001/* IconUIResource.java -- 002 Copyright (C) 2002, 2003, 2004, 2006, Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.swing.plaf; 040 041import java.awt.Component; 042import java.awt.Graphics; 043import java.io.Serializable; 044 045import javax.swing.Icon; 046 047/** 048 * An icon that is marked as <code>UIResource</code>, which 049 * indicates that it has been installed by a pluggable 050 * LookAndFeel. Such icons are replaced when the LookAndFeel 051 * changes. 052 * 053 * @author Andrew Selkirk (aselkirk@sympatico.ca) 054 * @author Sascha Brawer (brawer@dandelis.ch) 055 */ 056public class IconUIResource implements Icon, UIResource, Serializable 057{ 058 /** 059 * Verified using the <code>serialver</code> tool of Sun JDK 1.4.1_01 060 * on GNU/Linux 2.4.18. 061 */ 062 static final long serialVersionUID = 3327049506004830542L; 063 064 065 /** 066 * The icon that is wrapped by this <code>IconUIResource</code> (never 067 * <code>null</code>). 068 */ 069 private Icon delegate; 070 071 072 /** 073 * Constructs a <code>IconUIResource</code> that wraps another 074 * icon. All messages are forwarded to the delegate icon. 075 * 076 * @param delegate the icon that is wrapped by this 077 * <code>IconUIResource</code> (<code>null</code> not permitted). 078 */ 079 public IconUIResource(Icon delegate) 080 { 081 if (delegate == null) 082 throw new IllegalArgumentException("Null 'delegate' argument."); 083 this.delegate = delegate; 084 } 085 086 087 /** 088 * Paints the icon by asking the delegate icon to paint itself. 089 * 090 * @param c the Component whose icon is being painted. Some icons 091 * use this argument to retrieve properties like the 092 * background color. 093 * 094 * @param g the graphics into which the icon will be painted. 095 * 096 * @param x the horizontal position of the icon. 097 * 098 * @param y the vertical position of the icon. 099 */ 100 public void paintIcon(Component c, Graphics g, int x, int y) 101 { 102 delegate.paintIcon(c, g, x, y); 103 } 104 105 106 /** 107 * Returns the width of the icon in pixels. The implementation 108 * determines and returns the width of the delegate icon. 109 */ 110 public int getIconWidth() 111 { 112 return delegate.getIconWidth(); 113 } 114 115 116 /** 117 * Returns the height of the icon in pixels. The implementation 118 * determines and returns the height of the delegate icon. 119 */ 120 public int getIconHeight() 121 { 122 return delegate.getIconHeight(); 123 } 124}