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source: other-projects/nz-flag-design/trunk/main-form/lib/canvg/canvg.js@ 29567

Last change on this file since 29567 was 29567, checked in by davidb, 9 years ago
Addition of further library (to support exporting SVG to PNG) on the iterative-design page
File size: 99.6 KB

Line
1	/*
2	* canvg.js - Javascript SVG parser and renderer on Canvas
3	* MIT Licensed
4	* Gabe Lerner ([email protected])
5	* http://code.google.com/p/canvg/
6	*
7	* Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
8	*/
9	(function(){
10	// canvg(target, s)
11	// empty parameters: replace all 'svg' elements on page with 'canvas' elements
12	// target: canvas element or the id of a canvas element
13	// s: svg string, url to svg file, or xml document
14	// opts: optional hash of options
15	// ignoreMouse: true => ignore mouse events
16	// ignoreAnimation: true => ignore animations
17	// ignoreDimensions: true => does not try to resize canvas
18	// ignoreClear: true => does not clear canvas
19	// offsetX: int => draws at a x offset
20	// offsetY: int => draws at a y offset
21	// scaleWidth: int => scales horizontally to width
22	// scaleHeight: int => scales vertically to height
23	// renderCallback: function => will call the function after the first render is completed
24	// forceRedraw: function => will call the function on every frame, if it returns true, will redraw
25	this.canvg = function (target, s, opts) {
26	// no parameters
27	if (target == null && s == null && opts == null) {
28	var svgTags = document.querySelectorAll('svg');
29	for (var i=0; i<svgTags.length; i++) {
30	var svgTag = svgTags[i];
31	var c = document.createElement('canvas');
32	c.width = svgTag.clientWidth;
33	c.height = svgTag.clientHeight;
34	svgTag.parentNode.insertBefore(c, svgTag);
35	svgTag.parentNode.removeChild(svgTag);
36	var div = document.createElement('div');
37	div.appendChild(svgTag);
38	canvg(c, div.innerHTML);
39	}
40	return;
41	}
42
43	if (typeof target == 'string') {
44	target = document.getElementById(target);
45	}
46
47	// store class on canvas
48	if (target.svg != null) target.svg.stop();
49	var svg = build(opts \|\| {});
50	// on i.e. 8 for flash canvas, we can't assign the property so check for it
51	if (!(target.childNodes.length == 1 && target.childNodes[0].nodeName == 'OBJECT')) target.svg = svg;
52
53	var ctx = target.getContext('2d');
54	if (typeof(s.documentElement) != 'undefined') {
55	// load from xml doc
56	svg.loadXmlDoc(ctx, s);
57	}
58	else if (s.substr(0,1) == '<') {
59	// load from xml string
60	svg.loadXml(ctx, s);
61	}
62	else {
63	// load from url
64	svg.load(ctx, s);
65	}
66	}
67
68	function build(opts) {
69	var svg = { opts: opts };
70
71	svg.FRAMERATE = 30;
72	svg.MAX_VIRTUAL_PIXELS = 30000;
73
74	svg.log = function(msg) {};
75	if (svg.opts['log'] == true && typeof(console) != 'undefined') {
76	svg.log = function(msg) { console.log(msg); };
77	};
78
79	// globals
80	svg.init = function(ctx) {
81	var uniqueId = 0;
82	svg.UniqueId = function () { uniqueId++; return 'canvg' + uniqueId; };
83	svg.Definitions = {};
84	svg.Styles = {};
85	svg.Animations = [];
86	svg.Images = [];
87	svg.ctx = ctx;
88	svg.ViewPort = new (function () {
89	this.viewPorts = [];
90	this.Clear = function() { this.viewPorts = []; }
91	this.SetCurrent = function(width, height) { this.viewPorts.push({ width: width, height: height }); }
92	this.RemoveCurrent = function() { this.viewPorts.pop(); }
93	this.Current = function() { return this.viewPorts[this.viewPorts.length - 1]; }
94	this.width = function() { return this.Current().width; }
95	this.height = function() { return this.Current().height; }
96	this.ComputeSize = function(d) {
97	if (d != null && typeof(d) == 'number') return d;
98	if (d == 'x') return this.width();
99	if (d == 'y') return this.height();
100	return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
101	}
102	});
103	}
104	svg.init();
105
106	// images loaded
107	svg.ImagesLoaded = function() {
108	for (var i=0; i<svg.Images.length; i++) {
109	if (!svg.Images[i].loaded) return false;
110	}
111	return true;
112	}
113
114	// trim
115	svg.trim = function(s) { return s.replace(/^\s+\|\s+$/g, ''); }
116
117	// compress spaces
118	svg.compressSpaces = function(s) { return s.replace(/[\s\r\t\n]+/gm,' '); }
119
120	// ajax
121	svg.ajax = function(url) {
122	var AJAX;
123	if(window.XMLHttpRequest){AJAX=new XMLHttpRequest();}
124	else{AJAX=new ActiveXObject('Microsoft.XMLHTTP');}
125	if(AJAX){
126	AJAX.open('GET',url,false);
127	AJAX.send(null);
128	return AJAX.responseText;
129	}
130	return null;
131	}
132
133	// parse xml
134	svg.parseXml = function(xml) {
135	if (typeof(Windows) != 'undefined' && typeof(Windows.Data) != 'undefined' && typeof(Windows.Data.Xml) != 'undefined') {
136	var xmlDoc = new Windows.Data.Xml.Dom.XmlDocument();
137	var settings = new Windows.Data.Xml.Dom.XmlLoadSettings();
138	settings.prohibitDtd = false;
139	xmlDoc.loadXml(xml, settings);
140	return xmlDoc;
141	}
142	else if (window.DOMParser)
143	{
144	var parser = new DOMParser();
145	return parser.parseFromString(xml, 'text/xml');
146	}
147	else
148	{
149	xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
150	var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
151	xmlDoc.async = 'false';
152	xmlDoc.loadXML(xml);
153	return xmlDoc;
154	}
155	}
156
157	svg.Property = function(name, value) {
158	this.name = name;
159	this.value = value;
160	}
161	svg.Property.prototype.getValue = function() {
162	return this.value;
163	}
164
165	svg.Property.prototype.hasValue = function() {
166	return (this.value != null && this.value !== '');
167	}
168
169	// return the numerical value of the property
170	svg.Property.prototype.numValue = function() {
171	if (!this.hasValue()) return 0;
172
173	var n = parseFloat(this.value);
174	if ((this.value + '').match(/%$/)) {
175	n = n / 100.0;
176	}
177	return n;
178	}
179
180	svg.Property.prototype.valueOrDefault = function(def) {
181	if (this.hasValue()) return this.value;
182	return def;
183	}
184
185	svg.Property.prototype.numValueOrDefault = function(def) {
186	if (this.hasValue()) return this.numValue();
187	return def;
188	}
189
190	// color extensions
191	// augment the current color value with the opacity
192	svg.Property.prototype.addOpacity = function(opacityProp) {
193	var newValue = this.value;
194	if (opacityProp.value != null && opacityProp.value != '' && typeof(this.value)=='string') { // can only add opacity to colors, not patterns
195	var color = new RGBColor(this.value);
196	if (color.ok) {
197	newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacityProp.numValue() + ')';
198	}
199	}
200	return new svg.Property(this.name, newValue);
201	}
202
203	// definition extensions
204	// get the definition from the definitions table
205	svg.Property.prototype.getDefinition = function() {
206	var name = this.value.match(/#([^\)'"]+)/);
207	if (name) { name = name[1]; }
208	if (!name) { name = this.value; }
209	return svg.Definitions[name];
210	}
211
212	svg.Property.prototype.isUrlDefinition = function() {
213	return this.value.indexOf('url(') == 0
214	}
215
216	svg.Property.prototype.getFillStyleDefinition = function(e, opacityProp) {
217	var def = this.getDefinition();
218
219	// gradient
220	if (def != null && def.createGradient) {
221	return def.createGradient(svg.ctx, e, opacityProp);
222	}
223
224	// pattern
225	if (def != null && def.createPattern) {
226	if (def.getHrefAttribute().hasValue()) {
227	var pt = def.attribute('patternTransform');
228	def = def.getHrefAttribute().getDefinition();
229	if (pt.hasValue()) { def.attribute('patternTransform', true).value = pt.value; }
230	}
231	return def.createPattern(svg.ctx, e);
232	}
233
234	return null;
235	}
236
237	// length extensions
238	svg.Property.prototype.getDPI = function(viewPort) {
239	return 96.0; // TODO: compute?
240	}
241
242	svg.Property.prototype.getEM = function(viewPort) {
243	var em = 12;
244
245	var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
246	if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);
247
248	return em;
249	}
250
251	svg.Property.prototype.getUnits = function() {
252	var s = this.value+'';
253	return s.replace(/[0-9\.\-]/g,'');
254	}
255
256	// get the length as pixels
257	svg.Property.prototype.toPixels = function(viewPort, processPercent) {
258	if (!this.hasValue()) return 0;
259	var s = this.value+'';
260	if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
261	if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
262	if (s.match(/px$/)) return this.numValue();
263	if (s.match(/pt$/)) return this.numValue() * this.getDPI(viewPort) * (1.0 / 72.0);
264	if (s.match(/pc$/)) return this.numValue() * 15;
265	if (s.match(/cm$/)) return this.numValue() * this.getDPI(viewPort) / 2.54;
266	if (s.match(/mm$/)) return this.numValue() * this.getDPI(viewPort) / 25.4;
267	if (s.match(/in$/)) return this.numValue() * this.getDPI(viewPort);
268	if (s.match(/%$/)) return this.numValue() * svg.ViewPort.ComputeSize(viewPort);
269	var n = this.numValue();
270	if (processPercent && n < 1.0) return n * svg.ViewPort.ComputeSize(viewPort);
271	return n;
272	}
273
274	// time extensions
275	// get the time as milliseconds
276	svg.Property.prototype.toMilliseconds = function() {
277	if (!this.hasValue()) return 0;
278	var s = this.value+'';
279	if (s.match(/s$/)) return this.numValue() * 1000;
280	if (s.match(/ms$/)) return this.numValue();
281	return this.numValue();
282	}
283
284	// angle extensions
285	// get the angle as radians
286	svg.Property.prototype.toRadians = function() {
287	if (!this.hasValue()) return 0;
288	var s = this.value+'';
289	if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
290	if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
291	if (s.match(/rad$/)) return this.numValue();
292	return this.numValue() * (Math.PI / 180.0);
293	}
294
295	// text extensions
296	// get the text baseline
297	var textBaselineMapping = {
298	'baseline': 'alphabetic',
299	'before-edge': 'top',
300	'text-before-edge': 'top',
301	'middle': 'middle',
302	'central': 'middle',
303	'after-edge': 'bottom',
304	'text-after-edge': 'bottom',
305	'ideographic': 'ideographic',
306	'alphabetic': 'alphabetic',
307	'hanging': 'hanging',
308	'mathematical': 'alphabetic'
309	};
310	svg.Property.prototype.toTextBaseline = function () {
311	if (!this.hasValue()) return null;
312	return textBaselineMapping[this.value];
313	}
314
315	// fonts
316	svg.Font = new (function() {
317	this.Styles = 'normal\|italic\|oblique\|inherit';
318	this.Variants = 'normal\|small-caps\|inherit';
319	this.Weights = 'normal\|bold\|bolder\|lighter\|100\|200\|300\|400\|500\|600\|700\|800\|900\|inherit';
320
321	this.CreateFont = function(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
322	var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
323	return {
324	fontFamily: fontFamily \|\| f.fontFamily,
325	fontSize: fontSize \|\| f.fontSize,
326	fontStyle: fontStyle \|\| f.fontStyle,
327	fontWeight: fontWeight \|\| f.fontWeight,
328	fontVariant: fontVariant \|\| f.fontVariant,
329	toString: function () { return [this.fontStyle, this.fontVariant, this.fontWeight, this.fontSize, this.fontFamily].join(' ') }
330	}
331	}
332
333	var that = this;
334	this.Parse = function(s) {
335	var f = {};
336	var d = svg.trim(svg.compressSpaces(s \|\| '')).split(' ');
337	var set = { fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false }
338	var ff = '';
339	for (var i=0; i<d.length; i++) {
340	if (!set.fontStyle && that.Styles.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontStyle = d[i]; set.fontStyle = true; }
341	else if (!set.fontVariant && that.Variants.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true; }
342	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; }
343	else if (!set.fontSize) { if (d[i] != 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true; }
344	else { if (d[i] != 'inherit') ff += d[i]; }
345	} if (ff != '') f.fontFamily = ff;
346	return f;
347	}
348	});
349
350	// points and paths
351	svg.ToNumberArray = function(s) {
352	var a = svg.trim(svg.compressSpaces((s \|\| '').replace(/,/g, ' '))).split(' ');
353	for (var i=0; i<a.length; i++) {
354	a[i] = parseFloat(a[i]);
355	}
356	return a;
357	}
358	svg.Point = function(x, y) {
359	this.x = x;
360	this.y = y;
361	}
362	svg.Point.prototype.angleTo = function(p) {
363	return Math.atan2(p.y - this.y, p.x - this.x);
364	}
365
366	svg.Point.prototype.applyTransform = function(v) {
367	var xp = this.x * v[0] + this.y * v[2] + v[4];
368	var yp = this.x * v[1] + this.y * v[3] + v[5];
369	this.x = xp;
370	this.y = yp;
371	}
372
373	svg.CreatePoint = function(s) {
374	var a = svg.ToNumberArray(s);
375	return new svg.Point(a[0], a[1]);
376	}
377	svg.CreatePath = function(s) {
378	var a = svg.ToNumberArray(s);
379	var path = [];
380	for (var i=0; i<a.length; i+=2) {
381	path.push(new svg.Point(a[i], a[i+1]));
382	}
383	return path;
384	}
385
386	// bounding box
387	svg.BoundingBox = function(x1, y1, x2, y2) { // pass in initial points if you want
388	this.x1 = Number.NaN;
389	this.y1 = Number.NaN;
390	this.x2 = Number.NaN;
391	this.y2 = Number.NaN;
392
393	this.x = function() { return this.x1; }
394	this.y = function() { return this.y1; }
395	this.width = function() { return this.x2 - this.x1; }
396	this.height = function() { return this.y2 - this.y1; }
397
398	this.addPoint = function(x, y) {
399	if (x != null) {
400	if (isNaN(this.x1) \|\| isNaN(this.x2)) {
401	this.x1 = x;
402	this.x2 = x;
403	}
404	if (x < this.x1) this.x1 = x;
405	if (x > this.x2) this.x2 = x;
406	}
407
408	if (y != null) {
409	if (isNaN(this.y1) \|\| isNaN(this.y2)) {
410	this.y1 = y;
411	this.y2 = y;
412	}
413	if (y < this.y1) this.y1 = y;
414	if (y > this.y2) this.y2 = y;
415	}
416	}
417	this.addX = function(x) { this.addPoint(x, null); }
418	this.addY = function(y) { this.addPoint(null, y); }
419
420	this.addBoundingBox = function(bb) {
421	this.addPoint(bb.x1, bb.y1);
422	this.addPoint(bb.x2, bb.y2);
423	}
424
425	this.addQuadraticCurve = function(p0x, p0y, p1x, p1y, p2x, p2y) {
426	var cp1x = p0x + 2/3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
427	var cp1y = p0y + 2/3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
428	var cp2x = cp1x + 1/3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
429	var cp2y = cp1y + 1/3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
430	this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
431	}
432
433	this.addBezierCurve = function(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
434	// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
435	var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
436	this.addPoint(p0[0], p0[1]);
437	this.addPoint(p3[0], p3[1]);
438
439	for (i=0; i<=1; i++) {
440	var f = function(t) {
441	return Math.pow(1-t, 3) * p0[i]
442	+ 3 * Math.pow(1-t, 2) * t * p1[i]
443	+ 3 * (1-t) * Math.pow(t, 2) * p2[i]
444	+ Math.pow(t, 3) * p3[i];
445	}
446
447	var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
448	var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
449	var c = 3 * p1[i] - 3 * p0[i];
450
451	if (a == 0) {
452	if (b == 0) continue;
453	var t = -c / b;
454	if (0 < t && t < 1) {
455	if (i == 0) this.addX(f(t));
456	if (i == 1) this.addY(f(t));
457	}
458	continue;
459	}
460
461	var b2ac = Math.pow(b, 2) - 4 * c * a;
462	if (b2ac < 0) continue;
463	var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
464	if (0 < t1 && t1 < 1) {
465	if (i == 0) this.addX(f(t1));
466	if (i == 1) this.addY(f(t1));
467	}
468	var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
469	if (0 < t2 && t2 < 1) {
470	if (i == 0) this.addX(f(t2));
471	if (i == 1) this.addY(f(t2));
472	}
473	}
474	}
475
476	this.isPointInBox = function(x, y) {
477	return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
478	}
479
480	this.addPoint(x1, y1);
481	this.addPoint(x2, y2);
482	}
483
484	// transforms
485	svg.Transform = function(v) {
486	var that = this;
487	this.Type = {}
488
489	// translate
490	this.Type.translate = function(s) {
491	this.p = svg.CreatePoint(s);
492	this.apply = function(ctx) {
493	ctx.translate(this.p.x \|\| 0.0, this.p.y \|\| 0.0);
494	}
495	this.unapply = function(ctx) {
496	ctx.translate(-1.0 * this.p.x \|\| 0.0, -1.0 * this.p.y \|\| 0.0);
497	}
498	this.applyToPoint = function(p) {
499	p.applyTransform([1, 0, 0, 1, this.p.x \|\| 0.0, this.p.y \|\| 0.0]);
500	}
501	}
502
503	// rotate
504	this.Type.rotate = function(s) {
505	var a = svg.ToNumberArray(s);
506	this.angle = new svg.Property('angle', a[0]);
507	this.cx = a[1] \|\| 0;
508	this.cy = a[2] \|\| 0;
509	this.apply = function(ctx) {
510	ctx.translate(this.cx, this.cy);
511	ctx.rotate(this.angle.toRadians());
512	ctx.translate(-this.cx, -this.cy);
513	}
514	this.unapply = function(ctx) {
515	ctx.translate(this.cx, this.cy);
516	ctx.rotate(-1.0 * this.angle.toRadians());
517	ctx.translate(-this.cx, -this.cy);
518	}
519	this.applyToPoint = function(p) {
520	var a = this.angle.toRadians();
521	p.applyTransform([1, 0, 0, 1, this.p.x \|\| 0.0, this.p.y \|\| 0.0]);
522	p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
523	p.applyTransform([1, 0, 0, 1, -this.p.x \|\| 0.0, -this.p.y \|\| 0.0]);
524	}
525	}
526
527	this.Type.scale = function(s) {
528	this.p = svg.CreatePoint(s);
529	this.apply = function(ctx) {
530	ctx.scale(this.p.x \|\| 1.0, this.p.y \|\| this.p.x \|\| 1.0);
531	}
532	this.unapply = function(ctx) {
533	ctx.scale(1.0 / this.p.x \|\| 1.0, 1.0 / this.p.y \|\| this.p.x \|\| 1.0);
534	}
535	this.applyToPoint = function(p) {
536	p.applyTransform([this.p.x \|\| 0.0, 0, 0, this.p.y \|\| 0.0, 0, 0]);
537	}
538	}
539
540	this.Type.matrix = function(s) {
541	this.m = svg.ToNumberArray(s);
542	this.apply = function(ctx) {
543	ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
544	}
545	this.unapply = function(ctx) {
546	var a = this.m[0];
547	var b = this.m[2];
548	var c = this.m[4];
549	var d = this.m[1];
550	var e = this.m[3];
551	var f = this.m[5];
552	var g = 0.0;
553	var h = 0.0;
554	var i = 1.0;
555	var det = 1 / (a(ei-fh)-b(di-fg)+c(dh-e*g));
556	ctx.transform(
557	det(ei-f*h),
558	det(fg-d*i),
559	det(ch-b*i),
560	det(ai-c*g),
561	det(bf-c*e),
562	det(cd-a*f)
563	);
564	}
565	this.applyToPoint = function(p) {
566	p.applyTransform(this.m);
567	}
568	}
569
570	this.Type.SkewBase = function(s) {
571	this.base = that.Type.matrix;
572	this.base(s);
573	this.angle = new svg.Property('angle', s);
574	}
575	this.Type.SkewBase.prototype = new this.Type.matrix;
576
577	this.Type.skewX = function(s) {
578	this.base = that.Type.SkewBase;
579	this.base(s);
580	this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
581	}
582	this.Type.skewX.prototype = new this.Type.SkewBase;
583
584	this.Type.skewY = function(s) {
585	this.base = that.Type.SkewBase;
586	this.base(s);
587	this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
588	}
589	this.Type.skewY.prototype = new this.Type.SkewBase;
590
591	this.transforms = [];
592
593	this.apply = function(ctx) {
594	for (var i=0; i<this.transforms.length; i++) {
595	this.transforms[i].apply(ctx);
596	}
597	}
598
599	this.unapply = function(ctx) {
600	for (var i=this.transforms.length-1; i>=0; i--) {
601	this.transforms[i].unapply(ctx);
602	}
603	}
604
605	this.applyToPoint = function(p) {
606	for (var i=0; i<this.transforms.length; i++) {
607	this.transforms[i].applyToPoint(p);
608	}
609	}
610
611	var data = svg.trim(svg.compressSpaces(v)).replace(/\)([a-zA-Z])/g, ') $1').replace(/\)(\s?,\s?)/g,') ').split(/\s(?=[a-z])/);
612	for (var i=0; i<data.length; i++) {
613	var type = svg.trim(data[i].split('(')[0]);
614	var s = data[i].split('(')[1].replace(')','');
615	var transform = new this.Type[type](s);
616	transform.type = type;
617	this.transforms.push(transform);
618	}
619	}
620
621	// aspect ratio
622	svg.AspectRatio = function(ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
623	// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
624	aspectRatio = svg.compressSpaces(aspectRatio);
625	aspectRatio = aspectRatio.replace(/^defer\s/,''); // ignore defer
626	var align = aspectRatio.split(' ')[0] \|\| 'xMidYMid';
627	var meetOrSlice = aspectRatio.split(' ')[1] \|\| 'meet';
628
629	// calculate scale
630	var scaleX = width / desiredWidth;
631	var scaleY = height / desiredHeight;
632	var scaleMin = Math.min(scaleX, scaleY);
633	var scaleMax = Math.max(scaleX, scaleY);
634	if (meetOrSlice == 'meet') { desiredWidth = scaleMin; desiredHeight = scaleMin; }
635	if (meetOrSlice == 'slice') { desiredWidth = scaleMax; desiredHeight = scaleMax; }
636
637	refX = new svg.Property('refX', refX);
638	refY = new svg.Property('refY', refY);
639	if (refX.hasValue() && refY.hasValue()) {
640	ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
641	}
642	else {
643	// align
644	if (align.match(/^xMid/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) \|\| (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
645	if (align.match(/YMid$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) \|\| (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
646	if (align.match(/^xMax/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) \|\| (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width - desiredWidth, 0);
647	if (align.match(/YMax$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) \|\| (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height - desiredHeight);
648	}
649
650	// scale
651	if (align == 'none') ctx.scale(scaleX, scaleY);
652	else if (meetOrSlice == 'meet') ctx.scale(scaleMin, scaleMin);
653	else if (meetOrSlice == 'slice') ctx.scale(scaleMax, scaleMax);
654
655	// translate
656	ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
657	}
658
659	// elements
660	svg.Element = {}
661
662	svg.EmptyProperty = new svg.Property('EMPTY', '');
663
664	svg.Element.ElementBase = function(node) {
665	this.attributes = {};
666	this.styles = {};
667	this.children = [];
668
669	// get or create attribute
670	this.attribute = function(name, createIfNotExists) {
671	var a = this.attributes[name];
672	if (a != null) return a;
673
674	if (createIfNotExists == true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
675	return a \|\| svg.EmptyProperty;
676	}
677
678	this.getHrefAttribute = function() {
679	for (var a in this.attributes) {
680	if (a.match(/:href$/)) {
681	return this.attributes[a];
682	}
683	}
684	return svg.EmptyProperty;
685	}
686
687	// get or create style, crawls up node tree
688	this.style = function(name, createIfNotExists, skipAncestors) {
689	var s = this.styles[name];
690	if (s != null) return s;
691
692	var a = this.attribute(name);
693	if (a != null && a.hasValue()) {
694	this.styles[name] = a; // move up to me to cache
695	return a;
696	}
697
698	if (skipAncestors != true) {
699	var p = this.parent;
700	if (p != null) {
701	var ps = p.style(name);
702	if (ps != null && ps.hasValue()) {
703	return ps;
704	}
705	}
706	}
707
708	if (createIfNotExists == true) { s = new svg.Property(name, ''); this.styles[name] = s; }
709	return s \|\| svg.EmptyProperty;
710	}
711
712	// base render
713	this.render = function(ctx) {
714	// don't render display=none
715	if (this.style('display').value == 'none') return;
716
717	// don't render visibility=hidden
718	if (this.style('visibility').value == 'hidden') return;
719
720	ctx.save();
721	if (this.attribute('mask').hasValue()) { // mask
722	var mask = this.attribute('mask').getDefinition();
723	if (mask != null) mask.apply(ctx, this);
724	}
725	else if (this.style('filter').hasValue()) { // filter
726	var filter = this.style('filter').getDefinition();
727	if (filter != null) filter.apply(ctx, this);
728	}
729	else {
730	this.setContext(ctx);
731	this.renderChildren(ctx);
732	this.clearContext(ctx);
733	}
734	ctx.restore();
735	}
736
737	// base set context
738	this.setContext = function(ctx) {
739	// OVERRIDE ME!
740	}
741
742	// base clear context
743	this.clearContext = function(ctx) {
744	// OVERRIDE ME!
745	}
746
747	// base render children
748	this.renderChildren = function(ctx) {
749	for (var i=0; i<this.children.length; i++) {
750	this.children[i].render(ctx);
751	}
752	}
753
754	this.addChild = function(childNode, create) {
755	var child = childNode;
756	if (create) child = svg.CreateElement(childNode);
757	child.parent = this;
758	if (child.type != 'title') { this.children.push(child); }
759	}
760
761	if (node != null && node.nodeType == 1) { //ELEMENT_NODE
762	// add attributes
763	for (var i=0; i<node.attributes.length; i++) {
764	var attribute = node.attributes[i];
765	this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.nodeValue);
766	}
767
768	// add tag styles
769	var styles = svg.Styles[node.nodeName];
770	if (styles != null) {
771	for (var name in styles) {
772	this.styles[name] = styles[name];
773	}
774	}
775
776	// add class styles
777	if (this.attribute('class').hasValue()) {
778	var classes = svg.compressSpaces(this.attribute('class').value).split(' ');
779	for (var j=0; j<classes.length; j++) {
780	styles = svg.Styles['.'+classes[j]];
781	if (styles != null) {
782	for (var name in styles) {
783	this.styles[name] = styles[name];
784	}
785	}
786	styles = svg.Styles[node.nodeName+'.'+classes[j]];
787	if (styles != null) {
788	for (var name in styles) {
789	this.styles[name] = styles[name];
790	}
791	}
792	}
793	}
794
795	// add id styles
796	if (this.attribute('id').hasValue()) {
797	var styles = svg.Styles['#' + this.attribute('id').value];
798	if (styles != null) {
799	for (var name in styles) {
800	this.styles[name] = styles[name];
801	}
802	}
803	}
804
805	// add inline styles
806	if (this.attribute('style').hasValue()) {
807	var styles = this.attribute('style').value.split(';');
808	for (var i=0; i<styles.length; i++) {
809	if (svg.trim(styles[i]) != '') {
810	var style = styles[i].split(':');
811	var name = svg.trim(style[0]);
812	var value = svg.trim(style[1]);
813	this.styles[name] = new svg.Property(name, value);
814	}
815	}
816	}
817
818	// add id
819	if (this.attribute('id').hasValue()) {
820	if (svg.Definitions[this.attribute('id').value] == null) {
821	svg.Definitions[this.attribute('id').value] = this;
822	}
823	}
824
825	// add children
826	for (var i=0; i<node.childNodes.length; i++) {
827	var childNode = node.childNodes[i];
828	if (childNode.nodeType == 1) this.addChild(childNode, true); //ELEMENT_NODE
829	if (this.captureTextNodes && (childNode.nodeType == 3 \|\| childNode.nodeType == 4)) {
830	var text = childNode.nodeValue \|\| childNode.text \|\| '';
831	if (svg.trim(svg.compressSpaces(text)) != '') {
832	this.addChild(new svg.Element.tspan(childNode), false); // TEXT_NODE
833	}
834	}
835	}
836	}
837	}
838
839	svg.Element.RenderedElementBase = function(node) {
840	this.base = svg.Element.ElementBase;
841	this.base(node);
842
843	this.setContext = function(ctx) {
844	// fill
845	if (this.style('fill').isUrlDefinition()) {
846	var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
847	if (fs != null) ctx.fillStyle = fs;
848	}
849	else if (this.style('fill').hasValue()) {
850	var fillStyle = this.style('fill');
851	if (fillStyle.value == 'currentColor') fillStyle.value = this.style('color').value;
852	if (fillStyle.value != 'inherit') ctx.fillStyle = (fillStyle.value == 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
853	}
854	if (this.style('fill-opacity').hasValue()) {
855	var fillStyle = new svg.Property('fill', ctx.fillStyle);
856	fillStyle = fillStyle.addOpacity(this.style('fill-opacity'));
857	ctx.fillStyle = fillStyle.value;
858	}
859
860	// stroke
861	if (this.style('stroke').isUrlDefinition()) {
862	var fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
863	if (fs != null) ctx.strokeStyle = fs;
864	}
865	else if (this.style('stroke').hasValue()) {
866	var strokeStyle = this.style('stroke');
867	if (strokeStyle.value == 'currentColor') strokeStyle.value = this.style('color').value;
868	if (strokeStyle.value != 'inherit') ctx.strokeStyle = (strokeStyle.value == 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
869	}
870	if (this.style('stroke-opacity').hasValue()) {
871	var strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
872	strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity'));
873	ctx.strokeStyle = strokeStyle.value;
874	}
875	if (this.style('stroke-width').hasValue()) {
876	var newLineWidth = this.style('stroke-width').toPixels();
877	ctx.lineWidth = newLineWidth == 0 ? 0.001 : newLineWidth; // browsers don't respect 0
878	}
879	if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
880	if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
881	if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
882	if (this.style('stroke-dasharray').hasValue() && this.style('stroke-dasharray').value != 'none') {
883	var gaps = svg.ToNumberArray(this.style('stroke-dasharray').value);
884	if (typeof(ctx.setLineDash) != 'undefined') { ctx.setLineDash(gaps); }
885	else if (typeof(ctx.webkitLineDash) != 'undefined') { ctx.webkitLineDash = gaps; }
886	else if (typeof(ctx.mozDash) != 'undefined' && !(gaps.length==1 && gaps[0]==0)) { ctx.mozDash = gaps; }
887
888	var offset = this.style('stroke-dashoffset').numValueOrDefault(1);
889	if (typeof(ctx.lineDashOffset) != 'undefined') { ctx.lineDashOffset = offset; }
890	else if (typeof(ctx.webkitLineDashOffset) != 'undefined') { ctx.webkitLineDashOffset = offset; }
891	else if (typeof(ctx.mozDashOffset) != 'undefined') { ctx.mozDashOffset = offset; }
892	}
893
894	// font
895	if (typeof(ctx.font) != 'undefined') {
896	ctx.font = svg.Font.CreateFont(
897	this.style('font-style').value,
898	this.style('font-variant').value,
899	this.style('font-weight').value,
900	this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
901	this.style('font-family').value).toString();
902	}
903
904	// transform
905	if (this.attribute('transform').hasValue()) {
906	var transform = new svg.Transform(this.attribute('transform').value);
907	transform.apply(ctx);
908	}
909
910	// clip
911	if (this.style('clip-path', false, true).hasValue()) {
912	var clip = this.style('clip-path', false, true).getDefinition();
913	if (clip != null) clip.apply(ctx);
914	}
915
916	// opacity
917	if (this.style('opacity').hasValue()) {
918	ctx.globalAlpha = this.style('opacity').numValue();
919	}
920	}
921	}
922	svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase;
923
924	svg.Element.PathElementBase = function(node) {
925	this.base = svg.Element.RenderedElementBase;
926	this.base(node);
927
928	this.path = function(ctx) {
929	if (ctx != null) ctx.beginPath();
930	return new svg.BoundingBox();
931	}
932
933	this.renderChildren = function(ctx) {
934	this.path(ctx);
935	svg.Mouse.checkPath(this, ctx);
936	if (ctx.fillStyle != '') {
937	if (this.style('fill-rule').valueOrDefault('inherit') != 'inherit') { ctx.fill(this.style('fill-rule').value); }
938	else { ctx.fill(); }
939	}
940	if (ctx.strokeStyle != '') ctx.stroke();
941
942	var markers = this.getMarkers();
943	if (markers != null) {
944	if (this.style('marker-start').isUrlDefinition()) {
945	var marker = this.style('marker-start').getDefinition();
946	marker.render(ctx, markers[0][0], markers[0][1]);
947	}
948	if (this.style('marker-mid').isUrlDefinition()) {
949	var marker = this.style('marker-mid').getDefinition();
950	for (var i=1;i<markers.length-1;i++) {
951	marker.render(ctx, markers[i][0], markers[i][1]);
952	}
953	}
954	if (this.style('marker-end').isUrlDefinition()) {
955	var marker = this.style('marker-end').getDefinition();
956	marker.render(ctx, markers[markers.length-1][0], markers[markers.length-1][1]);
957	}
958	}
959	}
960
961	this.getBoundingBox = function() {
962	return this.path();
963	}
964
965	this.getMarkers = function() {
966	return null;
967	}
968	}
969	svg.Element.PathElementBase.prototype = new svg.Element.RenderedElementBase;
970
971	// svg element
972	svg.Element.svg = function(node) {
973	this.base = svg.Element.RenderedElementBase;
974	this.base(node);
975
976	this.baseClearContext = this.clearContext;
977	this.clearContext = function(ctx) {
978	this.baseClearContext(ctx);
979	svg.ViewPort.RemoveCurrent();
980	}
981
982	this.baseSetContext = this.setContext;
983	this.setContext = function(ctx) {
984	// initial values and defaults
985	ctx.strokeStyle = 'rgba(0,0,0,0)';
986	ctx.lineCap = 'butt';
987	ctx.lineJoin = 'miter';
988	ctx.miterLimit = 4;
989	if (typeof(ctx.font) != 'undefined' && typeof(window.getComputedStyle) != 'undefined') {
990	ctx.font = window.getComputedStyle(ctx.canvas).getPropertyValue('font');
991	}
992
993	this.baseSetContext(ctx);
994
995	// create new view port
996	if (!this.attribute('x').hasValue()) this.attribute('x', true).value = 0;
997	if (!this.attribute('y').hasValue()) this.attribute('y', true).value = 0;
998	ctx.translate(this.attribute('x').toPixels('x'), this.attribute('y').toPixels('y'));
999
1000	var width = svg.ViewPort.width();
1001	var height = svg.ViewPort.height();
1002
1003	if (!this.attribute('width').hasValue()) this.attribute('width', true).value = '100%';
1004	if (!this.attribute('height').hasValue()) this.attribute('height', true).value = '100%';
1005	if (typeof(this.root) == 'undefined') {
1006	width = this.attribute('width').toPixels('x');
1007	height = this.attribute('height').toPixels('y');
1008
1009	var x = 0;
1010	var y = 0;
1011	if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
1012	x = -this.attribute('refX').toPixels('x');
1013	y = -this.attribute('refY').toPixels('y');
1014	}
1015
1016	if (this.attribute('overflow').valueOrDefault('hidden') != 'visible') {
1017	ctx.beginPath();
1018	ctx.moveTo(x, y);
1019	ctx.lineTo(width, y);
1020	ctx.lineTo(width, height);
1021	ctx.lineTo(x, height);
1022	ctx.closePath();
1023	ctx.clip();
1024	}
1025	}
1026	svg.ViewPort.SetCurrent(width, height);
1027
1028	// viewbox
1029	if (this.attribute('viewBox').hasValue()) {
1030	var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
1031	var minX = viewBox[0];
1032	var minY = viewBox[1];
1033	width = viewBox[2];
1034	height = viewBox[3];
1035
1036	svg.AspectRatio(ctx,
1037	this.attribute('preserveAspectRatio').value,
1038	svg.ViewPort.width(),
1039	width,
1040	svg.ViewPort.height(),
1041	height,
1042	minX,
1043	minY,
1044	this.attribute('refX').value,
1045	this.attribute('refY').value);
1046
1047	svg.ViewPort.RemoveCurrent();
1048	svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
1049	}
1050	}
1051	}
1052	svg.Element.svg.prototype = new svg.Element.RenderedElementBase;
1053
1054	// rect element
1055	svg.Element.rect = function(node) {
1056	this.base = svg.Element.PathElementBase;
1057	this.base(node);
1058
1059	this.path = function(ctx) {
1060	var x = this.attribute('x').toPixels('x');
1061	var y = this.attribute('y').toPixels('y');
1062	var width = this.attribute('width').toPixels('x');
1063	var height = this.attribute('height').toPixels('y');
1064	var rx = this.attribute('rx').toPixels('x');
1065	var ry = this.attribute('ry').toPixels('y');
1066	if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
1067	if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
1068	rx = Math.min(rx, width / 2.0);
1069	ry = Math.min(ry, height / 2.0);
1070	if (ctx != null) {
1071	ctx.beginPath();
1072	ctx.moveTo(x + rx, y);
1073	ctx.lineTo(x + width - rx, y);
1074	ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
1075	ctx.lineTo(x + width, y + height - ry);
1076	ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
1077	ctx.lineTo(x + rx, y + height);
1078	ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
1079	ctx.lineTo(x, y + ry);
1080	ctx.quadraticCurveTo(x, y, x + rx, y)
1081	ctx.closePath();
1082	}
1083
1084	return new svg.BoundingBox(x, y, x + width, y + height);
1085	}
1086	}
1087	svg.Element.rect.prototype = new svg.Element.PathElementBase;
1088
1089	// circle element
1090	svg.Element.circle = function(node) {
1091	this.base = svg.Element.PathElementBase;
1092	this.base(node);
1093
1094	this.path = function(ctx) {
1095	var cx = this.attribute('cx').toPixels('x');
1096	var cy = this.attribute('cy').toPixels('y');
1097	var r = this.attribute('r').toPixels();
1098
1099	if (ctx != null) {
1100	ctx.beginPath();
1101	ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
1102	ctx.closePath();
1103	}
1104
1105	return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
1106	}
1107	}
1108	svg.Element.circle.prototype = new svg.Element.PathElementBase;
1109
1110	// ellipse element
1111	svg.Element.ellipse = function(node) {
1112	this.base = svg.Element.PathElementBase;
1113	this.base(node);
1114
1115	this.path = function(ctx) {
1116	var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
1117	var rx = this.attribute('rx').toPixels('x');
1118	var ry = this.attribute('ry').toPixels('y');
1119	var cx = this.attribute('cx').toPixels('x');
1120	var cy = this.attribute('cy').toPixels('y');
1121
1122	if (ctx != null) {
1123	ctx.beginPath();
1124	ctx.moveTo(cx, cy - ry);
1125	ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
1126	ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
1127	ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
1128	ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
1129	ctx.closePath();
1130	}
1131
1132	return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
1133	}
1134	}
1135	svg.Element.ellipse.prototype = new svg.Element.PathElementBase;
1136
1137	// line element
1138	svg.Element.line = function(node) {
1139	this.base = svg.Element.PathElementBase;
1140	this.base(node);
1141
1142	this.getPoints = function() {
1143	return [
1144	new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
1145	new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))];
1146	}
1147
1148	this.path = function(ctx) {
1149	var points = this.getPoints();
1150
1151	if (ctx != null) {
1152	ctx.beginPath();
1153	ctx.moveTo(points[0].x, points[0].y);
1154	ctx.lineTo(points[1].x, points[1].y);
1155	}
1156
1157	return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
1158	}
1159
1160	this.getMarkers = function() {
1161	var points = this.getPoints();
1162	var a = points[0].angleTo(points[1]);
1163	return [[points[0], a], [points[1], a]];
1164	}
1165	}
1166	svg.Element.line.prototype = new svg.Element.PathElementBase;
1167
1168	// polyline element
1169	svg.Element.polyline = function(node) {
1170	this.base = svg.Element.PathElementBase;
1171	this.base(node);
1172
1173	this.points = svg.CreatePath(this.attribute('points').value);
1174	this.path = function(ctx) {
1175	var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
1176	if (ctx != null) {
1177	ctx.beginPath();
1178	ctx.moveTo(this.points[0].x, this.points[0].y);
1179	}
1180	for (var i=1; i<this.points.length; i++) {
1181	bb.addPoint(this.points[i].x, this.points[i].y);
1182	if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
1183	}
1184	return bb;
1185	}
1186
1187	this.getMarkers = function() {
1188	var markers = [];
1189	for (var i=0; i<this.points.length - 1; i++) {
1190	markers.push([this.points[i], this.points[i].angleTo(this.points[i+1])]);
1191	}
1192	markers.push([this.points[this.points.length-1], markers[markers.length-1][1]]);
1193	return markers;
1194	}
1195	}
1196	svg.Element.polyline.prototype = new svg.Element.PathElementBase;
1197
1198	// polygon element
1199	svg.Element.polygon = function(node) {
1200	this.base = svg.Element.polyline;
1201	this.base(node);
1202
1203	this.basePath = this.path;
1204	this.path = function(ctx) {
1205	var bb = this.basePath(ctx);
1206	if (ctx != null) {
1207	ctx.lineTo(this.points[0].x, this.points[0].y);
1208	ctx.closePath();
1209	}
1210	return bb;
1211	}
1212	}
1213	svg.Element.polygon.prototype = new svg.Element.polyline;
1214
1215	// path element
1216	svg.Element.path = function(node) {
1217	this.base = svg.Element.PathElementBase;
1218	this.base(node);
1219
1220	var d = this.attribute('d').value;
1221	// TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
1222	d = d.replace(/,/gm,' '); // get rid of all commas
1223	d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
1224	d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
1225	d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm,'$1 $2'); // separate commands from points
1226	d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from points
1227	d = d.replace(/([0-9])([+\-])/gm,'$1 $2'); // separate digits when no comma
1228	d = d.replace(/(\.[0-9]*)(\.)/gm,'$1 $2'); // separate digits when no comma
1229	d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm,'$1 $3 $4 '); // shorthand elliptical arc path syntax
1230	d = svg.compressSpaces(d); // compress multiple spaces
1231	d = svg.trim(d);
1232	this.PathParser = new (function(d) {
1233	this.tokens = d.split(' ');
1234
1235	this.reset = function() {
1236	this.i = -1;
1237	this.command = '';
1238	this.previousCommand = '';
1239	this.start = new svg.Point(0, 0);
1240	this.control = new svg.Point(0, 0);
1241	this.current = new svg.Point(0, 0);
1242	this.points = [];
1243	this.angles = [];
1244	}
1245
1246	this.isEnd = function() {
1247	return this.i >= this.tokens.length - 1;
1248	}
1249
1250	this.isCommandOrEnd = function() {
1251	if (this.isEnd()) return true;
1252	return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
1253	}
1254
1255	this.isRelativeCommand = function() {
1256	switch(this.command)
1257	{
1258	case 'm':
1259	case 'l':
1260	case 'h':
1261	case 'v':
1262	case 'c':
1263	case 's':
1264	case 'q':
1265	case 't':
1266	case 'a':
1267	case 'z':
1268	return true;
1269	break;
1270	}
1271	return false;
1272	}
1273
1274	this.getToken = function() {
1275	this.i++;
1276	return this.tokens[this.i];
1277	}
1278
1279	this.getScalar = function() {
1280	return parseFloat(this.getToken());
1281	}
1282
1283	this.nextCommand = function() {
1284	this.previousCommand = this.command;
1285	this.command = this.getToken();
1286	}
1287
1288	this.getPoint = function() {
1289	var p = new svg.Point(this.getScalar(), this.getScalar());
1290	return this.makeAbsolute(p);
1291	}
1292
1293	this.getAsControlPoint = function() {
1294	var p = this.getPoint();
1295	this.control = p;
1296	return p;
1297	}
1298
1299	this.getAsCurrentPoint = function() {
1300	var p = this.getPoint();
1301	this.current = p;
1302	return p;
1303	}
1304
1305	this.getReflectedControlPoint = function() {
1306	if (this.previousCommand.toLowerCase() != 'c' &&
1307	this.previousCommand.toLowerCase() != 's' &&
1308	this.previousCommand.toLowerCase() != 'q' &&
1309	this.previousCommand.toLowerCase() != 't' ){
1310	return this.current;
1311	}
1312
1313	// reflect point
1314	var p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
1315	return p;
1316	}
1317
1318	this.makeAbsolute = function(p) {
1319	if (this.isRelativeCommand()) {
1320	p.x += this.current.x;
1321	p.y += this.current.y;
1322	}
1323	return p;
1324	}
1325
1326	this.addMarker = function(p, from, priorTo) {
1327	// if the last angle isn't filled in because we didn't have this point yet ...
1328	if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length-1] == null) {
1329	this.angles[this.angles.length-1] = this.points[this.points.length-1].angleTo(priorTo);
1330	}
1331	this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
1332	}
1333
1334	this.addMarkerAngle = function(p, a) {
1335	this.points.push(p);
1336	this.angles.push(a);
1337	}
1338
1339	this.getMarkerPoints = function() { return this.points; }
1340	this.getMarkerAngles = function() {
1341	for (var i=0; i<this.angles.length; i++) {
1342	if (this.angles[i] == null) {
1343	for (var j=i+1; j<this.angles.length; j++) {
1344	if (this.angles[j] != null) {
1345	this.angles[i] = this.angles[j];
1346	break;
1347	}
1348	}
1349	}
1350	}
1351	return this.angles;
1352	}
1353	})(d);
1354
1355	this.path = function(ctx) {
1356	var pp = this.PathParser;
1357	pp.reset();
1358
1359	var bb = new svg.BoundingBox();
1360	if (ctx != null) ctx.beginPath();
1361	while (!pp.isEnd()) {
1362	pp.nextCommand();
1363	switch (pp.command) {
1364	case 'M':
1365	case 'm':
1366	var p = pp.getAsCurrentPoint();
1367	pp.addMarker(p);
1368	bb.addPoint(p.x, p.y);
1369	if (ctx != null) ctx.moveTo(p.x, p.y);
1370	pp.start = pp.current;
1371	while (!pp.isCommandOrEnd()) {
1372	var p = pp.getAsCurrentPoint();
1373	pp.addMarker(p, pp.start);
1374	bb.addPoint(p.x, p.y);
1375	if (ctx != null) ctx.lineTo(p.x, p.y);
1376	}
1377	break;
1378	case 'L':
1379	case 'l':
1380	while (!pp.isCommandOrEnd()) {
1381	var c = pp.current;
1382	var p = pp.getAsCurrentPoint();
1383	pp.addMarker(p, c);
1384	bb.addPoint(p.x, p.y);
1385	if (ctx != null) ctx.lineTo(p.x, p.y);
1386	}
1387	break;
1388	case 'H':
1389	case 'h':
1390	while (!pp.isCommandOrEnd()) {
1391	var newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
1392	pp.addMarker(newP, pp.current);
1393	pp.current = newP;
1394	bb.addPoint(pp.current.x, pp.current.y);
1395	if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
1396	}
1397	break;
1398	case 'V':
1399	case 'v':
1400	while (!pp.isCommandOrEnd()) {
1401	var newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
1402	pp.addMarker(newP, pp.current);
1403	pp.current = newP;
1404	bb.addPoint(pp.current.x, pp.current.y);
1405	if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
1406	}
1407	break;
1408	case 'C':
1409	case 'c':
1410	while (!pp.isCommandOrEnd()) {
1411	var curr = pp.current;
1412	var p1 = pp.getPoint();
1413	var cntrl = pp.getAsControlPoint();
1414	var cp = pp.getAsCurrentPoint();
1415	pp.addMarker(cp, cntrl, p1);
1416	bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
1417	if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
1418	}
1419	break;
1420	case 'S':
1421	case 's':
1422	while (!pp.isCommandOrEnd()) {
1423	var curr = pp.current;
1424	var p1 = pp.getReflectedControlPoint();
1425	var cntrl = pp.getAsControlPoint();
1426	var cp = pp.getAsCurrentPoint();
1427	pp.addMarker(cp, cntrl, p1);
1428	bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
1429	if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
1430	}
1431	break;
1432	case 'Q':
1433	case 'q':
1434	while (!pp.isCommandOrEnd()) {
1435	var curr = pp.current;
1436	var cntrl = pp.getAsControlPoint();
1437	var cp = pp.getAsCurrentPoint();
1438	pp.addMarker(cp, cntrl, cntrl);
1439	bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
1440	if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
1441	}
1442	break;
1443	case 'T':
1444	case 't':
1445	while (!pp.isCommandOrEnd()) {
1446	var curr = pp.current;
1447	var cntrl = pp.getReflectedControlPoint();
1448	pp.control = cntrl;
1449	var cp = pp.getAsCurrentPoint();
1450	pp.addMarker(cp, cntrl, cntrl);
1451	bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
1452	if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
1453	}
1454	break;
1455	case 'A':
1456	case 'a':
1457	while (!pp.isCommandOrEnd()) {
1458	var curr = pp.current;
1459	var rx = pp.getScalar();
1460	var ry = pp.getScalar();
1461	var xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
1462	var largeArcFlag = pp.getScalar();
1463	var sweepFlag = pp.getScalar();
1464	var cp = pp.getAsCurrentPoint();
1465
1466	// Conversion from endpoint to center parameterization
1467	// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
1468	// x1', y1'
1469	var currp = new svg.Point(
1470	Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
1471	-Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
1472	);
1473	// adjust radii
1474	var l = Math.pow(currp.x,2)/Math.pow(rx,2)+Math.pow(currp.y,2)/Math.pow(ry,2);
1475	if (l > 1) {
1476	rx *= Math.sqrt(l);
1477	ry *= Math.sqrt(l);
1478	}
1479	// cx', cy'
1480	var s = (largeArcFlag == sweepFlag ? -1 : 1) * Math.sqrt(
1481	((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))) /
1482	(Math.pow(rx,2)Math.pow(currp.y,2)+Math.pow(ry,2)Math.pow(currp.x,2))
1483	);
1484	if (isNaN(s)) s = 0;
1485	var cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
1486	// cx, cy
1487	var centp = new svg.Point(
1488	(curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
1489	(curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
1490	);
1491	// vector magnitude
1492	var m = function(v) { return Math.sqrt(Math.pow(v[0],2) + Math.pow(v[1],2)); }
1493	// ratio between two vectors
1494	var r = function(u, v) { return (u[0]v[0]+u[1]v[1]) / (m(u)*m(v)) }
1495	// angle between two vectors
1496	var a = function(u, v) { return (u[0]v[1] < u[1]v[0] ? -1 : 1) * Math.acos(r(u,v)); }
1497	// initial angle
1498	var a1 = a([1,0], [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry]);
1499	// angle delta
1500	var u = [(currp.x-cpp.x)/rx,(currp.y-cpp.y)/ry];
1501	var v = [(-currp.x-cpp.x)/rx,(-currp.y-cpp.y)/ry];
1502	var ad = a(u, v);
1503	if (r(u,v) <= -1) ad = Math.PI;
1504	if (r(u,v) >= 1) ad = 0;
1505
1506	// for markers
1507	var dir = 1 - sweepFlag ? 1.0 : -1.0;
1508	var ah = a1 + dir * (ad / 2.0);
1509	var halfWay = new svg.Point(
1510	centp.x + rx * Math.cos(ah),
1511	centp.y + ry * Math.sin(ah)
1512	);
1513	pp.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
1514	pp.addMarkerAngle(cp, ah - dir * Math.PI);
1515
1516	bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
1517	if (ctx != null) {
1518	var r = rx > ry ? rx : ry;
1519	var sx = rx > ry ? 1 : rx / ry;
1520	var sy = rx > ry ? ry / rx : 1;
1521
1522	ctx.translate(centp.x, centp.y);
1523	ctx.rotate(xAxisRotation);
1524	ctx.scale(sx, sy);
1525	ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
1526	ctx.scale(1/sx, 1/sy);
1527	ctx.rotate(-xAxisRotation);
1528	ctx.translate(-centp.x, -centp.y);
1529	}
1530	}
1531	break;
1532	case 'Z':
1533	case 'z':
1534	if (ctx != null) ctx.closePath();
1535	pp.current = pp.start;
1536	}
1537	}
1538
1539	return bb;
1540	}
1541
1542	this.getMarkers = function() {
1543	var points = this.PathParser.getMarkerPoints();
1544	var angles = this.PathParser.getMarkerAngles();
1545
1546	var markers = [];
1547	for (var i=0; i<points.length; i++) {
1548	markers.push([points[i], angles[i]]);
1549	}
1550	return markers;
1551	}
1552	}
1553	svg.Element.path.prototype = new svg.Element.PathElementBase;
1554
1555	// pattern element
1556	svg.Element.pattern = function(node) {
1557	this.base = svg.Element.ElementBase;
1558	this.base(node);
1559
1560	this.createPattern = function(ctx, element) {
1561	var width = this.attribute('width').toPixels('x', true);
1562	var height = this.attribute('height').toPixels('y', true);
1563
1564	// render me using a temporary svg element
1565	var tempSvg = new svg.Element.svg();
1566	tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
1567	tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
1568	tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
1569	tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
1570	tempSvg.children = this.children;
1571
1572	var c = document.createElement('canvas');
1573	c.width = width;
1574	c.height = height;
1575	var cctx = c.getContext('2d');
1576	if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
1577	cctx.translate(this.attribute('x').toPixels('x', true), this.attribute('y').toPixels('y', true));
1578	}
1579	// render 3x3 grid so when we transform there's no white space on edges
1580	for (var x=-1; x<=1; x++) {
1581	for (var y=-1; y<=1; y++) {
1582	cctx.save();
1583	cctx.translate(x * c.width, y * c.height);
1584	tempSvg.render(cctx);
1585	cctx.restore();
1586	}
1587	}
1588	var pattern = ctx.createPattern(c, 'repeat');
1589	return pattern;
1590	}
1591	}
1592	svg.Element.pattern.prototype = new svg.Element.ElementBase;
1593
1594	// marker element
1595	svg.Element.marker = function(node) {
1596	this.base = svg.Element.ElementBase;
1597	this.base(node);
1598
1599	this.baseRender = this.render;
1600	this.render = function(ctx, point, angle) {
1601	ctx.translate(point.x, point.y);
1602	if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(angle);
1603	if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
1604	ctx.save();
1605
1606	// render me using a temporary svg element
1607	var tempSvg = new svg.Element.svg();
1608	tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
1609	tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
1610	tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
1611	tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
1612	tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
1613	tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
1614	tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
1615	tempSvg.children = this.children;
1616	tempSvg.render(ctx);
1617
1618	ctx.restore();
1619	if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(1/ctx.lineWidth, 1/ctx.lineWidth);
1620	if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(-angle);
1621	ctx.translate(-point.x, -point.y);
1622	}
1623	}
1624	svg.Element.marker.prototype = new svg.Element.ElementBase;
1625
1626	// definitions element
1627	svg.Element.defs = function(node) {
1628	this.base = svg.Element.ElementBase;
1629	this.base(node);
1630
1631	this.render = function(ctx) {
1632	// NOOP
1633	}
1634	}
1635	svg.Element.defs.prototype = new svg.Element.ElementBase;
1636
1637	// base for gradients
1638	svg.Element.GradientBase = function(node) {
1639	this.base = svg.Element.ElementBase;
1640	this.base(node);
1641
1642	this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
1643
1644	this.stops = [];
1645	for (var i=0; i<this.children.length; i++) {
1646	var child = this.children[i];
1647	if (child.type == 'stop') this.stops.push(child);
1648	}
1649
1650	this.getGradient = function() {
1651	// OVERRIDE ME!
1652	}
1653
1654	this.createGradient = function(ctx, element, parentOpacityProp) {
1655	var stopsContainer = this;
1656	if (this.getHrefAttribute().hasValue()) {
1657	stopsContainer = this.getHrefAttribute().getDefinition();
1658	}
1659
1660	var addParentOpacity = function (color) {
1661	if (parentOpacityProp.hasValue()) {
1662	var p = new svg.Property('color', color);
1663	return p.addOpacity(parentOpacityProp).value;
1664	}
1665	return color;
1666	};
1667
1668	var g = this.getGradient(ctx, element);
1669	if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
1670	for (var i=0; i<stopsContainer.stops.length; i++) {
1671	g.addColorStop(stopsContainer.stops[i].offset, addParentOpacity(stopsContainer.stops[i].color));
1672	}
1673
1674	if (this.attribute('gradientTransform').hasValue()) {
1675	// render as transformed pattern on temporary canvas
1676	var rootView = svg.ViewPort.viewPorts[0];
1677
1678	var rect = new svg.Element.rect();
1679	rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS/3.0);
1680	rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS/3.0);
1681	rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
1682	rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
1683
1684	var group = new svg.Element.g();
1685	group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
1686	group.children = [ rect ];
1687
1688	var tempSvg = new svg.Element.svg();
1689	tempSvg.attributes['x'] = new svg.Property('x', 0);
1690	tempSvg.attributes['y'] = new svg.Property('y', 0);
1691	tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
1692	tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
1693	tempSvg.children = [ group ];
1694
1695	var c = document.createElement('canvas');
1696	c.width = rootView.width;
1697	c.height = rootView.height;
1698	var tempCtx = c.getContext('2d');
1699	tempCtx.fillStyle = g;
1700	tempSvg.render(tempCtx);
1701	return tempCtx.createPattern(c, 'no-repeat');
1702	}
1703
1704	return g;
1705	}
1706	}
1707	svg.Element.GradientBase.prototype = new svg.Element.ElementBase;
1708
1709	// linear gradient element
1710	svg.Element.linearGradient = function(node) {
1711	this.base = svg.Element.GradientBase;
1712	this.base(node);
1713
1714	this.getGradient = function(ctx, element) {
1715	var bb = this.gradientUnits == 'objectBoundingBox' ? element.getBoundingBox() : null;
1716
1717	if (!this.attribute('x1').hasValue()
1718	&& !this.attribute('y1').hasValue()
1719	&& !this.attribute('x2').hasValue()
1720	&& !this.attribute('y2').hasValue()) {
1721	this.attribute('x1', true).value = 0;
1722	this.attribute('y1', true).value = 0;
1723	this.attribute('x2', true).value = 1;
1724	this.attribute('y2', true).value = 0;
1725	}
1726
1727	var x1 = (this.gradientUnits == 'objectBoundingBox'
1728	? bb.x() + bb.width() * this.attribute('x1').numValue()
1729	: this.attribute('x1').toPixels('x'));
1730	var y1 = (this.gradientUnits == 'objectBoundingBox'
1731	? bb.y() + bb.height() * this.attribute('y1').numValue()
1732	: this.attribute('y1').toPixels('y'));
1733	var x2 = (this.gradientUnits == 'objectBoundingBox'
1734	? bb.x() + bb.width() * this.attribute('x2').numValue()
1735	: this.attribute('x2').toPixels('x'));
1736	var y2 = (this.gradientUnits == 'objectBoundingBox'
1737	? bb.y() + bb.height() * this.attribute('y2').numValue()
1738	: this.attribute('y2').toPixels('y'));
1739
1740	if (x1 == x2 && y1 == y2) return null;
1741	return ctx.createLinearGradient(x1, y1, x2, y2);
1742	}
1743	}
1744	svg.Element.linearGradient.prototype = new svg.Element.GradientBase;
1745
1746	// radial gradient element
1747	svg.Element.radialGradient = function(node) {
1748	this.base = svg.Element.GradientBase;
1749	this.base(node);
1750
1751	this.getGradient = function(ctx, element) {
1752	var bb = element.getBoundingBox();
1753
1754	if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
1755	if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
1756	if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';
1757
1758	var cx = (this.gradientUnits == 'objectBoundingBox'
1759	? bb.x() + bb.width() * this.attribute('cx').numValue()
1760	: this.attribute('cx').toPixels('x'));
1761	var cy = (this.gradientUnits == 'objectBoundingBox'
1762	? bb.y() + bb.height() * this.attribute('cy').numValue()
1763	: this.attribute('cy').toPixels('y'));
1764
1765	var fx = cx;
1766	var fy = cy;
1767	if (this.attribute('fx').hasValue()) {
1768	fx = (this.gradientUnits == 'objectBoundingBox'
1769	? bb.x() + bb.width() * this.attribute('fx').numValue()
1770	: this.attribute('fx').toPixels('x'));
1771	}
1772	if (this.attribute('fy').hasValue()) {
1773	fy = (this.gradientUnits == 'objectBoundingBox'
1774	? bb.y() + bb.height() * this.attribute('fy').numValue()
1775	: this.attribute('fy').toPixels('y'));
1776	}
1777
1778	var r = (this.gradientUnits == 'objectBoundingBox'
1779	? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
1780	: this.attribute('r').toPixels());
1781
1782	return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
1783	}
1784	}
1785	svg.Element.radialGradient.prototype = new svg.Element.GradientBase;
1786
1787	// gradient stop element
1788	svg.Element.stop = function(node) {
1789	this.base = svg.Element.ElementBase;
1790	this.base(node);
1791
1792	this.offset = this.attribute('offset').numValue();
1793	if (this.offset < 0) this.offset = 0;
1794	if (this.offset > 1) this.offset = 1;
1795
1796	var stopColor = this.style('stop-color');
1797	if (this.style('stop-opacity').hasValue()) stopColor = stopColor.addOpacity(this.style('stop-opacity'));
1798	this.color = stopColor.value;
1799	}
1800	svg.Element.stop.prototype = new svg.Element.ElementBase;
1801
1802	// animation base element
1803	svg.Element.AnimateBase = function(node) {
1804	this.base = svg.Element.ElementBase;
1805	this.base(node);
1806
1807	svg.Animations.push(this);
1808
1809	this.duration = 0.0;
1810	this.begin = this.attribute('begin').toMilliseconds();
1811	this.maxDuration = this.begin + this.attribute('dur').toMilliseconds();
1812
1813	this.getProperty = function() {
1814	var attributeType = this.attribute('attributeType').value;
1815	var attributeName = this.attribute('attributeName').value;
1816
1817	if (attributeType == 'CSS') {
1818	return this.parent.style(attributeName, true);
1819	}
1820	return this.parent.attribute(attributeName, true);
1821	};
1822
1823	this.initialValue = null;
1824	this.initialUnits = '';
1825	this.removed = false;
1826
1827	this.calcValue = function() {
1828	// OVERRIDE ME!
1829	return '';
1830	}
1831
1832	this.update = function(delta) {
1833	// set initial value
1834	if (this.initialValue == null) {
1835	this.initialValue = this.getProperty().value;
1836	this.initialUnits = this.getProperty().getUnits();
1837	}
1838
1839	// if we're past the end time
1840	if (this.duration > this.maxDuration) {
1841	// loop for indefinitely repeating animations
1842	if (this.attribute('repeatCount').value == 'indefinite'
1843	\|\| this.attribute('repeatDur').value == 'indefinite') {
1844	this.duration = 0.0
1845	}
1846	else if (this.attribute('fill').valueOrDefault('remove') == 'freeze' && !this.frozen) {
1847	this.frozen = true;
1848	this.parent.animationFrozen = true;
1849	this.parent.animationFrozenValue = this.getProperty().value;
1850	}
1851	else if (this.attribute('fill').valueOrDefault('remove') == 'remove' && !this.removed) {
1852	this.removed = true;
1853	this.getProperty().value = this.parent.animationFrozen ? this.parent.animationFrozenValue : this.initialValue;
1854	return true;
1855	}
1856	return false;
1857	}
1858	this.duration = this.duration + delta;
1859
1860	// if we're past the begin time
1861	var updated = false;
1862	if (this.begin < this.duration) {
1863	var newValue = this.calcValue(); // tween
1864
1865	if (this.attribute('type').hasValue()) {
1866	// for transform, etc.
1867	var type = this.attribute('type').value;
1868	newValue = type + '(' + newValue + ')';
1869	}
1870
1871	this.getProperty().value = newValue;
1872	updated = true;
1873	}
1874
1875	return updated;
1876	}
1877
1878	this.from = this.attribute('from');
1879	this.to = this.attribute('to');
1880	this.values = this.attribute('values');
1881	if (this.values.hasValue()) this.values.value = this.values.value.split(';');
1882
1883	// fraction of duration we've covered
1884	this.progress = function() {
1885	var ret = { progress: (this.duration - this.begin) / (this.maxDuration - this.begin) };
1886	if (this.values.hasValue()) {
1887	var p = ret.progress * (this.values.value.length - 1);
1888	var lb = Math.floor(p), ub = Math.ceil(p);
1889	ret.from = new svg.Property('from', parseFloat(this.values.value[lb]));
1890	ret.to = new svg.Property('to', parseFloat(this.values.value[ub]));
1891	ret.progress = (p - lb) / (ub - lb);
1892	}
1893	else {
1894	ret.from = this.from;
1895	ret.to = this.to;
1896	}
1897	return ret;
1898	}
1899	}
1900	svg.Element.AnimateBase.prototype = new svg.Element.ElementBase;
1901
1902	// animate element
1903	svg.Element.animate = function(node) {
1904	this.base = svg.Element.AnimateBase;
1905	this.base(node);
1906
1907	this.calcValue = function() {
1908	var p = this.progress();
1909
1910	// tween value linearly
1911	var newValue = p.from.numValue() + (p.to.numValue() - p.from.numValue()) * p.progress;
1912	return newValue + this.initialUnits;
1913	};
1914	}
1915	svg.Element.animate.prototype = new svg.Element.AnimateBase;
1916
1917	// animate color element
1918	svg.Element.animateColor = function(node) {
1919	this.base = svg.Element.AnimateBase;
1920	this.base(node);
1921
1922	this.calcValue = function() {
1923	var p = this.progress();
1924	var from = new RGBColor(p.from.value);
1925	var to = new RGBColor(p.to.value);
1926
1927	if (from.ok && to.ok) {
1928	// tween color linearly
1929	var r = from.r + (to.r - from.r) * p.progress;
1930	var g = from.g + (to.g - from.g) * p.progress;
1931	var b = from.b + (to.b - from.b) * p.progress;
1932	return 'rgb('+parseInt(r,10)+','+parseInt(g,10)+','+parseInt(b,10)+')';
1933	}
1934	return this.attribute('from').value;
1935	};
1936	}
1937	svg.Element.animateColor.prototype = new svg.Element.AnimateBase;
1938
1939	// animate transform element
1940	svg.Element.animateTransform = function(node) {
1941	this.base = svg.Element.AnimateBase;
1942	this.base(node);
1943
1944	this.calcValue = function() {
1945	var p = this.progress();
1946
1947	// tween value linearly
1948	var from = svg.ToNumberArray(p.from.value);
1949	var to = svg.ToNumberArray(p.to.value);
1950	var newValue = '';
1951	for (var i=0; i<from.length; i++) {
1952	newValue += from[i] + (to[i] - from[i]) * p.progress + ' ';
1953	}
1954	return newValue;
1955	};
1956	}
1957	svg.Element.animateTransform.prototype = new svg.Element.animate;
1958
1959	// font element
1960	svg.Element.font = function(node) {
1961	this.base = svg.Element.ElementBase;
1962	this.base(node);
1963
1964	this.horizAdvX = this.attribute('horiz-adv-x').numValue();
1965
1966	this.isRTL = false;
1967	this.isArabic = false;
1968	this.fontFace = null;
1969	this.missingGlyph = null;
1970	this.glyphs = [];
1971	for (var i=0; i<this.children.length; i++) {
1972	var child = this.children[i];
1973	if (child.type == 'font-face') {
1974	this.fontFace = child;
1975	if (child.style('font-family').hasValue()) {
1976	svg.Definitions[child.style('font-family').value] = this;
1977	}
1978	}
1979	else if (child.type == 'missing-glyph') this.missingGlyph = child;
1980	else if (child.type == 'glyph') {
1981	if (child.arabicForm != '') {
1982	this.isRTL = true;
1983	this.isArabic = true;
1984	if (typeof(this.glyphs[child.unicode]) == 'undefined') this.glyphs[child.unicode] = [];
1985	this.glyphs[child.unicode][child.arabicForm] = child;
1986	}
1987	else {
1988	this.glyphs[child.unicode] = child;
1989	}
1990	}
1991	}
1992	}
1993	svg.Element.font.prototype = new svg.Element.ElementBase;
1994
1995	// font-face element
1996	svg.Element.fontface = function(node) {
1997	this.base = svg.Element.ElementBase;
1998	this.base(node);
1999
2000	this.ascent = this.attribute('ascent').value;
2001	this.descent = this.attribute('descent').value;
2002	this.unitsPerEm = this.attribute('units-per-em').numValue();
2003	}
2004	svg.Element.fontface.prototype = new svg.Element.ElementBase;
2005
2006	// missing-glyph element
2007	svg.Element.missingglyph = function(node) {
2008	this.base = svg.Element.path;
2009	this.base(node);
2010
2011	this.horizAdvX = 0;
2012	}
2013	svg.Element.missingglyph.prototype = new svg.Element.path;
2014
2015	// glyph element
2016	svg.Element.glyph = function(node) {
2017	this.base = svg.Element.path;
2018	this.base(node);
2019
2020	this.horizAdvX = this.attribute('horiz-adv-x').numValue();
2021	this.unicode = this.attribute('unicode').value;
2022	this.arabicForm = this.attribute('arabic-form').value;
2023	}
2024	svg.Element.glyph.prototype = new svg.Element.path;
2025
2026	// text element
2027	svg.Element.text = function(node) {
2028	this.captureTextNodes = true;
2029	this.base = svg.Element.RenderedElementBase;
2030	this.base(node);
2031
2032	this.baseSetContext = this.setContext;
2033	this.setContext = function(ctx) {
2034	this.baseSetContext(ctx);
2035
2036	var textBaseline = this.style('dominant-baseline').toTextBaseline();
2037	if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
2038	if (textBaseline != null) ctx.textBaseline = textBaseline;
2039	}
2040
2041	this.getBoundingBox = function () {
2042	var x = this.attribute('x').toPixels('x');
2043	var y = this.attribute('y').toPixels('y');
2044	var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
2045	return new svg.BoundingBox(x, y - fontSize, x + Math.floor(fontSize * 2.0 / 3.0) * this.children[0].getText().length, y);
2046	}
2047
2048	this.renderChildren = function(ctx) {
2049	this.x = this.attribute('x').toPixels('x');
2050	this.y = this.attribute('y').toPixels('y');
2051	this.x += this.getAnchorDelta(ctx, this, 0);
2052	for (var i=0; i<this.children.length; i++) {
2053	this.renderChild(ctx, this, i);
2054	}
2055	}
2056
2057	this.getAnchorDelta = function (ctx, parent, startI) {
2058	var textAnchor = this.style('text-anchor').valueOrDefault('start');
2059	if (textAnchor != 'start') {
2060	var width = 0;
2061	for (var i=startI; i<parent.children.length; i++) {
2062	var child = parent.children[i];
2063	if (i > startI && child.attribute('x').hasValue()) break; // new group
2064	width += child.measureTextRecursive(ctx);
2065	}
2066	return -1 * (textAnchor == 'end' ? width : width / 2.0);
2067	}
2068	return 0;
2069	}
2070
2071	this.renderChild = function(ctx, parent, i) {
2072	var child = parent.children[i];
2073	if (child.attribute('x').hasValue()) {
2074	child.x = child.attribute('x').toPixels('x') + this.getAnchorDelta(ctx, parent, i);
2075	if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
2076	}
2077	else {
2078	if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
2079	if (child.attribute('dx').hasValue()) this.x += child.attribute('dx').toPixels('x');
2080	child.x = this.x;
2081	}
2082	this.x = child.x + child.measureText(ctx);
2083
2084	if (child.attribute('y').hasValue()) {
2085	child.y = child.attribute('y').toPixels('y');
2086	if (child.attribute('dy').hasValue()) child.y += child.attribute('dy').toPixels('y');
2087	}
2088	else {
2089	if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
2090	if (child.attribute('dy').hasValue()) this.y += child.attribute('dy').toPixels('y');
2091	child.y = this.y;
2092	}
2093	this.y = child.y;
2094
2095	child.render(ctx);
2096
2097	for (var i=0; i<child.children.length; i++) {
2098	this.renderChild(ctx, child, i);
2099	}
2100	}
2101	}
2102	svg.Element.text.prototype = new svg.Element.RenderedElementBase;
2103
2104	// text base
2105	svg.Element.TextElementBase = function(node) {
2106	this.base = svg.Element.RenderedElementBase;
2107	this.base(node);
2108
2109	this.getGlyph = function(font, text, i) {
2110	var c = text[i];
2111	var glyph = null;
2112	if (font.isArabic) {
2113	var arabicForm = 'isolated';
2114	if ((i==0 \|\| text[i-1]==' ') && i<text.length-2 && text[i+1]!=' ') arabicForm = 'terminal';
2115	if (i>0 && text[i-1]!=' ' && i<text.length-2 && text[i+1]!=' ') arabicForm = 'medial';
2116	if (i>0 && text[i-1]!=' ' && (i == text.length-1 \|\| text[i+1]==' ')) arabicForm = 'initial';
2117	if (typeof(font.glyphs[c]) != 'undefined') {
2118	glyph = font.glyphs[c][arabicForm];
2119	if (glyph == null && font.glyphs[c].type == 'glyph') glyph = font.glyphs[c];
2120	}
2121	}
2122	else {
2123	glyph = font.glyphs[c];
2124	}
2125	if (glyph == null) glyph = font.missingGlyph;
2126	return glyph;
2127	}
2128
2129	this.renderChildren = function(ctx) {
2130	var customFont = this.parent.style('font-family').getDefinition();
2131	if (customFont != null) {
2132	var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
2133	var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
2134	var text = this.getText();
2135	if (customFont.isRTL) text = text.split("").reverse().join("");
2136
2137	var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
2138	for (var i=0; i<text.length; i++) {
2139	var glyph = this.getGlyph(customFont, text, i);
2140	var scale = fontSize / customFont.fontFace.unitsPerEm;
2141	ctx.translate(this.x, this.y);
2142	ctx.scale(scale, -scale);
2143	var lw = ctx.lineWidth;
2144	ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
2145	if (fontStyle == 'italic') ctx.transform(1, 0, .4, 1, 0, 0);
2146	glyph.render(ctx);
2147	if (fontStyle == 'italic') ctx.transform(1, 0, -.4, 1, 0, 0);
2148	ctx.lineWidth = lw;
2149	ctx.scale(1/scale, -1/scale);
2150	ctx.translate(-this.x, -this.y);
2151
2152	this.x += fontSize * (glyph.horizAdvX \|\| customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
2153	if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
2154	this.x += dx[i];
2155	}
2156	}
2157	return;
2158	}
2159
2160	if (ctx.fillStyle != '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
2161	if (ctx.strokeStyle != '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
2162	}
2163
2164	this.getText = function() {
2165	// OVERRIDE ME
2166	}
2167
2168	this.measureTextRecursive = function(ctx) {
2169	var width = this.measureText(ctx);
2170	for (var i=0; i<this.children.length; i++) {
2171	width += this.children[i].measureTextRecursive(ctx);
2172	}
2173	return width;
2174	}
2175
2176	this.measureText = function(ctx) {
2177	var customFont = this.parent.style('font-family').getDefinition();
2178	if (customFont != null) {
2179	var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
2180	var measure = 0;
2181	var text = this.getText();
2182	if (customFont.isRTL) text = text.split("").reverse().join("");
2183	var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
2184	for (var i=0; i<text.length; i++) {
2185	var glyph = this.getGlyph(customFont, text, i);
2186	measure += (glyph.horizAdvX \|\| customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
2187	if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
2188	measure += dx[i];
2189	}
2190	}
2191	return measure;
2192	}
2193
2194	var textToMeasure = svg.compressSpaces(this.getText());
2195	if (!ctx.measureText) return textToMeasure.length * 10;
2196
2197	ctx.save();
2198	this.setContext(ctx);
2199	var width = ctx.measureText(textToMeasure).width;
2200	ctx.restore();
2201	return width;
2202	}
2203	}
2204	svg.Element.TextElementBase.prototype = new svg.Element.RenderedElementBase;
2205
2206	// tspan
2207	svg.Element.tspan = function(node) {
2208	this.captureTextNodes = true;
2209	this.base = svg.Element.TextElementBase;
2210	this.base(node);
2211
2212	this.text = node.nodeValue \|\| node.text \|\| '';
2213	this.getText = function() {
2214	return this.text;
2215	}
2216	}
2217	svg.Element.tspan.prototype = new svg.Element.TextElementBase;
2218
2219	// tref
2220	svg.Element.tref = function(node) {
2221	this.base = svg.Element.TextElementBase;
2222	this.base(node);
2223
2224	this.getText = function() {
2225	var element = this.getHrefAttribute().getDefinition();
2226	if (element != null) return element.children[0].getText();
2227	}
2228	}
2229	svg.Element.tref.prototype = new svg.Element.TextElementBase;
2230
2231	// a element
2232	svg.Element.a = function(node) {
2233	this.base = svg.Element.TextElementBase;
2234	this.base(node);
2235
2236	this.hasText = node.childNodes.length > 0;
2237	for (var i=0; i<node.childNodes.length; i++) {
2238	if (node.childNodes[i].nodeType != 3) this.hasText = false;
2239	}
2240
2241	// this might contain text
2242	this.text = this.hasText ? node.childNodes[0].nodeValue : '';
2243	this.getText = function() {
2244	return this.text;
2245	}
2246
2247	this.baseRenderChildren = this.renderChildren;
2248	this.renderChildren = function(ctx) {
2249	if (this.hasText) {
2250	// render as text element
2251	this.baseRenderChildren(ctx);
2252	var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
2253	svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
2254	}
2255	else if (this.children.length > 0) {
2256	// render as temporary group
2257	var g = new svg.Element.g();
2258	g.children = this.children;
2259	g.parent = this;
2260	g.render(ctx);
2261	}
2262	}
2263
2264	this.onclick = function() {
2265	window.open(this.getHrefAttribute().value);
2266	}
2267
2268	this.onmousemove = function() {
2269	svg.ctx.canvas.style.cursor = 'pointer';
2270	}
2271	}
2272	svg.Element.a.prototype = new svg.Element.TextElementBase;
2273
2274	// image element
2275	svg.Element.image = function(node) {
2276	this.base = svg.Element.RenderedElementBase;
2277	this.base(node);
2278
2279	var href = this.getHrefAttribute().value;
2280	if (href == '') { return; }
2281	var isSvg = href.match(/\.svg$/)
2282
2283	svg.Images.push(this);
2284	this.loaded = false;
2285	if (!isSvg) {
2286	this.img = document.createElement('img');
2287	if (svg.opts['useCORS'] == true) { this.img.crossOrigin = 'Anonymous'; }
2288	var self = this;
2289	this.img.onload = function() { self.loaded = true; }
2290	this.img.onerror = function() { svg.log('ERROR: image "' + href + '" not found'); self.loaded = true; }
2291	this.img.src = href;
2292	}
2293	else {
2294	this.img = svg.ajax(href);
2295	this.loaded = true;
2296	}
2297
2298	this.renderChildren = function(ctx) {
2299	var x = this.attribute('x').toPixels('x');
2300	var y = this.attribute('y').toPixels('y');
2301
2302	var width = this.attribute('width').toPixels('x');
2303	var height = this.attribute('height').toPixels('y');
2304	if (width == 0 \|\| height == 0) return;
2305
2306	ctx.save();
2307	if (isSvg) {
2308	ctx.drawSvg(this.img, x, y, width, height);
2309	}
2310	else {
2311	ctx.translate(x, y);
2312	svg.AspectRatio(ctx,
2313	this.attribute('preserveAspectRatio').value,
2314	width,
2315	this.img.width,
2316	height,
2317	this.img.height,
2318	0,
2319	0);
2320	ctx.drawImage(this.img, 0, 0);
2321	}
2322	ctx.restore();
2323	}
2324
2325	this.getBoundingBox = function() {
2326	var x = this.attribute('x').toPixels('x');
2327	var y = this.attribute('y').toPixels('y');
2328	var width = this.attribute('width').toPixels('x');
2329	var height = this.attribute('height').toPixels('y');
2330	return new svg.BoundingBox(x, y, x + width, y + height);
2331	}
2332	}
2333	svg.Element.image.prototype = new svg.Element.RenderedElementBase;
2334
2335	// group element
2336	svg.Element.g = function(node) {
2337	this.base = svg.Element.RenderedElementBase;
2338	this.base(node);
2339
2340	this.getBoundingBox = function() {
2341	var bb = new svg.BoundingBox();
2342	for (var i=0; i<this.children.length; i++) {
2343	bb.addBoundingBox(this.children[i].getBoundingBox());
2344	}
2345	return bb;
2346	};
2347	}
2348	svg.Element.g.prototype = new svg.Element.RenderedElementBase;
2349
2350	// symbol element
2351	svg.Element.symbol = function(node) {
2352	this.base = svg.Element.RenderedElementBase;
2353	this.base(node);
2354
2355	this.render = function(ctx) {
2356	// NO RENDER
2357	};
2358	}
2359	svg.Element.symbol.prototype = new svg.Element.RenderedElementBase;
2360
2361	// style element
2362	svg.Element.style = function(node) {
2363	this.base = svg.Element.ElementBase;
2364	this.base(node);
2365
2366	// text, or spaces then CDATA
2367	var css = ''
2368	for (var i=0; i<node.childNodes.length; i++) {
2369	css += node.childNodes[i].nodeValue;
2370	}
2371	css = css.replace(/(\/\([^]\|[\r\n]\|(\+([^\/]\|[\r\n])))\+\/)\|(^[\s]\/\/.)/gm, ''); // remove comments
2372	css = svg.compressSpaces(css); // replace whitespace
2373	var cssDefs = css.split('}');
2374	for (var i=0; i<cssDefs.length; i++) {
2375	if (svg.trim(cssDefs[i]) != '') {
2376	var cssDef = cssDefs[i].split('{');
2377	var cssClasses = cssDef[0].split(',');
2378	var cssProps = cssDef[1].split(';');
2379	for (var j=0; j<cssClasses.length; j++) {
2380	var cssClass = svg.trim(cssClasses[j]);
2381	if (cssClass != '') {
2382	var props = {};
2383	for (var k=0; k<cssProps.length; k++) {
2384	var prop = cssProps[k].indexOf(':');
2385	var name = cssProps[k].substr(0, prop);
2386	var value = cssProps[k].substr(prop + 1, cssProps[k].length - prop);
2387	if (name != null && value != null) {
2388	props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
2389	}
2390	}
2391	svg.Styles[cssClass] = props;
2392	if (cssClass == '@font-face') {
2393	var fontFamily = props['font-family'].value.replace(/"/g,'');
2394	var srcs = props['src'].value.split(',');
2395	for (var s=0; s<srcs.length; s++) {
2396	if (srcs[s].indexOf('format("svg")') > 0) {
2397	var urlStart = srcs[s].indexOf('url');
2398	var urlEnd = srcs[s].indexOf(')', urlStart);
2399	var url = srcs[s].substr(urlStart + 5, urlEnd - urlStart - 6);
2400	var doc = svg.parseXml(svg.ajax(url));
2401	var fonts = doc.getElementsByTagName('font');
2402	for (var f=0; f<fonts.length; f++) {
2403	var font = svg.CreateElement(fonts[f]);
2404	svg.Definitions[fontFamily] = font;
2405	}
2406	}
2407	}
2408	}
2409	}
2410	}
2411	}
2412	}
2413	}
2414	svg.Element.style.prototype = new svg.Element.ElementBase;
2415
2416	// use element
2417	svg.Element.use = function(node) {
2418	this.base = svg.Element.RenderedElementBase;
2419	this.base(node);
2420
2421	this.baseSetContext = this.setContext;
2422	this.setContext = function(ctx) {
2423	this.baseSetContext(ctx);
2424	if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
2425	if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
2426	}
2427
2428	var element = this.getHrefAttribute().getDefinition();
2429
2430	this.path = function(ctx) {
2431	if (element != null) element.path(ctx);
2432	}
2433
2434	this.getBoundingBox = function() {
2435	if (element != null) return element.getBoundingBox();
2436	}
2437
2438	this.renderChildren = function(ctx) {
2439	if (element != null) {
2440	var tempSvg = element;
2441	if (element.type == 'symbol') {
2442	// render me using a temporary svg element in symbol cases (http://www.w3.org/TR/SVG/struct.html#UseElement)
2443	tempSvg = new svg.Element.svg();
2444	tempSvg.type = 'svg';
2445	tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
2446	tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
2447	tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
2448	tempSvg.children = element.children;
2449	}
2450	if (tempSvg.type == 'svg') {
2451	// if symbol or svg, inherit width/height from me
2452	if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
2453	if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
2454	}
2455	var oldParent = tempSvg.parent;
2456	tempSvg.parent = null;
2457	tempSvg.render(ctx);
2458	tempSvg.parent = oldParent;
2459	}
2460	}
2461	}
2462	svg.Element.use.prototype = new svg.Element.RenderedElementBase;
2463
2464	// mask element
2465	svg.Element.mask = function(node) {
2466	this.base = svg.Element.ElementBase;
2467	this.base(node);
2468
2469	this.apply = function(ctx, element) {
2470	// render as temp svg
2471	var x = this.attribute('x').toPixels('x');
2472	var y = this.attribute('y').toPixels('y');
2473	var width = this.attribute('width').toPixels('x');
2474	var height = this.attribute('height').toPixels('y');
2475
2476	if (width == 0 && height == 0) {
2477	var bb = new svg.BoundingBox();
2478	for (var i=0; i<this.children.length; i++) {
2479	bb.addBoundingBox(this.children[i].getBoundingBox());
2480	}
2481	var x = Math.floor(bb.x1);
2482	var y = Math.floor(bb.y1);
2483	var width = Math.floor(bb.width());
2484	var height = Math.floor(bb.height());
2485	}
2486
2487	// temporarily remove mask to avoid recursion
2488	var mask = element.attribute('mask').value;
2489	element.attribute('mask').value = '';
2490
2491	var cMask = document.createElement('canvas');
2492	cMask.width = x + width;
2493	cMask.height = y + height;
2494	var maskCtx = cMask.getContext('2d');
2495	this.renderChildren(maskCtx);
2496
2497	var c = document.createElement('canvas');
2498	c.width = x + width;
2499	c.height = y + height;
2500	var tempCtx = c.getContext('2d');
2501	element.render(tempCtx);
2502	tempCtx.globalCompositeOperation = 'destination-in';
2503	tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
2504	tempCtx.fillRect(0, 0, x + width, y + height);
2505
2506	ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
2507	ctx.fillRect(0, 0, x + width, y + height);
2508
2509	// reassign mask
2510	element.attribute('mask').value = mask;
2511	}
2512
2513	this.render = function(ctx) {
2514	// NO RENDER
2515	}
2516	}
2517	svg.Element.mask.prototype = new svg.Element.ElementBase;
2518
2519	// clip element
2520	svg.Element.clipPath = function(node) {
2521	this.base = svg.Element.ElementBase;
2522	this.base(node);
2523
2524	this.apply = function(ctx) {
2525	var oldBeginPath = CanvasRenderingContext2D.prototype.beginPath;
2526	CanvasRenderingContext2D.prototype.beginPath = function () { };
2527
2528	var oldClosePath = CanvasRenderingContext2D.prototype.closePath;
2529	CanvasRenderingContext2D.prototype.closePath = function () { };
2530
2531	oldBeginPath.call(ctx);
2532	for (var i=0; i<this.children.length; i++) {
2533	var child = this.children[i];
2534	if (typeof(child.path) != 'undefined') {
2535	var transform = null;
2536	if (child.attribute('transform').hasValue()) {
2537	transform = new svg.Transform(child.attribute('transform').value);
2538	transform.apply(ctx);
2539	}
2540	child.path(ctx);
2541	CanvasRenderingContext2D.prototype.closePath = oldClosePath;
2542	if (transform) { transform.unapply(ctx); }
2543	}
2544	}
2545	oldClosePath.call(ctx);
2546	ctx.clip();
2547
2548	CanvasRenderingContext2D.prototype.beginPath = oldBeginPath;
2549	CanvasRenderingContext2D.prototype.closePath = oldClosePath;
2550	}
2551
2552	this.render = function(ctx) {
2553	// NO RENDER
2554	}
2555	}
2556	svg.Element.clipPath.prototype = new svg.Element.ElementBase;
2557
2558	// filters
2559	svg.Element.filter = function(node) {
2560	this.base = svg.Element.ElementBase;
2561	this.base(node);
2562
2563	this.apply = function(ctx, element) {
2564	// render as temp svg
2565	var bb = element.getBoundingBox();
2566	var x = Math.floor(bb.x1);
2567	var y = Math.floor(bb.y1);
2568	var width = Math.floor(bb.width());
2569	var height = Math.floor(bb.height());
2570
2571	// temporarily remove filter to avoid recursion
2572	var filter = element.style('filter').value;
2573	element.style('filter').value = '';
2574
2575	var px = 0, py = 0;
2576	for (var i=0; i<this.children.length; i++) {
2577	var efd = this.children[i].extraFilterDistance \|\| 0;
2578	px = Math.max(px, efd);
2579	py = Math.max(py, efd);
2580	}
2581
2582	var c = document.createElement('canvas');
2583	c.width = width + 2*px;
2584	c.height = height + 2*py;
2585	var tempCtx = c.getContext('2d');
2586	tempCtx.translate(-x + px, -y + py);
2587	element.render(tempCtx);
2588
2589	// apply filters
2590	for (var i=0; i<this.children.length; i++) {
2591	this.children[i].apply(tempCtx, 0, 0, width + 2px, height + 2py);
2592	}
2593
2594	// render on me
2595	ctx.drawImage(c, 0, 0, width + 2px, height + 2py, x - px, y - py, width + 2px, height + 2py);
2596
2597	// reassign filter
2598	element.style('filter', true).value = filter;
2599	}
2600
2601	this.render = function(ctx) {
2602	// NO RENDER
2603	}
2604	}
2605	svg.Element.filter.prototype = new svg.Element.ElementBase;
2606
2607	svg.Element.feMorphology = function(node) {
2608	this.base = svg.Element.ElementBase;
2609	this.base(node);
2610
2611	this.apply = function(ctx, x, y, width, height) {
2612	// TODO: implement
2613	}
2614	}
2615	svg.Element.feMorphology.prototype = new svg.Element.ElementBase;
2616
2617	svg.Element.feComposite = function(node) {
2618	this.base = svg.Element.ElementBase;
2619	this.base(node);
2620
2621	this.apply = function(ctx, x, y, width, height) {
2622	// TODO: implement
2623	}
2624	}
2625	svg.Element.feComposite.prototype = new svg.Element.ElementBase;
2626
2627	svg.Element.feColorMatrix = function(node) {
2628	this.base = svg.Element.ElementBase;
2629	this.base(node);
2630
2631	var matrix = svg.ToNumberArray(this.attribute('values').value);
2632	switch (this.attribute('type').valueOrDefault('matrix')) { // http://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
2633	case 'saturate':
2634	var s = matrix[0];
2635	matrix = [0.213+0.787s,0.715-0.715s,0.072-0.072*s,0,0,
2636	0.213-0.213s,0.715+0.285s,0.072-0.072*s,0,0,
2637	0.213-0.213s,0.715-0.715s,0.072+0.928*s,0,0,
2638	0,0,0,1,0,
2639	0,0,0,0,1];
2640	break;
2641	case 'hueRotate':
2642	var a = matrix[0] * Math.PI / 180.0;
2643	var c = function (m1,m2,m3) { return m1 + Math.cos(a)m2 + Math.sin(a)m3; };
2644	matrix = [c(0.213,0.787,-0.213),c(0.715,-0.715,-0.715),c(0.072,-0.072,0.928),0,0,
2645	c(0.213,-0.213,0.143),c(0.715,0.285,0.140),c(0.072,-0.072,-0.283),0,0,
2646	c(0.213,-0.213,-0.787),c(0.715,-0.715,0.715),c(0.072,0.928,0.072),0,0,
2647	0,0,0,1,0,
2648	0,0,0,0,1];
2649	break;
2650	case 'luminanceToAlpha':
2651	matrix = [0,0,0,0,0,
2652	0,0,0,0,0,
2653	0,0,0,0,0,
2654	0.2125,0.7154,0.0721,0,0,
2655	0,0,0,0,1];
2656	break;
2657	}
2658
2659	function imGet(img, x, y, width, height, rgba) {
2660	return img[ywidth4 + x*4 + rgba];
2661	}
2662
2663	function imSet(img, x, y, width, height, rgba, val) {
2664	img[ywidth4 + x*4 + rgba] = val;
2665	}
2666
2667	function m(i, v) {
2668	var mi = matrix[i];
2669	return mi * (mi < 0 ? v - 255 : v);
2670	}
2671
2672	this.apply = function(ctx, x, y, width, height) {
2673	// assuming x==0 && y==0 for now
2674	var srcData = ctx.getImageData(0, 0, width, height);
2675	for (var y = 0; y < height; y++) {
2676	for (var x = 0; x < width; x++) {
2677	var r = imGet(srcData.data, x, y, width, height, 0);
2678	var g = imGet(srcData.data, x, y, width, height, 1);
2679	var b = imGet(srcData.data, x, y, width, height, 2);
2680	var a = imGet(srcData.data, x, y, width, height, 3);
2681	imSet(srcData.data, x, y, width, height, 0, m(0,r)+m(1,g)+m(2,b)+m(3,a)+m(4,1));
2682	imSet(srcData.data, x, y, width, height, 1, m(5,r)+m(6,g)+m(7,b)+m(8,a)+m(9,1));
2683	imSet(srcData.data, x, y, width, height, 2, m(10,r)+m(11,g)+m(12,b)+m(13,a)+m(14,1));
2684	imSet(srcData.data, x, y, width, height, 3, m(15,r)+m(16,g)+m(17,b)+m(18,a)+m(19,1));
2685	}
2686	}
2687	ctx.clearRect(0, 0, width, height);
2688	ctx.putImageData(srcData, 0, 0);
2689	}
2690	}
2691	svg.Element.feColorMatrix.prototype = new svg.Element.ElementBase;
2692
2693	svg.Element.feGaussianBlur = function(node) {
2694	this.base = svg.Element.ElementBase;
2695	this.base(node);
2696
2697	this.blurRadius = Math.floor(this.attribute('stdDeviation').numValue());
2698	this.extraFilterDistance = this.blurRadius;
2699
2700	this.apply = function(ctx, x, y, width, height) {
2701	if (typeof(stackBlurCanvasRGBA) == 'undefined') {
2702	svg.log('ERROR: StackBlur.js must be included for blur to work');
2703	return;
2704	}
2705
2706	// StackBlur requires canvas be on document
2707	ctx.canvas.id = svg.UniqueId();
2708	ctx.canvas.style.display = 'none';
2709	document.body.appendChild(ctx.canvas);
2710	stackBlurCanvasRGBA(ctx.canvas.id, x, y, width, height, this.blurRadius);
2711	document.body.removeChild(ctx.canvas);
2712	}
2713	}
2714	svg.Element.feGaussianBlur.prototype = new svg.Element.ElementBase;
2715
2716	// title element, do nothing
2717	svg.Element.title = function(node) {
2718	}
2719	svg.Element.title.prototype = new svg.Element.ElementBase;
2720
2721	// desc element, do nothing
2722	svg.Element.desc = function(node) {
2723	}
2724	svg.Element.desc.prototype = new svg.Element.ElementBase;
2725
2726	svg.Element.MISSING = function(node) {
2727	svg.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
2728	}
2729	svg.Element.MISSING.prototype = new svg.Element.ElementBase;
2730
2731	// element factory
2732	svg.CreateElement = function(node) {
2733	var className = node.nodeName.replace(/^[^:]+:/,''); // remove namespace
2734	className = className.replace(/\-/g,''); // remove dashes
2735	var e = null;
2736	if (typeof(svg.Element[className]) != 'undefined') {
2737	e = new svg.Element[className](node);
2738	}
2739	else {
2740	e = new svg.Element.MISSING(node);
2741	}
2742
2743	e.type = node.nodeName;
2744	return e;
2745	}
2746
2747	// load from url
2748	svg.load = function(ctx, url) {
2749	svg.loadXml(ctx, svg.ajax(url));
2750	}
2751
2752	// load from xml
2753	svg.loadXml = function(ctx, xml) {
2754	svg.loadXmlDoc(ctx, svg.parseXml(xml));
2755	}
2756
2757	svg.loadXmlDoc = function(ctx, dom) {
2758	svg.init(ctx);
2759
2760	var mapXY = function(p) {
2761	var e = ctx.canvas;
2762	while (e) {
2763	p.x -= e.offsetLeft;
2764	p.y -= e.offsetTop;
2765	e = e.offsetParent;
2766	}
2767	if (window.scrollX) p.x += window.scrollX;
2768	if (window.scrollY) p.y += window.scrollY;
2769	return p;
2770	}
2771
2772	// bind mouse
2773	if (svg.opts['ignoreMouse'] != true) {
2774	ctx.canvas.onclick = function(e) {
2775	var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
2776	svg.Mouse.onclick(p.x, p.y);
2777	};
2778	ctx.canvas.onmousemove = function(e) {
2779	var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
2780	svg.Mouse.onmousemove(p.x, p.y);
2781	};
2782	}
2783
2784	var e = svg.CreateElement(dom.documentElement);
2785	e.root = true;
2786
2787	// render loop
2788	var isFirstRender = true;
2789	var draw = function() {
2790	svg.ViewPort.Clear();
2791	if (ctx.canvas.parentNode) svg.ViewPort.SetCurrent(ctx.canvas.parentNode.clientWidth, ctx.canvas.parentNode.clientHeight);
2792
2793	if (svg.opts['ignoreDimensions'] != true) {
2794	// set canvas size
2795	if (e.style('width').hasValue()) {
2796	ctx.canvas.width = e.style('width').toPixels('x');
2797	ctx.canvas.style.width = ctx.canvas.width + 'px';
2798	}
2799	if (e.style('height').hasValue()) {
2800	ctx.canvas.height = e.style('height').toPixels('y');
2801	ctx.canvas.style.height = ctx.canvas.height + 'px';
2802	}
2803	}
2804	var cWidth = ctx.canvas.clientWidth \|\| ctx.canvas.width;
2805	var cHeight = ctx.canvas.clientHeight \|\| ctx.canvas.height;
2806	if (svg.opts['ignoreDimensions'] == true && e.style('width').hasValue() && e.style('height').hasValue()) {
2807	cWidth = e.style('width').toPixels('x');
2808	cHeight = e.style('height').toPixels('y');
2809	}
2810	svg.ViewPort.SetCurrent(cWidth, cHeight);
2811
2812	if (svg.opts['offsetX'] != null) e.attribute('x', true).value = svg.opts['offsetX'];
2813	if (svg.opts['offsetY'] != null) e.attribute('y', true).value = svg.opts['offsetY'];
2814	if (svg.opts['scaleWidth'] != null \|\| svg.opts['scaleHeight'] != null) {
2815	var xRatio = null, yRatio = null, viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
2816
2817	if (svg.opts['scaleWidth'] != null) {
2818	if (e.attribute('width').hasValue()) xRatio = e.attribute('width').toPixels('x') / svg.opts['scaleWidth'];
2819	else if (!isNaN(viewBox[2])) xRatio = viewBox[2] / svg.opts['scaleWidth'];
2820	}
2821
2822	if (svg.opts['scaleHeight'] != null) {
2823	if (e.attribute('height').hasValue()) yRatio = e.attribute('height').toPixels('y') / svg.opts['scaleHeight'];
2824	else if (!isNaN(viewBox[3])) yRatio = viewBox[3] / svg.opts['scaleHeight'];
2825	}
2826
2827	if (xRatio == null) { xRatio = yRatio; }
2828	if (yRatio == null) { yRatio = xRatio; }
2829
2830	e.attribute('width', true).value = svg.opts['scaleWidth'];
2831	e.attribute('height', true).value = svg.opts['scaleHeight'];
2832	e.attribute('transform', true).value += ' scale('+(1.0/xRatio)+','+(1.0/yRatio)+')';
2833	}
2834
2835	// clear and render
2836	if (svg.opts['ignoreClear'] != true) {
2837	ctx.clearRect(0, 0, cWidth, cHeight);
2838	}
2839	e.render(ctx);
2840	if (isFirstRender) {
2841	isFirstRender = false;
2842	if (typeof(svg.opts['renderCallback']) == 'function') svg.opts['renderCallback'](dom);
2843	}
2844	}
2845
2846	var waitingForImages = true;
2847	if (svg.ImagesLoaded()) {
2848	waitingForImages = false;
2849	draw();
2850	}
2851	svg.intervalID = setInterval(function() {
2852	var needUpdate = false;
2853
2854	if (waitingForImages && svg.ImagesLoaded()) {
2855	waitingForImages = false;
2856	needUpdate = true;
2857	}
2858
2859	// need update from mouse events?
2860	if (svg.opts['ignoreMouse'] != true) {
2861	needUpdate = needUpdate \| svg.Mouse.hasEvents();
2862	}
2863
2864	// need update from animations?
2865	if (svg.opts['ignoreAnimation'] != true) {
2866	for (var i=0; i<svg.Animations.length; i++) {
2867	needUpdate = needUpdate \| svg.Animations[i].update(1000 / svg.FRAMERATE);
2868	}
2869	}
2870
2871	// need update from redraw?
2872	if (typeof(svg.opts['forceRedraw']) == 'function') {
2873	if (svg.opts['forceRedraw']() == true) needUpdate = true;
2874	}
2875
2876	// render if needed
2877	if (needUpdate) {
2878	draw();
2879	svg.Mouse.runEvents(); // run and clear our events
2880	}
2881	}, 1000 / svg.FRAMERATE);
2882	}
2883
2884	svg.stop = function() {
2885	if (svg.intervalID) {
2886	clearInterval(svg.intervalID);
2887	}
2888	}
2889
2890	svg.Mouse = new (function() {
2891	this.events = [];
2892	this.hasEvents = function() { return this.events.length != 0; }
2893
2894	this.onclick = function(x, y) {
2895	this.events.push({ type: 'onclick', x: x, y: y,
2896	run: function(e) { if (e.onclick) e.onclick(); }
2897	});
2898	}
2899
2900	this.onmousemove = function(x, y) {
2901	this.events.push({ type: 'onmousemove', x: x, y: y,
2902	run: function(e) { if (e.onmousemove) e.onmousemove(); }
2903	});
2904	}
2905
2906	this.eventElements = [];
2907
2908	this.checkPath = function(element, ctx) {
2909	for (var i=0; i<this.events.length; i++) {
2910	var e = this.events[i];
2911	if (ctx.isPointInPath && ctx.isPointInPath(e.x, e.y)) this.eventElements[i] = element;
2912	}
2913	}
2914
2915	this.checkBoundingBox = function(element, bb) {
2916	for (var i=0; i<this.events.length; i++) {
2917	var e = this.events[i];
2918	if (bb.isPointInBox(e.x, e.y)) this.eventElements[i] = element;
2919	}
2920	}
2921
2922	this.runEvents = function() {
2923	svg.ctx.canvas.style.cursor = '';
2924
2925	for (var i=0; i<this.events.length; i++) {
2926	var e = this.events[i];
2927	var element = this.eventElements[i];
2928	while (element) {
2929	e.run(element);
2930	element = element.parent;
2931	}
2932	}
2933
2934	// done running, clear
2935	this.events = [];
2936	this.eventElements = [];
2937	}
2938	});
2939
2940	return svg;
2941	}
2942	})();
2943
2944	if (typeof(CanvasRenderingContext2D) != 'undefined') {
2945	CanvasRenderingContext2D.prototype.drawSvg = function(s, dx, dy, dw, dh) {
2946	canvg(this.canvas, s, {
2947	ignoreMouse: true,
2948	ignoreAnimation: true,
2949	ignoreDimensions: true,
2950	ignoreClear: true,
2951	offsetX: dx,
2952	offsetY: dy,
2953	scaleWidth: dw,
2954	scaleHeight: dh
2955	});
2956	}
2957	}

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