import java.awt.Graphics; 
import java.awt.Color; 
import java.awt.Font; 
import java.awt.FontMetrics; 

public class Scroll extends java.applet.Applet implements Runnable {
	String msg=" yet another ticker tape.. v2.0..    "+
		" send postcards to CvL@java.pages.de                ";
	Font myFont;
	FontMetrics myFontM;
	int delay = 200;

	protected Thread daemon;
	protected boolean threadSuspended = false;
	protected int pixelsToGo = 0;

	public void init() {
		setBackground(Color.black);

//		if (size().width < 10 || size().height < 10) {
//			size().width = 500;
//			size().height = 50;
//			resize(size().width, size().height);
//		}

		String tmp = getParameter("message");
		if (tmp != null) msg = tmp;

//		tmp = getParameter("delay");
//		if (tmp != null) delay = Integer.parseInt(tmp);
//		if (delay == 0) delay++;
		delay = 225;

		int size = (int)((double)size().height * 0.66); // wild guess
		int style = Font.PLAIN;
//		tmp = getParameter("font.size");
//		if (tmp != null) size = Integer.parseInt(tmp);
		size=36;
//		tmp = getParameter("font.style");
//		if (tmp != null) style = Integer.parseInt(tmp);
//		tmp = getParameter("font.family");
//		if (tmp == null) tmp = "Helvetica";
		tmp = "Courier";
		myFont = new Font(tmp, style, size);
		myFontM = getFontMetrics(myFont);
	}
	public void paint(Graphics g) {
	}
	public void update(Graphics g) {
		String buchstabe = msg.substring(0,1);
		msg = msg.substring(1) + buchstabe;
		pixelsToGo = myFontM.stringWidth(buchstabe)
			+ (buchstabe.charAt(0) == ' ' ? 2 : +4);

		g.copyArea(pixelsToGo, 0,
		   size().width-pixelsToGo, size().height,
		   -pixelsToGo, 0);
		g.setColor(Color.black);
		g.fillRect(size().width-pixelsToGo, 0,
		   size().width-1, size().height-1);

		g.setFont(myFont);
		// g.setColor(Color.red);
		g.setColor(Color.yellow);
		g.setColor(Color.red);
		g.drawString(buchstabe, size().width-(pixelsToGo+2),
			myFontM.getHeight()+1);
		g.drawString(buchstabe, size().width-(pixelsToGo+6),
			myFontM.getHeight()-1);
		g.setColor(Color.orange);
		g.drawString(buchstabe, size().width-(pixelsToGo+4),
			myFontM.getHeight());
	}
	public void start() {
		if (daemon == null) {
			daemon = new Thread(this);
			daemon.start();
		}
	}
	public void stop() {
		daemon.stop();
		daemon = null;
	}
	public void run() {
		Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
		while(daemon != null) {
			try {Thread.sleep(delay);}
			catch (InterruptedException e){}
			repaint();
		}
	}
	public boolean mouseDown(java.awt.Event evt, int x, int y) {
		if (threadSuspended) daemon.resume();
		else daemon.suspend();

		threadSuspended = !threadSuspended;

		return true;
	}
}