root / trunk / web / dojo / dojox / html / metrics.js @ 13
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.html.metrics"]){ |
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| 9 | dojo._hasResource["dojox.html.metrics"]=true; |
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| 10 | dojo.provide("dojox.html.metrics");
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| 11 | (function(){
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| 12 | var _1=dojox.html.metrics;
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| 13 | _1.getFontMeasurements=function(){ |
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| 14 | 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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| 15 | if(dojo.isIE){
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| 16 | dojo.doc.documentElement.style.fontSize="100%";
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| 17 | } |
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| 18 | var _3=dojo.doc.createElement("div"); |
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| 19 | var ds=_3.style;
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| 20 | ds.position="absolute";
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| 21 | ds.left="-100px";
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| 22 | ds.top="0";
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| 23 | ds.width="30px";
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| 24 | ds.height="1000em";
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| 25 | ds.borderWidth="0";
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| 26 | ds.margin="0";
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| 27 | ds.padding="0";
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| 28 | ds.outline="0";
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| 29 | ds.lineHeight="1";
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| 30 | ds.overflow="hidden";
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| 31 | dojo.body().appendChild(_3); |
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| 32 | for(var p in _2){ |
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| 33 | ds.fontSize=p; |
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| 34 | _2[p]=Math.round(_3.offsetHeight*12/16)*16/12/1000; |
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| 35 | } |
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| 36 | dojo.body().removeChild(_3); |
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| 37 | _3=null;
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| 38 | return _2;
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| 39 | }; |
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| 40 | var _4=null; |
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| 41 | _1.getCachedFontMeasurements=function(_5){ |
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| 42 | if(_5||!_4){
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| 43 | _4=_1.getFontMeasurements(); |
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| 44 | } |
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| 45 | return _4;
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| 46 | }; |
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| 47 | var _6=null,_7={}; |
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| 48 | _1.getTextBox=function(_8,_9,_a){ |
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| 49 | var m,s;
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| 50 | if(!_6){
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| 51 | m=_6=dojo.doc.createElement("div");
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| 52 | var c=dojo.doc.createElement("div"); |
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| 53 | c.appendChild(m); |
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| 54 | s=c.style; |
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| 55 | s.overflow="scroll";
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| 56 | s.position="absolute";
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| 57 | s.left="0px";
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| 58 | s.top="-10000px";
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| 59 | s.width="1px";
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| 60 | s.height="1px";
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| 61 | s.visibility="hidden";
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| 62 | s.borderWidth="0";
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| 63 | s.margin="0";
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| 64 | s.padding="0";
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| 65 | s.outline="0";
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| 66 | dojo.body().appendChild(c); |
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| 67 | }else{
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| 68 | m=_6; |
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| 69 | } |
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| 70 | m.className="";
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| 71 | s=m.style; |
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| 72 | s.borderWidth="0";
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| 73 | s.margin="0";
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| 74 | s.padding="0";
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| 75 | s.outline="0";
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| 76 | if(arguments.length>1&&_9){ |
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| 77 | for(var i in _9){ |
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| 78 | if(i in _7){ |
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| 79 | continue;
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| 80 | } |
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| 81 | s[i]=_9[i]; |
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| 82 | } |
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| 83 | } |
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| 84 | if(arguments.length>2&&_a){ |
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| 85 | m.className=_a; |
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| 86 | } |
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| 87 | m.innerHTML=_8; |
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| 88 | var _b=dojo.position(m);
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| 89 | _b.w=m.parentNode.scrollWidth; |
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| 90 | return _b;
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| 91 | }; |
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| 92 | var _c={w:16,h:16}; |
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| 93 | _1.getScrollbar=function(){ |
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| 94 | return {w:_c.w,h:_c.h}; |
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| 95 | }; |
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| 96 | _1._fontResizeNode=null;
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| 97 | _1.initOnFontResize=function(_d){ |
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| 98 | var f=_1._fontResizeNode=dojo.doc.createElement("iframe"); |
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| 99 | var fs=f.style;
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| 100 | fs.position="absolute";
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| 101 | fs.width="5em";
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| 102 | fs.height="10em";
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| 103 | fs.top="-10000px";
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| 104 | if(dojo.isIE){
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| 105 | f.onreadystatechange=function(){ |
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| 106 | if(f.contentWindow.document.readyState=="complete"){ |
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| 107 | f.onresize=f.contentWindow.parent[dojox._scopeName].html.metrics._fontresize; |
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| 108 | } |
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| 109 | }; |
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| 110 | }else{
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| 111 | f.onload=function(){ |
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| 112 | f.contentWindow.onresize=f.contentWindow.parent[dojox._scopeName].html.metrics._fontresize; |
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| 113 | }; |
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| 114 | } |
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| 115 | f.setAttribute("src","javascript:'<html><head><script>if(\"loadFirebugConsole\" in window){window.loadFirebugConsole();}</script></head><body></body></html>'"); |
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| 116 | dojo.body().appendChild(f); |
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| 117 | _1.initOnFontResize=function(){ |
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| 118 | }; |
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| 119 | }; |
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| 120 | _1.onFontResize=function(){ |
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| 121 | }; |
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| 122 | _1._fontresize=function(){ |
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| 123 | _1.onFontResize(); |
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| 124 | }; |
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| 125 | dojo.addOnUnload(function(){
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| 126 | var f=_1._fontResizeNode;
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| 127 | if(f){
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| 128 | if(dojo.isIE&&f.onresize){
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| 129 | f.onresize=null;
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| 130 | }else{
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| 131 | if(f.contentWindow&&f.contentWindow.onresize){
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| 132 | f.contentWindow.onresize=null;
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| 133 | } |
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| 134 | } |
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| 135 | _1._fontResizeNode=null;
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| 136 | } |
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| 137 | }); |
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| 138 | dojo.addOnLoad(function(){
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| 139 | try{
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| 140 | var n=dojo.doc.createElement("div"); |
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| 141 | n.style.cssText="top:0;left:0;width:100px;height:100px;overflow:scroll;position:absolute;visibility:hidden;";
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| 142 | dojo.body().appendChild(n); |
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| 143 | _c.w=n.offsetWidth-n.clientWidth; |
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| 144 | _c.h=n.offsetHeight-n.clientHeight; |
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| 145 | dojo.body().removeChild(n); |
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| 146 | delete n;
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| 147 | } |
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| 148 | catch(e){
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| 149 | } |
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| 150 | if("fontSizeWatch" in dojo.config&&!!dojo.config.fontSizeWatch){ |
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| 151 | _1.initOnFontResize(); |
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| 152 | } |
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| 153 | }); |
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| 154 | })(); |
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| 155 | } |