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806 lines
26 KiB
806 lines
26 KiB
/*!jQuery Knob*/
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/**
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* Downward compatible, touchable dial
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*
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* Version: 1.2.12
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* Requires: jQuery v1.7+
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*
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* Copyright (c) 2012 Anthony Terrien
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* Under MIT License (http://www.opensource.org/licenses/mit-license.php)
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*
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* Thanks to vor, eskimoblood, spiffistan, FabrizioC
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*/
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(function (factory) {
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if (typeof exports === 'object') {
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// CommonJS
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module.exports = factory(require('jquery'));
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} else if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(['jquery'], factory);
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} else {
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// Browser globals
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factory(jQuery);
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}
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}(function ($) {
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/**
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* Kontrol library
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*/
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"use strict";
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/**
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* Definition of globals and core
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*/
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var k = {}, // kontrol
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max = Math.max,
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min = Math.min;
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k.c = {};
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k.c.d = $(document);
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k.c.t = function (e) {
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return e.originalEvent.touches.length - 1;
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};
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/**
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* Kontrol Object
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*
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* Definition of an abstract UI control
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*
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* Each concrete component must call this one.
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* <code>
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* k.o.call(this);
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* </code>
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*/
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k.o = function () {
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var s = this;
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this.o = null; // array of options
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this.$ = null; // jQuery wrapped element
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this.i = null; // mixed HTMLInputElement or array of HTMLInputElement
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this.g = null; // deprecated 2D graphics context for 'pre-rendering'
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this.v = null; // value ; mixed array or integer
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this.cv = null; // change value ; not commited value
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this.x = 0; // canvas x position
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this.y = 0; // canvas y position
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this.w = 0; // canvas width
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this.h = 0; // canvas height
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this.$c = null; // jQuery canvas element
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this.c = null; // rendered canvas context
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this.t = 0; // touches index
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this.isInit = false;
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this.fgColor = null; // main color
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this.pColor = null; // previous color
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this.dH = null; // draw hook
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this.cH = null; // change hook
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this.eH = null; // cancel hook
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this.rH = null; // release hook
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this.scale = 1; // scale factor
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this.relative = false;
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this.relativeWidth = false;
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this.relativeHeight = false;
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this.$div = null; // component div
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this.run = function () {
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var cf = function (e, conf) {
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var k;
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for (k in conf) {
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s.o[k] = conf[k];
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}
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s._carve().init();
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s._configure()
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._draw();
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};
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if (this.$.data('kontroled')) return;
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this.$.data('kontroled', true);
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this.extend();
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this.o = $.extend({
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// Config
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min: this.$.data('min') !== undefined ? this.$.data('min') : 0,
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max: this.$.data('max') !== undefined ? this.$.data('max') : 100,
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stopper: true,
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readOnly: this.$.data('readonly') || (this.$.attr('readonly') === 'readonly'),
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// UI
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cursor: this.$.data('cursor') === true && 30
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|| this.$.data('cursor') || 0,
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thickness: this.$.data('thickness')
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&& Math.max(Math.min(this.$.data('thickness'), 1), 0.01)
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|| 0.35,
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lineCap: this.$.data('linecap') || 'butt',
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width: this.$.data('width') || 200,
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height: this.$.data('height') || 200,
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displayInput: this.$.data('displayinput') == null || this.$.data('displayinput'),
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displayPrevious: this.$.data('displayprevious'),
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fgColor: this.$.data('fgcolor') || '#87CEEB',
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inputColor: this.$.data('inputcolor'),
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font: this.$.data('font') || 'Arial',
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fontWeight: this.$.data('font-weight') || 'bold',
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inline: false,
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step: this.$.data('step') || 1,
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rotation: this.$.data('rotation'),
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// Hooks
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draw: null, // function () {}
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change: null, // function (value) {}
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cancel: null, // function () {}
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release: null, // function (value) {}
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// Output formatting, allows to add unit: %, ms ...
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format: function(v) {
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return v;
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},
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parse: function (v) {
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return parseFloat(v);
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}
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}, this.o
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);
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// finalize options
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this.o.flip = this.o.rotation === 'anticlockwise' || this.o.rotation === 'acw';
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if (!this.o.inputColor) {
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this.o.inputColor = this.o.fgColor;
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}
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// routing value
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if (this.$.is('fieldset')) {
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// fieldset = array of integer
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this.v = {};
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this.i = this.$.find('input');
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this.i.each(function(k) {
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var $this = $(this);
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s.i[k] = $this;
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s.v[k] = s.o.parse($this.val());
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$this.bind(
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'change blur',
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function () {
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var val = {};
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val[k] = $this.val();
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s.val(s._validate(val));
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}
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);
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});
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this.$.find('legend').remove();
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} else {
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// input = integer
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this.i = this.$;
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this.v = this.o.parse(this.$.val());
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this.v === '' && (this.v = this.o.min);
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this.$.bind(
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'change blur',
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function () {
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s.val(s._validate(s.o.parse(s.$.val())));
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}
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);
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}
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!this.o.displayInput && this.$.hide();
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// adds needed DOM elements (canvas, div)
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this.$c = $(document.createElement('canvas')).attr({
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width: this.o.width,
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height: this.o.height
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});
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// wraps all elements in a div
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// add to DOM before Canvas init is triggered
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this.$div = $('<div style="'
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+ (this.o.inline ? 'display:inline;' : '')
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+ 'width:' + this.o.width + 'px;height:' + this.o.height + 'px;'
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+ '"></div>');
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this.$.wrap(this.$div).before(this.$c);
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this.$div = this.$.parent();
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if (typeof G_vmlCanvasManager !== 'undefined') {
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G_vmlCanvasManager.initElement(this.$c[0]);
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}
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this.c = this.$c[0].getContext ? this.$c[0].getContext('2d') : null;
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if (!this.c) {
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throw {
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name: "CanvasNotSupportedException",
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message: "Canvas not supported. Please use excanvas on IE8.0.",
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toString: function(){return this.name + ": " + this.message}
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}
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}
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// hdpi support
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this.scale = (window.devicePixelRatio || 1) / (
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this.c.webkitBackingStorePixelRatio ||
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this.c.mozBackingStorePixelRatio ||
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this.c.msBackingStorePixelRatio ||
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this.c.oBackingStorePixelRatio ||
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this.c.backingStorePixelRatio || 1
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);
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// detects relative width / height
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this.relativeWidth = this.o.width % 1 !== 0
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&& this.o.width.indexOf('%');
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this.relativeHeight = this.o.height % 1 !== 0
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&& this.o.height.indexOf('%');
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this.relative = this.relativeWidth || this.relativeHeight;
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// computes size and carves the component
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this._carve();
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// prepares props for transaction
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if (this.v instanceof Object) {
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this.cv = {};
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this.copy(this.v, this.cv);
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} else {
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this.cv = this.v;
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}
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// binds configure event
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this.$
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.bind("configure", cf)
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.parent()
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.bind("configure", cf);
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// finalize init
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this._listen()
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._configure()
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._xy()
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.init();
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this.isInit = true;
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this.$.val(this.o.format(this.v));
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this._draw();
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return this;
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};
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this._carve = function() {
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if (this.relative) {
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var w = this.relativeWidth ?
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this.$div.parent().width() *
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parseInt(this.o.width) / 100
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: this.$div.parent().width(),
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h = this.relativeHeight ?
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this.$div.parent().height() *
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parseInt(this.o.height) / 100
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: this.$div.parent().height();
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// apply relative
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this.w = this.h = Math.min(w, h);
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} else {
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this.w = this.o.width;
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this.h = this.o.height;
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}
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// finalize div
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this.$div.css({
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'width': this.w + 'px',
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'height': this.h + 'px'
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});
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// finalize canvas with computed width
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this.$c.attr({
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width: this.w,
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height: this.h
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});
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// scaling
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if (this.scale !== 1) {
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this.$c[0].width = this.$c[0].width * this.scale;
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this.$c[0].height = this.$c[0].height * this.scale;
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this.$c.width(this.w);
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this.$c.height(this.h);
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}
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return this;
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};
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this._draw = function () {
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// canvas pre-rendering
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var d = true;
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s.g = s.c;
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s.clear();
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s.dH && (d = s.dH());
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d !== false && s.draw();
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};
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this._touch = function (e) {
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var touchMove = function (e) {
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var v = s.xy2val(
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e.originalEvent.touches[s.t].pageX,
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e.originalEvent.touches[s.t].pageY
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);
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if (v == s.cv) return;
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if (s.cH && s.cH(v) === false) return;
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s.change(s._validate(v));
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s._draw();
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};
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// get touches index
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this.t = k.c.t(e);
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// First touch
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touchMove(e);
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// Touch events listeners
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k.c.d
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.bind("touchmove.k", touchMove)
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.bind(
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"touchend.k",
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function () {
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k.c.d.unbind('touchmove.k touchend.k');
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s.val(s.cv);
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}
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);
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return this;
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};
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this._mouse = function (e) {
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var mouseMove = function (e) {
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var v = s.xy2val(e.pageX, e.pageY);
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if (v == s.cv) return;
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if (s.cH && (s.cH(v) === false)) return;
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s.change(s._validate(v));
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s._draw();
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};
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// First click
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mouseMove(e);
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// Mouse events listeners
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k.c.d
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.bind("mousemove.k", mouseMove)
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.bind(
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// Escape key cancel current change
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"keyup.k",
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function (e) {
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if (e.keyCode === 27) {
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k.c.d.unbind("mouseup.k mousemove.k keyup.k");
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if (s.eH && s.eH() === false)
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return;
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s.cancel();
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}
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}
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)
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.bind(
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"mouseup.k",
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function (e) {
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k.c.d.unbind('mousemove.k mouseup.k keyup.k');
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s.val(s.cv);
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}
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);
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return this;
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};
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this._xy = function () {
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var o = this.$c.offset();
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this.x = o.left;
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this.y = o.top;
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return this;
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};
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this._listen = function () {
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if (!this.o.readOnly) {
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this.$c
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.bind(
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"mousedown",
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function (e) {
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e.preventDefault();
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s._xy()._mouse(e);
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}
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)
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.bind(
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"touchstart",
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function (e) {
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e.preventDefault();
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s._xy()._touch(e);
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}
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);
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this.listen();
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} else {
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this.$.attr('readonly', 'readonly');
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}
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if (this.relative) {
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$(window).resize(function() {
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s._carve().init();
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s._draw();
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});
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}
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return this;
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};
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this._configure = function () {
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// Hooks
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if (this.o.draw) this.dH = this.o.draw;
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if (this.o.change) this.cH = this.o.change;
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if (this.o.cancel) this.eH = this.o.cancel;
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if (this.o.release) this.rH = this.o.release;
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if (this.o.displayPrevious) {
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this.pColor = this.h2rgba(this.o.fgColor, "0.4");
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this.fgColor = this.h2rgba(this.o.fgColor, "0.6");
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} else {
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this.fgColor = this.o.fgColor;
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}
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return this;
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};
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this._clear = function () {
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this.$c[0].width = this.$c[0].width;
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};
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this._validate = function (v) {
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var val = (~~ (((v < 0) ? -0.5 : 0.5) + (v/this.o.step))) * this.o.step;
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return Math.round(val * 100) / 100;
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};
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// Abstract methods
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this.listen = function () {}; // on start, one time
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this.extend = function () {}; // each time configure triggered
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this.init = function () {}; // each time configure triggered
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this.change = function (v) {}; // on change
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this.val = function (v) {}; // on release
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this.xy2val = function (x, y) {}; //
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this.draw = function () {}; // on change / on release
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this.clear = function () { this._clear(); };
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// Utils
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this.h2rgba = function (h, a) {
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var rgb;
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h = h.substring(1,7);
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rgb = [
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parseInt(h.substring(0,2), 16),
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parseInt(h.substring(2,4), 16),
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parseInt(h.substring(4,6), 16)
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];
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return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + a + ")";
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};
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this.copy = function (f, t) {
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for (var i in f) {
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t[i] = f[i];
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}
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};
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};
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/**
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* k.Dial
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*/
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k.Dial = function () {
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k.o.call(this);
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this.startAngle = null;
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this.xy = null;
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this.radius = null;
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this.lineWidth = null;
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this.cursorExt = null;
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this.w2 = null;
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this.PI2 = 2*Math.PI;
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this.extend = function () {
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this.o = $.extend({
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bgColor: this.$.data('bgcolor') || '#EEEEEE',
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angleOffset: this.$.data('angleoffset') || 0,
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angleArc: this.$.data('anglearc') || 360,
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inline: true
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}, this.o);
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};
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this.val = function (v, triggerRelease) {
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if (null != v) {
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// reverse format
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v = this.o.parse(v);
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if (triggerRelease !== false
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&& v != this.v
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&& this.rH
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&& this.rH(v) === false) { return; }
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this.cv = this.o.stopper ? max(min(v, this.o.max), this.o.min) : v;
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this.v = this.cv;
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this.$.val(this.o.format(this.v));
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this._draw();
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} else {
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return this.v;
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}
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};
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this.xy2val = function (x, y) {
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var a, ret;
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a = Math.atan2(
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x - (this.x + this.w2),
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- (y - this.y - this.w2)
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) - this.angleOffset;
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if (this.o.flip) {
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a = this.angleArc - a - this.PI2;
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}
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if (this.angleArc != this.PI2 && (a < 0) && (a > -0.5)) {
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// if isset angleArc option, set to min if .5 under min
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a = 0;
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} else if (a < 0) {
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a += this.PI2;
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}
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ret = (a * (this.o.max - this.o.min) / this.angleArc) + this.o.min;
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this.o.stopper && (ret = max(min(ret, this.o.max), this.o.min));
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return ret;
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};
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this.listen = function () {
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// bind MouseWheel
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var s = this, mwTimerStop,
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mwTimerRelease,
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mw = function (e) {
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e.preventDefault();
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var ori = e.originalEvent,
|
|
deltaX = ori.detail || ori.wheelDeltaX,
|
|
deltaY = ori.detail || ori.wheelDeltaY,
|
|
v = s._validate(s.o.parse(s.$.val()))
|
|
+ (
|
|
deltaX > 0 || deltaY > 0
|
|
? s.o.step
|
|
: deltaX < 0 || deltaY < 0 ? -s.o.step : 0
|
|
);
|
|
|
|
v = max(min(v, s.o.max), s.o.min);
|
|
|
|
s.val(v, false);
|
|
|
|
if (s.rH) {
|
|
// Handle mousewheel stop
|
|
clearTimeout(mwTimerStop);
|
|
mwTimerStop = setTimeout(function () {
|
|
s.rH(v);
|
|
mwTimerStop = null;
|
|
}, 100);
|
|
|
|
// Handle mousewheel releases
|
|
if (!mwTimerRelease) {
|
|
mwTimerRelease = setTimeout(function () {
|
|
if (mwTimerStop)
|
|
s.rH(v);
|
|
mwTimerRelease = null;
|
|
}, 200);
|
|
}
|
|
}
|
|
},
|
|
kval,
|
|
to,
|
|
m = 1,
|
|
kv = {
|
|
37: -s.o.step,
|
|
38: s.o.step,
|
|
39: s.o.step,
|
|
40: -s.o.step
|
|
};
|
|
|
|
this.$
|
|
.bind(
|
|
"keydown",
|
|
function (e) {
|
|
var kc = e.keyCode;
|
|
|
|
// numpad support
|
|
if (kc >= 96 && kc <= 105) {
|
|
kc = e.keyCode = kc - 48;
|
|
}
|
|
|
|
kval = parseInt(String.fromCharCode(kc));
|
|
|
|
if (isNaN(kval)) {
|
|
(kc !== 13) // enter
|
|
&& kc !== 8 // bs
|
|
&& kc !== 9 // tab
|
|
&& kc !== 189 // -
|
|
&& (kc !== 190
|
|
|| s.$.val().match(/\./)) // . allowed once
|
|
&& e.preventDefault();
|
|
|
|
// arrows
|
|
if ($.inArray(kc,[37,38,39,40]) > -1) {
|
|
e.preventDefault();
|
|
|
|
var v = s.o.parse(s.$.val()) + kv[kc] * m;
|
|
s.o.stopper && (v = max(min(v, s.o.max), s.o.min));
|
|
|
|
s.change(s._validate(v));
|
|
s._draw();
|
|
|
|
// long time keydown speed-up
|
|
to = window.setTimeout(function () {
|
|
m *= 2;
|
|
}, 30);
|
|
}
|
|
}
|
|
}
|
|
)
|
|
.bind(
|
|
"keyup",
|
|
function (e) {
|
|
if (isNaN(kval)) {
|
|
if (to) {
|
|
window.clearTimeout(to);
|
|
to = null;
|
|
m = 1;
|
|
s.val(s.$.val());
|
|
}
|
|
} else {
|
|
// kval postcond
|
|
(s.$.val() > s.o.max && s.$.val(s.o.max))
|
|
|| (s.$.val() < s.o.min && s.$.val(s.o.min));
|
|
}
|
|
}
|
|
);
|
|
|
|
this.$c.bind("mousewheel DOMMouseScroll", mw);
|
|
this.$.bind("mousewheel DOMMouseScroll", mw);
|
|
};
|
|
|
|
this.init = function () {
|
|
if (this.v < this.o.min
|
|
|| this.v > this.o.max) { this.v = this.o.min; }
|
|
|
|
this.$.val(this.v);
|
|
this.w2 = this.w / 2;
|
|
this.cursorExt = this.o.cursor / 100;
|
|
this.xy = this.w2 * this.scale;
|
|
this.lineWidth = this.xy * this.o.thickness;
|
|
this.lineCap = this.o.lineCap;
|
|
this.radius = this.xy - this.lineWidth / 2;
|
|
|
|
this.o.angleOffset
|
|
&& (this.o.angleOffset = isNaN(this.o.angleOffset) ? 0 : this.o.angleOffset);
|
|
|
|
this.o.angleArc
|
|
&& (this.o.angleArc = isNaN(this.o.angleArc) ? this.PI2 : this.o.angleArc);
|
|
|
|
// deg to rad
|
|
this.angleOffset = this.o.angleOffset * Math.PI / 180;
|
|
this.angleArc = this.o.angleArc * Math.PI / 180;
|
|
|
|
// compute start and end angles
|
|
this.startAngle = 1.5 * Math.PI + this.angleOffset;
|
|
this.endAngle = 1.5 * Math.PI + this.angleOffset + this.angleArc;
|
|
|
|
var s = max(
|
|
String(Math.abs(this.o.max)).length,
|
|
String(Math.abs(this.o.min)).length,
|
|
2
|
|
) + 2;
|
|
|
|
this.o.displayInput
|
|
&& this.i.css({
|
|
'width' : ((this.w / 2 + 4) >> 0) + 'px',
|
|
'height' : ((this.w / 3) >> 0) + 'px',
|
|
'position' : 'absolute',
|
|
'vertical-align' : 'middle',
|
|
'margin-top' : ((this.w / 3) >> 0) + 'px',
|
|
'margin-left' : '-' + ((this.w * 3 / 4 + 2) >> 0) + 'px',
|
|
'border' : 0,
|
|
'background' : 'none',
|
|
'font' : this.o.fontWeight + ' ' + ((this.w / s) >> 0) + 'px ' + this.o.font,
|
|
'text-align' : 'center',
|
|
'color' : this.o.inputColor || this.o.fgColor,
|
|
'padding' : '0px',
|
|
'-webkit-appearance': 'none'
|
|
}) || this.i.css({
|
|
'width': '0px',
|
|
'visibility': 'hidden'
|
|
});
|
|
};
|
|
|
|
this.change = function (v) {
|
|
this.cv = v;
|
|
this.$.val(this.o.format(v));
|
|
};
|
|
|
|
this.angle = function (v) {
|
|
return (v - this.o.min) * this.angleArc / (this.o.max - this.o.min);
|
|
};
|
|
|
|
this.arc = function (v) {
|
|
var sa, ea;
|
|
v = this.angle(v);
|
|
if (this.o.flip) {
|
|
sa = this.endAngle + 0.00001;
|
|
ea = sa - v - 0.00001;
|
|
} else {
|
|
sa = this.startAngle - 0.00001;
|
|
ea = sa + v + 0.00001;
|
|
}
|
|
this.o.cursor
|
|
&& (sa = ea - this.cursorExt)
|
|
&& (ea = ea + this.cursorExt);
|
|
|
|
return {
|
|
s: sa,
|
|
e: ea,
|
|
d: this.o.flip && !this.o.cursor
|
|
};
|
|
};
|
|
|
|
this.draw = function () {
|
|
var c = this.g, // context
|
|
a = this.arc(this.cv), // Arc
|
|
pa, // Previous arc
|
|
r = 1;
|
|
|
|
c.lineWidth = this.lineWidth;
|
|
c.lineCap = this.lineCap;
|
|
|
|
if (this.o.bgColor !== "none") {
|
|
c.beginPath();
|
|
c.strokeStyle = this.o.bgColor;
|
|
c.arc(this.xy, this.xy, this.radius, this.endAngle - 0.00001, this.startAngle + 0.00001, true);
|
|
c.stroke();
|
|
}
|
|
|
|
if (this.o.displayPrevious) {
|
|
pa = this.arc(this.v);
|
|
c.beginPath();
|
|
c.strokeStyle = this.pColor;
|
|
c.arc(this.xy, this.xy, this.radius, pa.s, pa.e, pa.d);
|
|
c.stroke();
|
|
r = this.cv == this.v;
|
|
}
|
|
|
|
c.beginPath();
|
|
c.strokeStyle = r ? this.o.fgColor : this.fgColor ;
|
|
c.arc(this.xy, this.xy, this.radius, a.s, a.e, a.d);
|
|
c.stroke();
|
|
};
|
|
|
|
this.cancel = function () {
|
|
this.val(this.v);
|
|
};
|
|
};
|
|
|
|
$.fn.dial = $.fn.knob = function (o) {
|
|
return this.each(
|
|
function () {
|
|
var d = new k.Dial();
|
|
d.o = o;
|
|
d.$ = $(this);
|
|
d.run();
|
|
}
|
|
).parent();
|
|
};
|
|
|
|
}));
|