使用JLabel的自定义字体

Question

我正在尝试在我的JFrame中使用特殊字体,但我遇到了问题.我有一个像这样定义的JLabel:

private JLabel lab = new JLabel("Text");

我有一个名为CUSTOMFONT-MEDIUM.TTF(TrueType字体)的文件,但在写完以下内容之后:

    try {
    lab.setFont(Font.createFont(Font.TRUETYPE_FONT, getClass().getResource("/CUSTOMFONT-MEDIUM.TTF").openStream()));
    } catch(IOException ex){
    //exception handled here I suppose  
    } catch(FontFormatException ex2) {
    //same here
    }

代码编译,一切正常,但"实验室"没有显示,所以没有文字.我想这是因为我从未指定字体大小应该是什么,但是我做的任何尝试都失败了.有人可以帮帮我吗？

Answer 1

@sasankad大多是正确的(+1).

创建字体后,其默认大小为 1

Font font = Font.createFont(Font.TRUETYPE_FONT, getClass().getResourceAsStream("/CUSTOMFONT-MEDIUM.TTF"));  

然后,您需要派生所需的字体大小和样式.

Font biggerFont = font.deriveFont(Font.BOLD, 48f);

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.FontFormatException;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagLayout;
import java.io.File;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestCustomFont {

    public static void main(String[] args) {
        new TestCustomFont();
    }

    public TestCustomFont() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            setLayout(new GridBagLayout());
            try {
                Font font = Font.createFont(Font.TRUETYPE_FONT, getClass().getResourceAsStream("/Royal Chicken.ttf"));
                JLabel happy = new JLabel("Happy little Miss Chicken");
                happy.setFont(font.deriveFont(Font.BOLD, 48f));
                add(happy);
            } catch (FontFormatException | IOException ex) {
                ex.printStackTrace();
            }
        }

    }

}

查看java.awt.Font了解更多详情......

您可能还想查看物理和逻辑字体,字体配置文件

Answer 2

您创建的字体必须首先注册GraphicsEnvironment到所有人都可以访问并导出字体的大小:

Font font = Font.createFont(Font.TRUETYPE_FONT, getClass().getResource("/CUSTOMFONT-MEDIUM.TTF").openStream());   

GraphicsEnvironment genv = GraphicsEnvironment.getLocalGraphicsEnvironment();
genv.registerFont(font);
// makesure to derive the size
font = font.deriveFont(12f);