我是否可以在JTextPane
中突出显示一些文本,从一个值开始,以另一个值结束,如下图所示,但颜色为黄色?
"“JTextPane 突出显示文本"”
谢谢。
发布于 2011-04-15 17:52:08
通常有几种可能性,这取决于您所说的“突出显示”的真正含义:-)
通过在文档级更改任意文本部分的任何样式属性来突出显示,如下所示
SimpleAttributeSet sas = new SimpleAttributeSet();
StyleConstants.setForeground(sas, Color.YELLOW);
doc.setCharacterAttributes(start, length, sas, false);
通过textPane级别上的加亮器突出显示:
DefaultHighlighter.DefaultHighlightPainter highlightPainter =
new DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
textPane.getHighlighter().addHighlight(startPos, endPos,
highlightPainter);
发布于 2012-02-29 21:33:05
JTextArea textComp = new JTextArea();
// Highlight the occurrences of the word "public"
highlight(textComp, "public");
// Creates highlights around all occurrences of pattern in textComp
public void highlight(JTextComponent textComp, String pattern)
{
// First remove all old highlights
removeHighlights(textComp);
try
{
Highlighter hilite = textComp.getHighlighter();
Document doc = textComp.getDocument();
String text = doc.getText(0, doc.getLength());
int pos = 0;
// Search for pattern
// see I have updated now its not case sensitive
while ((pos = text.toUpperCase().indexOf(pattern.toUpperCase(), pos)) >= 0)
{
// Create highlighter using private painter and apply around pattern
hilite.addHighlight(pos, pos+pattern.length(), myHighlightPainter);
pos += pattern.length();
}
} catch (BadLocationException e) {
}
}
// Removes only our private highlights
public void removeHighlights(JTextComponent textComp)
{
Highlighter hilite = textComp.getHighlighter();
Highlighter.Highlight[] hilites = hilite.getHighlights();
for (int i=0; i<hilites.length; i++)
{
if (hilites[i].getPainter() instanceof MyHighlightPainter)
{
hilite.removeHighlight(hilites[i]);
}
}
}
// An instance of the private subclass of the default highlight painter
Highlighter.HighlightPainter myHighlightPainter = new MyHighlightPainter(Color.red);
// A private subclass of the default highlight painter
class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter
{
public MyHighlightPainter(Color color)
{
super(color);
}
}
发布于 2011-04-15 16:25:18
可以,您可以通过JTextPane继承的JTextComponent中的函数setSelectionStart和setSelectionEnd。
https://stackoverflow.com/questions/5674128
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