/*
* 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.Component;
import java.awt.Composite;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.lang.reflect.Field;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
*
* @author Romain Guy
*/
public class AlphaCompositesApplication extends JFrame {
private CompositePainter painter;
private JSlider opacity;
private JComboBox composites;
public AlphaCompositesApplication() {
super("Alpha Composites");
add(painter = new CompositePainter(), BorderLayout.CENTER);
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEADING));
panel.add(buildCompositeSelector());
panel.add(buildOpacitySelector());
add(panel, BorderLayout.SOUTH);
setSize(400, 300);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private Component buildOpacitySelector() {
opacity = new JSlider(0, 100, 50);
opacity.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent changeEvent) {
changeComposite();
}
});
JPanel panel = new JPanel();
panel.add(new JLabel("0%"));
panel.add(opacity);
panel.add(new JLabel("100%"));
return panel;
}
private Component buildCompositeSelector() {
composites = new JComboBox(new String[] {
"CLEAR",
"DST", "DST_ATOP", "DST_IN", "DST_OUT", "DST_OVER",
"SRC", "SRC_ATOP", "SRC_IN", "SRC_OUT", "SRC_OVER",
"XOR"
});
composites.setSelectedItem("SRC");
composites.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
changeComposite();
}
});
return composites;
}
private void changeComposite() {
String rule = composites.getSelectedItem().toString();
try {
Field ruleField = AlphaComposite.class.getDeclaredField(rule);
AlphaComposite composite = AlphaComposite.getInstance(ruleField.getInt(null),
(float) opacity.getValue() / 100.0f);
painter.setComposite(composite);
} catch (SecurityException ex) {
ex.printStackTrace();
} catch (NoSuchFieldException ex) {
ex.printStackTrace();
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
} catch (IllegalAccessException ex) {
ex.printStackTrace();
}
}
private final class CompositePainter extends JComponent {
private AlphaComposite composite = AlphaComposite.getInstance(
AlphaComposite.SRC, 0.5f);
@Override
protected void paintComponent(Graphics g) {
BufferedImage image = new BufferedImage(getWidth(), getHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = image.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setColor(Color.BLUE);
g2.fillRect(4 + (getWidth() / 4), 4, getWidth() / 2, getHeight() - 8);
g2.setColor(Color.RED);
g2.setComposite(composite);
g2.fillOval(40, 40, getWidth() - 80, getHeight() - 80);
g2.dispose();
g.drawImage(image, 0, 0, null);
}
private void setComposite(AlphaComposite composite) {
this.composite = composite;
repaint();
}
}
public static void main(String... args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new AlphaCompositesApplication().setVisible(true);
}
});
}
}
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