Subversion Repositories Applications.papyrus

if(!dojo._hasResource["dojox.charting.plot2d.Pie"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.

dojo._hasResource["dojox.charting.plot2d.Pie"] = true;

dojo.provide("dojox.charting.plot2d.Pie");

dojo.require("dojox.charting.Element");

dojo.require("dojox.charting.axis2d.common");

dojo.require("dojox.charting.plot2d.common");

dojo.require("dojox.lang.functional");

dojo.require("dojox.gfx");

(function(){

	var df = dojox.lang.functional, du = dojox.lang.utils,

		dc = dojox.charting.plot2d.common,

		da = dojox.charting.axis2d.common,

		g = dojox.gfx,

		labelFudgeFactor = 0.8;		// in percents (to convert font's heigth to label width)

	dojo.declare("dojox.charting.plot2d.Pie", dojox.charting.Element, {

		defaultParams: {

			labels:			true,

			ticks:			false,

			fixed:			true,

			precision:		1,

			labelOffset:	20,

			labelStyle:		"default",	// default/rows/auto

			htmlLabels:		true		// use HTML to draw labels

		},

		optionalParams: {

			font:		"",

			fontColor:	"",

			radius:		0

		},

		constructor: function(chart, kwArgs){

			this.opt = dojo.clone(this.defaultParams);

			du.updateWithObject(this.opt, kwArgs);

			du.updateWithPattern(this.opt, kwArgs, this.optionalParams);

			this.run = null;

			this.dyn = [];

		},

		clear: function(){

			this.dirty = true;

			this.dyn = [];

			return this;

		},

		setAxis: function(axis){

			// nothing

			return this;

		},

		addSeries: function(run){

			this.run = run;

			return this;

		},

		calculateAxes: function(dim){

			// nothing

			return this;

		},

		getRequiredColors: function(){

			return this.run ? this.run.data.length : 0;

		},

		render: function(dim, offsets){

			if(!this.dirty){ return this; }

			this.dirty = false;

			this.cleanGroup();

			var s = this.group, color, t = this.chart.theme;

			// calculate the geometry

			var rx = (dim.width  - offsets.l - offsets.r) / 2,

				ry = (dim.height - offsets.t - offsets.b) / 2,

				r  = Math.min(rx, ry),

				taFont = "font" in this.opt ? this.opt.font : t.axis.font,

				taFontColor = "fontColor" in this.opt ? this.opt.fontColor : t.axis.fontColor,

				sum = df.foldl1(this.run.data, "+"), start = 0, step,

				slices = dojo.map(this.run.data, function(x){ return x / sum; }),

				shift, size, labelR;

			if(this.opt.labels){

				var labels = dojo.map(slices, function(x){

					return this._getLabel(x * 100) + "%";

				}, this);

				shift = df.foldl1(dojo.map(labels, df.pluck("length")), "x, y -> Math.max(x, y)");

				size = taFont ? g.normalizedLength(g.splitFontString(taFont).size) : 0;

				shift = Math.max(shift * labelFudgeFactor, 1) / 2 * size;

				if(this.opt.labelOffset < 0){

					r = Math.min(rx - 2 * shift, ry - size) + this.opt.labelOffset;

				}

				labelR = r - this.opt.labelOffset;

			}

			if("radius" in this.opt){

				r = this.opt.radius;

				labelR = r - this.opt.labelOffset;

			}

			var	circle = {

					cx: offsets.l + rx,

					cy: offsets.t + ry,

					r:  r

				};

			this.dyn = [];

			if(!this.run || !this.run.data.length){

				return this;

			}

			if(this.run.data.length == 1){

				// need autogenerated color

				color = new dojo.Color(t.next("color"));

				var shape = s.createCircle(circle).

						setFill(dc.augmentFill(t.run.fill, color)).

						setStroke(dc.augmentStroke(t.series.stroke, color));

				this.dyn.push({color: color, fill: shape.getFill(), stroke: shape.getStroke()});

				if(this.opt.labels){

					var shift = 4,

						taFont = "font" in this.opt ? this.opt.font : t.axis.font,

						taFontColor = "fontColor" in this.opt ? this.opt.fontColor : t.axis.fontColor,

						size = taFont ? g.normalizedLength(g.splitFontString(taFont).size) : 0;

					shift = Math.max(shift * labelFudgeFactor, 1) / 2 * size;

					// draw the label

					var elem = da.createText[this.opt.htmlLabels ? "html" : "gfx"]

									(this.chart, s, circle.cx, circle.cy + size / 2, "middle",

										"100%", taFont, taFontColor);

					if(this.opt.htmlLabels){ this.htmlElements.push(elem); }

				}

				return this;

			}

			// draw slices

			dojo.forEach(slices, function(x, i){

				// calculate the geometry of the slice

				var end = start + x * 2 * Math.PI;

				if(i + 1 == slices.length){

					end = 2 * Math.PI;

				}

				var	step = end - start,

					x1 = circle.cx + r * Math.cos(start),

					y1 = circle.cy + r * Math.sin(start),

					x2 = circle.cx + r * Math.cos(end),

					y2 = circle.cy + r * Math.sin(end);

				// draw the slice

				color = new dojo.Color(t.next("color"));

				var shape = s.createPath({}).

						moveTo(circle.cx, circle.cy).

						lineTo(x1, y1).

						arcTo(r, r, 0, step > Math.PI, true, x2, y2).

						lineTo(circle.cx, circle.cy).

						closePath().

						setFill(dc.augmentFill(t.series.fill, color)).

						setStroke(dc.augmentStroke(t.series.stroke, color));

				this.dyn.push({color: color, fill: shape.getFill(), stroke: shape.getStroke()});

				start = end;

			}, this);

			// draw labels

			if(this.opt.labels){

				start = 0;

				dojo.forEach(slices, function(x, i){

					// calculate the geometry of the slice

					var end = start + x * 2 * Math.PI;

					if(i + 1 == slices.length){

						end = 2 * Math.PI;

					}

					var	labelAngle = (start + end) / 2,

						x = circle.cx + labelR * Math.cos(labelAngle),

						y = circle.cy + labelR * Math.sin(labelAngle) + size / 2;

					// draw the label

					var elem = da.createText[this.opt.htmlLabels ? "html" : "gfx"]

									(this.chart, s, x, y, "middle",

										labels[i], taFont, taFontColor);

					if(this.opt.htmlLabels){ this.htmlElements.push(elem); }

					start = end;

				}, this);

			}

			return this;

		},

		// utilities

		_getLabel: function(number){

			return this.opt.fixed ? number.toFixed(this.opt.precision) : number.toString();

		}

	});

})();

}