2 * g.Raphael 0.5 - Charting library, based on Raphaƫl
4 * Copyright (c) 2009 Dmitry Baranovskiy (http://g.raphaeljs.com)
5 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) license.
7 Raphael = typeof(Raphael) != 'undefined' ? Raphael : (imports ? imports.seed.Raphael.Raphael : {});
8 Roo = typeof(Roo) != 'undefined' ? Roo: (imports ? imports.seed.Roo.Roo: {});
9 //chartinst = typeof(chartinst) != 'undefined' ? chartinst: (imports ? imports.chartinst.chartinst : {});
16 * @param {Raphael} paper to draw on
17 * @param {int} cx - centre X
18 * @param {int} cy - centre Y
19 * @param {int} r - radius
20 * @param {Array} values
21 * @param {Object} opts options
22 * cut : after this meany items - do not show a pie element?
26 function Circularchart(paper, cx, cy, r, values, opts) {
45 paper.customAttributes.circularPath = function (cx, cy, value, maxvalue, maxangle, color, R) {
46 var alpha = maxangle / maxvalue * value,
47 a = (90 - alpha) * Math.PI / 180,
48 x = cx + R * Math.cos(a),
49 y = cy - R * Math.sin(a),
52 path = [["M", cx, cy - R], ["A", R, R, 0, +(alpha > 180), 1, x, y]];
54 return {path: path, stroke: color};
57 if (!paper.raphael.is(values, "array")) {
61 var chart = paper.set(),
64 maxangle = opts.maxangle || 270,
69 var barwidth = opts.barwidth || Math.min(Math.floor(r / cut), 12);
72 colors = colors.slice(8 - len);
81 for (var i = 0; i < len; i++){
83 maxvalue = (maxvalue > values[i]) ? maxvalue : values[i];
92 valueOf: function () { return this.value; }
97 tempVal[cut].value += values[i] * 1;
98 tempVal[cut].others = true;
106 values.sort(function (a, b) {
107 return b.value - a.value;
113 for (var i = 0; i < len; i++){
115 var p = paper.path().attr({
117 "stroke-width": barwidth,
118 "stroke-linecap": "round",
119 "stroke-linejoin": "round"
121 }).attr({circularPath: [cx, cy, values[i], maxvalue, maxangle, colors[i] || chartinst.colors[i], rr]});
123 var alpha = 90 * Math.PI / 180,
124 startX = cx + rr * Math.cos(alpha),
125 startY = cy - rr * Math.sin(alpha),
126 circleWidth = Math.max(Math.floor(barwidth / 2 - 1), 1);
128 paper.circle(startX, startY, circleWidth).attr({stroke: "none", fill: "#fff"});
136 paper.text(cx - r + 20, cy + r + 30, (opts.totalmsg || 'Total:') + ' ' + total ).attr(opts.txtattr || chartinst.txtattr).attr({ fill: "#000", "text-anchor": "start"});
138 var legend = function (labels, otherslabel, mark) {
139 var x = cx + r + r / 3,
141 labels = labels || [];
143 mark = paper[mark && mark.toLowerCase()] || "circle";
145 for (var i = 0; i < len; i++) {
146 var j = values[i].order,
149 if(values[i].others){
153 paper[mark](x + 5, y, 5).attr({ fill: colors[i] || chartinst.colors[i], stroke: "none" })
154 txt = paper.text(x + 20, y, labels[j] || values[i]).attr(opts.txtattr || chartinst.txtattr).attr({ fill: opts.legendcolor || "#000", "text-anchor": "start"})
156 y += txt.getBBox().height * 1.2;
159 for (var i = 0; i < len; i++) {
160 var j = values[i].order,
163 if(!values[i].others){
167 paper[mark](x + 5, y, 5).attr({ fill: colors[i] || chartinst.colors[i], stroke: "none" })
168 txt = paper.text(x + 20, y, otherslabel || 'Others').attr(opts.txtattr || chartinst.txtattr).attr({ fill: opts.legendcolor || "#000", "text-anchor": "start"})
170 y += txt.getBBox().height * 1.2;
176 legend(opts.legend, opts.legendothers, opts.legendmark);
179 chart.sectors = sectors;
187 var F = function() {};
188 F.prototype = Raphael.g;
189 Circularchart.prototype = new F;
192 Raphael.fn.circularchart = function(cx, cy, r, values, opts) {
193 return new Circularchart(this, cx, cy, r, values, opts);