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Posted to commits@usergrid.apache.org by sn...@apache.org on 2014/01/28 21:22:00 UTC
[29/79] [abbrv] [partial] updated to latest Angular-based admin portal
http://git-wip-us.apache.org/repos/asf/incubator-usergrid/blob/508ef2f7/portal/js/libs/Highcharts-2.3.5/js/modules/canvas-tools.src.js
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diff --git a/portal/js/libs/Highcharts-2.3.5/js/modules/canvas-tools.src.js b/portal/js/libs/Highcharts-2.3.5/js/modules/canvas-tools.src.js
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+/**
+ * @license A class to parse color values
+ * @author Stoyan Stefanov <ss...@gmail.com>
+ * @link http://www.phpied.com/rgb-color-parser-in-javascript/
+ * Use it if you like it
+ *
+ */
+function RGBColor(color_string)
+{
+ this.ok = false;
+
+ // strip any leading #
+ if (color_string.charAt(0) == '#') { // remove # if any
+ color_string = color_string.substr(1,6);
+ }
+
+ color_string = color_string.replace(/ /g,'');
+ color_string = color_string.toLowerCase();
+
+ // before getting into regexps, try simple matches
+ // and overwrite the input
+ var simple_colors = {
+ aliceblue: 'f0f8ff',
+ antiquewhite: 'faebd7',
+ aqua: '00ffff',
+ aquamarine: '7fffd4',
+ azure: 'f0ffff',
+ beige: 'f5f5dc',
+ bisque: 'ffe4c4',
+ black: '000000',
+ blanchedalmond: 'ffebcd',
+ blue: '0000ff',
+ blueviolet: '8a2be2',
+ brown: 'a52a2a',
+ burlywood: 'deb887',
+ cadetblue: '5f9ea0',
+ chartreuse: '7fff00',
+ chocolate: 'd2691e',
+ coral: 'ff7f50',
+ cornflowerblue: '6495ed',
+ cornsilk: 'fff8dc',
+ crimson: 'dc143c',
+ cyan: '00ffff',
+ darkblue: '00008b',
+ darkcyan: '008b8b',
+ darkgoldenrod: 'b8860b',
+ darkgray: 'a9a9a9',
+ darkgreen: '006400',
+ darkkhaki: 'bdb76b',
+ darkmagenta: '8b008b',
+ darkolivegreen: '556b2f',
+ darkorange: 'ff8c00',
+ darkorchid: '9932cc',
+ darkred: '8b0000',
+ darksalmon: 'e9967a',
+ darkseagreen: '8fbc8f',
+ darkslateblue: '483d8b',
+ darkslategray: '2f4f4f',
+ darkturquoise: '00ced1',
+ darkviolet: '9400d3',
+ deeppink: 'ff1493',
+ deepskyblue: '00bfff',
+ dimgray: '696969',
+ dodgerblue: '1e90ff',
+ feldspar: 'd19275',
+ firebrick: 'b22222',
+ floralwhite: 'fffaf0',
+ forestgreen: '228b22',
+ fuchsia: 'ff00ff',
+ gainsboro: 'dcdcdc',
+ ghostwhite: 'f8f8ff',
+ gold: 'ffd700',
+ goldenrod: 'daa520',
+ gray: '808080',
+ green: '008000',
+ greenyellow: 'adff2f',
+ honeydew: 'f0fff0',
+ hotpink: 'ff69b4',
+ indianred : 'cd5c5c',
+ indigo : '4b0082',
+ ivory: 'fffff0',
+ khaki: 'f0e68c',
+ lavender: 'e6e6fa',
+ lavenderblush: 'fff0f5',
+ lawngreen: '7cfc00',
+ lemonchiffon: 'fffacd',
+ lightblue: 'add8e6',
+ lightcoral: 'f08080',
+ lightcyan: 'e0ffff',
+ lightgoldenrodyellow: 'fafad2',
+ lightgrey: 'd3d3d3',
+ lightgreen: '90ee90',
+ lightpink: 'ffb6c1',
+ lightsalmon: 'ffa07a',
+ lightseagreen: '20b2aa',
+ lightskyblue: '87cefa',
+ lightslateblue: '8470ff',
+ lightslategray: '778899',
+ lightsteelblue: 'b0c4de',
+ lightyellow: 'ffffe0',
+ lime: '00ff00',
+ limegreen: '32cd32',
+ linen: 'faf0e6',
+ magenta: 'ff00ff',
+ maroon: '800000',
+ mediumaquamarine: '66cdaa',
+ mediumblue: '0000cd',
+ mediumorchid: 'ba55d3',
+ mediumpurple: '9370d8',
+ mediumseagreen: '3cb371',
+ mediumslateblue: '7b68ee',
+ mediumspringgreen: '00fa9a',
+ mediumturquoise: '48d1cc',
+ mediumvioletred: 'c71585',
+ midnightblue: '191970',
+ mintcream: 'f5fffa',
+ mistyrose: 'ffe4e1',
+ moccasin: 'ffe4b5',
+ navajowhite: 'ffdead',
+ navy: '000080',
+ oldlace: 'fdf5e6',
+ olive: '808000',
+ olivedrab: '6b8e23',
+ orange: 'ffa500',
+ orangered: 'ff4500',
+ orchid: 'da70d6',
+ palegoldenrod: 'eee8aa',
+ palegreen: '98fb98',
+ paleturquoise: 'afeeee',
+ palevioletred: 'd87093',
+ papayawhip: 'ffefd5',
+ peachpuff: 'ffdab9',
+ peru: 'cd853f',
+ pink: 'ffc0cb',
+ plum: 'dda0dd',
+ powderblue: 'b0e0e6',
+ purple: '800080',
+ red: 'ff0000',
+ rosybrown: 'bc8f8f',
+ royalblue: '4169e1',
+ saddlebrown: '8b4513',
+ salmon: 'fa8072',
+ sandybrown: 'f4a460',
+ seagreen: '2e8b57',
+ seashell: 'fff5ee',
+ sienna: 'a0522d',
+ silver: 'c0c0c0',
+ skyblue: '87ceeb',
+ slateblue: '6a5acd',
+ slategray: '708090',
+ snow: 'fffafa',
+ springgreen: '00ff7f',
+ steelblue: '4682b4',
+ tan: 'd2b48c',
+ teal: '008080',
+ thistle: 'd8bfd8',
+ tomato: 'ff6347',
+ turquoise: '40e0d0',
+ violet: 'ee82ee',
+ violetred: 'd02090',
+ wheat: 'f5deb3',
+ white: 'ffffff',
+ whitesmoke: 'f5f5f5',
+ yellow: 'ffff00',
+ yellowgreen: '9acd32'
+ };
+ for (var key in simple_colors) {
+ if (color_string == key) {
+ color_string = simple_colors[key];
+ }
+ }
+ // emd of simple type-in colors
+
+ // array of color definition objects
+ var color_defs = [
+ {
+ re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
+ example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
+ process: function (bits){
+ return [
+ parseInt(bits[1]),
+ parseInt(bits[2]),
+ parseInt(bits[3])
+ ];
+ }
+ },
+ {
+ re: /^(\w{2})(\w{2})(\w{2})$/,
+ example: ['#00ff00', '336699'],
+ process: function (bits){
+ return [
+ parseInt(bits[1], 16),
+ parseInt(bits[2], 16),
+ parseInt(bits[3], 16)
+ ];
+ }
+ },
+ {
+ re: /^(\w{1})(\w{1})(\w{1})$/,
+ example: ['#fb0', 'f0f'],
+ process: function (bits){
+ return [
+ parseInt(bits[1] + bits[1], 16),
+ parseInt(bits[2] + bits[2], 16),
+ parseInt(bits[3] + bits[3], 16)
+ ];
+ }
+ }
+ ];
+
+ // search through the definitions to find a match
+ for (var i = 0; i < color_defs.length; i++) {
+ var re = color_defs[i].re;
+ var processor = color_defs[i].process;
+ var bits = re.exec(color_string);
+ if (bits) {
+ channels = processor(bits);
+ this.r = channels[0];
+ this.g = channels[1];
+ this.b = channels[2];
+ this.ok = true;
+ }
+
+ }
+
+ // validate/cleanup values
+ this.r = (this.r < 0 || isNaN(this.r)) ? 0 : ((this.r > 255) ? 255 : this.r);
+ this.g = (this.g < 0 || isNaN(this.g)) ? 0 : ((this.g > 255) ? 255 : this.g);
+ this.b = (this.b < 0 || isNaN(this.b)) ? 0 : ((this.b > 255) ? 255 : this.b);
+
+ // some getters
+ this.toRGB = function () {
+ return 'rgb(' + this.r + ', ' + this.g + ', ' + this.b + ')';
+ }
+ this.toHex = function () {
+ var r = this.r.toString(16);
+ var g = this.g.toString(16);
+ var b = this.b.toString(16);
+ if (r.length == 1) r = '0' + r;
+ if (g.length == 1) g = '0' + g;
+ if (b.length == 1) b = '0' + b;
+ return '#' + r + g + b;
+ }
+
+ // help
+ this.getHelpXML = function () {
+
+ var examples = new Array();
+ // add regexps
+ for (var i = 0; i < color_defs.length; i++) {
+ var example = color_defs[i].example;
+ for (var j = 0; j < example.length; j++) {
+ examples[examples.length] = example[j];
+ }
+ }
+ // add type-in colors
+ for (var sc in simple_colors) {
+ examples[examples.length] = sc;
+ }
+
+ var xml = document.createElement('ul');
+ xml.setAttribute('id', 'rgbcolor-examples');
+ for (var i = 0; i < examples.length; i++) {
+ try {
+ var list_item = document.createElement('li');
+ var list_color = new RGBColor(examples[i]);
+ var example_div = document.createElement('div');
+ example_div.style.cssText =
+ 'margin: 3px; '
+ + 'border: 1px solid black; '
+ + 'background:' + list_color.toHex() + '; '
+ + 'color:' + list_color.toHex()
+ ;
+ example_div.appendChild(document.createTextNode('test'));
+ var list_item_value = document.createTextNode(
+ ' ' + examples[i] + ' -> ' + list_color.toRGB() + ' -> ' + list_color.toHex()
+ );
+ list_item.appendChild(example_div);
+ list_item.appendChild(list_item_value);
+ xml.appendChild(list_item);
+
+ } catch(e){}
+ }
+ return xml;
+
+ }
+
+}
+
+/**
+ * @license canvg.js - Javascript SVG parser and renderer on Canvas
+ * MIT Licensed
+ * Gabe Lerner (gabelerner@gmail.com)
+ * http://code.google.com/p/canvg/
+ *
+ * Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
+ *
+ */
+if(!window.console) {
+ window.console = {};
+ window.console.log = function(str) {};
+ window.console.dir = function(str) {};
+}
+
+if(!Array.prototype.indexOf){
+ Array.prototype.indexOf = function(obj){
+ for(var i=0; i<this.length; i++){
+ if(this[i]==obj){
+ return i;
+ }
+ }
+ return -1;
+ }
+}
+
+(function(){
+ // canvg(target, s)
+ // empty parameters: replace all 'svg' elements on page with 'canvas' elements
+ // target: canvas element or the id of a canvas element
+ // s: svg string, url to svg file, or xml document
+ // opts: optional hash of options
+ // ignoreMouse: true => ignore mouse events
+ // ignoreAnimation: true => ignore animations
+ // ignoreDimensions: true => does not try to resize canvas
+ // ignoreClear: true => does not clear canvas
+ // offsetX: int => draws at a x offset
+ // offsetY: int => draws at a y offset
+ // scaleWidth: int => scales horizontally to width
+ // scaleHeight: int => scales vertically to height
+ // renderCallback: function => will call the function after the first render is completed
+ // forceRedraw: function => will call the function on every frame, if it returns true, will redraw
+ this.canvg = function (target, s, opts) {
+ // no parameters
+ if (target == null && s == null && opts == null) {
+ var svgTags = document.getElementsByTagName('svg');
+ for (var i=0; i<svgTags.length; i++) {
+ var svgTag = svgTags[i];
+ var c = document.createElement('canvas');
+ c.width = svgTag.clientWidth;
+ c.height = svgTag.clientHeight;
+ svgTag.parentNode.insertBefore(c, svgTag);
+ svgTag.parentNode.removeChild(svgTag);
+ var div = document.createElement('div');
+ div.appendChild(svgTag);
+ canvg(c, div.innerHTML);
+ }
+ return;
+ }
+ opts = opts || {};
+
+ if (typeof target == 'string') {
+ target = document.getElementById(target);
+ }
+
+ // reuse class per canvas
+ var svg;
+ if (target.svg == null) {
+ svg = build();
+ target.svg = svg;
+ }
+ else {
+ svg = target.svg;
+ svg.stop();
+ }
+ svg.opts = opts;
+
+ var ctx = target.getContext('2d');
+ if (typeof(s.documentElement) != 'undefined') {
+ // load from xml doc
+ svg.loadXmlDoc(ctx, s);
+ }
+ else if (s.substr(0,1) == '<') {
+ // load from xml string
+ svg.loadXml(ctx, s);
+ }
+ else {
+ // load from url
+ svg.load(ctx, s);
+ }
+ }
+
+ function build() {
+ var svg = { };
+
+ svg.FRAMERATE = 30;
+ svg.MAX_VIRTUAL_PIXELS = 30000;
+
+ // globals
+ svg.init = function(ctx) {
+ svg.Definitions = {};
+ svg.Styles = {};
+ svg.Animations = [];
+ svg.Images = [];
+ svg.ctx = ctx;
+ svg.ViewPort = new (function () {
+ this.viewPorts = [];
+ this.Clear = function() { this.viewPorts = []; }
+ this.SetCurrent = function(width, height) { this.viewPorts.push({ width: width, height: height }); }
+ this.RemoveCurrent = function() { this.viewPorts.pop(); }
+ this.Current = function() { return this.viewPorts[this.viewPorts.length - 1]; }
+ this.width = function() { return this.Current().width; }
+ this.height = function() { return this.Current().height; }
+ this.ComputeSize = function(d) {
+ if (d != null && typeof(d) == 'number') return d;
+ if (d == 'x') return this.width();
+ if (d == 'y') return this.height();
+ return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
+ }
+ });
+ }
+ svg.init();
+
+ // images loaded
+ svg.ImagesLoaded = function() {
+ for (var i=0; i<svg.Images.length; i++) {
+ if (!svg.Images[i].loaded) return false;
+ }
+ return true;
+ }
+
+ // trim
+ svg.trim = function(s) { return s.replace(/^\s+|\s+$/g, ''); }
+
+ // compress spaces
+ svg.compressSpaces = function(s) { return s.replace(/[\s\r\t\n]+/gm,' '); }
+
+ // ajax
+ svg.ajax = function(url) {
+ var AJAX;
+ if(window.XMLHttpRequest){AJAX=new XMLHttpRequest();}
+ else{AJAX=new ActiveXObject('Microsoft.XMLHTTP');}
+ if(AJAX){
+ AJAX.open('GET',url,false);
+ AJAX.send(null);
+ return AJAX.responseText;
+ }
+ return null;
+ }
+
+ // parse xml
+ svg.parseXml = function(xml) {
+ if (window.DOMParser)
+ {
+ var parser = new DOMParser();
+ return parser.parseFromString(xml, 'text/xml');
+ }
+ else
+ {
+ xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
+ var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
+ xmlDoc.async = 'false';
+ xmlDoc.loadXML(xml);
+ return xmlDoc;
+ }
+ }
+
+ svg.Property = function(name, value) {
+ this.name = name;
+ this.value = value;
+
+ this.hasValue = function() {
+ return (this.value != null && this.value !== '');
+ }
+
+ // return the numerical value of the property
+ this.numValue = function() {
+ if (!this.hasValue()) return 0;
+
+ var n = parseFloat(this.value);
+ if ((this.value + '').match(/%$/)) {
+ n = n / 100.0;
+ }
+ return n;
+ }
+
+ this.valueOrDefault = function(def) {
+ if (this.hasValue()) return this.value;
+ return def;
+ }
+
+ this.numValueOrDefault = function(def) {
+ if (this.hasValue()) return this.numValue();
+ return def;
+ }
+
+ /* EXTENSIONS */
+ var that = this;
+
+ // color extensions
+ this.Color = {
+ // augment the current color value with the opacity
+ addOpacity: function(opacity) {
+ var newValue = that.value;
+ if (opacity != null && opacity != '') {
+ var color = new RGBColor(that.value);
+ if (color.ok) {
+ newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacity + ')';
+ }
+ }
+ return new svg.Property(that.name, newValue);
+ }
+ }
+
+ // definition extensions
+ this.Definition = {
+ // get the definition from the definitions table
+ getDefinition: function() {
+ var name = that.value.replace(/^(url\()?#([^\)]+)\)?$/, '$2');
+ return svg.Definitions[name];
+ },
+
+ isUrl: function() {
+ return that.value.indexOf('url(') == 0
+ },
+
+ getFillStyle: function(e) {
+ var def = this.getDefinition();
+
+ // gradient
+ if (def != null && def.createGradient) {
+ return def.createGradient(svg.ctx, e);
+ }
+
+ // pattern
+ if (def != null && def.createPattern) {
+ return def.createPattern(svg.ctx, e);
+ }
+
+ return null;
+ }
+ }
+
+ // length extensions
+ this.Length = {
+ DPI: function(viewPort) {
+ return 96.0; // TODO: compute?
+ },
+
+ EM: function(viewPort) {
+ var em = 12;
+
+ var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
+ if (fontSize.hasValue()) em = fontSize.Length.toPixels(viewPort);
+
+ return em;
+ },
+
+ // get the length as pixels
+ toPixels: function(viewPort) {
+ if (!that.hasValue()) return 0;
+ var s = that.value+'';
+ if (s.match(/em$/)) return that.numValue() * this.EM(viewPort);
+ if (s.match(/ex$/)) return that.numValue() * this.EM(viewPort) / 2.0;
+ if (s.match(/px$/)) return that.numValue();
+ if (s.match(/pt$/)) return that.numValue() * 1.25;
+ if (s.match(/pc$/)) return that.numValue() * 15;
+ if (s.match(/cm$/)) return that.numValue() * this.DPI(viewPort) / 2.54;
+ if (s.match(/mm$/)) return that.numValue() * this.DPI(viewPort) / 25.4;
+ if (s.match(/in$/)) return that.numValue() * this.DPI(viewPort);
+ if (s.match(/%$/)) return that.numValue() * svg.ViewPort.ComputeSize(viewPort);
+ return that.numValue();
+ }
+ }
+
+ // time extensions
+ this.Time = {
+ // get the time as milliseconds
+ toMilliseconds: function() {
+ if (!that.hasValue()) return 0;
+ var s = that.value+'';
+ if (s.match(/s$/)) return that.numValue() * 1000;
+ if (s.match(/ms$/)) return that.numValue();
+ return that.numValue();
+ }
+ }
+
+ // angle extensions
+ this.Angle = {
+ // get the angle as radians
+ toRadians: function() {
+ if (!that.hasValue()) return 0;
+ var s = that.value+'';
+ if (s.match(/deg$/)) return that.numValue() * (Math.PI / 180.0);
+ if (s.match(/grad$/)) return that.numValue() * (Math.PI / 200.0);
+ if (s.match(/rad$/)) return that.numValue();
+ return that.numValue() * (Math.PI / 180.0);
+ }
+ }
+ }
+
+ // fonts
+ svg.Font = new (function() {
+ this.Styles = ['normal','italic','oblique','inherit'];
+ this.Variants = ['normal','small-caps','inherit'];
+ this.Weights = ['normal','bold','bolder','lighter','100','200','300','400','500','600','700','800','900','inherit'];
+
+ this.CreateFont = function(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
+ var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
+ return {
+ fontFamily: fontFamily || f.fontFamily,
+ fontSize: fontSize || f.fontSize,
+ fontStyle: fontStyle || f.fontStyle,
+ fontWeight: fontWeight || f.fontWeight,
+ fontVariant: fontVariant || f.fontVariant,
+ toString: function () { return [this.fontStyle, this.fontVariant, this.fontWeight, this.fontSize, this.fontFamily].join(' ') }
+ }
+ }
+
+ var that = this;
+ this.Parse = function(s) {
+ var f = {};
+ var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
+ var set = { fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false }
+ var ff = '';
+ for (var i=0; i<d.length; i++) {
+ if (!set.fontStyle && that.Styles.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontStyle = d[i]; set.fontStyle = true; }
+ else if (!set.fontVariant && that.Variants.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true; }
+ else if (!set.fontWeight && that.Weights.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontWeight = d[i]; set.fontStyle = set.fontVariant = set.fontWeight = true; }
+ else if (!set.fontSize) { if (d[i] != 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true; }
+ else { if (d[i] != 'inherit') ff += d[i]; }
+ } if (ff != '') f.fontFamily = ff;
+ return f;
+ }
+ });
+
+ // points and paths
+ svg.ToNumberArray = function(s) {
+ var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
+ for (var i=0; i<a.length; i++) {
+ a[i] = parseFloat(a[i]);
+ }
+ return a;
+ }
+ svg.Point = function(x, y) {
+ this.x = x;
+ this.y = y;
+
+ this.angleTo = function(p) {
+ return Math.atan2(p.y - this.y, p.x - this.x);
+ }
+
+ this.applyTransform = function(v) {
+ var xp = this.x * v[0] + this.y * v[2] + v[4];
+ var yp = this.x * v[1] + this.y * v[3] + v[5];
+ this.x = xp;
+ this.y = yp;
+ }
+ }
+ svg.CreatePoint = function(s) {
+ var a = svg.ToNumberArray(s);
+ return new svg.Point(a[0], a[1]);
+ }
+ svg.CreatePath = function(s) {
+ var a = svg.ToNumberArray(s);
+ var path = [];
+ for (var i=0; i<a.length; i+=2) {
+ path.push(new svg.Point(a[i], a[i+1]));
+ }
+ return path;
+ }
+
+ // bounding box
+ svg.BoundingBox = function(x1, y1, x2, y2) { // pass in initial points if you want
+ this.x1 = Number.NaN;
+ this.y1 = Number.NaN;
+ this.x2 = Number.NaN;
+ this.y2 = Number.NaN;
+
+ this.x = function() { return this.x1; }
+ this.y = function() { return this.y1; }
+ this.width = function() { return this.x2 - this.x1; }
+ this.height = function() { return this.y2 - this.y1; }
+
+ this.addPoint = function(x, y) {
+ if (x != null) {
+ if (isNaN(this.x1) || isNaN(this.x2)) {
+ this.x1 = x;
+ this.x2 = x;
+ }
+ if (x < this.x1) this.x1 = x;
+ if (x > this.x2) this.x2 = x;
+ }
+
+ if (y != null) {
+ if (isNaN(this.y1) || isNaN(this.y2)) {
+ this.y1 = y;
+ this.y2 = y;
+ }
+ if (y < this.y1) this.y1 = y;
+ if (y > this.y2) this.y2 = y;
+ }
+ }
+ this.addX = function(x) { this.addPoint(x, null); }
+ this.addY = function(y) { this.addPoint(null, y); }
+
+ this.addBoundingBox = function(bb) {
+ this.addPoint(bb.x1, bb.y1);
+ this.addPoint(bb.x2, bb.y2);
+ }
+
+ this.addQuadraticCurve = function(p0x, p0y, p1x, p1y, p2x, p2y) {
+ var cp1x = p0x + 2/3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
+ var cp1y = p0y + 2/3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
+ var cp2x = cp1x + 1/3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
+ var cp2y = cp1y + 1/3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
+ this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
+ }
+
+ this.addBezierCurve = function(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
+ // from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
+ var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
+ this.addPoint(p0[0], p0[1]);
+ this.addPoint(p3[0], p3[1]);
+
+ for (i=0; i<=1; i++) {
+ var f = function(t) {
+ return Math.pow(1-t, 3) * p0[i]
+ + 3 * Math.pow(1-t, 2) * t * p1[i]
+ + 3 * (1-t) * Math.pow(t, 2) * p2[i]
+ + Math.pow(t, 3) * p3[i];
+ }
+
+ var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
+ var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
+ var c = 3 * p1[i] - 3 * p0[i];
+
+ if (a == 0) {
+ if (b == 0) continue;
+ var t = -c / b;
+ if (0 < t && t < 1) {
+ if (i == 0) this.addX(f(t));
+ if (i == 1) this.addY(f(t));
+ }
+ continue;
+ }
+
+ var b2ac = Math.pow(b, 2) - 4 * c * a;
+ if (b2ac < 0) continue;
+ var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
+ if (0 < t1 && t1 < 1) {
+ if (i == 0) this.addX(f(t1));
+ if (i == 1) this.addY(f(t1));
+ }
+ var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
+ if (0 < t2 && t2 < 1) {
+ if (i == 0) this.addX(f(t2));
+ if (i == 1) this.addY(f(t2));
+ }
+ }
+ }
+
+ this.isPointInBox = function(x, y) {
+ return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
+ }
+
+ this.addPoint(x1, y1);
+ this.addPoint(x2, y2);
+ }
+
+ // transforms
+ svg.Transform = function(v) {
+ var that = this;
+ this.Type = {}
+
+ // translate
+ this.Type.translate = function(s) {
+ this.p = svg.CreatePoint(s);
+ this.apply = function(ctx) {
+ ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
+ }
+ this.applyToPoint = function(p) {
+ p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
+ }
+ }
+
+ // rotate
+ this.Type.rotate = function(s) {
+ var a = svg.ToNumberArray(s);
+ this.angle = new svg.Property('angle', a[0]);
+ this.cx = a[1] || 0;
+ this.cy = a[2] || 0;
+ this.apply = function(ctx) {
+ ctx.translate(this.cx, this.cy);
+ ctx.rotate(this.angle.Angle.toRadians());
+ ctx.translate(-this.cx, -this.cy);
+ }
+ this.applyToPoint = function(p) {
+ var a = this.angle.Angle.toRadians();
+ p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
+ p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
+ p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
+ }
+ }
+
+ this.Type.scale = function(s) {
+ this.p = svg.CreatePoint(s);
+ this.apply = function(ctx) {
+ ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
+ }
+ this.applyToPoint = function(p) {
+ p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
+ }
+ }
+
+ this.Type.matrix = function(s) {
+ this.m = svg.ToNumberArray(s);
+ this.apply = function(ctx) {
+ ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
+ }
+ this.applyToPoint = function(p) {
+ p.applyTransform(this.m);
+ }
+ }
+
+ this.Type.SkewBase = function(s) {
+ this.base = that.Type.matrix;
+ this.base(s);
+ this.angle = new svg.Property('angle', s);
+ }
+ this.Type.SkewBase.prototype = new this.Type.matrix;
+
+ this.Type.skewX = function(s) {
+ this.base = that.Type.SkewBase;
+ this.base(s);
+ this.m = [1, 0, Math.tan(this.angle.Angle.toRadians()), 1, 0, 0];
+ }
+ this.Type.skewX.prototype = new this.Type.SkewBase;
+
+ this.Type.skewY = function(s) {
+ this.base = that.Type.SkewBase;
+ this.base(s);
+ this.m = [1, Math.tan(this.angle.Angle.toRadians()), 0, 1, 0, 0];
+ }
+ this.Type.skewY.prototype = new this.Type.SkewBase;
+
+ this.transforms = [];
+
+ this.apply = function(ctx) {
+ for (var i=0; i<this.transforms.length; i++) {
+ this.transforms[i].apply(ctx);
+ }
+ }
+
+ this.applyToPoint = function(p) {
+ for (var i=0; i<this.transforms.length; i++) {
+ this.transforms[i].applyToPoint(p);
+ }
+ }
+
+ var data = svg.trim(svg.compressSpaces(v)).split(/\s(?=[a-z])/);
+ for (var i=0; i<data.length; i++) {
+ var type = data[i].split('(')[0];
+ var s = data[i].split('(')[1].replace(')','');
+ var transform = new this.Type[type](s);
+ this.transforms.push(transform);
+ }
+ }
+
+ // aspect ratio
+ svg.AspectRatio = function(ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
+ // aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
+ aspectRatio = svg.compressSpaces(aspectRatio);
+ aspectRatio = aspectRatio.replace(/^defer\s/,''); // ignore defer
+ var align = aspectRatio.split(' ')[0] || 'xMidYMid';
+ var meetOrSlice = aspectRatio.split(' ')[1] || 'meet';
+
+ // calculate scale
+ var scaleX = width / desiredWidth;
+ var scaleY = height / desiredHeight;
+ var scaleMin = Math.min(scaleX, scaleY);
+ var scaleMax = Math.max(scaleX, scaleY);
+ if (meetOrSlice == 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
+ if (meetOrSlice == 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }
+
+ refX = new svg.Property('refX', refX);
+ refY = new svg.Property('refY', refY);
+ if (refX.hasValue() && refY.hasValue()) {
+ ctx.translate(-scaleMin * refX.Length.toPixels('x'), -scaleMin * refY.Length.toPixels('y'));
+ }
+ else {
+ // align
+ if (align.match(/^xMid/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
+ if (align.match(/YMid$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
+ if (align.match(/^xMax/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width - desiredWidth, 0);
+ if (align.match(/YMax$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height - desiredHeight);
+ }
+
+ // scale
+ if (align == 'none') ctx.scale(scaleX, scaleY);
+ else if (meetOrSlice == 'meet') ctx.scale(scaleMin, scaleMin);
+ else if (meetOrSlice == 'slice') ctx.scale(scaleMax, scaleMax);
+
+ // translate
+ ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
+ }
+
+ // elements
+ svg.Element = {}
+
+ svg.Element.ElementBase = function(node) {
+ this.attributes = {};
+ this.styles = {};
+ this.children = [];
+
+ // get or create attribute
+ this.attribute = function(name, createIfNotExists) {
+ var a = this.attributes[name];
+ if (a != null) return a;
+
+ a = new svg.Property(name, '');
+ if (createIfNotExists == true) this.attributes[name] = a;
+ return a;
+ }
+
+ // get or create style, crawls up node tree
+ this.style = function(name, createIfNotExists) {
+ var s = this.styles[name];
+ if (s != null) return s;
+
+ var a = this.attribute(name);
+ if (a != null && a.hasValue()) {
+ return a;
+ }
+
+ var p = this.parent;
+ if (p != null) {
+ var ps = p.style(name);
+ if (ps != null && ps.hasValue()) {
+ return ps;
+ }
+ }
+
+ s = new svg.Property(name, '');
+ if (createIfNotExists == true) this.styles[name] = s;
+ return s;
+ }
+
+ // base render
+ this.render = function(ctx) {
+ // don't render display=none
+ if (this.style('display').value == 'none') return;
+
+ // don't render visibility=hidden
+ if (this.attribute('visibility').value == 'hidden') return;
+
+ ctx.save();
+ this.setContext(ctx);
+ // mask
+ if (this.attribute('mask').hasValue()) {
+ var mask = this.attribute('mask').Definition.getDefinition();
+ if (mask != null) mask.apply(ctx, this);
+ }
+ else if (this.style('filter').hasValue()) {
+ var filter = this.style('filter').Definition.getDefinition();
+ if (filter != null) filter.apply(ctx, this);
+ }
+ else this.renderChildren(ctx);
+ this.clearContext(ctx);
+ ctx.restore();
+ }
+
+ // base set context
+ this.setContext = function(ctx) {
+ // OVERRIDE ME!
+ }
+
+ // base clear context
+ this.clearContext = function(ctx) {
+ // OVERRIDE ME!
+ }
+
+ // base render children
+ this.renderChildren = function(ctx) {
+ for (var i=0; i<this.children.length; i++) {
+ this.children[i].render(ctx);
+ }
+ }
+
+ this.addChild = function(childNode, create) {
+ var child = childNode;
+ if (create) child = svg.CreateElement(childNode);
+ child.parent = this;
+ this.children.push(child);
+ }
+
+ if (node != null && node.nodeType == 1) { //ELEMENT_NODE
+ // add children
+ for (var i=0; i<node.childNodes.length; i++) {
+ var childNode = node.childNodes[i];
+ if (childNode.nodeType == 1) this.addChild(childNode, true); //ELEMENT_NODE
+ }
+
+ // add attributes
+ for (var i=0; i<node.attributes.length; i++) {
+ var attribute = node.attributes[i];
+ this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.nodeValue);
+ }
+
+ // add tag styles
+ var styles = svg.Styles[node.nodeName];
+ if (styles != null) {
+ for (var name in styles) {
+ this.styles[name] = styles[name];
+ }
+ }
+
+ // add class styles
+ if (this.attribute('class').hasValue()) {
+ var classes = svg.compressSpaces(this.attribute('class').value).split(' ');
+ for (var j=0; j<classes.length; j++) {
+ styles = svg.Styles['.'+classes[j]];
+ if (styles != null) {
+ for (var name in styles) {
+ this.styles[name] = styles[name];
+ }
+ }
+ styles = svg.Styles[node.nodeName+'.'+classes[j]];
+ if (styles != null) {
+ for (var name in styles) {
+ this.styles[name] = styles[name];
+ }
+ }
+ }
+ }
+
+ // add inline styles
+ if (this.attribute('style').hasValue()) {
+ var styles = this.attribute('style').value.split(';');
+ for (var i=0; i<styles.length; i++) {
+ if (svg.trim(styles[i]) != '') {
+ var style = styles[i].split(':');
+ var name = svg.trim(style[0]);
+ var value = svg.trim(style[1]);
+ this.styles[name] = new svg.Property(name, value);
+ }
+ }
+ }
+
+ // add id
+ if (this.attribute('id').hasValue()) {
+ if (svg.Definitions[this.attribute('id').value] == null) {
+ svg.Definitions[this.attribute('id').value] = this;
+ }
+ }
+ }
+ }
+
+ svg.Element.RenderedElementBase = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.setContext = function(ctx) {
+ // fill
+ if (this.style('fill').Definition.isUrl()) {
+ var fs = this.style('fill').Definition.getFillStyle(this);
+ if (fs != null) ctx.fillStyle = fs;
+ }
+ else if (this.style('fill').hasValue()) {
+ var fillStyle = this.style('fill');
+ if (this.style('fill-opacity').hasValue()) fillStyle = fillStyle.Color.addOpacity(this.style('fill-opacity').value);
+ ctx.fillStyle = (fillStyle.value == 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
+ }
+
+ // stroke
+ if (this.style('stroke').Definition.isUrl()) {
+ var fs = this.style('stroke').Definition.getFillStyle(this);
+ if (fs != null) ctx.strokeStyle = fs;
+ }
+ else if (this.style('stroke').hasValue()) {
+ var strokeStyle = this.style('stroke');
+ if (this.style('stroke-opacity').hasValue()) strokeStyle = strokeStyle.Color.addOpacity(this.style('stroke-opacity').value);
+ ctx.strokeStyle = (strokeStyle.value == 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
+ }
+ if (this.style('stroke-width').hasValue()) ctx.lineWidth = this.style('stroke-width').Length.toPixels();
+ if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
+ if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
+ if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
+
+ // font
+ if (typeof(ctx.font) != 'undefined') {
+ ctx.font = svg.Font.CreateFont(
+ this.style('font-style').value,
+ this.style('font-variant').value,
+ this.style('font-weight').value,
+ this.style('font-size').hasValue() ? this.style('font-size').Length.toPixels() + 'px' : '',
+ this.style('font-family').value).toString();
+ }
+
+ // transform
+ if (this.attribute('transform').hasValue()) {
+ var transform = new svg.Transform(this.attribute('transform').value);
+ transform.apply(ctx);
+ }
+
+ // clip
+ if (this.attribute('clip-path').hasValue()) {
+ var clip = this.attribute('clip-path').Definition.getDefinition();
+ if (clip != null) clip.apply(ctx);
+ }
+
+ // opacity
+ if (this.style('opacity').hasValue()) {
+ ctx.globalAlpha = this.style('opacity').numValue();
+ }
+ }
+ }
+ svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase;
+
+ svg.Element.PathElementBase = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.path = function(ctx) {
+ if (ctx != null) ctx.beginPath();
+ return new svg.BoundingBox();
+ }
+
+ this.renderChildren = function(ctx) {
+ this.path(ctx);
+ svg.Mouse.checkPath(this, ctx);
+ if (ctx.fillStyle != '') ctx.fill();
+ if (ctx.strokeStyle != '') ctx.stroke();
+
+ var markers = this.getMarkers();
+ if (markers != null) {
+ if (this.style('marker-start').Definition.isUrl()) {
+ var marker = this.style('marker-start').Definition.getDefinition();
+ marker.render(ctx, markers[0][0], markers[0][1]);
+ }
+ if (this.style('marker-mid').Definition.isUrl()) {
+ var marker = this.style('marker-mid').Definition.getDefinition();
+ for (var i=1;i<markers.length-1;i++) {
+ marker.render(ctx, markers[i][0], markers[i][1]);
+ }
+ }
+ if (this.style('marker-end').Definition.isUrl()) {
+ var marker = this.style('marker-end').Definition.getDefinition();
+ marker.render(ctx, markers[markers.length-1][0], markers[markers.length-1][1]);
+ }
+ }
+ }
+
+ this.getBoundingBox = function() {
+ return this.path();
+ }
+
+ this.getMarkers = function() {
+ return null;
+ }
+ }
+ svg.Element.PathElementBase.prototype = new svg.Element.RenderedElementBase;
+
+ // svg element
+ svg.Element.svg = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.baseClearContext = this.clearContext;
+ this.clearContext = function(ctx) {
+ this.baseClearContext(ctx);
+ svg.ViewPort.RemoveCurrent();
+ }
+
+ this.baseSetContext = this.setContext;
+ this.setContext = function(ctx) {
+ // initial values
+ ctx.strokeStyle = 'rgba(0,0,0,0)';
+ ctx.lineCap = 'butt';
+ ctx.lineJoin = 'miter';
+ ctx.miterLimit = 4;
+
+ this.baseSetContext(ctx);
+
+ // create new view port
+ if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
+ ctx.translate(this.attribute('x').Length.toPixels('x'), this.attribute('y').Length.toPixels('y'));
+ }
+
+ var width = svg.ViewPort.width();
+ var height = svg.ViewPort.height();
+ if (typeof(this.root) == 'undefined' && this.attribute('width').hasValue() && this.attribute('height').hasValue()) {
+ width = this.attribute('width').Length.toPixels('x');
+ height = this.attribute('height').Length.toPixels('y');
+
+ var x = 0;
+ var y = 0;
+ if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
+ x = -this.attribute('refX').Length.toPixels('x');
+ y = -this.attribute('refY').Length.toPixels('y');
+ }
+
+ ctx.beginPath();
+ ctx.moveTo(x, y);
+ ctx.lineTo(width, y);
+ ctx.lineTo(width, height);
+ ctx.lineTo(x, height);
+ ctx.closePath();
+ ctx.clip();
+ }
+ svg.ViewPort.SetCurrent(width, height);
+
+ // viewbox
+ if (this.attribute('viewBox').hasValue()) {
+ var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
+ var minX = viewBox[0];
+ var minY = viewBox[1];
+ width = viewBox[2];
+ height = viewBox[3];
+
+ svg.AspectRatio(ctx,
+ this.attribute('preserveAspectRatio').value,
+ svg.ViewPort.width(),
+ width,
+ svg.ViewPort.height(),
+ height,
+ minX,
+ minY,
+ this.attribute('refX').value,
+ this.attribute('refY').value);
+
+ svg.ViewPort.RemoveCurrent();
+ svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
+ }
+ }
+ }
+ svg.Element.svg.prototype = new svg.Element.RenderedElementBase;
+
+ // rect element
+ svg.Element.rect = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ this.path = function(ctx) {
+ var x = this.attribute('x').Length.toPixels('x');
+ var y = this.attribute('y').Length.toPixels('y');
+ var width = this.attribute('width').Length.toPixels('x');
+ var height = this.attribute('height').Length.toPixels('y');
+ var rx = this.attribute('rx').Length.toPixels('x');
+ var ry = this.attribute('ry').Length.toPixels('y');
+ if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
+ if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
+
+ if (ctx != null) {
+ ctx.beginPath();
+ ctx.moveTo(x + rx, y);
+ ctx.lineTo(x + width - rx, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
+ ctx.lineTo(x + width, y + height - ry);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
+ ctx.lineTo(x + rx, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
+ ctx.lineTo(x, y + ry);
+ ctx.quadraticCurveTo(x, y, x + rx, y)
+ ctx.closePath();
+ }
+
+ return new svg.BoundingBox(x, y, x + width, y + height);
+ }
+ }
+ svg.Element.rect.prototype = new svg.Element.PathElementBase;
+
+ // circle element
+ svg.Element.circle = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ this.path = function(ctx) {
+ var cx = this.attribute('cx').Length.toPixels('x');
+ var cy = this.attribute('cy').Length.toPixels('y');
+ var r = this.attribute('r').Length.toPixels();
+
+ if (ctx != null) {
+ ctx.beginPath();
+ ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
+ ctx.closePath();
+ }
+
+ return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
+ }
+ }
+ svg.Element.circle.prototype = new svg.Element.PathElementBase;
+
+ // ellipse element
+ svg.Element.ellipse = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ this.path = function(ctx) {
+ var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
+ var rx = this.attribute('rx').Length.toPixels('x');
+ var ry = this.attribute('ry').Length.toPixels('y');
+ var cx = this.attribute('cx').Length.toPixels('x');
+ var cy = this.attribute('cy').Length.toPixels('y');
+
+ if (ctx != null) {
+ ctx.beginPath();
+ ctx.moveTo(cx, cy - ry);
+ ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
+ ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
+ ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
+ ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
+ ctx.closePath();
+ }
+
+ return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
+ }
+ }
+ svg.Element.ellipse.prototype = new svg.Element.PathElementBase;
+
+ // line element
+ svg.Element.line = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ this.getPoints = function() {
+ return [
+ new svg.Point(this.attribute('x1').Length.toPixels('x'), this.attribute('y1').Length.toPixels('y')),
+ new svg.Point(this.attribute('x2').Length.toPixels('x'), this.attribute('y2').Length.toPixels('y'))];
+ }
+
+ this.path = function(ctx) {
+ var points = this.getPoints();
+
+ if (ctx != null) {
+ ctx.beginPath();
+ ctx.moveTo(points[0].x, points[0].y);
+ ctx.lineTo(points[1].x, points[1].y);
+ }
+
+ return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
+ }
+
+ this.getMarkers = function() {
+ var points = this.getPoints();
+ var a = points[0].angleTo(points[1]);
+ return [[points[0], a], [points[1], a]];
+ }
+ }
+ svg.Element.line.prototype = new svg.Element.PathElementBase;
+
+ // polyline element
+ svg.Element.polyline = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ this.points = svg.CreatePath(this.attribute('points').value);
+ this.path = function(ctx) {
+ var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
+ if (ctx != null) {
+ ctx.beginPath();
+ ctx.moveTo(this.points[0].x, this.points[0].y);
+ }
+ for (var i=1; i<this.points.length; i++) {
+ bb.addPoint(this.points[i].x, this.points[i].y);
+ if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
+ }
+ return bb;
+ }
+
+ this.getMarkers = function() {
+ var markers = [];
+ for (var i=0; i<this.points.length - 1; i++) {
+ markers.push([this.points[i], this.points[i].angleTo(this.points[i+1])]);
+ }
+ markers.push([this.points[this.points.length-1], markers[markers.length-1][1]]);
+ return markers;
+ }
+ }
+ svg.Element.polyline.prototype = new svg.Element.PathElementBase;
+
+ // polygon element
+ svg.Element.polygon = function(node) {
+ this.base = svg.Element.polyline;
+ this.base(node);
+
+ this.basePath = this.path;
+ this.path = function(ctx) {
+ var bb = this.basePath(ctx);
+ if (ctx != null) {
+ ctx.lineTo(this.points[0].x, this.points[0].y);
+ ctx.closePath();
+ }
+ return bb;
+ }
+ }
+ svg.Element.polygon.prototype = new svg.Element.polyline;
+
+ // path element
+ svg.Element.path = function(node) {
+ this.base = svg.Element.PathElementBase;
+ this.base(node);
+
+ var d = this.attribute('d').value;
+ // TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
+ d = d.replace(/,/gm,' '); // get rid of all commas
+ d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
+ d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
+ d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm,'$1 $2'); // separate commands from points
+ d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from points
+ d = d.replace(/([0-9])([+\-])/gm,'$1 $2'); // separate digits when no comma
+ d = d.replace(/(\.[0-9]*)(\.)/gm,'$1 $2'); // separate digits when no comma
+ d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm,'$1 $3 $4 '); // shorthand elliptical arc path syntax
+ d = svg.compressSpaces(d); // compress multiple spaces
+ d = svg.trim(d);
+ this.PathParser = new (function(d) {
+ this.tokens = d.split(' ');
+
+ this.reset = function() {
+ this.i = -1;
+ this.command = '';
+ this.previousCommand = '';
+ this.start = new svg.Point(0, 0);
+ this.control = new svg.Point(0, 0);
+ this.current = new svg.Point(0, 0);
+ this.points = [];
+ this.angles = [];
+ }
+
+ this.isEnd = function() {
+ return this.i >= this.tokens.length - 1;
+ }
+
+ this.isCommandOrEnd = function() {
+ if (this.isEnd()) return true;
+ return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
+ }
+
+ this.isRelativeCommand = function() {
+ return this.command == this.command.toLowerCase();
+ }
+
+ this.getToken = function() {
+ this.i = this.i + 1;
+ return this.tokens[this.i];
+ }
+
+ this.getScalar = function() {
+ return parseFloat(this.getToken());
+ }
+
+ this.nextCommand = function() {
+ this.previousCommand = this.command;
+ this.command = this.getToken();
+ }
+
+ this.getPoint = function() {
+ var p = new svg.Point(this.getScalar(), this.getScalar());
+ return this.makeAbsolute(p);
+ }
+
+ this.getAsControlPoint = function() {
+ var p = this.getPoint();
+ this.control = p;
+ return p;
+ }
+
+ this.getAsCurrentPoint = function() {
+ var p = this.getPoint();
+ this.current = p;
+ return p;
+ }
+
+ this.getReflectedControlPoint = function() {
+ if (this.previousCommand.toLowerCase() != 'c' && this.previousCommand.toLowerCase() != 's') {
+ return this.current;
+ }
+
+ // reflect point
+ var p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
+ return p;
+ }
+
+ this.makeAbsolute = function(p) {
+ if (this.isRelativeCommand()) {
+ p.x = this.current.x + p.x;
+ p.y = this.current.y + p.y;
+ }
+ return p;
+ }
+
+ this.addMarker = function(p, from, priorTo) {
+ // if the last angle isn't filled in because we didn't have this point yet ...
+ if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length-1] == null) {
+ this.angles[this.angles.length-1] = this.points[this.points.length-1].angleTo(priorTo);
+ }
+ this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
+ }
+
+ this.addMarkerAngle = function(p, a) {
+ this.points.push(p);
+ this.angles.push(a);
+ }
+
+ this.getMarkerPoints = function() { return this.points; }
+ this.getMarkerAngles = function() {
+ for (var i=0; i<this.angles.length; i++) {
+ if (this.angles[i] == null) {
+ for (var j=i+1; j<this.angles.length; j++) {
+ if (this.angles[j] != null) {
+ this.angles[i] = this.angles[j];
+ break;
+ }
+ }
+ }
+ }
+ return this.angles;
+ }
+ })(d);
+
+ this.path = function(ctx) {
+ var pp = this.PathParser;
+ pp.reset();
+
+ var bb = new svg.BoundingBox();
+ if (ctx != null) ctx.beginPath();
+ while (!pp.isEnd()) {
+ pp.nextCommand();
+ switch (pp.command.toUpperCase()) {
+ case 'M':
+ var p = pp.getAsCurrentPoint();
+ pp.addMarker(p);
+ bb.addPoint(p.x, p.y);
+ if (ctx != null) ctx.moveTo(p.x, p.y);
+ pp.start = pp.current;
+ while (!pp.isCommandOrEnd()) {
+ var p = pp.getAsCurrentPoint();
+ pp.addMarker(p, pp.start);
+ bb.addPoint(p.x, p.y);
+ if (ctx != null) ctx.lineTo(p.x, p.y);
+ }
+ break;
+ case 'L':
+ while (!pp.isCommandOrEnd()) {
+ var c = pp.current;
+ var p = pp.getAsCurrentPoint();
+ pp.addMarker(p, c);
+ bb.addPoint(p.x, p.y);
+ if (ctx != null) ctx.lineTo(p.x, p.y);
+ }
+ break;
+ case 'H':
+ while (!pp.isCommandOrEnd()) {
+ var newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
+ pp.addMarker(newP, pp.current);
+ pp.current = newP;
+ bb.addPoint(pp.current.x, pp.current.y);
+ if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+ }
+ break;
+ case 'V':
+ while (!pp.isCommandOrEnd()) {
+ var newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
+ pp.addMarker(newP, pp.current);
+ pp.current = newP;
+ bb.addPoint(pp.current.x, pp.current.y);
+ if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
+ }
+ break;
+ case 'C':
+ while (!pp.isCommandOrEnd()) {
+ var curr = pp.current;
+ var p1 = pp.getPoint();
+ var cntrl = pp.getAsControlPoint();
+ var cp = pp.getAsCurrentPoint();
+ pp.addMarker(cp, cntrl, p1);
+ bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ }
+ break;
+ case 'S':
+ while (!pp.isCommandOrEnd()) {
+ var curr = pp.current;
+ var p1 = pp.getReflectedControlPoint();
+ var cntrl = pp.getAsControlPoint();
+ var cp = pp.getAsCurrentPoint();
+ pp.addMarker(cp, cntrl, p1);
+ bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ }
+ break;
+ case 'Q':
+ while (!pp.isCommandOrEnd()) {
+ var curr = pp.current;
+ var cntrl = pp.getAsControlPoint();
+ var cp = pp.getAsCurrentPoint();
+ pp.addMarker(cp, cntrl, cntrl);
+ bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
+ }
+ break;
+ case 'T':
+ while (!pp.isCommandOrEnd()) {
+ var curr = pp.current;
+ var cntrl = pp.getReflectedControlPoint();
+ pp.control = cntrl;
+ var cp = pp.getAsCurrentPoint();
+ pp.addMarker(cp, cntrl, cntrl);
+ bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
+ if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
+ }
+ break;
+ case 'A':
+ while (!pp.isCommandOrEnd()) {
+ var curr = pp.current;
+ var rx = pp.getScalar();
+ var ry = pp.getScalar();
+ var xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
+ var largeArcFlag = pp.getScalar();
+ var sweepFlag = pp.getScalar();
+ var cp = pp.getAsCurrentPoint();
+
+ // Conversion from endpoint to center parameterization
+ // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
+ // x1', y1'
+ var currp = new svg.Point(
+ Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
+ -Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
+ );
+ // adjust radii
+ var l = Math.pow(currp.x,2)/Math.pow(rx,2)+Math.pow(currp.y,2)/Math.pow(ry,2);
+ if (l > 1) {
+ rx *= Math.sqrt(l);
+ ry *= Math.sqrt(l);
+ }
+ // cx', cy'
+ var s = (largeArcFlag == sweepFlag ? -1 : 1) * Math.sqrt(
+ ((Math.pow(rx,2)*Math.pow(ry,2))-(Math.pow(rx,2)*Math.pow(currp.y,2))-(Math.pow(ry,2)*Math.pow(currp.x,2))) /
+ (Math.pow(rx,2)*Math.pow(currp.y,2)+Math.pow(ry,2)*Math.pow(currp.x,2))
+ );
+ if (isNaN(s)) s = 0;
+ var cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
+ // cx, cy
+ var centp = new svg.Point(
+ (curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
+ (curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
+ );
+ // vector magnitude
+ var m = function(v) { return Math.sqrt(Math.pow(v[0],2) + Math.pow(v[1],2)); }
+ // ratio between two vectors
+ var r = function(u, v) { return (u[0]*v[0]+u[1]*v[1]) / (m(u)*m(v)) }
+ // angle between two vectors
+ var a = function(u, v) { return (u[0]*v[1] < u[1]*v[0] ? -1 : 1) * Math.acos(r(u,v)); }
+ // initial angle
+ var a1 = a([1,0], [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry]);
+ // angle delta
+ var u = [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry];
+ var v = [(-currp.x-cpp.x)/rx,(-currp.y-cpp.y)/ry];
+ var ad = a(u, v);
+ if (r(u,v) <= -1) ad = Math.PI;
+ if (r(u,v) >= 1) ad = 0;
+
+ if (sweepFlag == 0 && ad > 0) ad = ad - 2 * Math.PI;
+ if (sweepFlag == 1 && ad < 0) ad = ad + 2 * Math.PI;
+
+ // for markers
+ var halfWay = new svg.Point(
+ centp.x - rx * Math.cos((a1 + ad) / 2),
+ centp.y - ry * Math.sin((a1 + ad) / 2)
+ );
+ pp.addMarkerAngle(halfWay, (a1 + ad) / 2 + (sweepFlag == 0 ? 1 : -1) * Math.PI / 2);
+ pp.addMarkerAngle(cp, ad + (sweepFlag == 0 ? 1 : -1) * Math.PI / 2);
+
+ bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
+ if (ctx != null) {
+ var r = rx > ry ? rx : ry;
+ var sx = rx > ry ? 1 : rx / ry;
+ var sy = rx > ry ? ry / rx : 1;
+
+ ctx.translate(centp.x, centp.y);
+ ctx.rotate(xAxisRotation);
+ ctx.scale(sx, sy);
+ ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
+ ctx.scale(1/sx, 1/sy);
+ ctx.rotate(-xAxisRotation);
+ ctx.translate(-centp.x, -centp.y);
+ }
+ }
+ break;
+ case 'Z':
+ if (ctx != null) ctx.closePath();
+ pp.current = pp.start;
+ }
+ }
+
+ return bb;
+ }
+
+ this.getMarkers = function() {
+ var points = this.PathParser.getMarkerPoints();
+ var angles = this.PathParser.getMarkerAngles();
+
+ var markers = [];
+ for (var i=0; i<points.length; i++) {
+ markers.push([points[i], angles[i]]);
+ }
+ return markers;
+ }
+ }
+ svg.Element.path.prototype = new svg.Element.PathElementBase;
+
+ // pattern element
+ svg.Element.pattern = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.createPattern = function(ctx, element) {
+ // render me using a temporary svg element
+ var tempSvg = new svg.Element.svg();
+ tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
+ tempSvg.attributes['x'] = new svg.Property('x', this.attribute('x').value);
+ tempSvg.attributes['y'] = new svg.Property('y', this.attribute('y').value);
+ tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
+ tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
+ tempSvg.children = this.children;
+
+ var c = document.createElement('canvas');
+ c.width = this.attribute('width').Length.toPixels('x');
+ c.height = this.attribute('height').Length.toPixels('y');
+ tempSvg.render(c.getContext('2d'));
+ return ctx.createPattern(c, 'repeat');
+ }
+ }
+ svg.Element.pattern.prototype = new svg.Element.ElementBase;
+
+ // marker element
+ svg.Element.marker = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.baseRender = this.render;
+ this.render = function(ctx, point, angle) {
+ ctx.translate(point.x, point.y);
+ if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(angle);
+ if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
+ ctx.save();
+
+ // render me using a temporary svg element
+ var tempSvg = new svg.Element.svg();
+ tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
+ tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
+ tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
+ tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
+ tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
+ tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
+ tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
+ tempSvg.children = this.children;
+ tempSvg.render(ctx);
+
+ ctx.restore();
+ if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(1/ctx.lineWidth, 1/ctx.lineWidth);
+ if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(-angle);
+ ctx.translate(-point.x, -point.y);
+ }
+ }
+ svg.Element.marker.prototype = new svg.Element.ElementBase;
+
+ // definitions element
+ svg.Element.defs = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.render = function(ctx) {
+ // NOOP
+ }
+ }
+ svg.Element.defs.prototype = new svg.Element.ElementBase;
+
+ // base for gradients
+ svg.Element.GradientBase = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
+
+ this.stops = [];
+ for (var i=0; i<this.children.length; i++) {
+ var child = this.children[i];
+ this.stops.push(child);
+ }
+
+ this.getGradient = function() {
+ // OVERRIDE ME!
+ }
+
+ this.createGradient = function(ctx, element) {
+ var stopsContainer = this;
+ if (this.attribute('xlink:href').hasValue()) {
+ stopsContainer = this.attribute('xlink:href').Definition.getDefinition();
+ }
+
+ var g = this.getGradient(ctx, element);
+ for (var i=0; i<stopsContainer.stops.length; i++) {
+ g.addColorStop(stopsContainer.stops[i].offset, stopsContainer.stops[i].color);
+ }
+
+ if (this.attribute('gradientTransform').hasValue()) {
+ // render as transformed pattern on temporary canvas
+ var rootView = svg.ViewPort.viewPorts[0];
+
+ var rect = new svg.Element.rect();
+ rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS/3.0);
+ rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS/3.0);
+ rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
+ rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
+
+ var group = new svg.Element.g();
+ group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
+ group.children = [ rect ];
+
+ var tempSvg = new svg.Element.svg();
+ tempSvg.attributes['x'] = new svg.Property('x', 0);
+ tempSvg.attributes['y'] = new svg.Property('y', 0);
+ tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
+ tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
+ tempSvg.children = [ group ];
+
+ var c = document.createElement('canvas');
+ c.width = rootView.width;
+ c.height = rootView.height;
+ var tempCtx = c.getContext('2d');
+ tempCtx.fillStyle = g;
+ tempSvg.render(tempCtx);
+ return tempCtx.createPattern(c, 'no-repeat');
+ }
+
+ return g;
+ }
+ }
+ svg.Element.GradientBase.prototype = new svg.Element.ElementBase;
+
+ // linear gradient element
+ svg.Element.linearGradient = function(node) {
+ this.base = svg.Element.GradientBase;
+ this.base(node);
+
+ this.getGradient = function(ctx, element) {
+ var bb = element.getBoundingBox();
+
+ var x1 = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.x() + bb.width() * this.attribute('x1').numValue()
+ : this.attribute('x1').Length.toPixels('x'));
+ var y1 = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.y() + bb.height() * this.attribute('y1').numValue()
+ : this.attribute('y1').Length.toPixels('y'));
+ var x2 = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.x() + bb.width() * this.attribute('x2').numValue()
+ : this.attribute('x2').Length.toPixels('x'));
+ var y2 = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.y() + bb.height() * this.attribute('y2').numValue()
+ : this.attribute('y2').Length.toPixels('y'));
+
+ return ctx.createLinearGradient(x1, y1, x2, y2);
+ }
+ }
+ svg.Element.linearGradient.prototype = new svg.Element.GradientBase;
+
+ // radial gradient element
+ svg.Element.radialGradient = function(node) {
+ this.base = svg.Element.GradientBase;
+ this.base(node);
+
+ this.getGradient = function(ctx, element) {
+ var bb = element.getBoundingBox();
+
+ var cx = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.x() + bb.width() * this.attribute('cx').numValue()
+ : this.attribute('cx').Length.toPixels('x'));
+ var cy = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.y() + bb.height() * this.attribute('cy').numValue()
+ : this.attribute('cy').Length.toPixels('y'));
+
+ var fx = cx;
+ var fy = cy;
+ if (this.attribute('fx').hasValue()) {
+ fx = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.x() + bb.width() * this.attribute('fx').numValue()
+ : this.attribute('fx').Length.toPixels('x'));
+ }
+ if (this.attribute('fy').hasValue()) {
+ fy = (this.gradientUnits == 'objectBoundingBox'
+ ? bb.y() + bb.height() * this.attribute('fy').numValue()
+ : this.attribute('fy').Length.toPixels('y'));
+ }
+
+ var r = (this.gradientUnits == 'objectBoundingBox'
+ ? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
+ : this.attribute('r').Length.toPixels());
+
+ return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
+ }
+ }
+ svg.Element.radialGradient.prototype = new svg.Element.GradientBase;
+
+ // gradient stop element
+ svg.Element.stop = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.offset = this.attribute('offset').numValue();
+
+ var stopColor = this.style('stop-color');
+ if (this.style('stop-opacity').hasValue()) stopColor = stopColor.Color.addOpacity(this.style('stop-opacity').value);
+ this.color = stopColor.value;
+ }
+ svg.Element.stop.prototype = new svg.Element.ElementBase;
+
+ // animation base element
+ svg.Element.AnimateBase = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ svg.Animations.push(this);
+
+ this.duration = 0.0;
+ this.begin = this.attribute('begin').Time.toMilliseconds();
+ this.maxDuration = this.begin + this.attribute('dur').Time.toMilliseconds();
+
+ this.getProperty = function() {
+ var attributeType = this.attribute('attributeType').value;
+ var attributeName = this.attribute('attributeName').value;
+
+ if (attributeType == 'CSS') {
+ return this.parent.style(attributeName, true);
+ }
+ return this.parent.attribute(attributeName, true);
+ };
+
+ this.initialValue = null;
+ this.removed = false;
+
+ this.calcValue = function() {
+ // OVERRIDE ME!
+ return '';
+ }
+
+ this.update = function(delta) {
+ // set initial value
+ if (this.initialValue == null) {
+ this.initialValue = this.getProperty().value;
+ }
+
+ // if we're past the end time
+ if (this.duration > this.maxDuration) {
+ // loop for indefinitely repeating animations
+ if (this.attribute('repeatCount').value == 'indefinite') {
+ this.duration = 0.0
+ }
+ else if (this.attribute('fill').valueOrDefault('remove') == 'remove' && !this.removed) {
+ this.removed = true;
+ this.getProperty().value = this.initialValue;
+ return true;
+ }
+ else {
+ return false; // no updates made
+ }
+ }
+ this.duration = this.duration + delta;
+
+ // if we're past the begin time
+ var updated = false;
+ if (this.begin < this.duration) {
+ var newValue = this.calcValue(); // tween
+
+ if (this.attribute('type').hasValue()) {
+ // for transform, etc.
+ var type = this.attribute('type').value;
+ newValue = type + '(' + newValue + ')';
+ }
+
+ this.getProperty().value = newValue;
+ updated = true;
+ }
+
+ return updated;
+ }
+
+ // fraction of duration we've covered
+ this.progress = function() {
+ return ((this.duration - this.begin) / (this.maxDuration - this.begin));
+ }
+ }
+ svg.Element.AnimateBase.prototype = new svg.Element.ElementBase;
+
+ // animate element
+ svg.Element.animate = function(node) {
+ this.base = svg.Element.AnimateBase;
+ this.base(node);
+
+ this.calcValue = function() {
+ var from = this.attribute('from').numValue();
+ var to = this.attribute('to').numValue();
+
+ // tween value linearly
+ return from + (to - from) * this.progress();
+ };
+ }
+ svg.Element.animate.prototype = new svg.Element.AnimateBase;
+
+ // animate color element
+ svg.Element.animateColor = function(node) {
+ this.base = svg.Element.AnimateBase;
+ this.base(node);
+
+ this.calcValue = function() {
+ var from = new RGBColor(this.attribute('from').value);
+ var to = new RGBColor(this.attribute('to').value);
+
+ if (from.ok && to.ok) {
+ // tween color linearly
+ var r = from.r + (to.r - from.r) * this.progress();
+ var g = from.g + (to.g - from.g) * this.progress();
+ var b = from.b + (to.b - from.b) * this.progress();
+ return 'rgb('+parseInt(r,10)+','+parseInt(g,10)+','+parseInt(b,10)+')';
+ }
+ return this.attribute('from').value;
+ };
+ }
+ svg.Element.animateColor.prototype = new svg.Element.AnimateBase;
+
+ // animate transform element
+ svg.Element.animateTransform = function(node) {
+ this.base = svg.Element.animate;
+ this.base(node);
+ }
+ svg.Element.animateTransform.prototype = new svg.Element.animate;
+
+ // font element
+ svg.Element.font = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.horizAdvX = this.attribute('horiz-adv-x').numValue();
+
+ this.isRTL = false;
+ this.isArabic = false;
+ this.fontFace = null;
+ this.missingGlyph = null;
+ this.glyphs = [];
+ for (var i=0; i<this.children.length; i++) {
+ var child = this.children[i];
+ if (child.type == 'font-face') {
+ this.fontFace = child;
+ if (child.style('font-family').hasValue()) {
+ svg.Definitions[child.style('font-family').value] = this;
+ }
+ }
+ else if (child.type == 'missing-glyph') this.missingGlyph = child;
+ else if (child.type == 'glyph') {
+ if (child.arabicForm != '') {
+ this.isRTL = true;
+ this.isArabic = true;
+ if (typeof(this.glyphs[child.unicode]) == 'undefined') this.glyphs[child.unicode] = [];
+ this.glyphs[child.unicode][child.arabicForm] = child;
+ }
+ else {
+ this.glyphs[child.unicode] = child;
+ }
+ }
+ }
+ }
+ svg.Element.font.prototype = new svg.Element.ElementBase;
+
+ // font-face element
+ svg.Element.fontface = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.ascent = this.attribute('ascent').value;
+ this.descent = this.attribute('descent').value;
+ this.unitsPerEm = this.attribute('units-per-em').numValue();
+ }
+ svg.Element.fontface.prototype = new svg.Element.ElementBase;
+
+ // missing-glyph element
+ svg.Element.missingglyph = function(node) {
+ this.base = svg.Element.path;
+ this.base(node);
+
+ this.horizAdvX = 0;
+ }
+ svg.Element.missingglyph.prototype = new svg.Element.path;
+
+ // glyph element
+ svg.Element.glyph = function(node) {
+ this.base = svg.Element.path;
+ this.base(node);
+
+ this.horizAdvX = this.attribute('horiz-adv-x').numValue();
+ this.unicode = this.attribute('unicode').value;
+ this.arabicForm = this.attribute('arabic-form').value;
+ }
+ svg.Element.glyph.prototype = new svg.Element.path;
+
+ // text element
+ svg.Element.text = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ if (node != null) {
+ // add children
+ this.children = [];
+ for (var i=0; i<node.childNodes.length; i++) {
+ var childNode = node.childNodes[i];
+ if (childNode.nodeType == 1) { // capture tspan and tref nodes
+ this.addChild(childNode, true);
+ }
+ else if (childNode.nodeType == 3) { // capture text
+ this.addChild(new svg.Element.tspan(childNode), false);
+ }
+ }
+ }
+
+ this.baseSetContext = this.setContext;
+ this.setContext = function(ctx) {
+ this.baseSetContext(ctx);
+ if (this.style('dominant-baseline').hasValue()) ctx.textBaseline = this.style('dominant-baseline').value;
+ if (this.style('alignment-baseline').hasValue()) ctx.textBaseline = this.style('alignment-baseline').value;
+ }
+
+ this.renderChildren = function(ctx) {
+ var textAnchor = this.style('text-anchor').valueOrDefault('start');
+ var x = this.attribute('x').Length.toPixels('x');
+ var y = this.attribute('y').Length.toPixels('y');
+ for (var i=0; i<this.children.length; i++) {
+ var child = this.children[i];
+
+ if (child.attribute('x').hasValue()) {
+ child.x = child.attribute('x').Length.toPixels('x');
+ }
+ else {
+ if (child.attribute('dx').hasValue()) x += child.attribute('dx').Length.toPixels('x');
+ child.x = x;
+ }
+
+ var childLength = child.measureText(ctx);
+ if (textAnchor != 'start' && (i==0 || child.attribute('x').hasValue())) { // new group?
+ // loop through rest of children
+ var groupLength = childLength;
+ for (var j=i+1; j<this.children.length; j++) {
+ var childInGroup = this.children[j];
+ if (childInGroup.attribute('x').hasValue()) break; // new group
+ groupLength += childInGroup.measureText(ctx);
+ }
+ child.x -= (textAnchor == 'end' ? groupLength : groupLength / 2.0);
+ }
+ x = child.x + childLength;
+
+ if (child.attribute('y').hasValue()) {
+ child.y = child.attribute('y').Length.toPixels('y');
+ }
+ else {
+ if (child.attribute('dy').hasValue()) y += child.attribute('dy').Length.toPixels('y');
+ child.y = y;
+ }
+ y = child.y;
+
+ child.render(ctx);
+ }
+ }
+ }
+ svg.Element.text.prototype = new svg.Element.RenderedElementBase;
+
+ // text base
+ svg.Element.TextElementBase = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.getGlyph = function(font, text, i) {
+ var c = text[i];
+ var glyph = null;
+ if (font.isArabic) {
+ var arabicForm = 'isolated';
+ if ((i==0 || text[i-1]==' ') && i<text.length-2 && text[i+1]!=' ') arabicForm = 'terminal';
+ if (i>0 && text[i-1]!=' ' && i<text.length-2 && text[i+1]!=' ') arabicForm = 'medial';
+ if (i>0 && text[i-1]!=' ' && (i == text.length-1 || text[i+1]==' ')) arabicForm = 'initial';
+ if (typeof(font.glyphs[c]) != 'undefined') {
+ glyph = font.glyphs[c][arabicForm];
+ if (glyph == null && font.glyphs[c].type == 'glyph') glyph = font.glyphs[c];
+ }
+ }
+ else {
+ glyph = font.glyphs[c];
+ }
+ if (glyph == null) glyph = font.missingGlyph;
+ return glyph;
+ }
+
+ this.renderChildren = function(ctx) {
+ var customFont = this.parent.style('font-family').Definition.getDefinition();
+ if (customFont != null) {
+ var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
+ var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
+ var text = this.getText();
+ if (customFont.isRTL) text = text.split("").reverse().join("");
+
+ var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
+ for (var i=0; i<text.length; i++) {
+ var glyph = this.getGlyph(customFont, text, i);
+ var scale = fontSize / customFont.fontFace.unitsPerEm;
+ ctx.translate(this.x, this.y);
+ ctx.scale(scale, -scale);
+ var lw = ctx.lineWidth;
+ ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
+ if (fontStyle == 'italic') ctx.transform(1, 0, .4, 1, 0, 0);
+ glyph.render(ctx);
+ if (fontStyle == 'italic') ctx.transform(1, 0, -.4, 1, 0, 0);
+ ctx.lineWidth = lw;
+ ctx.scale(1/scale, -1/scale);
+ ctx.translate(-this.x, -this.y);
+
+ this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
+ if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
+ this.x += dx[i];
+ }
+ }
+ return;
+ }
+
+ if (ctx.strokeStyle != '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
+ if (ctx.fillStyle != '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
+ }
+
+ this.getText = function() {
+ // OVERRIDE ME
+ }
+
+ this.measureText = function(ctx) {
+ var customFont = this.parent.style('font-family').Definition.getDefinition();
+ if (customFont != null) {
+ var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
+ var measure = 0;
+ var text = this.getText();
+ if (customFont.isRTL) text = text.split("").reverse().join("");
+ var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
+ for (var i=0; i<text.length; i++) {
+ var glyph = this.getGlyph(customFont, text, i);
+ measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
+ if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
+ measure += dx[i];
+ }
+ }
+ return measure;
+ }
+
+ var textToMeasure = svg.compressSpaces(this.getText());
+ if (!ctx.measureText) return textToMeasure.length * 10;
+
+ ctx.save();
+ this.setContext(ctx);
+ var width = ctx.measureText(textToMeasure).width;
+ ctx.restore();
+ return width;
+ }
+ }
+ svg.Element.TextElementBase.prototype = new svg.Element.RenderedElementBase;
+
+ // tspan
+ svg.Element.tspan = function(node) {
+ this.base = svg.Element.TextElementBase;
+ this.base(node);
+
+ this.text = node.nodeType == 3 ? node.nodeValue : // text
+ node.childNodes.length > 0 ? node.childNodes[0].nodeValue : // element
+ node.text;
+ this.getText = function() {
+ return this.text;
+ }
+ }
+ svg.Element.tspan.prototype = new svg.Element.TextElementBase;
+
+ // tref
+ svg.Element.tref = function(node) {
+ this.base = svg.Element.TextElementBase;
+ this.base(node);
+
+ this.getText = function() {
+ var element = this.attribute('xlink:href').Definition.getDefinition();
+ if (element != null) return element.children[0].getText();
+ }
+ }
+ svg.Element.tref.prototype = new svg.Element.TextElementBase;
+
+ // a element
+ svg.Element.a = function(node) {
+ this.base = svg.Element.TextElementBase;
+ this.base(node);
+
+ this.hasText = true;
+ for (var i=0; i<node.childNodes.length; i++) {
+ if (node.childNodes[i].nodeType != 3) this.hasText = false;
+ }
+
+ // this might contain text
+ this.text = this.hasText ? node.childNodes[0].nodeValue : '';
+ this.getText = function() {
+ return this.text;
+ }
+
+ this.baseRenderChildren = this.renderChildren;
+ this.renderChildren = function(ctx) {
+ if (this.hasText) {
+ // render as text element
+ this.baseRenderChildren(ctx);
+ var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
+ svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.Length.toPixels('y'), this.x + this.measureText(ctx), this.y));
+ }
+ else {
+ // render as temporary group
+ var g = new svg.Element.g();
+ g.children = this.children;
+ g.parent = this;
+ g.render(ctx);
+ }
+ }
+
+ this.onclick = function() {
+ window.open(this.attribute('xlink:href').value);
+ }
+
+ this.onmousemove = function() {
+ svg.ctx.canvas.style.cursor = 'pointer';
+ }
+ }
+ svg.Element.a.prototype = new svg.Element.TextElementBase;
+
+ // image element
+ svg.Element.image = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ svg.Images.push(this);
+ this.img = document.createElement('img');
+ this.loaded = false;
+ var that = this;
+ this.img.onload = function() { that.loaded = true; }
+ this.img.src = this.attribute('xlink:href').value;
+
+ this.renderChildren = function(ctx) {
+ var x = this.attribute('x').Length.toPixels('x');
+ var y = this.attribute('y').Length.toPixels('y');
+
+ var width = this.attribute('width').Length.toPixels('x');
+ var height = this.attribute('height').Length.toPixels('y');
+ if (width == 0 || height == 0) return;
+
+ ctx.save();
+ ctx.translate(x, y);
+ svg.AspectRatio(ctx,
+ this.attribute('preserveAspectRatio').value,
+ width,
+ this.img.width,
+ height,
+ this.img.height,
+ 0,
+ 0);
+ ctx.drawImage(this.img, 0, 0);
+ ctx.restore();
+ }
+ }
+ svg.Element.image.prototype = new svg.Element.RenderedElementBase;
+
+ // group element
+ svg.Element.g = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.getBoundingBox = function() {
+ var bb = new svg.BoundingBox();
+ for (var i=0; i<this.children.length; i++) {
+ bb.addBoundingBox(this.children[i].getBoundingBox());
+ }
+ return bb;
+ };
+ }
+ svg.Element.g.prototype = new svg.Element.RenderedElementBase;
+
+ // symbol element
+ svg.Element.symbol = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.baseSetContext = this.setContext;
+ this.setContext = function(ctx) {
+ this.baseSetContext(ctx);
+
+ // viewbox
+ if (this.attribute('viewBox').hasValue()) {
+ var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
+ var minX = viewBox[0];
+ var minY = viewBox[1];
+ width = viewBox[2];
+ height = viewBox[3];
+
+ svg.AspectRatio(ctx,
+ this.attribute('preserveAspectRatio').value,
+ this.attribute('width').Length.toPixels('x'),
+ width,
+ this.attribute('height').Length.toPixels('y'),
+ height,
+ minX,
+ minY);
+
+ svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
+ }
+ }
+ }
+ svg.Element.symbol.prototype = new svg.Element.RenderedElementBase;
+
+ // style element
+ svg.Element.style = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ // text, or spaces then CDATA
+ var css = node.childNodes[0].nodeValue + (node.childNodes.length > 1 ? node.childNodes[1].nodeValue : '');
+ css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, ''); // remove comments
+ css = svg.compressSpaces(css); // replace whitespace
+ var cssDefs = css.split('}');
+ for (var i=0; i<cssDefs.length; i++) {
+ if (svg.trim(cssDefs[i]) != '') {
+ var cssDef = cssDefs[i].split('{');
+ var cssClasses = cssDef[0].split(',');
+ var cssProps = cssDef[1].split(';');
+ for (var j=0; j<cssClasses.length; j++) {
+ var cssClass = svg.trim(cssClasses[j]);
+ if (cssClass != '') {
+ var props = {};
+ for (var k=0; k<cssProps.length; k++) {
+ var prop = cssProps[k].indexOf(':');
+ var name = cssProps[k].substr(0, prop);
+ var value = cssProps[k].substr(prop + 1, cssProps[k].length - prop);
+ if (name != null && value != null) {
+ props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
+ }
+ }
+ svg.Styles[cssClass] = props;
+ if (cssClass == '@font-face') {
+ var fontFamily = props['font-family'].value.replace(/"/g,'');
+ var srcs = props['src'].value.split(',');
+ for (var s=0; s<srcs.length; s++) {
+ if (srcs[s].indexOf('format("svg")') > 0) {
+ var urlStart = srcs[s].indexOf('url');
+ var urlEnd = srcs[s].indexOf(')', urlStart);
+ var url = srcs[s].substr(urlStart + 5, urlEnd - urlStart - 6);
+ var doc = svg.parseXml(svg.ajax(url));
+ var fonts = doc.getElementsByTagName('font');
+ for (var f=0; f<fonts.length; f++) {
+ var font = svg.CreateElement(fonts[f]);
+ svg.Definitions[fontFamily] = font;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ svg.Element.style.prototype = new svg.Element.ElementBase;
+
+ // use element
+ svg.Element.use = function(node) {
+ this.base = svg.Element.RenderedElementBase;
+ this.base(node);
+
+ this.baseSetContext = this.setContext;
+ this.setContext = function(ctx) {
+ this.baseSetContext(ctx);
+ if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').Length.toPixels('x'), 0);
+ if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').Length.toPixels('y'));
+ }
+
+ this.getDefinition = function() {
+ var element = this.attribute('xlink:href').Definition.getDefinition();
+ if (this.attribute('width').hasValue()) element.attribute('width', true).value = this.attribute('width').value;
+ if (this.attribute('height').hasValue()) element.attribute('height', true).value = this.attribute('height').value;
+ return element;
+ }
+
+ this.path = function(ctx) {
+ var element = this.getDefinition();
+ if (element != null) element.path(ctx);
+ }
+
+ this.renderChildren = function(ctx) {
+ var element = this.getDefinition();
+ if (element != null) element.render(ctx);
+ }
+ }
+ svg.Element.use.prototype = new svg.Element.RenderedElementBase;
+
+ // mask element
+ svg.Element.mask = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.apply = function(ctx, element) {
+ // render as temp svg
+ var x = this.attribute('x').Length.toPixels('x');
+ var y = this.attribute('y').Length.toPixels('y');
+ var width = this.attribute('width').Length.toPixels('x');
+ var height = this.attribute('height').Length.toPixels('y');
+
+ // temporarily remove mask to avoid recursion
+ var mask = element.attribute('mask').value;
+ element.attribute('mask').value = '';
+
+ var cMask = document.createElement('canvas');
+ cMask.width = x + width;
+ cMask.height = y + height;
+ var maskCtx = cMask.getContext('2d');
+ this.renderChildren(maskCtx);
+
+ var c = document.createElement('canvas');
+ c.width = x + width;
+ c.height = y + height;
+ var tempCtx = c.getContext('2d');
+ element.render(tempCtx);
+ tempCtx.globalCompositeOperation = 'destination-in';
+ tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
+ tempCtx.fillRect(0, 0, x + width, y + height);
+
+ ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
+ ctx.fillRect(0, 0, x + width, y + height);
+
+ // reassign mask
+ element.attribute('mask').value = mask;
+ }
+
+ this.render = function(ctx) {
+ // NO RENDER
+ }
+ }
+ svg.Element.mask.prototype = new svg.Element.ElementBase;
+
+ // clip element
+ svg.Element.clipPath = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.apply = function(ctx) {
+ for (var i=0; i<this.children.length; i++) {
+ if (this.children[i].path) {
+ this.children[i].path(ctx);
+ ctx.clip();
+ }
+ }
+ }
+
+ this.render = function(ctx) {
+ // NO RENDER
+ }
+ }
+ svg.Element.clipPath.prototype = new svg.Element.ElementBase;
+
+ // filters
+ svg.Element.filter = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ this.apply = function(ctx, element) {
+ // render as temp svg
+ var bb = element.getBoundingBox();
+ var x = this.attribute('x').Length.toPixels('x');
+ var y = this.attribute('y').Length.toPixels('y');
+ if (x == 0 || y == 0) {
+ x = bb.x1;
+ y = bb.y1;
+ }
+ var width = this.attribute('width').Length.toPixels('x');
+ var height = this.attribute('height').Length.toPixels('y');
+ if (width == 0 || height == 0) {
+ width = bb.width();
+ height = bb.height();
+ }
+
+ // temporarily remove filter to avoid recursion
+ var filter = element.style('filter').value;
+ element.style('filter').value = '';
+
+ // max filter distance
+ var extraPercent = .20;
+ var px = extraPercent * width;
+ var py = extraPercent * height;
+
+ var c = document.createElement('canvas');
+ c.width = width + 2*px;
+ c.height = height + 2*py;
+ var tempCtx = c.getContext('2d');
+ tempCtx.translate(-x + px, -y + py);
+ element.render(tempCtx);
+
+ // apply filters
+ for (var i=0; i<this.children.length; i++) {
+ this.children[i].apply(tempCtx, 0, 0, width + 2*px, height + 2*py);
+ }
+
+ // render on me
+ ctx.drawImage(c, 0, 0, width + 2*px, height + 2*py, x - px, y - py, width + 2*px, height + 2*py);
+
+ // reassign filter
+ element.style('filter', true).value = filter;
+ }
+
+ this.render = function(ctx) {
+ // NO RENDER
+ }
+ }
+ svg.Element.filter.prototype = new svg.Element.ElementBase;
+
+ svg.Element.feGaussianBlur = function(node) {
+ this.base = svg.Element.ElementBase;
+ this.base(node);
+
+ function make_fgauss(sigma) {
+ sigma = Math.max(sigma, 0.01);
+ var len = Math.ceil(sigma * 4.0) + 1;
+ mask = [];
+ for (var i = 0; i < len; i++) {
+ mask[i] = Math.exp(-0.5 * (i / sigma) * (i / sigma));
+ }
+ return mask;
+ }
+
+ function normalize(mask) {
+ var sum = 0;
+ for (var i = 1; i < mask.length; i++) {
+ sum += Math.abs(mask[i]);
+ }
+ sum = 2 * sum + Math.abs(mask[0]);
+ for (var i = 0; i < mask.length; i++) {
+ mask[i] /= sum;
+ }
+ return mask;
+ }
+
+ function convolve_even(src, dst, mask, width, height) {
+ for (var y = 0; y < height; y++) {
+ for (var x = 0; x < width; x++) {
+ var a = imGet(src, x, y, width, height, 3)/255;
+ for (var rgba = 0; rgba < 4; rgba++) {
+ var sum = mask[0] * (a==0?255:imGet(src, x, y, width, height, rgba)) * (a==0||rgba==3?1:a);
+ for
<TRUNCATED>