KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > java2d > CustomControls


1 /*
2  * @(#)CustomControls.java 1.11 06/08/09
3  *
4  * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * -Redistribution of source code must retain the above copyright notice, this
10  * list of conditions and the following disclaimer.
11  *
12  * -Redistribution in binary form must reproduce the above copyright notice,
13  * this list of conditions and the following disclaimer in the documentation
14  * and/or other materials provided with the distribution.
15  *
16  * Neither the name of Sun Microsystems, Inc. or the names of contributors may
17  * be used to endorse or promote products derived from this software without
18  * specific prior written permission.
19  *
20  * This software is provided "AS IS," without a warranty of any kind. ALL
21  * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
22  * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
23  * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
24  * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
25  * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
26  * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
27  * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
28  * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
29  * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
30  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
31  *
32  * You acknowledge that this software is not designed, licensed or intended
33  * for use in the design, construction, operation or maintenance of any
34  * nuclear facility.
35  */

36
37 /*
38  * @(#)CustomControls.java 1.11 06/08/09
39  */

40
41 package java2d;
42
43 import java.awt.*;
44 import java.awt.event.*;
45 import javax.swing.*;
46 import javax.swing.border.EtchedBorder JavaDoc;
47
48 /**
49  * A convenience class for demos that use Custom Controls. This class
50  * sets up the thread for running the custom control. A notifier thread
51  * is started as well, a flashing 2x2 rect is drawn in the upper right corner
52  * while the custom control thread continues to run.
53  */

54 public abstract class CustomControls extends JPanel implements Runnable JavaDoc {
55
56
57     protected Thread JavaDoc thread;
58     protected boolean doNotifier;
59     private CCNotifierThread ccnt;
60     private String JavaDoc name = "foo.bar Demo";
61     private static final Color blue = new Color(204, 204, 255);
62
63
64     public CustomControls() {
65         setBorder(new EtchedBorder JavaDoc());
66         addMouseListener(new MouseAdapter() {
67             public void mouseClicked(MouseEvent e) {
68                 if (thread == null) { start(); } else { stop(); }
69             }
70         });
71     }
72
73     public CustomControls(String JavaDoc name) {
74         this();
75         this.name = name + " Demo";
76     }
77
78     public void paintComponent(Graphics g) {
79         super.paintComponent(g);
80         g.setColor(doNotifier ? blue : Color.gray);
81         g.fillRect(getSize().width-2, 0, 2, 2);
82     }
83
84     public void start() {
85         if (thread == null) {
86             thread = new Thread JavaDoc(this);
87             thread.setPriority(Thread.MIN_PRIORITY);
88             thread.setName(name + " ccthread");
89             thread.start();
90             (ccnt = new CCNotifierThread()).start();
91             ccnt.setName(name + " ccthread notifier");
92         }
93     }
94
95     public synchronized void stop() {
96         if (thread != null) {
97             thread.interrupt();
98             if (ccnt != null) {
99                 ccnt.interrupt();
100             }
101         }
102         thread = null;
103     }
104
105
106     // Custom Controls override the run method
107
public void run() { }
108
109
110     /**
111      * Notifier that the custom control thread is running.
112      */

113     class CCNotifierThread extends Thread JavaDoc {
114         public void run() {
115             while (thread != null) {
116                 doNotifier = !doNotifier;
117                 repaint();
118                 try { Thread.sleep(444); } catch (Exception JavaDoc ex) { break; }
119             }
120             doNotifier = false; repaint();
121         }
122     }
123 }
124
Popular Tags