/*****
|
*
|
* The contents of this file were written by Kevin Lindsey
|
* copyright 2002-2003 Kevin Lindsey
|
*
|
* This file was compacted by jscompact
|
* A Perl utility written by Kevin Lindsey (kevin@kevlindev.com)
|
*
|
*****/
|
|
Svg.VERSION=1.0;
|
Svg.NAMESPACE="http://www.w3.org/2000/svg";
|
function Svg(){}
|
PathParser.PARAMCOUNT={A:7,C:6,H:1,L:2,M:2,Q:4,S:4,T:2,V:1,Z:0};
|
PathParser.METHODNAME={A:"arcAbs",a:"arcRel",C:"curvetoCubicAbs",c:"curvetoCubicRel",H:"linetoHorizontalAbs",h:"linetoHorizontalRel",L:"linetoAbs",l:"linetoRel",M:"movetoAbs",m:"movetoRel",Q:"curvetoQuadraticAbs",q:"curvetoQuadraticRel",S:"curvetoCubicSmoothAbs",s:"curvetoCubicSmoothRel",T:"curvetoQuadraticSmoothAbs",t:"curvetoQuadraticSmoothRel",V:"linetoVerticalAbs",v:"linetoVerticalRel",Z:"closePath",z:"closePath"}
|
function PathParser(){this._lexer=new PathLexer();this._handler=null;}
|
PathParser.prototype.parsePath=function(path){if(path==null||path.namespaceURI!=Svg.NAMESPACE||path.localName!="path")throw new Error("PathParser.parsePath: The first parameter must be an SVG path element");this.parseData(path.getAttributeNS(null,"d"));};
|
PathParser.prototype.parseData=function(pathData){if(typeof(pathData)!="string")throw new Error("PathParser.parseData: The first parameter must be a string");if(this._handler!=null&&this._handler.beginParse!=null)this._handler.beginParse();var lexer=this._lexer;lexer.setPathData(pathData);var mode="BOP";var token=lexer.getNextToken();while(!token.typeis(PathToken.EOD)){var param_count;var params=new Array();switch(token.type){case PathToken.COMMAND:if(mode=="BOP"&&token.text!="M"&&token.text!="m")throw new Error("PathParser.parseData: a path must begin with a moveto command");mode=token.text;param_count=PathParser.PARAMCOUNT[token.text.toUpperCase()];token=lexer.getNextToken();break;case PathToken.NUMBER:break;default:throw new Error("PathParser.parseData: unrecognized token type: "+token.type);}for(var i=0;i<param_count;i++){switch(token.type){case PathToken.COMMAND:throw new Error("PathParser.parseData: parameter must be a number: "+token.text);case PathToken.NUMBER:params[i]=token.text-0;break;default:throw new Errot("PathParser.parseData: unrecognized token type: "+token.type);}token=lexer.getNextToken();}if(this._handler!=null){var handler=this._handler;var method=PathParser.METHODNAME[mode];if(handler[method]!=null)handler[method].apply(handler,params);}if(mode=="M")mode="L";if(mode=="m")mode="l";}};
|
PathParser.prototype.setHandler=function(handler){this._handler=handler;};
|
PathLexer.VERSION=1.0;
|
function PathLexer(pathData){if(pathData==null)pathData="";this.setPathData(pathData);}
|
PathLexer.prototype.setPathData=function(pathData){if(typeof(pathData)!="string")throw new Error("PathLexer.setPathData: The first parameter must be a string");this._pathData=pathData;};
|
PathLexer.prototype.getNextToken=function(){var result=null;var d=this._pathData;while(result==null){if(d==null||d==""){result=new PathToken(PathToken.EOD,"");}else if(d.match(/^([ \t\r\n,]+)/)){d=d.substr(RegExp.$1.length);}else if(d.match(/^([AaCcHhLlMmQqSsTtVvZz])/)){result=new PathToken(PathToken.COMMAND,RegExp.$1);d=d.substr(RegExp.$1.length);}else if(d.match(/^(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)/)){result=new PathToken(PathToken.NUMBER,parseFloat(RegExp.$1));d=d.substr(RegExp.$1.length);}else{throw new Error("PathLexer.getNextToken: unrecognized path data "+d);}}this._pathData=d;return result;};
|
PathToken.UNDEFINED=0;
|
PathToken.COMMAND=1;
|
PathToken.NUMBER=2;
|
PathToken.EOD=3;
|
function PathToken(type,text){if(arguments.length>0){this.init(type,text);}}
|
PathToken.prototype.init=function(type,text){this.type=type;this.text=text;};
|
PathToken.prototype.typeis=function(type){return this.type==type;}
|
