/*!jQuery Knob*/
/**
* Downward compatible, touchable dial
*
* Version: 1.2.0 (15/07/2012)
* Requires: jQuery v1.7+
*
* Copyright (c) 2012 Anthony Terrien
* Under MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* Thanks to vor, eskimoblood, spiffistan, FabrizioC
*/
(function($) {
/**
* Kontrol library
*/
"use strict";
/**
* Definition of globals and core
*/
var k = {}, // kontrol
max = Math.max,
min = Math.min;
k.c = {};
k.c.d = $(document);
k.c.t = function (e) {
return e.originalEvent.touches.length - 1;
};
/**
* Kontrol Object
*
* Definition of an abstract UI control
*
* Each concrete component must call this one.
*
* k.o.call(this);
*
*/
k.o = function () {
var s = this;
this.o = null; // array of options
this.$ = null; // jQuery wrapped element
this.i = null; // mixed HTMLInputElement or array of HTMLInputElement
this.g = null; // deprecated 2D graphics context for 'pre-rendering'
this.v = null; // value ; mixed array or integer
this.cv = null; // change value ; not commited value
this.x = 0; // canvas x position
this.y = 0; // canvas y position
this.w = 0; // canvas width
this.h = 0; // canvas height
this.$c = null; // jQuery canvas element
this.c = null; // rendered canvas context
this.t = 0; // touches index
this.isInit = false;
this.fgColor = null; // main color
this.pColor = null; // previous color
this.dH = null; // draw hook
this.cH = null; // change hook
this.eH = null; // cancel hook
this.rH = null; // release hook
this.scale = 1; // scale factor
this.relative = false;
this.relativeWidth = false;
this.relativeHeight = false;
this.$div = null; // component div
this.run = function () {
var cf = function (e, conf) {
var k;
for (k in conf) {
s.o[k] = conf[k];
}
s.init();
s._configure()
._draw();
};
if(this.$.data('kontroled')) return;
this.$.data('kontroled', true);
this.extend();
this.o = $.extend(
{
// Config
min : this.$.data('min') || 0,
max : this.$.data('max') || 100,
stopper : true,
readOnly : this.$.data('readonly') || (this.$.attr('readonly') == 'readonly'),
// UI
cursor : (this.$.data('cursor') === true && 30)
|| this.$.data('cursor')
|| 0,
thickness : (
this.$.data('thickness')
&& Math.max(Math.min(this.$.data('thickness'), 1), 0.01)
)
|| 0.35,
lineCap : this.$.data('linecap') || 'butt',
width : this.$.data('width') || 200,
height : this.$.data('height') || 200,
displayInput : this.$.data('displayinput') == null || this.$.data('displayinput'),
displayPrevious : this.$.data('displayprevious'),
fgColor : this.$.data('fgcolor') || '#87CEEB',
inputColor: this.$.data('inputcolor'),
font: this.$.data('font') || 'Arial',
fontWeight: this.$.data('font-weight') || 'bold',
inline : false,
step : this.$.data('step') || 1,
// Hooks
draw : null, // function () {}
change : null, // function (value) {}
cancel : null, // function () {}
release : null, // function (value) {}
error : null // function () {}
}, this.o
);
// finalize options
if(!this.o.inputColor) {
this.o.inputColor = this.o.fgColor;
}
// routing value
if(this.$.is('fieldset')) {
// fieldset = array of integer
this.v = {};
this.i = this.$.find('input')
this.i.each(function(k) {
var $this = $(this);
s.i[k] = $this;
s.v[k] = $this.val();
$this.bind(
'change keyup'
, function () {
var val = {};
val[k] = $this.val();
s.val(val);
}
);
});
this.$.find('legend').remove();
} else {
// input = integer
this.i = this.$;
this.v = this.$.val();
(this.v == '') && (this.v = this.o.min);
this.$.bind(
'change keyup'
, function () {
s.val(s._validate(s.$.val()));
}
);
}
(!this.o.displayInput) && this.$.hide();
// adds needed DOM elements (canvas, div)
this.$c = $(document.createElement('canvas'));
if (typeof G_vmlCanvasManager !== 'undefined') {
G_vmlCanvasManager.initElement(this.$c[0]);
}
this.c = this.$c[0].getContext ? this.$c[0].getContext('2d') : null;
if (!this.c) {
this.o.error && this.o.error();
return;
}
// hdpi support
this.scale = (window.devicePixelRatio || 1) /
(
this.c.webkitBackingStorePixelRatio ||
this.c.mozBackingStorePixelRatio ||
this.c.msBackingStorePixelRatio ||
this.c.oBackingStorePixelRatio ||
this.c.backingStorePixelRatio || 1
);
// detects relative width / height
this.relativeWidth = ((this.o.width % 1 !== 0)
&& this.o.width.indexOf('%'));
this.relativeHeight = ((this.o.height % 1 !== 0)
&& this.o.height.indexOf('%'));
this.relative = (this.relativeWidth || this.relativeHeight);
// wraps all elements in a div
this.$div = $('