canvg.js

/*
 * canvg.js - Javascript SVG parser and renderer on Canvas
 * version 1.5.2
 * MIT Licensed
 * Gabe Lerner (gabelerner@gmail.com)
 * https://github.com/canvg/canvg
 *
 */
 
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('rgbcolor'), require('stackblur-canvas')) :
	typeof define === 'function' && define.amd ? define(['rgbcolor', 'stackblur-canvas'], factory) :
	(global.canvg = factory(global.RGBColor,global.StackBlur));
}(this, (function (rgbcolor,stackblurCanvas) { 'use strict';

	rgbcolor = rgbcolor && rgbcolor.hasOwnProperty('default') ? rgbcolor['default'] : rgbcolor;
	stackblurCanvas = stackblurCanvas && stackblurCanvas.hasOwnProperty('default') ? stackblurCanvas['default'] : stackblurCanvas;

	function createCommonjsModule(fn, module) {
		return module = { exports: {} }, fn(module, module.exports), module.exports;
	}

	var canvg_1 = createCommonjsModule(function (module) {
	var isNode = (module.exports && typeof window === 'undefined'),
	  nodeEnv = false;
	var windowEnv;

	{
	  windowEnv = window;
	  windowEnv.DOMParser = window.DOMParser;
	}

	var defaultClientWidth = 800,
	  defaultClientHeight = 600;

	function createCanvas() {
	  var c;
	  {
	    c = document.createElement('canvas');
	  }
	  return c;
	}

	// 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
	//       enableRedraw: function => whether enable the redraw interval in node environment
	//       forceRedraw: function => will call the function on every frame, if it returns true, will redraw
	var 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;
	  }

	  var svg = build(opts || {});

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

	  // store class on canvas
	  if (target.svg != null) target.svg.stop();

	  // on i.e. 8 for flash canvas, we can't assign the property so check for it
	  if (!(target.childNodes && 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);
	  }
	};

	var matchesSelector;
	{
	  // see https://developer.mozilla.org/en-US/docs/Web/API/Element.matches
	  if (typeof Element == 'undefined') ; else if (typeof Element.prototype.matches != 'undefined') {
	    matchesSelector = function (node, selector) {
	      return node.matches(selector);
	    };
	  } else if (typeof Element.prototype.webkitMatchesSelector != 'undefined') {
	    matchesSelector = function (node, selector) {
	      return node.webkitMatchesSelector(selector);
	    };
	  } else if (typeof Element.prototype.mozMatchesSelector != 'undefined') {
	    matchesSelector = function (node, selector) {
	      return node.mozMatchesSelector(selector);
	    };
	  } else if (typeof Element.prototype.msMatchesSelector != 'undefined') {
	    matchesSelector = function (node, selector) {
	      return node.msMatchesSelector(selector);
	    };
	  } else if (typeof Element.prototype.oMatchesSelector != 'undefined') {
	    matchesSelector = function (node, selector) {
	      return node.oMatchesSelector(selector);
	    };
	  } else {
	    // requires Sizzle: https://github.com/jquery/sizzle/wiki/Sizzle-Documentation
	    // or jQuery: http://jquery.com/download/
	    // or Zepto: http://zeptojs.com/#
	    // without it, this is a ReferenceError

	    if (typeof jQuery === 'function' || typeof Zepto === 'function') {
	      matchesSelector = function (node, selector) {
	        return $(node).is(selector);
	      };
	    }

	    if (typeof matchesSelector === 'undefined' && typeof Sizzle !== 'undefined') {
	      matchesSelector = Sizzle.matchesSelector;
	    }
	  }
	}

	// slightly modified version of https://github.com/keeganstreet/specificity/blob/master/specificity.js
	var attributeRegex = /(\[[^\]]+\])/g;
	var idRegex = /(#[^\s\+>~\.\[:]+)/g;
	var classRegex = /(\.[^\s\+>~\.\[:]+)/g;
	var pseudoElementRegex = /(::[^\s\+>~\.\[:]+|:first-line|:first-letter|:before|:after)/gi;
	var pseudoClassWithBracketsRegex = /(:[\w-]+\([^\)]*\))/gi;
	var pseudoClassRegex = /(:[^\s\+>~\.\[:]+)/g;
	var elementRegex = /([^\s\+>~\.\[:]+)/g;

	function getSelectorSpecificity(selector) {
	  var typeCount = [0, 0, 0];
	  var findMatch = function (regex, type) {
	    var matches = selector.match(regex);
	    if (matches == null) {
	      return;
	    }
	    typeCount[type] += matches.length;
	    selector = selector.replace(regex, ' ');
	  };

	  selector = selector.replace(/:not\(([^\)]*)\)/g, '     $1 ');
	  selector = selector.replace(/{[\s\S]*/gm, ' ');
	  findMatch(attributeRegex, 1);
	  findMatch(idRegex, 0);
	  findMatch(classRegex, 1);
	  findMatch(pseudoElementRegex, 2);
	  findMatch(pseudoClassWithBracketsRegex, 1);
	  findMatch(pseudoClassRegex, 1);
	  selector = selector.replace(/[\*\s\+>~]/g, ' ');
	  selector = selector.replace(/[#\.]/g, ' ');
	  findMatch(elementRegex, 2);
	  return typeCount.join('');
	}

	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.StylesSpecificity = {};
	    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 (windowEnv.XMLHttpRequest) { AJAX = new windowEnv.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 (typeof Windows != 'undefined' && typeof Windows.Data != 'undefined' && typeof Windows.Data.Xml != 'undefined') {
	      var xmlDoc = new Windows.Data.Xml.Dom.XmlDocument();
	      var settings = new Windows.Data.Xml.Dom.XmlLoadSettings();
	      settings.prohibitDtd = false;
	      xmlDoc.loadXml(xml, settings);
	      return xmlDoc;
	    } else if (windowEnv.DOMParser) {
	      try {
	        var parser = new windowEnv.DOMParser(opts.xmldom || {});
	        return parser.parseFromString(xml, 'image/svg+xml');
	      } catch (e) {
	        parser = new windowEnv.DOMParser(opts.xmldom || {});
	        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);
	      var fontFamily = fontFamily || f.fontFamily;
	      return {
	        fontFamily: 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 (0 < t && t < 1) {
	            if (i == 0) this.addX(f(t));
	            if (i == 1) this.addY(f(t));
	          }
	          continue;
	        }

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

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

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

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

	    // translate
	    this.Type.translate = function (s) {
	      this.p = svg.CreatePoint(s);
	      this.apply = function (ctx) {
	        ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
	      };
	      this.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.unapply = function (ctx) {
	        var a = this.m[0];
	        var b = this.m[2];
	        var c = this.m[4];
	        var d = this.m[1];
	        var e = this.m[3];
	        var f = this.m[5];
	        var g = 0.0;
	        var h = 0.0;
	        var i = 1.0;
	        var det = 1 / (a * (e * i - f * h) - b * (d * i - f * g) + c * (d * h - e * g));
	        ctx.transform(
	          det * (e * i - f * h),
	          det * (f * g - d * i),
	          det * (c * h - b * i),
	          det * (a * i - c * g),
	          det * (b * f - c * e),
	          det * (c * d - a * f)
	        );
	      };
	      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 transformType = this.Type[type];
	      if (typeof transformType != 'undefined') {
	        var transform = new transformType(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.stylesSpecificity = {};
	    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 == 'href' || 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.style('mask').hasValue()) { // mask
	        var mask = this.style('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); }
	    };

	    this.addStylesFromStyleDefinition = function () {
	      // add styles
	      for (var selector in svg.Styles) {
	        if (selector[0] != '@' && matchesSelector(node, selector)) {
	          var styles = svg.Styles[selector];
	          var specificity = svg.StylesSpecificity[selector];
	          if (styles != null) {
	            for (var name in styles) {
	              var existingSpecificity = this.stylesSpecificity[name];
	              if (typeof existingSpecificity == 'undefined') {
	                existingSpecificity = '000';
	              }
	              if (specificity > existingSpecificity) {
	                this.styles[name] = styles[name];
	                this.stylesSpecificity[name] = specificity;
	              }
	            }
	          }
	        }
	      }
	    };

	    // Microsoft Edge fix
	    var allUppercase = new RegExp("^[A-Z\-]+$");
	    var normalizeAttributeName = function (name) {
	      if (allUppercase.test(name)) {
	        return name.toLowerCase();
	      }
	      return name;
	    };

	    if (node != null && node.nodeType == 1) { //ELEMENT_NODE
	      // add attributes
	      for (var i = 0; i < node.attributes.length; i++) {
	        var attribute = node.attributes[i];
	        var nodeName = normalizeAttributeName(attribute.nodeName);
	        this.attributes[nodeName] = new svg.Property(nodeName, attribute.value);
	      }

	      this.addStylesFromStyleDefinition();

	      // 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;
	        }
	      }

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

	  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;
	        if (fillStyle.value != 'inherit') 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;
	        if (strokeStyle.value != 'inherit') 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('paint-order').hasValue()) ctx.paintOrder = this.style('paint-order').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.style('transform', false, true).hasValue()) {
	        var transform = new svg.Transform(this.style('transform', false, true).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 (ctx.canvas.style && typeof ctx.font != 'undefined' && typeof windowEnv.getComputedStyle != 'undefined') {
	        ctx.font = windowEnv.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])]);
	      }
	      if (markers.length > 0) {
	        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
	    // As the end of a match can also be the start of the next match, we need to run this replace twice.
	    for (var i = 0; i < 2; i++)
	      d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm, '$1 $2'); // suffix commands with spaces
	    d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2'); // prefix commands with spaces
	    d = d.replace(/([0-9])([+\-])/gm, '$1 $2'); // separate digits on +- signs
	    // Again, we need to run this twice to find all occurances
	    for (var i = 0; i < 2; i++)
	      d = d.replace(/(\.[0-9]*)(\.)/gm, '$1 $2'); // separate digits when they start with a 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;
	            break;
	        }
	        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
	              // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
	              // x1', y1'
	              var currp = new svg.Point(
	                Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0, -Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
	              );
	              // adjust radii
	              var l = Math.pow(currp.x, 2) / Math.pow(rx, 2) + Math.pow(currp.y, 2) / Math.pow(ry, 2);
	              if (l > 1) {
	                rx *= Math.sqrt(l);
	                ry *= Math.sqrt(l);
	              }
	              // cx', cy'
	              var s = (largeArcFlag == sweepFlag ? -1 : 1) * Math.sqrt(
	                ((Math.pow(rx, 2) * Math.pow(ry, 2)) - (Math.pow(rx, 2) * Math.pow(currp.y, 2)) - (Math.pow(ry, 2) * Math.pow(currp.x, 2))) /
	                (Math.pow(rx, 2) * Math.pow(currp.y, 2) + Math.pow(ry, 2) * Math.pow(currp.x, 2))
	              );
	              if (isNaN(s)) s = 0;
	              var cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
	              // cx, cy
	              var centp = new svg.Point(
	                (curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
	                (curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
	              );
	              // vector magnitude
	              var m = function (v) { return Math.sqrt(Math.pow(v[0], 2) + Math.pow(v[1], 2)); };
	              // ratio between two vectors
	              var r = function (u, v) { return (u[0] * v[0] + u[1] * v[1]) / (m(u) * m(v)) };
	              // angle between two vectors
	              var a = function (u, v) { return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(r(u, v)); };
	              // initial angle
	              var a1 = a([1, 0], [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry]);
	              // angle delta
	              var u = [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry];
	              var v = [(-currp.x - cpp.x) / rx, (-currp.y - cpp.y) / ry];
	              var ad = a(u, v);
	              if (r(u, v) <= -1) ad = Math.PI;
	              if (r(u, v) >= 1) ad = 0;

	              // 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 = createCanvas();
	      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();
	          tempSvg.attributes['x'] = new svg.Property('x', x * c.width);
	          tempSvg.attributes['y'] = new svg.Property('y', 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.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.gradientUnits = function () {
	      return this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
	    };

	    this.attributesToInherit = ['gradientUnits'];

	    this.inheritStopContainer = function (stopsContainer) {
	      for (var i = 0; i < this.attributesToInherit.length; i++) {
	        var attributeToInherit = this.attributesToInherit[i];
	        if (!this.attribute(attributeToInherit).hasValue() && stopsContainer.attribute(attributeToInherit).hasValue()) {
	          this.attribute(attributeToInherit, true).value = stopsContainer.attribute(attributeToInherit).value;
	        }
	      }
	    };

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

	      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 = createCanvas();
	        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.attributesToInherit.push('x1');
	    this.attributesToInherit.push('y1');
	    this.attributesToInherit.push('x2');
	    this.attributesToInherit.push('y2');

	    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.attributesToInherit.push('cx');
	    this.attributesToInherit.push('cy');
	    this.attributesToInherit.push('r');
	    this.attributesToInherit.push('fx');
	    this.attributesToInherit.push('fy');

	    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', true);
	    if (stopColor.value === '') stopColor.value = '#000';
	    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');
	      if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
	      if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
	      this.x += this.getAnchorDelta(ctx, this, 0);
	      for (var i = 0; i < this.children.length; i++) {
	        this.renderChild(ctx, this, 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, textParent, parent, i) {
	      var child = parent.children[i];
	      if (child.attribute('x').hasValue()) {
	        child.x = child.attribute('x').toPixels('x') + textParent.getAnchorDelta(ctx, parent, i);
	        if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
	      } else {
	        if (child.attribute('dx').hasValue()) textParent.x += child.attribute('dx').toPixels('x');
	        child.x = textParent.x;
	      }
	      textParent.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 (child.attribute('dy').hasValue()) textParent.y += child.attribute('dy').toPixels('y');
	        child.y = textParent.y;
	      }
	      textParent.y = child.y;

	      child.render(ctx);

	      for (var i = 0; i < child.children.length; i++) {
	        textParent.renderChild(ctx, textParent, 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, .4, 1, 0, 0);
	          glyph.render(ctx);
	          if (fontStyle == 'italic') ctx.transform(1, 0, -.4, 1, 0, 0);
	          ctx.lineWidth = lw;
	          ctx.scale(1 / scale, -1 / scale);
	          ctx.translate(-this.x, -this.y);

	          this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
	          if (typeof dx[i] != 'undefined' && !isNaN(dx[i])) {
	            this.x += dx[i];
	          }
	        }
	        return;
	      }
	      if (ctx.paintOrder == "stroke") {
	        if (ctx.strokeStyle != '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
	        if (ctx.fillStyle != '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
	      } else {
	        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 = svg.compressSpaces(node.value || node.text || node.textContent || '');
	    this.getText = function () {
	      // if this node has children, then they own the text
	      if (this.children.length > 0) { return ''; }
	      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 = node.childNodes.length > 0;
	    for (var i = 0; i < node.childNodes.length; i++) {
	      if (node.childNodes[i].nodeType != 3) this.hasText = false;
	    }

	    // this might contain text
	    this.text = this.hasText ? node.childNodes[0].value || node.childNodes[0].data : '';
	    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 if (this.children.length > 0) {
	        // render as temporary group
	        var g = new svg.Element.g();
	        g.children = this.children;
	        g.parent = this;
	        g.render(ctx);
	      }
	    };

	    this.onclick = function () {
	      windowEnv.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);
	        if (self.loaded) {
	          if (this.img.complete === undefined || this.img.complete) {
	            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; i < node.childNodes.length; i++) {
	      css += node.childNodes[i].data;
	    }
	    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 = svg.Styles[cssClass] || {};
	            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;
	            svg.StylesSpecificity[cssClass] = getSelectorSpecificity(cssClass);
	            if (cssClass == '@font-face' && !nodeEnv) {
	              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 = createCanvas();
	      cMask.width = x + width;
	      cMask.height = y + height;
	      var maskCtx = cMask.getContext('2d');
	      this.renderChildren(maskCtx);

	      var c = createCanvas();
	      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) {
	      var hasContext2D = (typeof CanvasRenderingContext2D !== 'undefined');
	      var oldBeginPath = ctx.beginPath;
	      var oldClosePath = ctx.closePath;
	      if (hasContext2D) {
	        CanvasRenderingContext2D.prototype.beginPath = function () { };
	        CanvasRenderingContext2D.prototype.closePath = function () { };
	      }

	      oldBeginPath.call(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.style('transform', false, true).hasValue()) {
	            transform = new svg.Transform(child.style('transform', false, true).value);
	            transform.apply(ctx);
	          }
	          child.path(ctx);
	          if (hasContext2D) {
	            CanvasRenderingContext2D.prototype.closePath = oldClosePath;
	          }
	          if (transform) { transform.unapply(ctx); }
	        }
	      }
	      oldClosePath.call(ctx);
	      ctx.clip();
	      if (hasContext2D) {
	        CanvasRenderingContext2D.prototype.beginPath = oldBeginPath;
	        CanvasRenderingContext2D.prototype.closePath = oldClosePath;
	      }
	    };

	    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 = createCanvas();
	      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++) {
	        if (typeof this.children[i].apply == 'function') {
	          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 (!stackblurCanvas || typeof stackblurCanvas.canvasRGBA === '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);
	      stackblurCanvas.canvasRGBA(ctx.canvas, 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 (windowEnv.scrollX) p.x += windowEnv.scrollX;
	      if (windowEnv.scrollY) p.y += windowEnv.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;
	    e.addStylesFromStyleDefinition();

	    // 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);
	      } else {
	        svg.ViewPort.SetCurrent(defaultClientWidth, defaultClientHeight);
	      }

	      if (svg.opts['ignoreDimensions'] != true) {
	        // set canvas size
	        if (e.style('width').hasValue()) {
	          ctx.canvas.width = e.style('width').toPixels('x');
	          if (ctx.canvas.style) { ctx.canvas.style.width = ctx.canvas.width + 'px'; }
	        }
	        if (e.style('height').hasValue()) {
	          ctx.canvas.height = e.style('height').toPixels('y');
	          if (ctx.canvas.style) { 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.style('transform', true, true).value += ' scale(' + (1.0 / xRatio) + ',' + (1.0 / yRatio) + ')';
	      }

	      // 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();
	    }
	    {
	      //In node, in the most cases, we don't need the animation listener.
	      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, opts) {
	    var cOpts = {
	      ignoreMouse: true,
	      ignoreAnimation: true,
	      ignoreDimensions: true,
	      ignoreClear: true,
	      offsetX: dx,
	      offsetY: dy,
	      scaleWidth: dw,
	      scaleHeight: dh
	    };

	    for (var prop in opts) {
	      if (opts.hasOwnProperty(prop)) {
	        cOpts[prop] = opts[prop];
	      }
	    }
	    canvg(this.canvas, s, cOpts);
	  };
	}

	module.exports = canvg;
	});

	return canvg_1;

})));