/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "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 UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.util.prefs.ui;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.MouseEvent;
import javax.swing.event.MouseInputAdapter;
/** A 1.4 application that requires no other files. */
public class GlassPaneDemo {
static private MyGlassPane myGlassPane;
static private boolean state = false;
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
//JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("GlassPaneDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Start creating and adding components.
//JCheckBox changeButton =
// new JCheckBox("Glass pane \"visible\"");
// changeButton.setSelected(false);
//Set up the content pane, where the "main GUI" lives.
Container contentPane = frame.getContentPane();
contentPane.setLayout(new FlowLayout());
// contentPane.add(changeButton);
JButton butt = new JButton("Button 1");
contentPane.add(butt);
butt.addMouseListener( new MouseInputAdapter() {
//public void mousePressed(MouseEvent e) { myGlassPane.setVisible( true); System.out.println("on");}
public void mousePressed(MouseEvent e) {
state = !state;
myGlassPane.setVisible( state);
System.out.println("state "+state);
}
public void mouseDragged(MouseEvent e) { myGlassPane.setVisible( false); System.out.println("drag");}
});
//Set up the menu bar, which appears above the content pane.
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Menu");
menu.add(new JMenuItem("Do nothing"));
menuBar.add(menu);
frame.setJMenuBar(menuBar);
//Set up the glass pane, which appears over both menu bar
//and content pane and is an item listener on the change
//button.
myGlassPane = new MyGlassPane(butt, menuBar, frame.getContentPane());
// changeButton.addItemListener(myGlassPane);
frame.setGlassPane(myGlassPane);
//Show 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();
}
});
}
}
/**
* We have to provide our own glass pane so that it can paint.
*/
class MyGlassPane extends JComponent {
Point point;
//React to change button clicks.
public void itemStateChanged(ItemEvent e) {
setVisible(e.getStateChange() == ItemEvent.SELECTED);
}
protected void paintComponent(Graphics g) {
if (point != null) {
g.setColor(Color.red);
g.fillOval(point.x - 10, point.y - 10, 20, 20);
}
}
public void setPoint(Point p) {
point = p;
}
public MyGlassPane(AbstractButton aButton,
JMenuBar menuBar,
Container contentPane) {
CBListener listener = new CBListener(aButton, menuBar,
this, contentPane);
addMouseListener(listener);
addMouseMotionListener(listener);
}
}
/**
* Listen for all events that our check box is likely to be
* interested in. Redispatch them to the check box.
*/
class CBListener extends MouseInputAdapter {
Toolkit toolkit;
Component liveButton;
JMenuBar menuBar;
MyGlassPane glassPane;
Container contentPane;
public CBListener(Component liveButton, JMenuBar menuBar,
MyGlassPane glassPane, Container contentPane) {
toolkit = Toolkit.getDefaultToolkit();
this.liveButton = liveButton;
this.menuBar = menuBar;
this.glassPane = glassPane;
this.contentPane = contentPane;
}
public void mouseMoved(MouseEvent e) {
redispatchMouseEvent(e, false);
}
public void mouseDragged(MouseEvent e) {
redispatchMouseEvent(e, true);
}
public void mouseClicked(MouseEvent e) {
redispatchMouseEvent(e, false);
}
public void mouseEntered(MouseEvent e) {
redispatchMouseEvent(e, false);
}
public void mouseExited(MouseEvent e) {
redispatchMouseEvent(e, false);
}
public void mousePressed(MouseEvent e) {
redispatchMouseEvent(e, false);
}
public void mouseReleased(MouseEvent e) {
redispatchMouseEvent(e, true);
}
//A more finished version of this method would
//handle mouse-dragged events specially.
private void redispatchMouseEvent(MouseEvent e,
boolean repaint) {
Point glassPanePoint = e.getPoint();
Container container = contentPane;
Point containerPoint = SwingUtilities.convertPoint(
glassPane,
glassPanePoint,
contentPane);
System.out.println("event "+containerPoint);
if (containerPoint.y < 0) { //we're not in the content pane
if (containerPoint.y + menuBar.getHeight() >= 0) {
//The mouse event is over the menu bar.
//Could handle specially.
} else {
//The mouse event is over non-system window
//decorations, such as the ones provided by
//the Java look and feel.
//Could handle specially.
}
} else {
//The mouse event is probably over the content pane.
//Find out exactly which component it's over.
Component component =
SwingUtilities.getDeepestComponentAt(
container,
containerPoint.x,
containerPoint.y);
if ((component != null)
&& (component.equals(liveButton))) {
//Forward events over the check box.
Point componentPoint = SwingUtilities.convertPoint(
glassPane,
glassPanePoint,
component);
component.dispatchEvent(new MouseEvent(component,
e.getID(),
e.getWhen(),
e.getModifiers(),
componentPoint.x,
componentPoint.y,
e.getClickCount(),
e.isPopupTrigger()));
}
}
//Update the glass pane if requested.
if (repaint) {
glassPane.setPoint(glassPanePoint);
glassPane.repaint();
}
}
}