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import java.awt.Button;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageProducer;
import javax.swing.JApplet;
public class FilterLab extends JApplet implements ActionListener {
private Image originalImage, filteredImage;
private Button btn = new Button("FILTER");
private CropImageFilter cropFilter = new CropImageFilter(50, 20, 120, 140);
public void init() {
originalImage = getImage(getDocumentBase(), "e.gif");
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(originalImage, 0);
try {
tracker.waitForAll();
} catch (Exception e) {
}
filteredImage = originalImage;
btn.addActionListener(this);
add(btn);
}
public void actionPerformed(ActionEvent ev) {
filter();
repaint();
}
private void filter() {
ImageProducer producer = originalImage.getSource();
producer = new FilteredImageSource(producer, cropFilter);
filteredImage = createImage(producer);
}
public void paint(Graphics g) {
g.drawImage(originalImage, 10, 50, this);
g.drawImage(filteredImage, 271, 50, this);
}
}
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