vml.js

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/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



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 = "urn:schemas-microsoft-com:vml";
dojo.gfx.vml._parseFloat = function (str) {
	return str.match(/^\d+f$/i) ? parseInt(str) / 65536 : parseFloat(str);
};
dojo.gfx.vml.cm_in_pt = 72 / 2.54;
dojo.gfx.vml.mm_in_pt = 7.2 / 2.54;
dojo.gfx.vml.px_in_pt = function () {
	return dojo.html.getCachedFontMeasurements()["12pt"] / 12;
};
dojo.gfx.vml.pt2px = function (len) {
	return len * this.px_in_pt();
};
dojo.gfx.vml.px2pt = function (len) {
	return len / this.px_in_pt();
};
dojo.gfx.vml.normalizedLength = function (len) {
	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);
};
dojo.lang.extend(dojo.gfx.Shape, {setFill:function (fill) {
	if (!fill) {
		this.fillStyle = null;
		this.rawNode.filled = false;
		return this;
	}
	if (typeof (fill) == "object" && "type" in fill) {
		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) {
				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;
	}
	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;
}, setStroke:function (stroke) {
	if (!stroke) {
		this.strokeStyle = null;
		this.rawNode.stroked = false;
		return this;
	}
	this.strokeStyle = dojo.gfx.makeParameters(dojo.gfx.defaultStroke, stroke);
	this.strokeStyle.color = dojo.gfx.normalizeColor(this.strokeStyle.color);
	var s = this.strokeStyle;
	this.rawNode.stroked = true;
	this.rawNode.strokecolor = s.color.toCss();
	this.rawNode.strokeweight = s.width + "px";
	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;
		}
	}
	return this;
}, _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) {
	rawNode.stroked = false;
	rawNode.filled = false;
	this.rawNode = rawNode;
}, attachFill:function (rawNode) {
	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);
					fillStyle.height = dojo.gfx.vml.pt2px(fo.size.y);
					fillStyle.x = fo.origin.x * fillStyle.width;
					fillStyle.y = fo.origin.y * fillStyle.height;
					fillStyle.src = fo.src;
				} else {
					if (fo.on && rawNode.fillcolor) {
						fillStyle = new dojo.gfx.color.Color(rawNode.fillcolor + "");
						fillStyle.a = fo.opacity;
					}
				}
			}
		}
	}
	return fillStyle;
}, attachStroke:function (rawNode) {
	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;
}, attachTransform:function (rawNode) {
	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);
}, attach:function (rawNode) {
	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, {add:function (shape) {
	if (this != shape.getParent()) {
		this.rawNode.appendChild(shape.rawNode);
		dojo.gfx.Group.superclass.add.apply(this, arguments);
	}
	return this;
}, remove:function (shape, silently) {
	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;
}, attach:function (rawNode) {
	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 () {
	this.rawNode.parentNode.appendChild(this.rawNode);
	return this;
}, moveToBack:function () {
	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, {attachShape:function (rawNode) {
	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);
	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;