//
// ** Muehlen **   Anfang: etwa November 1998,  letzte Änderung: später,
// Java Version 1.0
//

import java.awt.*;
import java.applet.*;

public class Muehlen extends Applet implements Runnable {

   Thread r;
   static Bild m[] = new Bild[3];

   public void init() {
      setBackground(Color.lightGray);
      for(int i=0; i < 3; i++) {
         m[i]=new Bild();
         m[i].setBackground(Color.white);  }
      Knoepfe k = new Knoepfe();       
      GridBagConstraints c = new GridBagConstraints();
      GridBagLayout gr = new GridBagLayout();
      setLayout(gr);
      c.insets=new Insets(1,1,1,1);
      c.fill=c.BOTH;
      c.weightx=1;
      c.weighty=5;      
      gr.setConstraints(m[0],c);
      add(m[0]);       
      gr.setConstraints(m[1],c);
      add(m[1]);
      c.gridwidth=c.REMAINDER; 
      gr.setConstraints(m[2],c);
      add(m[2]); 
      c.weightx=1;
      c.weighty=2;
      gr.setConstraints(k,c);
      add(k);  }

   public void start() {
      if (r == null) { r = new Thread(this); r.start(); } }
   
   public void stop() {
	   Frage f = new Frage();
      if (r != null) { r.stop(); r=null; } }

   public void run() {
      while (true) {
         for(int i=0; i < 3; i++) {
            m[i].wa=m[i].wa+m[i].v;
            m[i].buff();  }
         try { Thread.sleep(10); }
         catch (InterruptedException e) { }  
      } } 
}


class Bild extends Canvas {
   Color co = new Color(225,255,255);       //Farbe der Mühlenflügel
   int wa;                                  //Winkel-Anfangswert
   int wi = 25;                             //Winkel-Bogenlänge
   int ho;                                  //Höhe des Bildfenster
   int br;                                  //Breite des Bildfenster
   int dm;                                  //Durchmesser
   int v = 1;                               //Geschwindigkeit
   boolean es;                              //Schalter für den Punkt
   Image off;                               //das Zwischenbild
   Graphics o;

   public void buff() {
      Rectangle r = bounds();
      if (ho != r.height || br != r.width) {
         ho = r.height;
         br = r.width;
         off = createImage(br,ho);
         o = off.getGraphics();  } 
      dm = (int)(br*0.7);
      o.setColor(Color.white);
      o.fillRect(br/2-dm/2, br/2-dm/2, dm, dm); 
      o.setColor(co);
      o.fillArc(br/2-dm/2, br/2-dm/2, dm, dm, wa*(-1), wi);
      o.fillArc(br/2-dm/2, br/2-dm/2, dm, dm, wa*(-1)+180, wi);
      repaint();   }

   public void update(Graphics g) {
      if (es == true) g.clipRect(0,0,br,ho);
        else  g.clipRect(br/2-dm/2, br/2-dm/2, dm, dm);
      es=false;
      paint(g); }

   public void paint(Graphics g) {
      g.drawImage(off, 0, 0, this);  }

   public boolean mouseDown(Event ev, int x, int y) {
      for(int i=0; i < 3; i++) {
         if (this == Muehlen.m[i]) {
             Knoepfe.mm = Muehlen.m[i]; 
             Knoepfe.lb.setText(""+(i+1));
             Muehlen.m[i].o.setColor(new Color(225,255,255));  }
           else Muehlen.m[i].o.setColor(Color.white);
         Muehlen.m[i].es=true;
         Muehlen.m[i].o.fillOval(10, ho-25, 15, 15);
         Muehlen.m[i].repaint();  }
      Knoepfe.lw.setText(""+Knoepfe.mm.wi);
      Knoepfe.lv.setText(""+Knoepfe.mm.v);      
      return true; 
      }  }


class Knoepfe extends Panel { 
   static Bild mm; 
   static Label lv, lw, lb;
   Button b1, b2;

   Knoepfe()  {
      mm = Muehlen.m[0];
      setLayout(new GridLayout(3,8,3,3));
      add(new Label("Klaps -", Label.RIGHT));
      add(new Label("Mühle "));
      add(new Label("Nr.:"));
      add(new Label());
      lb=new Label("1");
      add(lb);
      add(new Label());
      add(new Label());
      add(new Label());
      add(new Label("Farbe:"));
      add(new Button("rot"));
      add(new Button("blau"));
      add(new Button("grün"));
      add(new Button("orange"));
      add(new Button("gelb"));
      add(new Button("cyan"));
      add(new Button("magenta"));
      add(new Label("Speed:"));
      lv=new Label("", Label.CENTER);
      add(lv);
      add(new Button("-"));
      add(new Button("+"));
      add(new Label("Breite:", Label.CENTER));
      lw = new Label("", Label.CENTER);
      add(lw);
      b1 = new Button("-");
      b2 = new Button("+");
      add(b1);
      add(b2);   }

   public boolean action(Event ev, Object arg) { 
      if (ev.target instanceof Button) {
         String s = (String)arg;
         if(s.equals("rot")) {mm.co=Color.red; }
         if(s.equals("blau")) mm.co=Color.blue;
         if(s.equals("grün")) mm.co=Color.green;
         if(s.equals("orange")) mm.co=Color.orange;
         if(s.equals("gelb")) mm.co=Color.yellow;
         if(s.equals("+") && ev.target != b2) mm.v=mm.v+1;
         if(s.equals("-") && ev.target != b1) mm.v=mm.v-1;
         if(s.equals("cyan")) mm.co=Color.cyan;
         if(s.equals("magenta")) mm.co=Color.magenta;
         if(ev.target == b2) mm.wi=mm.wi+5;
         if(ev.target == b1) mm.wi=mm.wi-5;
         lw.setText(""+mm.wi);
         lv.setText(""+mm.v);  }
      return true;  }         
}


class Frage extends Frame {

	Frage() {
		super("   ?  ?  ?   ");
		setBackground(Color.white);
		setLayout(new GridLayout(2,1,20,20));
		Canvas can = new C();
		can.setBackground(Color.white);
		can.setForeground(Color.red);
		add(can);
		Panel pan = new Panel();
		pan.setBackground(Color.white);
		add(pan);
		pan.add(new Button(" N E I N  ! ! ! "));
		resize(450,300);
		move(220,200);
		show();
	}
	public boolean handleEvent (Event evt) {
		if (evt.id == Event.ACTION_EVENT) { action(evt, evt.arg); }
		if (evt.id == evt.WINDOW_DESTROY ) {
			hide(); }
		return false;
	}
	public boolean action(Event ev, Object arg) {
        if (ev.target instanceof Button) {
        String s = (String)arg;
			if (s.equals(" N E I N  ! ! ! ")) {
             hide();
			}
		}        
        return true;
	}
}

class C extends Canvas {

	String s1 = "Möchtest du wirklich nicht mehr";
	String s2 = "mit den schönen Mühlchen spielen ?";
	Font f = new Font("Helvetica", Font.BOLD, 20);
	int x1, x2, y1, y2;
	int br;

	public void paint(Graphics g) {
		br = bounds().width;
		FontMetrics fm = getFontMetrics(f);
		int la = fm.stringWidth(s1);
		x1 = (br-la)/2;
		y1 = 40;
		la = fm.stringWidth(s2);
		x2 = (br-la)/2;		
		y2 = 80;
		g.setFont(f);
		g.drawString(s1, x1, y1);
		g.drawString(s2, x2, y2);
	}
}