// Generated by CoffeeScript 1.4.0 /* Easy pie chart is a jquery plugin to display simple animated pie charts for only one value Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. Built on top of the jQuery library (http://jquery.com) @source: http://github.com/rendro/easy-pie-chart/ @autor: Robert Fleischmann @version: 1.0.1 Inspired by: http://dribbble.com/shots/631074-Simple-Pie-Charts-II?list=popular&offset=210 Thanks to Philip Thrasher for the jquery plugin boilerplate for coffee script */ (function() { (function($) { $.easyPieChart = function(el, options) { var addScaleLine, animateLine, drawLine, easeInOutQuad, renderBackground, renderScale, renderTrack, _this = this; this.el = el; this.$el = $(el); this.$el.data("easyPieChart", this); this.init = function() { var percent; _this.options = $.extend({}, $.easyPieChart.defaultOptions, options); percent = parseInt(_this.$el.data('percent'), 10); _this.percentage = 0; _this.canvas = $("").get(0); _this.$el.append(_this.canvas); if (typeof G_vmlCanvasManager !== "undefined" && G_vmlCanvasManager !== null) { G_vmlCanvasManager.initElement(_this.canvas); } _this.ctx = _this.canvas.getContext('2d'); if (window.devicePixelRatio > 1.5) { $(_this.canvas).css({ width: _this.options.size, height: _this.options.size }); _this.canvas.width *= 2; _this.canvas.height *= 2; _this.ctx.scale(2, 2); } _this.ctx.translate(_this.options.size / 2, _this.options.size / 2); _this.$el.addClass('easyPieChart'); _this.$el.css({ width: _this.options.size, height: _this.options.size, lineHeight: "" + _this.options.size + "px" }); _this.update(percent); return _this; }; this.update = function(percent) { if (_this.options.animate === false) { return drawLine(percent); } else { return animateLine(_this.percentage, percent); } }; renderScale = function() { var i, _i, _results; _this.ctx.fillStyle = _this.options.scaleColor; _this.ctx.lineWidth = 1; _results = []; for (i = _i = 0; _i <= 24; i = ++_i) { _results.push(addScaleLine(i)); } return _results; }; addScaleLine = function(i) { var offset; offset = i % 6 === 0 ? 0 : _this.options.size * 0.017; _this.ctx.save(); _this.ctx.rotate(i * Math.PI / 12); _this.ctx.fillRect(_this.options.size / 2 - offset, 0, -_this.options.size * 0.05 + offset, 1); return _this.ctx.restore(); }; renderTrack = function() { var offset; offset = _this.options.size / 2 - _this.options.lineWidth / 2; if (_this.options.scaleColor !== false) { offset -= _this.options.size * 0.08; } _this.ctx.beginPath(); _this.ctx.arc(0, 0, offset, 0, Math.PI * 2, true); _this.ctx.closePath(); _this.ctx.strokeStyle = _this.options.trackColor; _this.ctx.lineWidth = _this.options.lineWidth; return _this.ctx.stroke(); }; renderBackground = function() { if (_this.options.scaleColor !== false) { renderScale(); } if (_this.options.trackColor !== false) { return renderTrack(); } }; drawLine = function(percent) { var offset; renderBackground(); _this.ctx.strokeStyle = $.isFunction(_this.options.barColor) ? _this.options.barColor(percent) : _this.options.barColor; _this.ctx.lineCap = _this.options.lineCap; _this.ctx.lineWidth = _this.options.lineWidth; offset = _this.options.size / 2 - _this.options.lineWidth / 2; if (_this.options.scaleColor !== false) { offset -= _this.options.size * 0.08; } _this.ctx.save(); _this.ctx.rotate(-Math.PI / 2); _this.ctx.beginPath(); _this.ctx.arc(0, 0, offset, 0, Math.PI * 2 * percent / 100, false); _this.ctx.stroke(); return _this.ctx.restore(); }; animateLine = function(from, to) { var currentStep, fps, steps; fps = 30; steps = fps * _this.options.animate / 1000; currentStep = 0; _this.options.onStart.call(_this); _this.percentage = to; if (_this.animation) { clearInterval(_this.animation); _this.animation = false; } return _this.animation = setInterval(function() { _this.ctx.clearRect(-_this.options.size / 2, -_this.options.size / 2, _this.options.size, _this.options.size); renderBackground.call(_this); drawLine.call(_this, [easeInOutQuad(currentStep, from, to - from, steps)]); currentStep++; if ((currentStep / steps) > 1) { clearInterval(_this.animation); _this.animation = false; return _this.options.onStop.call(_this); } }, 1000 / fps); }; easeInOutQuad = function(t, b, c, d) { var easeIn, easing; easeIn = function(t) { return Math.pow(t, 2); }; easing = function(t) { if (t < 1) { return easeIn(t); } else { return 2 - easeIn((t / 2) * -2 + 2); } }; t /= d / 2; return c / 2 * easing(t) + b; }; return this.init(); }; $.easyPieChart.defaultOptions = { barColor: '#ef1e25', trackColor: '#f2f2f2', scaleColor: '#dfe0e0', lineCap: 'round', size: 110, lineWidth: 3, animate: false, onStart: $.noop, onStop: $.noop }; $.fn.easyPieChart = function(options) { return $.each(this, function(i, el) { var $el; $el = $(el); if (!$el.data('easyPieChart')) { return $el.data('easyPieChart', new $.easyPieChart(el, options)); } }); }; return void 0; })(jQuery); }).call(this);