dojo.provide("dojo.gfx.vml");
dojo.require("dojo.dom");
dojo.require("dojo.math");
dojo.require("dojo.lang.declare");
dojo.require("dojo.lang.extras");
dojo.require("dojo.string.*");
dojo.require("dojo.html.metrics");
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.vml");
// dojo.gfx.vml.xmlns: String: a VML's namespace
dojo.gfx.vml.xmlns = "urn:schemas-microsoft-com:vml";
dojo.gfx.vml._parseFloat = function(str) {
// summary: a helper function to parse VML-specific floating-point values
// str: String: a representation of a floating-point number
return str.match(/^\d+f$/i) ? parseInt(str) / 65536 : parseFloat(str); // Number
};
// dojo.gfx.vml.cm_in_pt: Number: centimeters per inch
dojo.gfx.vml.cm_in_pt = 72 / 2.54;
// dojo.gfx.vml.mm_in_pt: Number: millimeters per inch
dojo.gfx.vml.mm_in_pt = 7.2 / 2.54;
dojo.gfx.vml.px_in_pt = function(){
// summary: returns a number of pixels per point
return dojo.html.getCachedFontMeasurements()["12pt"] / 12; // Number
};
dojo.gfx.vml.pt2px = function(len){
// summary: converts points to pixels
// len: Number: a value in points
return len * this.px_in_pt(); // Number
};
dojo.gfx.vml.px2pt = function(len){
// summary: converts pixels to points
// len: Number: a value in pixels
return len / this.px_in_pt(); // Number
};
dojo.gfx.vml.normalizedLength = function(len) {
// summary: converts any length value to points
// len: String: a length, e.g., "12pc"
if(len.length == 0) return 0;
if(len.length > 2){
var px_in_pt = this.px_in_pt();
var val = parseFloat(len);
switch(len.slice(-2)){
case "px": return val;
case "pt": return val * px_in_pt;
case "in": return val * 72 * px_in_pt;
case "pc": return val * 12 * px_in_pt;
case "mm": return val / this.mm_in_pt * px_in_pt;
case "cm": return val / this.cm_in_pt * px_in_pt;
}
}
return parseFloat(len); // Number
};
dojo.lang.extend(dojo.gfx.Shape, {
// summary: VML-specific implementation of dojo.gfx.Shape methods
setFill: function(fill){
// summary: sets a fill object (VML)
// 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.filled = false;
return this;
}
if(typeof(fill) == "object" && "type" in fill){
// gradient
switch(fill.type){
case "linear":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultLinearGradient, fill);
this.fillStyle = f;
var s = "";
for(var i = 0; i < f.colors.length; ++i){
f.colors[i].color = dojo.gfx.normalizeColor(f.colors[i].color);
s += f.colors[i].offset.toFixed(8) + " " + f.colors[i].color.toHex() + ";";
}
var fo = this.rawNode.fill;
fo.colors.value = s;
fo.method = "sigma";
fo.type = "gradient";
fo.angle = (dojo.math.radToDeg(Math.atan2(f.x2 - f.x1, f.y2 - f.y1)) + 180) % 360;
fo.on = true;
break;
case "radial":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultRadialGradient, fill);
this.fillStyle = f;
var w = parseFloat(this.rawNode.style.width);
var h = parseFloat(this.rawNode.style.height);
var c = isNaN(w) ? 1 : 2 * f.r / w;
var i = f.colors.length - 1;
f.colors[i].color = dojo.gfx.normalizeColor(f.colors[i].color);
var s = "0 " + f.colors[i].color.toHex();
for(; i >= 0; --i){
f.colors[i].color = dojo.gfx.normalizeColor(f.colors[i].color);
s += (1 - c * f.colors[i].offset).toFixed(8) + " " + f.colors[i].color.toHex() + ";";
}
var fo = this.rawNode.fill;
fo.colors.value = s;
fo.method = "sigma";
fo.type = "gradientradial";
if(isNaN(w) || isNaN(h)){
fo.focusposition = "0.5 0.5";
}else{
fo.focusposition = (f.cx / w).toFixed(8) + " " + (f.cy / h).toFixed(8);
}
fo.focussize = "0 0";
fo.on = true;
break;
case "pattern":
var f = dojo.gfx.makeParameters(dojo.gfx.defaultPattern, fill);
this.fillStyle = f;
var fo = this.rawNode.fill;
fo.type = "tile";
fo.src = f.src;
if(f.width && f.height){
// in points
fo.size.x = dojo.gfx.vml.px2pt(f.width);
fo.size.y = dojo.gfx.vml.px2pt(f.height);
}
fo.alignShape = false;
fo.position.x = 0;
fo.position.y = 0;
fo.origin.x = f.width ? f.x / f.width : 0;
fo.origin.y = f.height ? f.y / f.height : 0;
fo.on = true;
break;
}
this.rawNode.fill.opacity = 1;
return this;
}
// color object
this.fillStyle = dojo.gfx.normalizeColor(fill);
this.rawNode.fillcolor = this.fillStyle.toHex();
this.rawNode.fill.opacity = this.fillStyle.a;
this.rawNode.filled = true;
return this; // self
},
setStroke: function(stroke){
// summary: sets a stroke object (VML)
// stroke: Object: a stroke object
// (see dojo.gfx.defaultStroke)
if(!stroke){
// don't stroke
this.strokeStyle = null;
this.rawNode.stroked = false;
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;
this.rawNode.stroked = true;
this.rawNode.strokecolor = s.color.toCss();
this.rawNode.strokeweight = s.width + "px"; // TODO: should we assume that the width is always in pixels?
if(this.rawNode.stroke) {
this.rawNode.stroke.opacity = s.color.a;
this.rawNode.stroke.endcap = this._translate(this._capMap, s.cap);
if(typeof(s.join) == "number") {
this.rawNode.stroke.joinstyle = "miter";
this.rawNode.stroke.miterlimit = s.join;
}else{
this.rawNode.stroke.joinstyle = s.join;
// this.rawNode.stroke.miterlimit = s.width;
}
}
return this; // self
},
_capMap: { butt: 'flat' },
_capMapReversed: { flat: 'butt' },
_translate: function(dict, value) {
return (value in dict) ? dict[value] : value;
},
_applyTransform: function() {
var matrix = this._getRealMatrix();
if(!matrix) return this;
var skew = this.rawNode.skew;
if(typeof(skew) == "undefined"){
for(var i = 0; i < this.rawNode.childNodes.length; ++i){
if(this.rawNode.childNodes[i].tagName == "skew"){
skew = this.rawNode.childNodes[i];
break;
}
}
}
if(skew){
skew.on = false;
var mt = matrix.xx.toFixed(8) + " " + matrix.xy.toFixed(8) + " " +
matrix.yx.toFixed(8) + " " + matrix.yy.toFixed(8) + " 0 0";
var offset = Math.floor(matrix.dx).toFixed() + "px " + Math.floor(matrix.dy).toFixed() + "px";
var l = parseFloat(this.rawNode.style.left);
var t = parseFloat(this.rawNode.style.top);
var w = parseFloat(this.rawNode.style.width);
var h = parseFloat(this.rawNode.style.height);
if(isNaN(l)) l = 0;
if(isNaN(t)) t = 0;
if(isNaN(w)) w = 1;
if(isNaN(h)) h = 1;
var origin = (-l / w - 0.5).toFixed(8) + " " + (-t / h - 0.5).toFixed(8);
skew.matrix = mt;
skew.origin = origin;
skew.offset = offset;
skew.on = true;
}
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)
rawNode.stroked = false;
rawNode.filled = false;
this.rawNode = rawNode;
},
// Attach family
attachFill: function(rawNode){
// summary: deduces a fill style from a Node.
// rawNode: Node: an VML node
var fillStyle = null;
var fo = rawNode.fill;
if(rawNode) {
if(fo.on && fo.type == "gradient"){
var fillStyle = dojo.lang.shallowCopy(dojo.gfx.defaultLinearGradient, true);
var rad = dojo.math.degToRad(fo.angle);
fillStyle.x2 = Math.cos(rad);
fillStyle.y2 = Math.sin(rad);
fillStyle.colors = [];
var stops = fo.colors.value.split(";");
for(var i = 0; i < stops.length; ++i){
var t = stops[i].match(/\S+/g);
if(!t || t.length != 2) continue;
fillStyle.colors.push({offset: dojo.gfx.vml._parseFloat(t[0]), color: new dojo.gfx.color.Color(t[1])});
}
}else if(fo.on && fo.type == "gradientradial"){
var fillStyle = dojo.lang.shallowCopy(dojo.gfx.defaultRadialGradient, true);
var w = parseFloat(rawNode.style.width);
var h = parseFloat(rawNode.style.height);
fillStyle.cx = isNaN(w) ? 0 : fo.focusposition.x * w;
fillStyle.cy = isNaN(h) ? 0 : fo.focusposition.y * h;
fillStyle.r = isNaN(w) ? 1 : w / 2;
fillStyle.colors = [];
var stops = fo.colors.value.split(";");
for(var i = stops.length - 1; i >= 0; --i){
var t = stops[i].match(/\S+/g);
if(!t || t.length != 2) continue;
fillStyle.colors.push({offset: dojo.gfx.vml._parseFloat(t[0]), color: new dojo.gfx.color.Color(t[1])});
}
}else if(fo.on && fo.type == "tile"){
var fillStyle = dojo.lang.shallowCopy(dojo.gfx.defaultPattern, true);
fillStyle.width = dojo.gfx.vml.pt2px(fo.size.x); // from pt
fillStyle.height = dojo.gfx.vml.pt2px(fo.size.y); // from pt
fillStyle.x = fo.origin.x * fillStyle.width;
fillStyle.y = fo.origin.y * fillStyle.height;
fillStyle.src = fo.src;
}else if(fo.on && rawNode.fillcolor){
// a color object !
fillStyle = new dojo.gfx.color.Color(rawNode.fillcolor+"");
fillStyle.a = fo.opacity;
}
}
return fillStyle; // Object
},
attachStroke: function(rawNode) {
// summary: deduces a stroke style from a Node.
// rawNode: Node: an VML node
var strokeStyle = dojo.lang.shallowCopy(dojo.gfx.defaultStroke, true);
if(rawNode && rawNode.stroked){
strokeStyle.color = new dojo.gfx.color.Color(rawNode.strokecolor.value);
dojo.debug("We are expecting an .75pt here, instead of strokeweight = " + rawNode.strokeweight );
strokeStyle.width = dojo.gfx.vml.normalizedLength(rawNode.strokeweight+"");
strokeStyle.color.a = rawNode.stroke.opacity;
strokeStyle.cap = this._translate(this._capMapReversed, rawNode.stroke.endcap);
strokeStyle.join = rawNode.stroke.joinstyle == "miter" ? rawNode.stroke.miterlimit : rawNode.stroke.joinstyle;
}else{
return null;
}
return strokeStyle; // Object
},
attachTransform: function(rawNode) {
// summary: deduces a transformation matrix from a Node.
// rawNode: Node: an VML node
var matrix = {};
if(rawNode){
var s = rawNode.skew;
matrix.xx = s.matrix.xtox;
matrix.xy = s.matrix.ytox;
matrix.yx = s.matrix.xtoy;
matrix.yy = s.matrix.ytoy;
matrix.dx = dojo.gfx.vml.pt2px(s.offset.x);
matrix.dy = dojo.gfx.vml.pt2px(s.offset.y);
}
return dojo.gfx.matrix.normalize(matrix); // dojo.gfx.matrix.Matrix
},
attach: function(rawNode){
// summary: reconstructs all shape parameters from a Node.
// rawNode: Node: an VML node
if(rawNode){
this.rawNode = rawNode;
this.shape = this.attachShape(rawNode);
this.fillStyle = this.attachFill(rawNode);
this.strokeStyle = this.attachStroke(rawNode);
this.matrix = this.attachTransform(rawNode);
}
}
});
dojo.declare("dojo.gfx.Group", dojo.gfx.shape.VirtualGroup, {
// summary: a group shape (VML), which can be used
// to logically group shapes (e.g, to propagate matricies)
add: function(shape){
// summary: adds a shape to a group/surface
// shape: dojo.gfx.Shape: an VML shape object
if(this != shape.getParent()){
this.rawNode.appendChild(shape.rawNode);
dojo.gfx.Group.superclass.add.apply(this, arguments);
}
return this; // self
},
remove: function(shape, silently){
// summary: remove a shape from a group/surface
// shape: dojo.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);
}
dojo.gfx.Group.superclass.remove.apply(this, arguments);
}
return this; // self
},
attach: function(rawNode){
// summary: reconstructs all group shape parameters from a Node (VML).
// rawNode: Node: a node
if(rawNode){
this.rawNode = rawNode;
this.shape = null;
this.fillStyle = null;
this.strokeStyle = null;
this.matrix = null;
}
}
});
dojo.gfx.Group.nodeType = "group";
var zIndex = {
moveToFront: function(){
// summary: moves a shape to front of its parent's list of shapes (VML)
this.rawNode.parentNode.appendChild(this.rawNode);
return this;
},
moveToBack: function(){
// summary: moves a shape to back of its parent's list of shapes (VML)
this.rawNode.parentNode.insertBefore(this.rawNode, this.rawNode.parentNode.firstChild);
return this;
}
};
dojo.lang.extend(dojo.gfx.Shape, zIndex);
dojo.lang.extend(dojo.gfx.Group, zIndex);
delete zIndex;
dojo.declare("dojo.gfx.Rect", dojo.gfx.shape.Rect, {
// summary: a rectangle shape (VML)
attachShape: function(rawNode){
// summary: builds a rectangle shape from a Node.
// rawNode: Node: a VML node
// a workaround for the VML's arcsize bug: cannot read arcsize of an instantiated node
var arcsize = rawNode.outerHTML.match(/arcsize = \"(\d*\.?\d+[%f]?)\"/)[1];
arcsize = (arcsize.indexOf("%") >= 0) ? parseFloat(arcsize) / 100 : dojo.gfx.vml._parseFloat(arcsize);
var style = rawNode.style;
var width = parseFloat(style.width);
var height = parseFloat(style.height);
// make an object
var o = dojo.gfx.makeParameters(dojo.gfx.defaultRect, {
x: parseInt(style.left),
y: parseInt(style.top),
width: width,
height: height,
r: Math.min(width, height) * arcsize
});
return o; // dojo.gfx.shape.Rect
},
setShape: function(newShape){
// summary: sets a rectangle shape object (VML)
// newShape: Object: a rectangle shape object
var shape = this.shape = dojo.gfx.makeParameters(this.shape, newShape);
this.bbox = null;
var style = this.rawNode.style;
style.left = shape.x.toFixed();
style.top = shape.y.toFixed();
style.width = (typeof(shape.width) == "string" && shape.width.indexOf("%") >= 0) ? shape.width : shape.width.toFixed();
style.height = (typeof(shape.width) == "string" && shape.height.indexOf("%") >= 0) ? shape.height : shape.height.toFixed();
var r = Math.min(1, (shape.r / Math.min(parseFloat(shape.width), parseFloat(shape.height)))).toFixed(8);
// a workaround for the VML's arcsize bug: cannot read arcsize of an instantiated node
var parent = this.rawNode.parentNode;
var before = null;
if(parent){
if(parent.lastChild != this.rawNode){
for(var i = 0; i < parent.childNodes.length; ++i){
if(parent.childNodes[i] == this.rawNode){
before = parent.childNodes[i+1];
break;
}
}
}
parent.removeChild(this.rawNode);
}
this.rawNode.arcsize = r;
if(parent){
if(before){
parent.insertBefore(this.rawNode, before);
}else{
parent.appendChild(this.rawNode);
}
}
return this.setTransform(this.matrix); // self
}
});
dojo.gfx.Rect.nodeType = "roundrect"; // use a roundrect so the stroke join type is respected
dojo.declare("dojo.gfx.Ellipse", dojo.gfx.shape.Ellipse, {
// summary: an ellipse shape (VML)
attachShape: function(rawNode){
// summary: builds an ellipse shape from a Node.
// rawNode: Node: an VML node
var style = this.rawNode.style;
var rx = parseInt(style.width ) / 2;
var ry = parseInt(style.height) / 2;
var o = dojo.gfx.makeParameters(dojo.gfx.defaultEllipse, {
cx: parseInt(style.left) + rx,
cy: parseInt(style.top ) + ry,
rx: rx,
ry: ry
});
return o; // dojo.gfx.shape.Ellipse
},
setShape: function(newShape){
// summary: sets an ellipse shape object (VML)
// newShape: Object: an ellipse shape object
var shape = this.shape = dojo.gfx.makeParameters(this.shape, newShape);
this.bbox = null;
var style = this.rawNode.style;
style.left = (shape.cx - shape.rx).toFixed();
style.top = (shape.cy - shape.ry).toFixed();
style.width = (shape.rx * 2).toFixed();
style.height = (shape.ry * 2).toFixed();
return this.setTransform(this.matrix); // self
}
});
dojo.gfx.Ellipse.nodeType = "oval";
dojo.declare("dojo.gfx.Circle", dojo.gfx.shape.Circle, {
// summary: a circle shape (VML)
attachShape: function(rawNode){
// summary: builds a circle shape from a Node.
// rawNode: Node: an VML node
var style = this.rawNode.style;
var r = parseInt(style.width) / 2;
var o = dojo.gfx.makeParameters(dojo.gfx.defaultCircle, {
cx: parseInt(style.left) + r,
cy: parseInt(style.top) + r,
r: r
});
return o; // dojo.gfx.shape.Circle
},
setShape: function(newShape){
// summary: sets a circle shape object (VML)
// newShape: Object: a circle shape object
var shape = this.shape = dojo.gfx.makeParameters(this.shape, newShape);
this.bbox = null;
var style = this.rawNode.style;
style.left = (shape.cx - shape.r).toFixed();
style.top = (shape.cy - shape.r).toFixed();
style.width = (shape.r * 2).toFixed();
style.height = (shape.r * 2).toFixed();
return this; // self
}
});
dojo.gfx.Circle.nodeType = "oval";
dojo.declare("dojo.gfx.Line", dojo.gfx.shape.Line,
function(rawNode){
if(rawNode) rawNode.setAttribute("dojoGfxType", "line");
}, {
// summary: a line shape (VML)
attachShape: function(rawNode){
// summary: builds a line shape from a Node.
// rawNode: Node: an VML node
var p = rawNode.path.v.match(dojo.gfx.pathRegExp);
var shape = {};
do{
if(p.length < 7 || p[0] != "m" || p[3] != "l" || p[6] != "e") break;
shape.x1 = parseInt(p[1]);
shape.y1 = parseInt(p[2]);
shape.x2 = parseInt(p[4]);
shape.y2 = parseInt(p[5]);
}while(false);
return dojo.gfx.makeParameters(dojo.gfx.defaultLine, shape); // dojo.gfx.shape.Line
},
setShape: function(newShape){
// summary: sets a line shape object (VML)
// newShape: Object: a line shape object
var shape = this.shape = dojo.gfx.makeParameters(this.shape, newShape);
this.bbox = null;
this.rawNode.path.v = "m" + shape.x1.toFixed() + " " + shape.y1.toFixed() +
"l" + shape.x2.toFixed() + " " + shape.y2.toFixed() + "e";
return this.setTransform(this.matrix); // self
}
});
dojo.gfx.Line.nodeType = "shape";
dojo.declare("dojo.gfx.Polyline", dojo.gfx.shape.Polyline,
function(rawNode){
if(rawNode) rawNode.setAttribute("dojoGfxType", "polyline");
}, {
// summary: a polyline/polygon shape (VML)
attachShape: function(rawNode){
// summary: builds a polyline/polygon shape from a Node.
// rawNode: Node: an VML node
var shape = dojo.lang.shallowCopy(dojo.gfx.defaultPolyline, true);
var p = rawNode.path.v.match(dojo.gfx.pathRegExp);
do{
if(p.length < 3 || p[0] != "m") break;
var x = parseInt(p[0]);
var y = parseInt(p[1]);
if(isNaN(x) || isNaN(y)) break;
shape.points.push({x: x, y: y});
if(p.length < 6 || p[3] != "l") break;
for(var i = 4; i < p.length; i += 2){
x = parseInt(p[i]);
y = parseInt(p[i + 1]);
if(isNaN(x) || isNaN(y)) break;
shape.points.push({x: x, y: y});
}
}while(false);
return shape; // dojo.gfx.shape.Polyline
},
setShape: function(points, closed){
// summary: sets a polyline/polygon shape object (SVG)
// points: Object: a polyline/polygon shape object
// closed: Boolean?: if true, close the polyline explicitely
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.bbox = null;
var attr = [];
var p = this.shape.points;
if(p.length > 0){
attr.push("m");
attr.push(p[0].x.toFixed());
attr.push(p[0].y.toFixed());
if(p.length > 1){
attr.push("l");
for(var i = 1; i < p.length; ++i){
attr.push(p[i].x.toFixed());
attr.push(p[i].y.toFixed());
}
}
}
attr.push("e");
this.rawNode.path.v = attr.join(" ");
return this.setTransform(this.matrix); // self
}
});
dojo.gfx.Polyline.nodeType = "shape";
dojo.declare("dojo.gfx.Image", dojo.gfx.shape.Image, {
// summary: an image (VML)
getEventSource: function() {
// summary: returns a Node, which is used as
// a source of events for this shape
return this.rawNode ? this.rawNode.firstChild : null; // Node
},
attachShape: function(rawNode){
// summary: builds an image shape from a Node.
// rawNode: Node: an VML node
var shape = dojo.lang.shallowCopy(dojo.gfx.defaultImage, true);
shape.src = rawNode.firstChild.src;
return shape; // dojo.gfx.shape.Image
},
setShape: function(newShape){
// summary: sets an image shape object (VML)
// newShape: Object: an image shape object
var shape = this.shape = dojo.gfx.makeParameters(this.shape, newShape);
this.bbox = null;
var firstChild = this.rawNode.firstChild;
firstChild.src = shape.src;
if(shape.width || shape.height){
firstChild.style.width = shape.width;
firstChild.style.height = shape.height;
}
return this.setTransform(this.matrix); // 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;
},
attachTransform: function(rawNode) {
// summary: deduces a transformation matrix from a Node.
// rawNode: Node: an VML node
var matrix = {};
if(rawNode){
var m = rawNode.filters["DXImageTransform.Microsoft.Matrix"];
matrix.xx = m.M11;
matrix.xy = m.M12;
matrix.yx = m.M21;
matrix.yy = m.M22;
matrix.dx = m.Dx;
matrix.dy = m.Dy;
}
return dojo.gfx.matrix.normalize(matrix); // dojo.gfx.matrix.Matrix
},
_applyTransform: function() {
var matrix = this._getRealMatrix();
if(!matrix) return this;
with(this.rawNode.filters["DXImageTransform.Microsoft.Matrix"]){
M11 = matrix.xx;
M12 = matrix.xy;
M21 = matrix.yx;
M22 = matrix.yy;
Dx = matrix.dx;
Dy = matrix.dy;
}
return this;
}
});
dojo.gfx.Image.nodeType = "image";
dojo.gfx.path._calcArc = function(alpha){
var cosa = Math.cos(alpha);
var sina = Math.sin(alpha);
// return a start point, 1st and 2nd control points, and an end point
var p2 = {x: cosa + (4 / 3) * (1 - cosa), y: sina - (4 / 3) * cosa * (1 - cosa) / sina};
return {
s: {x: cosa, y: sina},
c1: p2,
c2: {x: p2.x, y: -p2.y},
e: {x: cosa, y: -sina}
};
};
dojo.declare("dojo.gfx.Path", dojo.gfx.path.Path,
function(rawNode){
if(rawNode) rawNode.setAttribute("dojoGfxType", "path");
this.vmlPath = "";
this.lastControl = {};
}, {
// summary: a path shape (VML)
_updateWithSegment: function(segment){
// summary: updates the bounding box of path with new segment
// segment: Object: a segment
var last = dojo.lang.shallowCopy(this.last);
dojo.gfx.Path.superclass._updateWithSegment.apply(this, arguments);
// add a VML path segment
var path = this[this.renderers[segment.action]](segment, last);
if(typeof(this.vmlPath) == "string"){
this.vmlPath += path.join("");
}else{
this.vmlPath = this.vmlPath.concat(path);
}
if(typeof(this.vmlPath) == "string"){
this.rawNode.path.v = this.vmlPath + " e";
}
},
attachShape: function(rawNode){
// summary: builds a path shape from a Node.
// rawNode: Node: an VML node
var shape = dojo.lang.shallowCopy(dojo.gfx.defaultPath, true);
var p = rawNode.path.v.match(dojo.gfx.pathRegExp);
var t = [], skip = false;
for(var i = 0; i < p.length; ++p){
var s = p[i];
if(s in this._pathVmlToSvgMap) {
skip = false;
t.push(this._pathVmlToSvgMap[s]);
} else if(!skip){
var n = parseInt(s);
if(isNaN(n)){
skip = true;
}else{
t.push(n);
}
}
}
if(t.length) shape.path = t.join(" ");
return shape; // dojo.gfx.path.Path
},
setShape: function(newShape){
// summary: forms a path using a shape (VML)
// newShape: Object: an VML path string or a path object (see dojo.gfx.defaultPath)
this.vmlPath = [];
this.lastControl = {};
dojo.gfx.Path.superclass.setShape.apply(this, arguments);
this.vmlPath = this.vmlPath.join("");
this.rawNode.path.v = this.vmlPath + " e";
return this;
},
_pathVmlToSvgMap: {m: "M", l: "L", t: "m", r: "l", c: "C", v: "c", qb: "Q", x: "z", e: ""},
// VML-specific segment renderers
renderers: {
M: "_moveToA", m: "_moveToR",
L: "_lineToA", l: "_lineToR",
H: "_hLineToA", h: "_hLineToR",
V: "_vLineToA", v: "_vLineToR",
C: "_curveToA", c: "_curveToR",
S: "_smoothCurveToA", s: "_smoothCurveToR",
Q: "_qCurveToA", q: "_qCurveToR",
T: "_qSmoothCurveToA", t: "_qSmoothCurveToR",
A: "_arcTo", a: "_arcTo",
Z: "_closePath", z: "_closePath"
},
_addArgs: function(path, args, from, upto){
if(typeof(upto) == "undefined"){
upto = args.length;
}
if(typeof(from) == "undefined"){
from = 0;
}
for(var i = from; i < upto; ++i){
path.push(" ");
path.push(args[i].toFixed());
}
},
_addArgsAdjusted: function(path, last, args, from, upto){
if(typeof(upto) == "undefined"){
upto = args.length;
}
if(typeof(from) == "undefined"){
from = 0;
}
for(var i = from; i < upto; i += 2){
path.push(" ");
path.push((last.x + args[i]).toFixed());
path.push(" ");
path.push((last.y + args[i + 1]).toFixed());
}
},
_moveToA: function(segment){
var p = [" m"];
var n = segment.args;
var l = n.length;
if(l == 2){
this._addArgs(p, n);
}else{
this._addArgs(p, n, 0, 2);
p.push(" l");
this._addArgs(p, n, 2);
}
this.lastControl = {};
return p;
},
_moveToR: function(segment, last){
var p = ["x" in last ? " t" : " m"];
var n = segment.args;
var l = n.length;
if(l == 2){
this._addArgs(p, n);
}else{
this._addArgs(p, n, 0, 2);
p.push(" r");
this._addArgs(p, n, 2);
}
this.lastControl = {};
return p;
},
_lineToA: function(segment){
var p = [" l"];
this._addArgs(p, segment.args);
this.lastControl = {};
return p;
},
_lineToR: function(segment){
var p = [" r"];
this._addArgs(p, segment.args);
this.lastControl = {};
return p;
},
_hLineToA: function(segment, last){
var p = [" l"];
var n = segment.args;
var l = n.length;
var y = " " + last.y.toFixed();
for(var i = 0; i < l; ++i){
p.push(" ");
p.push(n[i].toFixed());
p.push(y);
}
this.lastControl = {};
return p;
},
_hLineToR: function(segment){
var p = [" r"];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; ++i){
p.push(" ");
p.push(n[i].toFixed());
p.push(" 0");
}
this.lastControl = {};
return p;
},
_vLineToA: function(segment, last){
var p = [" l"];
var n = segment.args;
var l = n.length;
var x = " " + last.x.toFixed();
for(var i = 0; i < l; ++i){
p.push(x);
p.push(" ");
p.push(n[i].toFixed());
}
this.lastControl = {};
return p;
},
_vLineToR: function(segment){
var p = [" r"];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; ++i){
p.push(" 0 ");
p.push(n[i].toFixed());
}
this.lastControl = {};
return p;
},
_curveToA: function(segment){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 6){
p.push(" c");
this._addArgs(p, n, i, i + 6);
}
this.lastControl = {x: n[l - 4], y: n[l - 3], type: "C"};
return p;
},
_curveToR: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 6){
p.push(" v");
this._addArgs(p, n, i, i + 6);
this.lastControl = {x: last.x + n[i + 2], y: last.y + n[i + 3]};
last.x += n[i + 4];
last.y += n[i + 5];
}
this.lastControl.type = "C";
return p;
},
_smoothCurveToA: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 4){
p.push(" c");
if(this.lastControl.type == "C"){
this._addArgs(p, [
2 * last.x - this.lastControl.x,
2 * last.y - this.lastControl.y
]);
}else{
this._addArgs(p, [last.x, last.y]);
}
this._addArgs(p, n, i, i + 4);
}
this.lastControl = {x: n[l - 4], y: n[l - 3], type: "C"};
return p;
},
_smoothCurveToR: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 4){
p.push(" v");
if(this.lastControl.type == "C"){
this._addArgs(p, [
last.x - this.lastControl.x,
last.y - this.lastControl.y
]);
}else{
this._addArgs(p, [0, 0]);
}
this._addArgs(p, n, i, i + 4);
this.lastControl = {x: last.x + n[i], y: last.y + n[i + 1]};
last.x += n[i + 2];
last.y += n[i + 3];
}
this.lastControl.type = "C";
return p;
},
_qCurveToA: function(segment){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 4){
p.push(" qb");
this._addArgs(p, n, i, i + 4);
}
this.lastControl = {x: n[l - 4], y: n[l - 3], type: "Q"};
return p;
},
_qCurveToR: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 4){
p.push(" qb");
this._addArgsAdjusted(p, last, n, i, i + 4);
this.lastControl = {x: last.x + n[i], y: last.y + n[i + 1]};
last.x += n[i + 2];
last.y += n[i + 3];
}
this.lastControl.type = "Q";
return p;
},
_qSmoothCurveToA: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 2){
p.push(" qb");
if(this.lastControl.type == "Q"){
this._addArgs(p, [
this.lastControl.x = 2 * last.x - this.lastControl.x,
this.lastControl.y = 2 * last.y - this.lastControl.y
]);
}else{
this._addArgs(p, [
this.lastControl.x = last.x,
this.lastControl.y = last.y
]);
}
this._addArgs(p, n, i, i + 2);
}
this.lastControl.type = "Q";
return p;
},
_qSmoothCurveToR: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
for(var i = 0; i < l; i += 2){
p.push(" qb");
if(this.lastControl.type == "Q"){
this._addArgs(p, [
this.lastControl.x = 2 * last.x - this.lastControl.x,
this.lastControl.y = 2 * last.y - this.lastControl.y
]);
}else{
this._addArgs(p, [
this.lastControl.x = last.x,
this.lastControl.y = last.y
]);
}
this._addArgsAdjusted(p, last, n, i, i + 2);
}
this.lastControl.type = "Q";
return p;
},
_PI4: Math.PI / 4,
_curvePI4: dojo.gfx.path._calcArc(Math.PI / 8),
_calcArcTo: function(path, last, rx, ry, xRotg, large, cw, x, y){
var m = dojo.gfx.matrix;
// calculate parameters
var xRot = -dojo.math.degToRad(xRotg);
var rx2 = rx * rx;
var ry2 = ry * ry;
var pa = m.multiplyPoint(
m.rotate(-xRot),
{x: (last.x - x) / 2, y: (last.y - y) / 2}
);
var pax2 = pa.x * pa.x;
var pay2 = pa.y * pa.y;
var c1 = Math.sqrt((rx2 * ry2 - rx2 * pay2 - ry2 * pax2) / (rx2 * pay2 + ry2 * pax2));
var ca = {
x: c1 * rx * pa.y / ry,
y: -c1 * ry * pa.x / rx
};
if(large == cw){
ca = {x: -ca.x, y: -ca.y};
}
// our center
var c = m.multiplyPoint(
[
m.translate(
(last.x + x) / 2,
(last.y + y) / 2
),
m.rotate(xRot)
],
ca
);
// start of our arc
var startAngle = Math.atan2(c.y - last.y, last.x - c.x) - xRot;
var endAngle = Math.atan2(c.y - y, x - c.x) - xRot;
// size of our arc in radians
var theta = cw ? startAngle - endAngle : endAngle - startAngle;
if(theta < 0){
theta += this._2PI;
}else if(theta > this._2PI){
theta = this._2PI;
}
// calculate our elliptic transformation
var elliptic_transform = m.normalize([
m.translate(c.x, c.y),
m.rotate(xRot),
m.scale(rx, ry)
]);
// draw curve chunks
var alpha = this._PI4 / 2;
var curve = this._curvePI4;
var step = cw ? -alpha : alpha;
for(var angle = theta; angle > 0; angle -= this._PI4){
if(angle < this._PI4){
alpha = angle / 2;
curve = dojo.gfx.path._calcArc(alpha);
step = cw ? -alpha : alpha;
}
var c1, c2, e;
var M = m.normalize([elliptic_transform, m.rotate(startAngle + step)]);
if(cw){
c1 = m.multiplyPoint(M, curve.c2);
c2 = m.multiplyPoint(M, curve.c1);
e = m.multiplyPoint(M, curve.s );
}else{
c1 = m.multiplyPoint(M, curve.c1);
c2 = m.multiplyPoint(M, curve.c2);
e = m.multiplyPoint(M, curve.e );
}
// draw the curve
path.push(" c");
this._addArgs(path, [c1.x, c1.y, c2.x, c2.y, e.x, e.y]);
startAngle += 2 * step;
}
},
_arcTo: function(segment, last){
var p = [];
var n = segment.args;
var l = n.length;
var relative = segment.action == "a";
for(var i = 0; i < l; i += 7){
var x1 = n[i + 5];
var y1 = n[i + 6];
if(relative){
x1 += last.x;
y1 += last.y;
}
this._calcArcTo(
p, last, n[i], n[i + 1], n[i + 2],
n[i + 3] ? 1 : 0, n[i + 4] ? 1 : 0,
x1, y1
);
last = {x: x1, y: y1};
}
this.lastControl = {};
return p;
},
_closePath: function(){
this.lastControl = {};
return ["x"];
}
});
dojo.gfx.Path.nodeType = "shape";
dojo.gfx._creators = {
// summary: VML 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, true); // dojo.gfx.Path
},
createRect: function(rect){
// summary: creates an VML 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 VML 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 VML 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 VML line shape
// line: Object: a line object (see dojo.gfx.defaultLine)
return this.createObject(dojo.gfx.Line, line, true); // dojo.gfx.Line
},
createPolyline: function(points){
// summary: creates an VML polyline/polygon shape
// points: Object: a points object (see dojo.gfx.defaultPolyline)
// or an Array of points
return this.createObject(dojo.gfx.Polyline, points, true); // dojo.gfx.Polyline
},
createImage: function(image){
// summary: creates an VML image shape
// image: Object: an image object (see dojo.gfx.defaultImage)
if(!this.rawNode) return null;
var shape = new dojo.gfx.Image();
var node = document.createElement('div');
node.style.position = "relative";
node.style.width = this.rawNode.style.width;
node.style.height = this.rawNode.style.height;
node.style.filter = "progid:DXImageTransform.Microsoft.Matrix(M11=1, M12=0, M21=0, M22=1, Dx=0, Dy=0)";
var img = document.createElement('img');
node.appendChild(img);
shape.setRawNode(node);
this.rawNode.appendChild(node);
shape.setShape(image);
this.add(shape);
return shape; // dojo.gfx.Image
},
createGroup: function(){
// summary: creates an VML group shape
return this.createObject(dojo.gfx.Group, null, true); // dojo.gfx.Group
},
createObject: function(shapeType, rawShape, overrideSize) {
// 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.createElement('v:' + shapeType.nodeType);
shape.setRawNode(node);
this.rawNode.appendChild(node);
if(overrideSize) this._overrideSize(node);
shape.setShape(rawShape);
this.add(shape);
return shape; // dojo.gfx.Shape
},
_overrideSize: function(node){
node.style.width = this.rawNode.style.width;
node.style.height = this.rawNode.style.height;
node.coordsize = parseFloat(node.style.width) + " " + parseFloat(node.style.height);
}
};
dojo.lang.extend(dojo.gfx.Group, dojo.gfx._creators);
dojo.lang.extend(dojo.gfx.Surface, dojo.gfx._creators);
delete dojo.gfx._creators;
dojo.gfx.attachNode = function(node){
// summary: creates a shape from a Node
// node: Node: an VML 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 = (node.style.width == node.style.height)
? new dojo.gfx.Circle()
: new dojo.gfx.Ellipse();
break;
case dojo.gfx.Path.nodeType:
switch(node.getAttribute("dojoGfxType")){
case "line":
s = new dojo.gfx.Line();
break;
case "polyline":
s = new dojo.gfx.Polyline();
break;
case "path":
s = new dojo.gfx.Path();
break;
}
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 (VML)
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.style.width = width;
this.rawNode.style.height = height;
this.rawNode.coordsize = width + " " + height;
return this; // self
},
getDimensions: function(){
// summary: returns an object with properties "width" and "height"
return this.rawNode ? { width: this.rawNode.style.width, height: this.rawNode.style.height } : null; // Object
},
// group control
add: function(shape){
// summary: adds a shape to a group/surface
// shape: dojo.gfx.Shape: an VMLshape object
var oldParent = shape.getParent();
if(this != oldParent){
this.rawNode.appendChild(shape.rawNode);
if(oldParent){
oldParent.remove(shape, true);
}
shape._setParent(this, null);
}
return this; // self
},
remove: function(shape, silently){
// summary: remove a shape from a group/surface
// shape: dojo.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);
}
shape._setParent(null, null);
}
return this; // self
}
});
dojo.gfx.createSurface = function(parentNode, width, height){
// summary: creates a surface (VML)
// 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.createElement("v:group");
s.rawNode.style.width = width ? width : "100%";
s.rawNode.style.height = height ? height : "100%";
s.rawNode.coordsize = (width && height)
? (parseFloat(width) + " " + parseFloat(height))
: "100% 100%";
s.rawNode.coordorigin = "0 0";
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 VML node
var s = new dojo.gfx.Surface();
s.rawNode = node;
return s; // dojo.gfx.Surface
};