root / trunk / web / dojo / dojox / html / metrics.js @ 10
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.html.metrics"]){ |
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dojo._hasResource["dojox.html.metrics"]=true; |
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dojo.provide("dojox.html.metrics");
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(function(){
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var _1=dojox.html.metrics;
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_1.getFontMeasurements=function(){ |
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var _2={"1em":0,"1ex":0,"100%":0,"12pt":0,"16px":0,"xx-small":0,"x-small":0,"small":0,"medium":0,"large":0,"x-large":0,"xx-large":0}; |
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if(dojo.isIE){
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dojo.doc.documentElement.style.fontSize="100%";
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} |
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var _3=dojo.doc.createElement("div"); |
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var ds=_3.style;
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ds.position="absolute";
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ds.left="-100px";
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ds.top="0";
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ds.width="30px";
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ds.height="1000em";
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ds.borderWidth="0";
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ds.margin="0";
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ds.padding="0";
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ds.outline="0";
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ds.lineHeight="1";
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ds.overflow="hidden";
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dojo.body().appendChild(_3); |
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for(var p in _2){ |
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ds.fontSize=p; |
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_2[p]=Math.round(_3.offsetHeight*12/16)*16/12/1000; |
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} |
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dojo.body().removeChild(_3); |
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_3=null;
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return _2;
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}; |
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var _4=null; |
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_1.getCachedFontMeasurements=function(_5){ |
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if(_5||!_4){
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_4=_1.getFontMeasurements(); |
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} |
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return _4;
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}; |
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var _6=null,_7={}; |
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_1.getTextBox=function(_8,_9,_a){ |
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var m,s;
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if(!_6){
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m=_6=dojo.doc.createElement("div");
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var c=dojo.doc.createElement("div"); |
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c.appendChild(m); |
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s=c.style; |
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s.overflow="scroll";
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s.position="absolute";
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s.left="0px";
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s.top="-10000px";
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s.width="1px";
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s.height="1px";
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s.visibility="hidden";
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s.borderWidth="0";
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s.margin="0";
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s.padding="0";
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s.outline="0";
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dojo.body().appendChild(c); |
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}else{
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m=_6; |
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} |
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m.className="";
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s=m.style; |
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s.borderWidth="0";
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s.margin="0";
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s.padding="0";
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s.outline="0";
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if(arguments.length>1&&_9){ |
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for(var i in _9){ |
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if(i in _7){ |
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continue;
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} |
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s[i]=_9[i]; |
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} |
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} |
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if(arguments.length>2&&_a){ |
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m.className=_a; |
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} |
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m.innerHTML=_8; |
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var _b=dojo.position(m);
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_b.w=m.parentNode.scrollWidth; |
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return _b;
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}; |
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var _c={w:16,h:16}; |
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_1.getScrollbar=function(){ |
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return {w:_c.w,h:_c.h}; |
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}; |
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_1._fontResizeNode=null;
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_1.initOnFontResize=function(_d){ |
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var f=_1._fontResizeNode=dojo.doc.createElement("iframe"); |
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var fs=f.style;
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fs.position="absolute";
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fs.width="5em";
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fs.height="10em";
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fs.top="-10000px";
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if(dojo.isIE){
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f.onreadystatechange=function(){ |
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if(f.contentWindow.document.readyState=="complete"){ |
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f.onresize=f.contentWindow.parent[dojox._scopeName].html.metrics._fontresize; |
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} |
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}; |
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}else{
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f.onload=function(){ |
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f.contentWindow.onresize=f.contentWindow.parent[dojox._scopeName].html.metrics._fontresize; |
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}; |
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} |
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f.setAttribute("src","javascript:'<html><head><script>if(\"loadFirebugConsole\" in window){window.loadFirebugConsole();}</script></head><body></body></html>'"); |
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dojo.body().appendChild(f); |
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_1.initOnFontResize=function(){ |
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}; |
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}; |
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_1.onFontResize=function(){ |
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}; |
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_1._fontresize=function(){ |
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_1.onFontResize(); |
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}; |
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dojo.addOnUnload(function(){
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var f=_1._fontResizeNode;
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if(f){
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if(dojo.isIE&&f.onresize){
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f.onresize=null;
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}else{
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if(f.contentWindow&&f.contentWindow.onresize){
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f.contentWindow.onresize=null;
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} |
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} |
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_1._fontResizeNode=null;
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} |
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}); |
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dojo.addOnLoad(function(){
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try{
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var n=dojo.doc.createElement("div"); |
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n.style.cssText="top:0;left:0;width:100px;height:100px;overflow:scroll;position:absolute;visibility:hidden;";
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dojo.body().appendChild(n); |
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_c.w=n.offsetWidth-n.clientWidth; |
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_c.h=n.offsetHeight-n.clientHeight; |
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dojo.body().removeChild(n); |
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delete n;
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} |
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catch(e){
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} |
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if("fontSizeWatch" in dojo.config&&!!dojo.config.fontSizeWatch){ |
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_1.initOnFontResize(); |
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} |
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}); |
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})(); |
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} |