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


1 /*
2  * ArrowButtonPainter.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 ArrowButtonPainter 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 ArrowButtonPainter to determine which region/state is being painted
21 //by that instance.
22 static final int BACKGROUND_ENABLED = 1;
23     static final int FOREGROUND_DISABLED = 2;
24     static final int FOREGROUND_ENABLED = 3;
25
26
27     private int state; //refers to one of the static final ints above
28 private PaintContext ctx;
29
30     //the following 4 variables are reused during the painting code of the layers
31 private Path2D path = new Path2D.Float();
32     private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
33     private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
34     private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);
35
36     //All Colors used for painting are stored here. Ideally, only those colors being used
37 //by a particular instance of ArrowButtonPainter would be created. For the moment at least,
38 //however, all are created for each instance.
39 private Color color1 = decodeColor("nimbusBase", 0.027408898f, -0.57391655f, 0.1490196f, 0);
40     private Color color2 = decodeColor("nimbusBase", -0.57865167f, -0.6357143f, -0.37254906f, 0);
41
42
43     //Array of current component colors, updated in each paint call
44 private Object JavaDoc[] componentColors;
45
46     public ArrowButtonPainter(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             case FOREGROUND_DISABLED: paintForegroundDisabled(g); break;
60             case FOREGROUND_ENABLED: paintForegroundEnabled(g); break;
61
62         }
63     }
64         
65
66
67     @Override JavaDoc
68     protected final PaintContext getPaintContext() {
69         return ctx;
70     }
71
72     private void paintForegroundDisabled(Graphics2D g) {
73         path = decodePath1();
74         g.setPaint(color1);
75         g.fill(path);
76
77     }
78
79     private void paintForegroundEnabled(Graphics2D g) {
80         path = decodePath1();
81         g.setPaint(color2);
82         g.fill(path);
83
84     }
85
86
87
88     private Path2D decodePath1() {
89         path.reset();
90         path.moveTo(decodeX(1.8f), decodeY(1.2f));
91         path.lineTo(decodeX(1.2f), decodeY(1.5f));
92         path.lineTo(decodeX(1.8f), decodeY(1.8f));
93         path.lineTo(decodeX(1.8f), decodeY(1.2f));
94         path.closePath();
95         return path;
96     }
97
98
99
100
101 }
102
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