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Java Source | 2002-09-06 | 4.0 KB | 122 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
- * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
- * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
- * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
- * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
- * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
- * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
- * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)CustomControls.java 1.5 02/06/13
- */
-
- package java2d;
-
- import java.awt.*;
- import java.awt.event.*;
- import javax.swing.*;
-
- /**
- * A convenience class for demos that use Custom Controls. This class
- * sets up the thread for running the custom control. A notifier thread
- * is started as well, a flashing 2x2 rect is drawn in the upper right corner
- * while the custom control thread continues to run.
- */
- public abstract class CustomControls extends JPanel implements Runnable {
-
-
- protected Thread thread;
- protected boolean doNotifier;
- private CCNotifierThread ccnt;
- private String name = "foo.bar Demo";
- private static final Color blue = new Color(204, 204, 255);
-
-
- public CustomControls() {
- setBackground(Color.gray);
- addMouseListener(new MouseAdapter() {
- public void mouseClicked(MouseEvent e) {
- if (thread == null) { start(); } else { stop(); }
- }
- });
- }
-
- public CustomControls(String name) {
- this();
- this.name = name + " Demo";
- }
-
- public void paintComponent(Graphics g) {
- super.paintComponent(g);
- g.setColor(doNotifier ? blue : Color.gray);
- g.fillRect(getSize().width-2, 0, 2, 2);
- }
-
- public void start() {
- if (thread == null) {
- thread = new Thread(this);
- thread.setPriority(Thread.MIN_PRIORITY);
- thread.setName(name + " ccthread");
- thread.start();
- (ccnt = new CCNotifierThread()).start();
- ccnt.setName(name + " ccthread notifier");
- }
- }
-
- public synchronized void stop() {
- if (thread != null) {
- thread.interrupt();
- if (ccnt != null) {
- ccnt.interrupt();
- }
- }
- thread = null;
- }
-
-
- // Custom Controls override the run method
- public void run() { }
-
-
- /**
- * Notifier that the custom control thread is running.
- */
- class CCNotifierThread extends Thread {
- public void run() {
- while (thread != null) {
- doNotifier = !doNotifier;
- repaint();
- try { Thread.sleep(444); } catch (Exception ex) { break; }
- }
- doNotifier = false; repaint();
- }
- }
- }
-