GirdBagLayout -> How to make the buttons fill vertically

[Karl]

Here comes a simple example,
and I do not know how to make the JToggleButtons
use all the vertical space.
Can anybody help me?

Code: Select all

package Swing.Designer.Forum.com;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.Box;
import javax.swing.BoxLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToggleButton;

public class FillVertically extends JFrame {

   /**
    * Launch the application
    * @param args
    */
   public static void main(String args[]) {
      EventQueue.invokeLater(new Runnable() {
         public void run() {
            try {
               FillVertically frame = new FillVertically();
               frame.setVisible(true);
            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      });
   }

   /**
    * Create the frame
    */
   public FillVertically() {
      super();
      setBounds(100, 100, 500, 375);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      final JPanel panel = new JPanel();
      panel.setLayout(new BorderLayout());
      getContentPane().add(panel);

      final JPanel panel_2 = new JPanel();
      panel_2.setPreferredSize(new Dimension(0, 55));
      panel.add(panel_2, BorderLayout.NORTH);

      final JPanel panel_1 = new JPanel();
      panel_1.setLayout(new BoxLayout(panel_1, BoxLayout.X_AXIS));
      panel.add(panel_1);

      final Component component = Box.createRigidArea(new Dimension(24, 0));
      panel_1.add(component);

      final JPanel panel_4 = new JPanel();
      panel_4.setLayout(new GridBagLayout());
      panel_1.add(panel_4);

      final JToggleButton toggleButton = new JToggleButton();
      toggleButton.setText("New JToggleButton");
      final GridBagConstraints gridBagConstraints = new GridBagConstraints();
      gridBagConstraints.fill = GridBagConstraints.VERTICAL;
      panel_4.add(toggleButton, gridBagConstraints);

      final JToggleButton toggleButton_1 = new JToggleButton();
      final GridBagConstraints gridBagConstraints_1 = new GridBagConstraints();
      gridBagConstraints_1.fill = GridBagConstraints.VERTICAL;
      panel_4.add(toggleButton_1, gridBagConstraints_1);
      toggleButton_1.setText("New JToggleButton");

      final JToggleButton toggleButton_2 = new JToggleButton();
      toggleButton_2.setText("New JToggleButton");
      final GridBagConstraints gridBagConstraints_2 = new GridBagConstraints();
      gridBagConstraints_2.fill = GridBagConstraints.VERTICAL;
      panel_4.add(toggleButton_2, gridBagConstraints_2);

      final Component component_1 = Box.createRigidArea(new Dimension(24, 0));
      panel_1.add(component_1);

      final JPanel panel_3 = new JPanel();
      panel_3.setPreferredSize(new Dimension(0, 80));
      panel.add(panel_3, BorderLayout.SOUTH);
      //
   }

}

[Eric Clayberg]

You can set the rowWeight of that row to 1.0 or you can set the weightY of the buttons to 1.0. For example,

Code: Select all

      GridBagLayout gridBagLayout = new GridBagLayout();
      gridBagLayout.rowWeights = new double[]{1.0};
      panel_4.setLayout(gridBagLayout);

or...

Code: Select all

      gridBagConstraints.weighty = 1.0;