HierarchicalColumnHighlighter


1   /*
2    * $Id: HierarchicalColumnHighlighter.java,v 1.2 2004/10/14 01:28:19 davidson1 Exp $
3    *
4    * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
5    * Santa Clara, California 95054, U.S.A. All rights reserved.
6    */
7   
8   package org.jdesktop.swing.decorator;
9   
10  import java.awt.Color  ;
11  import java.awt.Component  ;
12  
13  /**
14   * HierarchicalColumnHighlighter
15   *
16   * @author Ramesh Gupta
17   */
18  public class HierarchicalColumnHighlighter extends Highlighter {
19      public HierarchicalColumnHighlighter() {
20      }
21  
22      public HierarchicalColumnHighlighter(Color   background, Color   foreground) {
23          super(background, foreground);
24      }
25  
26      protected Color   computeBackground(Component   component, ComponentAdapter adapter) {
27          if (adapter.isHierarchical()) {
28              Color   background = getBackground();
29              Color   seed = background == null ? component.getBackground() : background;
30              seed = computeBackgroundSeed(seed);
31              return adapter.isSelected() ? computeSelectedBackground(seed) : seed;
32          }
33          return null;    // don't change the background
34      }
35  
36      public Color   getForeground(Component   component, ComponentAdapter adapter) {
37          if (adapter.isHierarchical()) {
38              if (getForeground() != null) {
39                  return super.computeForeground(component, adapter);
40              }
41          }
42          return null;    // don't change the foreground
43      }
44  
45      protected Color   computeBackgroundSeed(Color   seed) {
46          return new Color  (Math.max((int)(seed.getRed()  * 0.95), 0),
47                           Math.max((int)(seed.getGreen()* 0.95), 0),
48                           Math.max((int)(seed.getBlue() * 0.95), 0));
49      }
50  }
51
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