import java.awt.image.*;
import java.util.*;

public class NewImageProducer implements ImageProducer
{
   private Vector _v = null;

   public NewImageProducer()
   {
      _v = new Vector();
   }

   public void addConsumer(ImageConsumer ic)
   {
      if (isConsumer(ic) == false) _v.addElement(ic);
   }

   public void removeConsumer(ImageConsumer ic)
   {
      if (isConsumer(ic) == true) _v.removeElement(ic);
   }

   public boolean isConsumer(ImageConsumer ic)
   {
      return _v.indexOf(ic) > -1;
   }

   public void startProduction(ImageConsumer ic)
   {
      addConsumer(ic);

      int x = 128;
      int y = 128;

      int [] rgn = new int [x * y];

      for (int i = 0; i < x * y; i++) rgn[i] = i * 2;

      Hashtable ht = new Hashtable();

      ColorModel cm = new DirectColorModel(24, 0x0000FF, 0x00FF00, 0xFF0000);

      Vector v = (Vector)_v.clone();

      Enumeration e = v.elements();

      while (e.hasMoreElements())
      {
         ic = (ImageConsumer)e.nextElement();

         ic.setColorModel(cm);
         ic.setDimensions(x, y);
         ic.setProperties(ht);
         ic.setHints(ImageConsumer.RANDOMPIXELORDER);
         ic.setPixels(0, 0, x, y, cm, rgn, 0, x);
         ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
      }
   }

   public void requestTopDownLeftRightResend(ImageConsumer ic)
   {
      ;
   }
}