//Worksheet 5
//Introduction to Events
//Responding to Mouse clicks

//The aim of this exercise is to make the system respond to mouse clicks and to:
//1 display the co-ordinates of the mouse
//2 count the number of clicks.

//Modify the Demo code as follows
import java.applet.*;
import java.awt.*;
import java.awt.event.*;


	public class MouseRedrawDemo extends Applet implements MouseListener {


		int nclicks, x, y, cx=100, cy=400, rings;
		Font f = new Font ( " Monoplane", Font.BOLD, 14);
		
		public void init () {

	  		addMouseListener(this);
			setBackground(new Color ( 204, 51, 102));
		}  

  public void paint (Graphics g) {

			g.setFont(f);
			g.setColor(new Color(112, 204, 255));
			g.fillRect(x,y,400,100);
			g.setColor(Color.black);
			g.drawRect(x,y,400,100);
			g.drawString( " The number of mouse clicks is " + nclicks, x+50, y+30);
			g.drawString( " Mouse coordinates are " + x + ", " +  y, x+50, y+70);

			for(rings=0;rings < 120; rings+=40){
			g.setColor(new Color(112, 204, 255));
			g.fillOval(cx+rings,cy,50,50);
			g.setColor(Color.black);
			g.drawOval(cx+rings,cy,50,50);
			if(rings < 80){
			g.setColor(new Color(112, 204, 255));
			g.fillOval(cx+(rings+25),cy+25,50,50);
			g.setColor(Color.black);
			g.drawOval(cx+(rings+25),cy+25,50,50);
			}
			}

		}

		public void mouseClicked(MouseEvent e) {

			x = e.getX();
			y = e.getY();
			nclicks++;
			repaint();
	   
		}
		public void mouseReleased(MouseEvent e) {
		// Method not being used
		 }
		public void mousePressed(MouseEvent e) {
		// Method not being used
		 }
		public void mouseEntered(MouseEvent e) {
		// Method not being used
		 }
		public void mouseExited(MouseEvent e) {
		// Method not being used
		}
}

/*

Note the size of the window is fixed by the dimensions in the html file (unlike the appletviewer where the screen can be expanded)


Problems

1 Write an applet the draws five interlocking rings as shown below


	Include the hidden lines.
	This is a simple form of the Olympic rings.
	Add colour to the rings.


2 The actual Olypmic rings are not in a single  row.

	Redraw the rings so that the 2nd and 4th rings are below the other three.
	Try to add thickness to the rings.

3 Write a program that produces the verses for the 12 days of   n    Christmas.
*/