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app/js/plugins/cirque/cirque.js
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setup acuefuel in...
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/*
* @name Cirque Plugin
* @version 0.1
* @requires jQuery 1.*.*
* @author Rod Howard
* @license MIT License - http://www.opensource.org/licenses/mit-license.php
*
* For usage and example, visit:
* http://jumpstartui.com/plugins/cirque
*
* Copyright (c) 2012, Rod Howard (rod@rodh.me)
*/
;(function ( $, window, undefined ) {
var pluginName = 'cirque',
document = window.document,
defaults = {
value: 0,
radius: 60,
total: 100,
label: 'percent',
lineWidth: 10,
arcColor: '#0066CC',
trackColor: '#EEEEEE',
trackFill: 'transparent',
animate: true,
speed: 20
};
function supports_canvas() {
return !!document.createElement('canvas').getContext;
}
function Cirque ( element, options ) {
this.element = element;
this.options = $.extend( {}, defaults, options, $(this.element).data ()) ;
this._defaults = defaults;
this._name = pluginName;
this.init();
}
Cirque.prototype.init = function () {
if (!supports_canvas ()) { return false; }
var container, canvas, track, value, canvasId, valueDisplay;
container = this.makeContainer ();
canvas = this.makeCanvas ();
track = this.makeTrack ();
this.arcContext = canvas.get (0).getContext("2d");
this.trackContext = track.get (0).getContext("2d");
this.drawTrack ();
value = this.makeValue ();
if (this.options.animate) {
this.start ();
} else {
this.drawArc (deg ((this.options.value/this.options.total) * 360));
}
};
Cirque.prototype.start = function () {
var count = 1;
var that = this;
var decimal = this.options.value / this.options.total;
var step = decimal / 50;
var interval = setInterval (function () {
if (count > 50 - 2) {
clearInterval (interval);
}
count++;
endAngle = deg ((step * count) * 360);
that.drawArc (endAngle);
}, that.options.speed);
}
Cirque.prototype.drawArc = function (endAngle) {
this.arcContext.clearRect (0, 0, this.options.radius*2, this.options.radius*2);
this.arcContext.beginPath();
this.arcContext.strokeStyle = this.options.arcColor;
this.arcContext.arc(this.options.radius,this.options.radius,this.options.radius - this.options.lineWidth, deg (0), endAngle);
this.arcContext.lineWidth = this.options.lineWidth;
this.arcContext.stroke();
}
$.fn['cirque'] = function ( options ) {
return this.each(function () {
if (!$.data(this, 'plugin_' + pluginName)) {
$.data(this, 'plugin_' + pluginName, new Cirque( this, options ));
}
});
};
Cirque.prototype.drawTrack = function () {
this.trackContext.beginPath();
this.trackContext.strokeStyle = this.options.trackColor;
this.trackContext.arc(this.options.radius,this.options.radius,this.options.radius - this.options.lineWidth, 0, 360);
this.trackContext.lineWidth = this.options.lineWidth;
this.trackContext.fillStyle = this.options.trackFill;
this.trackContext.fill ();
this.trackContext.stroke();
}
function deg (deg) {
return (Math.PI/180)*deg - (Math.PI/180)*90;
}
Cirque.prototype.makeValue = function () {
var value, valueDisplay, labelClass;
if (this.options.label == 'percent') {
value = Math.round(((this.options.value/this.options.total) * 100)*Math.pow(10,2))/Math.pow(10,2);
valueDisplay = value + '%';
labelClass = 'percent';
} else {
value = this.options.value;
valueDisplay = value + '/' + this.options.total;
labelClass = 'ratio';
}
return $('<div>', { 'class': 'cirque-label' })
.appendTo (this.element)
.html (valueDisplay)
.addClass (labelClass)
.css ({ 'width': this.options.radius*2 })
.css ({ 'height': this.options.radius*2 })
.css ({ 'line-height': this.options.radius*2 + 'px' });
}
Cirque.prototype.makeCanvas = function () {
return $('<canvas/>',{})
.appendTo (this.element)
.attr ('width', this.options.radius*2)
.attr ('height', this.options.radius*2)
.addClass ('cirque-fill');
}
Cirque.prototype.makeTrack = function () {
return $('<canvas/>',{})
.appendTo (this.element)
.attr ('width', this.options.radius*2)
.attr ('height', this.options.radius*2)
.addClass ('cirque-track');
}
Cirque.prototype.makeContainer = function () {
return $(this.element).addClass ('cirque-container')
.css ({ 'width': this.options.radius*2 })
.css ({ 'height': this.options.radius*2 });
}
}(jQuery, window));
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