设置自定义字体

Question

我正在尝试在我的程序中将自定义字体 (bilboregular.ttf) 设置为 2 个 jLabels 但是字体没有被成功加载。

这里是主要的方法调用：

//this should work if the build is in a jar file, otherwise it'll try to load it directly from the file path (i'm running in netbeans)
if (!setFonts("resources/bilboregular.ttf")) {
        System.out.println("=================FAILED FIRST OPTION"); // <<<<<<<< This is being displayed
if(!setFonts(System.getProperty("user.dir")+"/src/resources/bilboregular.ttf")){
            System.out.println("=================FAILED SECOND OPTION"); // <<< This is not being displayed
        }
    }

这是另一种方法：

public boolean setFonts(String s) {
    try {
jLabel3.setFont(java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, new java.io.File(s)));
jLabel4.setFont(java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, new java.io.File(s)));
        return true;
    } catch (Exception ex) {
        return false;
    }
}

Answer 1

首先获得URL 到Font。然后做这样的事情。

'Airacobra Condensed' 字体可从Download Free Fonts 获得。

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

class LoadFont {
    public static void main(String[] args) throws Exception {
        // This font is < 35Kb.
        URL fontUrl = new URL("http://www.webpagepublicity.com/" +
            "free-fonts/a/Airacobra%20Condensed.ttf");
        Font font = Font.createFont(Font.TRUETYPE_FONT, fontUrl.openStream());
        GraphicsEnvironment ge = 
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        ge.registerFont(font);
        JList fonts = new JList( ge.getAvailableFontFamilyNames() );
        JOptionPane.showMessageDialog(null, new JScrollPane(fonts));
    }
}

---

好的，这很有趣，但是这个字体实际上是什么样子的？

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

class DisplayFont {
    public static void main(String[] args) throws Exception {
        URL fontUrl = new URL("http://www.webpagepublicity.com/" +
            "free-fonts/a/Airacobra%20Condensed.ttf");
        Font font = Font.createFont(Font.TRUETYPE_FONT, fontUrl.openStream());
        font = font.deriveFont(Font.PLAIN,20);
        GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        ge.registerFont(font);

        JLabel l = new JLabel(
            "The quick brown fox jumped over the lazy dog. 0123456789");
        l.setFont(font);
        JOptionPane.showMessageDialog(null, l);
    }
}

Answer 2

• 不要为每个JLabel单独加载新的Font

意思

public boolean setFonts(String s) {
    try {
jLabel3.setFont(java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, new java.io.File(s)));
jLabel4.setFont(java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, new java.io.File(s)));
        return true;
    } catch (Exception ex) {
        return false;
    }
}

• 创建Font(s) 为Local variable(s) 并仅更改jLabel3.setFont(myFont)，或注册新字体(see link from @StanislavLs comment)

例如

InputStream myFont = OptionsValues.class.getResourceAsStream(
     "resources/bilboregular.ttf");