root / trunk / web / dojo / dojox / gfx / VectorText.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.gfx.VectorText"]){ |
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| 9 | dojo._hasResource["dojox.gfx.VectorText"]=true; |
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| 10 | dojo.provide("dojox.gfx.VectorText");
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| 11 | dojo.require("dojox.gfx");
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| 12 | dojo.require("dojox.xml.DomParser");
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| 13 | dojo.require("dojox.html.metrics");
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| 14 | (function(){
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| 15 | dojo.mixin(dojox.gfx,{vectorFontFitting:{NONE:0,FLOW:1,FIT:2},defaultVectorText:{type:"vectortext",x:0,y:0,width:null,height:null,text:"",align:"start",decoration:"none",fitting:0,leading:1.5},defaultVectorFont:{type:"vectorfont",size:"10pt",family:null},_vectorFontCache:{},_svgFontCache:{},getVectorFont:function(_1){
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| 16 | if(dojox.gfx._vectorFontCache[_1]){
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| 17 | return dojox.gfx._vectorFontCache[_1];
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| 18 | } |
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| 19 | return new dojox.gfx.VectorFont(_1); |
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| 20 | }}); |
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| 21 | dojo.declare("dojox.gfx.VectorFont",null,{_entityRe:/&(quot|apos|lt|gt|amp|#x[^;]+|#\d+);/g,_decodeEntitySequence:function(_2){ |
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| 22 | if(!_2.match(this._entityRe)){ |
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| 23 | return;
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| 24 | } |
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| 25 | var _3={amp:"&",apos:"'",quot:"\"",lt:"<",gt:">"}; |
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| 26 | var r,_4=""; |
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| 27 | while((r=this._entityRe.exec(_2))!==null){ |
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| 28 | if(r[1].charAt(1)=="x"){ |
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| 29 | _4+=String.fromCharCode(parseInt(r[1].slice(2),16)); |
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| 30 | }else{
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| 31 | if(!isNaN(parseInt(r[1].slice(1),10))){ |
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| 32 | _4+=String.fromCharCode(parseInt(r[1].slice(1),10)); |
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| 33 | }else{
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| 34 | _4+=_3[r[1]]||""; |
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| 35 | } |
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| 36 | } |
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| 37 | } |
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| 38 | return _4;
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| 39 | },_parse:function(_5,_6){ |
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| 40 | var _7=dojox.gfx._svgFontCache[_6]||dojox.xml.DomParser.parse(_5);
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| 41 | var f=_7.documentElement.byName("font")[0],_8=_7.documentElement.byName("font-face")[0]; |
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| 42 | var _9=parseFloat(_8.getAttribute("units-per-em")||1000,10); |
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| 43 | var _a={x:parseFloat(f.getAttribute("horiz-adv-x"),10),y:parseFloat(f.getAttribute("vert-adv-y")||0,10)}; |
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| 44 | if(!_a.y){
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| 45 | _a.y=_9; |
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| 46 | } |
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| 47 | var _b={horiz:{x:parseFloat(f.getAttribute("horiz-origin-x")||0,10),y:parseFloat(f.getAttribute("horiz-origin-y")||0,10)},vert:{x:parseFloat(f.getAttribute("vert-origin-x")||0,10),y:parseFloat(f.getAttribute("vert-origin-y")||0,10)}}; |
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| 48 | var _c=_8.getAttribute("font-family"),_d=_8.getAttribute("font-style")||"all",_e=_8.getAttribute("font-variant")||"normal",_f=_8.getAttribute("font-weight")||"all",_10=_8.getAttribute("font-stretch")||"normal",_11=_8.getAttribute("unicode-range")||"U+0-10FFFF",_12=_8.getAttribute("panose-1")||"0 0 0 0 0 0 0 0 0 0",_13=_8.getAttribute("cap-height"),_14=parseFloat(_8.getAttribute("ascent")||(_9-_b.vert.y),10),_15=parseFloat(_8.getAttribute("descent")||_b.vert.y,10),_16={}; |
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| 49 | var _17=_c;
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| 50 | if(_8.byName("font-face-name")[0]){ |
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| 51 | _17=_8.byName("font-face-name")[0].getAttribute("name"); |
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| 52 | } |
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| 53 | if(dojox.gfx._vectorFontCache[_17]){
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| 54 | return;
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| 55 | } |
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| 56 | dojo.forEach(["alphabetic","ideographic","mathematical","hanging"],function(_18){ |
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| 57 | var a=_8.getAttribute(_18);
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| 58 | if(a!==null){ |
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| 59 | _16[_18]=parseFloat(a,10);
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| 60 | } |
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| 61 | }); |
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| 62 | var _19=parseFloat(_7.documentElement.byName("missing-glyph")[0].getAttribute("horiz-adv-x")||_a.x,10); |
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| 63 | var _1a={},_1b={},g=_7.documentElement.byName("glyph"); |
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| 64 | dojo.forEach(g,function(_1c){
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| 65 | var _1d=_1c.getAttribute("unicode"),_17=_1c.getAttribute("glyph-name"),_1e=parseFloat(_1c.getAttribute("horiz-adv-x")||_a.x,10),_1f=_1c.getAttribute("d"); |
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| 66 | if(_1d.match(this._entityRe)){ |
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| 67 | _1d=this._decodeEntitySequence(_1d);
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| 68 | } |
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| 69 | var o={code:_1d,name:_17,xAdvance:_1e,path:_1f}; |
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| 70 | _1a[_1d]=o; |
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| 71 | _1b[_17]=o; |
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| 72 | },this);
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| 73 | var _20=_7.documentElement.byName("hkern"); |
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| 74 | dojo.forEach(_20,function(_21,i){
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| 75 | var k=-parseInt(_21.getAttribute("k"),10); |
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| 76 | var u1=_21.getAttribute("u1"),g1=_21.getAttribute("g1"),u2=_21.getAttribute("u2"),g2=_21.getAttribute("g2"),gl; |
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| 77 | if(u1){
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| 78 | u1=this._decodeEntitySequence(u1);
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| 79 | if(_1a[u1]){
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| 80 | gl=_1a[u1]; |
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| 81 | } |
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| 82 | }else{
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| 83 | if(_1b[g1]){
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| 84 | gl=_1b[g1]; |
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| 85 | } |
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| 86 | } |
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| 87 | if(gl){
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| 88 | if(!gl.kern){
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| 89 | gl.kern={};
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| 90 | } |
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| 91 | if(u2){
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| 92 | u2=this._decodeEntitySequence(u2);
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| 93 | gl.kern[u2]={x:k};
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| 94 | }else{
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| 95 | if(_1b[g2]){
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| 96 | gl.kern[_1b[g2].code]={x:k};
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| 97 | } |
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| 98 | } |
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| 99 | } |
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| 100 | },this);
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| 101 | dojo.mixin(this,{family:_c,name:_17,style:_d,variant:_e,weight:_f,stretch:_10,range:_11,viewbox:{width:_9,height:_9},origin:_b,advance:dojo.mixin(_a,{missing:{x:_19,y:_19}}),ascent:_14,descent:_15,baseline:_16,glyphs:_1a}); |
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| 102 | dojox.gfx._vectorFontCache[_17]=this;
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| 103 | dojox.gfx._vectorFontCache[_6]=this;
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| 104 | if(_17!=_c&&!dojox.gfx._vectorFontCache[_c]){
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| 105 | dojox.gfx._vectorFontCache[_c]=this;
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| 106 | } |
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| 107 | if(!dojox.gfx._svgFontCache[_6]){
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| 108 | dojox.gfx._svgFontCache[_6]=_7; |
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| 109 | } |
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| 110 | },_clean:function(){ |
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| 111 | var _22=this.name,_23=this.family; |
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| 112 | dojo.forEach(["family","name","style","variant","weight","stretch","range","viewbox","origin","advance","ascent","descent","baseline","glyphs"],function(_24){ |
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| 113 | try{
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| 114 | delete this[_24]; |
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| 115 | } |
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| 116 | catch(e){
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| 117 | } |
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| 118 | },this);
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| 119 | if(dojox.gfx._vectorFontCache[_22]){
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| 120 | delete dojox.gfx._vectorFontCache[_22];
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| 121 | } |
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| 122 | if(dojox.gfx._vectorFontCache[_23]){
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| 123 | delete dojox.gfx._vectorFontCache[_23];
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| 124 | } |
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| 125 | return this; |
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| 126 | },constructor:function(url){ |
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| 127 | this._defaultLeading=1.5; |
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| 128 | if(url!==undefined){ |
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| 129 | this.load(url);
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| 130 | } |
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| 131 | },load:function(url){ |
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| 132 | this.onLoadBegin(url.toString());
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| 133 | this._parse(dojox.gfx._svgFontCache[url.toString()]||dojo._getText(url.toString()),url.toString());
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| 134 | this.onLoad(this); |
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| 135 | return this; |
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| 136 | },initialized:function(){ |
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| 137 | return (this.glyphs!==null); |
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| 138 | },_round:function(n){ |
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| 139 | return Math.round(1000*n)/1000; |
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| 140 | },_leading:function(_25){ |
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| 141 | return this.viewbox.height*(_25||this._defaultLeading); |
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| 142 | },_normalize:function(str){ |
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| 143 | return str.replace(/\s+/g,String.fromCharCode(32)); |
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| 144 | },_getWidth:function(_26){ |
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| 145 | var w=0,_27=0,_28=null; |
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| 146 | dojo.forEach(_26,function(_29,i){
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| 147 | _27=_29.xAdvance; |
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| 148 | if(_26[i]&&_29.kern&&_29.kern[_26[i].code]){
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| 149 | _27+=_29.kern[_26[i].code].x; |
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| 150 | } |
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| 151 | w+=_27; |
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| 152 | _28=_29; |
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| 153 | }); |
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| 154 | if(_28&&_28.code==" "){ |
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| 155 | w-=_28.xAdvance; |
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| 156 | } |
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| 157 | return this._round(w); |
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| 158 | },_getLongestLine:function(_2a){ |
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| 159 | var _2b=0,idx=0; |
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| 160 | dojo.forEach(_2a,function(_2c,i){
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| 161 | var max=Math.max(_2b,this._getWidth(_2c)); |
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| 162 | if(max>_2b){
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| 163 | _2b=max; |
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| 164 | idx=i; |
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| 165 | } |
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| 166 | },this);
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| 167 | return {width:_2b,index:idx,line:_2a[idx]}; |
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| 168 | },_trim:function(_2d){ |
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| 169 | var fn=function(arr){ |
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| 170 | if(!arr.length){
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| 171 | return;
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| 172 | } |
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| 173 | if(arr[arr.length-1].code==" "){ |
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| 174 | arr.splice(arr.length-1,1); |
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| 175 | } |
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| 176 | if(!arr.length){
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| 177 | return;
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| 178 | } |
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| 179 | if(arr[0].code==" "){ |
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| 180 | arr.splice(0,1); |
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| 181 | } |
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| 182 | }; |
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| 183 | if(dojo.isArray(_2d[0])){ |
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| 184 | dojo.forEach(_2d,fn); |
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| 185 | }else{
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| 186 | fn(_2d); |
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| 187 | } |
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| 188 | return _2d;
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| 189 | },_split:function(_2e,_2f){ |
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| 190 | var w=this._getWidth(_2e),_30=Math.floor(w/_2f),_31=[],cw=0,c=[],_32=false; |
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| 191 | for(var i=0,l=_2e.length;i<l;i++){ |
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| 192 | if(_2e[i].code==" "){ |
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| 193 | _32=true;
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| 194 | } |
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| 195 | cw+=_2e[i].xAdvance; |
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| 196 | if(i+1<l&&_2e[i].kern&&_2e[i].kern[_2e[i+1].code]){ |
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| 197 | cw+=_2e[i].kern[_2e[i+1].code].x;
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| 198 | } |
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| 199 | if(cw>=_30){
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| 200 | var chr=_2e[i];
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| 201 | while(_32&&chr.code!=" "&&i>=0){ |
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| 202 | chr=c.pop(); |
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| 203 | i--; |
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| 204 | } |
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| 205 | _31.push(c); |
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| 206 | c=[]; |
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| 207 | cw=0;
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| 208 | _32=false;
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| 209 | } |
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| 210 | c.push(_2e[i]); |
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| 211 | } |
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| 212 | if(c.length){
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| 213 | _31.push(c); |
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| 214 | } |
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| 215 | return this._trim(_31); |
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| 216 | },_getSizeFactor:function(_33){ |
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| 217 | _33+="";
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| 218 | var _34=dojox.html.metrics.getCachedFontMeasurements(),_35=this.viewbox.height,f=_34["1em"],_36=parseFloat(_33,10); |
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| 219 | if(_33.indexOf("em")>-1){ |
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| 220 | return this._round((_34["1em"]*_36)/_35); |
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| 221 | }else{
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| 222 | if(_33.indexOf("ex")>-1){ |
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| 223 | return this._round((_34["1ex"]*_36)/_35); |
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| 224 | }else{
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| 225 | if(_33.indexOf("pt")>-1){ |
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| 226 | return this._round(((_34["12pt"]/12)*_36)/_35); |
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| 227 | }else{
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| 228 | if(_33.indexOf("px")>-1){ |
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| 229 | return this._round(((_34["16px"]/16)*_36)/_35); |
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| 230 | }else{
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| 231 | if(_33.indexOf("%")>-1){ |
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| 232 | return this._round((_34["1em"]*(_36/100))/_35); |
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| 233 | }else{
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| 234 | f=_34[_33]||_34.medium; |
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| 235 | return this._round(f/_35); |
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| 236 | } |
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| 237 | } |
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| 238 | } |
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| 239 | } |
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| 240 | } |
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| 241 | },_getFitFactor:function(_37,w,h,l){ |
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| 242 | if(!h){
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| 243 | return this._round(w/this._getWidth(_37)); |
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| 244 | }else{
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| 245 | var _38=this._getLongestLine(_37).width,_39=(_37.length*(this.viewbox.height*l))-((this.viewbox.height*l)-this.viewbox.height); |
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| 246 | return this._round(Math.min(w/_38,h/_39)); |
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| 247 | } |
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| 248 | },_getBestFit:function(_3a,w,h,_3b){ |
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| 249 | var _3c=32,_3d=0,_3e=_3c; |
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| 250 | while(_3c>0){ |
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| 251 | var f=this._getFitFactor(this._split(_3a,_3c),w,h,_3b); |
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| 252 | if(f>_3d){
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| 253 | _3d=f; |
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| 254 | _3e=_3c; |
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| 255 | } |
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| 256 | _3c--; |
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| 257 | } |
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| 258 | return {scale:_3d,lines:this._split(_3a,_3e)}; |
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| 259 | },_getBestFlow:function(_3f,w,_40){ |
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| 260 | var _41=[],cw=0,c=[],_42=false; |
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| 261 | for(var i=0,l=_3f.length;i<l;i++){ |
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| 262 | if(_3f[i].code==" "){ |
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| 263 | _42=true;
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| 264 | } |
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| 265 | var tw=_3f[i].xAdvance;
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| 266 | if(i+1<l&&_3f[i].kern&&_3f[i].kern[_3f[i+1].code]){ |
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| 267 | tw+=_3f[i].kern[_3f[i+1].code].x;
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| 268 | } |
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| 269 | cw+=_40*tw; |
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| 270 | if(cw>=w){
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| 271 | var chr=_3f[i];
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| 272 | while(_42&&chr.code!=" "&&i>=0){ |
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| 273 | chr=c.pop(); |
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| 274 | i--; |
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| 275 | } |
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| 276 | _41.push(c); |
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| 277 | c=[]; |
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| 278 | cw=0;
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| 279 | _42=false;
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| 280 | } |
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| 281 | c.push(_3f[i]); |
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| 282 | } |
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| 283 | if(c.length){
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| 284 | _41.push(c); |
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| 285 | } |
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| 286 | return this._trim(_41); |
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| 287 | },getWidth:function(_43,_44){ |
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| 288 | return this._getWidth(dojo.map(this._normalize(_43).split(""),function(chr){ |
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| 289 | return this.glyphs[chr]||{xAdvance:this.advance.missing.x}; |
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| 290 | },this))*(_44||1); |
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| 291 | },getLineHeight:function(_45){ |
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| 292 | return this.viewbox.height*(_45||1); |
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| 293 | },getCenterline:function(_46){ |
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| 294 | return (_46||1)*(this.viewbox.height/2); |
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| 295 | },getBaseline:function(_47){ |
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| 296 | return (_47||1)*(this.viewbox.height+this.descent); |
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| 297 | },draw:function(_48,_49,_4a,_4b,_4c){ |
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| 298 | if(!this.initialized()){ |
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| 299 | throw new Error("dojox.gfx.VectorFont.draw(): we have not been initialized yet."); |
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| 300 | } |
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| 301 | var g=_48.createGroup();
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| 302 | if(_49.x||_49.y){
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| 303 | _48.applyTransform({dx:_49.x||0,dy:_49.y||0});
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| 304 | } |
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| 305 | var _4d=dojo.map(this._normalize(_49.text).split(""),function(chr){ |
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| 306 | return this.glyphs[chr]||{path:null,xAdvance:this.advance.missing.x}; |
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| 307 | },this);
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| 308 | var _4e=_4a.size,_4f=_49.fitting,_50=_49.width,_51=_49.height,_52=_49.align,_53=_49.leading||this._defaultLeading; |
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| 309 | if(_4f){
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| 310 | if((_4f==dojox.gfx.vectorFontFitting.FLOW&&!_50)||(_4f==dojox.gfx.vectorFontFitting.FIT&&(!_50||!_51))){
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| 311 | _4f=dojox.gfx.vectorFontFitting.NONE; |
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| 312 | } |
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| 313 | } |
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| 314 | var _54,_55;
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| 315 | switch(_4f){
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| 316 | case dojox.gfx.vectorFontFitting.FIT:
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| 317 | var o=this._getBestFit(_4d,_50,_51,_53); |
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| 318 | _55=o.scale; |
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| 319 | _54=o.lines; |
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| 320 | break;
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| 321 | case dojox.gfx.vectorFontFitting.FLOW:
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| 322 | _55=this._getSizeFactor(_4e);
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| 323 | _54=this._getBestFlow(_4d,_50,_55);
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| 324 | break;
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| 325 | default:
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| 326 | _55=this._getSizeFactor(_4e);
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| 327 | _54=[_4d]; |
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| 328 | } |
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| 329 | _54=dojo.filter(_54,function(_56){
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| 330 | return _56.length>0; |
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| 331 | }); |
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| 332 | var cy=0,_57=this._getLongestLine(_54).width; |
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| 333 | for(var i=0,l=_54.length;i<l;i++){ |
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| 334 | var cx=0,_58=_54[i],_59=this._getWidth(_58),lg=g.createGroup(); |
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| 335 | for(var j=0;j<_58.length;j++){ |
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| 336 | var _5a=_58[j];
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| 337 | if(_5a.path!==null){ |
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| 338 | var p=lg.createPath(_5a.path).setFill(_4b);
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| 339 | if(_4c){
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| 340 | p.setStroke(_4c); |
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| 341 | } |
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| 342 | p.setTransform([dojox.gfx.matrix.flipY,dojox.gfx.matrix.translate(cx,-this.viewbox.height-this.descent)]); |
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| 343 | } |
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| 344 | cx+=_5a.xAdvance; |
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| 345 | if(j+1<_58.length&&_5a.kern&&_5a.kern[_58[j+1].code]){ |
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| 346 | cx+=_5a.kern[_58[j+1].code].x;
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| 347 | } |
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| 348 | } |
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| 349 | var dx=0; |
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| 350 | if(_52=="middle"){ |
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| 351 | dx=_57/2-_59/2; |
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| 352 | }else{
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| 353 | if(_52=="end"){ |
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| 354 | dx=_57-_59; |
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| 355 | } |
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| 356 | } |
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| 357 | lg.setTransform({dx:dx,dy:cy});
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| 358 | cy+=this.viewbox.height*_53;
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| 359 | } |
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| 360 | g.setTransform(dojox.gfx.matrix.scale(_55)); |
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| 361 | return g;
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| 362 | },onLoadBegin:function(url){ |
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| 363 | },onLoad:function(_5b){ |
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| 364 | }}); |
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| 365 | })(); |
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| 366 | } |