web/gui/src/main/webapp/app/fw/svg/glyph.js

/*
 * Copyright 2015 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 -- SVG -- Glyph Service
 */
(function () {
    'use strict';

    // injected references
    var $log, fs, sus;

    // internal state
    var glyphs = d3.map();

    // ----------------------------------------------------------------------
    // Base set of Glyphs...

    var birdData = {
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        },

        glyphDataSet = {
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            refresh: 'M102.6,40.8L88.4,70.5L69.8,43.4L80,42.6c-0.7-2.3-1.7-' +
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            // --- Navigation glyphs ------------------------------------

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            // --- Topology toolbar specific glyphs ----------------------

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            "M16.3,41.2c-0.8-13.9,19.4-19.2,23.5-7.8" +
            "M38.9,30.9c5.1-9.4,15.1-8.5,16.9-1.3" +
            "M54.4,32.9c4-12.9,14.8-9.6,18.6-3.8" +
            "M95.8,58.5c10-4.1,11.7-17.8-0.9-19.8" +
            "M18.1,76.4C5.6,80.3,3.8,66,13.8,61.5" +
            "M16.2,62.4C2.1,58.4,3.5,36,16.8,36.6" +
            "M93.6,74.7c10.2-2,10.7-14,5.8-18.3" +
            "M71.1,79.3c11.2,7.6,24.6,6.4,22.1-11.7" +
            "M36.4,76.8c3.4,13.3,35.4,11.6,36.1-1.4" +
            "M70.4,31c11.8-10.4,26.2-5.2,24.7,10.1"
        };

    // ----------------------------------------------------------------------
    // === Constants

    var msgGS = 'GlyphService.',
        rg = "registerGlyphs(): ",
        rgs = "registerGlyphSet(): ";

    // ----------------------------------------------------------------------

    function warn(msg) {
        $log.warn(msgGS + msg);
    }

    function addToMap(key, value, vbox, overwrite, dups) {
        if (!overwrite && glyphs.get(key)) {
            dups.push(key);
        } else {
            glyphs.set(key, {id: key, vb: vbox, d: value});
        }
    }

    function reportDups(dups, which) {
        var ok = (dups.length == 0),
            msg = 'ID collision: ';

        if (!ok) {
            dups.forEach(function (id) {
                warn(which + msg + '"' + id + '"');
            });
        }
        return ok;
    }

    function reportMissVb(missing, which) {
        var ok = (missing.length == 0),
            msg = 'Missing viewbox property: ';

        if (!ok) {
            missing.forEach(function (vbk) {
                warn(which + msg + '"' + vbk + '"');
            });
        }
        return ok;
    }

    // ----------------------------------------------------------------------
    // === API functions ===

    function clear() {
        // start with a fresh map
        glyphs = d3.map();
    }

    function init() {
        clear();
        registerGlyphs(birdData);
        registerGlyphSet(glyphDataSet);
        registerGlyphSet(badgeDataSet);
        registerGlyphs(spriteData);
    }

    function registerGlyphs(data, overwrite) {
        var dups = [],
            missvb = [];

        angular.forEach(data, function (value, key) {
            var vbk = '_' + key,
                vb = data[vbk];

            if (key[0] !== '_') {
                if (!vb) {
                    missvb.push(vbk);
                    return;
                }
                addToMap(key, value, vb, overwrite, dups);
            }
        });
        return reportDups(dups, rg) && reportMissVb(missvb, rg);
    }

    function registerGlyphSet(data, overwrite) {
        var dups = [],
            vb = data._viewbox;

        if (!vb) {
            warn(rgs + 'no "_viewbox" property found');
            return false;
        }

        angular.forEach(data, function (value, key) {
            if (key[0] !== '_') {
                addToMap(key, value, vb, overwrite, dups);
            }
        });
        return reportDups(dups, rgs);
    }

    function ids() {
        return glyphs.keys();
    }

    function glyph(id) {
        return glyphs.get(id);
    }

    // Note: defs should be a D3 selection of a single <defs> element
    function loadDefs(defs, glyphIds, noClear) {
        var list = fs.isA(glyphIds) || ids(),
            clearCache = !noClear;

        if (clearCache) {
            // remove all existing content
            defs.html(null);
        }

        // load up the requested glyphs
        list.forEach(function (id) {
            var g = glyph(id);
            if (g) {
                if (noClear) {
                    // quick exit if symbol is already present
                    if (defs.select('symbol#' + g.id).size() > 0) {
                        return;
                    }
                }
                defs.append('symbol')
                    .attr({ id: g.id, viewBox: g.vb })
                    .append('path').attr('d', g.d);
            }
        });
    }

    // trans can specify translation [x,y]
    function addGlyph(elem, glyphId, size, overlay, trans) {
        var sz = size || 40,
            ovr = !!overlay,
            xns = fs.isA(trans),
            atr = {
                width: sz,
                height: sz,
                'class': 'glyph',
                'xlink:href': '#' + glyphId
            };

        if (xns) {
            atr.transform = sus.translate(trans);
        }
        return elem.append('use').attr(atr).classed('overlay', ovr);
    }

    // ----------------------------------------------------------------------

    angular.module('onosSvg')
    .factory('GlyphService',
        ['$log', 'FnService', 'SvgUtilService',

        function (_$log_, _fs_, _sus_) {
            $log = _$log_;
            fs = _fs_;
            sus = _sus_;

            return {
                clear: clear,
                init: init,
                registerGlyphs: registerGlyphs,
                registerGlyphSet: registerGlyphSet,
                ids: ids,
                glyph: glyph,
                loadDefs: loadDefs,
                addGlyph: addGlyph
            };
        }]
    );

}());