java - Java 1.7 (Windows) 中的文本抗锯齿失效

Question

对于 Java 1.7 (Windows) 的 Swing 组件，文本的抗锯齿呈现提示似乎已损坏。设置 KEY_ANTIALIASING 和/或 KEY_TEXT_ANTIALIASING 不再影响 JLabel、JEditorPane 等的显示 - 但实际上我的项目需要不同的设置。

您可以在这张由测试程序生成的屏幕截图中比较 Java 1.6 (jdk1.6.0_45) 和 Java 1.7 (jdk1.7.0_40) 中的不同行为下面:

左侧是 Java 1.6，右侧是 Java 1.7。第一列用 Graphics2D.drawString 绘制，第二列用 JLabel 绘制。在 Java 1.6 中，呈现提示会影响 JLabel 显示，而在 Java 1.7 中，所有 JLabel 呈现相同(除了具有小数度量的那个)。

您知道我如何让抗锯齿提示影响 Java 1.7 中的 Swing 组件吗？

测试程序:

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

    public class AntialiasMain extends JFrame {
    public AntialiasMain() {
        JPanel panel = new JPanel(new GridLayout(0, 1));
        panel.add(new AntialiasLabel("default", null));

        HashMap<Key, Object> hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
        panel.add(new AntialiasLabel("AA off", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        panel.add(new AntialiasLabel("AA on", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
        panel.add(new AntialiasLabel("TextAA off", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        panel.add(new AntialiasLabel("TextAA on", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        panel.add(new AntialiasLabel("AA+TextAA on", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        panel.add(new AntialiasLabel("AA+FracMetr on", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        panel.add(new AntialiasLabel("AA+TextLCD on", hints));

        hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        panel.add(new AntialiasLabel("TextLCD on", hints));

        getContentPane().add(panel);

    }

    class AntialiasLabel extends JLabel {
        private final HashMap<Key, Object>  hints;
        private final String                label;

        private static final String         PALYNDROME          = "The quick brown fox jumped over the lazy dog";

        public AntialiasLabel(String label, HashMap<Key, Object> hints) {
            super(PALYNDROME);
            setForeground(Color.BLACK);
            setBorder(BorderFactory.createEmptyBorder(10, 150, 10, 10));
            this.label = label;
            this.hints = hints;
        }

        @Override
        protected void paintComponent(Graphics g) {
            Graphics2D g2 = (Graphics2D) g;
            if (hints != null)
                g2.setRenderingHints(hints);
            g2.drawString("Setting: " + label, 2, getHeight() / 2 + 5);
            super.paintComponent(g2);
        }
    }

    public static void main(final String[] args) {
        JFrame f = new AntialiasMain();
        f.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        f.pack();
        f.setVisible(true);
    }
}

编辑:系统属性swing.aatext 和awt.useSystemAAFontSettings 无效。也没有更改外观。

Answer 1

在 this answer 中找到解决方案.使用以下内容更新问题中的代码:

private static final Object AA_TEXT_PROP = getAaTextProperty();

public static Object getAaTextProperty() {

    Object aatext = null;
    try {
        Class<?> c = Class.forName("sun.swing.SwingUtilities2");
        Field f = c.getField("AA_TEXT_PROPERTY_KEY");
        aatext = f.get(null);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return aatext;
}
...

public AntialiasLabel(String label, HashMap<Key, Object> hints) {
    super(PALYNDROME);
    putClientProperty(AA_TEXT_PROP, null);
    ...
}

在 Java 1.7 Windows 上测试。请注意，最近(2015 年 2 月)的 Windows 更新如 kb3013455许多系统上的字体抗锯齿都已损坏。