Java -> MigLayout如何设置gap

Question

我有一个小问题，我使用MigLayout开始了一个新的图形用户界面项目，我喜欢它的布局，但有一件事我想不通，那就是如何消除组件本身、组件和框架之间的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gap gapx我确实在两个轴上将gap设置为0px，但差距仍然存在。有人可以帮帮忙吗?他们的论坛是一个鬼城：)

我想要消除JPanels和JFrame之间的差距。红色框和框架边框，并且我想删除红色JPanel中的填充。我的代码如下：

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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BorderLayout中删除容器之间的空格，可以使用类似于miglayout的Docking。

通过停靠，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");
...

我希望这能帮到你。

Answer 2

使用像这样的东西

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，在布局约束中设置insets可以解决它。

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

如果我们不将其设置为0，则会设置默认大小并且很大，就像您在项目中看到的那样。