我试图在Swing应用程序中使用OpenDyslexic作为字体选项。但令人惊讶的是,OpenDyslexic看起来比同尺寸的其他任何字体都大得多,即使它在其他应用程序中看起来正常。我尝试了一些其他OpenType字体,并且它们看起来并不特别大或小。为什么OpenDyslexic在Java中如此之大,以及我如何让Java正常地调整它的大小,所以我不必特殊说明OpenDyslexic的大小?为什么这个字体在Java中如此之大?
对于所有操作系统上的Oracle JRE(我试过1.7.0_11,1.7.0_15和最新的1.7.0_21),当Java使用Font.createFont
加载字体文件时,字体太大。然而,当我安装字体到操作系统中,该行为是在所有3个平台上的不同:
- 在Linux中,安装的字体
~/.fonts
没有什么好处。截图在安装字体和安装之后看起来是一样的。 - 在Windows中,安装字体修复了字体字形,但字体的间距仍然太大!见下面的截图。
- 在OS X中,安装字体修复了它!它看起来像在OS X上一个正常大小的字体
更新:有趣的是,OpenJDK的(无论是7u21 Ubuntu的软件包在Linux和OS X的obuildfactory编译)不不表现出错误。在OpenJDK上,15pt OpenDyslexic'm'的宽度为15px,因为它应该是当从文件创建字体和操作系统处理字体时。该错误位于最新的Oracle JRE中,但不在最新的OpenJDK中。
这是我的示例程序。请注意,要尝试它,您需要将OpenDyslexic文件放入资源/中。或者,将OpenDyslexic安装到您的系统中并取出registerFonts()
呼叫。
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Font;
import java.awt.FontFormatException;
import java.awt.GraphicsEnvironment;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Locale;
import javax.swing.DefaultComboBoxModel;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
public class FontFrame {
/**
* Register extra fonts from resources. If you already have it installed on
* the computer, you can skip this.
*/
private static void registerFonts() {
String[] resources = {
"OpenDyslexic-Regular.otf",
"OpenDyslexic-Italic.otf",
"OpenDyslexic-Bold.otf",
"OpenDyslexic-BoldItalic.otf"
};
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
for (String filename: resources) {
InputStream stream = FontFrame.class.getResourceAsStream("resources/" + filename);
try {
Font font = Font.createFont(Font.TRUETYPE_FONT, stream);
ge.registerFont(font);
} catch (FontFormatException | IOException e) {
throw new IllegalStateException(e);
}
}
}
private static void createUI(boolean allFonts) {
final JTextArea textArea = new JTextArea(
"Font created to help dyslexic readers. " +
"Bottom heavy and unique character shapes help " +
"prevent letters and numbers from being confused.");
textArea.setWrapStyleWord(true);
textArea.setLineWrap(true);
final DefaultComboBoxModel<String> model = new DefaultComboBoxModel<>();
if (allFonts) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
HashSet<Object> seenFamilies = new HashSet<>();
Font[] fonts = ge.getAllFonts();
for (Font font: fonts) {
String familyName = font.getFamily(Locale.ENGLISH);
if (seenFamilies.contains(familyName))
continue;
seenFamilies.add(familyName);
model.addElement(familyName);
}
} else {
model.addElement("SansSerif");
model.addElement("OpenDyslexic");
}
final int fontSize = 15;
textArea.setFont(new Font("SansSerif", Font.PLAIN, fontSize));
model.addListDataListener(new ListDataListener() {
@Override public void intervalRemoved(ListDataEvent e) {}
@Override public void intervalAdded(ListDataEvent e) {}
@Override public void contentsChanged(ListDataEvent e) {
if (e.getIndex0() == -1 && e.getIndex1() == -1) {
SwingUtilities.invokeLater(new Runnable() { @Override public void run() {
String selectedFamily = (String) model.getSelectedItem();
Font font = new Font(selectedFamily, Font.PLAIN, fontSize);
textArea.setFont(font);
}});
}
}
});
JComboBox<String> familyChooser = new JComboBox<>(model);
familyChooser.setMaximumRowCount(50);
familyChooser.setRenderer(new DefaultListCellRenderer() {
private static final long serialVersionUID = 1L;
public Component getListCellRendererComponent(JList<?> list,
Object value, int index, boolean isSelected,
boolean cellHasFocus) {
Component comp = super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
String familyName = (String) value;
Font font = new Font(familyName, Font.PLAIN, fontSize);
comp.setFont(font);
return comp;
}
});
JPanel jpanel = new JPanel();
jpanel.setLayout(new BorderLayout());
jpanel.add(familyChooser, BorderLayout.NORTH);
jpanel.add(textArea, BorderLayout.CENTER);
JFrame jframe = new JFrame();
jframe.getContentPane().add(jpanel);
jframe.setSize(300, 300);
jframe.invalidate();
jframe.setVisible(true);
jframe.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
}
public static void main(String[] args) throws InvocationTargetException, InterruptedException {
registerFonts();
final boolean allFonts = Arrays.asList(args).contains("--all");
SwingUtilities.invokeAndWait(new Runnable() {
@Override public void run() {
createUI(allFonts);
}
});
}
}
[你可以测试](http://tips4java.wordpress.com/2008/11/30/visual-font-designer/)如果属实,由Darryl Burke – mKorbel
@mKorbel制作,字体看起来一样在可视化字体设计器演示中,就像在查看已安装的字体时一样。在OS X上看起来不错,但在其他平台上看起来很糟糕。 (请注意,我已经更新了这个问题来描述在不同平台上安装字体。) – yonran