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/*!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
*/
$(function(){"use strict";var k={},max=Math.max,min=Math.min;k.c={};k.c.d=$(document);k.c.t=function(e){return e.originalEvent.touches.length-1;};k.o=function(){var s=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=false;this.fgColor=null;this.pColor=null;this.dH=null;this.cH=null;this.eH=null;this.rH=null;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=$.extend({min:this.$.data('min')||0,max:this.$.data('max')||100,stopper:true,readOnly:this.$.data('readonly'),cursor:(this.$.data('cursor')===true&&30)||this.$.data('cursor')||0,thickness:this.$.data('thickness')||0.35,width:this.$.data('width')||200,height:this.$.data('height')||200,displayInput:this.$.data('displayinput')==null||this.$.data('displayinput'),displayPrevious:this.$.data('displayprevious'),fgColor:this.$.data('fgcolor')||'#87CEEB',inline:false,draw:null,change:null,cancel:null,release:null},this.o);if(this.$.is('fieldset')){this.v={};this.i=this.$.find('input')
this.i.each(function(k){var $this=$(this);s.i[k]=$this;s.v[k]=$this.val();$this.bind('change',function(){var val={};val[k]=$this.val();s.val(val);});});this.$.find('legend').remove();}else{this.i=this.$;this.v=this.$.val();(this.v=='')&&(this.v=this.o.min);this.$.bind('change',function(){s.val(s.$.val());});}
(!this.o.displayInput)&&this.$.hide();this.$c=$('<canvas width="'+
this.o.width+'px" height="'+
this.o.height+'px"></canvas>');this.c=this.$c[0].getContext("2d");this.$.wrap($('<div style="'+(this.o.inline?'display:inline;':'')+'width:'+this.o.width+'px;height:'+
this.o.height+'px;"></div>')).before(this.$c);if(this.v instanceof Object){this.cv={};this.copy(this.v,this.cv);}else{this.cv=this.v;}
this.$.bind("configure",cf).parent().bind("configure",cf);this._listen()._configure()._xy().init();this.isInit=true;this._draw();return this;};this._draw=function(){var d=true,c=document.createElement('canvas');c.width=s.o.width;c.height=s.o.height;s.g=c.getContext('2d');s.clear();s.dH&&(d=s.dH());(d!==false)&&s.draw();s.c.drawImage(c,0,0);c=null;};this._touch=function(e){var touchMove=function(e){var v=s.xy2val(e.originalEvent.touches[s.t].pageX,e.originalEvent.touches[s.t].pageY);if(v==s.cv)return;if(s.cH&&(s.cH(v)===false))return;s.change(v);s._draw();};this.t=k.c.t(e);touchMove(e);k.c.d.bind("touchmove.k",touchMove).bind("touchend.k",function(){k.c.d.unbind('touchmove.k touchend.k');if(s.rH&&(s.rH(s.cv)===false))return;s.val(s.cv);});return this;};this._mouse=function(e){var mouseMove=function(e){var v=s.xy2val(e.pageX,e.pageY);if(v==s.cv)return;if(s.cH&&(s.cH(v)===false))return;s.change(v);s._draw();};mouseMove(e);k.c.d.bind("mousemove.k",mouseMove).bind("keyup.k",function(e){if(e.keyCode===27){k.c.d.unbind("mouseup.k mousemove.k keyup.k");if(s.eH&&(s.eH()===false))return;s.cancel();}}).bind("mouseup.k",function(e){k.c.d.unbind('mousemove.k mouseup.k keyup.k');if(s.rH&&(s.rH(s.cv)===false))return;s.val(s.cv);});return this;};this._xy=function(){var o=this.$c.offset();this.x=o.left;this.y=o.top;return this;};this._listen=function(){if(!this.o.readOnly){this.$c.bind("mousedown",function(e){e.preventDefault();s._xy()._mouse(e);}).bind("touchstart",function(e){e.preventDefault();s._xy()._touch(e);});this.listen();}else{this.$.attr('readonly','readonly');}
return this;};this._configure=function(){if(this.o.draw)this.dH=this.o.draw;if(this.o.change)this.cH=this.o.change;if(this.o.cancel)this.eH=this.o.cancel;if(this.o.release)this.rH=this.o.release;if(this.o.displayPrevious){this.pColor=this.h2rgba(this.o.fgColor,"0.4");this.fgColor=this.h2rgba(this.o.fgColor,"0.6");}else{this.fgColor=this.o.fgColor;}
return this;};this._clear=function(){this.$c[0].width=this.$c[0].width;};this.listen=function(){};this.extend=function(){};this.init=function(){};this.change=function(v){};this.val=function(v){};this.xy2val=function(x,y){};this.draw=function(){};this.clear=function(){this._clear();};this.h2rgba=function(h,a){var rgb;h=h.substring(1,7)
rgb=[parseInt(h.substring(0,2),16),parseInt(h.substring(2,4),16),parseInt(h.substring(4,6),16)];return"rgba("+rgb[0]+","+rgb[1]+","+rgb[2]+","+a+")";};this.copy=function(f,t){for(var i in f){t[i]=f[i];}};};k.Dial=function(){k.o.call(this);this.startAngle=null;this.xy=null;this.radius=null;this.lineWidth=null;this.cursorExt=null;this.w2=null;this.PI2=2*Math.PI;this.extend=function(){this.o=$.extend({bgColor:this.$.data('bgcolor')||'#EEEEEE',angleOffset:this.$.data('angleoffset')||0,angleArc:this.$.data('anglearc')||360,inline:true},this.o);};this.val=function(v){if(null!=v){this.cv=this.o.stopper?max(min(v,this.o.max),this.o.min):v;this.v=this.cv;this.$.val(this.v);this._draw();}else{return this.v;}};this.xy2val=function(x,y){var a,ret;a=Math.atan2(x-(this.x+this.w2),-(y-this.y-this.w2))-this.angleOffset;if(this.angleArc!=this.PI2&&(a<0)&&(a>-0.5)){a=0;}else if(a<0){a+=this.PI2;}
ret=~~(0.5+(a*(this.o.max-this.o.min)/this.angleArc))
+this.o.min;this.o.stopper&&(ret=max(min(ret,this.o.max),this.o.min));return ret;};this.listen=function(){var s=this,mw=function(e){e.preventDefault();var ori=e.originalEvent,deltaX=ori.detail||ori.wheelDeltaX,deltaY=ori.detail||ori.wheelDeltaY,v=parseInt(s.$.val())+(deltaX>0||deltaY>0?1:deltaX<0||deltaY<0?-1:0);if(s.cH&&(s.cH(v)===false))return;s.val(v);},kval,to,m=1,kv={37:-1,38:1,39:1,40:-1};this.$.bind("keydown",function(e){var kc=e.keyCode;kval=parseInt(String.fromCharCode(kc));if(isNaN(kval)){(kc!==13)&&(kc!==8)&&(kc!==9)&&(kc!==189)&&e.preventDefault();if($.inArray(kc,[37,38,39,40])>-1){e.preventDefault();var v=parseInt(s.$.val())+kv[kc]*m;s.o.stopper&&(v=max(min(v,s.o.max),s.o.min));s.change(v);s._draw();to=window.setTimeout(function(){m*=2;},30);}}}).bind("keyup",function(e){if(isNaN(kval)){if(to){window.clearTimeout(to);to=null;m=1;s.val(s.$.val());}}else{(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.$.val(this.v);this.w2=this.o.width/2;this.cursorExt=this.o.cursor/100;this.xy=this.w2;this.lineWidth=this.xy*this.o.thickness;this.radius=this.xy-this.lineWidth/2;this.o.angleOffset&&(this.o.angleOffset=isNaN(this.o.angleOffset)?0:this.o.angleOffset);this.o.angleArc&&(this.o.angleArc=isNaN(this.o.angleArc)?this.PI2:this.o.angleArc);this.angleOffset=this.o.angleOffset*Math.PI/180;this.angleArc=this.o.angleArc*Math.PI/180;this.startAngle=1.5*Math.PI+this.angleOffset;this.endAngle=1.5*Math.PI+this.angleOffset+this.angleArc;var s=max(String(Math.abs(this.o.max)).length,String(Math.abs(this.o.min)).length,2)+2;this.o.displayInput&&this.i.css({'width':((this.o.width/2+4)>>0)+'px','height':((this.o.width/3)>>0)+'px','position':'absolute','vertical-align':'middle','margin-top':((this.o.width/3)>>0)+'px','margin-left':'-'+((this.o.width*3/4+2)>>0)+'px','border':0,'background':'none','font':'bold '+((this.o.width/s)>>0)+'px Arial','text-align':'center','color':this.o.fgColor,'padding':'0px','-webkit-appearance':'none'})||this.i.css({'width':'0px','visibility':'hidden'});};this.change=function(v){this.cv=v;this.$.val(v);};this.angle=function(v){return(v-this.o.min)*this.angleArc/(this.o.max-this.o.min);};this.draw=function(){var c=this.g,a=this.angle(this.cv),sat=this.startAngle,eat=sat+a,sa,ea,r=1;c.lineWidth=this.lineWidth;this.o.cursor&&(sat=eat-this.cursorExt)&&(eat=eat+this.cursorExt);c.beginPath();c.strokeStyle=this.o.bgColor;c.arc(this.xy,this.xy,this.radius,this.endAngle,this.startAngle,true);c.stroke();if(this.o.displayPrevious){ea=this.startAngle+this.angle(this.v);sa=this.startAngle;this.o.cursor&&(sa=ea-this.cursorExt)&&(ea=ea+this.cursorExt);c.beginPath();c.strokeStyle=this.pColor;c.arc(this.xy,this.xy,this.radius,sa,ea,false);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,sat,eat,false);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();};});
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