers.min([me.height, me.width]);
- var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
- me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
- },
- determineDataLimits: function() {
- var me = this;
- var chart = me.chart;
- me.min = null;
- me.max = null;
+ return me.minSize;
+ },
+ afterUpdate: noop,
- helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
- if (chart.isDatasetVisible(datasetIndex)) {
- var meta = chart.getDatasetMeta(datasetIndex);
+ //
- helpers.each(dataset.data, function(rawValue, index) {
- var value = +me.getRightValue(rawValue);
- if (isNaN(value) || meta.data[index].hidden) {
- return;
- }
+ beforeSetDimensions: noop,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
- if (me.min === null) {
- me.min = value;
- } else if (value < me.min) {
- me.min = value;
- }
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
- if (me.max === null) {
- me.max = value;
- } else if (value > me.max) {
- me.max = value;
- }
- });
- }
- });
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
- // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
- me.handleTickRangeOptions();
- },
- getTickLimit: function() {
- var tickOpts = this.options.ticks;
- var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
- return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
- },
- convertTicksToLabels: function() {
- var me = this;
- Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop,
- // Point labels
- me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
- },
- getLabelForIndex: function(index, datasetIndex) {
- return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
- },
- fit: function() {
- /*
- * Right, this is really confusing and there is a lot of maths going on here
- * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
- *
- * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
- *
- * Solution:
- *
- * We assume the radius of the polygon is half the size of the canvas at first
- * at each index we check if the text overlaps.
- *
- * Where it does, we store that angle and that index.
- *
- * After finding the largest index and angle we calculate how much we need to remove
- * from the shape radius to move the point inwards by that x.
- *
- * We average the left and right distances to get the maximum shape radius that can fit in the box
- * along with labels.
- *
- * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
- * on each side, removing that from the size, halving it and adding the left x protrusion width.
- *
- * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
- * and position it in the most space efficient manner
- *
- * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
- */
+ //
- var pointLabels = this.options.pointLabels;
- var pointLabelFontSize = helpers.getValueOrDefault(pointLabels.fontSize, globalDefaults.defaultFontSize);
- var pointLabeFontStyle = helpers.getValueOrDefault(pointLabels.fontStyle, globalDefaults.defaultFontStyle);
- var pointLabeFontFamily = helpers.getValueOrDefault(pointLabels.fontFamily, globalDefaults.defaultFontFamily);
- var pointLabeFont = helpers.fontString(pointLabelFontSize, pointLabeFontStyle, pointLabeFontFamily);
+ beforeBuildLabels: noop,
+ buildLabels: noop,
+ afterBuildLabels: noop,
- // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
- // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
- var largestPossibleRadius = helpers.min([(this.height / 2 - pointLabelFontSize - 5), this.width / 2]),
- pointPosition,
- i,
- textWidth,
- halfTextWidth,
- furthestRight = this.width,
- furthestRightIndex,
- furthestRightAngle,
- furthestLeft = 0,
- furthestLeftIndex,
- furthestLeftAngle,
- xProtrusionLeft,
- xProtrusionRight,
- radiusReductionRight,
- radiusReductionLeft;
- this.ctx.font = pointLabeFont;
+ //
- for (i = 0; i < this.getValueCount(); i++) {
- // 5px to space the text slightly out - similar to what we do in the draw function.
- pointPosition = this.getPointPosition(i, largestPossibleRadius);
- textWidth = this.ctx.measureText(this.pointLabels[i] ? this.pointLabels[i] : '').width + 5;
+ beforeFit: noop,
+ fit: function() {
+ var me = this,
+ valueOrDefault = helpers.getValueOrDefault,
+ opts = me.options,
+ globalDefaults = Chart.defaults.global,
+ display = opts.display,
+ fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
+ minSize = me.minSize;
- // Add quarter circle to make degree 0 mean top of circle
- var angleRadians = this.getIndexAngle(i) + (Math.PI / 2);
- var angle = (angleRadians * 360 / (2 * Math.PI)) % 360;
+ if (me.isHorizontal()) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = display ? fontSize + (opts.padding * 2) : 0;
+ } else {
+ minSize.width = display ? fontSize + (opts.padding * 2) : 0;
+ minSize.height = me.maxHeight; // fill all the height
+ }
- if (angle === 0 || angle === 180) {
- // At angle 0 and 180, we're at exactly the top/bottom
- // of the radar chart, so text will be aligned centrally, so we'll half it and compare
- // w/left and right text sizes
- halfTextWidth = textWidth / 2;
- if (pointPosition.x + halfTextWidth > furthestRight) {
- furthestRight = pointPosition.x + halfTextWidth;
- furthestRightIndex = i;
- }
- if (pointPosition.x - halfTextWidth < furthestLeft) {
- furthestLeft = pointPosition.x - halfTextWidth;
- furthestLeftIndex = i;
- }
- } else if (angle < 180) {
- // Less than half the values means we'll left align the text
- if (pointPosition.x + textWidth > furthestRight) {
- furthestRight = pointPosition.x + textWidth;
- furthestRightIndex = i;
- }
- } else {
- // More than half the values means we'll right align the text
- if (pointPosition.x - textWidth < furthestLeft) {
- furthestLeft = pointPosition.x - textWidth;
- furthestLeftIndex = i;
- }
- }
- }
+ me.width = minSize.width;
+ me.height = minSize.height;
- xProtrusionLeft = furthestLeft;
- xProtrusionRight = Math.ceil(furthestRight - this.width);
+ },
+ afterFit: noop,
- furthestRightAngle = this.getIndexAngle(furthestRightIndex);
- furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
+ // Shared Methods
+ isHorizontal: function() {
+ var pos = this.options.position;
+ return pos === 'top' || pos === 'bottom';
+ },
- radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI / 2);
- radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI / 2);
+ // Actually draw the title block on the canvas
+ draw: function() {
+ var me = this,
+ ctx = me.ctx,
+ valueOrDefault = helpers.getValueOrDefault,
+ opts = me.options,
+ globalDefaults = Chart.defaults.global;
- // Ensure we actually need to reduce the size of the chart
- radiusReductionRight = (helpers.isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
- radiusReductionLeft = (helpers.isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
+ if (opts.display) {
+ var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
+ fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle),
+ fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily),
+ titleFont = helpers.fontString(fontSize, fontStyle, fontFamily),
+ rotation = 0,
+ titleX,
+ titleY,
+ top = me.top,
+ left = me.left,
+ bottom = me.bottom,
+ right = me.right,
+ maxWidth;
- this.drawingArea = Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2);
- this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
- },
- setCenterPoint: function(leftMovement, rightMovement) {
- var me = this;
- var maxRight = me.width - rightMovement - me.drawingArea,
- maxLeft = leftMovement + me.drawingArea;
+ ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
+ ctx.font = titleFont;
- me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
- // Always vertically in the centre as the text height doesn't change
- me.yCenter = Math.round((me.height / 2) + me.top);
- },
+ // Horizontal
+ if (me.isHorizontal()) {
+ titleX = left + ((right - left) / 2); // midpoint of the width
+ titleY = top + ((bottom - top) / 2); // midpoint of the height
+ maxWidth = right - left;
+ } else {
+ titleX = opts.position === 'left' ? left + (fontSize / 2) : right - (fontSize / 2);
+ titleY = top + ((bottom - top) / 2);
+ maxWidth = bottom - top;
+ rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
+ }
- getIndexAngle: function(index) {
- var angleMultiplier = (Math.PI * 2) / this.getValueCount();
- var startAngle = this.chart.options && this.chart.options.startAngle ?
- this.chart.options.startAngle :
- 0;
+ ctx.save();
+ ctx.translate(titleX, titleY);
+ ctx.rotate(rotation);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+ ctx.fillText(opts.text, 0, 0, maxWidth);
+ ctx.restore();
+ }
+ }
+ });
- var startAngleRadians = startAngle * Math.PI * 2 / 360;
+ function createNewTitleBlockAndAttach(chart, titleOpts) {
+ var title = new Chart.Title({
+ ctx: chart.ctx,
+ options: titleOpts,
+ chart: chart
+ });
- // Start from the top instead of right, so remove a quarter of the circle
- return index * angleMultiplier - (Math.PI / 2) + startAngleRadians;
- },
- getDistanceFromCenterForValue: function(value) {
- var me = this;
+ layout.configure(chart, title, titleOpts);
+ layout.addBox(chart, title);
+ chart.titleBlock = title;
+ }
- if (value === null) {
- return 0; // null always in center
- }
+ return {
+ id: 'title',
- // Take into account half font size + the yPadding of the top value
- var scalingFactor = me.drawingArea / (me.max - me.min);
- if (me.options.reverse) {
- return (me.max - value) * scalingFactor;
- } else {
- return (value - me.min) * scalingFactor;
- }
- },
- getPointPosition: function(index, distanceFromCenter) {
- var me = this;
- var thisAngle = me.getIndexAngle(index);
- return {
- x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
- y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
- };
- },
- getPointPositionForValue: function(index, value) {
- return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
- },
+ beforeInit: function(chart) {
+ var titleOpts = chart.options.title;
- getBasePosition: function() {
- var me = this;
- var min = me.min;
- var max = me.max;
+ if (titleOpts) {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ },
- return me.getPointPositionForValue(0,
- me.beginAtZero? 0:
- min < 0 && max < 0? max :
- min > 0 && max > 0? min :
- 0);
- },
+ beforeUpdate: function(chart) {
+ var titleOpts = chart.options.title;
+ var titleBlock = chart.titleBlock;
- draw: function() {
- var me = this;
- var opts = me.options;
- var gridLineOpts = opts.gridLines;
- var tickOpts = opts.ticks;
- var angleLineOpts = opts.angleLines;
- var pointLabelOpts = opts.pointLabels;
- var getValueOrDefault = helpers.getValueOrDefault;
+ if (titleOpts) {
+ titleOpts = helpers.configMerge(Chart.defaults.global.title, titleOpts);
- if (opts.display) {
- var ctx = me.ctx;
-
- // Tick Font
- var tickFontSize = getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
- var tickFontStyle = getValueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
- var tickFontFamily = getValueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
- var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
-
- helpers.each(me.ticks, function(label, index) {
- // Don't draw a centre value (if it is minimum)
- if (index > 0 || opts.reverse) {
- var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
- var yHeight = me.yCenter - yCenterOffset;
-
- // Draw circular lines around the scale
- if (gridLineOpts.display && index !== 0) {
- ctx.strokeStyle = helpers.getValueAtIndexOrDefault(gridLineOpts.color, index - 1);
- ctx.lineWidth = helpers.getValueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
-
- if (opts.lineArc) {
- // Draw circular arcs between the points
- ctx.beginPath();
- ctx.arc(me.xCenter, me.yCenter, yCenterOffset, 0, Math.PI * 2);
- ctx.closePath();
- ctx.stroke();
- } else {
- // Draw straight lines connecting each index
- ctx.beginPath();
- for (var i = 0; i < me.getValueCount(); i++) {
- var pointPosition = me.getPointPosition(i, yCenterOffset);
- if (i === 0) {
- ctx.moveTo(pointPosition.x, pointPosition.y);
- } else {
- ctx.lineTo(pointPosition.x, pointPosition.y);
- }
- }
- ctx.closePath();
- ctx.stroke();
- }
- }
-
- if (tickOpts.display) {
- var tickFontColor = getValueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
- ctx.font = tickLabelFont;
-
- if (tickOpts.showLabelBackdrop) {
- var labelWidth = ctx.measureText(label).width;
- ctx.fillStyle = tickOpts.backdropColor;
- ctx.fillRect(
- me.xCenter - labelWidth / 2 - tickOpts.backdropPaddingX,
- yHeight - tickFontSize / 2 - tickOpts.backdropPaddingY,
- labelWidth + tickOpts.backdropPaddingX * 2,
- tickFontSize + tickOpts.backdropPaddingY * 2
- );
- }
-
- ctx.textAlign = 'center';
- ctx.textBaseline = "middle";
- ctx.fillStyle = tickFontColor;
- ctx.fillText(label, me.xCenter, yHeight);
- }
- }
- });
-
- if (!opts.lineArc) {
- ctx.lineWidth = angleLineOpts.lineWidth;
- ctx.strokeStyle = angleLineOpts.color;
-
- var outerDistance = me.getDistanceFromCenterForValue(opts.reverse ? me.min : me.max);
-
- // Point Label Font
- var pointLabelFontSize = getValueOrDefault(pointLabelOpts.fontSize, globalDefaults.defaultFontSize);
- var pointLabeFontStyle = getValueOrDefault(pointLabelOpts.fontStyle, globalDefaults.defaultFontStyle);
- var pointLabeFontFamily = getValueOrDefault(pointLabelOpts.fontFamily, globalDefaults.defaultFontFamily);
- var pointLabeFont = helpers.fontString(pointLabelFontSize, pointLabeFontStyle, pointLabeFontFamily);
-
- for (var i = me.getValueCount() - 1; i >= 0; i--) {
- if (angleLineOpts.display) {
- var outerPosition = me.getPointPosition(i, outerDistance);
- ctx.beginPath();
- ctx.moveTo(me.xCenter, me.yCenter);
- ctx.lineTo(outerPosition.x, outerPosition.y);
- ctx.stroke();
- ctx.closePath();
- }
- // Extra 3px out for some label spacing
- var pointLabelPosition = me.getPointPosition(i, outerDistance + 5);
-
- // Keep this in loop since we may support array properties here
- var pointLabelFontColor = getValueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
- ctx.font = pointLabeFont;
- ctx.fillStyle = pointLabelFontColor;
-
- var pointLabels = me.pointLabels;
-
- // Add quarter circle to make degree 0 mean top of circle
- var angleRadians = this.getIndexAngle(i) + (Math.PI / 2);
- var angle = (angleRadians * 360 / (2 * Math.PI)) % 360;
-
- if (angle === 0 || angle === 180) {
- ctx.textAlign = 'center';
- } else if (angle < 180) {
- ctx.textAlign = 'left';
- } else {
- ctx.textAlign = 'right';
- }
-
- // Set the correct text baseline based on outer positioning
- if (angle === 90 || angle === 270) {
- ctx.textBaseline = 'middle';
- } else if (angle > 270 || angle < 90) {
- ctx.textBaseline = 'bottom';
- } else {
- ctx.textBaseline = 'top';
- }
-
- ctx.fillText(pointLabels[i] ? pointLabels[i] : '', pointLabelPosition.x, pointLabelPosition.y);
- }
- }
- }
- }
- });
- Chart.scaleService.registerScaleType("radialLinear", LinearRadialScale, defaultConfig);
-
-};
+ if (titleBlock) {
+ layout.configure(chart, titleBlock, titleOpts);
+ titleBlock.options = titleOpts;
+ } else {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ } else if (titleBlock) {
+ Chart.layoutService.removeBox(chart, titleBlock);
+ delete chart.titleBlock;
+ }
+ }
+ };
+ };
},{}],44:[function(require,module,exports){
-/*global window: false */
-"use strict";
+ 'use strict';
-var moment = require(1);
-moment = typeof(moment) === 'function' ? moment : window.moment;
+ module.exports = function(Chart) {
-module.exports = function(Chart) {
+ var helpers = Chart.helpers;
+ // Default config for a category scale
+ var defaultConfig = {
+ position: 'bottom'
+ };
- var helpers = Chart.helpers;
- var time = {
- units: [{
- name: 'millisecond',
- steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
- }, {
- name: 'second',
- steps: [1, 2, 5, 10, 30]
- }, {
- name: 'minute',
- steps: [1, 2, 5, 10, 30]
- }, {
- name: 'hour',
- steps: [1, 2, 3, 6, 12]
- }, {
- name: 'day',
- steps: [1, 2, 5]
- }, {
- name: 'week',
- maxStep: 4
- }, {
- name: 'month',
- maxStep: 3
- }, {
- name: 'quarter',
- maxStep: 4
- }, {
- name: 'year',
- maxStep: false
- }]
- };
+ var DatasetScale = Chart.Scale.extend({
+ /**
+ * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
+ * else fall back to data.labels
+ * @private
+ */
+ getLabels: function() {
+ var data = this.chart.data;
+ return (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
+ },
- var defaultConfig = {
- position: "bottom",
+ determineDataLimits: function() {
+ var me = this;
+ var labels = me.getLabels();
+ me.minIndex = 0;
+ me.maxIndex = labels.length - 1;
+ var findIndex;
- time: {
- parser: false, // false == a pattern string from http://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
- format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
- unit: false, // false == automatic or override with week, month, year, etc.
- round: false, // none, or override with week, month, year, etc.
- displayFormat: false, // DEPRECATED
- isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
+ if (me.options.ticks.min !== undefined) {
+ // user specified min value
+ findIndex = helpers.indexOf(labels, me.options.ticks.min);
+ me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
+ }
- // defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
- displayFormats: {
- 'millisecond': 'h:mm:ss.SSS a', // 11:20:01.123 AM,
- 'second': 'h:mm:ss a', // 11:20:01 AM
- 'minute': 'h:mm:ss a', // 11:20:01 AM
- 'hour': 'MMM D, hA', // Sept 4, 5PM
- 'day': 'll', // Sep 4 2015
- 'week': 'll', // Week 46, or maybe "[W]WW - YYYY" ?
- 'month': 'MMM YYYY', // Sept 2015
- 'quarter': '[Q]Q - YYYY', // Q3
- 'year': 'YYYY' // 2015
- }
- },
- ticks: {
- autoSkip: false
- }
- };
+ if (me.options.ticks.max !== undefined) {
+ // user specified max value
+ findIndex = helpers.indexOf(labels, me.options.ticks.max);
+ me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
+ }
- var TimeScale = Chart.Scale.extend({
- initialize: function() {
- if (!moment) {
- throw new Error('Chart.js - Moment.js could not be found! You must include it before Chart.js to use the time scale. Download at https://momentjs.com');
- }
+ me.min = labels[me.minIndex];
+ me.max = labels[me.maxIndex];
+ },
- Chart.Scale.prototype.initialize.call(this);
- },
- getLabelMoment: function(datasetIndex, index) {
- if (typeof this.labelMoments[datasetIndex] != 'undefined') {
- return this.labelMoments[datasetIndex][index];
- }
+ buildTicks: function() {
+ var me = this;
+ var labels = me.getLabels();
+ // If we are viewing some subset of labels, slice the original array
+ me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
+ },
- return null;
- },
- getMomentStartOf: function(tick) {
- var me = this;
- if (me.options.time.unit === 'week' && me.options.time.isoWeekday !== false) {
- return tick.clone().startOf('isoWeek').isoWeekday(me.options.time.isoWeekday);
- } else {
- return tick.clone().startOf(me.tickUnit);
- }
- },
- determineDataLimits: function() {
- var me = this;
- me.labelMoments = [];
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var data = me.chart.data;
+ var isHorizontal = me.isHorizontal();
- // Only parse these once. If the dataset does not have data as x,y pairs, we will use
- // these
- var scaleLabelMoments = [];
- if (me.chart.data.labels && me.chart.data.labels.length > 0) {
- helpers.each(me.chart.data.labels, function(label) {
- var labelMoment = me.parseTime(label);
+ if (data.yLabels && !isHorizontal) {
+ return me.getRightValue(data.datasets[datasetIndex].data[index]);
+ }
+ return me.ticks[index - me.minIndex];
+ },
- if (labelMoment.isValid()) {
- if (me.options.time.round) {
- labelMoment.startOf(me.options.time.round);
- }
- scaleLabelMoments.push(labelMoment);
- }
- }, me);
+ // Used to get data value locations. Value can either be an index or a numerical value
+ getPixelForValue: function(value, index, datasetIndex, includeOffset) {
+ var me = this;
+ // 1 is added because we need the length but we have the indexes
+ var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
- me.firstTick = moment.min.call(me, scaleLabelMoments);
- me.lastTick = moment.max.call(me, scaleLabelMoments);
- } else {
- me.firstTick = null;
- me.lastTick = null;
- }
+ // If value is a data object, then index is the index in the data array,
+ // not the index of the scale. We need to change that.
+ var valueCategory;
+ if (value !== undefined && value !== null) {
+ valueCategory = me.isHorizontal() ? value.x : value.y;
+ }
+ if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
+ var labels = me.getLabels();
+ value = valueCategory || value;
+ var idx = labels.indexOf(value);
+ index = idx !== -1 ? idx : index;
+ }
- helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
- var momentsForDataset = [];
- var datasetVisible = me.chart.isDatasetVisible(datasetIndex);
+ if (me.isHorizontal()) {
+ var valueWidth = me.width / offsetAmt;
+ var widthOffset = (valueWidth * (index - me.minIndex));
- if (typeof dataset.data[0] === 'object' && dataset.data[0] !== null) {
- helpers.each(dataset.data, function(value) {
- var labelMoment = me.parseTime(me.getRightValue(value));
+ if (me.options.gridLines.offsetGridLines && includeOffset || me.maxIndex === me.minIndex && includeOffset) {
+ widthOffset += (valueWidth / 2);
+ }
- if (labelMoment.isValid()) {
- if (me.options.time.round) {
- labelMoment.startOf(me.options.time.round);
- }
- momentsForDataset.push(labelMoment);
+ return me.left + Math.round(widthOffset);
+ }
+ var valueHeight = me.height / offsetAmt;
+ var heightOffset = (valueHeight * (index - me.minIndex));
- if (datasetVisible) {
- // May have gone outside the scale ranges, make sure we keep the first and last ticks updated
- me.firstTick = me.firstTick !== null ? moment.min(me.firstTick, labelMoment) : labelMoment;
- me.lastTick = me.lastTick !== null ? moment.max(me.lastTick, labelMoment) : labelMoment;
- }
- }
- }, me);
- } else {
- // We have no labels. Use the ones from the scale
- momentsForDataset = scaleLabelMoments;
- }
+ if (me.options.gridLines.offsetGridLines && includeOffset) {
+ heightOffset += (valueHeight / 2);
+ }
- me.labelMoments.push(momentsForDataset);
- }, me);
+ return me.top + Math.round(heightOffset);
+ },
+ getPixelForTick: function(index, includeOffset) {
+ return this.getPixelForValue(this.ticks[index], index + this.minIndex, null, includeOffset);
+ },
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var value;
+ var offsetAmt = Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var horz = me.isHorizontal();
+ var valueDimension = (horz ? me.width : me.height) / offsetAmt;
- // Set these after we've done all the data
- if (me.options.time.min) {
- me.firstTick = me.parseTime(me.options.time.min);
- }
+ pixel -= horz ? me.left : me.top;
- if (me.options.time.max) {
- me.lastTick = me.parseTime(me.options.time.max);
- }
+ if (me.options.gridLines.offsetGridLines) {
+ pixel -= (valueDimension / 2);
+ }
- // We will modify these, so clone for later
- me.firstTick = (me.firstTick || moment()).clone();
- me.lastTick = (me.lastTick || moment()).clone();
- },
- buildTicks: function() {
- var me = this;
+ if (pixel <= 0) {
+ value = 0;
+ } else {
+ value = Math.round(pixel / valueDimension);
+ }
- me.ctx.save();
- var tickFontSize = helpers.getValueOrDefault(me.options.ticks.fontSize, Chart.defaults.global.defaultFontSize);
- var tickFontStyle = helpers.getValueOrDefault(me.options.ticks.fontStyle, Chart.defaults.global.defaultFontStyle);
- var tickFontFamily = helpers.getValueOrDefault(me.options.ticks.fontFamily, Chart.defaults.global.defaultFontFamily);
- var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
- me.ctx.font = tickLabelFont;
+ return value;
+ },
+ getBasePixel: function() {
+ return this.bottom;
+ }
+ });
- me.ticks = [];
- me.unitScale = 1; // How much we scale the unit by, ie 2 means 2x unit per step
- me.scaleSizeInUnits = 0; // How large the scale is in the base unit (seconds, minutes, etc)
+ Chart.scaleService.registerScaleType('category', DatasetScale, defaultConfig);
- // Set unit override if applicable
- if (me.options.time.unit) {
- me.tickUnit = me.options.time.unit || 'day';
- me.displayFormat = me.options.time.displayFormats[me.tickUnit];
- me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
- me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, 1);
- } else {
- // Determine the smallest needed unit of the time
- var innerWidth = me.isHorizontal() ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
+ };
- // Crude approximation of what the label length might be
- var tempFirstLabel = me.tickFormatFunction(me.firstTick, 0, []);
- var tickLabelWidth = me.ctx.measureText(tempFirstLabel).width;
- var cosRotation = Math.cos(helpers.toRadians(me.options.ticks.maxRotation));
- var sinRotation = Math.sin(helpers.toRadians(me.options.ticks.maxRotation));
- tickLabelWidth = (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
- var labelCapacity = innerWidth / (tickLabelWidth);
+},{}],45:[function(require,module,exports){
+ 'use strict';
- // Start as small as possible
- me.tickUnit = 'millisecond';
- me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
- me.displayFormat = me.options.time.displayFormats[me.tickUnit];
+ module.exports = function(Chart) {
- var unitDefinitionIndex = 0;
- var unitDefinition = time.units[unitDefinitionIndex];
+ var helpers = Chart.helpers;
- // While we aren't ideal and we don't have units left
- while (unitDefinitionIndex < time.units.length) {
- // Can we scale this unit. If `false` we can scale infinitely
- me.unitScale = 1;
+ var defaultConfig = {
+ position: 'left',
+ ticks: {
+ callback: Chart.Ticks.formatters.linear
+ }
+ };
- if (helpers.isArray(unitDefinition.steps) && Math.ceil(me.scaleSizeInUnits / labelCapacity) < helpers.max(unitDefinition.steps)) {
- // Use one of the prefedined steps
- for (var idx = 0; idx < unitDefinition.steps.length; ++idx) {
- if (unitDefinition.steps[idx] >= Math.ceil(me.scaleSizeInUnits / labelCapacity)) {
- me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, unitDefinition.steps[idx]);
- break;
- }
- }
+ var LinearScale = Chart.LinearScaleBase.extend({
- break;
- } else if ((unitDefinition.maxStep === false) || (Math.ceil(me.scaleSizeInUnits / labelCapacity) < unitDefinition.maxStep)) {
- // We have a max step. Scale this unit
- me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, Math.ceil(me.scaleSizeInUnits / labelCapacity));
- break;
- } else {
- // Move to the next unit up
- ++unitDefinitionIndex;
- unitDefinition = time.units[unitDefinitionIndex];
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var isHorizontal = me.isHorizontal();
+ var DEFAULT_MIN = 0;
+ var DEFAULT_MAX = 1;
- me.tickUnit = unitDefinition.name;
- var leadingUnitBuffer = me.firstTick.diff(me.getMomentStartOf(me.firstTick), me.tickUnit, true);
- var trailingUnitBuffer = me.getMomentStartOf(me.lastTick.clone().add(1, me.tickUnit)).diff(me.lastTick, me.tickUnit, true);
- me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true) + leadingUnitBuffer + trailingUnitBuffer;
- me.displayFormat = me.options.time.displayFormats[unitDefinition.name];
- }
- }
- }
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
- var roundedStart;
+ // First Calculate the range
+ me.min = null;
+ me.max = null;
- // Only round the first tick if we have no hard minimum
- if (!me.options.time.min) {
- me.firstTick = me.getMomentStartOf(me.firstTick);
- roundedStart = me.firstTick;
- } else {
- roundedStart = me.getMomentStartOf(me.firstTick);
- }
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
- // Only round the last tick if we have no hard maximum
- if (!me.options.time.max) {
- var roundedEnd = me.getMomentStartOf(me.lastTick);
- var delta = roundedEnd.diff(me.lastTick, me.tickUnit, true);
- if (delta < 0) {
- // Do not use end of because we need me to be in the next time unit
- me.lastTick = me.getMomentStartOf(me.lastTick.add(1, me.tickUnit));
- } else if (delta >= 0) {
- me.lastTick = roundedEnd;
- }
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
- me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
- }
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
- me.smallestLabelSeparation = me.width;
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
- helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
- for (var i = 1; i < me.labelMoments[datasetIndex].length; i++) {
- me.smallestLabelSeparation = Math.min(me.smallestLabelSeparation, me.labelMoments[datasetIndex][i].diff(me.labelMoments[datasetIndex][i - 1], me.tickUnit, true));
- }
- }, me);
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = {
+ positiveValues: [],
+ negativeValues: []
+ };
+ }
- // Tick displayFormat override
- if (me.options.time.displayFormat) {
- me.displayFormat = me.options.time.displayFormat;
- }
+ // Store these per type
+ var positiveValues = valuesPerStack[key].positiveValues;
+ var negativeValues = valuesPerStack[key].negativeValues;
- // first tick. will have been rounded correctly if options.time.min is not specified
- me.ticks.push(me.firstTick.clone());
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
- // For every unit in between the first and last moment, create a moment and add it to the ticks tick
- for (var i = 1; i <= me.scaleSizeInUnits; ++i) {
- var newTick = roundedStart.clone().add(i, me.tickUnit);
+ positiveValues[index] = positiveValues[index] || 0;
+ negativeValues[index] = negativeValues[index] || 0;
- // Are we greater than the max time
- if (me.options.time.max && newTick.diff(me.lastTick, me.tickUnit, true) >= 0) {
- break;
- }
+ if (opts.relativePoints) {
+ positiveValues[index] = 100;
+ } else if (value < 0) {
+ negativeValues[index] += value;
+ } else {
+ positiveValues[index] += value;
+ }
+ });
+ }
+ });
- if (i % me.unitScale === 0) {
- me.ticks.push(newTick);
- }
- }
+ helpers.each(valuesPerStack, function(valuesForType) {
+ var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
+ var minVal = helpers.min(values);
+ var maxVal = helpers.max(values);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ });
- // Always show the right tick
- var diff = me.ticks[me.ticks.length - 1].diff(me.lastTick, me.tickUnit);
- if (diff !== 0 || me.scaleSizeInUnits === 0) {
- // this is a weird case. If the <max> option is the same as the end option, we can't just diff the times because the tick was created from the roundedStart
- // but the last tick was not rounded.
- if (me.options.time.max) {
- me.ticks.push(me.lastTick.clone());
- me.scaleSizeInUnits = me.lastTick.diff(me.ticks[0], me.tickUnit, true);
- } else {
- me.ticks.push(me.lastTick.clone());
- me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
- }
- }
+ } else {
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
- me.ctx.restore();
- },
- // Get tooltip label
- getLabelForIndex: function(index, datasetIndex) {
- var me = this;
- var label = me.chart.data.labels && index < me.chart.data.labels.length ? me.chart.data.labels[index] : '';
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
- if (typeof me.chart.data.datasets[datasetIndex].data[0] === 'object') {
- label = me.getRightValue(me.chart.data.datasets[datasetIndex].data[index]);
- }
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+ });
+ }
+ });
+ }
- // Format nicely
- if (me.options.time.tooltipFormat) {
- label = me.parseTime(label).format(me.options.time.tooltipFormat);
- }
+ me.min = isFinite(me.min) ? me.min : DEFAULT_MIN;
+ me.max = isFinite(me.max) ? me.max : DEFAULT_MAX;
- return label;
- },
- // Function to format an individual tick mark
- tickFormatFunction: function(tick, index, ticks) {
- var formattedTick = tick.format(this.displayFormat);
- var tickOpts = this.options.ticks;
- var callback = helpers.getValueOrDefault(tickOpts.callback, tickOpts.userCallback);
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ this.handleTickRangeOptions();
+ },
+ getTickLimit: function() {
+ var maxTicks;
+ var me = this;
+ var tickOpts = me.options.ticks;
- if (callback) {
- return callback(formattedTick, index, ticks);
- } else {
- return formattedTick;
- }
- },
- convertTicksToLabels: function() {
- var me = this;
- me.tickMoments = me.ticks;
- me.ticks = me.ticks.map(me.tickFormatFunction, me);
- },
- getPixelForValue: function(value, index, datasetIndex) {
- var me = this;
- if (!value || !value.isValid) {
- // not already a moment object
- value = moment(me.getRightValue(value));
- }
- var labelMoment = value && value.isValid && value.isValid() ? value : me.getLabelMoment(datasetIndex, index);
+ if (me.isHorizontal()) {
+ maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
+ } else {
+ // The factor of 2 used to scale the font size has been experimentally determined.
+ var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, Chart.defaults.global.defaultFontSize);
+ maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
+ }
- if (labelMoment) {
- var offset = labelMoment.diff(me.firstTick, me.tickUnit, true);
+ return maxTicks;
+ },
+ // Called after the ticks are built. We need
+ handleDirectionalChanges: function() {
+ if (!this.isHorizontal()) {
+ // We are in a vertical orientation. The top value is the highest. So reverse the array
+ this.ticks.reverse();
+ }
+ },
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+ // Utils
+ getPixelForValue: function(value) {
+ // This must be called after fit has been run so that
+ // this.left, this.top, this.right, and this.bottom have been defined
+ var me = this;
+ var start = me.start;
- var decimal = offset !== 0 ? offset / me.scaleSizeInUnits : offset;
+ var rightValue = +me.getRightValue(value);
+ var pixel;
+ var range = me.end - start;
- if (me.isHorizontal()) {
- var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
- var valueOffset = (innerWidth * decimal) + me.paddingLeft;
+ if (me.isHorizontal()) {
+ pixel = me.left + (me.width / range * (rightValue - start));
+ return Math.round(pixel);
+ }
- return me.left + Math.round(valueOffset);
- } else {
- var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
- var heightOffset = (innerHeight * decimal) + me.paddingTop;
+ pixel = me.bottom - (me.height / range * (rightValue - start));
+ return Math.round(pixel);
+ },
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var innerDimension = isHorizontal ? me.width : me.height;
+ var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
+ return me.start + ((me.end - me.start) * offset);
+ },
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.ticksAsNumbers[index]);
+ }
+ });
+ Chart.scaleService.registerScaleType('linear', LinearScale, defaultConfig);
- return me.top + Math.round(heightOffset);
- }
- }
- },
- getPixelForTick: function(index) {
- return this.getPixelForValue(this.tickMoments[index], null, null);
- },
- getValueForPixel: function(pixel) {
- var me = this;
- var innerDimension = me.isHorizontal() ? me.width - (me.paddingLeft + me.paddingRight) : me.height - (me.paddingTop + me.paddingBottom);
- var offset = (pixel - (me.isHorizontal() ? me.left + me.paddingLeft : me.top + me.paddingTop)) / innerDimension;
- offset *= me.scaleSizeInUnits;
- return me.firstTick.clone().add(moment.duration(offset, me.tickUnit).asSeconds(), 'seconds');
- },
- parseTime: function(label) {
- var me = this;
- if (typeof me.options.time.parser === 'string') {
- return moment(label, me.options.time.parser);
- }
- if (typeof me.options.time.parser === 'function') {
- return me.options.time.parser(label);
- }
- // Date objects
- if (typeof label.getMonth === 'function' || typeof label === 'number') {
- return moment(label);
- }
- // Moment support
- if (label.isValid && label.isValid()) {
- return label;
- }
- // Custom parsing (return an instance of moment)
- if (typeof me.options.time.format !== 'string' && me.options.time.format.call) {
- console.warn("options.time.format is deprecated and replaced by options.time.parser. See http://nnnick.github.io/Chart.js/docs-v2/#scales-time-scale");
- return me.options.time.format(label);
- }
- // Moment format parsing
- return moment(label, me.options.time.format);
- }
- });
- Chart.scaleService.registerScaleType("time", TimeScale, defaultConfig);
+ };
-};
+},{}],46:[function(require,module,exports){
+ 'use strict';
+
+ module.exports = function(Chart) {
+
+ var helpers = Chart.helpers,
+ noop = helpers.noop;
+
+ Chart.LinearScaleBase = Chart.Scale.extend({
+ handleTickRangeOptions: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
+ // do nothing since that would make the chart weird. If the user really wants a weird chart
+ // axis, they can manually override it
+ if (tickOpts.beginAtZero) {
+ var minSign = helpers.sign(me.min);
+ var maxSign = helpers.sign(me.max);
+
+ if (minSign < 0 && maxSign < 0) {
+ // move the top up to 0
+ me.max = 0;
+ } else if (minSign > 0 && maxSign > 0) {
+ // move the bottom down to 0
+ me.min = 0;
+ }
+ }
+
+ if (tickOpts.min !== undefined) {
+ me.min = tickOpts.min;
+ } else if (tickOpts.suggestedMin !== undefined) {
+ if (me.min === null) {
+ me.min = tickOpts.suggestedMin;
+ } else {
+ me.min = Math.min(me.min, tickOpts.suggestedMin);
+ }
+ }
+
+ if (tickOpts.max !== undefined) {
+ me.max = tickOpts.max;
+ } else if (tickOpts.suggestedMax !== undefined) {
+ if (me.max === null) {
+ me.max = tickOpts.suggestedMax;
+ } else {
+ me.max = Math.max(me.max, tickOpts.suggestedMax);
+ }
+ }
+
+ if (me.min === me.max) {
+ me.max++;
+
+ if (!tickOpts.beginAtZero) {
+ me.min--;
+ }
+ }
+ },
+ getTickLimit: noop,
+ handleDirectionalChanges: noop,
+
+ buildTicks: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // Figure out what the max number of ticks we can support it is based on the size of
+ // the axis area. For now, we say that the minimum tick spacing in pixels must be 50
+ // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
+ // the graph. Make sure we always have at least 2 ticks
+ var maxTicks = me.getTickLimit();
+ maxTicks = Math.max(2, maxTicks);
+
+ var numericGeneratorOptions = {
+ maxTicks: maxTicks,
+ min: tickOpts.min,
+ max: tickOpts.max,
+ stepSize: helpers.getValueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
+ };
+ var ticks = me.ticks = Chart.Ticks.generators.linear(numericGeneratorOptions, me);
+
+ me.handleDirectionalChanges();
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers.max(ticks);
+ me.min = helpers.min(ticks);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ me.ticksAsNumbers = me.ticks.slice();
+ me.zeroLineIndex = me.ticks.indexOf(0);
+
+ Chart.Scale.prototype.convertTicksToLabels.call(me);
+ }
+ });
+ };
+
+},{}],47:[function(require,module,exports){
+ 'use strict';
+
+ module.exports = function(Chart) {
+
+ var helpers = Chart.helpers;
+
+ var defaultConfig = {
+ position: 'left',
+
+ // label settings
+ ticks: {
+ callback: Chart.Ticks.formatters.logarithmic
+ }
+ };
+
+ var LogarithmicScale = Chart.Scale.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var getValueOrDefault = helpers.getValueOrDefault;
+ var isHorizontal = me.isHorizontal();
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+
+ // Calculate Range
+ me.min = null;
+ me.max = null;
+ me.minNotZero = null;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
+
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = [];
+ }
+
+ helpers.each(dataset.data, function(rawValue, index) {
+ var values = valuesPerStack[key];
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ values[index] = values[index] || 0;
+
+ if (opts.relativePoints) {
+ values[index] = 100;
+ } else {
+ // Don't need to split positive and negative since the log scale can't handle a 0 crossing
+ values[index] += value;
+ }
+ });
+ }
+ });
+
+ helpers.each(valuesPerStack, function(valuesForType) {
+ var minVal = helpers.min(valuesForType);
+ var maxVal = helpers.max(valuesForType);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ });
+
+ } else {
+ helpers.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
+
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+
+ if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
+ me.minNotZero = value;
+ }
+ });
+ }
+ });
+ }
+
+ me.min = getValueOrDefault(tickOpts.min, me.min);
+ me.max = getValueOrDefault(tickOpts.max, me.max);
+
+ if (me.min === me.max) {
+ if (me.min !== 0 && me.min !== null) {
+ me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
+ me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
+ } else {
+ me.min = 1;
+ me.max = 10;
+ }
+ }
+ },
+ buildTicks: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ var generationOptions = {
+ min: tickOpts.min,
+ max: tickOpts.max
+ };
+ var ticks = me.ticks = Chart.Ticks.generators.logarithmic(generationOptions, me);
+
+ if (!me.isHorizontal()) {
+ // We are in a vertical orientation. The top value is the highest. So reverse the array
+ ticks.reverse();
+ }
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers.max(ticks);
+ me.min = helpers.min(ticks);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ },
+ convertTicksToLabels: function() {
+ this.tickValues = this.ticks.slice();
+
+ Chart.Scale.prototype.convertTicksToLabels.call(this);
+ },
+ // Get the correct tooltip label
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.tickValues[index]);
+ },
+ getPixelForValue: function(value) {
+ var me = this;
+ var innerDimension;
+ var pixel;
+
+ var start = me.start;
+ var newVal = +me.getRightValue(value);
+ var range;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ if (me.isHorizontal()) {
+ range = helpers.log10(me.end) - helpers.log10(start); // todo: if start === 0
+ if (newVal === 0) {
+ pixel = me.left;
+ } else {
+ innerDimension = me.width;
+ pixel = me.left + (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
+ }
+ } else {
+ // Bottom - top since pixels increase downward on a screen
+ innerDimension = me.height;
+ if (start === 0 && !tickOpts.reverse) {
+ range = helpers.log10(me.end) - helpers.log10(me.minNotZero);
+ if (newVal === start) {
+ pixel = me.bottom;
+ } else if (newVal === me.minNotZero) {
+ pixel = me.bottom - innerDimension * 0.02;
+ } else {
+ pixel = me.bottom - innerDimension * 0.02 - (innerDimension * 0.98/ range * (helpers.log10(newVal)-helpers.log10(me.minNotZero)));
+ }
+ } else if (me.end === 0 && tickOpts.reverse) {
+ range = helpers.log10(me.start) - helpers.log10(me.minNotZero);
+ if (newVal === me.end) {
+ pixel = me.top;
+ } else if (newVal === me.minNotZero) {
+ pixel = me.top + innerDimension * 0.02;
+ } else {
+ pixel = me.top + innerDimension * 0.02 + (innerDimension * 0.98/ range * (helpers.log10(newVal)-helpers.log10(me.minNotZero)));
+ }
+ } else if (newVal === 0) {
+ pixel = tickOpts.reverse ? me.top : me.bottom;
+ } else {
+ range = helpers.log10(me.end) - helpers.log10(start);
+ innerDimension = me.height;
+ pixel = me.bottom - (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
+ }
+ }
+ return pixel;
+ },
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var range = helpers.log10(me.end) - helpers.log10(me.start);
+ var value, innerDimension;
+
+ if (me.isHorizontal()) {
+ innerDimension = me.width;
+ value = me.start * Math.pow(10, (pixel - me.left) * range / innerDimension);
+ } else { // todo: if start === 0
+ innerDimension = me.height;
+ value = Math.pow(10, (me.bottom - pixel) * range / innerDimension) / me.start;
+ }
+ return value;
+ }
+ });
+ Chart.scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig);
+
+ };
+
+},{}],48:[function(require,module,exports){
+ 'use strict';
+
+ module.exports = function(Chart) {
+
+ var helpers = Chart.helpers;
+ var globalDefaults = Chart.defaults.global;
+
+ var defaultConfig = {
+ display: true,
+
+ // Boolean - Whether to animate scaling the chart from the centre
+ animate: true,
+ position: 'chartArea',
+
+ angleLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1
+ },
+
+ gridLines: {
+ circular: false
+ },
+
+ // label settings
+ ticks: {
+ // Boolean - Show a backdrop to the scale label
+ showLabelBackdrop: true,
+
+ // String - The colour of the label backdrop
+ backdropColor: 'rgba(255,255,255,0.75)',
+
+ // Number - The backdrop padding above & below the label in pixels
+ backdropPaddingY: 2,
+
+ // Number - The backdrop padding to the side of the label in pixels
+ backdropPaddingX: 2,
+
+ callback: Chart.Ticks.formatters.linear
+ },
+
+ pointLabels: {
+ // Boolean - if true, show point labels
+ display: true,
+
+ // Number - Point label font size in pixels
+ fontSize: 10,
+
+ // Function - Used to convert point labels
+ callback: function(label) {
+ return label;
+ }
+ }
+ };
+
+ function getValueCount(scale) {
+ var opts = scale.options;
+ return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
+ }
+
+ function getPointLabelFontOptions(scale) {
+ var pointLabelOptions = scale.options.pointLabels;
+ var fontSize = helpers.getValueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize);
+ var fontStyle = helpers.getValueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle);
+ var fontFamily = helpers.getValueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily);
+ var font = helpers.fontString(fontSize, fontStyle, fontFamily);
+
+ return {
+ size: fontSize,
+ style: fontStyle,
+ family: fontFamily,
+ font: font
+ };
+ }
+
+ function measureLabelSize(ctx, fontSize, label) {
+ if (helpers.isArray(label)) {
+ return {
+ w: helpers.longestText(ctx, ctx.font, label),
+ h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize)
+ };
+ }
+
+ return {
+ w: ctx.measureText(label).width,
+ h: fontSize
+ };
+ }
+
+ function determineLimits(angle, pos, size, min, max) {
+ if (angle === min || angle === max) {
+ return {
+ start: pos - (size / 2),
+ end: pos + (size / 2)
+ };
+ } else if (angle < min || angle > max) {
+ return {
+ start: pos - size - 5,
+ end: pos
+ };
+ }
+
+ return {
+ start: pos,
+ end: pos + size + 5
+ };
+ }
+
+ /**
+ * Helper function to fit a radial linear scale with point labels
+ */
+ function fitWithPointLabels(scale) {
+ /*
+ * Right, this is really confusing and there is a lot of maths going on here
+ * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
+ *
+ * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
+ *
+ * Solution:
+ *
+ * We assume the radius of the polygon is half the size of the canvas at first
+ * at each index we check if the text overlaps.
+ *
+ * Where it does, we store that angle and that index.
+ *
+ * After finding the largest index and angle we calculate how much we need to remove
+ * from the shape radius to move the point inwards by that x.
+ *
+ * We average the left and right distances to get the maximum shape radius that can fit in the box
+ * along with labels.
+ *
+ * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
+ * on each side, removing that from the size, halving it and adding the left x protrusion width.
+ *
+ * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
+ * and position it in the most space efficient manner
+ *
+ * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
+ */
+
+ var plFont = getPointLabelFontOptions(scale);
+
+ // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
+ // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
+ var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
+ var furthestLimits = {
+ r: scale.width,
+ l: 0,
+ t: scale.height,
+ b: 0
+ };
+ var furthestAngles = {};
+ var i;
+ var textSize;
+ var pointPosition;
+
+ scale.ctx.font = plFont.font;
+ scale._pointLabelSizes = [];
+
+ var valueCount = getValueCount(scale);
+ for (i = 0; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, largestPossibleRadius);
+ textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || '');
+ scale._pointLabelSizes[i] = textSize;
+
+ // Add quarter circle to make degree 0 mean top of circle
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers.toDegrees(angleRadians) % 360;
+ var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
+ var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
+
+ if (hLimits.start < furthestLimits.l) {
+ furthestLimits.l = hLimits.start;
+ furthestAngles.l = angleRadians;
+ }
+
+ if (hLimits.end > furthestLimits.r) {
+ furthestLimits.r = hLimits.end;
+ furthestAngles.r = angleRadians;
+ }
+
+ if (vLimits.start < furthestLimits.t) {
+ furthestLimits.t = vLimits.start;
+ furthestAngles.t = angleRadians;
+ }
+
+ if (vLimits.end > furthestLimits.b) {
+ furthestLimits.b = vLimits.end;
+ furthestAngles.b = angleRadians;
+ }
+ }
+
+ scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles);
+ }
+
+ /**
+ * Helper function to fit a radial linear scale with no point labels
+ */
+ function fit(scale) {
+ var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
+ scale.drawingArea = Math.round(largestPossibleRadius);
+ scale.setCenterPoint(0, 0, 0, 0);
+ }
+
+ function getTextAlignForAngle(angle) {
+ if (angle === 0 || angle === 180) {
+ return 'center';
+ } else if (angle < 180) {
+ return 'left';
+ }
+
+ return 'right';
+ }
+
+ function fillText(ctx, text, position, fontSize) {
+ if (helpers.isArray(text)) {
+ var y = position.y;
+ var spacing = 1.5 * fontSize;
+
+ for (var i = 0; i < text.length; ++i) {
+ ctx.fillText(text[i], position.x, y);
+ y+= spacing;
+ }
+ } else {
+ ctx.fillText(text, position.x, position.y);
+ }
+ }
+
+ function adjustPointPositionForLabelHeight(angle, textSize, position) {
+ if (angle === 90 || angle === 270) {
+ position.y -= (textSize.h / 2);
+ } else if (angle > 270 || angle < 90) {
+ position.y -= textSize.h;
+ }
+ }
+
+ function drawPointLabels(scale) {
+ var ctx = scale.ctx;
+ var getValueOrDefault = helpers.getValueOrDefault;
+ var opts = scale.options;
+ var angleLineOpts = opts.angleLines;
+ var pointLabelOpts = opts.pointLabels;
+
+ ctx.lineWidth = angleLineOpts.lineWidth;
+ ctx.strokeStyle = angleLineOpts.color;
+
+ var outerDistance = scale.getDistanceFromCenterForValue(opts.reverse ? scale.min : scale.max);
+
+ // Point Label Font
+ var plFont = getPointLabelFontOptions(scale);
+
+ ctx.textBaseline = 'top';
+
+ for (var i = getValueCount(scale) - 1; i >= 0; i--) {
+ if (angleLineOpts.display) {
+ var outerPosition = scale.getPointPosition(i, outerDistance);
+ ctx.beginPath();
+ ctx.moveTo(scale.xCenter, scale.yCenter);
+ ctx.lineTo(outerPosition.x, outerPosition.y);
+ ctx.stroke();
+ ctx.closePath();
+ }
+
+ if (pointLabelOpts.display) {
+ // Extra 3px out for some label spacing
+ var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);
+
+ // Keep this in loop since we may support array properties here
+ var pointLabelFontColor = getValueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
+ ctx.font = plFont.font;
+ ctx.fillStyle = pointLabelFontColor;
+
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers.toDegrees(angleRadians);
+ ctx.textAlign = getTextAlignForAngle(angle);
+ adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
+ fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
+ }
+ }
+ }
+
+ function drawRadiusLine(scale, gridLineOpts, radius, index) {
+ var ctx = scale.ctx;
+ ctx.strokeStyle = helpers.getValueAtIndexOrDefault(gridLineOpts.color, index - 1);
+ ctx.lineWidth = helpers.getValueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
+
+ if (scale.options.gridLines.circular) {
+ // Draw circular arcs between the points
+ ctx.beginPath();
+ ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
+ ctx.closePath();
+ ctx.stroke();
+ } else {
+ // Draw straight lines connecting each index
+ var valueCount = getValueCount(scale);
+
+ if (valueCount === 0) {
+ return;
+ }
+
+ ctx.beginPath();
+ var pointPosition = scale.getPointPosition(0, radius);
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+
+ for (var i = 1; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, radius);
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+
+ ctx.closePath();
+ ctx.stroke();
+ }
+ }
+
+ function numberOrZero(param) {
+ return helpers.isNumber(param) ? param : 0;
+ }
+
+ var LinearRadialScale = Chart.LinearScaleBase.extend({
+ setDimensions: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ // Set the unconstrained dimension before label rotation
+ me.width = me.maxWidth;
+ me.height = me.maxHeight;
+ me.xCenter = Math.round(me.width / 2);
+ me.yCenter = Math.round(me.height / 2);
+
+ var minSize = helpers.min([me.height, me.width]);
+ var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
+ me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
+ },
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var min = Number.POSITIVE_INFINITY;
+ var max = Number.NEGATIVE_INFINITY;
+
+ helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+
+ helpers.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ min = Math.min(value, min);
+ max = Math.max(value, max);
+ });
+ }
+ });
+
+ me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
+ me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ me.handleTickRangeOptions();
+ },
+ getTickLimit: function() {
+ var tickOpts = this.options.ticks;
+ var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
+ return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
+
+ // Point labels
+ me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
+ },
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+ fit: function() {
+ if (this.options.pointLabels.display) {
+ fitWithPointLabels(this);
+ } else {
+ fit(this);
+ }
+ },
+ /**
+ * Set radius reductions and determine new radius and center point
+ * @private
+ */
+ setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
+ var me = this;
+ var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
+ var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
+ var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
+ var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b);
+
+ radiusReductionLeft = numberOrZero(radiusReductionLeft);
+ radiusReductionRight = numberOrZero(radiusReductionRight);
+ radiusReductionTop = numberOrZero(radiusReductionTop);
+ radiusReductionBottom = numberOrZero(radiusReductionBottom);
+
+ me.drawingArea = Math.min(
+ Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
+ Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
+ me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
+ },
+ setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
+ var me = this;
+ var maxRight = me.width - rightMovement - me.drawingArea,
+ maxLeft = leftMovement + me.drawingArea,
+ maxTop = topMovement + me.drawingArea,
+ maxBottom = me.height - bottomMovement - me.drawingArea;
+
+ me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
+ me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top);
+ },
+
+ getIndexAngle: function(index) {
+ var angleMultiplier = (Math.PI * 2) / getValueCount(this);
+ var startAngle = this.chart.options && this.chart.options.startAngle ?
+ this.chart.options.startAngle :
+ 0;
+
+ var startAngleRadians = startAngle * Math.PI * 2 / 360;
+
+ // Start from the top instead of right, so remove a quarter of the circle
+ return index * angleMultiplier + startAngleRadians;
+ },
+ getDistanceFromCenterForValue: function(value) {
+ var me = this;
+
+ if (value === null) {
+ return 0; // null always in center
+ }
+
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = me.drawingArea / (me.max - me.min);
+ if (me.options.reverse) {
+ return (me.max - value) * scalingFactor;
+ }
+ return (value - me.min) * scalingFactor;
+ },
+ getPointPosition: function(index, distanceFromCenter) {
+ var me = this;
+ var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
+ return {
+ x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
+ y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
+ };
+ },
+ getPointPositionForValue: function(index, value) {
+ return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
+ },
+
+ getBasePosition: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.getPointPositionForValue(0,
+ me.beginAtZero? 0:
+ min < 0 && max < 0? max :
+ min > 0 && max > 0? min :
+ 0);
+ },
+
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var gridLineOpts = opts.gridLines;
+ var tickOpts = opts.ticks;
+ var getValueOrDefault = helpers.getValueOrDefault;
+
+ if (opts.display) {
+ var ctx = me.ctx;
+
+ // Tick Font
+ var tickFontSize = getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
+ var tickFontStyle = getValueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
+ var tickFontFamily = getValueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
+ var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
+
+ helpers.each(me.ticks, function(label, index) {
+ // Don't draw a centre value (if it is minimum)
+ if (index > 0 || opts.reverse) {
+ var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
+ var yHeight = me.yCenter - yCenterOffset;
+
+ // Draw circular lines around the scale
+ if (gridLineOpts.display && index !== 0) {
+ drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
+ }
+
+ if (tickOpts.display) {
+ var tickFontColor = getValueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
+ ctx.font = tickLabelFont;
+
+ if (tickOpts.showLabelBackdrop) {
+ var labelWidth = ctx.measureText(label).width;
+ ctx.fillStyle = tickOpts.backdropColor;
+ ctx.fillRect(
+ me.xCenter - labelWidth / 2 - tickOpts.backdropPaddingX,
+ yHeight - tickFontSize / 2 - tickOpts.backdropPaddingY,
+ labelWidth + tickOpts.backdropPaddingX * 2,
+ tickFontSize + tickOpts.backdropPaddingY * 2
+ );
+ }
+
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+ ctx.fillStyle = tickFontColor;
+ ctx.fillText(label, me.xCenter, yHeight);
+ }
+ }
+ });
+
+ if (opts.angleLines.display || opts.pointLabels.display) {
+ drawPointLabels(me);
+ }
+ }
+ }
+ });
+ Chart.scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig);
+
+ };
+
+},{}],49:[function(require,module,exports){
+ /* global window: false */
+ 'use strict';
+
+ var moment = require(1);
+ moment = typeof(moment) === 'function' ? moment : window.moment;
+
+ module.exports = function(Chart) {
+
+ var helpers = Chart.helpers;
+ var interval = {
+ millisecond: {
+ size: 1,
+ steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
+ },
+ second: {
+ size: 1000,
+ steps: [1, 2, 5, 10, 30]
+ },
+ minute: {
+ size: 60000,
+ steps: [1, 2, 5, 10, 30]
+ },
+ hour: {
+ size: 3600000,
+ steps: [1, 2, 3, 6, 12]
+ },
+ day: {
+ size: 86400000,
+ steps: [1, 2, 5]
+ },
+ week: {
+ size: 604800000,
+ maxStep: 4
+ },
+ month: {
+ size: 2.628e9,
+ maxStep: 3
+ },
+ quarter: {
+ size: 7.884e9,
+ maxStep: 4
+ },
+ year: {
+ size: 3.154e10,
+ maxStep: false
+ }
+ };
+
+ var defaultConfig = {
+ position: 'bottom',
+
+ time: {
+ parser: false, // false == a pattern string from http://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
+ format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
+ unit: false, // false == automatic or override with week, month, year, etc.
+ round: false, // none, or override with week, month, year, etc.
+ displayFormat: false, // DEPRECATED
+ isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
+ minUnit: 'millisecond',
+
+ // defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
+ displayFormats: {
+ millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM,
+ second: 'h:mm:ss a', // 11:20:01 AM
+ minute: 'h:mm:ss a', // 11:20:01 AM
+ hour: 'MMM D, hA', // Sept 4, 5PM
+ day: 'll', // Sep 4 2015
+ week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
+ month: 'MMM YYYY', // Sept 2015
+ quarter: '[Q]Q - YYYY', // Q3
+ year: 'YYYY' // 2015
+ },
+ },
+ ticks: {
+ autoSkip: false
+ }
+ };
+
+ /**
+ * Helper function to parse time to a moment object
+ * @param axis {TimeAxis} the time axis
+ * @param label {Date|string|number|Moment} The thing to parse
+ * @return {Moment} parsed time
+ */
+ function parseTime(axis, label) {
+ var timeOpts = axis.options.time;
+ if (typeof timeOpts.parser === 'string') {
+ return moment(label, timeOpts.parser);
+ }
+ if (typeof timeOpts.parser === 'function') {
+ return timeOpts.parser(label);
+ }
+ if (typeof label.getMonth === 'function' || typeof label === 'number') {
+ // Date objects
+ return moment(label);
+ }
+ if (label.isValid && label.isValid()) {
+ // Moment support
+ return label;
+ }
+ var format = timeOpts.format;
+ if (typeof format !== 'string' && format.call) {
+ // Custom parsing (return an instance of moment)
+ console.warn('options.time.format is deprecated and replaced by options.time.parser.');
+ return format(label);
+ }
+ // Moment format parsing
+ return moment(label, format);
+ }
+
+ /**
+ * Figure out which is the best unit for the scale
+ * @param minUnit {String} minimum unit to use
+ * @param min {Number} scale minimum
+ * @param max {Number} scale maximum
+ * @return {String} the unit to use
+ */
+ function determineUnit(minUnit, min, max, maxTicks) {
+ var units = Object.keys(interval);
+ var unit;
+ var numUnits = units.length;
+
+ for (var i = units.indexOf(minUnit); i < numUnits; i++) {
+ unit = units[i];
+ var unitDetails = interval[unit];
+ var steps = (unitDetails.steps && unitDetails.steps[unitDetails.steps.length - 1]) || unitDetails.maxStep;
+ if (steps === undefined || Math.ceil((max - min) / (steps * unitDetails.size)) <= maxTicks) {
+ break;
+ }
+ }
+
+ return unit;
+ }
+
+ /**
+ * Determines how we scale the unit
+ * @param min {Number} the scale minimum
+ * @param max {Number} the scale maximum
+ * @param unit {String} the unit determined by the {@see determineUnit} method
+ * @return {Number} the axis step size as a multiple of unit
+ */
+ function determineStepSize(min, max, unit, maxTicks) {
+ // Using our unit, figoure out what we need to scale as
+ var unitDefinition = interval[unit];
+ var unitSizeInMilliSeconds = unitDefinition.size;
+ var sizeInUnits = Math.ceil((max - min) / unitSizeInMilliSeconds);
+ var multiplier = 1;
+ var range = max - min;
+
+ if (unitDefinition.steps) {
+ // Have an array of steps
+ var numSteps = unitDefinition.steps.length;
+ for (var i = 0; i < numSteps && sizeInUnits > maxTicks; i++) {
+ multiplier = unitDefinition.steps[i];
+ sizeInUnits = Math.ceil(range / (unitSizeInMilliSeconds * multiplier));
+ }
+ } else {
+ while (sizeInUnits > maxTicks && maxTicks > 0) {
+ ++multiplier;
+ sizeInUnits = Math.ceil(range / (unitSizeInMilliSeconds * multiplier));
+ }
+ }
+
+ return multiplier;
+ }
+
+ /**
+ * Helper for generating axis labels.
+ * @param options {ITimeGeneratorOptions} the options for generation
+ * @param dataRange {IRange} the data range
+ * @param niceRange {IRange} the pretty range to display
+ * @return {Number[]} ticks
+ */
+ function generateTicks(options, dataRange, niceRange) {
+ var ticks = [];
+ if (options.maxTicks) {
+ var stepSize = options.stepSize;
+ ticks.push(options.min !== undefined ? options.min : niceRange.min);
+ var cur = moment(niceRange.min);
+ while (cur.add(stepSize, options.unit).valueOf() < niceRange.max) {
+ ticks.push(cur.valueOf());
+ }
+ var realMax = options.max || niceRange.max;
+ if (ticks[ticks.length - 1] !== realMax) {
+ ticks.push(realMax);
+ }
+ }
+ return ticks;
+ }
+
+ /**
+ * @function Chart.Ticks.generators.time
+ * @param options {ITimeGeneratorOptions} the options for generation
+ * @param dataRange {IRange} the data range
+ * @return {Number[]} ticks
+ */
+ Chart.Ticks.generators.time = function(options, dataRange) {
+ var niceMin;
+ var niceMax;
+ var isoWeekday = options.isoWeekday;
+ if (options.unit === 'week' && isoWeekday !== false) {
+ niceMin = moment(dataRange.min).startOf('isoWeek').isoWeekday(isoWeekday).valueOf();
+ niceMax = moment(dataRange.max).startOf('isoWeek').isoWeekday(isoWeekday);
+ if (dataRange.max - niceMax > 0) {
+ niceMax.add(1, 'week');
+ }
+ niceMax = niceMax.valueOf();
+ } else {
+ niceMin = moment(dataRange.min).startOf(options.unit).valueOf();
+ niceMax = moment(dataRange.max).startOf(options.unit);
+ if (dataRange.max - niceMax > 0) {
+ niceMax.add(1, options.unit);
+ }
+ niceMax = niceMax.valueOf();
+ }
+ return generateTicks(options, dataRange, {
+ min: niceMin,
+ max: niceMax
+ });
+ };
+
+ var TimeScale = Chart.Scale.extend({
+ initialize: function() {
+ if (!moment) {
+ throw new Error('Chart.js - Moment.js could not be found! You must include it before Chart.js to use the time scale. Download at https://momentjs.com');
+ }
+
+ Chart.Scale.prototype.initialize.call(this);
+ },
+ determineDataLimits: function() {
+ var me = this;
+ var timeOpts = me.options.time;
+
+ // We store the data range as unix millisecond timestamps so dataMin and dataMax will always be integers.
+ var dataMin = Number.MAX_SAFE_INTEGER;
+ var dataMax = Number.MIN_SAFE_INTEGER;
+
+ var chartData = me.chart.data;
+ var parsedData = {
+ labels: [],
+ datasets: []
+ };
+
+ var timestamp;
+
+ helpers.each(chartData.labels, function(label, labelIndex) {
+ var labelMoment = parseTime(me, label);
+
+ if (labelMoment.isValid()) {
+ // We need to round the time
+ if (timeOpts.round) {
+ labelMoment.startOf(timeOpts.round);
+ }
+
+ timestamp = labelMoment.valueOf();
+ dataMin = Math.min(timestamp, dataMin);
+ dataMax = Math.max(timestamp, dataMax);
+
+ // Store this value for later
+ parsedData.labels[labelIndex] = timestamp;
+ }
+ });
+
+ helpers.each(chartData.datasets, function(dataset, datasetIndex) {
+ var timestamps = [];
+
+ if (typeof dataset.data[0] === 'object' && dataset.data[0] !== null && me.chart.isDatasetVisible(datasetIndex)) {
+ // We have potential point data, so we need to parse this
+ helpers.each(dataset.data, function(value, dataIndex) {
+ var dataMoment = parseTime(me, me.getRightValue(value));
+
+ if (dataMoment.isValid()) {
+ if (timeOpts.round) {
+ dataMoment.startOf(timeOpts.round);
+ }
+
+ timestamp = dataMoment.valueOf();
+ dataMin = Math.min(timestamp, dataMin);
+ dataMax = Math.max(timestamp, dataMax);
+ timestamps[dataIndex] = timestamp;
+ }
+ });
+ } else {
+ // We have no x coordinates, so use the ones from the labels
+ timestamps = parsedData.labels.slice();
+ }
+
+ parsedData.datasets[datasetIndex] = timestamps;
+ });
+
+ me.dataMin = dataMin;
+ me.dataMax = dataMax;
+ me._parsedData = parsedData;
+ },
+ buildTicks: function() {
+ var me = this;
+ var timeOpts = me.options.time;
+
+ var minTimestamp;
+ var maxTimestamp;
+ var dataMin = me.dataMin;
+ var dataMax = me.dataMax;
+
+ if (timeOpts.min) {
+ var minMoment = parseTime(me, timeOpts.min);
+ if (timeOpts.round) {
+ minMoment.round(timeOpts.round);
+ }
+ minTimestamp = minMoment.valueOf();
+ }
+
+ if (timeOpts.max) {
+ maxTimestamp = parseTime(me, timeOpts.max).valueOf();
+ }
+
+ var maxTicks = me.getLabelCapacity(minTimestamp || dataMin);
+ var unit = timeOpts.unit || determineUnit(timeOpts.minUnit, minTimestamp || dataMin, maxTimestamp || dataMax, maxTicks);
+ me.displayFormat = timeOpts.displayFormats[unit];
+
+ var stepSize = timeOpts.stepSize || determineStepSize(minTimestamp || dataMin, maxTimestamp || dataMax, unit, maxTicks);
+ me.ticks = Chart.Ticks.generators.time({
+ maxTicks: maxTicks,
+ min: minTimestamp,
+ max: maxTimestamp,
+ stepSize: stepSize,
+ unit: unit,
+ isoWeekday: timeOpts.isoWeekday
+ }, {
+ min: dataMin,
+ max: dataMax
+ });
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers.max(me.ticks);
+ me.min = helpers.min(me.ticks);
+ },
+ // Get tooltip label
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var label = me.chart.data.labels && index < me.chart.data.labels.length ? me.chart.data.labels[index] : '';
+ var value = me.chart.data.datasets[datasetIndex].data[index];
+
+ if (value !== null && typeof value === 'object') {
+ label = me.getRightValue(value);
+ }
+
+ // Format nicely
+ if (me.options.time.tooltipFormat) {
+ label = parseTime(me, label).format(me.options.time.tooltipFormat);
+ }
+
+ return label;
+ },
+ // Function to format an individual tick mark
+ tickFormatFunction: function(tick, index, ticks) {
+ var formattedTick = tick.format(this.displayFormat);
+ var tickOpts = this.options.ticks;
+ var callback = helpers.getValueOrDefault(tickOpts.callback, tickOpts.userCallback);
+
+ if (callback) {
+ return callback(formattedTick, index, ticks);
+ }
+ return formattedTick;
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ me.ticksAsTimestamps = me.ticks;
+ me.ticks = me.ticks.map(function(tick) {
+ return moment(tick);
+ }).map(me.tickFormatFunction, me);
+ },
+ getPixelForOffset: function(offset) {
+ var me = this;
+ var epochWidth = me.max - me.min;
+ var decimal = epochWidth ? (offset - me.min) / epochWidth : 0;
+
+ if (me.isHorizontal()) {
+ var valueOffset = (me.width * decimal);
+ return me.left + Math.round(valueOffset);
+ }
+
+ var heightOffset = (me.height * decimal);
+ return me.top + Math.round(heightOffset);
+ },
+ getPixelForValue: function(value, index, datasetIndex) {
+ var me = this;
+ var offset = null;
+ if (index !== undefined && datasetIndex !== undefined) {
+ offset = me._parsedData.datasets[datasetIndex][index];
+ }
+
+ if (offset === null) {
+ if (!value || !value.isValid) {
+ // not already a moment object
+ value = parseTime(me, me.getRightValue(value));
+ }
+
+ if (value && value.isValid && value.isValid()) {
+ offset = value.valueOf();
+ }
+ }
+
+ if (offset !== null) {
+ return me.getPixelForOffset(offset);
+ }
+ },
+ getPixelForTick: function(index) {
+ return this.getPixelForOffset(this.ticksAsTimestamps[index]);
+ },
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var innerDimension = me.isHorizontal() ? me.width : me.height;
+ var offset = (pixel - (me.isHorizontal() ? me.left : me.top)) / innerDimension;
+ return moment(me.min + (offset * (me.max - me.min)));
+ },
+ // Crude approximation of what the label width might be
+ getLabelWidth: function(label) {
+ var me = this;
+ var ticks = me.options.ticks;
+
+ var tickLabelWidth = me.ctx.measureText(label).width;
+ var cosRotation = Math.cos(helpers.toRadians(ticks.maxRotation));
+ var sinRotation = Math.sin(helpers.toRadians(ticks.maxRotation));
+ var tickFontSize = helpers.getValueOrDefault(ticks.fontSize, Chart.defaults.global.defaultFontSize);
+ return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
+ },
+ getLabelCapacity: function(exampleTime) {
+ var me = this;
+
+ me.displayFormat = me.options.time.displayFormats.millisecond; // Pick the longest format for guestimation
+ var exampleLabel = me.tickFormatFunction(moment(exampleTime), 0, []);
+ var tickLabelWidth = me.getLabelWidth(exampleLabel);
+
+ var innerWidth = me.isHorizontal() ? me.width : me.height;
+ var labelCapacity = innerWidth / tickLabelWidth;
+ return labelCapacity;
+ }
+ });
+ Chart.scaleService.registerScaleType('time', TimeScale, defaultConfig);
+
+ };
},{"1":1}]},{},[7])(7)
});
\ No newline at end of file