Source for org.jfree.xml.writer.coretypes.BasicStrokeWriteHandler

   1: /* ========================================================================
   2:  * JCommon : a free general purpose class library for the Java(tm) platform
   3:  * ========================================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  * 
   7:  * Project Info:  http://www.jfree.org/jcommon/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  * 
  27:  * ----------------------------
  28:  * BasicStrokeWriteHandler.java
  29:  * ----------------------------
  30:  * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
  31:  *
  32:  * Original Author:  Thomas Morgner;
  33:  * Contributor(s):   David Gilbert (for Object Refinery Limited);
  34:  *
  35:  * $Id: BasicStrokeWriteHandler.java,v 1.3 2005/10/18 13:35:21 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 12-Nov-2003 : Initial version (TM);
  40:  * 25-Nov-2003 : Updated header (DG);
  41:  * 
  42:  */
  43: 
  44: package org.jfree.xml.writer.coretypes;
  45: 
  46: import java.awt.BasicStroke;
  47: import java.io.IOException;
  48: 
  49: import org.jfree.xml.writer.AbstractXmlWriteHandler;
  50: import org.jfree.xml.writer.AttributeList;
  51: import org.jfree.xml.writer.XMLWriter;
  52: import org.jfree.xml.writer.XMLWriterException;
  53: 
  54: /**
  55:  * A handler that can write the XML description for a {@link BasicStroke} object.
  56:  */
  57: public class BasicStrokeWriteHandler extends AbstractXmlWriteHandler  {
  58: 
  59:     /**
  60:      * Creates a new handler.
  61:      */
  62:     public BasicStrokeWriteHandler() {
  63:         super();
  64:     }
  65: 
  66:     /**
  67:      * Performs the writing of a single object.
  68:      *
  69:      * @param tagName  the tag name.
  70:      * @param object  the object ({@link BasicStroke} expected).
  71:      * @param writer  the writer.
  72:      * @param mPlexAttribute  ??
  73:      * @param mPlexValue  ??
  74:      * 
  75:      * @throws IOException if there is an I/O problem.
  76:      * @throws XMLWriterException if there is a problem with the writer.
  77:      */
  78:     public void write(final String tagName, final Object object, final XMLWriter writer,
  79:                       final String mPlexAttribute, final String mPlexValue)
  80:         throws IOException, XMLWriterException {
  81:         final BasicStroke stroke = (BasicStroke) object;
  82:         final float[] dashArray = stroke.getDashArray();
  83:         final float dashPhase = stroke.getDashPhase();
  84:         final int endCap = stroke.getEndCap();
  85:         final int lineJoin = stroke.getLineJoin();
  86:         final float lineWidth = stroke.getLineWidth();
  87:         final float miterLimit = stroke.getMiterLimit();
  88:         final AttributeList attribs = new AttributeList();
  89:         if (mPlexAttribute != null) {
  90:             attribs.setAttribute(mPlexAttribute, mPlexValue);
  91:         }
  92:         attribs.setAttribute("type", "basic");
  93:         attribs.setAttribute("endCap", String.valueOf(endCap));
  94:         attribs.setAttribute("lineJoin", String.valueOf(lineJoin));
  95:         attribs.setAttribute("lineWidth", String.valueOf(lineWidth));
  96:         attribs.setAttribute("miterLimit", String.valueOf(miterLimit));
  97:         if (dashArray != null) {
  98:             attribs.setAttribute("dashArray", toString(dashArray));
  99:             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: }