Team:Georgia State/Dependencies/EasypieJS

From 2014.igem.org

// Generated by CoffeeScript 1.6.3 /* 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: 1.2.2

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($) {

 $.easyPieChart = function(el, options) {
   var addScaleLine, animateLine, drawLine, easeInOutQuad, rAF, renderBackground, renderScale, renderTrack,
     _this = this;
   this.el = el;
   this.$el = $(el);
   this.$el.data("easyPieChart", this);
   this.init = function() {
     var percent, scaleBy;
     _this.options = $.extend({}, $.easyPieChart.defaultOptions, options);
     percent = parseInt(_this.$el.data('percent'), 10);
     _this.percentage = 0;
     _this.canvas = $("<canvas width='" + _this.options.size + "' height='" + _this.options.size + "'></canvas>").get(0);
     _this.$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) {
       scaleBy = window.devicePixelRatio;
       $(_this.canvas).css({
         width: _this.options.size,
         height: _this.options.size
       });
       _this.canvas.width *= scaleBy;
       _this.canvas.height *= scaleBy;
       _this.ctx.scale(scaleBy, scaleBy);
     }
     _this.ctx.translate(_this.options.size / 2, _this.options.size / 2);
     _this.ctx.rotate(_this.options.rotate * Math.PI / 180);
     _this.$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) {
     percent = parseFloat(percent) || 0;
     if (_this.options.animate === false) {
       drawLine(percent);
     } else {
       animateLine(_this.percentage, percent);
     }
     return _this;
   };
   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);
     _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;
     _this.ctx.stroke();
   };
   renderBackground = function() {
     if (_this.options.scaleColor !== false) {
       renderScale();
     }
     if (_this.options.trackColor !== false) {
       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();
     _this.ctx.restore();
   };
   rAF = (function() {
     return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(callback) {
       return window.setTimeout(callback, 1000 / 60);
     };
   })();
   animateLine = function(from, to) {
     var anim, startTime;
     _this.options.onStart.call(_this);
     _this.percentage = to;
     startTime = Date.now();
     anim = function() {
       var currentValue, process;
       process = Date.now() - startTime;
       if (process < _this.options.animate) {
         rAF(anim);
       }
       _this.ctx.clearRect(-_this.options.size / 2, -_this.options.size / 2, _this.options.size, _this.options.size);
       renderBackground.call(_this);
       currentValue = [easeInOutQuad(process, from, to - from, _this.options.animate)];
       _this.options.onStep.call(_this, currentValue);
       drawLine.call(_this, currentValue);
       if (process >= _this.options.animate) {
         return _this.options.onStop.call(_this, currentValue, to);
       }
     };
     rAF(anim);
   };
   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',
   rotate: 0,
   size: 110,
   lineWidth: 3,
   animate: false,
   onStart: $.noop,
   onStop: $.noop,
   onStep: $.noop
 };
 $.fn.easyPieChart = function(options) {
   return $.each(this, function(i, el) {
     var $el, instanceOptions;
     $el = $(el);
     if (!$el.data('easyPieChart')) {
       instanceOptions = $.extend({}, options, $el.data());
       return $el.data('easyPieChart', new $.easyPieChart(el, instanceOptions));
     }
   });
 };
 return void 0;

})(jQuery);