2

JSplitpane我想在 Java swing中创建类似二维的设计。这样JFrame将被分成4部分，上下部分被另一条分割线分开，左右部分被另一条分割线分开。此外，如果我单击并拖动垂直分割线的任何部分，则整条线应沿拖动方向移动。

截屏

我试图通过在拆分窗格中使用拆分窗格来实现这一点。但是在拖动垂直分割线时，它只会将组件拖动到水平线下方或水平分割线上方。

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

public class Demo extends JFrame {

int screenwidth=760,screenheigth=550;

JSplitPane top_sp,bottom_sp,main_sp;

JButton b1,b2,b3,b4,b5,b6;
JButton b7,b8,b9,b10;

MailClient(){
    setSize(screenwidth,screenheigth);
    setLayout(new BorderLayout());
    setTitle("Demo");
    setDefaultCloseOperation(EXIT_ON_CLOSE);    
    setLocationRelativeTo(null);

    b1=new JButton("B1");
    b2=new JButton("B2");
    b3=new JButton("B3");
    b4=new JButton("B4");
    b5=new JButton("B5");
    b6=new JButton("B6");
    b7=new JButton("B7");
    b8=new JButton("B8");
    b9=new JButton("B9");
    b10=new JButton("B10");     

    JPanel topleft=new JPanel(new FlowLayout());
    topleft.add(b1);
    topleft.add(b2);

    JPanel topright=new JPanel(new FlowLayout(FlowLayout.CENTER));
    topright.add(b3);
    topright.add(b4);
    topright.add(b5);
    topright.add(b6);

    JPanel bottomleft=new JPanel(new FlowLayout(FlowLayout.CENTER));

    bottomleft.add(b7);
    bottomleft.add(b8);
    bottomleft.add(b9);
    bottomleft.add(b10);

    JPanel bottomright=new JPanel(new FlowLayout(FlowLayout.CENTER));
    bottomright.add(new JLabel("TABLE"));

    top_sp=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,topleft,topright);
    bottom_sp=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,bottomleft,bottomright);

    main_sp=new JSplitPane(JSplitPane.VERTICAL_SPLIT,true,top_sp,bottom_sp);

    add(main_sp,"Center");

    setVisible(true);
}

public static void main(String args[]){
    Demo demo=new Demo();

}

}
4

3 回答 3

3

您可以使用属性更改侦听器来检测拆分窗格分隔线何时被移动，然后设置另一个拆分窗格的位置：

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

public class Example extends JFrame {

    public Example() {

        JPanel topLeftPanel = new JPanel();
        JPanel topRightPanel = new JPanel();
        JPanel bottomLeftPanel = new JPanel();
        JPanel bottomRightPanel = new JPanel();

        JSplitPane topPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, topLeftPanel, topRightPanel);

        JSplitPane bottomPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, bottomLeftPanel, bottomRightPanel);

        topPane.addPropertyChangeListener(JSplitPane.DIVIDER_LOCATION_PROPERTY, pce -> {
            bottomPane.setDividerLocation((int) pce.getNewValue());
        });

        bottomPane.addPropertyChangeListener(JSplitPane.DIVIDER_LOCATION_PROPERTY, pce -> {
            topPane.setDividerLocation((int) pce.getNewValue());
        });

        JSplitPane mainPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, topPane, bottomPane);

        setContentPane(mainPane);
        setLocationRelativeTo(null);
        setMinimumSize(new Dimension(400, 400));
        setVisible(true);
    }

    public static void main(String[] args) {
        new Example();
    }
}
于 2016-06-06T10:22:53.717 回答
1

你必须听分裂变化：

split.addPropertyChangeListener(JSplitPane.DIVIDER_LOCATION_PROPERTY, 
    new PropertyChangeListener() {
       @Override
       public void propertyChange(PropertyChangeEvent pce) {}
});

（有关详细信息，请参阅检测 JSplitPane 分隔线移动）

每当您更改一个 JSplitPane 的大小时，您也必须更改另一个。

split.setDividerLocation(proportionalLocation);
于 2016-06-06T10:19:22.563 回答
1

您还可以查看拆分窗格同步器。

这是一个可重用的类，允许您同步 2 个（或更多）拆分窗格。这些类使用单个PropertyChangeListener来管理分隔符位置的更改，因此您的应用程序代码不需要单独跟踪每个拆分窗格。

于 2016-06-06T14:35:06.477 回答