//File:	Surprise4.java
import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Surprise4 extends Applet
{
	//Exploding and imploding balloons
	//With Small, Medium, Large, .. added

 	public void init()
 	{
 		setBackground (Color.white);
 	}
 	 	
 	public void paint (Graphics g)
  	{
		// Added array of size_labels
		String [] size_labels = {
			"Small", "Medium", "Large", "XL", "XXL" };
		// Note the extra blanks on Small
  		Dimension size = getSize();
		int	size_bin;  // Added index for size_labels
    		
    		int 	diameter = 0,
        			w = size.width,
        			h = size.height,
        			cmin = (int)Math.min(w, h);

    		// g.setColor(Color.yellow);  // was here
    		while (diameter < cmin)
    		{
			int ws, hf;  // needed to position labels
			Font current;  // note the different style
			FontMetrics metrics;  // when we do this later

			g.setColor(Color.yellow); //now here
    			g.fillOval((w-diameter)/2,  (h-diameter)/2, 
                 				diameter,  diameter);
      			// Note it is important to do this
			size_bin = (5*diameter)/cmin;
			// Before this
			diameter++;

     	    		// Added code for the size labels
			current = getFont();
	    		metrics = getFontMetrics (current);
        	        ws = metrics.stringWidth(size_labels[size_bin]);
                	hf = metrics.getHeight();
                    		
    			g.setColor(Color.blue);
    			g.drawString(size_labels[size_bin],
				 (w-ws)/2, (h+hf)/2);
     			
      			try
      			{
      				Thread.sleep(10);               // sleep for 10 msec
      			}
      			catch (InterruptedException t)
      			{
      			}
    		}

  			g.setColor(Color.yellow); //need to draw oval again
					 				  //to overwrite old labels
    		g.fillOval((w-diameter)/2,  (h-diameter)/2, 
                 				diameter,  diameter);
  	    	Font current = getFont();
    		FontMetrics metrics = getFontMetrics (current);
                int ws = metrics.stringWidth("Surprise!");
                int hf = metrics.getHeight();
                    		
    		g.setColor(Color.red);
    		g.drawString("Surprise!", (w-ws)/2, (h+hf)/2);
	
    		try
    		{
    			Thread.sleep(1000);               // sleep for 1 sec
    		}
    		catch (InterruptedException t)
    		{
    		}
    		
    		while (diameter > 1)
    		{
    			//The following draws circles in yellow,
    			//pauses, then redraws them in white (the background color),
    			//thus effectively erasing them.  It then changes the color
    			//back to yellow and repeats the process for a circle
    			//of diameter one less than the previous one.

				//Note that we have to rewrite the labels in white
				//or medium will show behind small
    			

				// int ws, hf;  // already declared above
				// Font current;  
				// FontMetrics metrics;

    			g.setColor(Color.yellow);
    			g.fillOval((w-diameter)/2,  (h-diameter)/2, 
                 				diameter,  diameter);
      			// Note the -1
				size_bin = (5*(diameter-1))/cmin;

     	   		// Added code for the size labels again
				current = getFont();
	    		metrics = getFontMetrics (current);
        	    ws = metrics.stringWidth(size_labels[size_bin]);
               	hf = metrics.getHeight();
                    		
    			g.setColor(Color.blue);
    			g.drawString(size_labels[size_bin],
				 (w-ws)/2, (h+hf)/2);
      			try
      			{
      				Thread.sleep(10);               // sleep for 10 msec
      			}
      			catch (InterruptedException t)
      			{
      			}
      		
    			g.setColor (Color.white);
    			g.fillOval((w-diameter)/2,  (h-diameter)/2, 
                 				diameter,  diameter);
    			g.drawString(size_labels[size_bin],
				 (w-ws)/2, (h+hf)/2);

                 				
                 	diameter--;
      			
    		}

    		repaint();	//calls update() which CLEARS THE WINDOW,
				//then calls paint()
    	}
}