flip image in java
Tue Nov 11, 2008 8:08 pm
flip image in java
- Code:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.image.*;
public class FlipImageExample extends JFrame {
ShowPanel panel;
JButton button;
public FlipImageExample() {
super("Flip the image");
Container container = getContentPane();
panel = new ShowPanel();
container.add(panel);
Box box = Box.createHorizontalBox();
button = new JButton("Flip");
button.addActionListener(new ButtonListener());
box.add(Box.createHorizontalGlue());
box.add(button);
box.add(Box.createHorizontalGlue());
container.add(box, BorderLayout.NORTH);
addWindowListener(new WindowEventHandler());
setSize(350, 250);
setVisible(true);
}
class WindowEventHandler extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
public static void main(String arg[]) {
new FlipImageExample();
}
class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (!panel.flip) {
panel.flipImage();
panel.bufferedImage = panel.bufferedImage2;
panel.flip= true;
}
else {
panel.bufferedImage = panel.bufferedImage1;
panel.flip = false;
}
panel.repaint();
}
}
}
class ShowPanel extends JPanel {
BufferedImage bufferedImage, bufferedImage1, bufferedImage2;
boolean flip = false;
ShowPanel() {
setBackground(Color.white);
setSize(450, 400);
Image image = getToolkit().getImage("image4.jpg");
MediaTracker mediaTracker = new MediaTracker(this);
mediaTracker.addImage(image, 1);
try {
mediaTracker.waitForAll();
} catch (Exception e) {}
bufferedImage1 = new BufferedImage(image.getWidth(this),
image.getHeight(this),BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = bufferedImage1.createGraphics();
g2d.drawImage(image, 0, 0, this);
bufferedImage = bufferedImage1;
}
public void flipImage() {
bufferedImage2 = new BufferedImage(bufferedImage1.getWidth(),
bufferedImage1.getHeight(), bufferedImage1.getType());
DataBuffer buffer1 = bufferedImage1.getRaster().getDataBuffer();
DataBuffer buffer2 = bufferedImage2.getRaster().getDataBuffer();
for (int i = buffer1.getSize() - 1, j = 0; i >= 0; --i, j++) {
buffer2.setElem(j, buffer1.getElem(i));
}
}
public void paintComponent(Graphics g) {
Graphics2D g2D = (Graphics2D) g;
g2D.drawImage(bufferedImage, 0, 0, this);
}
}
- Attachments
-
- before flip
- flip1.gif (13.25 KiB) Viewed 10201 times
-
- after flip
- flip2.gif (13.09 KiB) Viewed 10197 times
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