svgedit/editor/canvg/canvg.js

/* eslint-disable no-var, no-redeclare, new-cap */
/* globals RGBColor, stackBlurCanvasRGBA, ActiveXObject */
/*
 * canvg.js - Javascript SVG parser and renderer on Canvas
 * MIT Licensed
 * Gabe Lerner (gabelerner@gmail.com)
 * http://code.google.com/p/canvg/
 *
 * Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
 */
var canvg;
(function () {
// canvg(target, s)
// empty parameters: replace all 'svg' elements on page with 'canvas' elements
// target: canvas element or the id of a canvas element
// s: svg string, url to svg file, or xml document
// opts: optional hash of options
//		 ignoreMouse: true => ignore mouse events
//		 ignoreAnimation: true => ignore animations
//		 ignoreDimensions: true => does not try to resize canvas
//		 ignoreClear: true => does not clear canvas
//		 offsetX: int => draws at a x offset
//		 offsetY: int => draws at a y offset
//		 scaleWidth: int => scales horizontally to width
//		 scaleHeight: int => scales vertically to height
//		 renderCallback: function => will call the function after the first render is completed
//		 forceRedraw: function => will call the function on every frame, if it returns true, will redraw
canvg = function (target, s, opts) {
	// no parameters
	if (target == null && s == null && opts == null) {
		var svgTags = document.querySelectorAll('svg');
		for (var i = 0; i < svgTags.length; i++) {
			var svgTag = svgTags[i];
			var c = document.createElement('canvas');
			c.width = svgTag.clientWidth;
			c.height = svgTag.clientHeight;
			svgTag.parentNode.insertBefore(c, svgTag);
			svgTag.parentNode.removeChild(svgTag);
			var div = document.createElement('div');
			div.appendChild(svgTag);
			canvg(c, div.innerHTML);
		}
		return;
	}

	if (typeof target === 'string') {
		target = document.getElementById(target);
	}

	// store class on canvas
	if (target.svg != null) target.svg.stop();
	var svg = build(opts || {});
	// on i.e. 8 for flash canvas, we can't assign the property so check for it
	if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
		target.svg = svg;
	}

	var ctx = target.getContext('2d');
	if (typeof s.documentElement !== 'undefined') {
		// load from xml doc
		svg.loadXmlDoc(ctx, s);
	} else if (s.substr(0, 1) === '<') {
		// load from xml string
		svg.loadXml(ctx, s);
	} else {
		// load from url
		svg.load(ctx, s);
	}
};

function build (opts) {
	var svg = {opts: opts};

	svg.FRAMERATE = 30;
	svg.MAX_VIRTUAL_PIXELS = 30000;

	svg.log = function (msg) {};
	if (svg.opts.log === true && typeof console !== 'undefined') {
		svg.log = function (msg) { console.log(msg); };
	};

	// globals
	svg.init = function (ctx) {
		var uniqueId = 0;
		svg.UniqueId = function () { uniqueId++; return 'canvg' + uniqueId;	};
		svg.Definitions = {};
		svg.Styles = {};
		svg.Animations = [];
		svg.Images = [];
		svg.ctx = ctx;
		svg.ViewPort = new function () {
			this.viewPorts = [];
			this.Clear = function () { this.viewPorts = []; };
			this.SetCurrent = function (width, height) { this.viewPorts.push({ width: width, height: height }); };
			this.RemoveCurrent = function () { this.viewPorts.pop(); };
			this.Current = function () { return this.viewPorts[this.viewPorts.length - 1]; };
			this.width = function () { return this.Current().width; };
			this.height = function () { return this.Current().height; };
			this.ComputeSize = function (d) {
				if (d != null && typeof d === 'number') return d;
				if (d === 'x') return this.width();
				if (d === 'y') return this.height();
				return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
			};
		}();
	};
	svg.init();

	// images loaded
	svg.ImagesLoaded = function () {
		for (var i = 0; i < svg.Images.length; i++) {
			if (!svg.Images[i].loaded) return false;
		}
		return true;
	};

	// trim
	svg.trim = function (s) { return s.replace(/^\s+|\s+$/g, ''); };

	// compress spaces
	svg.compressSpaces = function (s) { return s.replace(/[\s\r\t\n]+/gm, ' '); };

	// ajax
	svg.ajax = function (url) {
		var AJAX;
		if (window.XMLHttpRequest) {
			AJAX = new XMLHttpRequest();
		} else {
			AJAX = new ActiveXObject('Microsoft.XMLHTTP');
		}
		if (AJAX) {
			AJAX.open('GET', url, false);
			AJAX.send(null);
			return AJAX.responseText;
		}
		return null;
	};

	// parse xml
	svg.parseXml = function (xml) {
		if (window.DOMParser) {
			var parser = new DOMParser();
			return parser.parseFromString(xml, 'text/xml');
		} else {
			xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
			var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
			xmlDoc.async = 'false';
			xmlDoc.loadXML(xml);
			return xmlDoc;
		}
	};

	svg.Property = function (name, value) {
		this.name = name;
		this.value = value;
	};
	svg.Property.prototype.getValue = function () {
		return this.value;
	};

	svg.Property.prototype.hasValue = function () {
		return (this.value != null && this.value !== '');
	};

	// return the numerical value of the property
	svg.Property.prototype.numValue = function () {
		if (!this.hasValue()) return 0;

		var n = parseFloat(this.value);
		if ((this.value + '').match(/%$/)) {
			n = n / 100.0;
		}
		return n;
	};

	svg.Property.prototype.valueOrDefault = function (def) {
		if (this.hasValue()) return this.value;
		return def;
	};

	svg.Property.prototype.numValueOrDefault = function (def) {
		if (this.hasValue()) return this.numValue();
		return def;
	};

	// color extensions
	// augment the current color value with the opacity
	svg.Property.prototype.addOpacity = function (opacityProp) {
		var newValue = this.value;
		if (opacityProp.value != null && opacityProp.value !== '' && typeof this.value === 'string') { // can only add opacity to colors, not patterns
			var color = new RGBColor(this.value);
			if (color.ok) {
				newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacityProp.numValue() + ')';
			}
		}
		return new svg.Property(this.name, newValue);
	};

	// definition extensions
	// get the definition from the definitions table
	svg.Property.prototype.getDefinition = function () {
		var name = this.value.match(/#([^)'"]+)/);
		if (name) { name = name[1]; }
		if (!name) { name = this.value; }
		return svg.Definitions[name];
	};

	svg.Property.prototype.isUrlDefinition = function () {
		return this.value.indexOf('url(') === 0;
	};

	svg.Property.prototype.getFillStyleDefinition = function (e, opacityProp) {
		var def = this.getDefinition();

		// gradient
		if (def != null && def.createGradient) {
			return def.createGradient(svg.ctx, e, opacityProp);
		}

		// pattern
		if (def != null && def.createPattern) {
			if (def.getHrefAttribute().hasValue()) {
				var pt = def.attribute('patternTransform');
				def = def.getHrefAttribute().getDefinition();
				if (pt.hasValue()) { def.attribute('patternTransform', true).value = pt.value; }
			}
			return def.createPattern(svg.ctx, e);
		}

		return null;
	};

	// length extensions
	svg.Property.prototype.getDPI = function (viewPort) {
		return 96.0; // TODO: compute?
	};

	svg.Property.prototype.getEM = function (viewPort) {
		var em = 12;

		var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
		if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);

		return em;
	};

	svg.Property.prototype.getUnits = function () {
		var s = this.value + '';
		return s.replace(/[0-9.-]/g, '');
	};

	// get the length as pixels
	svg.Property.prototype.toPixels = function (viewPort, processPercent) {
		if (!this.hasValue()) return 0;
		var s = this.value + '';
		if (s.match(/em$/)) return this.numValue() * this.getEM(viewPort);
		if (s.match(/ex$/)) return this.numValue() * this.getEM(viewPort) / 2.0;
		if (s.match(/px$/)) return this.numValue();
		if (s.match(/pt$/)) return this.numValue() * this.getDPI(viewPort) * (1.0 / 72.0);
		if (s.match(/pc$/)) return this.numValue() * 15;
		if (s.match(/cm$/)) return this.numValue() * this.getDPI(viewPort) / 2.54;
		if (s.match(/mm$/)) return this.numValue() * this.getDPI(viewPort) / 25.4;
		if (s.match(/in$/)) return this.numValue() * this.getDPI(viewPort);
		if (s.match(/%$/)) return this.numValue() * svg.ViewPort.ComputeSize(viewPort);
		var n = this.numValue();
		if (processPercent && n < 1.0) return n * svg.ViewPort.ComputeSize(viewPort);
		return n;
	};

	// time extensions
	// get the time as milliseconds
	svg.Property.prototype.toMilliseconds = function () {
		if (!this.hasValue()) return 0;
		var s = this.value + '';
		if (s.match(/s$/)) return this.numValue() * 1000;
		if (s.match(/ms$/)) return this.numValue();
		return this.numValue();
	};

	// angle extensions
	// get the angle as radians
	svg.Property.prototype.toRadians = function () {
		if (!this.hasValue()) return 0;
		var s = this.value + '';
		if (s.match(/deg$/)) return this.numValue() * (Math.PI / 180.0);
		if (s.match(/grad$/)) return this.numValue() * (Math.PI / 200.0);
		if (s.match(/rad$/)) return this.numValue();
		return this.numValue() * (Math.PI / 180.0);
	};

	// text extensions
	// get the text baseline
	var textBaselineMapping = {
		'baseline': 'alphabetic',
		'before-edge': 'top',
		'text-before-edge': 'top',
		'middle': 'middle',
		'central': 'middle',
		'after-edge': 'bottom',
		'text-after-edge': 'bottom',
		'ideographic': 'ideographic',
		'alphabetic': 'alphabetic',
		'hanging': 'hanging',
		'mathematical': 'alphabetic'
	};
	svg.Property.prototype.toTextBaseline = function () {
		if (!this.hasValue()) return null;
		return textBaselineMapping[this.value];
	};

	// fonts
	svg.Font = new function () {
		this.Styles = 'normal|italic|oblique|inherit';
		this.Variants = 'normal|small-caps|inherit';
		this.Weights = 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit';

		this.CreateFont = function (fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
			var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
			return {
				fontFamily: fontFamily || f.fontFamily,
				fontSize: fontSize || f.fontSize,
				fontStyle: fontStyle || f.fontStyle,
				fontWeight: fontWeight || f.fontWeight,
				fontVariant: fontVariant || f.fontVariant,
				toString: function () {
					return [
						this.fontStyle, this.fontVariant, this.fontWeight,
						this.fontSize, this.fontFamily
					].join(' ');
				}
			};
		};

		var that = this;
		this.Parse = function (s) {
			var f = {};
			var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
			var set = {fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false};
			var ff = '';
			for (var i = 0; i < d.length; i++) {
				if (!set.fontStyle && that.Styles.indexOf(d[i]) > -1) {
					if (d[i] !== 'inherit') f.fontStyle = d[i]; set.fontStyle = true;
				} else if (!set.fontVariant && that.Variants.indexOf(d[i]) > -1) {
					if (d[i] !== 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true;
				} else if (!set.fontWeight && that.Weights.indexOf(d[i]) > -1) {
					if (d[i] !== 'inherit') f.fontWeight = d[i]; set.fontStyle = set.fontVariant = set.fontWeight = true;
				} else if (!set.fontSize) {
					if (d[i] !== 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
				} else {
					if (d[i] !== 'inherit') ff += d[i];
				}
			}
			if (ff !== '') f.fontFamily = ff;
			return f;
		};
	}();

	// points and paths
	svg.ToNumberArray = function (s) {
		var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
		for (var i = 0; i < a.length; i++) {
			a[i] = parseFloat(a[i]);
		}
		return a;
	};
	svg.Point = function (x, y) {
		this.x = x;
		this.y = y;
	};
	svg.Point.prototype.angleTo = function (p) {
		return Math.atan2(p.y - this.y, p.x - this.x);
	};

	svg.Point.prototype.applyTransform = function (v) {
		var xp = this.x * v[0] + this.y * v[2] + v[4];
		var yp = this.x * v[1] + this.y * v[3] + v[5];
		this.x = xp;
		this.y = yp;
	};

	svg.CreatePoint = function (s) {
		var a = svg.ToNumberArray(s);
		return new svg.Point(a[0], a[1]);
	};
	svg.CreatePath = function (s) {
		var a = svg.ToNumberArray(s);
		var path = [];
		for (var i = 0; i < a.length; i += 2) {
			path.push(new svg.Point(a[i], a[i + 1]));
		}
		return path;
	};

	// bounding box
	svg.BoundingBox = function (x1, y1, x2, y2) { // pass in initial points if you want
		this.x1 = Number.NaN;
		this.y1 = Number.NaN;
		this.x2 = Number.NaN;
		this.y2 = Number.NaN;

		this.x = function () { return this.x1; };
		this.y = function () { return this.y1; };
		this.width = function () { return this.x2 - this.x1; };
		this.height = function () { return this.y2 - this.y1; };

		this.addPoint = function (x, y) {
			if (x != null) {
				if (isNaN(this.x1) || isNaN(this.x2)) {
					this.x1 = x;
					this.x2 = x;
				}
				if (x < this.x1) this.x1 = x;
				if (x > this.x2) this.x2 = x;
			}

			if (y != null) {
				if (isNaN(this.y1) || isNaN(this.y2)) {
					this.y1 = y;
					this.y2 = y;
				}
				if (y < this.y1) this.y1 = y;
				if (y > this.y2) this.y2 = y;
			}
		};
		this.addX = function (x) { this.addPoint(x, null); };
		this.addY = function (y) { this.addPoint(null, y); };

		this.addBoundingBox = function (bb) {
			this.addPoint(bb.x1, bb.y1);
			this.addPoint(bb.x2, bb.y2);
		};

		this.addQuadraticCurve = function (p0x, p0y, p1x, p1y, p2x, p2y) {
			var cp1x = p0x + 2 / 3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
			var cp1y = p0y + 2 / 3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
			var cp2x = cp1x + 1 / 3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
			var cp2y = cp1y + 1 / 3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
			this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y,	cp2y, p2x, p2y);
		};

		this.addBezierCurve = function (p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
			// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
			var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
			this.addPoint(p0[0], p0[1]);
			this.addPoint(p3[0], p3[1]);

			for (var i = 0; i <= 1; i++) {
				var f = function (t) {
					return Math.pow(1 - t, 3) * p0[i] +
					3 * Math.pow(1 - t, 2) * t * p1[i] +
					3 * (1 - t) * Math.pow(t, 2) * p2[i] +
					Math.pow(t, 3) * p3[i];
				};

				var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
				var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
				var c = 3 * p1[i] - 3 * p0[i];

				if (a === 0) {
					if (b === 0) continue;
					var t = -c / b;
					if (t > 0 && t < 1) {
						if (i === 0) this.addX(f(t));
						if (i === 1) this.addY(f(t));
					}
					continue;
				}

				var b2ac = Math.pow(b, 2) - 4 * c * a;
				if (b2ac < 0) continue;
				var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
				if (t1 > 0 && t1 < 1) {
					if (i === 0) this.addX(f(t1));
					if (i === 1) this.addY(f(t1));
				}
				var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
				if (t2 > 0 && t2 < 1) {
					if (i === 0) this.addX(f(t2));
					if (i === 1) this.addY(f(t2));
				}
			}
		};

		this.isPointInBox = function (x, y) {
			return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
		};

		this.addPoint(x1, y1);
		this.addPoint(x2, y2);
	};

	// transforms
	svg.Transform = function (v) {
		var that = this;
		this.Type = {};

		// translate
		this.Type.translate = function (s) {
			this.p = svg.CreatePoint(s);
			this.apply = function (ctx) {
				ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
			};
			this.unapply = function (ctx) {
				ctx.translate(-1.0 * this.p.x || 0.0, -1.0 * this.p.y || 0.0);
			};
			this.applyToPoint = function (p) {
				p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
			};
		};

		// rotate
		this.Type.rotate = function (s) {
			var a = svg.ToNumberArray(s);
			this.angle = new svg.Property('angle', a[0]);
			this.cx = a[1] || 0;
			this.cy = a[2] || 0;
			this.apply = function (ctx) {
				ctx.translate(this.cx, this.cy);
				ctx.rotate(this.angle.toRadians());
				ctx.translate(-this.cx, -this.cy);
			};
			this.unapply = function (ctx) {
				ctx.translate(this.cx, this.cy);
				ctx.rotate(-1.0 * this.angle.toRadians());
				ctx.translate(-this.cx, -this.cy);
			};
			this.applyToPoint = function (p) {
				var a = this.angle.toRadians();
				p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
				p.applyTransform([Math.cos(a), Math.sin(a), -Math.sin(a), Math.cos(a), 0, 0]);
				p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
			};
		};

		this.Type.scale = function (s) {
			this.p = svg.CreatePoint(s);
			this.apply = function (ctx) {
				ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
			};
			this.unapply = function (ctx) {
				ctx.scale(1.0 / this.p.x || 1.0, 1.0 / this.p.y || this.p.x || 1.0);
			};
			this.applyToPoint = function (p) {
				p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
			};
		};

		this.Type.matrix = function (s) {
			this.m = svg.ToNumberArray(s);
			this.apply = function (ctx) {
				ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
			};
			this.applyToPoint = function (p) {
				p.applyTransform(this.m);
			};
		};

		this.Type.SkewBase = function (s) {
			this.base = that.Type.matrix;
			this.base(s);
			this.angle = new svg.Property('angle', s);
		};
		this.Type.SkewBase.prototype = new this.Type.matrix();

		this.Type.skewX = function (s) {
			this.base = that.Type.SkewBase;
			this.base(s);
			this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
		};
		this.Type.skewX.prototype = new this.Type.SkewBase();

		this.Type.skewY = function (s) {
			this.base = that.Type.SkewBase;
			this.base(s);
			this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
		};
		this.Type.skewY.prototype = new this.Type.SkewBase();

		this.transforms = [];

		this.apply = function (ctx) {
			for (var i = 0; i < this.transforms.length; i++) {
				this.transforms[i].apply(ctx);
			}
		};

		this.unapply = function (ctx) {
			for (var i = this.transforms.length - 1; i >= 0; i--) {
				this.transforms[i].unapply(ctx);
			}
		};

		this.applyToPoint = function (p) {
			for (var i = 0; i < this.transforms.length; i++) {
				this.transforms[i].applyToPoint(p);
			}
		};

		var data = svg.trim(svg.compressSpaces(v)).replace(/\)([a-zA-Z])/g, ') $1').replace(/\)(\s?,\s?)/g, ') ').split(/\s(?=[a-z])/);
		for (var i = 0; i < data.length; i++) {
			var type = svg.trim(data[i].split('(')[0]);
			var s = data[i].split('(')[1].replace(')', '');
			var transform = new this.Type[type](s);
			transform.type = type;
			this.transforms.push(transform);
		}
	};

	// aspect ratio
	svg.AspectRatio = function (ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
		// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
		aspectRatio = svg.compressSpaces(aspectRatio);
		aspectRatio = aspectRatio.replace(/^defer\s/, ''); // ignore defer
		var align = aspectRatio.split(' ')[0] || 'xMidYMid';
		var meetOrSlice = aspectRatio.split(' ')[1] || 'meet';

		// calculate scale
		var scaleX = width / desiredWidth;
		var scaleY = height / desiredHeight;
		var scaleMin = Math.min(scaleX, scaleY);
		var scaleMax = Math.max(scaleX, scaleY);
		if (meetOrSlice === 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
		if (meetOrSlice === 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }

		refX = new svg.Property('refX', refX);
		refY = new svg.Property('refY', refY);
		if (refX.hasValue() && refY.hasValue()) {
			ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
		} else {
			// align
			if (align.match(/^xMid/) && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
			if (align.match(/YMid$/) && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
			if (align.match(/^xMax/) && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width - desiredWidth, 0);
			if (align.match(/YMax$/) && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height - desiredHeight);
		}

		// scale
		if (align === 'none') ctx.scale(scaleX, scaleY);
		else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);
		else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax);

		// translate
		ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
	};

	// elements
	svg.Element = {};

	svg.EmptyProperty = new svg.Property('EMPTY', '');

	svg.Element.ElementBase = function (node) {
		this.attributes = {};
		this.styles = {};
		this.children = [];

		// get or create attribute
		this.attribute = function (name, createIfNotExists) {
			var a = this.attributes[name];
			if (a != null) return a;

			if (createIfNotExists === true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
			return a || svg.EmptyProperty;
		};

		this.getHrefAttribute = function () {
			for (var a in this.attributes) {
				if (a.match(/:href$/)) {
					return this.attributes[a];
				}
			}
			return svg.EmptyProperty;
		};

		// get or create style, crawls up node tree
		this.style = function (name, createIfNotExists, skipAncestors) {
			var s = this.styles[name];
			if (s != null) return s;

			var a = this.attribute(name);
			if (a != null && a.hasValue()) {
				this.styles[name] = a; // move up to me to cache
				return a;
			}

			if (skipAncestors !== true) {
				var p = this.parent;
				if (p != null) {
					var ps = p.style(name);
					if (ps != null && ps.hasValue()) {
						return ps;
					}
				}
			}

			if (createIfNotExists === true) { s = new svg.Property(name, ''); this.styles[name] = s; }
			return s || svg.EmptyProperty;
		};

		// base render
		this.render = function (ctx) {
			// don't render display=none
			if (this.style('display').value === 'none') return;

			// don't render visibility=hidden
			if (this.style('visibility').value === 'hidden') return;

			ctx.save();
			if (this.attribute('mask').hasValue()) { // mask
				var mask = this.attribute('mask').getDefinition();
				if (mask != null) mask.apply(ctx, this);
			} else if (this.style('filter').hasValue()) { // filter
				var filter = this.style('filter').getDefinition();
				if (filter != null) filter.apply(ctx, this);
			} else {
				this.setContext(ctx);
				this.renderChildren(ctx);
				this.clearContext(ctx);
			}
			ctx.restore();
		};

		// base set context
		this.setContext = function (ctx) {
			// OVERRIDE ME!
		};

		// base clear context
		this.clearContext = function (ctx) {
			// OVERRIDE ME!
		};

		// base render children
		this.renderChildren = function (ctx) {
			for (var i = 0; i < this.children.length; i++) {
				this.children[i].render(ctx);
			}
		};

		this.addChild = function (childNode, create) {
			var child = childNode;
			if (create) child = svg.CreateElement(childNode);
			child.parent = this;
			if (child.type !== 'title') { this.children.push(child);	}
		};

		if (node != null && node.nodeType === 1) { // ELEMENT_NODE
			// add children
			for (var i = 0, childNode; (childNode = node.childNodes[i]); i++) {
				if (childNode.nodeType === 1) this.addChild(childNode, true); // ELEMENT_NODE
				if (this.captureTextNodes && (childNode.nodeType === 3 || childNode.nodeType === 4)) {
					var text = childNode.nodeValue || childNode.text || '';
					if (svg.trim(svg.compressSpaces(text)) !== '') {
						this.addChild(new svg.Element.tspan(childNode), false); // TEXT_NODE
					}
				}
			}

			// add attributes
			for (var i = 0; i < node.attributes.length; i++) {
				var attribute = node.attributes[i];
				this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.nodeValue);
			}

			// add tag styles
			var styles = svg.Styles[node.nodeName];
			if (styles != null) {
				for (var name in styles) {
					this.styles[name] = styles[name];
				}
			}

			// add class styles
			if (this.attribute('class').hasValue()) {
				var classes = svg.compressSpaces(this.attribute('class').value).split(' ');
				for (var j = 0; j < classes.length; j++) {
					styles = svg.Styles['.' + classes[j]];
					if (styles != null) {
						for (var name in styles) {
							this.styles[name] = styles[name];
						}
					}
					styles = svg.Styles[node.nodeName + '.' + classes[j]];
					if (styles != null) {
						for (var name in styles) {
							this.styles[name] = styles[name];
						}
					}
				}
			}

			// add id styles
			if (this.attribute('id').hasValue()) {
				var styles = svg.Styles['#' + this.attribute('id').value];
				if (styles != null) {
					for (var name in styles) {
						this.styles[name] = styles[name];
					}
				}
			}

			// add inline styles
			if (this.attribute('style').hasValue()) {
				var styles = this.attribute('style').value.split(';');
				for (var i = 0; i < styles.length; i++) {
					if (svg.trim(styles[i]) !== '') {
						var style = styles[i].split(':');
						var name = svg.trim(style[0]);
						var value = svg.trim(style[1]);
						this.styles[name] = new svg.Property(name, value);
					}
				}
			}

			// add id
			if (this.attribute('id').hasValue()) {
				if (svg.Definitions[this.attribute('id').value] == null) {
					svg.Definitions[this.attribute('id').value] = this;
				}
			}
		}
	};

	svg.Element.RenderedElementBase = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.setContext = function (ctx) {
			// fill
			if (this.style('fill').isUrlDefinition()) {
				var fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
				if (fs != null) ctx.fillStyle = fs;
			} else if (this.style('fill').hasValue()) {
				var fillStyle = this.style('fill');
				if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
				ctx.fillStyle = (fillStyle.value === 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
			}
			if (this.style('fill-opacity').hasValue()) {
				var fillStyle = new svg.Property('fill', ctx.fillStyle);
				fillStyle = fillStyle.addOpacity(this.style('fill-opacity'));
				ctx.fillStyle = fillStyle.value;
			}

			// stroke
			if (this.style('stroke').isUrlDefinition()) {
				var fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
				if (fs != null) ctx.strokeStyle = fs;
			} else if (this.style('stroke').hasValue()) {
				var strokeStyle = this.style('stroke');
				if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
				ctx.strokeStyle = (strokeStyle.value === 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
			}
			if (this.style('stroke-opacity').hasValue()) {
				var strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
				strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity'));
				ctx.strokeStyle = strokeStyle.value;
			}
			if (this.style('stroke-width').hasValue()) {
				var newLineWidth = this.style('stroke-width').toPixels();
				ctx.lineWidth = newLineWidth === 0 ? 0.001 : newLineWidth; // browsers don't respect 0
			}
			if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
			if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
			if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
			if (this.style('stroke-dasharray').hasValue() && this.style('stroke-dasharray').value !== 'none') {
				var gaps = svg.ToNumberArray(this.style('stroke-dasharray').value);
				if (typeof ctx.setLineDash !== 'undefined') {
					ctx.setLineDash(gaps);
				} else if (typeof ctx.webkitLineDash !== 'undefined') {
					ctx.webkitLineDash = gaps;
				} else if (typeof ctx.mozDash !== 'undefined' && !(gaps.length === 1 && gaps[0] === 0)) {
					ctx.mozDash = gaps;
				}

				var offset = this.style('stroke-dashoffset').numValueOrDefault(1);
				if (typeof ctx.lineDashOffset !== 'undefined') {
					ctx.lineDashOffset = offset;
				} else if (typeof ctx.webkitLineDashOffset !== 'undefined') {
					ctx.webkitLineDashOffset = offset;
				} else if (typeof ctx.mozDashOffset !== 'undefined') {
					ctx.mozDashOffset = offset;
				}
			}

			// font
			if (typeof ctx.font !== 'undefined') {
				ctx.font = svg.Font.CreateFont(
					this.style('font-style').value,
					this.style('font-variant').value,
					this.style('font-weight').value,
					this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
					this.style('font-family').value).toString();
			}

			// transform
			if (this.attribute('transform').hasValue()) {
				var transform = new svg.Transform(this.attribute('transform').value);
				transform.apply(ctx);
			}

			// clip
			if (this.style('clip-path', false, true).hasValue()) {
				var clip = this.style('clip-path', false, true).getDefinition();
				if (clip != null) clip.apply(ctx);
			}

			// opacity
			if (this.style('opacity').hasValue()) {
				ctx.globalAlpha = this.style('opacity').numValue();
			}
		};
	};
	svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase();

	svg.Element.PathElementBase = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.path = function (ctx) {
			if (ctx != null) ctx.beginPath();
			return new svg.BoundingBox();
		};

		this.renderChildren = function (ctx) {
			this.path(ctx);
			svg.Mouse.checkPath(this, ctx);
			if (ctx.fillStyle !== '') {
				if (this.style('fill-rule').valueOrDefault('inherit') !== 'inherit') {
					ctx.fill(this.style('fill-rule').value);
				} else {
					ctx.fill();
				}
			}
			if (ctx.strokeStyle !== '') ctx.stroke();

			var markers = this.getMarkers();
			if (markers != null) {
				if (this.style('marker-start').isUrlDefinition()) {
					var marker = this.style('marker-start').getDefinition();
					marker.render(ctx, markers[0][0], markers[0][1]);
				}
				if (this.style('marker-mid').isUrlDefinition()) {
					var marker = this.style('marker-mid').getDefinition();
					for (var i = 1; i < markers.length - 1; i++) {
						marker.render(ctx, markers[i][0], markers[i][1]);
					}
				}
				if (this.style('marker-end').isUrlDefinition()) {
					var marker = this.style('marker-end').getDefinition();
					marker.render(ctx, markers[markers.length - 1][0], markers[markers.length - 1][1]);
				}
			}
		};

		this.getBoundingBox = function () {
			return this.path();
		};

		this.getMarkers = function () {
			return null;
		};
	};
	svg.Element.PathElementBase.prototype = new svg.Element.RenderedElementBase();

	// svg element
	svg.Element.svg = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.baseClearContext = this.clearContext;
		this.clearContext = function (ctx) {
			this.baseClearContext(ctx);
			svg.ViewPort.RemoveCurrent();
		};

		this.baseSetContext = this.setContext;
		this.setContext = function (ctx) {
			// initial values and defaults
			ctx.strokeStyle = 'rgba(0,0,0,0)';
			ctx.lineCap = 'butt';
			ctx.lineJoin = 'miter';
			ctx.miterLimit = 4;
			if (typeof ctx.font !== 'undefined' && typeof window.getComputedStyle !== 'undefined') {
				ctx.font = window.getComputedStyle(ctx.canvas).getPropertyValue('font');
			}

			this.baseSetContext(ctx);

			// create new view port
			if (!this.attribute('x').hasValue()) this.attribute('x', true).value = 0;
			if (!this.attribute('y').hasValue()) this.attribute('y', true).value = 0;
			ctx.translate(this.attribute('x').toPixels('x'), this.attribute('y').toPixels('y'));

			var width = svg.ViewPort.width();
			var height = svg.ViewPort.height();

			if (!this.attribute('width').hasValue()) this.attribute('width', true).value = '100%';
			if (!this.attribute('height').hasValue()) this.attribute('height', true).value = '100%';
			if (typeof this.root === 'undefined') {
				width = this.attribute('width').toPixels('x');
				height = this.attribute('height').toPixels('y');

				var x = 0;
				var y = 0;
				if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
					x = -this.attribute('refX').toPixels('x');
					y = -this.attribute('refY').toPixels('y');
				}

				if (this.attribute('overflow').valueOrDefault('hidden') !== 'visible') {
					ctx.beginPath();
					ctx.moveTo(x, y);
					ctx.lineTo(width, y);
					ctx.lineTo(width, height);
					ctx.lineTo(x, height);
					ctx.closePath();
					ctx.clip();
				}
			}
			svg.ViewPort.SetCurrent(width, height);

			// viewbox
			if (this.attribute('viewBox').hasValue()) {
				var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
				var minX = viewBox[0];
				var minY = viewBox[1];
				width = viewBox[2];
				height = viewBox[3];

				svg.AspectRatio(
					ctx,
					this.attribute('preserveAspectRatio').value,
					svg.ViewPort.width(),
					width,
					svg.ViewPort.height(),
					height,
					minX,
					minY,
					this.attribute('refX').value,
					this.attribute('refY').value
				);

				svg.ViewPort.RemoveCurrent();
				svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
			}
		};
	};
	svg.Element.svg.prototype = new svg.Element.RenderedElementBase();

	// rect element
	svg.Element.rect = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		this.path = function (ctx) {
			var x = this.attribute('x').toPixels('x');
			var y = this.attribute('y').toPixels('y');
			var width = this.attribute('width').toPixels('x');
			var height = this.attribute('height').toPixels('y');
			var rx = this.attribute('rx').toPixels('x');
			var ry = this.attribute('ry').toPixels('y');
			if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
			if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
			rx = Math.min(rx, width / 2.0);
			ry = Math.min(ry, height / 2.0);
			if (ctx != null) {
				ctx.beginPath();
				ctx.moveTo(x + rx, y);
				ctx.lineTo(x + width - rx, y);
				ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
				ctx.lineTo(x + width, y + height - ry);
				ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
				ctx.lineTo(x + rx, y + height);
				ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
				ctx.lineTo(x, y + ry);
				ctx.quadraticCurveTo(x, y, x + rx, y);
				ctx.closePath();
			}

			return new svg.BoundingBox(x, y, x + width, y + height);
		};
	};
	svg.Element.rect.prototype = new svg.Element.PathElementBase();

	// circle element
	svg.Element.circle = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		this.path = function (ctx) {
			var cx = this.attribute('cx').toPixels('x');
			var cy = this.attribute('cy').toPixels('y');
			var r = this.attribute('r').toPixels();

			if (ctx != null) {
				ctx.beginPath();
				ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
				ctx.closePath();
			}

			return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
		};
	};
	svg.Element.circle.prototype = new svg.Element.PathElementBase();

	// ellipse element
	svg.Element.ellipse = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		this.path = function (ctx) {
			var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
			var rx = this.attribute('rx').toPixels('x');
			var ry = this.attribute('ry').toPixels('y');
			var cx = this.attribute('cx').toPixels('x');
			var cy = this.attribute('cy').toPixels('y');

			if (ctx != null) {
				ctx.beginPath();
				ctx.moveTo(cx, cy - ry);
				ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
				ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
				ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
				ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
				ctx.closePath();
			}

			return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
		};
	};
	svg.Element.ellipse.prototype = new svg.Element.PathElementBase();

	// line element
	svg.Element.line = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		this.getPoints = function () {
			return [
				new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
				new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))];
		};

		this.path = function (ctx) {
			var points = this.getPoints();

			if (ctx != null) {
				ctx.beginPath();
				ctx.moveTo(points[0].x, points[0].y);
				ctx.lineTo(points[1].x, points[1].y);
			}

			return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
		};

		this.getMarkers = function () {
			var points = this.getPoints();
			var a = points[0].angleTo(points[1]);
			return [[points[0], a], [points[1], a]];
		};
	};
	svg.Element.line.prototype = new svg.Element.PathElementBase();

	// polyline element
	svg.Element.polyline = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		this.points = svg.CreatePath(this.attribute('points').value);
		this.path = function (ctx) {
			var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
			if (ctx != null) {
				ctx.beginPath();
				ctx.moveTo(this.points[0].x, this.points[0].y);
			}
			for (var i = 1; i < this.points.length; i++) {
				bb.addPoint(this.points[i].x, this.points[i].y);
				if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
			}
			return bb;
		};

		this.getMarkers = function () {
			var markers = [];
			for (var i = 0; i < this.points.length - 1; i++) {
				markers.push([this.points[i], this.points[i].angleTo(this.points[i + 1])]);
			}
			markers.push([this.points[this.points.length - 1], markers[markers.length - 1][1]]);
			return markers;
		};
	};
	svg.Element.polyline.prototype = new svg.Element.PathElementBase();

	// polygon element
	svg.Element.polygon = function (node) {
		this.base = svg.Element.polyline;
		this.base(node);

		this.basePath = this.path;
		this.path = function (ctx) {
			var bb = this.basePath(ctx);
			if (ctx != null) {
				ctx.lineTo(this.points[0].x, this.points[0].y);
				ctx.closePath();
			}
			return bb;
		};
	};
	svg.Element.polygon.prototype = new svg.Element.polyline();

	// path element
	svg.Element.path = function (node) {
		this.base = svg.Element.PathElementBase;
		this.base(node);

		var d = this.attribute('d').value;
		// TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
		d = d.replace(/,/gm, ' '); // get rid of all commas
		d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2'); // separate commands from commands
		d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2'); // separate commands from commands
		d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm, '$1 $2'); // separate commands from points
		d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2'); // separate commands from points
		d = d.replace(/([0-9])([+-])/gm, '$1 $2'); // separate digits when no comma
		d = d.replace(/(\.[0-9]*)(\.)/gm, '$1 $2'); // separate digits when no comma
		d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm, '$1 $3 $4 '); // shorthand elliptical arc path syntax
		d = svg.compressSpaces(d); // compress multiple spaces
		d = svg.trim(d);
		this.PathParser = new function (d) {
			this.tokens = d.split(' ');

			this.reset = function () {
				this.i = -1;
				this.command = '';
				this.previousCommand = '';
				this.start = new svg.Point(0, 0);
				this.control = new svg.Point(0, 0);
				this.current = new svg.Point(0, 0);
				this.points = [];
				this.angles = [];
			};

			this.isEnd = function () {
				return this.i >= this.tokens.length - 1;
			};

			this.isCommandOrEnd = function () {
				if (this.isEnd()) return true;
				return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
			};

			this.isRelativeCommand = function () {
				switch (this.command) {
				case 'm':
				case 'l':
				case 'h':
				case 'v':
				case 'c':
				case 's':
				case 'q':
				case 't':
				case 'a':
				case 'z':
					return true;
				}
				return false;
			};

			this.getToken = function () {
				this.i++;
				return this.tokens[this.i];
			};

			this.getScalar = function () {
				return parseFloat(this.getToken());
			};

			this.nextCommand = function () {
				this.previousCommand = this.command;
				this.command = this.getToken();
			};

			this.getPoint = function () {
				var p = new svg.Point(this.getScalar(), this.getScalar());
				return this.makeAbsolute(p);
			};

			this.getAsControlPoint = function () {
				var p = this.getPoint();
				this.control = p;
				return p;
			};

			this.getAsCurrentPoint = function () {
				var p = this.getPoint();
				this.current = p;
				return p;
			};

			this.getReflectedControlPoint = function () {
				if (this.previousCommand.toLowerCase() !== 'c' &&
					this.previousCommand.toLowerCase() !== 's' &&
					this.previousCommand.toLowerCase() !== 'q' &&
					this.previousCommand.toLowerCase() !== 't') {
					return this.current;
				}

				// reflect point
				var p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
				return p;
			};

			this.makeAbsolute = function (p) {
				if (this.isRelativeCommand()) {
					p.x += this.current.x;
					p.y += this.current.y;
				}
				return p;
			};

			this.addMarker = function (p, from, priorTo) {
				// if the last angle isn't filled in because we didn't have this point yet ...
				if (priorTo != null && this.angles.length > 0 && this.angles[this.angles.length - 1] == null) {
					this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
				}
				this.addMarkerAngle(p, from == null ? null : from.angleTo(p));
			};

			this.addMarkerAngle = function (p, a) {
				this.points.push(p);
				this.angles.push(a);
			};

			this.getMarkerPoints = function () { return this.points; };
			this.getMarkerAngles = function () {
				for (var i = 0; i < this.angles.length; i++) {
					if (this.angles[i] == null) {
						for (var j = i + 1; j < this.angles.length; j++) {
							if (this.angles[j] != null) {
								this.angles[i] = this.angles[j];
								break;
							}
						}
					}
				}
				return this.angles;
			};
		}(d);

		this.path = function (ctx) {
			var pp = this.PathParser;
			pp.reset();

			var bb = new svg.BoundingBox();
			if (ctx != null) ctx.beginPath();
			while (!pp.isEnd()) {
				pp.nextCommand();
				switch (pp.command) {
				case 'M':
				case 'm':
					var p = pp.getAsCurrentPoint();
					pp.addMarker(p);
					bb.addPoint(p.x, p.y);
					if (ctx != null) ctx.moveTo(p.x, p.y);
					pp.start = pp.current;
					while (!pp.isCommandOrEnd()) {
						var p = pp.getAsCurrentPoint();
						pp.addMarker(p, pp.start);
						bb.addPoint(p.x, p.y);
						if (ctx != null) ctx.lineTo(p.x, p.y);
					}
					break;
				case 'L':
				case 'l':
					while (!pp.isCommandOrEnd()) {
						var c = pp.current;
						var p = pp.getAsCurrentPoint();
						pp.addMarker(p, c);
						bb.addPoint(p.x, p.y);
						if (ctx != null) ctx.lineTo(p.x, p.y);
					}
					break;
				case 'H':
				case 'h':
					while (!pp.isCommandOrEnd()) {
						var newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
						pp.addMarker(newP, pp.current);
						pp.current = newP;
						bb.addPoint(pp.current.x, pp.current.y);
						if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
					}
					break;
				case 'V':
				case 'v':
					while (!pp.isCommandOrEnd()) {
						var newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
						pp.addMarker(newP, pp.current);
						pp.current = newP;
						bb.addPoint(pp.current.x, pp.current.y);
						if (ctx != null) ctx.lineTo(pp.current.x, pp.current.y);
					}
					break;
				case 'C':
				case 'c':
					while (!pp.isCommandOrEnd()) {
						var curr = pp.current;
						var p1 = pp.getPoint();
						var cntrl = pp.getAsControlPoint();
						var cp = pp.getAsCurrentPoint();
						pp.addMarker(cp, cntrl, p1);
						bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
						if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
					}
					break;
				case 'S':
				case 's':
					while (!pp.isCommandOrEnd()) {
						var curr = pp.current;
						var p1 = pp.getReflectedControlPoint();
						var cntrl = pp.getAsControlPoint();
						var cp = pp.getAsCurrentPoint();
						pp.addMarker(cp, cntrl, p1);
						bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
						if (ctx != null) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
					}
					break;
				case 'Q':
				case 'q':
					while (!pp.isCommandOrEnd()) {
						var curr = pp.current;
						var cntrl = pp.getAsControlPoint();
						var cp = pp.getAsCurrentPoint();
						pp.addMarker(cp, cntrl, cntrl);
						bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
						if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
					}
					break;
				case 'T':
				case 't':
					while (!pp.isCommandOrEnd()) {
						var curr = pp.current;
						var cntrl = pp.getReflectedControlPoint();
						pp.control = cntrl;
						var cp = pp.getAsCurrentPoint();
						pp.addMarker(cp, cntrl, cntrl);
						bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
						if (ctx != null) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
					}
					break;
				case 'A':
				case 'a':
					while (!pp.isCommandOrEnd()) {
						var curr = pp.current;
						var rx = pp.getScalar();
						var ry = pp.getScalar();
						var xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
						var largeArcFlag = pp.getScalar();
						var sweepFlag = pp.getScalar();
						var cp = pp.getAsCurrentPoint();

						// Conversion from endpoint to center parameterization
						// https://www.w3.org/TR/SVG11/implnote.html#ArcConversionEndpointToCenter

						// x1', y1'
						var currp = new svg.Point(
							Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
							-Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
						);
						// adjust radii
						var l = Math.pow(currp.x, 2) / Math.pow(rx, 2) + Math.pow(currp.y, 2) / Math.pow(ry, 2);
						if (l > 1) {
							rx *= Math.sqrt(l);
							ry *= Math.sqrt(l);
						}
						// cx', cy'
						var s = (largeArcFlag === sweepFlag ? -1 : 1) * Math.sqrt(
							((Math.pow(rx, 2) * Math.pow(ry, 2)) - (Math.pow(rx, 2) * Math.pow(currp.y, 2)) - (Math.pow(ry, 2) * Math.pow(currp.x, 2))) /
							(Math.pow(rx, 2) * Math.pow(currp.y, 2) + Math.pow(ry, 2) * Math.pow(currp.x, 2))
						);
						if (isNaN(s)) s = 0;
						var cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
						// cx, cy
						var centp = new svg.Point(
							(curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
							(curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
						);
						// vector magnitude
						var m = function (v) { return Math.sqrt(Math.pow(v[0], 2) + Math.pow(v[1], 2)); };
						// ratio between two vectors
						var r = function (u, v) { return (u[0] * v[0] + u[1] * v[1]) / (m(u) * m(v)); };
						// angle between two vectors
						var a = function (u, v) { return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(r(u, v)); };
						// initial angle
						var a1 = a([1, 0], [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry]);
						// angle delta
						var u = [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry];
						var v = [(-currp.x - cpp.x) / rx, (-currp.y - cpp.y) / ry];
						var ad = a(u, v);
						if (r(u, v) <= -1) ad = Math.PI;
						if (r(u, v) >= 1) ad = 0;

						// for markers
						var dir = 1 - sweepFlag ? 1.0 : -1.0;
						var ah = a1 + dir * (ad / 2.0);
						var halfWay = new svg.Point(
							centp.x + rx * Math.cos(ah),
							centp.y + ry * Math.sin(ah)
						);
						pp.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
						pp.addMarkerAngle(cp, ah - dir * Math.PI);

						bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
						if (ctx != null) {
							var r = rx > ry ? rx : ry;
							var sx = rx > ry ? 1 : rx / ry;
							var sy = rx > ry ? ry / rx : 1;

							ctx.translate(centp.x, centp.y);
							ctx.rotate(xAxisRotation);
							ctx.scale(sx, sy);
							ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
							ctx.scale(1 / sx, 1 / sy);
							ctx.rotate(-xAxisRotation);
							ctx.translate(-centp.x, -centp.y);
						}
					}
					break;
				case 'Z':
				case 'z':
					if (ctx != null) ctx.closePath();
					pp.current = pp.start;
				}
			}

			return bb;
		};

		this.getMarkers = function () {
			var points = this.PathParser.getMarkerPoints();
			var angles = this.PathParser.getMarkerAngles();

			var markers = [];
			for (var i = 0; i < points.length; i++) {
				markers.push([points[i], angles[i]]);
			}
			return markers;
		};
	};
	svg.Element.path.prototype = new svg.Element.PathElementBase();

	// pattern element
	svg.Element.pattern = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.createPattern = function (ctx, element) {
			var width = this.attribute('width').toPixels('x', true);
			var height = this.attribute('height').toPixels('y', true);

			// render me using a temporary svg element
			var tempSvg = new svg.Element.svg();
			tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
			tempSvg.attributes['width'] = new svg.Property('width', width + 'px');
			tempSvg.attributes['height'] = new svg.Property('height', height + 'px');
			tempSvg.attributes['transform'] = new svg.Property('transform', this.attribute('patternTransform').value);
			tempSvg.children = this.children;

			var c = document.createElement('canvas');
			c.width = width;
			c.height = height;
			var cctx = c.getContext('2d');
			if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
				cctx.translate(this.attribute('x').toPixels('x', true), this.attribute('y').toPixels('y', true));
			}
			// render 3x3 grid so when we transform there's no white space on edges
			for (var x = -1; x <= 1; x++) {
				for (var y = -1; y <= 1; y++) {
					cctx.save();
					cctx.translate(x * c.width, y * c.height);
					tempSvg.render(cctx);
					cctx.restore();
				}
			}
			var pattern = ctx.createPattern(c, 'repeat');
			return pattern;
		};
	};
	svg.Element.pattern.prototype = new svg.Element.ElementBase();

	// marker element
	svg.Element.marker = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.baseRender = this.render;
		this.render = function (ctx, point, angle) {
			ctx.translate(point.x, point.y);
			if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(angle);
			if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
			ctx.save();

			// render me using a temporary svg element
			var tempSvg = new svg.Element.svg();
			tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
			tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
			tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
			tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
			tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
			tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
			tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
			tempSvg.children = this.children;
			tempSvg.render(ctx);

			ctx.restore();
			if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(1 / ctx.lineWidth, 1 / ctx.lineWidth);
			if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(-angle);
			ctx.translate(-point.x, -point.y);
		};
	};
	svg.Element.marker.prototype = new svg.Element.ElementBase();

	// definitions element
	svg.Element.defs = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.render = function (ctx) {
			// NOOP
		};
	};
	svg.Element.defs.prototype = new svg.Element.ElementBase();

	// base for gradients
	svg.Element.GradientBase = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');

		this.stops = [];
		for (var i = 0; i < this.children.length; i++) {
			var child = this.children[i];
			if (child.type === 'stop') this.stops.push(child);
		}

		this.getGradient = function () {
			// OVERRIDE ME!
		};

		this.createGradient = function (ctx, element, parentOpacityProp) {
			var stopsContainer = this;
			if (this.getHrefAttribute().hasValue()) {
				stopsContainer = this.getHrefAttribute().getDefinition();
			}

			var addParentOpacity = function (color) {
				if (parentOpacityProp.hasValue()) {
					var p = new svg.Property('color', color);
					return p.addOpacity(parentOpacityProp).value;
				}
				return color;
			};

			var g = this.getGradient(ctx, element);
			if (g == null) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
			for (var i = 0; i < stopsContainer.stops.length; i++) {
				g.addColorStop(stopsContainer.stops[i].offset, addParentOpacity(stopsContainer.stops[i].color));
			}

			if (this.attribute('gradientTransform').hasValue()) {
				// render as transformed pattern on temporary canvas
				var rootView = svg.ViewPort.viewPorts[0];

				var rect = new svg.Element.rect();
				rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
				rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
				rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
				rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);

				var group = new svg.Element.g();
				group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
				group.children = [ rect ];

				var tempSvg = new svg.Element.svg();
				tempSvg.attributes['x'] = new svg.Property('x', 0);
				tempSvg.attributes['y'] = new svg.Property('y', 0);
				tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
				tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
				tempSvg.children = [ group ];

				var c = document.createElement('canvas');
				c.width = rootView.width;
				c.height = rootView.height;
				var tempCtx = c.getContext('2d');
				tempCtx.fillStyle = g;
				tempSvg.render(tempCtx);
				return tempCtx.createPattern(c, 'no-repeat');
			}

			return g;
		};
	};
	svg.Element.GradientBase.prototype = new svg.Element.ElementBase();

	// linear gradient element
	svg.Element.linearGradient = function (node) {
		this.base = svg.Element.GradientBase;
		this.base(node);

		this.getGradient = function (ctx, element) {
			var bb = this.gradientUnits === 'objectBoundingBox'
				? element.getBoundingBox()
				: null;

			if (!this.attribute('x1').hasValue() &&
				!this.attribute('y1').hasValue() &&
				!this.attribute('x2').hasValue() &&
				!this.attribute('y2').hasValue()
			) {
				this.attribute('x1', true).value = 0;
				this.attribute('y1', true).value = 0;
				this.attribute('x2', true).value = 1;
				this.attribute('y2', true).value = 0;
			}

			var x1 = (this.gradientUnits === 'objectBoundingBox'
				? bb.x() + bb.width() * this.attribute('x1').numValue()
				: this.attribute('x1').toPixels('x'));
			var y1 = (this.gradientUnits === 'objectBoundingBox'
				? bb.y() + bb.height() * this.attribute('y1').numValue()
				: this.attribute('y1').toPixels('y'));
			var x2 = (this.gradientUnits === 'objectBoundingBox'
				? bb.x() + bb.width() * this.attribute('x2').numValue()
				: this.attribute('x2').toPixels('x'));
			var y2 = (this.gradientUnits === 'objectBoundingBox'
				? bb.y() + bb.height() * this.attribute('y2').numValue()
				: this.attribute('y2').toPixels('y'));

			if (x1 === x2 && y1 === y2) return null;
			return ctx.createLinearGradient(x1, y1, x2, y2);
		};
	};
	svg.Element.linearGradient.prototype = new svg.Element.GradientBase();

	// radial gradient element
	svg.Element.radialGradient = function (node) {
		this.base = svg.Element.GradientBase;
		this.base(node);

		this.getGradient = function (ctx, element) {
			var bb = element.getBoundingBox();

			if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
			if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
			if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';

			var cx = (this.gradientUnits === 'objectBoundingBox'
				? bb.x() + bb.width() * this.attribute('cx').numValue()
				: this.attribute('cx').toPixels('x'));
			var cy = (this.gradientUnits === 'objectBoundingBox'
				? bb.y() + bb.height() * this.attribute('cy').numValue()
				: this.attribute('cy').toPixels('y'));

			var fx = cx;
			var fy = cy;
			if (this.attribute('fx').hasValue()) {
				fx = (this.gradientUnits === 'objectBoundingBox'
					? bb.x() + bb.width() * this.attribute('fx').numValue()
					: this.attribute('fx').toPixels('x'));
			}
			if (this.attribute('fy').hasValue()) {
				fy = (this.gradientUnits === 'objectBoundingBox'
					? bb.y() + bb.height() * this.attribute('fy').numValue()
					: this.attribute('fy').toPixels('y'));
			}

			var r = (this.gradientUnits === 'objectBoundingBox'
				? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
				: this.attribute('r').toPixels());

			return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
		};
	};
	svg.Element.radialGradient.prototype = new svg.Element.GradientBase();

	// gradient stop element
	svg.Element.stop = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.offset = this.attribute('offset').numValue();
		if (this.offset < 0) this.offset = 0;
		if (this.offset > 1) this.offset = 1;

		var stopColor = this.style('stop-color');
		if (this.style('stop-opacity').hasValue()) stopColor = stopColor.addOpacity(this.style('stop-opacity'));
		this.color = stopColor.value;
	};
	svg.Element.stop.prototype = new svg.Element.ElementBase();

	// animation base element
	svg.Element.AnimateBase = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		svg.Animations.push(this);

		this.duration = 0.0;
		this.begin = this.attribute('begin').toMilliseconds();
		this.maxDuration = this.begin + this.attribute('dur').toMilliseconds();

		this.getProperty = function () {
			var attributeType = this.attribute('attributeType').value;
			var attributeName = this.attribute('attributeName').value;

			if (attributeType === 'CSS') {
				return this.parent.style(attributeName, true);
			}
			return this.parent.attribute(attributeName, true);
		};

		this.initialValue = null;
		this.initialUnits = '';
		this.removed = false;

		this.calcValue = function () {
			// OVERRIDE ME!
			return '';
		};

		this.update = function (delta) {
			// set initial value
			if (this.initialValue == null) {
				this.initialValue = this.getProperty().value;
				this.initialUnits = this.getProperty().getUnits();
			}

			// if we're past the end time
			if (this.duration > this.maxDuration) {
				// loop for indefinitely repeating animations
				if (this.attribute('repeatCount').value === 'indefinite' ||
					this.attribute('repeatDur').value === 'indefinite') {
					this.duration = 0.0;
				} else if (this.attribute('fill').valueOrDefault('remove') === 'freeze' && !this.frozen) {
					this.frozen = true;
					this.parent.animationFrozen = true;
					this.parent.animationFrozenValue = this.getProperty().value;
				} else if (this.attribute('fill').valueOrDefault('remove') === 'remove' && !this.removed) {
					this.removed = true;
					this.getProperty().value = this.parent.animationFrozen ? this.parent.animationFrozenValue : this.initialValue;
					return true;
				}
				return false;
			}
			this.duration = this.duration + delta;

			// if we're past the begin time
			var updated = false;
			if (this.begin < this.duration) {
				var newValue = this.calcValue(); // tween

				if (this.attribute('type').hasValue()) {
					// for transform, etc.
					var type = this.attribute('type').value;
					newValue = type + '(' + newValue + ')';
				}

				this.getProperty().value = newValue;
				updated = true;
			}

			return updated;
		};

		this.from = this.attribute('from');
		this.to = this.attribute('to');
		this.values = this.attribute('values');
		if (this.values.hasValue()) this.values.value = this.values.value.split(';');

		// fraction of duration we've covered
		this.progress = function () {
			var ret = { progress: (this.duration - this.begin) / (this.maxDuration - this.begin) };
			if (this.values.hasValue()) {
				var p = ret.progress * (this.values.value.length - 1);
				var lb = Math.floor(p), ub = Math.ceil(p);
				ret.from = new svg.Property('from', parseFloat(this.values.value[lb]));
				ret.to = new svg.Property('to', parseFloat(this.values.value[ub]));
				ret.progress = (p - lb) / (ub - lb);
			} else {
				ret.from = this.from;
				ret.to = this.to;
			}
			return ret;
		};
	};
	svg.Element.AnimateBase.prototype = new svg.Element.ElementBase();

	// animate element
	svg.Element.animate = function (node) {
		this.base = svg.Element.AnimateBase;
		this.base(node);

		this.calcValue = function () {
			var p = this.progress();

			// tween value linearly
			var newValue = p.from.numValue() + (p.to.numValue() - p.from.numValue()) * p.progress;
			return newValue + this.initialUnits;
		};
	};
	svg.Element.animate.prototype = new svg.Element.AnimateBase();

	// animate color element
	svg.Element.animateColor = function (node) {
		this.base = svg.Element.AnimateBase;
		this.base(node);

		this.calcValue = function () {
			var p = this.progress();
			var from = new RGBColor(p.from.value);
			var to = new RGBColor(p.to.value);

			if (from.ok && to.ok) {
				// tween color linearly
				var r = from.r + (to.r - from.r) * p.progress;
				var g = from.g + (to.g - from.g) * p.progress;
				var b = from.b + (to.b - from.b) * p.progress;
				return 'rgb(' + parseInt(r, 10) + ',' + parseInt(g, 10) + ',' + parseInt(b, 10) + ')';
			}
			return this.attribute('from').value;
		};
	};
	svg.Element.animateColor.prototype = new svg.Element.AnimateBase();

	// animate transform element
	svg.Element.animateTransform = function (node) {
		this.base = svg.Element.AnimateBase;
		this.base(node);

		this.calcValue = function () {
			var p = this.progress();

			// tween value linearly
			var from = svg.ToNumberArray(p.from.value);
			var to = svg.ToNumberArray(p.to.value);
			var newValue = '';
			for (var i = 0; i < from.length; i++) {
				newValue += from[i] + (to[i] - from[i]) * p.progress + ' ';
			}
			return newValue;
		};
	};
	svg.Element.animateTransform.prototype = new svg.Element.animate();

	// font element
	svg.Element.font = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.horizAdvX = this.attribute('horiz-adv-x').numValue();

		this.isRTL = false;
		this.isArabic = false;
		this.fontFace = null;
		this.missingGlyph = null;
		this.glyphs = [];
		for (var i = 0; i < this.children.length; i++) {
			var child = this.children[i];
			if (child.type === 'font-face') {
				this.fontFace = child;
				if (child.style('font-family').hasValue()) {
					svg.Definitions[child.style('font-family').value] = this;
				}
			} else if (child.type === 'missing-glyph') {
				this.missingGlyph = child;
			} else if (child.type === 'glyph') {
				if (child.arabicForm !== '') {
					this.isRTL = true;
					this.isArabic = true;
					if (typeof this.glyphs[child.unicode] === 'undefined') {
						this.glyphs[child.unicode] = [];
					}
					this.glyphs[child.unicode][child.arabicForm] = child;
				} else {
					this.glyphs[child.unicode] = child;
				}
			}
		}
	};
	svg.Element.font.prototype = new svg.Element.ElementBase();

	// font-face element
	svg.Element.fontface = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.ascent = this.attribute('ascent').value;
		this.descent = this.attribute('descent').value;
		this.unitsPerEm = this.attribute('units-per-em').numValue();
	};
	svg.Element.fontface.prototype = new svg.Element.ElementBase();

	// missing-glyph element
	svg.Element.missingglyph = function (node) {
		this.base = svg.Element.path;
		this.base(node);

		this.horizAdvX = 0;
	};
	svg.Element.missingglyph.prototype = new svg.Element.path();

	// glyph element
	svg.Element.glyph = function (node) {
		this.base = svg.Element.path;
		this.base(node);

		this.horizAdvX = this.attribute('horiz-adv-x').numValue();
		this.unicode = this.attribute('unicode').value;
		this.arabicForm = this.attribute('arabic-form').value;
	};
	svg.Element.glyph.prototype = new svg.Element.path();

	// text element
	svg.Element.text = function (node) {
		this.captureTextNodes = true;
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.baseSetContext = this.setContext;
		this.setContext = function (ctx) {
			this.baseSetContext(ctx);

			var textBaseline = this.style('dominant-baseline').toTextBaseline();
			if (textBaseline == null) textBaseline = this.style('alignment-baseline').toTextBaseline();
			if (textBaseline != null) ctx.textBaseline = textBaseline;
		};

		this.getBoundingBox = function () {
			var x = this.attribute('x').toPixels('x');
			var y = this.attribute('y').toPixels('y');
			var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
			return new svg.BoundingBox(x, y - fontSize, x + Math.floor(fontSize * 2.0 / 3.0) * this.children[0].getText().length, y);
		};

		this.renderChildren = function (ctx) {
			this.x = this.attribute('x').toPixels('x');
			this.y = this.attribute('y').toPixels('y');
			this.x += this.getAnchorDelta(ctx, this, 0);
			for (var i = 0; i < this.children.length; i++) {
				this.renderChild(ctx, this, i);
			}
		};

		this.getAnchorDelta = function (ctx, parent, startI) {
			var textAnchor = this.style('text-anchor').valueOrDefault('start');
			if (textAnchor !== 'start') {
				var width = 0;
				for (var i = startI; i < parent.children.length; i++) {
					var child = parent.children[i];
					if (i > startI && child.attribute('x').hasValue()) break; // new group
					width += child.measureTextRecursive(ctx);
				}
				return -1 * (textAnchor === 'end' ? width : width / 2.0);
			}
			return 0;
		};

		this.renderChild = function (ctx, parent, i) {
			var child = parent.children[i];
			if (child.attribute('x').hasValue()) {
				child.x = child.attribute('x').toPixels('x') + this.getAnchorDelta(ctx, parent, i);
				if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
			} else {
				if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
				if (child.attribute('dx').hasValue()) this.x += child.attribute('dx').toPixels('x');
				child.x = this.x;
			}
			this.x = child.x + child.measureText(ctx);

			if (child.attribute('y').hasValue()) {
				child.y = child.attribute('y').toPixels('y');
				if (child.attribute('dy').hasValue()) child.y += child.attribute('dy').toPixels('y');
			} else {
				if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
				if (child.attribute('dy').hasValue()) this.y += child.attribute('dy').toPixels('y');
				child.y = this.y;
			}
			this.y = child.y;

			child.render(ctx);

			for (var i = 0; i < child.children.length; i++) {
				this.renderChild(ctx, child, i);
			}
		};
	};
	svg.Element.text.prototype = new svg.Element.RenderedElementBase();

	// text base
	svg.Element.TextElementBase = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.getGlyph = function (font, text, i) {
			var c = text[i];
			var glyph = null;
			if (font.isArabic) {
				var arabicForm = 'isolated';
				if ((i === 0 || text[i - 1] === ' ') && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'terminal';
				if (i > 0 && text[i - 1] !== ' ' && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'medial';
				if (i > 0 && text[i - 1] !== ' ' && (i === text.length - 1 || text[i + 1] === ' ')) arabicForm = 'initial';
				if (typeof font.glyphs[c] !== 'undefined') {
					glyph = font.glyphs[c][arabicForm];
					if (glyph == null && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
				}
			} else {
				glyph = font.glyphs[c];
			}
			if (glyph == null) glyph = font.missingGlyph;
			return glyph;
		};

		this.renderChildren = function (ctx) {
			var customFont = this.parent.style('font-family').getDefinition();
			if (customFont != null) {
				var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
				var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
				var text = this.getText();
				if (customFont.isRTL) text = text.split('').reverse().join('');

				var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
				for (var i = 0; i < text.length; i++) {
					var glyph = this.getGlyph(customFont, text, i);
					var scale = fontSize / customFont.fontFace.unitsPerEm;
					ctx.translate(this.x, this.y);
					ctx.scale(scale, -scale);
					var lw = ctx.lineWidth;
					ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
					if (fontStyle === 'italic') ctx.transform(1, 0, 0.4, 1, 0, 0);
					glyph.render(ctx);
					if (fontStyle === 'italic') ctx.transform(1, 0, -0.4, 1, 0, 0);
					ctx.lineWidth = lw;
					ctx.scale(1 / scale, -1 / scale);
					ctx.translate(-this.x, -this.y);

					this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
					if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
						this.x += dx[i];
					}
				}
				return;
			}

			if (ctx.fillStyle !== '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
			if (ctx.strokeStyle !== '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
		};

		this.getText = function () {
			// OVERRIDE ME
		};

		this.measureTextRecursive = function (ctx) {
			var width = this.measureText(ctx);
			for (var i = 0; i < this.children.length; i++) {
				width += this.children[i].measureTextRecursive(ctx);
			}
			return width;
		};

		this.measureText = function (ctx) {
			var customFont = this.parent.style('font-family').getDefinition();
			if (customFont != null) {
				var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
				var measure = 0;
				var text = this.getText();
				if (customFont.isRTL) text = text.split('').reverse().join('');
				var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
				for (var i = 0; i < text.length; i++) {
					var glyph = this.getGlyph(customFont, text, i);
					measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
					if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
						measure += dx[i];
					}
				}
				return measure;
			}

			var textToMeasure = svg.compressSpaces(this.getText());
			if (!ctx.measureText) return textToMeasure.length * 10;

			ctx.save();
			this.setContext(ctx);
			var width = ctx.measureText(textToMeasure).width;
			ctx.restore();
			return width;
		};
	};
	svg.Element.TextElementBase.prototype = new svg.Element.RenderedElementBase();

	// tspan
	svg.Element.tspan = function (node) {
		this.captureTextNodes = true;
		this.base = svg.Element.TextElementBase;
		this.base(node);

		this.text = node.nodeValue || node.text || '';
		this.getText = function () {
			return this.text;
		};
	};
	svg.Element.tspan.prototype = new svg.Element.TextElementBase();

	// tref
	svg.Element.tref = function (node) {
		this.base = svg.Element.TextElementBase;
		this.base(node);

		this.getText = function () {
			var element = this.getHrefAttribute().getDefinition();
			if (element != null) return element.children[0].getText();
		};
	};
	svg.Element.tref.prototype = new svg.Element.TextElementBase();

	// a element
	svg.Element.a = function (node) {
		this.base = svg.Element.TextElementBase;
		this.base(node);

		this.hasText = true;
		for (var i = 0, childNode; (childNode = node.childNodes[i]); i++) {
			if (childNode.nodeType !== 3) this.hasText = false;
		}

		// this might contain text
		this.text = this.hasText ? node.childNodes[0].nodeValue : '';
		this.getText = function () {
			return this.text;
		};

		this.baseRenderChildren = this.renderChildren;
		this.renderChildren = function (ctx) {
			if (this.hasText) {
				// render as text element
				this.baseRenderChildren(ctx);
				var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
				svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
			} else {
				// render as temporary group
				var g = new svg.Element.g();
				g.children = this.children;
				g.parent = this;
				g.render(ctx);
			}
		};

		this.onclick = function () {
			window.open(this.getHrefAttribute().value);
		};

		this.onmousemove = function () {
			svg.ctx.canvas.style.cursor = 'pointer';
		};
	};
	svg.Element.a.prototype = new svg.Element.TextElementBase();

	// image element
	svg.Element.image = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		var href = this.getHrefAttribute().value;
		if (href === '') {
			return;
		}
		var isSvg = href.match(/\.svg$/);

		svg.Images.push(this);
		this.loaded = false;
		if (!isSvg) {
			this.img = document.createElement('img');
			if (svg.opts['useCORS'] === true) { this.img.crossOrigin = 'Anonymous'; }
			var self = this;
			this.img.onload = function () { self.loaded = true; };
			this.img.onerror = function () { svg.log('ERROR: image "' + href + '" not found'); self.loaded = true; };
			this.img.src = href;
		} else {
			this.img = svg.ajax(href);
			this.loaded = true;
		}

		this.renderChildren = function (ctx) {
			var x = this.attribute('x').toPixels('x');
			var y = this.attribute('y').toPixels('y');

			var width = this.attribute('width').toPixels('x');
			var height = this.attribute('height').toPixels('y');
			if (width === 0 || height === 0) return;

			ctx.save();
			if (isSvg) {
				ctx.drawSvg(this.img, x, y, width, height);
			} else {
				ctx.translate(x, y);
				svg.AspectRatio(
					ctx,
					this.attribute('preserveAspectRatio').value,
					width,
					this.img.width,
					height,
					this.img.height,
					0,
					0
				);
				ctx.drawImage(this.img, 0, 0);
			}
			ctx.restore();
		};

		this.getBoundingBox = function () {
			var x = this.attribute('x').toPixels('x');
			var y = this.attribute('y').toPixels('y');
			var width = this.attribute('width').toPixels('x');
			var height = this.attribute('height').toPixels('y');
			return new svg.BoundingBox(x, y, x + width, y + height);
		};
	};
	svg.Element.image.prototype = new svg.Element.RenderedElementBase();

	// group element
	svg.Element.g = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.getBoundingBox = function () {
			var bb = new svg.BoundingBox();
			for (var i = 0; i < this.children.length; i++) {
				bb.addBoundingBox(this.children[i].getBoundingBox());
			}
			return bb;
		};
	};
	svg.Element.g.prototype = new svg.Element.RenderedElementBase();

	// symbol element
	svg.Element.symbol = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.render = function (ctx) {
			// NO RENDER
		};
	};
	svg.Element.symbol.prototype = new svg.Element.RenderedElementBase();

	// style element
	svg.Element.style = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		// text, or spaces then CDATA
		var css = '';
		for (var i = 0, childNode; (childNode = node.childNodes[i]); i++) {
			css += childNode.nodeValue;
		}
		css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, ''); // remove comments
		css = svg.compressSpaces(css); // replace whitespace
		var cssDefs = css.split('}');
		for (var i = 0; i < cssDefs.length; i++) {
			if (svg.trim(cssDefs[i]) !== '') {
				var cssDef = cssDefs[i].split('{');
				var cssClasses = cssDef[0].split(',');
				var cssProps = cssDef[1].split(';');
				for (var j = 0; j < cssClasses.length; j++) {
					var cssClass = svg.trim(cssClasses[j]);
					if (cssClass !== '') {
						var props = {};
						for (var k = 0; k < cssProps.length; k++) {
							var prop = cssProps[k].indexOf(':');
							var name = cssProps[k].substr(0, prop);
							var value = cssProps[k].substr(prop + 1, cssProps[k].length - prop);
							if (name != null && value != null) {
								props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
							}
						}
						svg.Styles[cssClass] = props;
						if (cssClass === '@font-face') {
							var fontFamily = props['font-family'].value.replace(/"/g, '');
							var srcs = props['src'].value.split(',');
							for (var s = 0; s < srcs.length; s++) {
								if (srcs[s].indexOf('format("svg")') > 0) {
									var urlStart = srcs[s].indexOf('url');
									var urlEnd = srcs[s].indexOf(')', urlStart);
									var url = srcs[s].substr(urlStart + 5, urlEnd - urlStart - 6);
									var doc = svg.parseXml(svg.ajax(url));
									var fonts = doc.getElementsByTagName('font');
									for (var f = 0; f < fonts.length; f++) {
										var font = svg.CreateElement(fonts[f]);
										svg.Definitions[fontFamily] = font;
									}
								}
							}
						}
					}
				}
			}
		}
	};
	svg.Element.style.prototype = new svg.Element.ElementBase();

	// use element
	svg.Element.use = function (node) {
		this.base = svg.Element.RenderedElementBase;
		this.base(node);

		this.baseSetContext = this.setContext;
		this.setContext = function (ctx) {
			this.baseSetContext(ctx);
			if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
			if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
		};

		var element = this.getHrefAttribute().getDefinition();

		this.path = function (ctx) {
			if (element != null) element.path(ctx);
		};

		this.getBoundingBox = function () {
			if (element != null) return element.getBoundingBox();
		};

		this.renderChildren = function (ctx) {
			if (element != null) {
				var tempSvg = element;
				if (element.type === 'symbol') {
					// render me using a temporary svg element in symbol cases (http://www.w3.org/TR/SVG/struct.html#UseElement)
					tempSvg = new svg.Element.svg();
					tempSvg.type = 'svg';
					tempSvg.attributes['viewBox'] = new svg.Property('viewBox', element.attribute('viewBox').value);
					tempSvg.attributes['preserveAspectRatio'] = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
					tempSvg.attributes['overflow'] = new svg.Property('overflow', element.attribute('overflow').value);
					tempSvg.children = element.children;
				}
				if (tempSvg.type === 'svg') {
					// if symbol or svg, inherit width/height from me
					if (this.attribute('width').hasValue()) tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
					if (this.attribute('height').hasValue()) tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
				}
				var oldParent = tempSvg.parent;
				tempSvg.parent = null;
				tempSvg.render(ctx);
				tempSvg.parent = oldParent;
			}
		};
	};
	svg.Element.use.prototype = new svg.Element.RenderedElementBase();

	// mask element
	svg.Element.mask = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.apply = function (ctx, element) {
			// render as temp svg
			var x = this.attribute('x').toPixels('x');
			var y = this.attribute('y').toPixels('y');
			var width = this.attribute('width').toPixels('x');
			var height = this.attribute('height').toPixels('y');

			if (width === 0 && height === 0) {
				var bb = new svg.BoundingBox();
				for (var i = 0; i < this.children.length; i++) {
					bb.addBoundingBox(this.children[i].getBoundingBox());
				}
				var x = Math.floor(bb.x1);
				var y = Math.floor(bb.y1);
				var width = Math.floor(bb.width());
				var	height = Math.floor(bb.height());
			}

			// temporarily remove mask to avoid recursion
			var mask = element.attribute('mask').value;
			element.attribute('mask').value = '';

			var cMask = document.createElement('canvas');
			cMask.width = x + width;
			cMask.height = y + height;
			var maskCtx = cMask.getContext('2d');
			this.renderChildren(maskCtx);

			var c = document.createElement('canvas');
			c.width = x + width;
			c.height = y + height;
			var tempCtx = c.getContext('2d');
			element.render(tempCtx);
			tempCtx.globalCompositeOperation = 'destination-in';
			tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
			tempCtx.fillRect(0, 0, x + width, y + height);

			ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
			ctx.fillRect(0, 0, x + width, y + height);

			// reassign mask
			element.attribute('mask').value = mask;
		};

		this.render = function (ctx) {
			// NO RENDER
		};
	};
	svg.Element.mask.prototype = new svg.Element.ElementBase();

	// clip element
	svg.Element.clipPath = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.apply = function (ctx) {
			for (var i = 0; i < this.children.length; i++) {
				var child = this.children[i];
				if (typeof child.path !== 'undefined') {
					var transform = null;
					if (child.attribute('transform').hasValue()) {
						transform = new svg.Transform(child.attribute('transform').value);
						transform.apply(ctx);
					}
					child.path(ctx);
					ctx.clip();
					if (transform) { transform.unapply(ctx); }
				}
			}
		};

		this.render = function (ctx) {
			// NO RENDER
		};
	};
	svg.Element.clipPath.prototype = new svg.Element.ElementBase();

	// filters
	svg.Element.filter = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.apply = function (ctx, element) {
			// render as temp svg
			var bb = element.getBoundingBox();
			var x = Math.floor(bb.x1);
			var y = Math.floor(bb.y1);
			var width = Math.floor(bb.width());
			var	height = Math.floor(bb.height());

			// temporarily remove filter to avoid recursion
			var filter = element.style('filter').value;
			element.style('filter').value = '';

			var px = 0, py = 0;
			for (var i = 0; i < this.children.length; i++) {
				var efd = this.children[i].extraFilterDistance || 0;
				px = Math.max(px, efd);
				py = Math.max(py, efd);
			}

			var c = document.createElement('canvas');
			c.width = width + 2 * px;
			c.height = height + 2 * py;
			var tempCtx = c.getContext('2d');
			tempCtx.translate(-x + px, -y + py);
			element.render(tempCtx);

			// apply filters
			for (var i = 0; i < this.children.length; i++) {
				this.children[i].apply(tempCtx, 0, 0, width + 2 * px, height + 2 * py);
			}

			// render on me
			ctx.drawImage(c, 0, 0, width + 2 * px, height + 2 * py, x - px, y - py, width + 2 * px, height + 2 * py);

			// reassign filter
			element.style('filter', true).value = filter;
		};

		this.render = function (ctx) {
			// NO RENDER
		};
	};
	svg.Element.filter.prototype = new svg.Element.ElementBase();

	svg.Element.feMorphology = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.apply = function (ctx, x, y, width, height) {
			// TODO: implement
		};
	};
	svg.Element.feMorphology.prototype = new svg.Element.ElementBase();

	svg.Element.feComposite = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.apply = function (ctx, x, y, width, height) {
			// TODO: implement
		};
	};
	svg.Element.feComposite.prototype = new svg.Element.ElementBase();

	svg.Element.feColorMatrix = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		var matrix = svg.ToNumberArray(this.attribute('values').value);
		switch (this.attribute('type').valueOrDefault('matrix')) { // http://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
		case 'saturate':
			var s = matrix[0];
			matrix = [
				0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0,
				0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0,
				0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0,
				0, 0, 0, 1, 0,
				0, 0, 0, 0, 1
			];
			break;
		case 'hueRotate':
			var a = matrix[0] * Math.PI / 180.0;
			var c = function (m1, m2, m3) { return m1 + Math.cos(a) * m2 + Math.sin(a) * m3; };
			matrix = [
				c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0,
				c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0,
				c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0,
				0, 0, 0, 1, 0,
				0, 0, 0, 0, 1
			];
			break;
		case 'luminanceToAlpha':
			matrix = [
				0, 0, 0, 0, 0,
				0, 0, 0, 0, 0,
				0, 0, 0, 0, 0,
				0.2125, 0.7154, 0.0721, 0, 0,
				0, 0, 0, 0, 1
			];
			break;
		}

		function imGet (img, x, y, width, height, rgba) {
			return img[y * width * 4 + x * 4 + rgba];
		}

		function imSet (img, x, y, width, height, rgba, val) {
			img[y * width * 4 + x * 4 + rgba] = val;
		}

		function m (i, v) {
			var mi = matrix[i];
			return mi * (mi < 0 ? v - 255 : v);
		}

		this.apply = function (ctx, x, y, width, height) {
			// assuming x==0 && y==0 for now
			var srcData = ctx.getImageData(0, 0, width, height);
			for (var y = 0; y < height; y++) {
				for (var x = 0; x < width; x++) {
					var r = imGet(srcData.data, x, y, width, height, 0);
					var g = imGet(srcData.data, x, y, width, height, 1);
					var b = imGet(srcData.data, x, y, width, height, 2);
					var a = imGet(srcData.data, x, y, width, height, 3);
					imSet(srcData.data, x, y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
					imSet(srcData.data, x, y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
					imSet(srcData.data, x, y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
					imSet(srcData.data, x, y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
				}
			}
			ctx.clearRect(0, 0, width, height);
			ctx.putImageData(srcData, 0, 0);
		};
	};
	svg.Element.feColorMatrix.prototype = new svg.Element.ElementBase();

	svg.Element.feGaussianBlur = function (node) {
		this.base = svg.Element.ElementBase;
		this.base(node);

		this.blurRadius = Math.floor(this.attribute('stdDeviation').numValue());
		this.extraFilterDistance = this.blurRadius;

		this.apply = function (ctx, x, y, width, height) {
			if (typeof stackBlurCanvasRGBA === 'undefined') {
				svg.log('ERROR: StackBlur.js must be included for blur to work');
				return;
			}

			// StackBlur requires canvas be on document
			ctx.canvas.id = svg.UniqueId();
			ctx.canvas.style.display = 'none';
			document.body.appendChild(ctx.canvas);
			stackBlurCanvasRGBA(ctx.canvas.id, x, y, width, height, this.blurRadius);
			document.body.removeChild(ctx.canvas);
		};
	};
	svg.Element.feGaussianBlur.prototype = new svg.Element.ElementBase();

	// title element, do nothing
	svg.Element.title = function (node) {
	};
	svg.Element.title.prototype = new svg.Element.ElementBase();

	// desc element, do nothing
	svg.Element.desc = function (node) {
	};
	svg.Element.desc.prototype = new svg.Element.ElementBase();

	svg.Element.MISSING = function (node) {
		svg.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
	};
	svg.Element.MISSING.prototype = new svg.Element.ElementBase();

	// element factory
	svg.CreateElement = function (node) {
		var className = node.nodeName.replace(/^[^:]+:/, ''); // remove namespace
		className = className.replace(/-/g, ''); // remove dashes
		var e = null;
		if (typeof svg.Element[className] !== 'undefined') {
			e = new svg.Element[className](node);
		} else {
			e = new svg.Element.MISSING(node);
		}

		e.type = node.nodeName;
		return e;
	};

	// load from url
	svg.load = function (ctx, url) {
		svg.loadXml(ctx, svg.ajax(url));
	};

	// load from xml
	svg.loadXml = function (ctx, xml) {
		svg.loadXmlDoc(ctx, svg.parseXml(xml));
	};

	svg.loadXmlDoc = function (ctx, dom) {
		svg.init(ctx);

		var mapXY = function (p) {
			var e = ctx.canvas;
			while (e) {
				p.x -= e.offsetLeft;
				p.y -= e.offsetTop;
				e = e.offsetParent;
			}
			if (window.scrollX) p.x += window.scrollX;
			if (window.scrollY) p.y += window.scrollY;
			return p;
		};

		// bind mouse
		if (svg.opts['ignoreMouse'] !== true) {
			ctx.canvas.onclick = function (e) {
				var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
				svg.Mouse.onclick(p.x, p.y);
			};
			ctx.canvas.onmousemove = function (e) {
				var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
				svg.Mouse.onmousemove(p.x, p.y);
			};
		}

		var e = svg.CreateElement(dom.documentElement);
		e.root = true;

		// render loop
		var isFirstRender = true;
		var draw = function () {
			svg.ViewPort.Clear();
			if (ctx.canvas.parentNode) svg.ViewPort.SetCurrent(ctx.canvas.parentNode.clientWidth, ctx.canvas.parentNode.clientHeight);

			if (svg.opts['ignoreDimensions'] !== true) {
				// set canvas size
				if (e.style('width').hasValue()) {
					ctx.canvas.width = e.style('width').toPixels('x');
					ctx.canvas.style.width = ctx.canvas.width + 'px';
				}
				if (e.style('height').hasValue()) {
					ctx.canvas.height = e.style('height').toPixels('y');
					ctx.canvas.style.height = ctx.canvas.height + 'px';
				}
			}
			var cWidth = ctx.canvas.clientWidth || ctx.canvas.width;
			var cHeight = ctx.canvas.clientHeight || ctx.canvas.height;
			if (svg.opts['ignoreDimensions'] === true && e.style('width').hasValue() && e.style('height').hasValue()) {
				cWidth = e.style('width').toPixels('x');
				cHeight = e.style('height').toPixels('y');
			}
			svg.ViewPort.SetCurrent(cWidth, cHeight);

			if (svg.opts['offsetX'] != null) e.attribute('x', true).value = svg.opts['offsetX'];
			if (svg.opts['offsetY'] != null) e.attribute('y', true).value = svg.opts['offsetY'];
			if (svg.opts['scaleWidth'] != null || svg.opts['scaleHeight'] != null) {
				var xRatio = null, yRatio = null, viewBox = svg.ToNumberArray(e.attribute('viewBox').value);

				if (svg.opts['scaleWidth'] != null) {
					if (e.attribute('width').hasValue()) xRatio = e.attribute('width').toPixels('x') / svg.opts['scaleWidth'];
					else if (!isNaN(viewBox[2])) xRatio = viewBox[2] / svg.opts['scaleWidth'];
				}

				if (svg.opts['scaleHeight'] != null) {
					if (e.attribute('height').hasValue()) yRatio = e.attribute('height').toPixels('y') / svg.opts['scaleHeight'];
					else if (!isNaN(viewBox[3])) yRatio = viewBox[3] / svg.opts['scaleHeight'];
				}

				if (xRatio == null) { xRatio = yRatio; }
				if (yRatio == null) { yRatio = xRatio; }

				e.attribute('width', true).value = svg.opts['scaleWidth'];
				e.attribute('height', true).value = svg.opts['scaleHeight'];
				e.attribute('viewBox', true).value = '0 0 ' + (cWidth * xRatio) + ' ' + (cHeight * yRatio);
				e.attribute('preserveAspectRatio', true).value = 'none';
			}

			// clear and render
			if (svg.opts['ignoreClear'] !== true) {
				ctx.clearRect(0, 0, cWidth, cHeight);
			}
			e.render(ctx);
			if (isFirstRender) {
				isFirstRender = false;
				if (typeof svg.opts['renderCallback'] === 'function') {
					svg.opts['renderCallback'](dom);
				}
			}
		};

		var waitingForImages = true;
		if (svg.ImagesLoaded()) {
			waitingForImages = false;
			draw();
		}
		svg.intervalID = setInterval(function () {
			var needUpdate = false;

			if (waitingForImages && svg.ImagesLoaded()) {
				waitingForImages = false;
				needUpdate = true;
			}

			// need update from mouse events?
			if (svg.opts['ignoreMouse'] !== true) {
				needUpdate = needUpdate | svg.Mouse.hasEvents();
			}

			// need update from animations?
			if (svg.opts['ignoreAnimation'] !== true) {
				for (var i = 0; i < svg.Animations.length; i++) {
					needUpdate = needUpdate | svg.Animations[i].update(1000 / svg.FRAMERATE);
				}
			}

			// need update from redraw?
			if (typeof svg.opts['forceRedraw'] === 'function') {
				if (svg.opts['forceRedraw']() === true) needUpdate = true;
			}

			// render if needed
			if (needUpdate) {
				draw();
				svg.Mouse.runEvents(); // run and clear our events
			}
		}, 1000 / svg.FRAMERATE);
	};

	svg.stop = function () {
		if (svg.intervalID) {
			clearInterval(svg.intervalID);
		}
	};

	svg.Mouse = new function () {
		this.events = [];
		this.hasEvents = function () { return this.events.length !== 0; };

		this.onclick = function (x, y) {
			this.events.push({ type: 'onclick', x: x, y: y,
				run: function (e) { if (e.onclick) e.onclick(); }
			});
		};

		this.onmousemove = function (x, y) {
			this.events.push({ type: 'onmousemove', x: x, y: y,
				run: function (e) { if (e.onmousemove) e.onmousemove(); }
			});
		};

		this.eventElements = [];

		this.checkPath = function (element, ctx) {
			for (var i = 0; i < this.events.length; i++) {
				var e = this.events[i];
				if (ctx.isPointInPath && ctx.isPointInPath(e.x, e.y)) this.eventElements[i] = element;
			}
		};

		this.checkBoundingBox = function (element, bb) {
			for (var i = 0; i < this.events.length; i++) {
				var e = this.events[i];
				if (bb.isPointInBox(e.x, e.y)) this.eventElements[i] = element;
			}
		};

		this.runEvents = function () {
			svg.ctx.canvas.style.cursor = '';

			for (var i = 0; i < this.events.length; i++) {
				var e = this.events[i];
				var element = this.eventElements[i];
				while (element) {
					e.run(element);
					element = element.parent;
				}
			}

			// done running, clear
			this.events = [];
			this.eventElements = [];
		};
	}();

	return svg;
}
})();

if (typeof CanvasRenderingContext2D !== 'undefined') {
	CanvasRenderingContext2D.prototype.drawSvg = function (s, dx, dy, dw, dh) {
		canvg(this.canvas, s, {
			ignoreMouse: true,
			ignoreAnimation: true,
			ignoreDimensions: true,
			ignoreClear: true,
			offsetX: dx,
			offsetY: dy,
			scaleWidth: dw,
			scaleHeight: dh
		});
	};
}