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Mini Shell
// 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: 1.2.3
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;
Date.now || (Date.now = function() {
return +(new Date);
});
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);
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