Source for javax.swing.plaf.basic.BasicToggleButtonUI

   1: /* BasicToggleButtonUI.java
   2:    Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.swing.plaf.basic;
  40: 
  41: import java.awt.Font;
  42: import java.awt.Graphics;
  43: import java.awt.Rectangle;
  44: 
  45: import javax.swing.AbstractButton;
  46: import javax.swing.JComponent;
  47: import javax.swing.JToggleButton;
  48: import javax.swing.SwingUtilities;
  49: import javax.swing.UIManager;
  50: import javax.swing.plaf.ComponentUI;
  51: 
  52: /**
  53:  * A UI delegate for the {@link JToggleButton} component.
  54:  */
  55: public class BasicToggleButtonUI extends BasicButtonUI
  56: {
  57:   
  58:   /**
  59:    * Returns a UI delegate for the specified component.
  60:    * 
  61:    * @param component  the component (should be an instance of 
  62:    *     {@link JToggleButton}).
  63:    *     
  64:    * @return An instance of <code>BasicToggleButtonUI</code>.
  65:    */
  66:   public static ComponentUI createUI(JComponent component)
  67:   {
  68:     return new BasicToggleButtonUI();
  69:   }    
  70: 
  71:   /**
  72:    * Returns the prefix for entries in the {@link UIManager} defaults table 
  73:    * (<code>"ToggleButton."</code> in this case).
  74:    *
  75:    * @return <code>"ToggleButton."</code>
  76:    */
  77:   protected String getPropertyPrefix()
  78:   {
  79:     return "ToggleButton.";
  80:   }
  81: 
  82:   /**
  83:    * Paint the component, which is an {@link AbstractButton}, according to 
  84:    * its current state.
  85:    *
  86:    * @param g The graphics context to paint with
  87:    * @param c The component to paint the state of
  88:    */
  89:   public void paint(Graphics g, JComponent c)
  90:   {      
  91:     AbstractButton b = (AbstractButton) c;
  92: 
  93:     Rectangle tr = new Rectangle();
  94:     Rectangle ir = new Rectangle();
  95:     Rectangle vr = new Rectangle();
  96: 
  97:     Font f = c.getFont();
  98: 
  99:     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: }