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


1 /*
2  * SeparatorPainter.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 SeparatorPainter 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 SeparatorPainter to determine which region/state is being painted
21 //by that instance.
22 static final int BACKGROUND_ENABLED = 1;
23
24
25     private int state; //refers to one of the static final ints above
26 private PaintContext ctx;
27
28     //the following 4 variables are reused during the painting code of the layers
29 private Path2D path = new Path2D.Float();
30     private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
31     private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
32     private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);
33
34     //All Colors used for painting are stored here. Ideally, only those colors being used
35 //by a particular instance of SeparatorPainter would be created. For the moment at least,
36 //however, all are created for each instance.
37 private Color color1 = decodeColor("nimbusBlueGrey", -0.008547008f, -0.03830409f, -0.039215684f, 0);
38
39
40     //Array of current component colors, updated in each paint call
41 private Object JavaDoc[] componentColors;
42
43     public SeparatorPainter(PaintContext ctx, int state) {
44         super();
45         this.state = state;
46         this.ctx = ctx;
47     }
48
49     @Override JavaDoc
50     protected void doPaint(Graphics2D g, JComponent c, int width, int height, Object JavaDoc[] extendedCacheKeys) {
51         //populate componentColors array with colors calculated in getExtendedCacheKeys call
52 componentColors = extendedCacheKeys;
53         //generate this entire method. Each state/bg/fg/border combo that has
54 //been painted gets its own KEY and paint method.
55 switch(state) {
56             case BACKGROUND_ENABLED: paintBackgroundEnabled(g); break;
57
58         }
59     }
60         
61
62
63     @Override JavaDoc
64     protected final PaintContext getPaintContext() {
65         return ctx;
66     }
67
68     private void paintBackgroundEnabled(Graphics2D g) {
69         rect = decodeRect1();
70         g.setPaint(color1);
71         g.fill(rect);
72
73     }
74
75
76
77     private Rectangle2D decodeRect1() {
78             rect.setRect(decodeX(0.0f), //x
79 decodeY(1.3333334f), //y
80 decodeX(3.0f) - decodeX(0.0f), //width
81 decodeY(1.6666667f) - decodeY(1.3333334f)); //height
82 return rect;
83     }
84
85
86
87
88 }
89
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