Question

这是我到目前为止所做的，但该领域的文字没有抗锯齿。我已经尝试谷歌搜索了一段时间，但无法找到讨论它的任何线程（令我惊讶的是）。有谁知道如何做到这一点？

public class SearchField extends JTextField{
    public SearchField(){
       super();
       this.setOpaque(false);
       this.setPreferredSize(new Dimension(fieldWidth, fieldHeight));
       this.setBorder(new EmptyBorder(4,8,4,8));
       this.setFont(fieldFont);
     }

    public void paintComponent(Graphics paramGraphics){
          Graphics2D g = (Graphics2D) paramGraphics;
          g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

          g.setColor(ColorConstants.LIGHT_GRAY);
          g.fillRoundRect(0,0,fieldWidth,fieldHeight,4,4);
          super.paintComponent(g);
     }
  }

Answer 1

我发现使用显示TextLayout的here会很有帮助，因为人们可以使用isAntiAliased和usesFractionalMetrics调整FontRenderContext。

示例使用BufferedImage是巧合。

Answer 2

这是我决定要做的事情，直到找到更优雅的解决方案 - 运作良好。

private class SearchField extends JTextField{

   private final int fieldWidth = 375;
   private final int fieldHeight = 30;
   private final Font fieldFont = FontLoader.getCustomFont("Gotham-Bold.ttf", 15);
   private final Color foreground = ColorConstants.SEARCH_FIELD_FOREGROUND;
   private final Color background = ColorConstants.SEARCH_FIELD_BACKGROUND;

   public SearchField(){
      super();
      this.setOpaque(false);
      this.setPreferredSize(new Dimension(fieldWidth, fieldHeight));
      this.setBorder(new EmptyBorder(5,5,5,5));
      this.setFont(fieldFont);
      this.setForeground(new Color(0,0,0,0));
      this.setSelectedTextColor(new Color(0,0,0,0));
   }

   @Override
   public void paintComponent(Graphics paramGraphics){
      Graphics2D g = (Graphics2D) paramGraphics.create();
      GraphicUtils.enableAntiAliasing(g); //RenderingHints
      g.setColor(background);
      g.fillRoundRect(0, 0, fieldWidth, fieldHeight, 4, 4);
      super.paintComponent(g);
      g.setColor(foreground);
      g.drawString(this.getText(), 5, 20);
   }
}

Java：如何在JTextField中启用文本消除锯齿？

2 个答案: