KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > java > swing > plaf > nimbus > PanelPainter


1 /*
2  * PanelPainter.java %E%
3  *
4  * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
5  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6  */
7 package com.sun.java.swing.plaf.nimbus;
8
9 import java.awt.*;
10 import java.awt.geom.*;
11 import java.awt.image.*;
12 import javax.swing.*;
13 import com.sun.java.swing.Painter;
14
15 /**
16  */
17 public final class PanelPainter extends AbstractRegionPainter {
18     //package private integers representing the available states that
19 //this painter will paint. These are used when creating a new instance
20 //of PanelPainter to determine which region/state is being painted
21 //by that instance.
22 static final int BACKGROUND_DISABLED = 1;
23     static final int BACKGROUND_ENABLED = 2;
24     static final int BACKGROUND_FOCUSED = 3;
25     static final int BACKGROUND_MOUSEOVER = 4;
26     static final int BACKGROUND_PRESSED = 5;
27
28
29     private int state; //refers to one of the static final ints above
30 private PaintContext ctx;
31
32     //the following 4 variables are reused during the painting code of the layers
33 private Path2D path = new Path2D.Float();
34     private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
35     private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
36     private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);
37
38     //All Colors used for painting are stored here. Ideally, only those colors being used
39 //by a particular instance of PanelPainter would be created. For the moment at least,
40 //however, all are created for each instance.
41
42
43     //Array of current component colors, updated in each paint call
44 private Object JavaDoc[] componentColors;
45
46     public PanelPainter(PaintContext ctx, int state) {
47         super();
48         this.state = state;
49         this.ctx = ctx;
50     }
51
52     @Override JavaDoc
53     protected void doPaint(Graphics2D g, JComponent c, int width, int height, Object JavaDoc[] extendedCacheKeys) {
54         //populate componentColors array with colors calculated in getExtendedCacheKeys call
55 componentColors = extendedCacheKeys;
56         //generate this entire method. Each state/bg/fg/border combo that has
57 //been painted gets its own KEY and paint method.
58 switch(state) {
59
60         }
61     }
62         
63
64
65     @Override JavaDoc
66     protected final PaintContext getPaintContext() {
67         return ctx;
68     }
69
70
71
72
73
74
75 }
76
Popular Tags