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

public class HouseClassE extends java.applet.Applet 
                    implements ActionListener
// A graphics demo applet that creates the House class with
// move and size changing features and uses it.
{
     Graphics g;
     Canvas c;
     Button b1, b2, bleft, bright, bup, bdown, bsmaller, blarger;
     House h1;

     public void init()
     {
         c = new Canvas();
         c.setSize(200, 200);
         add(c);
         g = c.getGraphics();
         b1 = new Button("Start");
         b1.addActionListener(this);
         b2 = new Button("House");
         b2.addActionListener(this);
         bleft = new Button("Move left");
         bleft.addActionListener(this);
         bright = new Button("Move right");
         bright.addActionListener(this);
         bup = new Button("Move up");
         bup.addActionListener(this);
         bdown = new Button("Move down");
         bdown.addActionListener(this);
         bsmaller = new Button("Smaller");
         bsmaller.addActionListener(this);
         blarger = new Button("Larger");
         blarger.addActionListener(this);
         h1 = new House(50, 90, 100, 80, g);
         add(b1); add(b2); add(bleft); add(bright); 
         add(bup); add(bdown);  add(bsmaller); add(blarger);
     }

     public void actionPerformed(ActionEvent event)
     {
        Object cause = event.getSource();

        if (cause == b1) // Set background.
	{
           g.setColor(Color.white);
           g.fillRect(0, 0, 200, 200);
        }
        if (cause == b2) // Draw the house.
	{
            h1.draw();
	}
        if (cause == bleft)
	{
            h1.movelr(-1);
	}
        if (cause == bright)
	{
            h1.movelr(1);
	}
        if (cause == bup)
	{
            h1.moveud(-1);
	}
        if (cause == bdown)
	{
            h1.moveud(1);
	}
        if (cause == bsmaller)
	{
            h1.size(-1);
	}
        if (cause == blarger)
	{
            h1.size(1);
	}
     }

    public class House
    {
        protected int hx,hy,hwidth,hheight;
        protected Graphics hg;

        public House(int a, int b, int c, int d, Graphics h)
        {
            hx = a;
            hy = b;
            hwidth = c;
            hheight = d;
            hg = h;
        }

        public void draw()
	{
            hg.setColor(Color.blue);
            hg.fillRect(hx,hy,hwidth,hheight);
            hg.setColor(Color.black);
            hg.fillRect(hx-(hwidth/20),hy,
                         hwidth+(hwidth/10),hheight/3);
            hg.setColor(Color.green);
            hg.fillRect(hx+(2*hwidth/3),hy+hheight/2,
                      hwidth/6, hheight/2);
            hg.fillRect(hx+(hwidth/4),hy+hheight/2,
                      hwidth/6, hheight/8);
            hg.setColor(Color.red);
            hg.fillRect(hx+(3*hwidth/4), hy-hheight/8,
                       hwidth/8, hheight/8);
        }

        public void erase()
        {
            hg.setColor(Color.white);
            hg.fillRect(hx,hy,hwidth,hheight);
            hg.fillRect(hx-(hwidth/20),hy,
                         hwidth+(hwidth/10),hheight/3);
            hg.setColor(Color.white);
            hg.fillRect(hx+(3*hwidth/4), hy-hheight/8,
                       hwidth/8, hheight/8);
        }

        public void movelr(int j)
        {
            erase();
            hx = hx + (j * (1 + hwidth/10));
            draw();
        }

        public void moveud(int j)
        {
            erase();
            hy = hy + (j * (1 + hheight/10));
            draw();
        }

        public void size(int j)
        {
            erase();
            hwidth = hwidth + (j * (1 + hwidth/10));
            hheight = hheight + (j * (1 + hheight/10));
            draw();
        }
           
    }         
}