//   veraenderte Version eines JDK Beispiels 
 
import java.awt.*;
import java.applet.*;

import java.util.Vector;

public class DrawTest extends Applet {
    public void init() {
	setLayout(new BorderLayout());
	DrawPanel dp = new DrawPanel();
	add("Center", dp);
	add("South", new SKWahl(dp));
	dp.init();
    }

    public boolean handleEvent(Event e) {
	switch (e.id) {
	  case Event.WINDOW_DESTROY:
	    System.exit(0);
	    return true;
	  default:
	    return false;
	}
    }

    public static void main(String args[]) {
	Frame f = new Frame("DrawTest");
	DrawTest drawTest = new DrawTest();
	drawTest.init();
	drawTest.start();

	f.add("Center", drawTest);
	f.resize(300, 300);
	f.show();
    }
}

class DrawPanel extends Panel {
    Vector lines = new Vector();
    Vector streckeOderKreis = new Vector();
    int x1,y1;
    boolean ziehen;
    boolean strecke;
    int x2,y2;

    public void init() {
       ziehen = false;
       strecke = true;
    }
    public DrawPanel() {
	setBackground(Color.white);
    }

   public void setStrecke() {
       strecke = true;
   }
   public void setKreis() {
       strecke = false;
   }
   public boolean handleEvent(Event e) {
	switch (e.id) {
	  case Event.MOUSE_DOWN:
		x1 = x2 = e.x;
		y1 = y2 = e.y;
		ziehen = true;
	    return true;
	  case Event.MOUSE_UP:
		lines.addElement(new Rectangle(x1, y1, e.x, e.y));
		      // leichter Missbrauch von rectangle 
		streckeOderKreis.addElement(new Boolean(strecke));
		ziehen = false;
	    repaint();
	    return true;
	  case Event.MOUSE_DRAG:
		x2 = e.x;
		y2 = e.y;
	    repaint();
	    return true;
	  case Event.WINDOW_DESTROY:
	    System.exit(0);
	    return true;
	  default:
	    return false;
	}
    }

 
    public void paint(Graphics g) {
	int np = lines.size();

	/* Zeichne alle Strecken und Ellipsen */
	for (int i=0; i < np; i++) {
	    Rectangle p = (Rectangle)lines.elementAt(i);
         if (((Boolean) streckeOderKreis.elementAt(i)).booleanValue()) 
	 	    g.drawLine(p.x, p.y, p.width, p.height);
	  	else 
	  	g.drawOval(p.x, p.y, p.width-p.x, p.height-p.y);
	}
	if (ziehen) {
	  if (strecke)
	      {g.drawLine(x1, y1, x2, y2);}
	  else {
	        g.drawOval(x1,y1,x2-x1,y2-y1);
	  }
    }
    }
}


class SKWahl extends Panel {
    DrawPanel target;

    public SKWahl(DrawPanel target) {
	this.target = target;
	setLayout(new FlowLayout());
	Choice SoderK = new Choice();
	SoderK.addItem("Strecke");
	SoderK.addItem("Ellipse");
	SoderK.setBackground(Color.lightGray);
	add(SoderK);
    }

    public void paint(Graphics g) {
	Rectangle r = bounds();
	g.setColor(Color.lightGray);
	g.draw3DRect(0, 0, r.width, r.height, false);
    }

    public boolean action(Event e, Object arg) {
	if (e.target instanceof Choice) {
	    String choice = (String)arg;
	    if (choice.equals("Strecke")) {
		   target.setStrecke();
	    } else if (choice.equals("Ellipse")) {
		   target.setKreis();
	    }
	}
	return true;
    }
}