// <applet code=LadyBugPop.class height=400 width=400></applet>

import java.awt.event.*;
import java.awt.*;

public class LadyBugPop extends java.applet.Applet implements Runnable
{
    Image bugimg;
    Thread  runner;
    int     scale;
    Image offscreenImage;
    Graphics offscreenGraphics;
    Dimension offscreenSize;
    
    public void init() 
    {
	MediaTracker tracker = new MediaTracker(this);
	bugimg = getImage(getCodeBase(), "ladybug.gif");
	tracker.addImage(bugimg, 1);

	try {
	    tracker.waitForAll();
	    if (tracker.isErrorAny())
		System.out.println("Error loading image");
	    else
		System.out.println("Image loaded...");
	}
	catch (Exception e) {
	    e.printStackTrace();
	}
    }

    public void start() {
	if (runner == null) {
	    runner = new Thread(this);
	    runner.start();
	}
    }

    public void stop() {
	runner = null;
    }
    
    public void run()
    {
	while (runner != null) {
	    
	    for (scale = 10; scale > 0; scale--) {
		showStatus("scale:  " + scale + "0%");
		repaint();
		try {
		    runner.sleep(200);
		}
		catch (InterruptedException e) {}
	    }

	    for (scale = 1; scale <= 10; scale++) {
		showStatus("scale:  " + scale + "0%");
		repaint();
		try {
		    runner.sleep(200);
		}
		catch (InterruptedException e) {}
	    }
	}
    }
    
    public void update(Graphics g) {
	Dimension d = getSize();
	if ((offscreenImage == null) ||
	    (d.width != offscreenSize.width) ||
	    (d.height != offscreenSize.height)) {

	    offscreenImage = createImage(d.width, d.height);
	    offscreenSize = d;
	    offscreenGraphics = offscreenImage.getGraphics();
	}
	offscreenGraphics.clearRect(0, 0, d.width, d.height);
	paint(offscreenGraphics);
	g.drawImage(offscreenImage, 0, 0, null);
    }

    public void destroy() {
	offscreenGraphics.dispose();
    }

    
    public void paint(Graphics g) 
    {
	// helps show the double buffering
	setBackground(Color.red);
	
	if (runner != null) {
	    g.drawImage(bugimg, 0, 0,
		bugimg.getWidth(this) * scale / 10,
		bugimg.getHeight(this) * scale / 10, this);
	}
    }
}