import java.applet.Applet;
import java.awt.event.*;
import java.awt.*;


          public class test1 extends Applet {

	      GridBagLayout zeek;
	      GridBagConstraints c;
	      MotionControl p_up,p_down,p_left,p_right;
	      FunnyCanvas plot1;
	      Canvas plot2;
	      Button but;
	      ColoredPolygon poly;
	      Panel X;


	      public void init() {

		  zeek=new GridBagLayout();
		  c=new GridBagConstraints();
		  setLayout(zeek);

	          poly=new ColoredPolygon();
	          poly.P=poly.EXAMPLE;
	          poly.C=Color.yellow;

		  plot1=new FunnyCanvas(poly);   
                  plot1.resize(300,300); 
                  p_up= new MotionControl(plot1,"up");
                  p_down= new MotionControl(plot1,"down");
                  p_left= new MotionControl(plot1,"left");
                  p_right= new MotionControl(plot1,"right");

                  c.gridwidth=GridBagConstraints.REMAINDER;
                  zeek.setConstraints(p_up,c);  

		  X=new Panel();
		  X.add(p_left);
		  X.add(plot1);
		  X.add(p_right);
		  X.setBackground(Color.blue);

                  zeek.setConstraints(X,c);
		  zeek.setConstraints(p_down,c);

		  add(p_up);
		  add(X);
		  add(p_down);

	      }

          public void paint(Graphics g) {
             g.setColor(Color.blue);
             g.fillRect(0,0,500,500); 
	     g.setFont(new Font("Helvetica",Font.PLAIN,25));
	     g.setColor(Color.white);
	     g.drawString("Rich: Applet 7",10,30);
	  }

	  }


class ColoredPolygon extends Polygon {
    Polygon P;
    Color C;
    Polygon EXAMPLE;

    ColoredPolygon() {
	P=new Polygon();
	this.P=P;
	this.C=C;

	EXAMPLE=new Polygon();
	this.EXAMPLE=EXAMPLE;
	int x[]={100,150,200,150};
	int y[]={150,200,150,100};
	this.EXAMPLE.xpoints=x;
	this.EXAMPLE.ypoints=y;
	this.EXAMPLE.npoints=4;
    }






}



class DBCanvas extends Canvas {
    
    public void update(Graphics g) {
        Graphics g2;
        Image offscreen = null;
        offscreen = createImage(size().width, size().height);
        g2 = offscreen.getGraphics();
        paint(g2);
        g.drawImage(offscreen, 0, 0, this);
	g2.dispose();
	offscreen.flush();
    }
}






class FunnyCanvas extends DBCanvas {
    Canvas plot;
    ColoredPolygon P;
    MouseEvent e;
    FunnyCanvas(ColoredPolygon poly) {
	plot=new Canvas();
        this.plot=plot;
	this.P=poly;
	validate();
    }

    public void paint(Graphics g) {
             g.setColor(Color.black);
             g.fillRect(0,0,400,400); 
             g.setColor(this.P.C);
             g.fillPolygon(this.P.P);
    }

}


class MotionControl extends Panel {
    Button but1;
    FunnyCanvas fp;
    String str;
    MotionControl(FunnyCanvas fp, String str) { 
        GridBagConstraints c = new GridBagConstraints();
	this.fp=fp;
	this.str=str;
        setBackground(Color.black);
        GridBagLayout gb = new GridBagLayout();
        setLayout(gb);
        this.but1 = new Button("   ");
	this.but1.setBackground(Color.red);
	gb.setConstraints(but1,c);
	add(but1);
    }


    public boolean action(Event e, Object arg) {
        if (e.target instanceof Button) {
		int i;

		if(this.str=="up") {
		for(i=0;i<4;++i) 
                   fp.P.P.ypoints[i]=fp.P.P.ypoints[i]-15;
		}

		if(this.str=="down") {
		for(i=0;i<4;++i) 
                   fp.P.P.ypoints[i]=fp.P.P.ypoints[i]+15;
		}

		if(this.str=="left") {
		for(i=0;i<4;++i) 
                   fp.P.P.xpoints[i]=fp.P.P.xpoints[i]-15;
		}


		if(this.str=="right") {
		for(i=0;i<4;++i) 
                   fp.P.P.xpoints[i]=fp.P.P.xpoints[i]+15;
		}
		fp.repaint();
	}
	return(true);
    }
}