在JTextField中使用自定义插入符号进行辅助功能

Question

我正在编写一个Swing应用程序，我有一位阅读圣经的朋友。这个应用程序通过文本或段落进行搜索。

但我的朋友只能看到大字体大小和对比色。我将textField的插入符的颜色更改为setCaretColor，其中用户输入要搜索的文本。

尖号秀一样具有相同HIGHT字体矩形，但宽度少，我认为我的朋友罐头看不到。

是否有任何方法可以改变插入宽度以显示更大？

Answer 1

您是否看到过遍布互联网的Oreilly Swing书中的这个例子？看起来你可以定制插入符号很多。

http://www.java2s.com/Code/Java/Swing-JFC/Fanciercustomcaretclass.htm

Answer 2

可能这将有助于 http://java-sl.com/tip_overwrite_mode.html

Answer 3

也许有三种方式我怎么能重现Caret和选择日JTextComponents

import java.awt.Color; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.swing.text.DefaultCaret; 
import javax.swing.text.DefaultHighlighter; 
import javax.swing.text.Highlighter; 

public class TextFieldExample extends JFrame { 

    private static final long serialVersionUID = 1L; 

    public TextFieldExample() { 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     setLocationRelativeTo(null); 
     JPanel panel = new JPanel(); 
     JTextField tfield = new JTextField(10); 
     tfield.setText("default text"); 
     final JTextField tfield2 = new JTextField(10); 
     tfield2.setText("default text"); 
     tfield2.addFocusListener(new FocusListener() { 

      public void focusGained(FocusEvent fe) { 
       tfield2.setCaretPosition(tfield2.getDocument().getLength()); 
      } 

      public void focusLost(FocusEvent fe) { 
      } 
     }); 
     JTextField tfield3 = new JTextField(10); 
     tfield3.setText("default text"); 
     tfield3.setCaret(new HighlightCaret()); 
     panel.add(tfield); 
     panel.add(tfield2); 
     panel.add(tfield3); 
     add(panel); 
     pack(); 
     setVisible(true); 
    } 

    class HighlightCaret extends DefaultCaret { 

     private final Highlighter.HighlightPainter unfocusedPainter = 
       new DefaultHighlighter.DefaultHighlightPainter(new Color(230, 230, 210)); 
     private static final long serialVersionUID = 1L; 
     private boolean isFocused; 

     @Override 
     protected Highlighter.HighlightPainter getSelectionPainter() { 
      return isFocused ? super.getSelectionPainter() : unfocusedPainter; 
     } 

     @Override 
     public void setSelectionVisible(boolean hasFocus) { 
      if (hasFocus != isFocused) { 
       isFocused = hasFocus; 
       super.setSelectionVisible(false); 
       super.setSelectionVisible(true); 
      } 
     } 
    } 

    public static void main(String... args) { 
     SwingUtilities.invokeLater(new Runnable() { 

      public void run() { 
       TextFieldExample textFieldExample = new TextFieldExample(); 
      } 
     }); 
    } 
}