001 /* ======================================================================== 002 * JCommon : a free general purpose class library for the Java(tm) platform 003 * ======================================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jcommon/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ---------------------- 028 * BasicStrokeReadHandler 029 * ---------------------- 030 * (C) Copyright 2003, by Thomas Morgner and Contributors. 031 * 032 * Original Author: Thomas Morgner; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: BasicStrokeReadHandler.java,v 1.2 2005/10/18 13:33:32 mungady Exp $ 036 * 037 * Changes (from 25-Nov-2003) 038 * -------------------------- 039 * 25-Nov-2003 : Added standard header and Javadocs (DG); 040 * 041 */ 042 043 package org.jfree.xml.parser.coretypes; 044 045 import java.awt.BasicStroke; 046 import java.util.StringTokenizer; 047 048 import org.jfree.xml.parser.AbstractXmlReadHandler; 049 import org.xml.sax.Attributes; 050 import org.xml.sax.SAXException; 051 052 /** 053 * A SAX handler for reading a {@link BasicStroke} object from XML. 054 * <p> 055 * To do: this should have a multiplexer in front like the PaintReadHandler 056 */ 057 public class BasicStrokeReadHandler extends AbstractXmlReadHandler { 058 059 /** The stroke under construction. */ 060 private BasicStroke stroke; 061 062 /** 063 * Creates a new handler. 064 */ 065 public BasicStrokeReadHandler() { 066 super(); 067 } 068 069 /** 070 * Called at the start of parsing a {@link BasicStroke} element, this method reads the 071 * attributes and constructs the stroke. 072 * 073 * @param attrs the attributes. 074 * 075 * @throws SAXException to indicate a parsing error. 076 */ 077 protected void startParsing(final Attributes attrs) throws SAXException { 078 final int endCap = Integer.parseInt(attrs.getValue("endCap")); 079 final int lineJoin = Integer.parseInt(attrs.getValue("lineJoin")); 080 final float lineWidth = Float.parseFloat(attrs.getValue("lineWidth")); 081 final float miterLimit = Float.parseFloat(attrs.getValue("miterLimit")); 082 final String dashArrayAttrib = attrs.getValue("dashArray"); 083 if (dashArrayAttrib != null) { 084 final float[] dashArray = parseDashArray(dashArrayAttrib); 085 final float dashPhase = Float.parseFloat(attrs.getValue("dashPhase")); 086 this.stroke = new BasicStroke( 087 lineWidth, endCap, lineJoin, miterLimit, dashArray, dashPhase 088 ); 089 } 090 else { 091 this.stroke = new BasicStroke(lineWidth, endCap, lineJoin, miterLimit); 092 } 093 } 094 095 /** 096 * Parses the dash array. 097 * 098 * @param string the dash array string representation. 099 * 100 * @return a dash array. 101 */ 102 private float[] parseDashArray(final String string) { 103 final StringTokenizer tokenizer = new StringTokenizer(string, ","); 104 final float[] retVal = new float[tokenizer.countTokens()]; 105 for (int i = 0; i < retVal.length; i++) { 106 retVal[i] = Float.parseFloat(tokenizer.nextToken()); 107 } 108 return retVal; 109 } 110 111 /** 112 * Returns the stroke under construction. 113 * 114 * @return the stroke. 115 */ 116 public Object getObject() { 117 return this.stroke; 118 } 119 120 }