old-autovect-branch/libjava/classpath/javax/swing/plaf/metal/MetalLabelUI.java

   1 /* MetalLabelUI.java
   2    Copyright (C) 2005 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.metal;
  40
  41 import java.awt.Color;
  42 import java.awt.Graphics;
  43
  44 import javax.swing.JComponent;
  45 import javax.swing.JLabel;
  46 import javax.swing.UIManager;
  47 import javax.swing.plaf.ComponentUI;
  48 import javax.swing.plaf.basic.BasicGraphicsUtils;
  49 import javax.swing.plaf.basic.BasicLabelUI;
  50
  51 /**
  52  * A UI delegate for the {@link JLabel} component.
  53  */
  54 public class MetalLabelUI
  55   extends BasicLabelUI
  56 {
  57
  58   /** The shared instance of the UI delegate. */
  59   protected static MetalLabelUI metalLabelUI;
  60
  61   /**
  62    * Constructs a new instance of <code>MetalLabelUI</code>.
  63    */
  64   public MetalLabelUI()
  65   {
  66     super();
  67   }
  68
  69   /**
  70    * Returns a shared instance of <code>MetalLabelUI</code>.
  71    *
  72    * @param component the component for which we return an UI instance
  73    *
  74    * @return A shared instance of <code>MetalLabelUI</code>.
  75    */
  76   public static ComponentUI createUI(JComponent component)
  77   {
  78     if (metalLabelUI == null)
  79       metalLabelUI = new MetalLabelUI();
  80     return metalLabelUI;
  81   }
  82
  83   /**
  84    * Draws the text for a disabled label, using the color defined in the
  85    * {@link UIManager} defaults with the key
  86    * <code>Label.disabledForeground</code>.
  87    *
  88    * @param l  the label.
  89    * @param g  the graphics device.
  90    * @param s  the label text.
  91    * @param textX  the x-coordinate for the label.
  92    * @param textY  the y-coordinate for the label.
  93    */
  94   protected void paintDisabledText(JLabel l, Graphics g, String s, int textX,
  95                                  int textY)
  96   {
  97     Color savedColor = g.getColor();
  98     g.setColor(UIManager.getColor("Label.disabledForeground"));
  99     int mnemIndex = l.getDisplayedMnemonicIndex();
 100     if (mnemIndex != -1)
 101       BasicGraphicsUtils.drawStringUnderlineCharAt(g, s, mnemIndex, textX,
 102           textY);
 103     else
 104       g.drawString(s, textX, textY);
 105
 106     g.setColor(savedColor);
 107   }
 108 }