Java Swing - 使用LayeredPane实现布局

Question

我有关于制作特定布局的问题，首先我会展示示例，然后添加一些额外的说明。

布局，当朋友和消息都是关闭的：

布局，当朋友和消息被打开：

我打算让这个布局的Java Swing。

我的意图是首先将帧分成三个区域，顶层菜单行，主面板和底层菜单行。 我正在考虑为这部分使用BorderLayout。

然后朋友和消息按钮应该是切换按钮的，并且在切换时它们应该在主面板（或其他任何地方）上显示叠加层，其包含朋友列表和消息区域。我意识到我需要为此使用LayeredPane。

另一个重要的部分是布局应该可以以任何大小进行查看，也就是说用户可以调整应用程序的大小，并且可以在不同的分辨率下使用，所以我并不需要固定宽度的任何东西和身高。

但是我真的失去了如何结合这个，所以我请你的帮助。

希望我已经解释了足够的情况。

问候。

Answer 1

这可能是大约覆盖，因为JPanel中可以包含其他JComponents

• 使用JLayer（Java7）的基础上JXLayer（的Java6），

• 使用玻璃面板与JComponents layed to rellative to....

• 最简单可以使用JDialog（undecorated）放置到Point（setLocation（int，int）），setVisible（）必须包装成invokeLater

Answer 2

我将使用gridBagLayout。

下面是小例子包括按钮，隐藏自己的黄色面板：

package Core; 

import java.awt.Color; 
import java.awt.Container; 
import java.awt.Dimension; 
import java.awt.GridBagConstraints; 
import java.awt.GridBagLayout; 
import java.awt.Panel; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 

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

public class GridBagLayoutDemo { 

    public static void addComponentsToPane(Container pane) { 
     pane.setLayout(new GridBagLayout()); 

     add1row(pane); 
     addmainRow(pane); 
     addLastRow(pane); 
    } 

    private static void addLastRow(Container pane) { 
     GridBagConstraints c = new GridBagConstraints(); 
     c.fill = GridBagConstraints.HORIZONTAL; 
     c.gridx = 0; 
     c.gridy = 3; 
     c.anchor = GridBagConstraints.PAGE_END; 
     JPanel bottonPanel = new JPanel(); 
     bottonPanel.setBackground(Color.BLUE); 
     bottonPanel.setLayout(new GridBagLayout()); 
     pane.add(bottonPanel, c); 

     JPanel messagePanel = new JPanel(); 
     messagePanel.setBackground(Color.GRAY); 
     messagePanel.add(new JLabel("MESSAGES")); 
     c.fill = GridBagConstraints.VERTICAL; 
     c.anchor = GridBagConstraints.LINE_END; 
     c.gridx = 0; 
     c.gridy = 0; 
     c.weightx = 1; 
     bottonPanel.add(messagePanel, c); 
    } 

    private static void addmainRow(Container pane) { 
     GridBagConstraints c = new GridBagConstraints(); 
     c.fill = GridBagConstraints.BOTH; 
     c.gridx = 0; 
     c.gridy = 1; 
     c.weightx = 1; 
     c.weighty = 1; 
     c.anchor = GridBagConstraints.CENTER; 
     JPanel mainManel = new JPanel(); 
     mainManel.setBackground(Color.GREEN); 
     mainManel.setLayout(new GridBagLayout()); 
     pane.add(mainManel, c); 

     final JPanel friendListPanel = new JPanel(); 
     friendListPanel.setBackground(Color.YELLOW); 
     friendListPanel.add(new JLabel("FRIEND LIST")); 
     c.fill = GridBagConstraints.NONE; 
     c.gridx = 0; 
     c.gridy = 0; 
     c.weightx = 1; 
     c.weighty = 1; 
     c.anchor = GridBagConstraints.FIRST_LINE_END; 
     mainManel.add(friendListPanel, c); 

     c.fill = GridBagConstraints.NONE; 
     c.gridx = 0; 
     c.gridy = 1; 
     c.weightx = 0; 
     c.weighty = 0; 
     c.anchor = GridBagConstraints.CENTER; 
     JButton button = new JButton("On/Off"); 
     mainManel.add(button, c); 

     final JPanel messageAreaPanel = new JPanel(); 
     messageAreaPanel.setBackground(Color.YELLOW); 
     messageAreaPanel.add(new JLabel("MESSAGE PANEL")); 
     c.fill = GridBagConstraints.NONE; 
     c.gridx = 0; 
     c.gridy = 2; 
     c.weightx = 1; 
     c.weighty = 1; 
     c.anchor = GridBagConstraints.LAST_LINE_END; 
     mainManel.add(messageAreaPanel, c); 

     button.addActionListener(new ActionListener() { 
      @Override 
      public void actionPerformed(ActionEvent e) { 
       friendListPanel.setVisible(!friendListPanel.isVisible()); 
       messageAreaPanel.setVisible(!messageAreaPanel.isVisible()); 
      } 
     }); 

    } 

    private static void add1row(Container pane) { 
     GridBagConstraints c = new GridBagConstraints(); 
     c.fill = GridBagConstraints.HORIZONTAL; 
     c.gridx = 0; 
     c.gridy = 0; 
     c.anchor = GridBagConstraints.PAGE_START; 
     Panel headerPanel = new Panel(); 
     headerPanel.setLayout(new GridBagLayout()); 
     headerPanel.setBackground(Color.BLUE); 
     pane.add(headerPanel, c); 

     JPanel quitPanel = new JPanel(); 
     quitPanel.setBackground(Color.GRAY); 
     quitPanel.add(new JLabel("QUIT")); 
     c.fill = GridBagConstraints.VERTICAL; 
     c.anchor = GridBagConstraints.LINE_START; 
     c.gridx = 0; 
     c.gridy = 0; 
     c.weightx = 1; 
     headerPanel.add(quitPanel, c); 

     JPanel friendsPanel = new JPanel(); 
     friendsPanel.setBackground(Color.GRAY); 
     friendsPanel.add(new JLabel("FRIENDS")); 
     c.fill = GridBagConstraints.VERTICAL; 
     c.anchor = GridBagConstraints.LINE_END; 
     c.gridx = 1; 
     c.gridy = 0; 
     headerPanel.add(friendsPanel, c); 
    } 

    private static void createAndShowGUI() { 
     JFrame frame = new JFrame("GridBagLayoutDemo"); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

     addComponentsToPane(frame); 
     // uncoment to use full screen 
     // frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH); 
     frame.setSize(new Dimension(400, 400)); 
     frame.setVisible(true); 
    } 

    public static void main(String[] args) { 
     javax.swing.SwingUtilities.invokeLater(new Runnable() { 
      public void run() { 
       createAndShowGUI(); 
      } 
     }); 
    } 
}