PixelGrabber: getPixels() : PixelGrabber « java.awt.image « Java by API

1. Java by API
2. java.awt.image
3. PixelGrabber

PixelGrabber: getPixels()

// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski.  Copyright (c) 1997 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.applet.Applet;
import java.awt.AWTEvent;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.MouseEvent;
import java.awt.image.PixelGrabber;

public class MainClass extends Applet {
  Image i;

  PixelGrabber pg;

  public void init() {
    i = getImage(getDocumentBase(), "ora-icon.gif");
    pg = new PixelGrabber(i, 0, 0, -1, -1, false);
    pg.startGrabbing();
    enableEvents(AWTEvent.MOUSE_EVENT_MASK);
  }

  public void paint(Graphics g) {
    g.drawImage(i, 10, 10, this);
  }

  protected void processMouseEvent(MouseEvent e) {
    if (e.getID() == MouseEvent.MOUSE_CLICKED) {
      System.out.println("Status: " + pg.getStatus());
      System.out.println("Width:  " + pg.getWidth());
      System.out.println("Height: " + pg.getHeight());
      System.out.println("Pixels: " + (pg.getPixels() instanceof byte[] ? "bytes" : "ints"));
      System.out.println("Model:  " + pg.getColorModel());
    }
    super.processMouseEvent(e);
  }
}
           
       

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