blinker / firefox.plugin / data / lib / jquery.knob.js @ master
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/*!jQuery Knob*/
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/**
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* Downward compatible, touchable dial
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*
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* Version: 1.2.11
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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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|
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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.$.attr('readonly') === 'readonly'), |
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|
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// UI
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cursor: this.$.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.$.data('rotation'), |
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|
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// Hooks
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draw: null, // function () {} |
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change: null, // function (value) {} |
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cancel: null, // function () {} |
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release: null, // function (value) {} |
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// Output formatting, allows to add unit: %, ms ...
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format: function(v) { |
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return v;
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}, |
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parse: function (v) { |
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return parseFloat(v);
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} |
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}, this.o
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); |
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// finalize options
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this.o.flip = this.o.rotation === 'anticlockwise' || this.o.rotation === 'acw'; |
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if (!this.o.inputColor) { |
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this.o.inputColor = this.o.fgColor; |
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} |
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// routing value
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if (this.$.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.$.hide(); |
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|
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// adds needed DOM elements (canvas, div)
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this.$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.$div.parent().height(); |
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|
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// apply relative
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this.w = this.h = Math.min(w, h); |
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} else {
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this.w = this.o.width; |
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this.h = this.o.height; |
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} |
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// finalize div
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this.$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.$c |
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.bind( |
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"mousedown",
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function (e) {
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e.preventDefault(); |
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s._xy()._mouse(e); |
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} |
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) |
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.bind( |
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"touchstart",
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function (e) {
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e.preventDefault(); |
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s._xy()._touch(e); |
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} |
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); |
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|
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this.listen();
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} else {
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this.$.attr('readonly', 'readonly'); |
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} |
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|
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if (this.relative) { |
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$(window).resize(function() { |
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s._carve().init(); |
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s._draw(); |
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}); |
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} |
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|
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return this; |
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}; |
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|
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this._configure = function () { |
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|
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// Hooks
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if (this.o.draw) this.dH = this.o.draw; |
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if (this.o.change) this.cH = this.o.change; |
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if (this.o.cancel) this.eH = this.o.cancel; |
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if (this.o.release) this.rH = this.o.release; |
442 |
|
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if (this.o.displayPrevious) { |
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this.pColor = this.h2rgba(this.o.fgColor, "0.4"); |
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this.fgColor = this.h2rgba(this.o.fgColor, "0.6"); |
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} else {
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this.fgColor = this.o.fgColor; |
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} |
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|
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return this; |
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}; |
452 |
|
453 |
this._clear = function () { |
454 |
this.$c[0].width = this.$c[0].width; |
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}; |
456 |
|
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this._validate = function (v) { |
458 |
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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}; |
461 |
|
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// Abstract methods
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this.listen = function () {}; // on start, one time |
464 |
this.extend = function () {}; // each time configure triggered |
465 |
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 |
468 |
this.xy2val = function (x, y) {}; // |
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this.draw = function () {}; // on change / on release |
470 |
this.clear = function () { this._clear(); }; |
471 |
|
472 |
// Utils
|
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this.h2rgba = function (h, a) { |
474 |
var rgb;
|
475 |
h = h.substring(1,7) |
476 |
rgb = [ |
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parseInt(h.substring(0,2), 16), |
478 |
parseInt(h.substring(2,4), 16), |
479 |
parseInt(h.substring(4,6), 16) |
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]; |
481 |
|
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return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + a + ")"; |
483 |
}; |
484 |
|
485 |
this.copy = function (f, t) { |
486 |
for (var i in f) { |
487 |
t[i] = f[i]; |
488 |
} |
489 |
}; |
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}; |
491 |
|
492 |
|
493 |
/**
|
494 |
* k.Dial
|
495 |
*/
|
496 |
k.Dial = function () { |
497 |
k.o.call(this);
|
498 |
|
499 |
this.startAngle = null; |
500 |
this.xy = null; |
501 |
this.radius = null; |
502 |
this.lineWidth = null; |
503 |
this.cursorExt = null; |
504 |
this.w2 = null; |
505 |
this.PI2 = 2*Math.PI; |
506 |
|
507 |
this.extend = function () { |
508 |
this.o = $.extend({ |
509 |
bgColor: this.$.data('bgcolor') || '#EEEEEE', |
510 |
angleOffset: this.$.data('angleoffset') || 0, |
511 |
angleArc: this.$.data('anglearc') || 360, |
512 |
inline: true |
513 |
}, this.o);
|
514 |
}; |
515 |
|
516 |
this.val = function (v, triggerRelease) { |
517 |
if (null != v) { |
518 |
|
519 |
// reverse format
|
520 |
v = this.o.parse(v);
|
521 |
|
522 |
if (triggerRelease !== false |
523 |
&& v != this.v
|
524 |
&& this.rH
|
525 |
&& this.rH(v) === false) { return; } |
526 |
|
527 |
this.cv = this.o.stopper ? max(min(v, this.o.max), this.o.min) : v; |
528 |
this.v = this.cv; |
529 |
this.$.val(this.o.format(this.v)); |
530 |
this._draw();
|
531 |
} else {
|
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return this.v; |
533 |
} |
534 |
}; |
535 |
|
536 |
this.xy2val = function (x, y) { |
537 |
var a, ret;
|
538 |
|
539 |
a = Math.atan2( |
540 |
x - (this.x + this.w2), |
541 |
- (y - this.y - this.w2) |
542 |
) - this.angleOffset;
|
543 |
|
544 |
if (this.o.flip) { |
545 |
a = this.angleArc - a - this.PI2; |
546 |
} |
547 |
|
548 |
if (this.angleArc != this.PI2 && (a < 0) && (a > -0.5)) { |
549 |
|
550 |
// if isset angleArc option, set to min if .5 under min
|
551 |
a = 0;
|
552 |
} else if (a < 0) { |
553 |
a += this.PI2;
|
554 |
} |
555 |
|
556 |
ret = (a * (this.o.max - this.o.min) / this.angleArc) + this.o.min; |
557 |
|
558 |
this.o.stopper && (ret = max(min(ret, this.o.max), this.o.min)); |
559 |
|
560 |
return ret;
|
561 |
}; |
562 |
|
563 |
this.listen = function () { |
564 |
|
565 |
// bind MouseWheel
|
566 |
var s = this, mwTimerStop, |
567 |
mwTimerRelease, |
568 |
mw = function (e) { |
569 |
e.preventDefault(); |
570 |
|
571 |
var ori = e.originalEvent,
|
572 |
deltaX = ori.detail || ori.wheelDeltaX, |
573 |
deltaY = ori.detail || ori.wheelDeltaY, |
574 |
v = s._validate(s.o.parse(s.$.val()))
|
575 |
+ ( |
576 |
deltaX > 0 || deltaY > 0 |
577 |
? s.o.step |
578 |
: deltaX < 0 || deltaY < 0 ? -s.o.step : 0 |
579 |
); |
580 |
|
581 |
v = max(min(v, s.o.max), s.o.min); |
582 |
|
583 |
s.val(v, false);
|
584 |
|
585 |
if (s.rH) {
|
586 |
// Handle mousewheel stop
|
587 |
clearTimeout(mwTimerStop); |
588 |
mwTimerStop = setTimeout(function () {
|
589 |
s.rH(v); |
590 |
mwTimerStop = null;
|
591 |
}, 100);
|
592 |
|
593 |
// Handle mousewheel releases
|
594 |
if (!mwTimerRelease) {
|
595 |
mwTimerRelease = setTimeout(function () {
|
596 |
if (mwTimerStop)
|
597 |
s.rH(v); |
598 |
mwTimerRelease = null;
|
599 |
}, 200);
|
600 |
} |
601 |
} |
602 |
}, |
603 |
kval, |
604 |
to, |
605 |
m = 1,
|
606 |
kv = { |
607 |
37: -s.o.step,
|
608 |
38: s.o.step,
|
609 |
39: s.o.step,
|
610 |
40: -s.o.step
|
611 |
}; |
612 |
|
613 |
this.$ |
614 |
.bind( |
615 |
"keydown",
|
616 |
function (e) {
|
617 |
var kc = e.keyCode;
|
618 |
|
619 |
// numpad support
|
620 |
if (kc >= 96 && kc <= 105) { |
621 |
kc = e.keyCode = kc - 48;
|
622 |
} |
623 |
|
624 |
kval = parseInt(String.fromCharCode(kc)); |
625 |
|
626 |
if (isNaN(kval)) {
|
627 |
(kc !== 13) // enter |
628 |
&& kc !== 8 // bs |
629 |
&& kc !== 9 // tab |
630 |
&& kc !== 189 // - |
631 |
&& (kc !== 190
|
632 |
|| s.$.val().match(/\./)) // . allowed once |
633 |
&& e.preventDefault(); |
634 |
|
635 |
// arrows
|
636 |
if ($.inArray(kc,[37,38,39,40]) > -1) { |
637 |
e.preventDefault(); |
638 |
|
639 |
var v = s.o.parse(s.$.val()) + kv[kc] * m; |
640 |
s.o.stopper && (v = max(min(v, s.o.max), s.o.min)); |
641 |
|
642 |
s.change(s._validate(v)); |
643 |
s._draw(); |
644 |
|
645 |
// long time keydown speed-up
|
646 |
to = window.setTimeout(function () {
|
647 |
m *= 2;
|
648 |
}, 30);
|
649 |
} |
650 |
} |
651 |
} |
652 |
) |
653 |
.bind( |
654 |
"keyup",
|
655 |
function (e) {
|
656 |
if (isNaN(kval)) {
|
657 |
if (to) {
|
658 |
window.clearTimeout(to); |
659 |
to = null;
|
660 |
m = 1;
|
661 |
s.val(s.$.val());
|
662 |
} |
663 |
} else {
|
664 |
// kval postcond
|
665 |
(s.$.val() > s.o.max && s.$.val(s.o.max)) |
666 |
|| (s.$.val() < s.o.min && s.$.val(s.o.min)); |
667 |
} |
668 |
} |
669 |
); |
670 |
|
671 |
this.$c.bind("mousewheel DOMMouseScroll", mw); |
672 |
this.$.bind("mousewheel DOMMouseScroll", mw) |
673 |
}; |
674 |
|
675 |
this.init = function () { |
676 |
if (this.v < this.o.min |
677 |
|| this.v > this.o.max) { this.v = this.o.min; } |
678 |
|
679 |
this.$.val(this.v); |
680 |
this.w2 = this.w / 2; |
681 |
this.cursorExt = this.o.cursor / 100; |
682 |
this.xy = this.w2 * this.scale; |
683 |
this.lineWidth = this.xy * this.o.thickness; |
684 |
this.lineCap = this.o.lineCap; |
685 |
this.radius = this.xy - this.lineWidth / 2; |
686 |
|
687 |
this.o.angleOffset
|
688 |
&& (this.o.angleOffset = isNaN(this.o.angleOffset) ? 0 : this.o.angleOffset); |
689 |
|
690 |
this.o.angleArc
|
691 |
&& (this.o.angleArc = isNaN(this.o.angleArc) ? this.PI2 : this.o.angleArc); |
692 |
|
693 |
// deg to rad
|
694 |
this.angleOffset = this.o.angleOffset * Math.PI / 180; |
695 |
this.angleArc = this.o.angleArc * Math.PI / 180; |
696 |
|
697 |
// compute start and end angles
|
698 |
this.startAngle = 1.5 * Math.PI + this.angleOffset; |
699 |
this.endAngle = 1.5 * Math.PI + this.angleOffset + this.angleArc; |
700 |
|
701 |
var s = max(
|
702 |
String(Math.abs(this.o.max)).length,
|
703 |
String(Math.abs(this.o.min)).length,
|
704 |
2
|
705 |
) + 2;
|
706 |
|
707 |
this.o.displayInput
|
708 |
&& this.i.css({
|
709 |
'width' : ((this.w / 2 + 4) >> 0) + 'px', |
710 |
'height' : ((this.w / 3) >> 0) + 'px', |
711 |
'position' : 'absolute', |
712 |
'vertical-align' : 'middle', |
713 |
'margin-top' : ((this.w / 3) >> 0) + 'px', |
714 |
'margin-left' : '-' + ((this.w * 3 / 4 + 2) >> 0) + 'px', |
715 |
'border' : 0, |
716 |
'background' : 'none', |
717 |
'font' : this.o.fontWeight + ' ' + ((this.w / s) >> 0) + 'px ' + this.o.font, |
718 |
'text-align' : 'center', |
719 |
'color' : this.o.inputColor || this.o.fgColor, |
720 |
'padding' : '0px', |
721 |
'-webkit-appearance': 'none' |
722 |
}) || this.i.css({
|
723 |
'width': '0px', |
724 |
'visibility': 'hidden' |
725 |
}); |
726 |
}; |
727 |
|
728 |
this.change = function (v) { |
729 |
this.cv = v;
|
730 |
this.$.val(this.o.format(v)); |
731 |
}; |
732 |
|
733 |
this.angle = function (v) { |
734 |
return (v - this.o.min) * this.angleArc / (this.o.max - this.o.min); |
735 |
}; |
736 |
|
737 |
this.arc = function (v) { |
738 |
var sa, ea;
|
739 |
v = this.angle(v);
|
740 |
if (this.o.flip) { |
741 |
sa = this.endAngle + 0.00001; |
742 |
ea = sa - v - 0.00001;
|
743 |
} else {
|
744 |
sa = this.startAngle - 0.00001; |
745 |
ea = sa + v + 0.00001;
|
746 |
} |
747 |
this.o.cursor
|
748 |
&& (sa = ea - this.cursorExt)
|
749 |
&& (ea = ea + this.cursorExt);
|
750 |
|
751 |
return {
|
752 |
s: sa,
|
753 |
e: ea,
|
754 |
d: this.o.flip && !this.o.cursor |
755 |
}; |
756 |
}; |
757 |
|
758 |
this.draw = function () { |
759 |
var c = this.g, // context |
760 |
a = this.arc(this.cv), // Arc |
761 |
pa, // Previous arc
|
762 |
r = 1;
|
763 |
|
764 |
c.lineWidth = this.lineWidth;
|
765 |
c.lineCap = this.lineCap;
|
766 |
|
767 |
if (this.o.bgColor !== "none") { |
768 |
c.beginPath(); |
769 |
c.strokeStyle = this.o.bgColor;
|
770 |
c.arc(this.xy, this.xy, this.radius, this.endAngle - 0.00001, this.startAngle + 0.00001, true); |
771 |
c.stroke(); |
772 |
} |
773 |
|
774 |
if (this.o.displayPrevious) { |
775 |
pa = this.arc(this.v); |
776 |
c.beginPath(); |
777 |
c.strokeStyle = this.pColor;
|
778 |
c.arc(this.xy, this.xy, this.radius, pa.s, pa.e, pa.d); |
779 |
c.stroke(); |
780 |
r = this.cv == this.v; |
781 |
} |
782 |
|
783 |
c.beginPath(); |
784 |
c.strokeStyle = r ? this.o.fgColor : this.fgColor ; |
785 |
c.arc(this.xy, this.xy, this.radius, a.s, a.e, a.d); |
786 |
c.stroke(); |
787 |
}; |
788 |
|
789 |
this.cancel = function () { |
790 |
this.val(this.v); |
791 |
}; |
792 |
}; |
793 |
|
794 |
$.fn.dial = $.fn.knob = function (o) { |
795 |
return this.each( |
796 |
function () {
|
797 |
var d = new k.Dial(); |
798 |
d.o = o; |
799 |
d.$ = $(this); |
800 |
d.run(); |
801 |
} |
802 |
).parent(); |
803 |
}; |
804 |
|
805 |
})); |