How to add a shortcut to extra space on a tab
I am trying to add JLabel
in white space JTabbedPane
(to the right of the tabs and above the content pane).
I got very close with this SSCCE (using MigLayout
):
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
JFrame frame = new JFrame();
frame.setLayout(new MigLayout(new LC().fill().insetsAll("0")));
JTabbedPane jtp = new JTabbedPane();
jtp.add(new JPanel(), "Tab 1");
jtp.add(new JPanel(), "Tab 2");
JLabel label = new JLabel("label");
JPanel panel = new JPanel(new MigLayout(new LC().fill()));
panel.add(jtp, "id tabbedpane, grow, span");
panel.add(label, "pos (tabbedpane.w-label.w) 10, id label");
label.setBounds(100, 100, 10, 10);
frame.add(panel, "grow, span");
frame.setSize(500, 500);
frame.setLocationRelativeTo(null); // Sorry, Andrew Thompson
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
But unfortunately this SSCCE gets caught in an error MigLayout
(read: MigLayout error: "Unstable circular dependency in absolute bound values!" Etc.). If you remove the code WindowsLookAndFeel
it gives this:
This is exactly what I want, except that it is missing WindowsLookAndFeel
(which is a requirement for my application, MigLayout
is not). I cannot figure out how to do this without MigLayout
.
How would you add JLabel
white space to this?
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1 answer
You can try OverlayLayout:
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
public class TabbedPaneWithComponent
{
private static void createAndShowUI()
{
JPanel panel = new JPanel();
panel.setLayout( new OverlayLayout(panel) );
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.add("1", new JTextField("one"));
tabbedPane.add("2", new JTextField("two"));
tabbedPane.setAlignmentX(1.0f);
tabbedPane.setAlignmentY(0.0f);
JCheckBox checkBox = new JCheckBox("Check Me");
checkBox.setOpaque( false );
checkBox.setAlignmentX(1.0f);
checkBox.setAlignmentY(0.0f);
panel.add( checkBox );
panel.add(tabbedPane);
JFrame frame = new JFrame("TabbedPane With Component");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add( panel );
frame.setLocationByPlatform( true );
frame.setSize(400, 100);
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowUI();
}
});
}
}
Edit:
Here's a little test program I put together to learn how a layout based on X / Y alignments works:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class OverlayLayoutTest extends JPanel
implements ActionListener
{
JPanel green;
JPanel red;
JLabel greenLabel;
JLabel redLabel;
JComboBox greenAlignmentX;
JComboBox greenAlignmentY;
JComboBox redAlignmentX;
JComboBox redAlignmentY;
public OverlayLayoutTest()
{
setLayout( new BorderLayout(10, 10) );
add(createNorthPanel(), BorderLayout.NORTH);
add(createCenterPanel(), BorderLayout.CENTER);
add(createSouthPanel(), BorderLayout.SOUTH);
}
private JPanel createNorthPanel()
{
JPanel panel = new JPanel();
panel.add( new JLabel("Green:") );
greenLabel = new JLabel();
panel.add( greenLabel );
panel.add( new JLabel("Red:") );
redLabel = new JLabel();
panel.add( redLabel );
return panel;
}
private JPanel createCenterPanel()
{
JPanel panel = new JPanel();
panel.setLayout( new OverlayLayout(panel) );
panel.setBackground( Color.ORANGE );
panel.setPreferredSize( new Dimension(200, 200) );
red = new JPanel();
red.setBackground( Color.RED );
red.setPreferredSize( new Dimension(50, 50) );
red.setMaximumSize( red.getPreferredSize() );
red.setMinimumSize( red.getPreferredSize() );
panel.add( red );
green = new JPanel();
green.setBackground( Color.GREEN );
green.setPreferredSize( new Dimension(100, 100) );
green.setMaximumSize( green.getPreferredSize() );
green.setMinimumSize( green.getPreferredSize() );
panel.add( green );
JPanel wrap = new JPanel();
wrap.add( panel );
return wrap;
}
private JPanel createSouthPanel()
{
JPanel panel = new JPanel( new GridLayout(1, 0, 10, 10) );
JPanel green = new JPanel(new GridLayout(0, 2, 5, 5) );
green.setBorder( new TitledBorder("Green Alignment") );
green.add( new JLabel("X Alignment:") );
greenAlignmentX = createComboBox();
green.add( greenAlignmentX );
green.add( new JLabel("Y Alignment:") );
greenAlignmentY = createComboBox();
green.add( greenAlignmentY );
panel.add( green );
JPanel red = new JPanel(new GridLayout(0, 2, 5, 5) );
red.setBorder( new TitledBorder("Red Alignment") );
red.add( new JLabel("X Alignment:") );
redAlignmentX = createComboBox();
red.add( redAlignmentX );
red.add( new JLabel("Y Alignment:") );
redAlignmentY = createComboBox();
red.add( redAlignmentY );
panel.add( red );
JButton reset = new JButton("Reset Alignment");
reset.addActionListener( this );
panel.add( reset );
return panel;
}
public void actionPerformed(ActionEvent e)
{
green.setAlignmentX( ((Float)greenAlignmentX.getSelectedItem()) );
green.setAlignmentY( ((Float)greenAlignmentY.getSelectedItem()) );
red.setAlignmentX( ((Float)redAlignmentX.getSelectedItem()) );
red.setAlignmentY( ((Float)redAlignmentY.getSelectedItem()) );
JPanel parent = (JPanel)green.getParent();
parent.revalidate();
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
greenLabel.setText( green.getLocation().toString() );
redLabel.setText( red.getLocation().toString() );
}
});
}
private JComboBox createComboBox()
{
JComboBox<Float> comboBox = new JComboBox<Float>();
comboBox.addItem( new Float(0f) );
comboBox.addItem( new Float(0.25f) );
comboBox.addItem( new Float(0.5f) );
comboBox.addItem( new Float(0.75f) );
comboBox.addItem( new Float(1.0f) );
comboBox.setSelectedItem(0.5f);
return comboBox;
}
private static void createAndShowUI()
{
JFrame frame = new JFrame("OverlayLayoutTest");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add( new OverlayLayoutTest() );
frame.pack();
frame.setLocationByPlatform( true );
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowUI();
}
});
}
}
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