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12 lines
8.8 KiB
JavaScript
12 lines
8.8 KiB
JavaScript
2 months ago
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/*!jQuery Knob
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* Version: 1.2.0 (15/07/2012)
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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 and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*
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* Thanks to vor, eskimoblood, spiffistan, FabrizioC
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*/
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!function(a){"use strict";var b={},c=Math.max,d=Math.min;b.c={},b.c.d=a(document),b.c.t=function(a){return a.originalEvent.touches.length-1},b.o=function(){var c=this;this.o=null,this.$=null,this.i=null,this.g=null,this.v=null,this.cv=null,this.x=0,this.y=0,this.$c=null,this.c=null,this.t=0,this.isInit=!1,this.fgColor=null,this.pColor=null,this.dH=null,this.cH=null,this.eH=null,this.rH=null,this.scale=1,this.run=function(){var b=function(a,b){var d;for(d in b)c.o[d]=b[d];c.init(),c._configure()._draw()};if(!this.$.data("kontroled"))return this.$.data("kontroled",!0),this.extend(),this.o=a.extend({min:this.$.data("min")||0,max:this.$.data("max")||100,stopper:!0,readOnly:this.$.data("readonly"),cursor:this.$.data("cursor")===!0&&30||this.$.data("cursor")||0,thickness:this.$.data("thickness")||.35,lineCap:this.$.data("linecap")||"butt",width:this.$.data("width")||200,height:this.$.data("height")||200,displayInput:null==this.$.data("displayinput")||this.$.data("displayinput"),displayPrevious:this.$.data("displayprevious"),fgColor:this.$.data("fgcolor")||"#87CEEB",inputColor:this.$.data("inputcolor")||this.$.data("fgcolor")||"#87CEEB",inline:!1,step:this.$.data("step")||1,draw:null,change:null,cancel:null,release:null,error:null},this.o),this.$.is("fieldset")?(this.v={},this.i=this.$.find("input"),this.i.each(function(b){var d=a(this);c.i[b]=d,c.v[b]=d.val(),d.bind("change",function(){var a={};a[b]=d.val(),c.val(a)})}),this.$.find("legend").remove()):(this.i=this.$,this.v=this.$.val(),""==this.v&&(this.v=this.o.min),this.$.bind("change",function(){c.val(c._validate(c.$.val()))})),!this.o.displayInput&&this.$.hide(),this.$c=a('<canvas width="'+this.o.width+'px" height="'+this.o.height+'px"></canvas>'),this.c=this.$c[0].getContext?this.$c[0].getContext("2d"):null,this.c?(this.$.wrap(a('<div style="'+(this.o.inline?"display:inline;":"")+"width:"+this.o.width+"px;height:"+this.o.height+'px;"></div>')).before(this.$c),this.scale=(window.devicePixelRatio||1)/(this.c.webkitBackingStorePixelRatio||this.c.mozBackingStorePixelRatio||this.c.msBackingStorePixelRatio||this.c.oBackingStorePixelRatio||this.c.backingStorePixelRatio||1),1!==this.scale&&(this.$c[0].width=this.$c[0].width*this.scale,this.$c[0].height=this.$c[0].height*this.scale,this.$c.width(this.o.width),this.$c.height(this.o.height)),this.v instanceof Object?(this.cv={},this.copy(this.v,this.cv)):this.cv=this.v,this.$.bind("configure",b).parent().bind("configure",b),this._listen()._configure()._xy().init(),this.isInit=!0,this._draw(),this):(this.o.error&&this.o.error(),void 0)},this._draw=function(){var a=!0,b=document.createElement("canvas");b.width=c.o.width*c.scale,b.height=c.o.height*c.scale,c.g=b.getContext("2d"),c.clear(),c.dH&&(a=c.dH()),a!==!1&&c.draw(),c.c.drawImage(b,0,0),b=null},this._touch=function(a){var d=function(a){var b=c.xy2val(a.originalEvent.touches[c.t].pageX,a.originalEvent.touches[c.t].pageY);b!=c.cv&&(c.cH&&c.cH(b)===!1||(c.change(c._validate(b)),c._draw()))};return this.t=b.c.t(a),d(a),b.c.d.bind("touchmove.k",d).bind("touchend.k",function(){b.c.d.unbind("touchmove.k touchend.k"),c.rH&&c.rH(c.cv)===!1||c.val(c.cv)}),this},this._mouse=function(a){var d=function(a){var b=c.xy2val(a.pageX,a.pageY);b!=c.cv&&(c.cH&&c.cH(b)===!1||(c.change(c._validate(b)),c._draw()))};return d(a),b.c.d.bind("mousemove.k",d).bind("keyup.k",function(a){if(27===a.keyCode){if(b.c.d.unbind("mouseup.k mousemove.k keyup.k"),c.eH&&c.eH()===!1)return;c.cancel()}}).bind("mouseup.k",function(){b.c.d.unbind("mousemove.k mouseup.k keyup.k"),c.rH&&c.rH(c.cv)===!1||c.val(c.cv)}),this},this._xy=function(){var a=this.$c.offset();return this.x=a.left,this.y=a.top,this},this._listen=function(){return this.o.readOnly?this.$.attr("readonly","readonly"):(this.$c.bind("mousedown",function(a){a.preventDefault(),c._xy()._mouse(a)}).bind("touchstart",function(a){a.preventDefault(),c._xy()._touch(a)}),this.listen()),this},this._configure=function(){return this.o.draw&&(this.dH=this.o.draw),this.o.change&&(this.cH=this.o.change),this.o.cancel&&(this.eH=this.o.cancel),this.o.release&&(this.rH=this.o.
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