Image Map

ImageMap.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ImageMap extends JApplet {
   private ImageIcon mapImage;
   private int width, height;

   public void init()
   {
      addMouseListener(
         new MouseAdapter() {
            public void mouseExited( MouseEvent e )
            {
               showStatus( "Pointer outside applet" );
            }
         }
      );

      addMouseMotionListener(
         new MouseMotionAdapter() {
            public void mouseMoved( MouseEvent e )
            {
               showStatus( translateLocation( e.getX() ) );
            }
         }
      );

      mapImage = new ImageIcon( "icons2.gif" ); 
      width = mapImage.getIconWidth();
      height = mapImage.getIconHeight();
      setSize( width, height );
   }

   public void paint( Graphics g )
   {
      mapImage.paintIcon( this, g, 0, 0 );
   }
 
   static final String str[] = {
	   "Common Programming Error", "Good Programming Practice",
	   "Performance Tip", "Portability Tip", 
	   "Software Engineering Observation","Testing and Debugging Tip"
   };

   public String translateLocation( int x )
   {
      // determine width of each icon (there are 6)
      int iconWidth = width / 6;
	  int idx = x / iconWidth;
	  return (idx<str.length? str[idx]: "");
   }
} 

Maintained by John Loomis, last updated 19 July 2000