/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
if(!dojo._hasResource["dojox.gfx.svg"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.gfx.svg"] = true;
dojo.provide("dojox.gfx.svg");
dojo.require("dojox.gfx._base");
dojo.require("dojox.gfx.shape");
dojo.require("dojox.gfx.path");
(function(){
var d = dojo, g = dojox.gfx, gs = g.shape, svg = g.svg;
svg.useSvgWeb = (typeof window.svgweb != "undefined");
function _createElementNS(ns, nodeType){
// summary:
// Internal helper to deal with creating elements that
// are namespaced. Mainly to get SVG markup output
// working on IE.
if(dojo.doc.createElementNS){
return dojo.doc.createElementNS(ns,nodeType);
}else{
return dojo.doc.createElement(nodeType);
}
}
function _createTextNode(text){
if(svg.useSvgWeb){
return dojo.doc.createTextNode(text, true);
}else{
return dojo.doc.createTextNode(text);
}
}
function _createFragment(){
if(svg.useSvgWeb){
return dojo.doc.createDocumentFragment(true);
}else{
return dojo.doc.createDocumentFragment();
}
}
svg.xmlns = {
xlink: "http://www.w3.org/1999/xlink",
svg: "http://www.w3.org/2000/svg"
};
svg.getRef = function(name){
// summary: returns a DOM Node specified by the name argument or null
// name: String: an SVG external reference
if(!name || name == "none") return null;
if(name.match(/^url\(#.+\)$/)){
return d.byId(name.slice(5, -1)); // Node
}
// alternative representation of a reference
if(name.match(/^#dojoUnique\d+$/)){
// we assume here that a reference was generated by dojox.gfx
return d.byId(name.slice(1)); // Node
}
return null; // Node
};
svg.dasharray = {
solid: "none",
shortdash: [4, 1],
shortdot: [1, 1],
shortdashdot: [4, 1, 1, 1],
shortdashdotdot: [4, 1, 1, 1, 1, 1],
dot: [1, 3],
dash: [4, 3],
longdash: [8, 3],
dashdot: [4, 3, 1, 3],
longdashdot: [8, 3, 1, 3],
longdashdotdot: [8, 3, 1, 3, 1, 3]
};
d.declare("dojox.gfx.svg.Shape", gs.Shape, {
// summary: SVG-specific implementation of dojox.gfx.Shape methods
setFill: function(fill){
// summary: sets a fill object (SVG)
// fill: Object: a fill object
// (see dojox.gfx.defaultLinearGradient,
// dojox.gfx.defaultRadialGradient,
// dojox.gfx.defaultPattern,
// or dojo.Color)
if(!fill){
// don't fill
this.fillStyle = null;
this.rawNode.setAttribute("fill", "none");
this.rawNode.setAttribute("fill-opacity", 0);
return this;
}
var f;
// FIXME: slightly magical. We're using the outer scope's "f", but setting it later
var setter = function(x){
// we assume that we're executing in the scope of the node to mutate
this.setAttribute(x, f[x].toFixed(8));
};
if(typeof(fill) == "object" && "type" in fill){
// gradient
switch(fill.type){
case "linear":
f = g.makeParameters(g.defaultLinearGradient, fill);
var gradient = this._setFillObject(f, "linearGradient");
d.forEach(["x1", "y1", "x2", "y2"], setter, gradient);
break;
case "radial":
f = g.makeParameters(g.defaultRadialGradient, fill);
var gradient = this._setFillObject(f, "radialGradient");
d.forEach(["cx", "cy", "r"], setter, gradient);
break;
case "pattern":
f = g.makeParameters(g.defaultPattern, fill);
var pattern = this._setFillObject(f, "pattern");
d.forEach(["x", "y", "width", "height"], setter, pattern);
break;
}
this.fillStyle = f;
return this;
}
// color object
var f = g.normalizeColor(fill);
this.fillStyle = f;
this.rawNode.setAttribute("fill", f.toCss());
this.rawNode.setAttribute("fill-opacity", f.a);
this.rawNode.setAttribute("fill-rule", "evenodd");
return this; // self
},
setStroke: function(stroke){
// summary:
// sets a stroke object (SVG)
// stroke: Object
// a stroke object (see dojox.gfx.defaultStroke)
var rn = this.rawNode;
if(!stroke){
// don't stroke
this.strokeStyle = null;
rn.setAttribute("stroke", "none");
rn.setAttribute("stroke-opacity", 0);
return this;
}
// normalize the stroke
if(typeof stroke == "string" || d.isArray(stroke) || stroke instanceof d.Color){
stroke = { color: stroke };
}
var s = this.strokeStyle = g.makeParameters(g.defaultStroke, stroke);
s.color = g.normalizeColor(s.color);
// generate attributes
if(s){
rn.setAttribute("stroke", s.color.toCss());
rn.setAttribute("stroke-opacity", s.color.a);
rn.setAttribute("stroke-width", s.width);
rn.setAttribute("stroke-linecap", s.cap);
if(typeof s.join == "number"){
rn.setAttribute("stroke-linejoin", "miter");
rn.setAttribute("stroke-miterlimit", s.join);
}else{
rn.setAttribute("stroke-linejoin", s.join);
}
var da = s.style.toLowerCase();
if(da in svg.dasharray){
da = svg.dasharray[da];
}
if(da instanceof Array){
da = d._toArray(da);
for(var i = 0; i < da.length; ++i){
da[i] *= s.width;
}
if(s.cap != "butt"){
for(var i = 0; i < da.length; i += 2){
da[i] -= s.width;
if(da[i] < 1){ da[i] = 1; }
}
for(var i = 1; i < da.length; i += 2){
da[i] += s.width;
}
}
da = da.join(",");
}
rn.setAttribute("stroke-dasharray", da);
rn.setAttribute("dojoGfxStrokeStyle", s.style);
}
return this; // self
},
_getParentSurface: function(){
var surface = this.parent;
for(; surface && !(surface instanceof g.Surface); surface = surface.parent);
return surface;
},
_setFillObject: function(f, nodeType){
var svgns = svg.xmlns.svg;
this.fillStyle = f;
var surface = this._getParentSurface(),
defs = surface.defNode,
fill = this.rawNode.getAttribute("fill"),
ref = svg.getRef(fill);
if(ref){
fill = ref;
if(fill.tagName.toLowerCase() != nodeType.toLowerCase()){
var id = fill.id;
fill.parentNode.removeChild(fill);
fill = _createElementNS(svgns, nodeType);
fill.setAttribute("id", id);
defs.appendChild(fill);
}else{
while(fill.childNodes.length){
fill.removeChild(fill.lastChild);
}
}
}else{
fill = _createElementNS(svgns, nodeType);
fill.setAttribute("id", g._base._getUniqueId());
defs.appendChild(fill);
}
if(nodeType == "pattern"){
fill.setAttribute("patternUnits", "userSpaceOnUse");
var img = _createElementNS(svgns, "image");
img.setAttribute("x", 0);
img.setAttribute("y", 0);
img.setAttribute("width", f.width .toFixed(8));
img.setAttribute("height", f.height.toFixed(8));
img.setAttributeNS(svg.xmlns.xlink, "xlink:href", f.src);
fill.appendChild(img);
}else{
fill.setAttribute("gradientUnits", "userSpaceOnUse");
for(var i = 0; i < f.colors.length; ++i){
var c = f.colors[i], t = _createElementNS(svgns, "stop"),
cc = c.color = g.normalizeColor(c.color);
t.setAttribute("offset", c.offset.toFixed(8));
t.setAttribute("stop-color", cc.toCss());
t.setAttribute("stop-opacity", cc.a);
fill.appendChild(t);
}
}
this.rawNode.setAttribute("fill", "url(#" + fill.getAttribute("id") +")");
this.rawNode.removeAttribute("fill-opacity");
this.rawNode.setAttribute("fill-rule", "evenodd");
return fill;
},
_applyTransform: function() {
var matrix = this.matrix;
if(matrix){
var tm = this.matrix;
this.rawNode.setAttribute("transform", "matrix(" +
tm.xx.toFixed(8) + "," + tm.yx.toFixed(8) + "," +
tm.xy.toFixed(8) + "," + tm.yy.toFixed(8) + "," +
tm.dx.toFixed(8) + "," + tm.dy.toFixed(8) + ")");
}else{
this.rawNode.removeAttribute("transform");
}
return this;
},
setRawNode: function(rawNode){
// summary:
// assigns and clears the underlying node that will represent this
// shape. Once set, transforms, gradients, etc, can be applied.
// (no fill & stroke by default)
var r = this.rawNode = rawNode;
if(this.shape.type!="image"){
r.setAttribute("fill", "none");
}
r.setAttribute("fill-opacity", 0);
r.setAttribute("stroke", "none");
r.setAttribute("stroke-opacity", 0);
r.setAttribute("stroke-width", 1);
r.setAttribute("stroke-linecap", "butt");
r.setAttribute("stroke-linejoin", "miter");
r.setAttribute("stroke-miterlimit", 4);
},
setShape: function(newShape){
// summary: sets a shape object (SVG)
// newShape: Object: a shape object
// (see dojox.gfx.defaultPath,
// dojox.gfx.defaultPolyline,
// dojox.gfx.defaultRect,
// dojox.gfx.defaultEllipse,
// dojox.gfx.defaultCircle,
// dojox.gfx.defaultLine,
// or dojox.gfx.defaultImage)
this.shape = g.makeParameters(this.shape, newShape);
for(var i in this.shape){
if(i != "type"){
this.rawNode.setAttribute(i, this.shape[i]);
}
}
this.bbox = null;
return this; // self
},
// move family
_moveToFront: function(){
// summary: moves a shape to front of its parent's list of shapes (SVG)
this.rawNode.parentNode.appendChild(this.rawNode);
return this; // self
},
_moveToBack: function(){
// summary: moves a shape to back of its parent's list of shapes (SVG)
this.rawNode.parentNode.insertBefore(this.rawNode, this.rawNode.parentNode.firstChild);
return this; // self
}
});
dojo.declare("dojox.gfx.svg.Group", svg.Shape, {
// summary: a group shape (SVG), which can be used
// to logically group shapes (e.g, to propagate matricies)
constructor: function(){
gs.Container._init.call(this);
},
setRawNode: function(rawNode){
// summary: sets a raw SVG node to be used by this shape
// rawNode: Node: an SVG node
this.rawNode = rawNode;
}
});
svg.Group.nodeType = "g";
dojo.declare("dojox.gfx.svg.Rect", [svg.Shape, gs.Rect], {
// summary: a rectangle shape (SVG)
setShape: function(newShape){
// summary: sets a rectangle shape object (SVG)
// newShape: Object: a rectangle shape object
this.shape = g.makeParameters(this.shape, newShape);
this.bbox = null;
for(var i in this.shape){
if(i != "type" && i != "r"){
this.rawNode.setAttribute(i, this.shape[i]);
}
}
if(this.shape.r){
this.rawNode.setAttribute("ry", this.shape.r);
this.rawNode.setAttribute("rx", this.shape.r);
}
return this; // self
}
});
svg.Rect.nodeType = "rect";
dojo.declare("dojox.gfx.svg.Ellipse", [svg.Shape, gs.Ellipse], {});
svg.Ellipse.nodeType = "ellipse";
dojo.declare("dojox.gfx.svg.Circle", [svg.Shape, gs.Circle], {});
svg.Circle.nodeType = "circle";
dojo.declare("dojox.gfx.svg.Line", [svg.Shape, gs.Line], {});
svg.Line.nodeType = "line";
dojo.declare("dojox.gfx.svg.Polyline", [svg.Shape, gs.Polyline], {
// summary: a polyline/polygon shape (SVG)
setShape: function(points, closed){
// summary: sets a polyline/polygon shape object (SVG)
// points: Object: a polyline/polygon shape object
if(points && points instanceof Array){
// branch
// points: Array: an array of points
this.shape = g.makeParameters(this.shape, { points: points });
if(closed && this.shape.points.length){
this.shape.points.push(this.shape.points[0]);
}
}else{
this.shape = g.makeParameters(this.shape, points);
}
this.bbox = null;
this._normalizePoints();
var attr = [], p = this.shape.points;
for(var i = 0; i < p.length; ++i){
attr.push(p[i].x.toFixed(8), p[i].y.toFixed(8));
}
this.rawNode.setAttribute("points", attr.join(" "));
return this; // self
}
});
svg.Polyline.nodeType = "polyline";
dojo.declare("dojox.gfx.svg.Image", [svg.Shape, gs.Image], {
// summary: an image (SVG)
setShape: function(newShape){
// summary: sets an image shape object (SVG)
// newShape: Object: an image shape object
this.shape = g.makeParameters(this.shape, newShape);
this.bbox = null;
var rawNode = this.rawNode;
for(var i in this.shape){
if(i != "type" && i != "src"){
rawNode.setAttribute(i, this.shape[i]);
}
}
rawNode.setAttribute("preserveAspectRatio", "none");
rawNode.setAttributeNS(svg.xmlns.xlink, "xlink:href", this.shape.src);
return this; // self
}
});
svg.Image.nodeType = "image";
dojo.declare("dojox.gfx.svg.Text", [svg.Shape, gs.Text], {
// summary: an anchored text (SVG)
setShape: function(newShape){
// summary: sets a text shape object (SVG)
// newShape: Object: a text shape object
this.shape = g.makeParameters(this.shape, newShape);
this.bbox = null;
var r = this.rawNode, s = this.shape;
r.setAttribute("x", s.x);
r.setAttribute("y", s.y);
r.setAttribute("text-anchor", s.align);
r.setAttribute("text-decoration", s.decoration);
r.setAttribute("rotate", s.rotated ? 90 : 0);
r.setAttribute("kerning", s.kerning ? "auto" : 0);
r.setAttribute("text-rendering", "optimizeLegibility");
// update the text content
if(r.firstChild){
r.firstChild.nodeValue = s.text;
}else{
r.appendChild(_createTextNode(s.text));
}
return this; // self
},
getTextWidth: function(){
// summary: get the text width in pixels
var rawNode = this.rawNode,
oldParent = rawNode.parentNode,
_measurementNode = rawNode.cloneNode(true);
_measurementNode.style.visibility = "hidden";
// solution to the "orphan issue" in FF
var _width = 0, _text = _measurementNode.firstChild.nodeValue;
oldParent.appendChild(_measurementNode);
// solution to the "orphan issue" in Opera
// (nodeValue == "" hangs firefox)
if(_text!=""){
while(!_width){
//Yang: work around svgweb bug 417 -- http://code.google.com/p/svgweb/issues/detail?id=417
if (_measurementNode.getBBox)
_width = parseInt(_measurementNode.getBBox().width);
else
_width = 68;
}
}
oldParent.removeChild(_measurementNode);
return _width;
}
});
svg.Text.nodeType = "text";
dojo.declare("dojox.gfx.svg.Path", [svg.Shape, g.path.Path], {
// summary: a path shape (SVG)
_updateWithSegment: function(segment){
// summary: updates the bounding box of path with new segment
// segment: Object: a segment
this.inherited(arguments);
if(typeof(this.shape.path) == "string"){
this.rawNode.setAttribute("d", this.shape.path);
}
},
setShape: function(newShape){
// summary: forms a path using a shape (SVG)
// newShape: Object: an SVG path string or a path object (see dojox.gfx.defaultPath)
this.inherited(arguments);
if(this.shape.path){
this.rawNode.setAttribute("d", this.shape.path);
}else{
this.rawNode.removeAttribute("d");
}
return this; // self
}
});
svg.Path.nodeType = "path";
dojo.declare("dojox.gfx.svg.TextPath", [svg.Shape, g.path.TextPath], {
// summary: a textpath shape (SVG)
_updateWithSegment: function(segment){
// summary: updates the bounding box of path with new segment
// segment: Object: a segment
this.inherited(arguments);
this._setTextPath();
},
setShape: function(newShape){
// summary: forms a path using a shape (SVG)
// newShape: Object: an SVG path string or a path object (see dojox.gfx.defaultPath)
this.inherited(arguments);
this._setTextPath();
return this; // self
},
_setTextPath: function(){
if(typeof this.shape.path != "string"){ return; }
var r = this.rawNode;
if(!r.firstChild){
var tp = _createElementNS(svg.xmlns.svg, "textPath"),
tx = _createTextNode("");
tp.appendChild(tx);
r.appendChild(tp);
}
var ref = r.firstChild.getAttributeNS(svg.xmlns.xlink, "href"),
path = ref && svg.getRef(ref);
if(!path){
var surface = this._getParentSurface();
if(surface){
var defs = surface.defNode;
path = _createElementNS(svg.xmlns.svg, "path");
var id = g._base._getUniqueId();
path.setAttribute("id", id);
defs.appendChild(path);
r.firstChild.setAttributeNS(svg.xmlns.xlink, "xlink:href", "#" + id);
}
}
if(path){
path.setAttribute("d", this.shape.path);
}
},
_setText: function(){
var r = this.rawNode;
if(!r.firstChild){
var tp = _createElementNS(svg.xmlns.svg, "textPath"),
tx = _createTextNode("");
tp.appendChild(tx);
r.appendChild(tp);
}
r = r.firstChild;
var t = this.text;
r.setAttribute("alignment-baseline", "middle");
switch(t.align){
case "middle":
r.setAttribute("text-anchor", "middle");
r.setAttribute("startOffset", "50%");
break;
case "end":
r.setAttribute("text-anchor", "end");
r.setAttribute("startOffset", "100%");
break;
default:
r.setAttribute("text-anchor", "start");
r.setAttribute("startOffset", "0%");
break;
}
//r.parentNode.setAttribute("alignment-baseline", "central");
//r.setAttribute("dominant-baseline", "central");
r.setAttribute("baseline-shift", "0.5ex");
r.setAttribute("text-decoration", t.decoration);
r.setAttribute("rotate", t.rotated ? 90 : 0);
r.setAttribute("kerning", t.kerning ? "auto" : 0);
r.firstChild.data = t.text;
}
});
svg.TextPath.nodeType = "text";
dojo.declare("dojox.gfx.svg.Surface", gs.Surface, {
// summary: a surface object to be used for drawings (SVG)
constructor: function(){
gs.Container._init.call(this);
},
destroy: function(){
this.defNode = null; // release the external reference
this.inherited(arguments);
},
setDimensions: function(width, height){
// summary: sets the width and height of the rawNode
// width: String: width of surface, e.g., "100px"
// height: String: height of surface, e.g., "100px"
if(!this.rawNode){ return this; }
this.rawNode.setAttribute("width", width);
this.rawNode.setAttribute("height", height);
return this; // self
},
getDimensions: function(){
// summary: returns an object with properties "width" and "height"
var t = this.rawNode ? {
width: g.normalizedLength(this.rawNode.getAttribute("width")),
height: g.normalizedLength(this.rawNode.getAttribute("height"))} : null;
return t; // Object
}
});
svg.createSurface = function(parentNode, width, height){
// summary: creates a surface (SVG)
// parentNode: Node: a parent node
// width: String: width of surface, e.g., "100px"
// height: String: height of surface, e.g., "100px"
var s = new svg.Surface();
s.rawNode = _createElementNS(svg.xmlns.svg, "svg");
if(width){
s.rawNode.setAttribute("width", width);
}
if(height){
s.rawNode.setAttribute("height", height);
}
var defNode = _createElementNS(svg.xmlns.svg, "defs");
s.rawNode.appendChild(defNode);
s.defNode = defNode;
s._parent = d.byId(parentNode);
s._parent.appendChild(s.rawNode);
return s; // dojox.gfx.Surface
};
// Extenders
var Font = {
_setFont: function(){
// summary: sets a font object (SVG)
var f = this.fontStyle;
// next line doesn't work in Firefox 2 or Opera 9
//this.rawNode.setAttribute("font", dojox.gfx.makeFontString(this.fontStyle));
this.rawNode.setAttribute("font-style", f.style);
this.rawNode.setAttribute("font-variant", f.variant);
this.rawNode.setAttribute("font-weight", f.weight);
this.rawNode.setAttribute("font-size", f.size);
this.rawNode.setAttribute("font-family", f.family);
}
};
var C = gs.Container, Container = {
openBatch: function() {
// summary: starts a new batch, subsequent new child shapes will be held in
// the batch instead of appending to the container directly
this.fragment = _createFragment();
},
closeBatch: function() {
// summary: submits the current batch, append all pending child shapes to DOM
if (this.fragment) {
this.rawNode.appendChild(this.fragment);
delete this.fragment;
}
},
add: function(shape){
// summary: adds a shape to a group/surface
// shape: dojox.gfx.Shape: an VML shape object
if(this != shape.getParent()){
if (this.fragment) {
this.fragment.appendChild(shape.rawNode);
} else {
this.rawNode.appendChild(shape.rawNode);
}
C.add.apply(this, arguments);
}
return this; // self
},
remove: function(shape, silently){
// summary: remove a shape from a group/surface
// shape: dojox.gfx.Shape: an VML shape object
// silently: Boolean?: if true, regenerate a picture
if(this == shape.getParent()){
if(this.rawNode == shape.rawNode.parentNode){
this.rawNode.removeChild(shape.rawNode);
}
if(this.fragment && this.fragment == shape.rawNode.parentNode){
this.fragment.removeChild(shape.rawNode);
}
C.remove.apply(this, arguments);
}
return this; // self
},
clear: function(){
// summary: removes all shapes from a group/surface
var r = this.rawNode;
while(r.lastChild){
r.removeChild(r.lastChild);
}
var defNode = this.defNode;
if(defNode){
while(defNode.lastChild){
defNode.removeChild(defNode.lastChild);
}
r.appendChild(defNode);
}
return C.clear.apply(this, arguments);
},
_moveChildToFront: C._moveChildToFront,
_moveChildToBack: C._moveChildToBack
};
var Creator = {
// summary: SVG shape creators
createObject: function(shapeType, rawShape){
// summary: creates an instance of the passed shapeType class
// shapeType: Function: a class constructor to create an instance of
// rawShape: Object: properties to be passed in to the classes "setShape" method
if(!this.rawNode){ return null; }
var shape = new shapeType(),
node = _createElementNS(svg.xmlns.svg, shapeType.nodeType);
shape.setRawNode(node);
shape.setShape(rawShape);
// rawNode.appendChild() will be done inside this.add(shape) below
this.add(shape);
return shape; // dojox.gfx.Shape
}
};
d.extend(svg.Text, Font);
d.extend(svg.TextPath, Font);
d.extend(svg.Group, Container);
d.extend(svg.Group, gs.Creator);
d.extend(svg.Group, Creator);
d.extend(svg.Surface, Container);
d.extend(svg.Surface, gs.Creator);
d.extend(svg.Surface, Creator);
// some specific override for svgweb + flash
if(svg.useSvgWeb){
// override createSurface()
svg.createSurface = function(parentNode, width, height){
var s = new svg.Surface();
// ensure width / height
if(!width || !height){
var pos = d.position(parentNode);
width = width || pos.w;
height = height || pos.h;
}
// ensure id
parentNode = d.byId(parentNode);
var id = parentNode.id ? parentNode.id+'_svgweb' : g._base._getUniqueId();
// create dynamic svg root
var mockSvg = _createElementNS(svg.xmlns.svg, 'svg');
mockSvg.id = id;
mockSvg.setAttribute('width', width);
mockSvg.setAttribute('height', height);
svgweb.appendChild(mockSvg, parentNode);
// notice: any call to the raw node before flash init will fail.
mockSvg.addEventListener('SVGLoad', function(){
// become loaded
s.rawNode = this;
s.isLoaded = true;
// init defs
var defNode = _createElementNS(svg.xmlns.svg, "defs");
s.rawNode.appendChild(defNode);
s.defNode = defNode;
// notify application
if (s.onLoad)
s.onLoad(s);
}, false);
// flash not loaded yet
s.isLoaded = false;
return s;
};
// override Surface.destroy()
svg.Surface.extend({
destroy: function(){
var mockSvg = this.rawNode;
svgweb.removeChild(mockSvg, mockSvg.parentNode);
}
});
// override connect() & disconnect() for Shape & Surface event processing
var _eventsProcessing = {
connect: function(name, object, method){
// connect events using the mock addEventListener() provided by svgweb
if (name.substring(0, 2)==='on') { name = name.substring(2); }
if (arguments.length == 2) {
method = object;
} else {
method = d.hitch(object, method);
}
this.getEventSource().addEventListener(name, method, false);
return [this, name, method];
},
disconnect: function(token){
// disconnect events using the mock removeEventListener() provided by svgweb
this.getEventSource().removeEventListener(token[1], token[2], false);
delete token[0];
}
};
dojo.extend(svg.Shape, _eventsProcessing);
dojo.extend(svg.Surface, _eventsProcessing);
}
// see if we are required to initilize
if(g.loadAndSwitch === "svg"){
g.switchTo("svg");
delete g.loadAndSwitch;
}
})();
}