Hi people,
Basically I have one JFrame with a few controls on it, at some point I want to set the frame's glassPane to a JPanel with some opacity, this means I want to be able to see the controls beneath it.
I have searched but I could not find anything that made me happy ;)
I am not used to work with swing since I am mainly a web developer, so sorry if this is of an easy answer.
Many Thanks,
MeTitus
This example should give you some ideas:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;
public class DisabledGlassPane extends JComponent
implements KeyListener
{
private final static Color DEFAULT_BACKGROUND = new Color(128, 128, 128, 128);
private final static Border MESSAGE_BORDER = new EmptyBorder(10, 10, 10, 10);
private JLabel message = new JLabel();
public DisabledGlassPane()
{
setOpaque( false );
setBackground( DEFAULT_BACKGROUND );
setLayout( new GridBagLayout() );
add(message, new GridBagConstraints());
message.setOpaque(true);
message.setBorder(MESSAGE_BORDER);
// Disable Mouse, Key and Focus events for the glass pane
addMouseListener( new MouseAdapter() {} );
addMouseMotionListener( new MouseMotionAdapter() {} );
addKeyListener( this );
setFocusTraversalKeys(
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET );
setFocusTraversalKeys(
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, Collections.EMPTY_SET );
}
protected void paintComponent(Graphics g)
{
g.setColor( getBackground() );
g.fillRect(0, 0, getSize().width, getSize().height);
}
public void setBackground(Color background)
{
super.setBackground( background );
Color messageBackground =
new Color(background.getRed(),
background.getGreen(), background.getBlue());
message.setBackground( messageBackground );
}
public void keyPressed(KeyEvent e)
{
e.consume();
}
public void keyTyped(KeyEvent e) {}
public void keyReleased(KeyEvent e)
{
e.consume();
}
public void activate(String text)
{
if (text != null && text.length() > 0)
{
message.setVisible( true );
message.setText( text );
message.setForeground( getForeground() );
}
else
message.setVisible( false );
setVisible( true );
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
requestFocusInWindow();
}
public void deactivate()
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
setCursor(null);
setVisible( false );
}
});
}
public static void main(String[] args)
{
final DisabledGlassPane glassPane = new DisabledGlassPane();
glassPane.setBackground( new Color(255, 128, 128, 128) );
glassPane.setForeground( Color.WHITE );
final JTextField textField = new JTextField();
final JButton button = new JButton( "Click Me" );
button.setMnemonic('c');
button.addActionListener( new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
glassPane.activate("Please Wait...");
Thread thread = new Thread()
{
public void run()
{
try { this.sleep(5000); }
catch (InterruptedException ie) {}
glassPane.deactivate();
}
};
thread.start();
}
});
JFrame frame = new JFrame();
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame.setGlassPane( glassPane );
frame.getContentPane().add(new JLabel("NORTH"), BorderLayout.NORTH );
frame.getContentPane().add( button );
//frame.getContentPane().add(new JTextField(), BorderLayout.SOUTH);
frame.getContentPane().add(textField, BorderLayout.SOUTH);
frame.setSize(300, 300);
frame.setLocationRelativeTo( null );
frame.setVisible(true);
}
}