13 lines
6.9 KiB
JavaScript
13 lines
6.9 KiB
JavaScript
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/**
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* DD_belatedPNG: Adds IE6 support: PNG images for CSS background-image and HTML <IMG/>.
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* Author: Drew Diller
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* Email: drew.diller@gmail.com
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* URL: http://www.dillerdesign.com/experiment/DD_belatedPNG/
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* Version: 0.0.8a
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* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
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*
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* Example usage:
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* DD_belatedPNG.fix('.png_bg'); // argument is a CSS selector
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* DD_belatedPNG.fixPng( someNode ); // argument is an HTMLDomElement
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**/
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var DD_belatedPNG={ns:"DD_belatedPNG",imgSize:{},delay:10,nodesFixed:0,createVmlNameSpace:function(){if(document.namespaces&&!document.namespaces[this.ns]){document.namespaces.add(this.ns,"urn:schemas-microsoft-com:vml")}},createVmlStyleSheet:function(){var b,a;b=document.createElement("style");b.setAttribute("media","screen");document.documentElement.firstChild.insertBefore(b,document.documentElement.firstChild.firstChild);if(b.styleSheet){b=b.styleSheet;b.addRule(this.ns+"\\:*","{behavior:url(#default#VML)}");b.addRule(this.ns+"\\:shape","position:absolute;");b.addRule("img."+this.ns+"_sizeFinder","behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;");this.screenStyleSheet=b;a=document.createElement("style");a.setAttribute("media","print");document.documentElement.firstChild.insertBefore(a,document.documentElement.firstChild.firstChild);a=a.styleSheet;a.addRule(this.ns+"\\:*","{display: none !important;}");a.addRule("img."+this.ns+"_sizeFinder","{display: none !important;}")}},readPropertyChange:function(){var b,c,a;b=event.srcElement;if(!b.vmlInitiated){return}if(event.propertyName.search("background")!=-1||event.propertyName.search("border")!=-1){DD_belatedPNG.applyVML(b)}if(event.propertyName=="style.display"){c=(b.currentStyle.display=="none")?"none":"block";for(a in b.vml){if(b.vml.hasOwnProperty(a)){b.vml[a].shape.style.display=c}}}if(event.propertyName.search("filter")!=-1){DD_belatedPNG.vmlOpacity(b)}},vmlOpacity:function(b){if(b.currentStyle.filter.search("lpha")!=-1){var a=b.currentStyle.filter;a=parseInt(a.substring(a.lastIndexOf("=")+1,a.lastIndexOf(")")),10)/100;b.vml.color.shape.style.filter=b.currentStyle.filter;b.vml.image.fill.opacity=a}},handlePseudoHover:function(a){setTimeout(function(){DD_belatedPNG.applyVML(a)},1)},fix:function(a){if(this.screenStyleSheet){var c,b;c=a.split(",");for(b=0;b<c.length;b++){this.screenStyleSheet.addRule(c[b],"behavior:expression(DD_belatedPNG.fixPng(this))")}}},applyVML:function(a){a.runtimeStyle.cssText="";this.vmlFill(a);this.vmlOffsets(a);this.vmlOpacity(a);if(a.isImg){this.copyImageBorders(a)}},attachHandlers:function(i){var d,c,g,e,b,f;d=this;c={resize:"vmlOffsets",move:"vmlOffsets"};if(i.nodeName=="A"){e={mouseleave:"handlePseudoHover",mouseenter:"handlePseudoHover",focus:"handlePseudoHover",blur:"handlePseudoHover"};for(b in e){if(e.hasOwnProperty(b)){c[b]=e[b]}}}for(f in c){if(c.hasOwnProperty(f)){g=function(){d[c[f]](i)};i.attachEvent("on"+f,g)}}i.attachEvent("onpropertychange",this.readPropertyChange)},giveLayout:function(a){a.style.zoom=1;if(a.currentStyle.position=="static"){a.style.position="relative"}},copyImageBorders:function(b){var c,a;c={borderStyle:true,borderWidth:true,borderColor:true};for(a in c){if(c.hasOwnProperty(a)){b.vml.color.shape.style[a]=b.currentStyle[a]}}},vmlFill:function(e){if(!e.currentStyle){return}else{var d,f,g,b,a,c;d=e.currentStyle}for(b in e.vml){if(e.vml.hasOwnProperty(b)){e.vml[b].shape.style.zIndex=d.zIndex}}e.runtimeStyle.backgroundColor="";e.runtimeStyle.backgroundImage="";f=true;if(d.backgroundImage!="none"||e.isImg){if(!e.isImg){e.vmlBg=d.backgroundImage;e.vmlBg=e.vmlBg.substr(5,e.vmlBg.lastIndexOf('")')-5)}else{e.vmlBg=e.src}g=this;if(!g.imgSize[e.vmlBg]){a=document.createElement("img");g.imgSize[e.vmlBg]=a;a.className=g.ns+"_sizeFinder";a.runtimeStyle.cssText="behavior:none; position:absolute; left:-10000px; top:-10000px; border:none; margin:0; padding:0;";c=function(){this.width=this.offsetWidth;this.height=this.offsetHeight;g.vmlOffsets(e)};a.attachEvent("onload",c);a.src=e.vmlBg;a.removeAttribute("width");a.removeAttribute("height");document.body.insertBefore(a,document.body.firstChild)}e.vml.image.fill.src=e.vmlBg;f=false}e.vml.image.fill.on=!f;e.vml.image.fill.color="none";e.vml.color.shape.style.backgroundColor=d.backgroundColor;e.runtimeStyle.backgroundImage="none";e.runtimeStyle.backgroundColor="transparent"},vmlOffsets:function(d){var h,n,a,e,g,m,f,l,j,i,k;h=d.currentStyle;n={W:d.clientWidth+1,H:d.clientHeight+1,w:this.imgSize[d.vmlBg].width,h:this.imgSize[d.vmlBg].heig
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