dojo.provide("dojo.gfx.svg");
dojo.require("dojo.lang.declare");
dojo.require("dojo.svg");
dojo.require("dojo.gfx.color");
dojo.require("dojo.gfx.common");
dojo.require("dojo.gfx.shape");
dojo.require("dojo.gfx.path");
dojo.require("dojo.experimental");
dojo.experimental("dojo.gfx.svg");
dojo.gfx.svg.getRef = function(fill){
// summary: returns a DOM Node specified by the fill argument or null
// fill: String: an SVG fill
if(!fill || fill == "none") return null;
if(fill.match(/^url\(#.+\)$/)){
return dojo.byId(fill.slice(5, -1)); // Node
}
// Opera's bug: incorrect representation of a reference
if(dojo.render.html.opera && fill.match(/^#dj_unique_.+$/)){
// we assume here that a reference was generated by dojo.gfx
return dojo.byId(fill.slice(1)); // Node
}
return null; // Node
};
dojo.lang.extend(dojo.gfx.Shape, {
// summary: SVG-specific implementation of dojo.gfx.Shape methods
setFill: function(fill){
// summary: sets a fill object (SVG)
// fill: Object: a fill object
// (see dojo.gfx.defaultLinearGradient,
// dojo.gfx.defaultRadialGradient,
// dojo.gfx.defaultPattern,
// or dojo.gfx.color.Color)
if(!fill){
// don't fill
this.fillStyle = null;
this.rawNode.setAttribute("fill", "none");
this.rawNode.setAttribute("fill-opacity", 0);
return this;
}
if(typeof(fill) == "object" && "type" in fill){
// gradient
switch(fill.type){
case "linear":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultLinearGradient, fill);
var gradient = this._setFillObject(f, "linearGradient");
dojo.lang.forEach(["x1", "y1", "x2", "y2"], function(x){
gradient.setAttribute(x, f[x].toFixed(8));
});
break;
case "radial":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultRadialGradient, fill);
var gradient = this._setFillObject(f, "radialGradient");
dojo.lang.forEach(["cx", "cy", "r"], function(x){
gradient.setAttribute(x, f[x].toFixed(8));
});
break;
case "pattern":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultPattern, fill);
var pattern = this._setFillObject(f, "pattern");
dojo.lang.forEach(["x", "y", "width", "height"], function(x){
pattern.setAttribute(x, f[x].toFixed(8));
});
break;
}
return this;
}
// color object
var f = dojo.gfx.normalizeColor(fill);
this.fillStyle = f;
this.rawNode.setAttribute("fill", f.toCss());
this.rawNode.setAttribute("fill-opacity", f.a);
return this; // self
},
setStroke: function(stroke){
// summary: sets a stroke object (SVG)
// stroke: Object: a stroke object
// (see dojo.gfx.defaultStroke)
if(!stroke){
// don't stroke
this.strokeStyle = null;
this.rawNode.setAttribute("stroke", "none");
this.rawNode.setAttribute("stroke-opacity", 0);
return this;
}
// normalize the stroke
this.strokeStyle = dojo.gfx.makeParameters(dojo.gfx.defaultStroke, stroke);
this.strokeStyle.color = dojo.gfx.normalizeColor(this.strokeStyle.color);
// generate attributes
var s = this.strokeStyle;
var rn = this.rawNode;
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);
}
}
return this; // self
},
_setFillObject: function(f, nodeType){
var def_elems = this.rawNode.parentNode.getElementsByTagName("defs");
if(def_elems.length == 0){ return this; }
this.fillStyle = f;
var defs = def_elems[0];
var fill = this.rawNode.getAttribute("fill");
var ref = dojo.gfx.svg.getRef(fill);
if(ref){
fill = ref;
if(fill.tagName.toLowerCase() != nodeType.toLowerCase()){
var id = fill.id;
fill.parentNode.removeChild(fill);
fill = document.createElementNS(dojo.svg.xmlns.svg, nodeType);
fill.setAttribute("id", id);
defs.appendChild(fill);
}else{
while(fill.childNodes.length){
fill.removeChild(fill.lastChild);
}
}
}else{
fill = document.createElementNS(dojo.svg.xmlns.svg, nodeType);
fill.setAttribute("id", dojo.dom.getUniqueId());
defs.appendChild(fill);
}
if(nodeType == "pattern"){
fill.setAttribute("patternUnits", "userSpaceOnUse");
var img = document.createElementNS(dojo.svg.xmlns.svg, "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(dojo.svg.xmlns.xlink, "href", f.src);
fill.appendChild(img);
}else{
fill.setAttribute("gradientUnits", "userSpaceOnUse");
for(var i = 0; i < f.colors.length; ++i){
f.colors[i].color = dojo.gfx.normalizeColor(f.colors[i].color);
var t = document.createElementNS(dojo.svg.xmlns.svg, "stop");
t.setAttribute("offset", f.colors[i].offset.toFixed(8));
t.setAttribute("stop-color", f.colors[i].color.toCss());
fill.appendChild(t);
}
}
this.rawNode.setAttribute("fill", "url(/doc/j/jc/jcap/Dojo/common/041/lib/src/gfx/index.html) +")");
this.rawNode.removeAttribute("fill-opacity");
return fill;
},
_applyTransform: function() {
var matrix = this._getRealMatrix();
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)
with(rawNode){
setAttribute("fill", "none");
setAttribute("fill-opacity", 0);
setAttribute("stroke", "none");
setAttribute("stroke-opacity", 0);
setAttribute("stroke-width", 1);
setAttribute("stroke-linecap", "butt");
setAttribute("stroke-linejoin", "miter");
setAttribute("stroke-miterlimit", 4);
}
this.rawNode = rawNode;
},
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
},
setShape: function(newShape){
// summary: sets a shape object (SVG)
// newShape: Object: a shape object
// (see dojo.gfx.defaultPath,
// dojo.gfx.defaultPolyline,
// dojo.gfx.defaultRect,
// dojo.gfx.defaultEllipse,
// dojo.gfx.defaultCircle,
// dojo.gfx.defaultLine,
// or dojo.gfx.defaultImage)
this.shape = dojo.gfx.makeParameters(this.shape, newShape);
for(var i in this.shape){
if(i != "type"){ this.rawNode.setAttribute(i, this.shape[i]); }
}
return this; // self
},
attachFill: function(rawNode){
// summary: deduces a fill style from a Node.
// rawNode: Node: an SVG node
var fillStyle = null;
if(rawNode){
var fill = rawNode.getAttribute("fill");
if(fill == "none"){ return; }
var ref = dojo.gfx.svg.getRef(fill);
if(ref){
var gradient = ref;
switch(gradient.tagName.toLowerCase()){
case "lineargradient":
fillStyle = this._getGradient(dojo.gfx.defaultLinearGradient, gradient);
dojo.lang.forEach(["x1", "y1", "x2", "y2"], function(x){
fillStyle[x] = gradient.getAttribute(x);
});
break;
case "radialgradient":
fillStyle = this._getGradient(dojo.gfx.defaultRadialGradient, gradient);
dojo.lang.forEach(["cx", "cy", "r"], function(x){
fillStyle[x] = gradient.getAttribute(x);
});
fillStyle.cx = gradient.getAttribute("cx");
fillStyle.cy = gradient.getAttribute("cy");
fillStyle.r = gradient.getAttribute("r");
break;
case "pattern":
fillStyle = dojo.lang.shallowCopy(dojo.gfx.defaultPattern, true);
dojo.lang.forEach(["x", "y", "width", "height"], function(x){
fillStyle[x] = gradient.getAttribute(x);
});
fillStyle.src = gradient.firstChild.getAttributeNS(dojo.svg.xmlns.xlink, "href");
break;
}
}else{
fillStyle = new dojo.gfx.color.Color(fill);
var opacity = rawNode.getAttribute("fill-opacity");
if(opacity != null) fillStyle.a = opacity;
}
}
return fillStyle; // Object
},
_getGradient: function(defaultGradient, gradient){
var fillStyle = dojo.lang.shallowCopy(defaultGradient, true);
fillStyle.colors = [];
for(var i = 0; i < gradient.childNodes.length; ++i){
fillStyle.colors.push({
offset: gradient.childNodes[i].getAttribute("offset"),
color: new dojo.gfx.color.Color(gradient.childNodes[i].getAttribute("stop-color"))
});
}
return fillStyle;
},
attachStroke: function(rawNode){
// summary: deduces a stroke style from a Node.
// rawNode: Node: an SVG node
if(!rawNode){ return; }
var stroke = rawNode.getAttribute("stroke");
if(stroke == null || stroke == "none") return null;
var strokeStyle = dojo.lang.shallowCopy(dojo.gfx.defaultStroke, true);
var color = new dojo.gfx.color.Color(stroke);
if(color){
strokeStyle.color = color;
strokeStyle.color.a = rawNode.getAttribute("stroke-opacity");
strokeStyle.width = rawNode.getAttribute("stroke-width");
strokeStyle.cap = rawNode.getAttribute("stroke-linecap");
strokeStyle.join = rawNode.getAttribute("stroke-linejoin");
if(strokeStyle.join == "miter"){
strokeStyle.join = rawNode.getAttribute("stroke-miterlimit");
}
}
return strokeStyle; // Object
},
attachTransform: function(rawNode){
// summary: deduces a transformation matrix from a Node.
// rawNode: Node: an SVG node
var matrix = null;
if(rawNode){
matrix = rawNode.getAttribute("transform");
if(matrix.match(/^matrix\(.+\)$/)){
var t = matrix.slice(7, -1).split(",");
matrix = dojo.gfx.matrix.normalize({
xx: parseFloat(t[0]), xy: parseFloat(t[2]),
yx: parseFloat(t[1]), yy: parseFloat(t[3]),
dx: parseFloat(t[4]), dy: parseFloat(t[5])
});
}
}
return matrix; // dojo.gfx.matrix.Matrix
},
attachShape: function(rawNode){
// summary: builds a shape from a Node.
// rawNode: Node: an SVG node
var shape = null;
if(rawNode){
shape = dojo.lang.shallowCopy(this.shape, true);
for(var i in shape) {
shape[i] = rawNode.getAttribute(i);
}
}
return shape; // dojo.gfx.Shape
},
attach: function(rawNode){
// summary: reconstructs all shape parameters from a Node.
// rawNode: Node: an SVG node
if(rawNode) {
this.rawNode = rawNode;
this.fillStyle = this.attachFill(rawNode);
this.strokeStyle = this.attachStroke(rawNode);
this.matrix = this.attachTransform(rawNode);
this.shape = this.attachShape(rawNode);
}
}
});
dojo.declare("dojo.gfx.Group", dojo.gfx.Shape, {
// summary: a group shape (SVG), which can be used
// to logically group shapes (e.g, to propagate matricies)
setRawNode: function(rawNode){
// summary: sets a raw SVG node to be used by this shape
// rawNode: Node: an SVG node
this.rawNode = rawNode;
}
});
dojo.gfx.Group.nodeType = "g";
dojo.declare("dojo.gfx.Rect", dojo.gfx.shape.Rect, {
// summary: a rectangle shape (SVG)
attachShape: function(rawNode){
// summary: builds a rectangle shape from a Node.
// rawNode: Node: an SVG node
var shape = null;
if(rawNode){
shape = dojo.gfx.Rect.superclass.attachShape.apply(this, arguments);
shape.r = Math.min(rawNode.getAttribute("rx"), rawNode.getAttribute("ry"));
}
return shape; // dojo.gfx.shape.Rect
},
setShape: function(newShape){
// summary: sets a rectangle shape object (SVG)
// newShape: Object: a rectangle shape object
this.shape = dojo.gfx.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]); }
}
this.rawNode.setAttribute("rx", this.shape.r);
this.rawNode.setAttribute("ry", this.shape.r);
return this; // self
}
});
dojo.gfx.Rect.nodeType = "rect";
dojo.gfx.Ellipse = dojo.gfx.shape.Ellipse;
dojo.gfx.Ellipse.nodeType = "ellipse";
dojo.gfx.Circle = dojo.gfx.shape.Circle;
dojo.gfx.Circle.nodeType = "circle";
dojo.gfx.Line = dojo.gfx.shape.Line;
dojo.gfx.Line.nodeType = "line";
dojo.declare("dojo.gfx.Polyline", dojo.gfx.shape.Polyline, {
// summary: a polyline/polygon shape (SVG)
setShape: function(points){
// 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 = dojo.gfx.makeParameters(this.shape, { points: points });
if(closed && this.shape.points.length){
this.shape.points.push(this.shape.points[0]);
}
}else{
this.shape = dojo.gfx.makeParameters(this.shape, points);
}
this.box = null;
var attr = [];
var p = this.shape.points;
for(var i = 0; i < p.length; ++i){
attr.push(p[i].x.toFixed(8));
attr.push(p[i].y.toFixed(8));
}
this.rawNode.setAttribute("points", attr.join(" "));
return this; // self
}
});
dojo.gfx.Polyline.nodeType = "polyline";
dojo.declare("dojo.gfx.Image", dojo.gfx.shape.Image, {
// summary: an image (SVG)
setShape: function(newShape){
// summary: sets an image shape object (SVG)
// newShape: Object: an image shape object
this.shape = dojo.gfx.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.setAttributeNS(dojo.svg.xmlns.xlink, "href", this.shape.src);
return this; // self
},
setStroke: function(){
// summary: ignore setting a stroke style
return this; // self
},
setFill: function(){
// summary: ignore setting a fill style
return this; // self
},
attachStroke: function(rawNode){
// summary: ignore attaching a stroke style
return null;
},
attachFill: function(rawNode){
// summary: ignore attaching a fill style
return null;
}
});
dojo.gfx.Image.nodeType = "image";
dojo.declare("dojo.gfx.Path", dojo.gfx.path.Path, {
// summary: a path shape (SVG)
_updateWithSegment: function(segment){
// summary: updates the bounding box of path with new segment
// segment: Object: a segment
dojo.gfx.Path.superclass._updateWithSegment.apply(this, 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 dojo.gfx.defaultPath)
dojo.gfx.Path.superclass.setShape.apply(this, arguments);
this.rawNode.setAttribute("d", this.shape.path);
return this; // self
}
});
dojo.gfx.Path.nodeType = "path";
dojo.gfx._creators = {
// summary: SVG shape creators
createPath: function(path){
// summary: creates an SVG path shape
// path: Object: a path object (see dojo.gfx.defaultPath)
return this.createObject(dojo.gfx.Path, path); // dojo.gfx.Path
},
createRect: function(rect){
// summary: creates an SVG rectangle shape
// rect: Object: a path object (see dojo.gfx.defaultRect)
return this.createObject(dojo.gfx.Rect, rect); // dojo.gfx.Rect
},
createCircle: function(circle){
// summary: creates an SVG circle shape
// circle: Object: a circle object (see dojo.gfx.defaultCircle)
return this.createObject(dojo.gfx.Circle, circle); // dojo.gfx.Circle
},
createEllipse: function(ellipse){
// summary: creates an SVG ellipse shape
// ellipse: Object: an ellipse object (see dojo.gfx.defaultEllipse)
return this.createObject(dojo.gfx.Ellipse, ellipse); // dojo.gfx.Ellipse
},
createLine: function(line){
// summary: creates an SVG line shape
// line: Object: a line object (see dojo.gfx.defaultLine)
return this.createObject(dojo.gfx.Line, line); // dojo.gfx.Line
},
createPolyline: function(points){
// summary: creates an SVG polyline/polygon shape
// points: Object: a points object (see dojo.gfx.defaultPolyline)
// or an Array of points
return this.createObject(dojo.gfx.Polyline, points); // dojo.gfx.Polyline
},
createImage: function(image){
// summary: creates an SVG image shape
// image: Object: an image object (see dojo.gfx.defaultImage)
return this.createObject(dojo.gfx.Image, image); // dojo.gfx.Image
},
createGroup: function(){
// summary: creates an SVG group shape
return this.createObject(dojo.gfx.Group); // dojo.gfx.Group
},
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();
var node = document.createElementNS(dojo.svg.xmlns.svg, shapeType.nodeType);
shape.setRawNode(node);
this.rawNode.appendChild(node);
shape.setShape(rawShape);
this.add(shape);
return shape; // dojo.gfx.Shape
},
// group control
add: function(shape){
// summary: adds a shape to a group/surface
// shape: dojo.gfx.Shape: an SVG shape object
var oldParent = shape.getParent();
if(oldParent){
oldParent.remove(shape, true);
}
shape._setParent(this, null);
this.rawNode.appendChild(shape.rawNode);
return this; // self
},
remove: function(shape, silently){
// summary: remove a shape from a group/surface
// shape: dojo.gfx.Shape: an SVG shape object
// silently: Boolean?: if true, regenerate a picture
if(this.rawNode == shape.rawNode.parentNode){
this.rawNode.removeChild(shape.rawNode);
}
shape._setParent(null, null);
return this; // self
}
};
dojo.gfx.attachNode = function(node){
// summary: creates a shape from a Node
// node: Node: an SVG node
if(!node) return null;
var s = null;
switch(node.tagName.toLowerCase()){
case dojo.gfx.Rect.nodeType:
s = new dojo.gfx.Rect();
break;
case dojo.gfx.Ellipse.nodeType:
s = new dojo.gfx.Ellipse();
break;
case dojo.gfx.Polyline.nodeType:
s = new dojo.gfx.Polyline();
break;
case dojo.gfx.Path.nodeType:
s = new dojo.gfx.Path();
break;
case dojo.gfx.Circle.nodeType:
s = new dojo.gfx.Circle();
break;
case dojo.gfx.Line.nodeType:
s = new dojo.gfx.Line();
break;
case dojo.gfx.Image.nodeType:
s = new dojo.gfx.Image();
break;
default:
dojo.debug("FATAL ERROR! tagName = " + node.tagName);
}
s.attach(node);
return s; // dojo.gfx.Shape
};
dojo.lang.extend(dojo.gfx.Surface, {
// summary: a surface object to be used for drawings (SVG)
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"
return this.rawNode ? {width: this.rawNode.getAttribute("width"), height: this.rawNode.getAttribute("height")} : null; // Object
}
});
dojo.gfx.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 dojo.gfx.Surface();
s.rawNode = document.createElementNS(dojo.svg.xmlns.svg, "svg");
s.rawNode.setAttribute("width", width);
s.rawNode.setAttribute("height", height);
var defs = new dojo.gfx.svg.Defines();
var node = document.createElementNS(dojo.svg.xmlns.svg, dojo.gfx.svg.Defines.nodeType);
defs.setRawNode(node);
s.rawNode.appendChild(node);
dojo.byId(parentNode).appendChild(s.rawNode);
return s; // dojo.gfx.Surface
};
dojo.gfx.attachSurface = function(node){
// summary: creates a surface from a Node
// node: Node: an SVG node
var s = new dojo.gfx.Surface();
s.rawNode = node;
return s; // dojo.gfx.Surface
};
dojo.lang.extend(dojo.gfx.Group, dojo.gfx._creators);
dojo.lang.extend(dojo.gfx.Surface, dojo.gfx._creators);
delete dojo.gfx._creators;
// Gradient and pattern
dojo.gfx.svg.Defines = function(){
this.rawNode = null;
};
dojo.lang.extend(dojo.gfx.svg.Defines, {
setRawNode: function(rawNode){
this.rawNode = rawNode;
}
});
dojo.gfx.svg.Defines.nodeType = "defs";