Composite BufferedImage
/*
* Copyright (c) 2007, Romain Guy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the TimingFramework project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Composite;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
*
* @author Romain Guy
*/
public class SourceInDemo extends JFrame {
private JCheckBox shadow;
public SourceInDemo() {
super("Source In");
add(new ImageViewer(), BorderLayout.CENTER);
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEADING));
panel.add(shadow = new JCheckBox("Drop Shadow"));
shadow.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent changeEvent) {
repaint();
}
});
add(panel, BorderLayout.SOUTH);
setSize(350, 250);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private class ImageViewer extends JComponent {
private BufferedImage image, landscape;
private ImageViewer() {
try {
image = ImageIO.read(getClass().getResource("picture.png"));
landscape = ImageIO.read(getClass().getResource("landscape.jpg"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
@Override
protected void paintComponent(Graphics g) {
BufferedImage temp = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = temp.createGraphics();
if (shadow.isSelected()) {
int x = (getWidth() - image.getWidth()) / 2;
int y = (getHeight() - image.getHeight()) / 2;
g2.drawImage(image, x + 4, y + 10, null);
Composite oldComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_IN, 0.75f));
g2.setColor(Color.BLACK);
g2.fillRect(0, 0, getWidth(), getHeight());
g2.setComposite(oldComposite);
g2.drawImage(image, x, y, null);
} else {
int x = (getWidth() - image.getWidth()) / 2;
int y = (getHeight() - image.getHeight()) / 2;
g2.drawImage(image, x, y, null);
Composite oldComposite = g2.getComposite();
g2.setComposite(AlphaComposite.SrcIn);
x = (getWidth() - landscape.getWidth()) / 2;
y = (getHeight() - landscape.getHeight()) / 2;
g2.drawImage(landscape, x, y, null);
g2.setComposite(oldComposite);
}
g2.dispose();
g.drawImage(temp, 0, 0, null);
}
}
public static void main(String... args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new SourceInDemo().setVisible(true);
}
});
}
}
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