JLabel 文本被截断

Question

从上面的图片可以看出，一些文字被截断了:( 代码：

package malgm.school.clockui.ui;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;

import javax.swing.*;

import malgm.school.clockui.ClockUI;
import malgm.school.clockui.ResourceLoader;

public class ClockFrame extends JFrame {

    private static final long serialVersionUID = 1L;

    public final static int FRAME_WIDTH = 600;
    public final static int FRAME_HEIGHT = 200;

    public ClockFrame() {
        setTitle("Clock");
        setSize(FRAME_WIDTH, FRAME_HEIGHT);
        setResizable(false);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        relocalize();
    }

    public void relocalize() {
        //Wipe controls
        this.getContentPane().removeAll();
        this.setLayout(null);

        initComponents();
    }

    @SuppressWarnings("unused")
    private void initComponents() {
        setLayout(new BorderLayout());

        JPanel header = new JPanel();
        header.setLayout(new BoxLayout(header, BoxLayout.LINE_AXIS));

        JPanel section = new JPanel();
        section.setLayout(new BoxLayout(section, BoxLayout.LINE_AXIS));

        JLabel label = new JLabel("The time is...");

        JButton speakButton = new JButton("Speak");
        speakButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                Runtime rt = Runtime.getRuntime();

                try {
                    Process pr = rt.exec(ClockUI.dir + "/SpeakingClock.exe");
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            }

        });

        JLabel time = new JLabel("test");
        ResourceLoader resLoader = new ResourceLoader();
        time.setFont(resLoader.getFont(ResourceLoader.FONT_DIGITAL, 72));

        section.add(Box.createHorizontalGlue());
        section.add(time);
        section.add(Box.createHorizontalGlue());

        header.add(label);
        header.add(Box.createHorizontalGlue());
        header.add(speakButton);

        add(header, BorderLayout.PAGE_START);
        add(section, BorderLayout.CENTER);
    }

}

字体：http://www.dafont.com/digital-7.font

任何帮助将不胜感激

Answer 1

Swing layouts 成功的关键是避免 setLayout(null) 和 pack() 封闭的 Window。这允许包含的组件采用它们的首选大小，如下所示。为了避免这种pitfall，不要调用setResizable(false)。

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

/** @see https://stackoverflow.com/a/23551260/230513 */
public class ClockFrame extends JFrame {

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                ClockFrame cf = new ClockFrame();
            }
        });
    }

    public ClockFrame() {
        setTitle("Clock");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        initComponents();
        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }

    @SuppressWarnings("unused")
    private void initComponents() {
        JPanel header = new JPanel();
        header.setLayout(new BoxLayout(header, BoxLayout.LINE_AXIS));
        JPanel section = new JPanel();
        section.setLayout(new BoxLayout(section, BoxLayout.LINE_AXIS));
        JLabel label = new JLabel("The time is...");
        JButton speakButton = new JButton("Speak");
        JLabel time = new JLabel("00:00");
        time.setFont(time.getFont().deriveFont(72f));
        section.add(Box.createHorizontalGlue());
        section.add(time);
        section.add(Box.createHorizontalGlue());
        header.add(label);
        header.add(Box.createHorizontalGlue());
        header.add(speakButton);
        add(header, BorderLayout.PAGE_START);
        add(section, BorderLayout.CENTER);
    }
}

Answer 2

之后

JLabel time = new JLabel("test");
ResourceLoader resLoader = new ResourceLoader();
time.setFont(resLoader.getFont(ResourceLoader.FONT_DIGITAL, 72));

添加time.setBorder(BorderFactory.createEmptyBorder(0, 20, 20, 20));

之后会是这样的：

JLabel time = new JLabel("test");
ResourceLoader resLoader = new ResourceLoader();
time.setFont(resLoader.getFont(ResourceLoader.FONT_DIGITAL, 72));
time.setBorder(BorderFactory.createEmptyBorder(0, 20, 20, 20));

Answer 3

将您的构造函数定义更改为（已编辑）

public Frame() {
    setTitle("Clock");
    setSize(FRAME_WIDTH, FRAME_HEIGHT);
    setResizable(false);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    relocalize();
    setSize(850, 650);
    setLocationRelativeTo(null);
    setVisible(true);
}