Frames | No Frames |
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: * Point2DObjectDescription.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: Point2DObjectDescription.java,v 1.3 2005/11/14 11:03:35 mungady 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.geom.Point2D; 47: 48: /** 49: * An object-description for a <code>Point2D</code> object. 50: * 51: * @author Thomas Morgner 52: */ 53: public class Point2DObjectDescription extends AbstractObjectDescription { 54: 55: /** 56: * Creates a new object description. 57: */ 58: public Point2DObjectDescription() { 59: super(Point2D.class); 60: setParameterDefinition("x", Float.class); 61: setParameterDefinition("y", Float.class); 62: } 63: 64: /** 65: * Creates an object based on this description. 66: * 67: * @return The object. 68: */ 69: public Object createObject() { 70: final Point2D point = new Point2D.Float(); 71: 72: final float x = getFloatParameter("x"); 73: final float y = getFloatParameter("y"); 74: point.setLocation(x, y); 75: return point; 76: } 77: 78: /** 79: * Returns a parameter value as a float. 80: * 81: * @param param the parameter name. 82: * 83: * @return The float value. 84: */ 85: private float getFloatParameter(final String param) { 86: final Float p = (Float) getParameter(param); 87: if (p == null) { 88: return 0; 89: } 90: return p.floatValue(); 91: } 92: 93: /** 94: * Sets the parameters of this description object to match the supplied object. 95: * 96: * @param o the object (should be an instance of <code>Point2D</code>). 97: * 98: * @throws ObjectFactoryException if the object is not an instance of <code>Point2D</code>. 99: */ 100: public void setParameterFromObject(final Object o) throws ObjectFactoryException { 101: if (!(o instanceof Point2D)) { 102: throw new ObjectFactoryException("The given object is no java.awt.geom.Point2D."); 103: } 104: 105: final Point2D point = (Point2D) o; 106: final float x = (float) point.getX(); 107: final float y = (float) point.getY(); 108: 109: setParameter("x", new Float(x)); 110: setParameter("y", new Float(y)); 111: } 112: }