225 lines
7.2 KiB
JavaScript
225 lines
7.2 KiB
JavaScript
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dojo.require("dojox.gfx.svg");
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dojo.experimental("dojox.gfx.svg_attach");
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(function(){
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dojox.gfx.attachNode = function(node){
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// summary: creates a shape from a Node
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// node: Node: an SVG node
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if(!node) return null;
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var s = null;
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switch(node.tagName.toLowerCase()){
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case dojox.gfx.Rect.nodeType:
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s = new dojox.gfx.Rect(node);
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attachRect(s);
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break;
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case dojox.gfx.Ellipse.nodeType:
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s = new dojox.gfx.Ellipse(node);
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attachShape(s, dojox.gfx.defaultEllipse);
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break;
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case dojox.gfx.Polyline.nodeType:
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s = new dojox.gfx.Polyline(node);
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attachShape(s, dojox.gfx.defaultPolyline);
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break;
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case dojox.gfx.Path.nodeType:
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s = new dojox.gfx.Path(node);
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attachShape(s, dojox.gfx.defaultPath);
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break;
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case dojox.gfx.Circle.nodeType:
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s = new dojox.gfx.Circle(node);
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attachShape(s, dojox.gfx.defaultCircle);
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break;
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case dojox.gfx.Line.nodeType:
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s = new dojox.gfx.Line(node);
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attachShape(s, dojox.gfx.defaultLine);
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break;
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case dojox.gfx.Image.nodeType:
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s = new dojox.gfx.Image(node);
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attachShape(s, dojox.gfx.defaultImage);
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break;
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case dojox.gfx.Text.nodeType:
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var t = node.getElementsByTagName("textPath");
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if(t && t.length){
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s = new dojox.gfx.TextPath(node);
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attachShape(s, dojox.gfx.defaultPath);
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attachTextPath(s);
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}else{
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s = new dojox.gfx.Text(node);
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attachText(s);
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}
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attachFont(s);
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break;
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default:
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//console.debug("FATAL ERROR! tagName = " + node.tagName);
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return null;
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}
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if(!(s instanceof dojox.gfx.Image)){
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attachFill(s);
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attachStroke(s);
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}
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attachTransform(s);
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return s; // dojox.gfx.Shape
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};
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dojox.gfx.attachSurface = function(node){
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// summary: creates a surface from a Node
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// node: Node: an SVG node
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var s = new dojox.gfx.Surface();
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s.rawNode = node;
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var def_elems = node.getElementsByTagName("defs");
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if(def_elems.length == 0){
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return null; // dojox.gfx.Surface
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}
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s.defNode = def_elems[0];
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return s; // dojox.gfx.Surface
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};
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var attachFill = function(object){
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// summary: deduces a fill style from a node.
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// object: dojox.gfx.Shape: an SVG shape
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var fill = object.rawNode.getAttribute("fill");
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if(fill == "none"){
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object.fillStyle = null;
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return;
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}
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var fillStyle = null, gradient = dojox.gfx.svg.getRef(fill);
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if(gradient){
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switch(gradient.tagName.toLowerCase()){
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case "lineargradient":
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fillStyle = _getGradient(dojox.gfx.defaultLinearGradient, gradient);
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dojo.forEach(["x1", "y1", "x2", "y2"], function(x){
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fillStyle[x] = gradient.getAttribute(x);
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});
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break;
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case "radialgradient":
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fillStyle = _getGradient(dojox.gfx.defaultRadialGradient, gradient);
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dojo.forEach(["cx", "cy", "r"], function(x){
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fillStyle[x] = gradient.getAttribute(x);
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});
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fillStyle.cx = gradient.getAttribute("cx");
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fillStyle.cy = gradient.getAttribute("cy");
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fillStyle.r = gradient.getAttribute("r");
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break;
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case "pattern":
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fillStyle = dojo.lang.shallowCopy(dojox.gfx.defaultPattern, true);
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dojo.forEach(["x", "y", "width", "height"], function(x){
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fillStyle[x] = gradient.getAttribute(x);
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});
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fillStyle.src = gradient.firstChild.getAttributeNS(dojox.gfx.svg.xmlns.xlink, "href");
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break;
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}
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}else{
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fillStyle = new dojo.Color(fill);
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var opacity = object.rawNode.getAttribute("fill-opacity");
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if(opacity != null){ fillStyle.a = opacity; }
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}
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object.fillStyle = fillStyle;
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};
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var _getGradient = function(defaultGradient, gradient){
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var fillStyle = dojo.clone(defaultGradient);
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fillStyle.colors = [];
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for(var i = 0; i < gradient.childNodes.length; ++i){
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fillStyle.colors.push({
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offset: gradient.childNodes[i].getAttribute("offset"),
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color: new dojo.Color(gradient.childNodes[i].getAttribute("stop-color"))
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});
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}
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return fillStyle;
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};
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var attachStroke = function(object){
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// summary: deduces a stroke style from a node.
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// object: dojox.gfx.Shape: an SVG shape
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var rawNode = object.rawNode, stroke = rawNode.getAttribute("stroke");
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if(stroke == null || stroke == "none"){
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object.strokeStyle = null;
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return;
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}
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var strokeStyle = object.strokeStyle = dojo.clone(dojox.gfx.defaultStroke);
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var color = new dojo.Color(stroke);
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if(color){
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strokeStyle.color = color;
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strokeStyle.color.a = rawNode.getAttribute("stroke-opacity");
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strokeStyle.width = rawNode.getAttribute("stroke-width");
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strokeStyle.cap = rawNode.getAttribute("stroke-linecap");
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strokeStyle.join = rawNode.getAttribute("stroke-linejoin");
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if(strokeStyle.join == "miter"){
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strokeStyle.join = rawNode.getAttribute("stroke-miterlimit");
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}
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strokeStyle.style = rawNode.getAttribute("dojoGfxStrokeStyle");
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}
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};
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var attachTransform = function(object){
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// summary: deduces a transformation matrix from a node.
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// object: dojox.gfx.Shape: an SVG shape
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var matrix = object.rawNode.getAttribute("transform");
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if(matrix.match(/^matrix\(.+\)$/)){
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var t = matrix.slice(7, -1).split(",");
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object.matrix = dojox.gfx.matrix.normalize({
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xx: parseFloat(t[0]), xy: parseFloat(t[2]),
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yx: parseFloat(t[1]), yy: parseFloat(t[3]),
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dx: parseFloat(t[4]), dy: parseFloat(t[5])
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});
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}else{
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object.matrix = null;
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}
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};
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var attachFont = function(object){
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// summary: deduces a font style from a Node.
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// object: dojox.gfx.Shape: an SVG shape
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var fontStyle = object.fontStyle = dojo.clone(dojox.gfx.defaultFont),
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r = object.rawNode;
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fontStyle.style = r.getAttribute("font-style");
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fontStyle.variant = r.getAttribute("font-variant");
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fontStyle.weight = r.getAttribute("font-weight");
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fontStyle.size = r.getAttribute("font-size");
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fontStyle.family = r.getAttribute("font-family");
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};
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var attachShape = function(object, def){
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// summary: builds a shape from a node.
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// object: dojox.gfx.Shape: an SVG shape
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// def: Object: a default shape template
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var shape = object.shape = dojo.clone(def), r = object.rawNode;
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for(var i in shape) {
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shape[i] = r.getAttribute(i);
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}
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};
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var attachRect = function(object){
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// summary: builds a rectangle shape from a node.
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// object: dojox.gfx.Shape: an SVG shape
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attachShape(object, dojox.gfx.defaultRect);
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object.shape.r = Math.min(object.rawNode.getAttribute("rx"), object.rawNode.getAttribute("ry"));
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};
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var attachText = function(object){
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// summary: builds a text shape from a node.
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// object: dojox.gfx.Shape: an SVG shape
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var shape = object.shape = dojo.clone(dojox.gfx.defaultText),
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r = object.rawNode;
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shape.x = r.getAttribute("x");
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shape.y = r.getAttribute("y");
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shape.align = r.getAttribute("text-anchor");
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shape.decoration = r.getAttribute("text-decoration");
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shape.rotated = parseFloat(r.getAttribute("rotate")) != 0;
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shape.kerning = r.getAttribute("kerning") == "auto";
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shape.text = r.firstChild.nodeValue;
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};
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var attachTextPath = function(object){
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// summary: builds a textpath shape from a node.
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// object: dojox.gfx.Shape: an SVG shape
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var shape = object.shape = dojo.clone(dojox.gfx.defaultTextPath),
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r = object.rawNode;
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shape.align = r.getAttribute("text-anchor");
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shape.decoration = r.getAttribute("text-decoration");
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shape.rotated = parseFloat(r.getAttribute("rotate")) != 0;
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shape.kerning = r.getAttribute("kerning") == "auto";
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shape.text = r.firstChild.nodeValue;
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};
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})();
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