tinycon.min.js

/*!
 * Tinycon - A small library for manipulating the Favicon
 * Tom Moor, http://tommoor.com
 * Copyright (c) 2012 Tom Moor
 * MIT Licensed
 * @version 0.5
 */
/*! Minor changes by cmaish */
(function(){var Tinycon={};var currentFavicon=null;var originalFavicon=null;var originalTitle=document.title;var faviconImage=null;var canvas=null;var options={};var defaults={width:7,height:9,font:"10px arial",colour:"#ffffff",background:"#F03D25",fallback:true,fallbackTitle:function(originalTitle,label,forced,additionalData){if(label==null||label.length==0){return originalTitle;}return"("+label+") "+originalTitle;},abbreviate:true};var ua=(function(){var agent=navigator.userAgent.toLowerCase();return function(browser){return agent.indexOf(browser)!==-1;};}());var browser={ie:ua("msie"),chrome:ua("chrome"),webkit:ua("chrome")||ua("safari"),safari:ua("safari")&&!ua("chrome"),mozilla:ua("mozilla")&&!ua("chrome")&&!ua("safari")};var getFaviconTag=function(){var links=document.getElementsByTagName("link");for(var i=0,len=links.length;i<len;i++){if((links[i].getAttribute("rel")||"").match(/\bicon\b/)){return links[i];}}return false;};var removeFaviconTag=function(){var links=document.getElementsByTagName("link");var head=document.getElementsByTagName("head")[0];for(var i=0,len=links.length;i<len;i++){var exists=(typeof(links[i])!=="undefined");if(exists&&(links[i].getAttribute("rel")||"").match(/\bicon\b/)){head.removeChild(links[i]);}}};var getCurrentFavicon=function(){if(!originalFavicon||!currentFavicon){var tag=getFaviconTag();originalFavicon=currentFavicon=tag?tag.getAttribute("href"):"/favicon.ico";}return currentFavicon;};var getCanvas=function(){if(!canvas){canvas=document.createElement("canvas");canvas.width=16;canvas.height=16;}return canvas;};var setFaviconTag=function(url){removeFaviconTag();var link=document.createElement("link");link.type="image/x-icon";link.rel="icon";link.href=url;document.getElementsByTagName("head")[0].appendChild(link);};var log=function(message){if(window.console){window.console.log(message);}};var drawFavicon=function(label,colour,additionalData){var faviconSupported=getCanvas().getContext&&!browser.ie&&!browser.safari;if(!faviconSupported||options.fallback==="force"){if(options.fallback!==false&&typeof options.fallbackTitle==="function"){document.title=options.fallbackTitle(originalTitle,label,!faviconSupported,additionalData);}if(!faviconSupported){return false;}}var context=getCanvas().getContext("2d");var colour=colour||"#000000";var src=getCurrentFavicon();faviconImage=new Image();faviconImage.onload=function(){context.clearRect(0,0,16,16);context.drawImage(faviconImage,0,0,faviconImage.width,faviconImage.height,0,0,16,16);if((label+"").length>0){drawBubble(context,label,colour);}refreshFavicon();};if(!src.match(/^data/)){faviconImage.crossOrigin="anonymous";}faviconImage.src=src;return true;};var drawBubble=function(context,label,colour){if(typeof label=="number"&&label>99&&options.abbreviate){label=abbreviateNumber(label);}var len=(label+"").length-1;var width=options.width+(6*len);var w=16-width;var h=16-options.height;context.font=(browser.webkit?"bold ":"")+options.font;context.fillStyle=options.background;context.strokeStyle=options.background;context.lineWidth=1;context.fillRect(w,h,width-1,options.height);context.beginPath();context.moveTo(w-0.5,h+1);context.lineTo(w-0.5,15);context.stroke();context.beginPath();context.moveTo(15.5,h+1);context.lineTo(15.5,15);context.stroke();context.beginPath();context.strokeStyle="rgba(0,0,0,0.3)";context.moveTo(w,16);context.lineTo(15,16);context.stroke();context.fillStyle=options.colour;context.textAlign="right";context.textBaseline="top";context.fillText(label,15,browser.mozilla?7:6);};var refreshFavicon=function(){if(!getCanvas().getContext){return;}setFaviconTag(getCanvas().toDataURL());};var abbreviateNumber=function(label){var metricPrefixes=[["G",1000000000],["M",1000000],["k",1000]];for(var i=0;i<metricPrefixes.length;++i){if(label>=metricPrefixes[i][1]){label=round(label/metricPrefixes[i][1])+metricPrefixes[i][0];break;}}return label;};var round=function(value,precision){var number=new Number(value);return number.toFixed(precision);};Tinycon.setOptions=function(custom){options={};for(var key in defaults){options[key]=custom.hasOwnProperty(key)?custom[key]:defaults[key];}return this;};Tinycon.setImage=function(url){currentFavicon=url;refreshFavicon();return this;};Tinycon.setBubble=function(label,colour,additionalData){label=label||"";return drawFavicon(label,colour,additionalData);};Tinycon.reset=function(){setFaviconTag(originalFavicon);};Tinycon.setOptions(defaults);window.Tinycon=Tinycon;})();