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


1 /*
2  * ScrollPanePainter.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 ScrollPanePainter 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 ScrollPanePainter to determine which region/state is being painted
21 //by that instance.
22 static final int BACKGROUND_ENABLED = 1;
23     static final int BORDER_ENABLED_FOCUSED = 2;
24     static final int BORDER_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 ScrollPanePainter would be created. For the moment at least,
38 //however, all are created for each instance.
39 private Color color1 = decodeColor("nimbusBorder", 0.0f, 0.0f, 0.0f, 0);
40     private Color color2 = decodeColor("nimbusFocus", 0.0f, 0.0f, 0.0f, 0);
41
42
43     //Array of current component colors, updated in each paint call
44 private Object JavaDoc[] componentColors;
45
46     public ScrollPanePainter(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 BORDER_ENABLED_FOCUSED: paintBorderEnabledAndFocused(g); break;
60             case BORDER_ENABLED: paintBorderEnabled(g); break;
61
62         }
63     }
64         
65
66
67     @Override JavaDoc
68     protected final PaintContext getPaintContext() {
69         return ctx;
70     }
71
72     private void paintBorderEnabledAndFocused(Graphics2D g) {
73         rect = decodeRect1();
74         g.setPaint(color1);
75         g.fill(rect);
76         rect = decodeRect2();
77         g.setPaint(color1);
78         g.fill(rect);
79         rect = decodeRect3();
80         g.setPaint(color1);
81         g.fill(rect);
82         rect = decodeRect4();
83         g.setPaint(color1);
84         g.fill(rect);
85         path = decodePath1();
86         g.setPaint(color2);
87         g.fill(path);
88
89     }
90
91     private void paintBorderEnabled(Graphics2D g) {
92         rect = decodeRect1();
93         g.setPaint(color1);
94         g.fill(rect);
95         rect = decodeRect2();
96         g.setPaint(color1);
97         g.fill(rect);
98         rect = decodeRect3();
99         g.setPaint(color1);
100         g.fill(rect);
101         rect = decodeRect4();
102         g.setPaint(color1);
103         g.fill(rect);
104
105     }
106
107
108
109     private Rectangle2D decodeRect1() {
110             rect.setRect(decodeX(0.6f), //x
111 decodeY(0.4f), //y
112 decodeX(2.4f) - decodeX(0.6f), //width
113 decodeY(0.6f) - decodeY(0.4f)); //height
114 return rect;
115     }
116
117     private Rectangle2D decodeRect2() {
118             rect.setRect(decodeX(0.4f), //x
119 decodeY(0.4f), //y
120 decodeX(0.6f) - decodeX(0.4f), //width
121 decodeY(2.6f) - decodeY(0.4f)); //height
122 return rect;
123     }
124
125     private Rectangle2D decodeRect3() {
126             rect.setRect(decodeX(2.4f), //x
127 decodeY(0.4f), //y
128 decodeX(2.6f) - decodeX(2.4f), //width
129 decodeY(2.6f) - decodeY(0.4f)); //height
130 return rect;
131     }
132
133     private Rectangle2D decodeRect4() {
134             rect.setRect(decodeX(0.6f), //x
135 decodeY(2.4f), //y
136 decodeX(2.4f) - decodeX(0.6f), //width
137 decodeY(2.6f) - decodeY(2.4f)); //height
138 return rect;
139     }
140
141     private Path2D decodePath1() {
142         path.reset();
143         path.moveTo(decodeX(0.4f), decodeY(0.4f));
144         path.lineTo(decodeX(0.4f), decodeY(2.6f));
145         path.lineTo(decodeX(2.6f), decodeY(2.6f));
146         path.lineTo(decodeX(2.6f), decodeY(0.4f));
147         path.curveTo(decodeAnchorX(2.5999999046325684f, 0.0f), decodeAnchorY(0.4000000059604645f, 0.0f), decodeAnchorX(2.880000352859497f, 0.09999999999999432f), decodeAnchorY(0.4000000059604645f, 0.0f), decodeX(2.8800004f), decodeY(0.4f));
148         path.curveTo(decodeAnchorX(2.880000352859497f, 0.09999999999999432f), decodeAnchorY(0.4000000059604645f, 0.0f), decodeAnchorX(2.880000352859497f, 0.0f), decodeAnchorY(2.879999876022339f, 0.0f), decodeX(2.8800004f), decodeY(2.8799999f));
149         path.lineTo(decodeX(0.120000005f), decodeY(2.8799999f));
150         path.lineTo(decodeX(0.120000005f), decodeY(0.120000005f));
151         path.lineTo(decodeX(2.8800004f), decodeY(0.120000005f));
152         path.lineTo(decodeX(2.8800004f), decodeY(0.4f));
153         path.lineTo(decodeX(0.4f), decodeY(0.4f));
154         path.closePath();
155         return path;
156     }
157
158
159
160
161 }
162
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