/*
* Copyright (c) 1995, 2008, Oracle and/or its affiliates. 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 Oracle or 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
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* 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package javademo.swing.pane;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
/*
* LayeredPaneDemo2.java requires
* images/dukeWaveRed.gif.
*/
public class LayeredPaneDemo2 extends JPanel implements ActionListener, MouseMotionListener
{
private static final long serialVersionUID = 1L;
private String[] layerStrings = { "Yellow (0)", "Magenta (1)", "Cyan (2)", "Red (3)", "Green (4)", "Blue (5)" };
private Color[] layerColors = { Color.yellow, Color.magenta, Color.cyan, Color.red, Color.green, Color.blue };
private JLayeredPane layeredPane;
private JLabel dukeLabel;
private JCheckBox onTop;
private JComboBox layerList;
// Action commands
private static String ON_TOP_COMMAND = "ontop";
private static String LAYER_COMMAND = "layer";
public LayeredPaneDemo2()
{
setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
// Create and load the duke icon.
final ImageIcon icon = createImageIcon("images/dukeWaveRed.gif");
// Create and set up the layered pane.
layeredPane = new JLayeredPane();
layeredPane.setPreferredSize(new Dimension(300, 310));
layeredPane.setBorder(BorderFactory.createTitledBorder("Move the Mouse to Move Duke"));
layeredPane.addMouseMotionListener(this);
// Add several labels to the layered pane.
layeredPane.setLayout(new GridLayout(2, 3));
for (int i = 0; i < layerStrings.length; i++)
{
JLabel label = createColoredLabel(layerStrings[i], layerColors[i]);
layeredPane.add(label, new Integer(i));
}
// Create and add the Duke label to the layered pane.
dukeLabel = new JLabel(icon);
if (icon == null)
{
System.err.println("Duke icon not found; using black rectangle instead.");
dukeLabel.setOpaque(true);
dukeLabel.setBackground(Color.BLACK);
}
layeredPane.add(dukeLabel, new Integer(2), 0);
// Add control pane and layered pane to this JPanel.
add(Box.createRigidArea(new Dimension(0, 10)));
add(createControlPanel());
add(Box.createRigidArea(new Dimension(0, 10)));
add(layeredPane);
}
/** Returns an ImageIcon, or null if the path was invalid. */
protected static ImageIcon createImageIcon(String path)
{
java.net.URL imgURL = LayeredPaneDemo2.class.getResource(path);
if (imgURL != null)
{
return new ImageIcon(imgURL);
}
else
{
System.err.println("Couldn't find file: " + path);
return null;
}
}
// Create and set up a colored label.
private JLabel createColoredLabel(String text, Color color)
{
JLabel label = new JLabel(text);
label.setVerticalAlignment(JLabel.TOP);
label.setHorizontalAlignment(JLabel.CENTER);
label.setOpaque(true);
label.setBackground(color);
label.setForeground(Color.black);
label.setBorder(BorderFactory.createLineBorder(Color.black));
label.setPreferredSize(new Dimension(140, 140));
return label;
}
// Create the control pane for the top of the frame.
private JPanel createControlPanel()
{
onTop = new JCheckBox("Top Position in Layer");
onTop.setSelected(true);
onTop.setActionCommand(ON_TOP_COMMAND);
onTop.addActionListener(this);
layerList = new JComboBox(layerStrings);
layerList.setSelectedIndex(2); // cyan layer
layerList.setActionCommand(LAYER_COMMAND);
layerList.addActionListener(this);
JPanel controls = new JPanel();
controls.add(layerList);
controls.add(onTop);
controls.setBorder(BorderFactory.createTitledBorder("Choose Duke's Layer and Position"));
return controls;
}
// Make Duke follow the cursor.
public void mouseMoved(MouseEvent e)
{
dukeLabel.setLocation(e.getX() - dukeLabel.getWidth() / 2, e.getY() - dukeLabel.getHeight() / 2);
}
public void mouseDragged(MouseEvent e)
{
} // do nothing
// Handle user interaction with the check box and combo box.
public void actionPerformed(ActionEvent e)
{
String cmd = e.getActionCommand();
if (ON_TOP_COMMAND.equals(cmd))
{
if (onTop.isSelected())
layeredPane.moveToFront(dukeLabel);
else
layeredPane.moveToBack(dukeLabel);
}
else if (LAYER_COMMAND.equals(cmd))
{
int position = onTop.isSelected() ? 0 : 1;
layeredPane.setLayer(dukeLabel, layerList.getSelectedIndex(), position);
}
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI()
{
// Create and set up the window.
JFrame frame = new JFrame("LayeredPaneDemo2");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
JComponent newContentPane = new LayeredPaneDemo2();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args)
{
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
createAndShowGUI();
}
});
}
}