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 * BasicStrokeWriteHandler.java
029 * ----------------------------
030 * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
031 *
032 * Original Author: Thomas Morgner;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: BasicStrokeWriteHandler.java,v 1.3 2005/10/18 13:35:21 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 12-Nov-2003 : Initial version (TM);
040 * 25-Nov-2003 : Updated header (DG);
041 *
042 */
043
044 package org.jfree.xml.writer.coretypes;
045
046 import java.awt.BasicStroke;
047 import java.io.IOException;
048
049 import org.jfree.xml.writer.AbstractXmlWriteHandler;
050 import org.jfree.xml.writer.AttributeList;
051 import org.jfree.xml.writer.XMLWriter;
052 import org.jfree.xml.writer.XMLWriterException;
053
054 /**
055 * A handler that can write the XML description for a {@link BasicStroke} object.
056 */
057 public class BasicStrokeWriteHandler extends AbstractXmlWriteHandler {
058
059 /**
060 * Creates a new handler.
061 */
062 public BasicStrokeWriteHandler() {
063 super();
064 }
065
066 /**
067 * Performs the writing of a single object.
068 *
069 * @param tagName the tag name.
070 * @param object the object ({@link BasicStroke} expected).
071 * @param writer the writer.
072 * @param mPlexAttribute ??
073 * @param mPlexValue ??
074 *
075 * @throws IOException if there is an I/O problem.
076 * @throws XMLWriterException if there is a problem with the writer.
077 */
078 public void write(final String tagName, final Object object, final XMLWriter writer,
079 final String mPlexAttribute, final String mPlexValue)
080 throws IOException, XMLWriterException {
081 final BasicStroke stroke = (BasicStroke) object;
082 final float[] dashArray = stroke.getDashArray();
083 final float dashPhase = stroke.getDashPhase();
084 final int endCap = stroke.getEndCap();
085 final int lineJoin = stroke.getLineJoin();
086 final float lineWidth = stroke.getLineWidth();
087 final float miterLimit = stroke.getMiterLimit();
088 final AttributeList attribs = new AttributeList();
089 if (mPlexAttribute != null) {
090 attribs.setAttribute(mPlexAttribute, mPlexValue);
091 }
092 attribs.setAttribute("type", "basic");
093 attribs.setAttribute("endCap", String.valueOf(endCap));
094 attribs.setAttribute("lineJoin", String.valueOf(lineJoin));
095 attribs.setAttribute("lineWidth", String.valueOf(lineWidth));
096 attribs.setAttribute("miterLimit", String.valueOf(miterLimit));
097 if (dashArray != null) {
098 attribs.setAttribute("dashArray", toString(dashArray));
099 attribs.setAttribute("dashPhase", String.valueOf(dashPhase));
100 }
101 writer.writeTag(tagName, attribs, true);
102 }
103
104 /**
105 * A utility method that converts a dash array (from a {@link BasicStroke} object) to
106 * a {@link String}.
107 *
108 * @param dashArray the dash array.
109 *
110 * @return a {@link String} representing the dash array.
111 */
112 private String toString(final float[] dashArray) {
113 final StringBuffer buffer = new StringBuffer();
114 for (int i = 0; i < dashArray.length; i++) {
115 final float f = dashArray[i];
116 if (i != 0) {
117 buffer.append(',');
118 }
119 buffer.append(f);
120 }
121 return buffer.toString();
122 }
123
124 }