Before you come with GridBagLayout suggestions, I've tried that but I couldn't get it to work. I want a frame with the size 800 x 800 and with a center panel of 600x600. Right now, when I run it the center panel is 600x578. Can someone tell me where it goes wrong? It's just 22 pixels.
public void createPlayground()
{
JFrame frame = new JFrame("ForFun Maze");
frame.setSize(WIDTH, HEIGHT);
frame.setResizable(false);
frame.setLayout(new BorderLayout());
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(3,1));
buttonPanel.setPreferredSize(new Dimension(100,600));
buttonPanel.setMaximumSize(new Dimension(100,600));
buttonPanel.setBackground(SIDEBAR);
JButton reset = new JButton();
reset.setText("Reset");
reset.addActionListener(new RestartListener());
reset.setSize(100,180);
JButton pause = new JButton();
pause.setText("Pause");
pause.setSize(100,180);
pause.addActionListener(new PauseListener());
JButton quit = new JButton();
quit.setText("Quit");
quit.setSize(100,180);
quit.addActionListener(new QuitListener());
buttonPanel.add(pause);
buttonPanel.add(reset);
buttonPanel.add(quit);
Location[][] array = null;
if(level == 1)
{
array = glevel1;
}
CenterPanel centerPanel = new CenterPanel(array);
centerPanel.setPreferredSize(new Dimension(600,600));
centerPanel.setMinimumSize(new Dimension(600,600));
centerPanel.setBackground(BACKGROUND);
JPanel leftPanel = new JPanel();
leftPanel.setBackground(SIDEBAR);
leftPanel.setPreferredSize(new Dimension(100,600));
JPanel northPanel = new JPanel();
northPanel.setBackground(SIDEBAR);
northPanel.setPreferredSize(new Dimension(800,100));
JPanel bottomPanel = new JPanel();
bottomPanel.setBackground(SIDEBAR);
bottomPanel.setPreferredSize(new Dimension(800,100));
frame.add(northPanel, BorderLayout.NORTH);
frame.add(leftPanel, BorderLayout.WEST);
frame.add(centerPanel, BorderLayout.CENTER);
frame.add(buttonPanel, BorderLayout.EAST);
frame.add(bottomPanel, BorderLayout.SOUTH);
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation(dim.width / 2 - frame.getSize().width / 2, dim.height / 2 - frame.getSize().height / 2);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
System.out.println("Size of centerpane"+centerPanel.getWidth()+"x"+centerPanel.getHeight());
}
pack()
over setSize()
(because you don't take the JFrame insets
into accountsetLocationRelativeTo(null)
(after calling pack()
) to center the frame.setSize()
on JComponent
's are useless because the LayoutManager
's will override them (same goes for setBounds
and setLocation
).import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.xml.stream.Location;
public class Example {
public void createPlayground() {
JFrame frame = new JFrame("ForFun Maze");
frame.setResizable(false);
frame.setLayout(new BorderLayout());
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(3, 1));
buttonPanel.setPreferredSize(new Dimension(100, 600));
buttonPanel.setMaximumSize(new Dimension(100, 600));
JButton reset = new JButton();
reset.setText("Reset");
reset.setSize(100, 180);
JButton pause = new JButton();
pause.setText("Pause");
pause.setSize(100, 180);
JButton quit = new JButton();
quit.setText("Quit");
quit.setSize(100, 180);
buttonPanel.add(pause);
buttonPanel.add(reset);
buttonPanel.add(quit);
Location[][] array = null;
JPanel centerPanel = new JPanel();
centerPanel.setPreferredSize(new Dimension(600, 600));
centerPanel.setMinimumSize(new Dimension(600, 600));
JPanel leftPanel = new JPanel();
leftPanel.setPreferredSize(new Dimension(100, 600));
JPanel northPanel = new JPanel();
northPanel.setPreferredSize(new Dimension(800, 100));
JPanel bottomPanel = new JPanel();
bottomPanel.setPreferredSize(new Dimension(800, 100));
frame.add(northPanel, BorderLayout.NORTH);
frame.add(leftPanel, BorderLayout.WEST);
frame.add(centerPanel, BorderLayout.CENTER);
frame.add(buttonPanel, BorderLayout.EAST);
frame.add(bottomPanel, BorderLayout.SOUTH);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
System.out.println("Size of centerpane" + centerPanel.getWidth() + "x" + centerPanel.getHeight());
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Example().createPlayground();
}
});
}
}