Source for javax.swing.plaf.metal.MetalLabelUI

   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: }