//*********************************************************************
//*  Programmer    : Jang Kyu-O(Àå ±Ô¿À)                              *
//*  Date          : 1996/2/10                                        *
//*  E-Mail        : kojang@ctkhost.ctk.co.kr                         *
//*  Tel           : +82-02-3149-4821                                 *
//*  Address       : Á¦À̾¾Çö ¿¤¸²³×Æ®»ç¾÷º»ºÎ À¥ÆÀ                   *
//*********************************************************************

import java.applet.*;
import java.awt.*;
import java.lang.*;
import java.io.*;

class BarThread extends Thread
{
    int      size;

    public BarThread() {
        size = 10;
    }

    public int getSize(){ return size; }

    public void run() {
        for (int i = 0; i < 20; i++) {
            size+=10;
            try {
                sleep((int)(Math.random() * 1000));
            } catch (InterruptedException e) {}
        }
    }
}

public class BarThreadTest extends Applet implements Runnable
{
    Thread        updateThread;
    BarThread     One=null, Two=null;

    public void init() {
    }

    public boolean mouseDown(Event evt, int x, int y) {
        if(updateThread != null)
            updateThread = null;
        if(One != null)
            One = null;
        if(Two != null)
            Two = null;

        updateThread = new Thread(this);
        One = new BarThread();
        Two = new BarThread();

        updateThread.start();
        One.start();
        Two.start();

        return true;
    }

    public void stop() {
        if (updateThread.isAlive()) {
            updateThread.stop();
            updateThread = null;
        }
        if (One.isAlive()) {
            One.stop();
            One = null;
        }
        if (Two.isAlive()) {
            Two.stop();
            Two = null;
        }
    }

    public void run() {
        while (updateThread != null) {
            repaint();
            try {
                updateThread.sleep(10);
            } catch (InterruptedException e) {
            }
        }
    }    

    public void paint(Graphics g) {
        update(g);
    }

    public void update(Graphics g) {
        g.setColor(Color.lightGray);
        g.fillRect(0, 0, size().width, size().height);

        if(One!=null && Two!=null) {
            g.setColor(Color.blue);
            g.fill3DRect(10, 50, One.getSize(), 20, true);
            g.setColor(Color.red);
            g.fill3DRect(10, 100, Two.getSize(), 20, true);

            g.setFont(new Font("Helvista", 1, 20));
            g.setColor(new Color(0, 0, 170));
            g.drawString("Larger bar size...", 10, 150);
        } else {
            g.setFont(new Font("Helvista", 1, 20));
            g.setColor(new Color(0, 0, 170));
            g.drawString("Press mouse button...", 10, 150);
        }

    }
}