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LayeredPane Layout
/*
* 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.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Transparency;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JLayeredPane;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URL;
import javax.swing.Box;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
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 <romain.guy@mac.com>
*/
public class LayeredPaneLayout extends JFrame {
private JLayeredPane layeredPane;
private Loupe loupe;
public LayeredPaneLayout() {
super("Layered Pane Layout");
layeredPane = new JLayeredPane();
addLayersControl();
loadImagesInLayers();
createLoupe();
setSize(540, 350);
setLocationRelativeTo(null);
setResizable(false);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new LayeredPaneLayout().setVisible(true);
}
});
}
private void loadImagesInLayers() {
layeredPane.setLayout(new FlowLayout());
for (int i = 2; i <= 5; i++) {
String name = "photo" + i + ".jpg";
URL url = getClass().getResource(name);
Icon icon = new ImageIcon(url);
JLabel label = new JLabel(icon);
layeredPane.add(label,
(Integer) (JLayeredPane.DEFAULT_LAYER + (i - 1) * 2));
}
add(layeredPane);
}
private void addLayersControl() {
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEADING));
JComboBox layerSelection = new JComboBox(new String[] {
"Layer 0", "Layer 1", "Layer 2", "Layer 3", "Layer 4"
});
layerSelection.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
JComboBox layerSelection = (JComboBox) actionEvent.getSource();
int layerId = layerSelection.getSelectedIndex();
layeredPane.setLayer(loupe,
(Integer) (JLayeredPane.DEFAULT_LAYER + layerId * 2 + 1));
}
});
panel.add(new JLabel("Loupe Layer: "));
panel.add(layerSelection);
JSlider zoomSelection = new JSlider(1, 16, 2);
zoomSelection.setPaintTicks(true);
zoomSelection.setSnapToTicks(true);
zoomSelection.setPaintLabels(true);
zoomSelection.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent changeEvent) {
JSlider zoomSelection = (JSlider) changeEvent.getSource();
loupe.setZoomLevel(zoomSelection.getValue());
}
});
panel.add(Box.createHorizontalStrut(24));
panel.add(new JLabel("Zoom: "));
panel.add(new JLabel("1"));
panel.add(zoomSelection);
panel.add(new JLabel("16"));
add(panel, BorderLayout.NORTH);
}
private void createLoupe() {
loupe = new Loupe(layeredPane);
Dimension size = loupe.getPreferredSize();
layeredPane.add(loupe,
(Integer) (JLayeredPane.DEFAULT_LAYER + 1));
}
}
/*
* 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.
*/
/**
*
* @author Romain Guy <romain.guy@mac.com>
*/
class Loupe extends JComponent {
private BufferedImage loupeImage;
private Point loupeLocation = new Point(0, 0);
private JLayeredPane layeredPane;
private BufferedImage buffer;
private int zoomLevel = 2;
public Loupe(JLayeredPane layeredPane) {
this.layeredPane = layeredPane;
loadImages();
layeredPane.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseMoved(MouseEvent mouseEvent) {
Point location = mouseEvent.getPoint();
location.translate(-getWidth() / 2, -getHeight() / 2);
setLocation(location);
}
});
addComponentListener(new ComponentListener() {
public void componentHidden(ComponentEvent componentEvent) {
resetBuffer();
}
public void componentMoved(ComponentEvent componentEvent) {
}
public void componentResized(ComponentEvent componentEvent) {
resetBuffer();
}
public void componentShown(ComponentEvent componentEvent) {
}
});
}
public int getZoomLevel() {
return this.zoomLevel;
}
public void setZoomLevel(int zoom) {
if (zoom < 1) {
zoom = 1;
}
int oldZoom = this.zoomLevel;
this.zoomLevel = zoom;
firePropertyChange("zoomLevel", oldZoom, this.zoomLevel);
repaint();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(loupeImage.getWidth(),
loupeImage.getHeight());
}
public void resetBuffer() {
buffer = null;
}
private void loadImages() {
try {
loupeImage = ImageIO.read(getClass().getResource("loupe.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
@Override
protected void paintComponent(Graphics g) {
if (buffer == null) {
buffer = createBuffer();
}
Graphics2D g2 = buffer.createGraphics();
g2.setComposite(AlphaComposite.Clear);
g2.fillRect(0, 0, buffer.getWidth(), buffer.getHeight());
g2.setComposite(AlphaComposite.Src);
Point location = getLocation();
location.translate(getWidth() / 2, getHeight() / 2);
int myLayer = layeredPane.getLayer(this);
for (int i = myLayer - 1; i >= 2; i -= 2) {
Component[] components = layeredPane.getComponentsInLayer(i);
for (Component c : components) {
if (c.getBounds().contains(location)) {
g2.translate(c.getX(), c.getY());
c.paint(g2);
g2.translate(-c.getX(), -c.getY());
}
}
}
g2.dispose();
if (zoomLevel > 1) {
((Graphics2D) g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
Shape clip = g.getClip();
Area newClip = new Area(clip);
newClip.intersect(new Area(new Ellipse2D.Double(6.0, 6.0, 138.0, 138.0)));
g.setClip(newClip);
g.drawImage(buffer,
(int) (-getX() * zoomLevel - getWidth() * 0.5 * (zoomLevel - 1)),
(int) (-getY() * zoomLevel - getHeight() * 0.5 * (zoomLevel - 1)),
buffer.getWidth() * zoomLevel,
buffer.getHeight() * zoomLevel, null);
g.setClip(clip);
}
g.drawImage(loupeImage, 0, 0, null);
}
private BufferedImage createBuffer() {
GraphicsEnvironment local = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice device = local.getDefaultScreenDevice();
GraphicsConfiguration config = device.getDefaultConfiguration();
Container parent = getParent();
return config.createCompatibleImage(parent.getWidth(), parent.getHeight(),
Transparency.TRANSLUCENT);
}
}
