| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| ONOS GUI -- Topology Layout Module. |
| Module that contains the d3.force.layout logic |
| */ |
| |
| (function () { |
| 'use strict'; |
| |
| var $log, wss, sus, t2rs, t2d3, t2vs, t2ss; |
| |
| var linkG, linkLabelG, nodeG; |
| var link, node, zoomer; |
| |
| // default settings for force layout |
| var defaultSettings = { |
| gravity: 0.4, |
| friction: 0.7, |
| charge: { |
| // note: key is node.class |
| device: -8000, |
| host: -20000, |
| region: -5000, |
| _def_: -12000 |
| }, |
| linkDistance: { |
| // note: key is link.type |
| direct: 100, |
| optical: 120, |
| UiEdgeLink: 30, |
| _def_: 50 |
| }, |
| linkStrength: { |
| // note: key is link.type |
| // range: {0.0 ... 1.0} |
| direct: 1.0, |
| optical: 1.0, |
| UiEdgeLink: 15.0, |
| _def_: 1.0 |
| } |
| }; |
| |
| // configuration |
| var linkConfig = { |
| light: { |
| baseColor: '#939598', |
| inColor: '#66f', |
| outColor: '#f00' |
| }, |
| dark: { |
| // TODO : theme |
| baseColor: '#939598', |
| inColor: '#66f', |
| outColor: '#f00' |
| }, |
| inWidth: 12, |
| outWidth: 10 |
| }; |
| |
| // internal state |
| var settings, // merged default settings and options |
| force, // force layout object |
| drag, // drag behavior handler |
| previousNearestLink, // previous link to mouse position |
| nodeLock = false; // whether nodes can be dragged or not (locked) |
| |
| |
| function init(_svg_, forceG, _uplink_, _dim_, _zoomer_, opts) { |
| |
| $log.debug("Initialising Topology Layout"); |
| settings = angular.extend({}, defaultSettings, opts); |
| |
| linkG = forceG.append('g').attr('id', 'topo-links'); |
| linkLabelG = forceG.append('g').attr('id', 'topo-linkLabels'); |
| forceG.append('g').attr('id', 'topo-numLinkLabels'); |
| nodeG = forceG.append('g').attr('id', 'topo-nodes'); |
| forceG.append('g').attr('id', 'topo-portLabels'); |
| |
| link = linkG.selectAll('.link'); |
| linkLabelG.selectAll('.linkLabel'); |
| node = nodeG.selectAll('.node'); |
| |
| zoomer = _zoomer_; |
| _svg_.on('mousemove', mouseMoveHandler); |
| _svg_.on('click', mouseClickHandler); |
| } |
| |
| function getDeviceChargeForType(node) { |
| |
| var nodeType = node.get('nodeType'); |
| |
| return settings.charge[nodeType] || |
| settings.charge._def_; |
| } |
| |
| function getLinkDistanceForLinkType(node) { |
| var nodeType = node.get('type'); |
| |
| return settings.linkDistance[nodeType] || |
| settings.linkDistance._def_; |
| } |
| |
| function getLinkStrenghForLinkType(node) { |
| var nodeType = node.get('type'); |
| |
| return settings.linkStrength[nodeType] || |
| settings.linkStrength._def_; |
| } |
| |
| function createForceLayout() { |
| |
| var regionLinks = t2rs.regionLinks(), |
| regionNodes = t2rs.regionNodes(); |
| |
| force = d3.layout.force() |
| .size(t2vs.getDimensions()) |
| .gravity(settings.gravity) |
| .friction(settings.friction) |
| .charge(getDeviceChargeForType) |
| .linkDistance(getLinkDistanceForLinkType) |
| .linkStrength(getLinkStrenghForLinkType) |
| .on("tick", tick); |
| |
| force |
| .nodes(t2rs.regionNodes()) |
| .links(regionLinks) |
| .start(); |
| |
| link = linkG.selectAll('.link') |
| .data(regionLinks, function (d) { return d.get('key'); }); |
| |
| node = nodeG.selectAll('.node') |
| .data(regionNodes, function (d) { return d.get('id'); }); |
| |
| drag = sus.createDragBehavior(force, |
| t2ss.selectObject, atDragEnd, dragEnabled, clickEnabled); |
| |
| update(); |
| } |
| |
| // predicate that indicates when clicking is active |
| function clickEnabled() { |
| return true; |
| } |
| |
| function zoomingOrPanning(ev) { |
| return ev.metaKey || ev.altKey; |
| } |
| |
| function atDragEnd(d) { |
| // once we've finished moving, pin the node in position |
| d.fixed = true; |
| d3.select(this).classed('fixed', true); |
| sendUpdateMeta(d); |
| $log.debug(d); |
| t2ss.clickConsumed(true); |
| } |
| |
| // predicate that indicates when dragging is active |
| function dragEnabled() { |
| var ev = d3.event.sourceEvent; |
| // nodeLock means we aren't allowing nodes to be dragged... |
| return !nodeLock && !zoomingOrPanning(ev); |
| } |
| |
| function sendUpdateMeta(d, clearPos) { |
| var metaUi = {}, |
| ll; |
| |
| // if we are not clearing the position data (unpinning), |
| // attach the x, y, (and equivalent longitude, latitude)... |
| if (!clearPos) { |
| ll = d.lngLatFromCoord([d.x, d.y]); |
| metaUi = { |
| x: d.x, |
| y: d.y, |
| equivLoc: { |
| lng: ll[0], |
| lat: ll[1] |
| } |
| }; |
| } |
| d.metaUi = metaUi; |
| wss.sendEvent('updateMeta2', { |
| id: d.get('id'), |
| class: d.get('class'), |
| memento: metaUi |
| }); |
| } |
| |
| function tick() { |
| link |
| .attr("x1", function (d) { return d.source.x; }) |
| .attr("y1", function (d) { return d.source.y; }) |
| .attr("x2", function (d) { return d.target.x; }) |
| .attr("y2", function (d) { return d.target.y; }); |
| |
| node |
| .attr({ |
| transform: function (d) { |
| var dx = isNaN(d.x) ? 0 : d.x, |
| dy = isNaN(d.y) ? 0 : d.y; |
| return sus.translate(dx, dy); |
| } |
| }); |
| } |
| |
| function update() { |
| _updateNodes(); |
| _updateLinks(); |
| } |
| |
| function _updateNodes() { |
| |
| var regionNodes = t2rs.regionNodes(); |
| |
| // select all the nodes in the layout: |
| node = nodeG.selectAll('.node') |
| .data(regionNodes, function (d) { return d.get('id'); }); |
| |
| var entering = node.enter() |
| .append('g') |
| .attr({ |
| id: function (d) { return sus.safeId(d.get('id')); }, |
| class: function (d) { return d.svgClassName(); }, |
| transform: function (d) { |
| // Need to guard against NaN here ?? |
| return sus.translate(d.node.x, d.node.y); |
| }, |
| opacity: 0 |
| }) |
| .call(drag) |
| .transition() |
| .attr('opacity', 1); |
| |
| entering.filter('.device').each(t2d3.nodeEnter); |
| entering.filter('.sub-region').each(t2d3.nodeEnter); |
| entering.filter('.host').each(t2d3.hostEnter); |
| |
| // operate on exiting nodes: |
| // Note that the node is removed after 2 seconds. |
| // Sub element animations should be shorter than 2 seconds. |
| var exiting = node.exit() |
| .transition() |
| .duration(300) |
| .style('opacity', 0) |
| .remove(); |
| |
| // exiting node specifics: |
| // exiting.filter('.host').each(t2d3.hostExit); |
| exiting.filter('.device').each(t2d3.nodeExit); |
| } |
| |
| function _updateLinks() { |
| |
| // var th = ts.theme(); |
| var regionLinks = t2rs.regionLinks(); |
| |
| link = linkG.selectAll('.link') |
| .data(regionLinks, function (d) { return d.get('key'); }); |
| |
| // operate on entering links: |
| var entering = link.enter() |
| .append('line') |
| .call(calcPosition) |
| .attr({ |
| x1: function (d) { return d.get('position').x1; }, |
| y1: function (d) { return d.get('position').y1; }, |
| x2: function (d) { return d.get('position').x2; }, |
| y2: function (d) { return d.get('position').y2; }, |
| stroke: linkConfig.light.inColor, |
| 'stroke-width': linkConfig.inWidth |
| }); |
| |
| entering.each(t2d3.linkEntering); |
| |
| // operate on exiting links: |
| link.exit() |
| .style('opacity', 1) |
| .transition() |
| .duration(300) |
| .style('opacity', 0.0) |
| .remove(); |
| } |
| |
| function calcPosition() { |
| var lines = this; |
| |
| lines.each(function (d) { |
| if (d.get('type') === 'hostLink') { |
| d.set('position', getDefaultPos(d)); |
| } |
| }); |
| |
| lines.each(function (d) { |
| d.set('position', getDefaultPos(d)); |
| }); |
| } |
| |
| function getDefaultPos(link) { |
| return { |
| x1: link.get('source').x, |
| y1: link.get('source').y, |
| x2: link.get('target').x, |
| y2: link.get('target').y |
| }; |
| } |
| |
| function setDimensions() { |
| if (force) { |
| force.size(t2vs.getDimensions()); |
| } |
| } |
| |
| function start() { |
| force.start(); |
| } |
| |
| function mouseClickHandler() { |
| |
| if (!d3.event.shiftKey) { |
| t2rs.deselectLink(); |
| } |
| |
| if (!t2ss.clickConsumed()) { |
| if (previousNearestLink) { |
| previousNearestLink.select(); |
| } |
| } |
| |
| } |
| |
| // Select Links |
| function mouseMoveHandler() { |
| var mp = getLogicalMousePosition(this), |
| link = computeNearestLink(mp); |
| |
| // link.enhance(); |
| if (link) { |
| if (previousNearestLink && previousNearestLink != link) { |
| previousNearestLink.unenhance(); |
| } |
| link.enhance(); |
| } else { |
| if (previousNearestLink) { |
| previousNearestLink.unenhance(); |
| } |
| } |
| |
| previousNearestLink = link; |
| } |
| |
| |
| function getLogicalMousePosition(container) { |
| var m = d3.mouse(container), |
| sc = zoomer.scale(), |
| tr = zoomer.translate(), |
| mx = (m[0] - tr[0]) / sc, |
| my = (m[1] - tr[1]) / sc; |
| return {x: mx, y: my}; |
| } |
| |
| function sq(x) { return x * x; } |
| |
| function mdist(p, m) { |
| return Math.sqrt(sq(p.x - m.x) + sq(p.y - m.y)); |
| } |
| |
| function prox(dist) { |
| return dist / zoomer.scale(); |
| } |
| |
| function computeNearestLink(mouse) { |
| var proximity = prox(30), |
| nearest = null, |
| minDist; |
| |
| function pdrop(line, mouse) { |
| var x1 = line.x1, |
| y1 = line.y1, |
| x2 = line.x2, |
| y2 = line.y2, |
| x3 = mouse.x, |
| y3 = mouse.y, |
| k = ((y2-y1) * (x3-x1) - (x2-x1) * (y3-y1)) / |
| (sq(y2-y1) + sq(x2-x1)), |
| x4 = x3 - k * (y2-y1), |
| y4 = y3 + k * (x2-x1); |
| return {x:x4, y:y4}; |
| } |
| |
| function lineHit(line, p, m) { |
| if (p.x < line.x1 && p.x < line.x2) return false; |
| if (p.x > line.x1 && p.x > line.x2) return false; |
| if (p.y < line.y1 && p.y < line.y2) return false; |
| if (p.y > line.y1 && p.y > line.y2) return false; |
| // line intersects, but are we close enough? |
| return mdist(p, m) <= proximity; |
| } |
| |
| var links = t2rs.regionLinks(); |
| |
| if (links.length) { |
| minDist = proximity * 2; |
| |
| links.forEach(function (d) { |
| var line = d.get('position'), |
| point, |
| hit, |
| dist; |
| |
| // TODO: Reinstate when showHost() is implemented |
| // if (!api.showHosts() && d.type() === 'hostLink') { |
| // return; // skip hidden host links |
| // } |
| |
| if (line) { |
| point = pdrop(line, mouse); |
| hit = lineHit(line, point, mouse); |
| if (hit) { |
| dist = mdist(point, mouse); |
| if (dist < minDist) { |
| minDist = dist; |
| nearest = d; |
| } |
| } |
| } |
| }); |
| } |
| |
| return nearest; |
| } |
| |
| angular.module('ovTopo2') |
| .factory('Topo2LayoutService', |
| [ |
| '$log', 'WebSocketService', 'SvgUtilService', 'Topo2RegionService', |
| 'Topo2D3Service', 'Topo2ViewService', 'Topo2SelectService', |
| |
| function (_$log_, _wss_, _sus_, _t2rs_, _t2d3_, _t2vs_, _t2ss_) { |
| |
| $log = _$log_; |
| wss = _wss_; |
| t2rs = _t2rs_; |
| t2d3 = _t2d3_; |
| t2vs = _t2vs_; |
| t2ss = _t2ss_; |
| sus = _sus_; |
| |
| return { |
| init: init, |
| createForceLayout: createForceLayout, |
| update: update, |
| tick: tick, |
| start: start, |
| |
| setDimensions: setDimensions |
| }; |
| } |
| ] |
| ); |
| })(); |