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 }