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


1 /*
2  * EditorPanePainter.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 EditorPanePainter 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 EditorPanePainter 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_SELECTED = 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 EditorPanePainter would be created. For the moment at least,
38 //however, all are created for each instance.
39 private Color color1 = decodeColor("nimbusBlueGrey", -0.015872955f, -0.07995863f, 0.15294117f, 0);
40     private Color color2 = decodeColor("nimbusLightBackground", 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 EditorPanePainter(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 BACKGROUND_DISABLED: paintBackgroundDisabled(g); break;
60             case BACKGROUND_ENABLED: paintBackgroundEnabled(g); break;
61             case BACKGROUND_SELECTED: paintBackgroundSelected(g); break;
62
63         }
64     }
65         
66
67
68     @Override JavaDoc
69     protected final PaintContext getPaintContext() {
70         return ctx;
71     }
72
73     private void paintBackgroundDisabled(Graphics2D g) {
74         rect = decodeRect1();
75         g.setPaint(color1);
76         g.fill(rect);
77
78     }
79
80     private void paintBackgroundEnabled(Graphics2D g) {
81         rect = decodeRect1();
82         g.setPaint(color2);
83         g.fill(rect);
84
85     }
86
87     private void paintBackgroundSelected(Graphics2D g) {
88         rect = decodeRect1();
89         g.setPaint(color2);
90         g.fill(rect);
91
92     }
93
94
95
96     private Rectangle2D decodeRect1() {
97             rect.setRect(decodeX(0.0f), //x
98 decodeY(0.0f), //y
99 decodeX(3.0f) - decodeX(0.0f), //width
100 decodeY(3.0f) - decodeY(0.0f)); //height
101 return rect;
102     }
103
104
105
106
107 }
108
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