Java Swing - 使用LayeredPane實現佈局

Question

我有關於製作特定佈局的問題，首先我會展示示例，然後添加一些額外的說明。

佈局，當朋友和消息都是關閉的：

佈局，當朋友和消息被打開：

我打算讓這個佈局的Java Swing。

我的意圖是首先將幀分成三個區域，頂層菜單行，主面板和底層菜單行。 我正在考慮爲這部分使用BorderLayout。

然後朋友和消息按鈕應該是切換按鈕的，並且在切換時它們應該在主面板（或其他任何地方）上顯示疊加層，其包含朋友列表和消息區域。我意識到我需要爲此使用LayeredPane。

另一個重要的部分是佈局應該可以以任何大小進行查看，也就是說用戶可以調整應用程序的大小，並且可以在不同的分辨率下使用，所以我並不需要固定寬度的任何東西和身高。

但是我真的失去了如何結合這個，所以我請你的幫助。

希望我已經解釋了足夠的情況。

問候。

Answer 1

這可能是大約覆蓋，因爲JPanel中可以包含其他JComponents

• 使用JLayer（Java7）的基礎上JXLayer（的Java6），

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

• 最簡單可以使用JDialog（undecorated）放置到Point（setLocation（int，int）），setVisible（）必須包裝成invokeLater

Answer 2

我將使用gridBagLayout。

下面是小例子包括按鈕，隱藏自己的黃色面板：

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(); 
      } 
     }); 
    } 
}