java - Java -> MigLayout 如何设置间隙

Question

我有一个小问题，我使用 MigLayout 开始了一个新的 GUI 项目，我喜欢这种布局，但我无法弄清楚的一件事是如何消除组件本身、组件和框架之间的所有间隙以及单元格和行之间的间隙

现在 MigLayout 文档描述了使用“gap 0px 0px”，其中间隙 [gapx] [gapy] 我确实在两个轴上都将间隙设置为 0px，但间隙仍然存在，有人可以在这里帮忙，他们的论坛是一座鬼城 :)

我想删除 JPanel 和 JFrame 之间的间隙。红色框和框架边框，我想删除红色 JPanel 内的填充。我的代码如下：

package pe.view;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import net.miginfocom.swing.MigLayout;

public class UI_View extends JFrame
{
    //Content panels
    private JPanel  left   = new JPanel(new MigLayout());
    private JPanel  center = new JPanel(new MigLayout());
    private JPanel  right  = new JPanel(new MigLayout());

    //Content components
    private DefaultListModel list_content = new DefaultListModel();
    private JList   list   = new JList(list_content);

    public UI_View()
    {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setMinimumSize(new Dimension(800, 600));
        this.setTitle("PropriarityEnvoirment");
        this.setExtendedState(JFrame.MAXIMIZED_BOTH);
        this.setLayout(new MigLayout("gap 0px 0px"));

        String data[] = {"Hi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi","Hello","WiWi"};
        for(int i = 0; i < data.length; i++)
        {
            list_content.addElement(data[i]);
        }

        left.add(list);

        left.setBackground(Color.red);
        center.setBackground(Color.green);
        right.setBackground(Color.blue);

        this.add(left, "growy, pushy");
        this.add(center, "grow, pushx");
        this.add(right, "grow, pushy");
    }
}

Answer 1

要在 miglayout 中删除容器之间的空间，您可以使用Docking，它类似于 BorderLayout。

对接后，您的代码将如下所示：

...
this.setLayout(new MigLayout());
...
left.add(list, "dock north");
...
this.add(left, "dock west");
this.add(center, "dock center");
this.add(right, "dock east");
...

我希望这有帮助。

Answer 2

使用类似的东西

new MigLayout("", "0[]0[]0[]0", "[]"); 
this.add(left, "gapx 0 0"); 
this.add(center, "gapx 0 0");

Answer 3

我今天也找到了它并在布局约束中设置插图解决了它。

panel.setLayout(new MigLayout("insets 0 0 0 0, fill, debug", "", ""));

如果我们不将其设置为0，则默认大小将设置为很大，就像您在项目中看到的一样。