Java2D图形抗锯齿

Question

我是Java的新手，并尝试使用Java2D Graphics创建图像。但是输出却是抗锯齿的。我尝试了多种方法来纠正它，但是没有用。字符变得失真或锯齿。

public BufferedImage createNameOnButton(String label) {

    int messageWidth = 0;

    Font font = new Font("Arial", Font.PLAIN, 11);

    BufferedImage bi = new BufferedImage(

        10, 10, BufferedImage.TYPE_INT_RGB);

    Graphics2D g2d = (Graphics2D) bi.getGraphics();

    g2d.setRenderingHint(

        RenderingHints.KEY_ANTIALIASING,

        RenderingHints.VALUE_ANTIALIAS_ON);

    g2d.setRenderingHint(

        RenderingHints.KEY_TEXT_ANTIALIASING,

        RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

    g2d.setRenderingHint(

        RenderingHints.KEY_FRACTIONALMETRICS,

        RenderingHints.VALUE_FRACTIONALMETRICS_ON);

    g2d.setFont(font);

    bi = g2d.getDeviceConfiguration()

        .createCompatibleImage(500, 30, Transparency.BITMASK);

    FontMetrics fm = bi.getGraphics().getFontMetrics(font);

    int messageHeight = fm.getHeight() - fm.getDescent();

    for (char ch : label.toCharArray()) {

        messageWidth += fm.charWidth(ch);

    }

    bi = bi.getSubimage(50, 0, messageWidth + 10, fm.getHeight());

    Graphics g = bi.getGraphics();

    g.setColor(Color.black);

    AttributedString as = new AttributedString(label);

    as.addAttribute(TextAttribute.FONT, font);

    g.drawString(as.getIterator(), 5, messageHeight);

    g2d.dispose();

    g.dispose();

    return bi;

}

谁能帮我纠正错误？

Answer 1

正如Traroth所提到的，这很可能是由于g2d.setRenderingHint(    RenderingHints.KEY_ANTIALIASING,    RenderingHints.VALUE_ANTIALIAS_ON);g2d.setRenderingHint(    RenderingHints.KEY_TEXT_ANTIALIASING,    RenderingHints.VALUE_TEXT_ANTIALIAS_ON);相反，这应该是g2d.setRenderingHint(    RenderingHints.KEY_ANTIALIASING,    RenderingHints.VALUE_ANTIALIAS_OFF);g2d.setRenderingHint(    RenderingHints.KEY_TEXT_ANTIALIASING,    RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);

Answer 2

我发现仅此行就可以解决问题：  g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);之后，只需使用drawString（）即可。