CHRONOMETER

package com.infodavid.util;
/*
 * Copyright (c) 2001 David Rolland
 *
 * 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.
 *
 * 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. D.Rolland SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL D.Rolland
 * 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 D.Rolland 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.
 */
import java.awt.event.ActionEvent;

import java.io.Serializable;
/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2001
 * Company:      David Rolland, infodavid@chez.com
 * @author       David Rolland, infodavid@chez.com
 * @version 1
 */
public class Chronometer extends ListenedObjectImpl implements Runnable,
  Serializable {

  private Thread chronometre;
  private float step = 0;
  private long minutes = 0;
  private int delay = 100;

  public void reset() {
    step = 0;
    minutes = 0;
  }

  public void setDelay(int ms) { delay = ms; }

  public int getDelay() { return delay; }

  public void start()  {
    reset();

    chronometre = new Thread (this);
    chronometre.start();
  }

  public void cont() {
    if (chronometre != null) {
      chronometre.start();
    }
    else {
      start();
    }
  }

  public int[] getTime() {
    int time[] = new int[4];

    //heure
    time[0] = (int)(minutes / 60);
    //minute
    time[1] = (int)(minutes % 60);
    //seconde
    time[2] = (int)(((step * delay) / 1000) % 60);
    //dixieme
    time[3] = (int)((step * delay) % 10);

    return time;
  }

  protected boolean isAlive() {
    if (chronometre != null) {
      return chronometre.isAlive();
    }
    else {
      return false;
    }
  }

  protected void increment() {
    step++;

    final float minute = 60000 / (float)delay;

    if (step >= minute) {
      short i = (short)(step / minute);

      minutes += i;

      step -= i * minute;
    }

    raiseEvent(new ActionEvent(this, 0 , getClass().getName(), minutes, 0));
  }

  public void run() {
    try {
      while (isAlive()) {
        Thread.sleep(getDelay());

        increment();
      }
    } catch (InterruptedException e) { }
  }

  public void stop() {
    if (isAlive()) {
      chronometre.interrupt();
    }
  }
}