/*
* Blur.js
* Copyright Jacob Kelley
* MIT License
*/
// Stackblur, courtesy of Mario Klingemann: http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
(function(l){l.fn.blurjs=function(e){function O(){this.a=this.b=this.g=this.r=0;this.next=null}var y=document.createElement("canvas"),P=!1,H=l(this).selector.replace(/[^a-zA-Z0-9]/g,"");if(y.getContext){var e=l.extend({source:"body",radius:5,overlay:"",offset:{x:0,y:0},optClass:"",cache:!1,cacheKeyPrefix:"blurjs-",draggable:!1,debug:!1},e),R=[512,512,456,512,328,456,335,512,405,328,271,456,388,335,292,512,454,405,364,328,298,271,496,456,420,388,360,335,312,292,273,512,482,454,428,405,383,364,345,
328,312,298,284,271,259,496,475,456,437,420,404,388,374,360,347,335,323,312,302,292,282,273,265,512,497,482,468,454,441,428,417,405,394,383,373,364,354,345,337,328,320,312,305,298,291,284,278,271,265,259,507,496,485,475,465,456,446,437,428,420,412,404,396,388,381,374,367,360,354,347,341,335,329,323,318,312,307,302,297,292,287,282,278,273,269,265,261,512,505,497,489,482,475,468,461,454,447,441,435,428,422,417,411,405,399,394,389,383,378,373,368,364,359,354,350,345,341,337,332,328,324,320,316,312,309,
305,301,298,294,291,287,284,281,278,274,271,268,265,262,259,257,507,501,496,491,485,480,475,470,465,460,456,451,446,442,437,433,428,424,420,416,412,408,404,400,396,392,388,385,381,377,374,370,367,363,360,357,354,350,347,344,341,338,335,332,329,326,323,320,318,315,312,310,307,304,302,299,297,294,292,289,287,285,282,280,278,275,273,271,269,267,265,263,261,259],S=[9,11,12,13,13,14,14,15,15,15,15,16,16,16,16,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,18,19,19,19,19,19,19,19,19,19,19,19,19,19,19,20,
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,
24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24];return this.each(function(){var A=l(this),I=l(e.source),B=I.css("backgroundImage").replace(/"/g,"").replace(/url\(|\)$/ig,"");ctx=y.getContext("2d");tempImg=new Image;tempImg.onload=function(){if(P)j=tempImg.src;else{y.style.display="none";y.width=tempImg.width;y.height=tempImg.height;ctx.drawImage(tempImg,0,0);var j=y.width,q=y.height,k=e.radius;if(!(isNaN(k)||1>k)){var k=
k|0,M=y.getContext("2d"),l;try{try{l=M.getImageData(0,0,j,q)}catch(L){try{netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead"),l=M.getImageData(0,0,j,q)}catch(T){throw alert("Cannot access local image"),Error("unable to access local image data: "+T);}}}catch(U){throw alert("Cannot access image"),Error("unable to access image data: "+U);}var c=l.data,u,z,a,d,f,J,g,h,i,v,w,x,m,n,o,r,s,t,C;u=k+k+1;var K=j-1,N=q-1,p=k+1,D=p*(p+1)/2,E=new O,b=E;for(a=1;a<u;a++)if(b=b.next=new O,a==
p)var Q=b;b.next=E;b=a=null;J=f=0;var F=R[k],G=S[k];for(z=0;z<q;z++){m=n=o=g=h=i=0;v=p*(r=c[f]);w=p*(s=c[f+1]);x=p*(t=c[f+2]);g+=D*r;h+=D*s;i+=D*t;b=E;for(a=0;a<p;a++)b.r=r,b.g=s,b.b=t,b=b.next;for(a=1;a<p;a++)d=f+((K<a?K:a)<<2),g+=(b.r=r=c[d])*(C=p-a),h+=(b.g=s=c[d+1])*C,i+=(b.b=t=c[d+2])*C,m+=r,n+=s,o+=t,b=b.next;a=E;b=Q;for(u=0;u<j;u++)c[f]=g*F>>G,c[f+1]=h*F>>G,c[f+2]=i*F>>G,g-=v,h-=w,i-=x,v-=a.r,w-=a.g,x-=a.b,d=J+((d=u+k+1)<K?d:K)<<2,m+=a.r=c[d],n+=a.g=c[d+1],o+=a.b=c[d+2],g+=m,h+=n,i+=o,a=a.next,
v+=r=b.r,w+=s=b.g,x+=t=b.b,m-=r,n-=s,o-=t,b=b.next,f+=4;J+=j}for(u=0;u<j;u++){n=o=m=h=i=g=0;f=u<<2;v=p*(r=c[f]);w=p*(s=c[f+1]);x=p*(t=c[f+2]);g+=D*r;h+=D*s;i+=D*t;b=E;for(a=0;a<p;a++)b.r=r,b.g=s,b.b=t,b=b.next;d=j;for(a=1;a<=k;a++)f=d+u<<2,g+=(b.r=r=c[f])*(C=p-a),h+=(b.g=s=c[f+1])*C,i+=(b.b=t=c[f+2])*C,m+=r,n+=s,o+=t,b=b.next,a<N&&(d+=j);f=u;a=E;b=Q;for(z=0;z<q;z++)d=f<<2,c[d]=g*F>>G,c[d+1]=h*F>>G,c[d+2]=i*F>>G,g-=v,h-=w,i-=x,v-=a.r,w-=a.g,x-=a.b,d=u+((d=z+p)<N?d:N)*j<<2,g+=m+=a.r=c[d],h+=n+=a.g=
c[d+1],i+=o+=a.b=c[d+2],a=a.next,v+=r=b.r,w+=s=b.g,x+=t=b.b,m-=r,n-=s,o-=t,b=b.next,f+=j}M.putImageData(l,0,0)}if(!1!=e.overlay)ctx.beginPath(),ctx.rect(0,0,tempImg.width,tempImg.width),ctx.fillStyle=e.overlay,ctx.fill();var j=y.toDataURL();if(e.cache)try{e.debug&&console.log("Cache Set"),localStorage.setItem(e.cacheKeyPrefix+H+"-"+B+"-data-image",j)}catch(V){console.log(V)}}q=I.css("backgroundAttachment");k="fixed"==q?"":"-"+(A.offset().left-I.offset().left-e.offset.x)+"px -"+(A.offset().top-I.offset().top-
e.offset.y)+"px";A.css({"background-image":'url("'+j+'")',"background-repeat":I.css("backgroundRepeat"),"background-position":k,"background-attachment":q});!1!=e.optClass&&A.addClass(e.optClass);e.draggable&&(A.css({"background-attachment":"fixed","background-position":"0 0"}),A.draggable())};Storage.prototype.cacheChecksum=function(j){var q="",k;for(k in j)var l=j[k],q="[object Object]"==l.toString()?q+(l.x.toString()+l.y.toString()+",").replace(/[^a-zA-Z0-9]/g,""):q+(l+",").replace(/[^a-zA-Z0-9]/g,
"");this.getItem(e.cacheKeyPrefix+H+"-"+B+"-options-cache")!=q&&(this.removeItem(e.cacheKeyPrefix+H+"-"+B+"-options-cache"),this.setItem(e.cacheKeyPrefix+H+"-"+B+"-options-cache",q),e.debug&&console.log("Settings Changed, Cache Emptied"))};var L=null;e.cache&&(localStorage.cacheChecksum(e),L=localStorage.getItem(e.cacheKeyPrefix+H+"-"+B+"-data-image"));null!=L?(e.debug&&console.log("Cache Used"),P=!0,tempImg.src=L):(e.debug&&console.log("Source Used"),tempImg.src=B)})}}})(jQuery);
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