我目前正在编写一个文本编辑器,我有这个代码,使特定单词的背景与其他单词不同,但我希望前景编辑颜色而不是背景。
这是我的代码:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JTextPane;
import javax.swing.text.AbstractDocument;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
import javax.swing.text.Document;
import javax.swing.text.Highlighter;
import javax.swing.text.JTextComponent;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
public class test {
final static JEditorPane jep = new JEditorPane();
static JButton button = new JButton("Refresh");
static JTextPane jTextPane1 = new JTextPane();
public static void main(String[] args) throws BadLocationException {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jep.setText("Hello to the public place here are the public people");
frame.add(jep);
frame.pack();
frame.setSize(500, 500);
frame.add(button,BorderLayout.NORTH);
frame.setVisible(true);
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
try {
highlight(jep, "public");
} catch (BadLocationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
highlight(jep, "public");
}
public static void highlight(JTextComponent textComp, String pattern) throws BadLocationException {
try {
final MyHighlightPainter myHighlightPainter = new MyHighlightPainter(Color.red);
Highlighter hilite = textComp.getHighlighter();
MutableAttributeSet mas = (MutableAttributeSet)new SimpleAttributeSet ();
StyleConstants.setForeground(mas, Color.red);
Document doc = textComp.getDocument();
String text = doc.getText(0, doc.getLength());
int pos = 0;
// Search for pattern
while ((pos = text.indexOf(pattern, pos)) >= 0) {
hilite.addHighlight(pos, pos + pattern.length(), myHighlightPainter);
pos += pattern.length();
}
}finally{
}
}
}
class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter {
public MyHighlightPainter(Obect object) {
super((Color) object);
}
}
答案 0 :(得分:3)
您需要利用编辑器StyledDocuemnt
,这是一个简单的例子......
import java.awt.Color;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
public class Srap {
public static void main(String[] args) {
JTextPane textPane = new JTextPane();
StyledDocument doc = textPane.getStyledDocument();
Style style = textPane.addStyle("I'm a Style", null);
StyleConstants.setForeground(style, Color.red);
try {
doc.insertString(doc.getLength(), "BLAH ", style);
} catch (BadLocationException ex) {
}
StyleConstants.setForeground(style, Color.blue);
try {
doc.insertString(doc.getLength(), "BLEH", style);
} catch (BadLocationException e) {
}
}
}