CODEWITHSUNDEEP
javaswinglayoutlayout-managerborder-layout
user1761818
user1761818

Reputation: 375

Which layout to use?

I want to make with swing this interface:

enter image description here

And when I resise it I want all the subpanels and buttons to be resized like this: enter image description here

Not only main window to be resized. I am using GridBagLayout. And I dont know how to stick the borders of the panel with GridBagLayout to the borders of the Frame in that way, when I am resizing the frame the panel also to be resized.

Upvotes: 3

Views: 165

Answers (2)

nIcE cOw
nIcE cOw

Reputation: 24626

The property to achieve this, i.e. when JFrame is resized the JPanel should also resize itself, will be GridBagConstraints.BOTH. It appears to me that your Left JButton is a bit smaller than the Right JButton. If you really wanted to achieve this with GridBagLayout, here I have crafted a small sample code for your help, have a look and ask any question that may arise : 

import java.awt.*;
import javax.swing.*;

public class GridBagExample
{
    private JPanel contentPane;

    private void displayGUI()
    {
        JFrame frame = new JFrame("GridBag Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        contentPane = new JPanel();
        contentPane.setLayout(new GridBagLayout());

        JPanel centerPanel = new JPanel();
        centerPanel.setOpaque(true);
        centerPanel.setBackground(Color.CYAN);

        GridBagConstraints gbc = new GridBagConstraints();
        gbc.anchor = GridBagConstraints.FIRST_LINE_START;
        gbc.weightx = 1.0;
        gbc.weighty = 0.9;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 2;
        gbc.fill = GridBagConstraints.BOTH;  // appears to me this is what you wanted

        contentPane.add(centerPanel, gbc);

        JButton leftButton = new JButton("Left");
        JButton rightButton = new JButton("Right");
        gbc.gridwidth = 1;
        gbc.gridy = 1;
        gbc.weightx = 0.3;
        gbc.weighty = 0.1;

        contentPane.add(leftButton, gbc);

        gbc.gridx = 1;
        gbc.weightx = 0.7;
        gbc.weighty = 0.1;

        contentPane.add(rightButton, gbc);

        frame.setContentPane(contentPane);
        frame.pack();
        frame.setLocationByPlatform(true);
        frame.setVisible(true);
    }

    public static void main(String... args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                new GridBagExample().displayGUI();
            }
        });
    }
}

GRIDBAGEXAMPLE OUTPUT :

Upvotes: 3

Redandwhite
Redandwhite

Reputation: 2549

I normally use nested layouts for this.

  • Use a JPanel with a BorderLayout as the base.
  • Store your central components in a JPanel, and add this to the CENTER of the BorderLayout.
  • Store your bottom components in two separate JPanels.
  • Create another JPanel with a GridLayout of 1 row and 2 columns.
  • Add the two JPanels to it in the correct order.
  • Add this JPanel to the SOUTH of the BorderLayout.

Upvotes: 9

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