001 /* BasicToggleButtonUI.java
002 Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package javax.swing.plaf.basic;
040
041 import java.awt.Font;
042 import java.awt.Graphics;
043 import java.awt.Rectangle;
044
045 import javax.swing.AbstractButton;
046 import javax.swing.JComponent;
047 import javax.swing.JToggleButton;
048 import javax.swing.SwingUtilities;
049 import javax.swing.UIManager;
050 import javax.swing.plaf.ComponentUI;
051
052 /**
053 * A UI delegate for the {@link JToggleButton} component.
054 */
055 public class BasicToggleButtonUI extends BasicButtonUI
056 {
057
058 /**
059 * Returns a UI delegate for the specified component.
060 *
061 * @param component the component (should be an instance of
062 * {@link JToggleButton}).
063 *
064 * @return An instance of <code>BasicToggleButtonUI</code>.
065 */
066 public static ComponentUI createUI(JComponent component)
067 {
068 return new BasicToggleButtonUI();
069 }
070
071 /**
072 * Returns the prefix for entries in the {@link UIManager} defaults table
073 * (<code>"ToggleButton."</code> in this case).
074 *
075 * @return <code>"ToggleButton."</code>
076 */
077 protected String getPropertyPrefix()
078 {
079 return "ToggleButton.";
080 }
081
082 /**
083 * Paint the component, which is an {@link AbstractButton}, according to
084 * its current state.
085 *
086 * @param g The graphics context to paint with
087 * @param c The component to paint the state of
088 */
089 public void paint(Graphics g, JComponent c)
090 {
091 AbstractButton b = (AbstractButton) c;
092
093 Rectangle tr = new Rectangle();
094 Rectangle ir = new Rectangle();
095 Rectangle vr = new Rectangle();
096
097 Font f = c.getFont();
098
099 g.setFont(f);
100
101 if (b.isBorderPainted())
102 SwingUtilities.calculateInnerArea(b, vr);
103 else
104 vr = SwingUtilities.getLocalBounds(b);
105 String text = SwingUtilities.layoutCompoundLabel(c, g.getFontMetrics(f),
106 b.getText(), currentIcon(b), b.getVerticalAlignment(),
107 b.getHorizontalAlignment(), b.getVerticalTextPosition(),
108 b.getHorizontalTextPosition(), vr, ir, tr, b.getIconTextGap()
109 + defaultTextShiftOffset);
110
111 if ((b.getModel().isArmed() && b.getModel().isPressed())
112 || b.isSelected())
113 paintButtonPressed(g, b);
114
115 paintIcon(g, b, ir);
116 if (text != null)
117 paintText(g, b, tr, text);
118 if (b.isFocusOwner() && b.isFocusPainted())
119 paintFocus(g, b, vr, tr, ir);
120 }
121
122 /**
123 * Paints the icon for the toggle button. This delegates to
124 * {@link BasicButtonUI#paintIcon(Graphics, JComponent, Rectangle)}.
125 *
126 * @param g the graphics context
127 * @param b the button to paint the icon for
128 * @param iconRect the area allocated for the icon
129 */
130 protected void paintIcon(Graphics g, AbstractButton b, Rectangle iconRect)
131 {
132 super.paintIcon(g, b, iconRect);
133 }
134 }