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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: * BasicStrokeObjectDescription.java 29: * --------------------------------- 30: * (C)opyright 2003, 2004, by Thomas Morgner and Contributors. 31: * 32: * Original Author: Thomas Morgner; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: BasicStrokeObjectDescription.java,v 1.4 2006/01/27 18:53:15 taqua Exp $ 36: * 37: * Changes (from 19-Feb-2003) 38: * ------------------------- 39: * 19-Feb-2003 : Added standard header and Javadocs (DG); 40: * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon 41: * 42: */ 43: 44: package org.jfree.xml.factory.objects; 45: 46: import java.awt.BasicStroke; 47: 48: /** 49: * An object-description for a <code>BasicStroke</code> object. 50: * 51: * @author Thomas Morgner 52: */ 53: public class BasicStrokeObjectDescription extends AbstractObjectDescription { 54: 55: /** 56: * Creates a new object description. 57: */ 58: public BasicStrokeObjectDescription() { 59: super(BasicStroke.class); 60: setParameterDefinition("value", String.class); 61: setParameterDefinition("width", Float.class); 62: setParameterDefinition("dashes", Float[].class); 63: } 64: 65: /** 66: * Returns a parameter as a float. 67: * 68: * @param param the parameter name. 69: * 70: * @return The float value. 71: */ 72: private float getFloatParameter(final String param) { 73: final String p = (String) getParameter(param); 74: if (p == null) { 75: return 0; 76: } 77: try { 78: return Float.parseFloat(p); 79: } 80: catch (Exception e) { 81: return 0; 82: } 83: } 84: 85: /** 86: * Creates a new <code>BasicStroke</code> object based on this description. 87: * 88: * @return The <code>BasicStroke</code> object. 89: */ 90: public Object createObject() { 91: 92: final float width = getFloatParameter("value"); 93: if (width > 0) { 94: return new BasicStroke(width); 95: } 96: 97: Float realWidth = (Float) getParameter("width"); 98: Float[] dashes = (Float[]) getParameter("dashes"); 99: if (realWidth == null || dashes == null) { 100: return null; 101: } 102: float[] dashesPrimitive = new float[dashes.length]; 103: for (int i = 0; i < dashes.length; i++) { 104: Float dash = dashes[i]; 105: dashesPrimitive[i] = dash.floatValue(); 106: } 107: return new BasicStroke(realWidth.floatValue(), 108: BasicStroke.CAP_SQUARE, BasicStroke.JOIN_MITER, 109: 10.0f, dashesPrimitive, 0.0f); 110: } 111: 112: /** 113: * Sets the parameters for this description to match the supplied object. 114: * 115: * @param o the object (instance of <code>BasicStroke</code> required). 116: * 117: * @throws ObjectFactoryException if the supplied object is not an instance of 118: * <code>BasicStroke</code>. 119: */ 120: public void setParameterFromObject(final Object o) throws ObjectFactoryException { 121: if (!(o instanceof BasicStroke)) { 122: throw new ObjectFactoryException("Expected object of type BasicStroke"); 123: } 124: final BasicStroke bs = (BasicStroke) o; 125: setParameter("value", String.valueOf(bs.getLineWidth())); 126: } 127: }