如何填充整个Jframe?

时间:2014-03-26 23:02:47

标签: java swing user-interface jframe jpanel

我对Java中的GUI很新。我想知道的是,有没有办法在JPanels中取两个JFrame并将其分开,即。第1组为70%,第2组为30%?

以下是我创建GUI的片段:

import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

import java.awt.Color;
import java.awt.GridLayout;

public class ButtonGrid extends Game
{
private static JFrame frame = new JFrame();

private static JPanel panel1 = new JPanel();
private static JPanel panel2 = new JPanel();
private static JPanel panel3 = new JPanel();
private static JPanel panel4 = new JPanel();

private static JLabel lblP1 = new JLabel("Player 1: ");
private static JLabel lblP2 = new JLabel("Player 2: ");
private static JLabel P1Score = new JLabel("0");
private static JLabel P2Score = new JLabel("0");

public static JButton grid[][];

public ButtonGrid(int width, int length)
{
    frame.setLayout(new GridLayout(width, length));


    panel1.setLayout(new GridLayout(width, length));

    panel2.setLayout(new BoxLayout(panel2, BoxLayout.Y_AXIS));
    panel3.setLayout(new BoxLayout(panel3, BoxLayout.X_AXIS));
    panel4.setLayout(new BoxLayout(panel4, BoxLayout.X_AXIS));

    lblP1.setForeground(Color.blue);
    lblP2.setForeground(Color.red);

    grid = new JButton[width][length];

    for(int x=0; x<length; x++)
    {
        for(int y=0; y<width; y++)
        {
            grid[x][y] = new JButton();
            grid[x][y].addActionListener(actionListener);
            grid[x][y].setName("[" + x + ',' +y + "]");
            //grid[x][y].setText(grid[x][y].getName());
            //frame.add(grid[x][y]);
            panel1.add(grid[x][y]);
        }
    }

    grid[0][0].setBackground(Color.blue);
    grid[width-1][length-1].setBackground(Color.red);

    panel3.add(lblP1);
    panel3.add(P1Score);
    panel4.add(lblP2);
    panel4.add(P2Score);

    panel2.add(panel3);
    panel2.add(panel4);


    frame.add(panel2);
    frame.add(panel1);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(800, 600);
    frame.setVisible(true);
    frame.setResizable(false);

}

我想要的是按钮尺寸均匀并填充到底部,现在框架中有大约2/3的空白空间。如何使用按钮填充框架中剩余的2/3空间?

1 个答案:

答案 0 :(得分:2)

看看GridBagLayout,它允许您指定应该应用于每个组件的权重。

例如......

JPanel top = new JPanel();
top.setBorder(new LineBorder(Color.RED));
JPanel bottom = new JPanel();
bottom .setBorder(new LineBorder(Color.BLUE));

JPanel parent = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weighty = 0.7;
gbc.fill = GridBagConstraints.BOTH;
parent.add(top, gbc);

gbc.gridy++;
gbc.weighty = 0.3;
parent.add(bottom, gbc);

附注:

  • 不要过度使用static,您的代码中不需要任何static引用,因为它们都是private ...
  • 不要在JPanel(或任何其他类型的容器)中创建框架。该组件不应该关心它可能在哪里使用,这是一个外部决定......
  • 使用setResizable将更改可视区域的大小,应在设置窗口大小之前完成。您应该依赖pack而不是setSize,因为这会调整窗口大小,以便尊重内容大小