KickJava   Java API By Example, From Geeks To Geeks.

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


1 /*
2  * TreeCellEditorPainter.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 TreeCellEditorPainter 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 TreeCellEditorPainter 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_ENABLED_FOCUSED = 3;
25     static final int BACKGROUND_SELECTED = 4;
26
27
28     private int state; //refers to one of the static final ints above
29 private PaintContext ctx;
30
31     //the following 4 variables are reused during the painting code of the layers
32 private Path2D path = new Path2D.Float();
33     private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
34     private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
35     private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);
36
37     //All Colors used for painting are stored here. Ideally, only those colors being used
38 //by a particular instance of TreeCellEditorPainter would be created. For the moment at least,
39 //however, all are created for each instance.
40 private Color color1 = decodeColor("nimbusBlueGrey", 0.0f, -0.017358616f, -0.11372548f, 0);
41     private Color color2 = decodeColor("nimbusFocus", 0.0f, 0.0f, 0.0f, 0);
42
43
44     //Array of current component colors, updated in each paint call
45 private Object JavaDoc[] componentColors;
46
47     public TreeCellEditorPainter(PaintContext ctx, int state) {
48         super();
49         this.state = state;
50         this.ctx = ctx;
51     }
52
53     @Override JavaDoc
54     protected void doPaint(Graphics2D g, JComponent c, int width, int height, Object JavaDoc[] extendedCacheKeys) {
55         //populate componentColors array with colors calculated in getExtendedCacheKeys call
56 componentColors = extendedCacheKeys;
57         //generate this entire method. Each state/bg/fg/border combo that has
58 //been painted gets its own KEY and paint method.
59 switch(state) {
60             case BACKGROUND_ENABLED: paintBackgroundEnabled(g); break;
61             case BACKGROUND_ENABLED_FOCUSED: paintBackgroundEnabledAndFocused(g); break;
62
63         }
64     }
65         
66
67
68     @Override JavaDoc
69     protected final PaintContext getPaintContext() {
70         return ctx;
71     }
72
73     private void paintBackgroundEnabled(Graphics2D g) {
74         path = decodePath1();
75         g.setPaint(color1);
76         g.fill(path);
77
78     }
79
80     private void paintBackgroundEnabledAndFocused(Graphics2D g) {
81         path = decodePath2();
82         g.setPaint(color2);
83         g.fill(path);
84
85     }
86
87
88
89     private Path2D decodePath1() {
90         path.reset();
91         path.moveTo(decodeX(0.0f), decodeY(0.0f));
92         path.lineTo(decodeX(0.0f), decodeY(3.0f));
93         path.lineTo(decodeX(3.0f), decodeY(3.0f));
94         path.lineTo(decodeX(3.0f), decodeY(0.0f));
95         path.lineTo(decodeX(0.2f), decodeY(0.0f));
96         path.lineTo(decodeX(0.2f), decodeY(0.2f));
97         path.lineTo(decodeX(2.8f), decodeY(0.2f));
98         path.lineTo(decodeX(2.8f), decodeY(2.8f));
99         path.lineTo(decodeX(0.2f), decodeY(2.8f));
100         path.lineTo(decodeX(0.2f), decodeY(0.0f));
101         path.lineTo(decodeX(0.0f), decodeY(0.0f));
102         path.closePath();
103         return path;
104     }
105
106     private Path2D decodePath2() {
107         path.reset();
108         path.moveTo(decodeX(0.0f), decodeY(0.0f));
109         path.lineTo(decodeX(0.0f), decodeY(3.0f));
110         path.lineTo(decodeX(3.0f), decodeY(3.0f));
111         path.lineTo(decodeX(3.0f), decodeY(0.0f));
112         path.lineTo(decodeX(0.24000001f), decodeY(0.0f));
113         path.lineTo(decodeX(0.24000001f), decodeY(0.24000001f));
114         path.lineTo(decodeX(2.7600007f), decodeY(0.24000001f));
115         path.lineTo(decodeX(2.7600007f), decodeY(2.7599998f));
116         path.lineTo(decodeX(0.24000001f), decodeY(2.7599998f));
117         path.lineTo(decodeX(0.24000001f), decodeY(0.0f));
118         path.lineTo(decodeX(0.0f), decodeY(0.0f));
119         path.closePath();
120         return path;
121     }
122
123
124
125
126 }
127
Popular Tags