public/javascripts/canvg.js
/*
* canvg.js - Javascript SVG parser and renderer on Canvas
* MIT Licensed
* Gabe Lerner (gabelerner@gmail.com)
* http://code.google.com/p/canvg/
*
* Requires: rgbcolor.js - http://www.phpied.com/rgb-color-parser-in-javascript/
*/
(function(){
// canvg(target, s)
// empty parameters: replace all 'svg' elements on page with 'canvas' elements
// target: canvas element or the id of a canvas element
// s: svg string, url to svg file, or xml document
// opts: optional hash of options
// ignoreMouse: true => ignore mouse events
// ignoreAnimation: true => ignore animations
// ignoreDimensions: true => does not try to resize canvas
// ignoreClear: true => does not clear canvas
// offsetX: int => draws at a x offset
// offsetY: int => draws at a y offset
// scaleWidth: int => scales horizontally to width
// scaleHeight: int => scales vertically to height
// renderCallback: function => will call the function after the first render is completed
// forceRedraw: function => will call the function on every frame, if it returns true, will redraw
this.canvg = function (target, s, opts) {
// no parameters
if (target == null && s == null && opts == null) {
var svgTags = document.getElementsByTagName('svg');
for (var i=0; i<svgTags.length; i++) {
var svgTag = svgTags[i];
var c = document.createElement('canvas');
c.width = svgTag.clientWidth;
c.height = svgTag.clientHeight;
svgTag.parentNode.insertBefore(c, svgTag);
svgTag.parentNode.removeChild(svgTag);
var div = document.createElement('div');
div.appendChild(svgTag);
canvg(c, div.innerHTML);
}
return;
}
opts = opts || {};
if (typeof target == 'string') {
target = document.getElementById(target);
}
// store class on canvas
if (target.svg != null) target.svg.stop();
target.svg = svg = build();
svg.opts = opts;
var ctx = target.getContext('2d');
if (typeof(s.documentElement) != 'undefined') {
// load from xml doc
svg.loadXmlDoc(ctx, s);
}
else if (s.substr(0,1) == '<') {
// load from xml string
svg.loadXml(ctx, s);
}
else {
// load from url
svg.load(ctx, s);
}
}
function build() {
var svg = { };
svg.FRAMERATE = 30;
svg.MAX_VIRTUAL_PIXELS = 30000;
// globals
svg.init = function(ctx) {
svg.Definitions = {};
svg.Styles = {};
svg.Animations = [];
svg.Images = [];
svg.ctx = ctx;
svg.ViewPort = new (function () {
this.viewPorts = [];
this.Clear = function() { this.viewPorts = []; }
this.SetCurrent = function(width, height) { this.viewPorts.push({ width: width, height: height }); }
this.RemoveCurrent = function() { this.viewPorts.pop(); }
this.Current = function() { return this.viewPorts[this.viewPorts.length - 1]; }
this.width = function() { return this.Current().width; }
this.height = function() { return this.Current().height; }
this.ComputeSize = function(d) {
if (d != null && typeof(d) == 'number') return d;
if (d == 'x') return this.width();
if (d == 'y') return this.height();
return Math.sqrt(Math.pow(this.width(), 2) + Math.pow(this.height(), 2)) / Math.sqrt(2);
}
});
}
svg.init();
// images loaded
svg.ImagesLoaded = function() {
for (var i=0; i<svg.Images.length; i++) {
if (!svg.Images[i].loaded) return false;
}
return true;
}
// trim
svg.trim = function(s) { return s.replace(/^\s+|\s+$/g, ''); }
// compress spaces
svg.compressSpaces = function(s) { return s.replace(/[\s\r\t\n]+/gm,' '); }
// ajax
svg.ajax = function(url) {
var AJAX;
if(window.XMLHttpRequest){AJAX=new XMLHttpRequest();}
else{AJAX=new ActiveXObject('Microsoft.XMLHTTP');}
if(AJAX){
AJAX.open('GET',url,false);
AJAX.send(null);
return AJAX.responseText;
}
return null;
}
// parse xml
svg.parseXml = function(xml) {
if (window.DOMParser)
{
var parser = new DOMParser();
return parser.parseFromString(xml, 'text/xml');
}
else
{
xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
var xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
xmlDoc.async = 'false';
xmlDoc.loadXML(xml);
return xmlDoc;
}
}
svg.Property = function(name, value) {
this.name = name;
this.value = value;
}
svg.Property.prototype.getValue = function() {
return this.value;
}
svg.Property.prototype.hasValue = function() {
return (this.value != null && this.value !== '');
}
// return the numerical value of the property
svg.Property.prototype.numValue = function() {
if (!this.hasValue()) return 0;
var n = parseFloat(this.value);
if ((this.value + '').match(/%$/)) {
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(opacity) {
var newValue = this.value;
if (opacity != null && opacity != '' && 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 + ', ' + opacity + ')';
}
}
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.replace(/^(url\()?#([^\)]+)\)?$/, '$2');
return svg.Definitions[name];
}
svg.Property.prototype.isUrlDefinition = function() {
return this.value.indexOf('url(') == 0
}
svg.Property.prototype.getFillStyleDefinition = function(e) {
var def = this.getDefinition();
// gradient
if (def != null && def.createGradient) {
return def.createGradient(svg.ctx, e);
}
// pattern
if (def != null && def.createPattern) {
return def.createPattern(svg.ctx, e);
}
return null;
}
// length extensions
svg.Property.prototype.getDPI = function(viewPort) {
return 96.0; // TODO: compute?
}
svg.Property.prototype.getEM = function(viewPort) {
var em = 12;
var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);
return em;
}
svg.Property.prototype.getUnits = function() {
var s = this.value+'';
return s.replace(/[0-9\.\-]/g,'');
}
// get the length as pixels
svg.Property.prototype.toPixels = function(viewPort) {
if (!this.hasValue()) return 0;
var s = this.value+'';
if (s.match(/em$/)) 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);
return this.numValue();
}
// 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);
}
// fonts
svg.Font = new (function() {
this.Styles = 'normal|italic|oblique|inherit';
this.Variants = 'normal|small-caps|inherit';
this.Weights = 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit';
this.CreateFont = function(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
var f = inherit != null ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
return {
fontFamily: fontFamily || f.fontFamily,
fontSize: fontSize || f.fontSize,
fontStyle: fontStyle || f.fontStyle,
fontWeight: fontWeight || f.fontWeight,
fontVariant: fontVariant || f.fontVariant,
toString: function () { return [this.fontStyle, this.fontVariant, this.fontWeight, this.fontSize, this.fontFamily].join(' ') }
}
}
var that = this;
this.Parse = function(s) {
var f = {};
var d = svg.trim(svg.compressSpaces(s || '')).split(' ');
var set = { fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false }
var ff = '';
for (var i=0; i<d.length; i++) {
if (!set.fontStyle && that.Styles.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontStyle = d[i]; set.fontStyle = true; }
else if (!set.fontVariant && that.Variants.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontVariant = d[i]; set.fontStyle = set.fontVariant = true; }
else if (!set.fontWeight && that.Weights.indexOf(d[i]) != -1) { if (d[i] != 'inherit') f.fontWeight = d[i]; set.fontStyle = set.fontVariant = set.fontWeight = true; }
else if (!set.fontSize) { if (d[i] != 'inherit') f.fontSize = d[i].split('/')[0]; set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true; }
else { if (d[i] != 'inherit') ff += d[i]; }
} if (ff != '') f.fontFamily = ff;
return f;
}
});
// points and paths
svg.ToNumberArray = function(s) {
var a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
for (var i=0; i<a.length; i++) {
a[i] = parseFloat(a[i]);
}
return a;
}
svg.Point = function(x, y) {
this.x = x;
this.y = y;
}
svg.Point.prototype.angleTo = function(p) {
return Math.atan2(p.y - this.y, p.x - this.x);
}
svg.Point.prototype.applyTransform = function(v) {
var xp = this.x * v[0] + this.y * v[2] + v[4];
var yp = this.x * v[1] + this.y * v[3] + v[5];
this.x = xp;
this.y = yp;
}
svg.CreatePoint = function(s) {
var a = svg.ToNumberArray(s);
return new svg.Point(a[0], a[1]);
}
svg.CreatePath = function(s) {
var a = svg.ToNumberArray(s);
var path = [];
for (var i=0; i<a.length; i+=2) {
path.push(new svg.Point(a[i], a[i+1]));
}
return path;
}
// bounding box
svg.BoundingBox = function(x1, y1, x2, y2) { // pass in initial points if you want
this.x1 = Number.NaN;
this.y1 = Number.NaN;
this.x2 = Number.NaN;
this.y2 = Number.NaN;
this.x = function() { return this.x1; }
this.y = function() { return this.y1; }
this.width = function() { return this.x2 - this.x1; }
this.height = function() { return this.y2 - this.y1; }
this.addPoint = function(x, y) {
if (x != null) {
if (isNaN(this.x1) || isNaN(this.x2)) {
this.x1 = x;
this.x2 = x;
}
if (x < this.x1) this.x1 = x;
if (x > this.x2) this.x2 = x;
}
if (y != null) {
if (isNaN(this.y1) || isNaN(this.y2)) {
this.y1 = y;
this.y2 = y;
}
if (y < this.y1) this.y1 = y;
if (y > this.y2) this.y2 = y;
}
}
this.addX = function(x) { this.addPoint(x, null); }
this.addY = function(y) { this.addPoint(null, y); }
this.addBoundingBox = function(bb) {
this.addPoint(bb.x1, bb.y1);
this.addPoint(bb.x2, bb.y2);
}
this.addQuadraticCurve = function(p0x, p0y, p1x, p1y, p2x, p2y) {
var cp1x = p0x + 2/3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
var cp1y = p0y + 2/3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
var cp2x = cp1x + 1/3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
var cp2y = cp1y + 1/3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
}
this.addBezierCurve = function(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
var p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
this.addPoint(p0[0], p0[1]);
this.addPoint(p3[0], p3[1]);
for (i=0; i<=1; i++) {
var f = function(t) {
return Math.pow(1-t, 3) * p0[i]
+ 3 * Math.pow(1-t, 2) * t * p1[i]
+ 3 * (1-t) * Math.pow(t, 2) * p2[i]
+ Math.pow(t, 3) * p3[i];
}
var b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
var a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
var c = 3 * p1[i] - 3 * p0[i];
if (a == 0) {
if (b == 0) continue;
var t = -c / b;
if (0 < t && t < 1) {
if (i == 0) this.addX(f(t));
if (i == 1) this.addY(f(t));
}
continue;
}
var b2ac = Math.pow(b, 2) - 4 * c * a;
if (b2ac < 0) continue;
var t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
if (0 < t1 && t1 < 1) {
if (i == 0) this.addX(f(t1));
if (i == 1) this.addY(f(t1));
}
var t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
if (0 < t2 && t2 < 1) {
if (i == 0) this.addX(f(t2));
if (i == 1) this.addY(f(t2));
}
}
}
this.isPointInBox = function(x, y) {
return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
}
this.addPoint(x1, y1);
this.addPoint(x2, y2);
}
// transforms
svg.Transform = function(v) {
var that = this;
this.Type = {}
// translate
this.Type.translate = function(s) {
this.p = svg.CreatePoint(s);
this.apply = function(ctx) {
ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
}
this.applyToPoint = function(p) {
p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
}
}
// rotate
this.Type.rotate = function(s) {
var a = svg.ToNumberArray(s);
this.angle = new svg.Property('angle', a[0]);
this.cx = a[1] || 0;
this.cy = a[2] || 0;
this.apply = function(ctx) {
ctx.translate(this.cx, this.cy);
ctx.rotate(this.angle.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.applyToPoint = function(p) {
p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
}
}
this.Type.matrix = function(s) {
this.m = svg.ToNumberArray(s);
this.apply = function(ctx) {
ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
}
this.applyToPoint = function(p) {
p.applyTransform(this.m);
}
}
this.Type.SkewBase = function(s) {
this.base = that.Type.matrix;
this.base(s);
this.angle = new svg.Property('angle', s);
}
this.Type.SkewBase.prototype = new this.Type.matrix;
this.Type.skewX = function(s) {
this.base = that.Type.SkewBase;
this.base(s);
this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
}
this.Type.skewX.prototype = new this.Type.SkewBase;
this.Type.skewY = function(s) {
this.base = that.Type.SkewBase;
this.base(s);
this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
}
this.Type.skewY.prototype = new this.Type.SkewBase;
this.transforms = [];
this.apply = function(ctx) {
for (var i=0; i<this.transforms.length; i++) {
this.transforms[i].apply(ctx);
}
}
this.applyToPoint = function(p) {
for (var i=0; i<this.transforms.length; i++) {
this.transforms[i].applyToPoint(p);
}
}
var data = svg.trim(svg.compressSpaces(v)).split(/\s(?=[a-z])/);
for (var i=0; i<data.length; i++) {
var type = data[i].split('(')[0];
var s = data[i].split('(')[1].replace(')','');
var transform = new this.Type[type](s);
this.transforms.push(transform);
}
}
// aspect ratio
svg.AspectRatio = function(ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
aspectRatio = svg.compressSpaces(aspectRatio);
aspectRatio = aspectRatio.replace(/^defer\s/,''); // ignore defer
var align = aspectRatio.split(' ')[0] || 'xMidYMid';
var meetOrSlice = aspectRatio.split(' ')[1] || 'meet';
// calculate scale
var scaleX = width / desiredWidth;
var scaleY = height / desiredHeight;
var scaleMin = Math.min(scaleX, scaleY);
var scaleMax = Math.max(scaleX, scaleY);
if (meetOrSlice == 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
if (meetOrSlice == 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }
refX = new svg.Property('refX', refX);
refY = new svg.Property('refY', refY);
if (refX.hasValue() && refY.hasValue()) {
ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
}
else {
// align
if (align.match(/^xMid/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
if (align.match(/YMid$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
if (align.match(/^xMax/) && ((meetOrSlice == 'meet' && scaleMin == scaleY) || (meetOrSlice == 'slice' && scaleMax == scaleY))) ctx.translate(width - desiredWidth, 0);
if (align.match(/YMax$/) && ((meetOrSlice == 'meet' && scaleMin == scaleX) || (meetOrSlice == 'slice' && scaleMax == scaleX))) ctx.translate(0, height - desiredHeight);
}
// scale
if (align == 'none') ctx.scale(scaleX, scaleY);
else if (meetOrSlice == 'meet') ctx.scale(scaleMin, scaleMin);
else if (meetOrSlice == 'slice') ctx.scale(scaleMax, scaleMax);
// translate
ctx.translate(minX == null ? 0 : -minX, minY == null ? 0 : -minY);
}
// elements
svg.Element = {}
svg.EmptyProperty = new svg.Property('EMPTY', '');
svg.Element.ElementBase = function(node) {
this.attributes = {};
this.styles = {};
this.children = [];
// get or create attribute
this.attribute = function(name, createIfNotExists) {
var a = this.attributes[name];
if (a != null) return a;
if (createIfNotExists == true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
return a || svg.EmptyProperty;
}
// get or create style, crawls up node tree
this.style = function(name, createIfNotExists) {
var s = this.styles[name];
if (s != null) return s;
var a = this.attribute(name);
if (a != null && a.hasValue()) {
this.styles[name] = a; // move up to me to cache
return a;
}
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.attribute('visibility').value == 'hidden') return;
ctx.save();
this.setContext(ctx);
// mask
if (this.attribute('mask').hasValue()) {
var mask = this.attribute('mask').getDefinition();
if (mask != null) mask.apply(ctx, this);
}
else if (this.style('filter').hasValue()) {
var filter = this.style('filter').getDefinition();
if (filter != null) filter.apply(ctx, this);
}
else this.renderChildren(ctx);
this.clearContext(ctx);
ctx.restore();
}
// base set context
this.setContext = function(ctx) {
// OVERRIDE ME!
}
// base clear context
this.clearContext = function(ctx) {
// OVERRIDE ME!
}
// base render children
this.renderChildren = function(ctx) {
for (var i=0; i<this.children.length; i++) {
this.children[i].render(ctx);
}
}
this.addChild = function(childNode, create) {
var child = childNode;
if (create) child = svg.CreateElement(childNode);
child.parent = this;
this.children.push(child);
}
if (node != null && node.nodeType == 1) { //ELEMENT_NODE
// add children
for (var i=0; i<node.childNodes.length; i++) {
var childNode = node.childNodes[i];
if (childNode.nodeType == 1) this.addChild(childNode, true); //ELEMENT_NODE
}
// add attributes
for (var i=0; i<node.attributes.length; i++) {
var attribute = node.attributes[i];
this.attributes[attribute.nodeName] = new svg.Property(attribute.nodeName, attribute.nodeValue);
}
// add tag styles
var styles = svg.Styles[node.nodeName];
if (styles != null) {
for (var name in styles) {
this.styles[name] = styles[name];
}
}
// add class styles
if (this.attribute('class').hasValue()) {
var classes = svg.compressSpaces(this.attribute('class').value).split(' ');
for (var j=0; j<classes.length; j++) {
styles = svg.Styles['.'+classes[j]];
if (styles != null) {
for (var name in styles) {
this.styles[name] = styles[name];
}
}
styles = svg.Styles[node.nodeName+'.'+classes[j]];
if (styles != null) {
for (var name in styles) {
this.styles[name] = styles[name];
}
}
}
}
// add id styles
if (this.attribute('id').hasValue()) {
var styles = svg.Styles['#' + this.attribute('id').value];
if (styles != null) {
for (var name in styles) {
this.styles[name] = styles[name];
}
}
}
// add inline styles
if (this.attribute('style').hasValue()) {
var styles = this.attribute('style').value.split(';');
for (var i=0; i<styles.length; i++) {
if (svg.trim(styles[i]) != '') {
var style = styles[i].split(':');
var name = svg.trim(style[0]);
var value = svg.trim(style[1]);
this.styles[name] = new svg.Property(name, value);
}
}
}
// add id
if (this.attribute('id').hasValue()) {
if (svg.Definitions[this.attribute('id').value] == null) {
svg.Definitions[this.attribute('id').value] = this;
}
}
}
}
svg.Element.RenderedElementBase = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.setContext = function(ctx) {
// fill
if (this.style('fill').isUrlDefinition()) {
var fs = this.style('fill').getFillStyleDefinition(this);
if (fs != null) ctx.fillStyle = fs;
}
else if (this.style('fill').hasValue()) {
var fillStyle = this.style('fill');
if (fillStyle.value == 'currentColor') fillStyle.value = this.style('color').value;
ctx.fillStyle = (fillStyle.value == 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
}
if (this.style('fill-opacity').hasValue()) {
var fillStyle = new svg.Property('fill', ctx.fillStyle);
fillStyle = fillStyle.addOpacity(this.style('fill-opacity').value);
ctx.fillStyle = fillStyle.value;
}
// stroke
if (this.style('stroke').isUrlDefinition()) {
var fs = this.style('stroke').getFillStyleDefinition(this);
if (fs != null) ctx.strokeStyle = fs;
}
else if (this.style('stroke').hasValue()) {
var strokeStyle = this.style('stroke');
if (strokeStyle.value == 'currentColor') strokeStyle.value = this.style('color').value;
ctx.strokeStyle = (strokeStyle.value == 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
}
if (this.style('stroke-opacity').hasValue()) {
var strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity').value);
ctx.strokeStyle = strokeStyle.value;
}
if (this.style('stroke-width').hasValue()) ctx.lineWidth = this.style('stroke-width').toPixels();
if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
// font
if (typeof(ctx.font) != 'undefined') {
ctx.font = svg.Font.CreateFont(
this.style('font-style').value,
this.style('font-variant').value,
this.style('font-weight').value,
this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
this.style('font-family').value).toString();
}
// transform
if (this.attribute('transform').hasValue()) {
var transform = new svg.Transform(this.attribute('transform').value);
transform.apply(ctx);
}
// clip
if (this.attribute('clip-path').hasValue()) {
var clip = this.attribute('clip-path').getDefinition();
if (clip != null) clip.apply(ctx);
}
// opacity
if (this.style('opacity').hasValue()) {
ctx.globalAlpha = this.style('opacity').numValue();
}
}
}
svg.Element.RenderedElementBase.prototype = new svg.Element.ElementBase;
svg.Element.PathElementBase = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
this.path = function(ctx) {
if (ctx != null) ctx.beginPath();
return new svg.BoundingBox();
}
this.renderChildren = function(ctx) {
this.path(ctx);
svg.Mouse.checkPath(this, ctx);
if (ctx.fillStyle != '') ctx.fill();
if (ctx.strokeStyle != '') ctx.stroke();
var markers = this.getMarkers();
if (markers != null) {
if (this.style('marker-start').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
ctx.strokeStyle = 'rgba(0,0,0,0)';
ctx.lineCap = 'butt';
ctx.lineJoin = 'miter';
ctx.miterLimit = 4;
this.baseSetContext(ctx);
// create new view port
if (!this.attribute('x').hasValue()) this.attribute('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');
}
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;
if (ctx != null) {
ctx.beginPath();
ctx.moveTo(x + rx, y);
ctx.lineTo(x + width - rx, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
ctx.lineTo(x + width, y + height - ry);
ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
ctx.lineTo(x + rx, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
ctx.lineTo(x, y + ry);
ctx.quadraticCurveTo(x, y, x + rx, y)
ctx.closePath();
}
return new svg.BoundingBox(x, y, x + width, y + height);
}
}
svg.Element.rect.prototype = new svg.Element.PathElementBase;
// circle element
svg.Element.circle = function(node) {
this.base = svg.Element.PathElementBase;
this.base(node);
this.path = function(ctx) {
var cx = this.attribute('cx').toPixels('x');
var cy = this.attribute('cy').toPixels('y');
var r = this.attribute('r').toPixels();
if (ctx != null) {
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
ctx.closePath();
}
return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
}
}
svg.Element.circle.prototype = new svg.Element.PathElementBase;
// ellipse element
svg.Element.ellipse = function(node) {
this.base = svg.Element.PathElementBase;
this.base(node);
this.path = function(ctx) {
var KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
var rx = this.attribute('rx').toPixels('x');
var ry = this.attribute('ry').toPixels('y');
var cx = this.attribute('cx').toPixels('x');
var cy = this.attribute('cy').toPixels('y');
if (ctx != null) {
ctx.beginPath();
ctx.moveTo(cx, cy - ry);
ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
ctx.closePath();
}
return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
}
}
svg.Element.ellipse.prototype = new svg.Element.PathElementBase;
// line element
svg.Element.line = function(node) {
this.base = svg.Element.PathElementBase;
this.base(node);
this.getPoints = function() {
return [
new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))];
}
this.path = function(ctx) {
var points = this.getPoints();
if (ctx != null) {
ctx.beginPath();
ctx.moveTo(points[0].x, points[0].y);
ctx.lineTo(points[1].x, points[1].y);
}
return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
}
this.getMarkers = function() {
var points = this.getPoints();
var a = points[0].angleTo(points[1]);
return [[points[0], a], [points[1], a]];
}
}
svg.Element.line.prototype = new svg.Element.PathElementBase;
// polyline element
svg.Element.polyline = function(node) {
this.base = svg.Element.PathElementBase;
this.base(node);
this.points = svg.CreatePath(this.attribute('points').value);
this.path = function(ctx) {
var bb = new svg.BoundingBox(this.points[0].x, this.points[0].y);
if (ctx != null) {
ctx.beginPath();
ctx.moveTo(this.points[0].x, this.points[0].y);
}
for (var i=1; i<this.points.length; i++) {
bb.addPoint(this.points[i].x, this.points[i].y);
if (ctx != null) ctx.lineTo(this.points[i].x, this.points[i].y);
}
return bb;
}
this.getMarkers = function() {
var markers = [];
for (var i=0; i<this.points.length - 1; i++) {
markers.push([this.points[i], this.points[i].angleTo(this.points[i+1])]);
}
markers.push([this.points[this.points.length-1], markers[markers.length-1][1]]);
return markers;
}
}
svg.Element.polyline.prototype = new svg.Element.PathElementBase;
// polygon element
svg.Element.polygon = function(node) {
this.base = svg.Element.polyline;
this.base(node);
this.basePath = this.path;
this.path = function(ctx) {
var bb = this.basePath(ctx);
if (ctx != null) {
ctx.lineTo(this.points[0].x, this.points[0].y);
ctx.closePath();
}
return bb;
}
}
svg.Element.polygon.prototype = new svg.Element.polyline;
// path element
svg.Element.path = function(node) {
this.base = svg.Element.PathElementBase;
this.base(node);
var d = this.attribute('d').value;
// TODO: convert to real lexer based on http://www.w3.org/TR/SVG11/paths.html#PathDataBNF
d = d.replace(/,/gm,' '); // get rid of all commas
d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from commands
d = d.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm,'$1 $2'); // separate commands from points
d = d.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm,'$1 $2'); // separate commands from points
d = d.replace(/([0-9])([+\-])/gm,'$1 $2'); // separate digits when no comma
d = d.replace(/(\.[0-9]*)(\.)/gm,'$1 $2'); // separate digits when no comma
d = d.replace(/([Aa](\s+[0-9]+){3})\s+([01])\s*([01])/gm,'$1 $3 $4 '); // shorthand elliptical arc path syntax
d = svg.compressSpaces(d); // compress multiple spaces
d = svg.trim(d);
this.PathParser = new (function(d) {
this.tokens = d.split(' ');
this.reset = function() {
this.i = -1;
this.command = '';
this.previousCommand = '';
this.start = new svg.Point(0, 0);
this.control = new svg.Point(0, 0);
this.current = new svg.Point(0, 0);
this.points = [];
this.angles = [];
}
this.isEnd = function() {
return this.i >= this.tokens.length - 1;
}
this.isCommandOrEnd = function() {
if (this.isEnd()) return true;
return this.tokens[this.i + 1].match(/^[A-Za-z]$/) != null;
}
this.isRelativeCommand = function() {
switch(this.command)
{
case 'm':
case 'l':
case 'h':
case 'v':
case 'c':
case 's':
case 'q':
case 't':
case 'a':
case 'z':
return true;
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') {
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;
if (sweepFlag == 0 && ad > 0) ad = ad - 2 * Math.PI;
if (sweepFlag == 1 && ad < 0) ad = ad + 2 * Math.PI;
// for markers
var halfWay = new svg.Point(
centp.x + rx * Math.cos((a1 + (a1 + ad)) / 2),
centp.y + ry * Math.sin((a1 + (a1 + ad)) / 2)
);
pp.addMarkerAngle(halfWay, (a1 + (a1 + ad)) / 2 + (sweepFlag == 0 ? -1 : 1) * Math.PI / 2);
pp.addMarkerAngle(cp, (a1 + ad) + (sweepFlag == 0 ? -1 : 1) * Math.PI / 2);
bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
if (ctx != null) {
var r = rx > ry ? rx : ry;
var sx = rx > ry ? 1 : rx / ry;
var sy = rx > ry ? ry / rx : 1;
ctx.translate(centp.x, centp.y);
ctx.rotate(xAxisRotation);
ctx.scale(sx, sy);
ctx.arc(0, 0, r, a1, a1 + ad, 1 - sweepFlag);
ctx.scale(1/sx, 1/sy);
ctx.rotate(-xAxisRotation);
ctx.translate(-centp.x, -centp.y);
}
}
break;
case 'Z':
case 'z':
if (ctx != null) ctx.closePath();
pp.current = pp.start;
}
}
return bb;
}
this.getMarkers = function() {
var points = this.PathParser.getMarkerPoints();
var angles = this.PathParser.getMarkerAngles();
var markers = [];
for (var i=0; i<points.length; i++) {
markers.push([points[i], angles[i]]);
}
return markers;
}
}
svg.Element.path.prototype = new svg.Element.PathElementBase;
// pattern element
svg.Element.pattern = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.createPattern = function(ctx, element) {
// render me using a temporary svg element
var tempSvg = new svg.Element.svg();
tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
tempSvg.attributes['x'] = new svg.Property('x', this.attribute('x').value);
tempSvg.attributes['y'] = new svg.Property('y', this.attribute('y').value);
tempSvg.attributes['width'] = new svg.Property('width', this.attribute('width').value);
tempSvg.attributes['height'] = new svg.Property('height', this.attribute('height').value);
tempSvg.children = this.children;
var c = document.createElement('canvas');
document.body.appendChild(c);
c.width = this.attribute('width').toPixels('x') + this.attribute('x').toPixels('x');
c.height = this.attribute('height').toPixels('y') + this.attribute('y').toPixels('y');
tempSvg.render(c.getContext('2d'));
return ctx.createPattern(c, 'repeat');
}
}
svg.Element.pattern.prototype = new svg.Element.ElementBase;
// marker element
svg.Element.marker = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.baseRender = this.render;
this.render = function(ctx, point, angle) {
ctx.translate(point.x, point.y);
if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(angle);
if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
ctx.save();
// render me using a temporary svg element
var tempSvg = new svg.Element.svg();
tempSvg.attributes['viewBox'] = new svg.Property('viewBox', this.attribute('viewBox').value);
tempSvg.attributes['refX'] = new svg.Property('refX', this.attribute('refX').value);
tempSvg.attributes['refY'] = new svg.Property('refY', this.attribute('refY').value);
tempSvg.attributes['width'] = new svg.Property('width', this.attribute('markerWidth').value);
tempSvg.attributes['height'] = new svg.Property('height', this.attribute('markerHeight').value);
tempSvg.attributes['fill'] = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
tempSvg.attributes['stroke'] = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
tempSvg.children = this.children;
tempSvg.render(ctx);
ctx.restore();
if (this.attribute('markerUnits').valueOrDefault('strokeWidth') == 'strokeWidth') ctx.scale(1/ctx.lineWidth, 1/ctx.lineWidth);
if (this.attribute('orient').valueOrDefault('auto') == 'auto') ctx.rotate(-angle);
ctx.translate(-point.x, -point.y);
}
}
svg.Element.marker.prototype = new svg.Element.ElementBase;
// definitions element
svg.Element.defs = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.render = function(ctx) {
// NOOP
}
}
svg.Element.defs.prototype = new svg.Element.ElementBase;
// base for gradients
svg.Element.GradientBase = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
this.stops = [];
for (var i=0; i<this.children.length; i++) {
var child = this.children[i];
this.stops.push(child);
}
this.getGradient = function() {
// OVERRIDE ME!
}
this.createGradient = function(ctx, element) {
var stopsContainer = this;
if (this.attribute('xlink:href').hasValue()) {
stopsContainer = this.attribute('xlink:href').getDefinition();
}
var g = this.getGradient(ctx, element);
if (g == null) return stopsContainer.stops[stopsContainer.stops.length - 1].color;
for (var i=0; i<stopsContainer.stops.length; i++) {
g.addColorStop(stopsContainer.stops[i].offset, stopsContainer.stops[i].color);
}
if (this.attribute('gradientTransform').hasValue()) {
// render as transformed pattern on temporary canvas
var rootView = svg.ViewPort.viewPorts[0];
var rect = new svg.Element.rect();
rect.attributes['x'] = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS/3.0);
rect.attributes['y'] = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS/3.0);
rect.attributes['width'] = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
rect.attributes['height'] = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
var group = new svg.Element.g();
group.attributes['transform'] = new svg.Property('transform', this.attribute('gradientTransform').value);
group.children = [ rect ];
var tempSvg = new svg.Element.svg();
tempSvg.attributes['x'] = new svg.Property('x', 0);
tempSvg.attributes['y'] = new svg.Property('y', 0);
tempSvg.attributes['width'] = new svg.Property('width', rootView.width);
tempSvg.attributes['height'] = new svg.Property('height', rootView.height);
tempSvg.children = [ group ];
var c = document.createElement('canvas');
c.width = rootView.width;
c.height = rootView.height;
var tempCtx = c.getContext('2d');
tempCtx.fillStyle = g;
tempSvg.render(tempCtx);
return tempCtx.createPattern(c, 'no-repeat');
}
return g;
}
}
svg.Element.GradientBase.prototype = new svg.Element.ElementBase;
// linear gradient element
svg.Element.linearGradient = function(node) {
this.base = svg.Element.GradientBase;
this.base(node);
this.getGradient = function(ctx, element) {
var bb = element.getBoundingBox();
var x1 = (this.gradientUnits == 'objectBoundingBox'
? bb.x() + bb.width() * this.attribute('x1').numValue()
: this.attribute('x1').toPixels('x'));
var y1 = (this.gradientUnits == 'objectBoundingBox'
? bb.y() + bb.height() * this.attribute('y1').numValue()
: this.attribute('y1').toPixels('y'));
var x2 = (this.gradientUnits == 'objectBoundingBox'
? bb.x() + bb.width() * this.attribute('x2').numValue()
: this.attribute('x2').toPixels('x'));
var y2 = (this.gradientUnits == 'objectBoundingBox'
? bb.y() + bb.height() * this.attribute('y2').numValue()
: this.attribute('y2').toPixels('y'));
if (x1 == x2 && y1 == y2) return null;
return ctx.createLinearGradient(x1, y1, x2, y2);
}
}
svg.Element.linearGradient.prototype = new svg.Element.GradientBase;
// radial gradient element
svg.Element.radialGradient = function(node) {
this.base = svg.Element.GradientBase;
this.base(node);
this.getGradient = function(ctx, element) {
var bb = element.getBoundingBox();
if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';
var cx = (this.gradientUnits == 'objectBoundingBox'
? bb.x() + bb.width() * this.attribute('cx').numValue()
: this.attribute('cx').toPixels('x'));
var cy = (this.gradientUnits == 'objectBoundingBox'
? bb.y() + bb.height() * this.attribute('cy').numValue()
: this.attribute('cy').toPixels('y'));
var fx = cx;
var fy = cy;
if (this.attribute('fx').hasValue()) {
fx = (this.gradientUnits == 'objectBoundingBox'
? bb.x() + bb.width() * this.attribute('fx').numValue()
: this.attribute('fx').toPixels('x'));
}
if (this.attribute('fy').hasValue()) {
fy = (this.gradientUnits == 'objectBoundingBox'
? bb.y() + bb.height() * this.attribute('fy').numValue()
: this.attribute('fy').toPixels('y'));
}
var r = (this.gradientUnits == 'objectBoundingBox'
? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
: this.attribute('r').toPixels());
return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
}
}
svg.Element.radialGradient.prototype = new svg.Element.GradientBase;
// gradient stop element
svg.Element.stop = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.offset = this.attribute('offset').numValue();
var stopColor = this.style('stop-color');
if (this.style('stop-opacity').hasValue()) stopColor = stopColor.addOpacity(this.style('stop-opacity').value);
this.color = stopColor.value;
}
svg.Element.stop.prototype = new svg.Element.ElementBase;
// animation base element
svg.Element.AnimateBase = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
svg.Animations.push(this);
this.duration = 0.0;
this.begin = this.attribute('begin').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.duration = 0.0
}
else if (this.attribute('fill').valueOrDefault('remove') == 'remove' && !this.removed) {
this.removed = true;
this.getProperty().value = this.initialValue;
return true;
}
else {
return false; // no updates made
}
}
this.duration = this.duration + delta;
// if we're past the begin time
var updated = false;
if (this.begin < this.duration) {
var newValue = this.calcValue(); // tween
if (this.attribute('type').hasValue()) {
// for transform, etc.
var type = this.attribute('type').value;
newValue = type + '(' + newValue + ')';
}
this.getProperty().value = newValue;
updated = true;
}
return updated;
}
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.animate;
this.base(node);
}
svg.Element.animateTransform.prototype = new svg.Element.animate;
// font element
svg.Element.font = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.horizAdvX = this.attribute('horiz-adv-x').numValue();
this.isRTL = false;
this.isArabic = false;
this.fontFace = null;
this.missingGlyph = null;
this.glyphs = [];
for (var i=0; i<this.children.length; i++) {
var child = this.children[i];
if (child.type == 'font-face') {
this.fontFace = child;
if (child.style('font-family').hasValue()) {
svg.Definitions[child.style('font-family').value] = this;
}
}
else if (child.type == 'missing-glyph') this.missingGlyph = child;
else if (child.type == 'glyph') {
if (child.arabicForm != '') {
this.isRTL = true;
this.isArabic = true;
if (typeof(this.glyphs[child.unicode]) == 'undefined') this.glyphs[child.unicode] = [];
this.glyphs[child.unicode][child.arabicForm] = child;
}
else {
this.glyphs[child.unicode] = child;
}
}
}
}
svg.Element.font.prototype = new svg.Element.ElementBase;
// font-face element
svg.Element.fontface = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.ascent = this.attribute('ascent').value;
this.descent = this.attribute('descent').value;
this.unitsPerEm = this.attribute('units-per-em').numValue();
}
svg.Element.fontface.prototype = new svg.Element.ElementBase;
// missing-glyph element
svg.Element.missingglyph = function(node) {
this.base = svg.Element.path;
this.base(node);
this.horizAdvX = 0;
}
svg.Element.missingglyph.prototype = new svg.Element.path;
// glyph element
svg.Element.glyph = function(node) {
this.base = svg.Element.path;
this.base(node);
this.horizAdvX = this.attribute('horiz-adv-x').numValue();
this.unicode = this.attribute('unicode').value;
this.arabicForm = this.attribute('arabic-form').value;
}
svg.Element.glyph.prototype = new svg.Element.path;
// text element
svg.Element.text = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
if (node != null) {
// add children
this.children = [];
for (var i=0; i<node.childNodes.length; i++) {
var childNode = node.childNodes[i];
if (childNode.nodeType == 1) { // capture tspan and tref nodes
this.addChild(childNode, true);
}
else if (childNode.nodeType == 3) { // capture text
this.addChild(new svg.Element.tspan(childNode), false);
}
}
}
this.baseSetContext = this.setContext;
this.setContext = function(ctx) {
this.baseSetContext(ctx);
if (this.style('dominant-baseline').hasValue()) ctx.textBaseline = this.style('dominant-baseline').value;
if (this.style('alignment-baseline').hasValue()) ctx.textBaseline = this.style('alignment-baseline').value;
}
this.renderChildren = function(ctx) {
var textAnchor = this.style('text-anchor').valueOrDefault('start');
var x = this.attribute('x').toPixels('x');
var y = this.attribute('y').toPixels('y');
for (var i=0; i<this.children.length; i++) {
var child = this.children[i];
if (child.attribute('x').hasValue()) {
child.x = child.attribute('x').toPixels('x');
}
else {
if (this.attribute('dx').hasValue()) y += this.attribute('dx').toPixels('x');
if (child.attribute('dx').hasValue()) x += child.attribute('dx').toPixels('x');
child.x = x;
}
var childLength = child.measureText(ctx);
if (textAnchor != 'start' && (i==0 || child.attribute('x').hasValue())) { // new group?
// loop through rest of children
var groupLength = childLength;
for (var j=i+1; j<this.children.length; j++) {
var childInGroup = this.children[j];
if (childInGroup.attribute('x').hasValue()) break; // new group
groupLength += childInGroup.measureText(ctx);
}
child.x -= (textAnchor == 'end' ? groupLength : groupLength / 2.0);
}
x = child.x + childLength;
if (child.attribute('y').hasValue()) {
child.y = child.attribute('y').toPixels('y');
}
else {
if (this.attribute('dy').hasValue()) y += this.attribute('dy').toPixels('y');
if (child.attribute('dy').hasValue()) y += child.attribute('dy').toPixels('y');
child.y = y;
}
y = child.y;
child.render(ctx);
}
}
}
svg.Element.text.prototype = new svg.Element.RenderedElementBase;
// text base
svg.Element.TextElementBase = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
this.getGlyph = function(font, text, i) {
var c = text[i];
var glyph = null;
if (font.isArabic) {
var arabicForm = 'isolated';
if ((i==0 || text[i-1]==' ') && i<text.length-2 && text[i+1]!=' ') arabicForm = 'terminal';
if (i>0 && text[i-1]!=' ' && i<text.length-2 && text[i+1]!=' ') arabicForm = 'medial';
if (i>0 && text[i-1]!=' ' && (i == text.length-1 || text[i+1]==' ')) arabicForm = 'initial';
if (typeof(font.glyphs[c]) != 'undefined') {
glyph = font.glyphs[c][arabicForm];
if (glyph == null && font.glyphs[c].type == 'glyph') glyph = font.glyphs[c];
}
}
else {
glyph = font.glyphs[c];
}
if (glyph == null) glyph = font.missingGlyph;
return glyph;
}
this.renderChildren = function(ctx) {
var customFont = this.parent.style('font-family').getDefinition();
if (customFont != null) {
var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
var fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
var text = this.getText();
if (customFont.isRTL) text = text.split("").reverse().join("");
var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
for (var i=0; i<text.length; i++) {
var glyph = this.getGlyph(customFont, text, i);
var scale = fontSize / customFont.fontFace.unitsPerEm;
ctx.translate(this.x, this.y);
ctx.scale(scale, -scale);
var lw = ctx.lineWidth;
ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
if (fontStyle == 'italic') ctx.transform(1, 0, .4, 1, 0, 0);
glyph.render(ctx);
if (fontStyle == 'italic') ctx.transform(1, 0, -.4, 1, 0, 0);
ctx.lineWidth = lw;
ctx.scale(1/scale, -1/scale);
ctx.translate(-this.x, -this.y);
this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
this.x += dx[i];
}
}
return;
}
if (ctx.strokeStyle != '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
if (ctx.fillStyle != '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
}
this.getText = function() {
// OVERRIDE ME
}
this.measureText = function(ctx) {
var customFont = this.parent.style('font-family').getDefinition();
if (customFont != null) {
var fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
var measure = 0;
var text = this.getText();
if (customFont.isRTL) text = text.split("").reverse().join("");
var dx = svg.ToNumberArray(this.parent.attribute('dx').value);
for (var i=0; i<text.length; i++) {
var glyph = this.getGlyph(customFont, text, i);
measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
if (typeof(dx[i]) != 'undefined' && !isNaN(dx[i])) {
measure += dx[i];
}
}
return measure;
}
var textToMeasure = svg.compressSpaces(this.getText());
if (!ctx.measureText) return textToMeasure.length * 10;
ctx.save();
this.setContext(ctx);
var width = ctx.measureText(textToMeasure).width;
ctx.restore();
return width;
}
}
svg.Element.TextElementBase.prototype = new svg.Element.RenderedElementBase;
// tspan
svg.Element.tspan = function(node) {
this.base = svg.Element.TextElementBase;
this.base(node);
this.text = node.nodeType == 3 ? node.nodeValue : // text
node.childNodes.length > 0 ? node.childNodes[0].nodeValue : // element
node.text;
this.getText = function() {
return this.text;
}
}
svg.Element.tspan.prototype = new svg.Element.TextElementBase;
// tref
svg.Element.tref = function(node) {
this.base = svg.Element.TextElementBase;
this.base(node);
this.getText = function() {
var element = this.attribute('xlink:href').getDefinition();
if (element != null) return element.children[0].getText();
}
}
svg.Element.tref.prototype = new svg.Element.TextElementBase;
// a element
svg.Element.a = function(node) {
this.base = svg.Element.TextElementBase;
this.base(node);
this.hasText = true;
for (var i=0; i<node.childNodes.length; i++) {
if (node.childNodes[i].nodeType != 3) this.hasText = false;
}
// this might contain text
this.text = this.hasText ? node.childNodes[0].nodeValue : '';
this.getText = function() {
return this.text;
}
this.baseRenderChildren = this.renderChildren;
this.renderChildren = function(ctx) {
if (this.hasText) {
// render as text element
this.baseRenderChildren(ctx);
var fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
}
else {
// render as temporary group
var g = new svg.Element.g();
g.children = this.children;
g.parent = this;
g.render(ctx);
}
}
this.onclick = function() {
window.open(this.attribute('xlink:href').value);
}
this.onmousemove = function() {
svg.ctx.canvas.style.cursor = 'pointer';
}
}
svg.Element.a.prototype = new svg.Element.TextElementBase;
// image element
svg.Element.image = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
var href = this.attribute('xlink:href').value;
var isSvg = href.match(/\.svg$/)
svg.Images.push(this);
this.loaded = false;
if (!isSvg) {
this.img = document.createElement('img');
var self = this;
this.img.onload = function() { self.loaded = true; }
this.img.onerror = function() { if (console) console.log('ERROR: image "' + href + '" not found'); self.loaded = true; }
this.img.src = href;
}
else {
this.img = svg.ajax(href);
this.loaded = true;
}
this.renderChildren = function(ctx) {
var x = this.attribute('x').toPixels('x');
var y = this.attribute('y').toPixels('y');
var width = this.attribute('width').toPixels('x');
var height = this.attribute('height').toPixels('y');
if (width == 0 || height == 0) return;
ctx.save();
if (isSvg) {
ctx.drawSvg(this.img, x, y, width, height);
}
else {
ctx.translate(x, y);
svg.AspectRatio(ctx,
this.attribute('preserveAspectRatio').value,
width,
this.img.width,
height,
this.img.height,
0,
0);
ctx.drawImage(this.img, 0, 0);
}
ctx.restore();
}
}
svg.Element.image.prototype = new svg.Element.RenderedElementBase;
// group element
svg.Element.g = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
this.getBoundingBox = function() {
var bb = new svg.BoundingBox();
for (var i=0; i<this.children.length; i++) {
bb.addBoundingBox(this.children[i].getBoundingBox());
}
return bb;
};
}
svg.Element.g.prototype = new svg.Element.RenderedElementBase;
// symbol element
svg.Element.symbol = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
this.baseSetContext = this.setContext;
this.setContext = function(ctx) {
this.baseSetContext(ctx);
// viewbox
if (this.attribute('viewBox').hasValue()) {
var viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
var minX = viewBox[0];
var minY = viewBox[1];
width = viewBox[2];
height = viewBox[3];
svg.AspectRatio(ctx,
this.attribute('preserveAspectRatio').value,
this.attribute('width').toPixels('x'),
width,
this.attribute('height').toPixels('y'),
height,
minX,
minY);
svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
}
}
}
svg.Element.symbol.prototype = new svg.Element.RenderedElementBase;
// style element
svg.Element.style = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
// text, or spaces then CDATA
var css = node.childNodes[0].nodeValue + (node.childNodes.length > 1 ? node.childNodes[1].nodeValue : '');
css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*\/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, ''); // remove comments
css = svg.compressSpaces(css); // replace whitespace
var cssDefs = css.split('}');
for (var i=0; i<cssDefs.length; i++) {
if (svg.trim(cssDefs[i]) != '') {
var cssDef = cssDefs[i].split('{');
var cssClasses = cssDef[0].split(',');
var cssProps = cssDef[1].split(';');
for (var j=0; j<cssClasses.length; j++) {
var cssClass = svg.trim(cssClasses[j]);
if (cssClass != '') {
var props = {};
for (var k=0; k<cssProps.length; k++) {
var prop = cssProps[k].indexOf(':');
var name = cssProps[k].substr(0, prop);
var value = cssProps[k].substr(prop + 1, cssProps[k].length - prop);
if (name != null && value != null) {
props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
}
}
svg.Styles[cssClass] = props;
if (cssClass == '@font-face') {
var fontFamily = props['font-family'].value.replace(/"/g,'');
var srcs = props['src'].value.split(',');
for (var s=0; s<srcs.length; s++) {
if (srcs[s].indexOf('format("svg")') > 0) {
var urlStart = srcs[s].indexOf('url');
var urlEnd = srcs[s].indexOf(')', urlStart);
var url = srcs[s].substr(urlStart + 5, urlEnd - urlStart - 6);
var doc = svg.parseXml(svg.ajax(url));
var fonts = doc.getElementsByTagName('font');
for (var f=0; f<fonts.length; f++) {
var font = svg.CreateElement(fonts[f]);
svg.Definitions[fontFamily] = font;
}
}
}
}
}
}
}
}
}
svg.Element.style.prototype = new svg.Element.ElementBase;
// use element
svg.Element.use = function(node) {
this.base = svg.Element.RenderedElementBase;
this.base(node);
this.baseSetContext = this.setContext;
this.setContext = function(ctx) {
this.baseSetContext(ctx);
if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
}
this.getDefinition = function() {
var element = this.attribute('xlink:href').getDefinition();
if (this.attribute('width').hasValue()) element.attribute('width', true).value = this.attribute('width').value;
if (this.attribute('height').hasValue()) element.attribute('height', true).value = this.attribute('height').value;
return element;
}
this.path = function(ctx) {
var element = this.getDefinition();
if (element != null) element.path(ctx);
}
this.renderChildren = function(ctx) {
var element = this.getDefinition();
if (element != null) {
// temporarily detach from parent and render
var oldParent = element.parent;
element.parent = null;
element.render(ctx);
element.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');
// temporarily remove mask to avoid recursion
var mask = element.attribute('mask').value;
element.attribute('mask').value = '';
var cMask = document.createElement('canvas');
cMask.width = x + width;
cMask.height = y + height;
var maskCtx = cMask.getContext('2d');
this.renderChildren(maskCtx);
var c = document.createElement('canvas');
c.width = x + width;
c.height = y + height;
var tempCtx = c.getContext('2d');
element.render(tempCtx);
tempCtx.globalCompositeOperation = 'destination-in';
tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
tempCtx.fillRect(0, 0, x + width, y + height);
ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
ctx.fillRect(0, 0, x + width, y + height);
// reassign mask
element.attribute('mask').value = mask;
}
this.render = function(ctx) {
// NO RENDER
}
}
svg.Element.mask.prototype = new svg.Element.ElementBase;
// clip element
svg.Element.clipPath = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.apply = function(ctx) {
for (var i=0; i<this.children.length; i++) {
if (this.children[i].path) {
this.children[i].path(ctx);
ctx.clip();
}
}
}
this.render = function(ctx) {
// NO RENDER
}
}
svg.Element.clipPath.prototype = new svg.Element.ElementBase;
// filters
svg.Element.filter = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
this.apply = function(ctx, element) {
// render as temp svg
var bb = element.getBoundingBox();
var x = this.attribute('x').toPixels('x');
var y = this.attribute('y').toPixels('y');
if (x == 0 || y == 0) {
x = bb.x1;
y = bb.y1;
}
var width = this.attribute('width').toPixels('x');
var height = this.attribute('height').toPixels('y');
if (width == 0 || height == 0) {
width = bb.width();
height = bb.height();
}
// temporarily remove filter to avoid recursion
var filter = element.style('filter').value;
element.style('filter').value = '';
// max filter distance
var extraPercent = .20;
var px = extraPercent * width;
var py = extraPercent * height;
var c = document.createElement('canvas');
c.width = width + 2*px;
c.height = height + 2*py;
var tempCtx = c.getContext('2d');
tempCtx.translate(-x + px, -y + py);
element.render(tempCtx);
// apply filters
for (var i=0; i<this.children.length; i++) {
this.children[i].apply(tempCtx, 0, 0, width + 2*px, height + 2*py);
}
// render on me
ctx.drawImage(c, 0, 0, width + 2*px, height + 2*py, x - px, y - py, width + 2*px, height + 2*py);
// reassign filter
element.style('filter', true).value = filter;
}
this.render = function(ctx) {
// NO RENDER
}
}
svg.Element.filter.prototype = new svg.Element.ElementBase;
svg.Element.feGaussianBlur = function(node) {
this.base = svg.Element.ElementBase;
this.base(node);
function make_fgauss(sigma) {
sigma = Math.max(sigma, 0.01);
var len = Math.ceil(sigma * 4.0) + 1;
mask = [];
for (var i = 0; i < len; i++) {
mask[i] = Math.exp(-0.5 * (i / sigma) * (i / sigma));
}
return mask;
}
function normalize(mask) {
var sum = 0;
for (var i = 1; i < mask.length; i++) {
sum += Math.abs(mask[i]);
}
sum = 2 * sum + Math.abs(mask[0]);
for (var i = 0; i < mask.length; i++) {
mask[i] /= sum;
}
return mask;
}
function convolve_even(src, dst, mask, width, height) {
for (var y = 0; y < height; y++) {
for (var x = 0; x < width; x++) {
var a = imGet(src, x, y, width, height, 3)/255;
for (var rgba = 0; rgba < 4; rgba++) {
var sum = mask[0] * (a==0?255:imGet(src, x, y, width, height, rgba)) * (a==0||rgba==3?1:a);
for (var i = 1; i < mask.length; i++) {
var a1 = imGet(src, Math.max(x-i,0), y, width, height, 3)/255;
var a2 = imGet(src, Math.min(x+i, width-1), y, width, height, 3)/255;
sum += mask[i] *
((a1==0?255:imGet(src, Math.max(x-i,0), y, width, height, rgba)) * (a1==0||rgba==3?1:a1) +
(a2==0?255:imGet(src, Math.min(x+i, width-1), y, width, height, rgba)) * (a2==0||rgba==3?1:a2));
}
imSet(dst, y, x, height, width, rgba, sum);
}
}
}
}
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 blur(ctx, width, height, sigma)
{
var srcData = ctx.getImageData(0, 0, width, height);
var mask = make_fgauss(sigma);
mask = normalize(mask);
tmp = [];
convolve_even(srcData.data, tmp, mask, width, height);
convolve_even(tmp, srcData.data, mask, height, width);
ctx.clearRect(0, 0, width, height);
ctx.putImageData(srcData, 0, 0);
}
this.apply = function(ctx, x, y, width, height) {
// assuming x==0 && y==0 for now
blur(ctx, width, height, this.attribute('stdDeviation').numValue());
}
}
svg.Element.filter.prototype = new svg.Element.feGaussianBlur;
// 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) {
if (console) console.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
}
svg.Element.MISSING.prototype = new svg.Element.ElementBase;
// element factory
svg.CreateElement = function(node) {
var className = node.nodeName.replace(/^[^:]+:/,''); // remove namespace
className = className.replace(/\-/g,''); // remove dashes
var e = null;
if (typeof(svg.Element[className]) != 'undefined') {
e = new svg.Element[className](node);
}
else {
e = new svg.Element.MISSING(node);
}
e.type = node.nodeName;
return e;
}
// load from url
svg.load = function(ctx, url) {
svg.loadXml(ctx, svg.ajax(url));
}
// load from xml
svg.loadXml = function(ctx, xml) {
svg.loadXmlDoc(ctx, svg.parseXml(xml));
}
svg.loadXmlDoc = function(ctx, dom) {
svg.init(ctx);
var mapXY = function(p) {
var e = ctx.canvas;
while (e) {
p.x -= e.offsetLeft;
p.y -= e.offsetTop;
e = e.offsetParent;
}
if (window.scrollX) p.x += window.scrollX;
if (window.scrollY) p.y += window.scrollY;
return p;
}
// bind mouse
if (svg.opts['ignoreMouse'] != true) {
ctx.canvas.onclick = function(e) {
var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
svg.Mouse.onclick(p.x, p.y);
};
ctx.canvas.onmousemove = function(e) {
var p = mapXY(new svg.Point(e != null ? e.clientX : event.clientX, e != null ? e.clientY : event.clientY));
svg.Mouse.onmousemove(p.x, p.y);
};
}
var e = svg.CreateElement(dom.documentElement);
e.root = true;
// render loop
var isFirstRender = true;
var draw = function() {
svg.ViewPort.Clear();
if (ctx.canvas.parentNode) svg.ViewPort.SetCurrent(ctx.canvas.parentNode.clientWidth, ctx.canvas.parentNode.clientHeight);
if (svg.opts['ignoreDimensions'] != true) {
// set canvas size
if (e.style('width').hasValue()) {
ctx.canvas.width = e.style('width').toPixels('x');
ctx.canvas.style.width = ctx.canvas.width + 'px';
}
if (e.style('height').hasValue()) {
ctx.canvas.height = e.style('height').toPixels('y');
ctx.canvas.style.height = ctx.canvas.height + 'px';
}
}
var cWidth = ctx.canvas.clientWidth || ctx.canvas.width;
var cHeight = ctx.canvas.clientHeight || ctx.canvas.height;
if (svg.opts['ignoreDimensions'] == true && e.style('width').hasValue() && e.style('height').hasValue()) {
cWidth = e.style('width').toPixels('x');
cHeight = e.style('height').toPixels('y');
}
svg.ViewPort.SetCurrent(cWidth, cHeight);
if (svg.opts['offsetX'] != null) e.attribute('x', true).value = svg.opts['offsetX'];
if (svg.opts['offsetY'] != null) e.attribute('y', true).value = svg.opts['offsetY'];
if (svg.opts['scaleWidth'] != null && svg.opts['scaleHeight'] != null) {
var xRatio = 1, yRatio = 1, viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
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 (e.attribute('height').hasValue()) yRatio = e.attribute('height').toPixels('y') / svg.opts['scaleHeight'];
else if (!isNaN(viewBox[3])) yRatio = viewBox[3] / svg.opts['scaleHeight'];
e.attribute('width', true).value = svg.opts['scaleWidth'];
e.attribute('height', true).value = svg.opts['scaleHeight'];
e.attribute('viewBox', true).value = '0 0 ' + (cWidth * xRatio) + ' ' + (cHeight * yRatio);
e.attribute('preserveAspectRatio', true).value = 'none';
}
// clear and render
if (svg.opts['ignoreClear'] != true) {
ctx.clearRect(0, 0, cWidth, cHeight);
}
e.render(ctx);
if (isFirstRender) {
isFirstRender = false;
if (typeof(svg.opts['renderCallback']) == 'function') svg.opts['renderCallback']();
}
}
var waitingForImages = true;
if (svg.ImagesLoaded()) {
waitingForImages = false;
draw();
}
svg.intervalID = setInterval(function() {
var needUpdate = false;
if (waitingForImages && svg.ImagesLoaded()) {
waitingForImages = false;
needUpdate = true;
}
// need update from mouse events?
if (svg.opts['ignoreMouse'] != true) {
needUpdate = needUpdate | svg.Mouse.hasEvents();
}
// need update from animations?
if (svg.opts['ignoreAnimation'] != true) {
for (var i=0; i<svg.Animations.length; i++) {
needUpdate = needUpdate | svg.Animations[i].update(1000 / svg.FRAMERATE);
}
}
// need update from redraw?
if (typeof(svg.opts['forceRedraw']) == 'function') {
if (svg.opts['forceRedraw']() == true) needUpdate = true;
}
// render if needed
if (needUpdate) {
draw();
svg.Mouse.runEvents(); // run and clear our events
}
}, 1000 / svg.FRAMERATE);
}
svg.stop = function() {
if (svg.intervalID) {
clearInterval(svg.intervalID);
}
}
svg.Mouse = new (function() {
this.events = [];
this.hasEvents = function() { return this.events.length != 0; }
this.onclick = function(x, y) {
this.events.push({ type: 'onclick', x: x, y: y,
run: function(e) { if (e.onclick) e.onclick(); }
});
}
this.onmousemove = function(x, y) {
this.events.push({ type: 'onmousemove', x: x, y: y,
run: function(e) { if (e.onmousemove) e.onmousemove(); }
});
}
this.eventElements = [];
this.checkPath = function(element, ctx) {
for (var i=0; i<this.events.length; i++) {
var e = this.events[i];
if (ctx.isPointInPath && ctx.isPointInPath(e.x, e.y)) this.eventElements[i] = element;
}
}
this.checkBoundingBox = function(element, bb) {
for (var i=0; i<this.events.length; i++) {
var e = this.events[i];
if (bb.isPointInBox(e.x, e.y)) this.eventElements[i] = element;
}
}
this.runEvents = function() {
svg.ctx.canvas.style.cursor = '';
for (var i=0; i<this.events.length; i++) {
var e = this.events[i];
var element = this.eventElements[i];
while (element) {
e.run(element);
element = element.parent;
}
}
// done running, clear
this.events = [];
this.eventElements = [];
}
});
return svg;
}
})();
if (CanvasRenderingContext2D) {
CanvasRenderingContext2D.prototype.drawSvg = function(s, dx, dy, dw, dh) {
canvg(this.canvas, s, {
ignoreMouse: true,
ignoreAnimation: true,
ignoreDimensions: true,
ignoreClear: true,
offsetX: dx,
offsetY: dy,
scaleWidth: dw,
scaleHeight: dh
});
}
}