我需要在AvalonEdit中突出显示所有选定单词.我创建了一个HihglinghtingRule类的实例：
var rule = new HighlightingRule()
{
Regex = regex,//some regex for finding occurences
Color = new HighlightingColor {Background = new SimpleHighlightingBrush(Colors.Red)}
};
我该怎么办？
谢谢.
解决方法
要使用HighlightingRule,您必须创建突出显示引擎的另一个实例(HighlightingColorizer等)
编写一个突出显示单词的DocumentColorizingTransformer更容易,更有效：
public class ColorizeAvalonEdit : DocumentColorizingTransformer
{
protected override void ColorizeLine(DocumentLine line)
{
int lineStartOffset = line.Offset;
string text = CurrentContext.Document.GetText(line);
int start = 0;
int index;
while ((index = text.IndexOf("AvalonEdit",start)) >= 0) {
base.ChangeLinePart(
lineStartOffset + index,// startOffset
lineStartOffset + index + 10,// endOffset
(VisualLineElement element) => {
// This lambda gets called once for every VisualLineElement
// between the specified offsets.
Typeface tf = element.TextRunProperties.Typeface;
// Replace the typeface with a modified version of
// the same typeface
element.TextRunProperties.SetTypeface(new Typeface(
tf.FontFamily,FontStyles.Italic,FontWeights.Bold,tf.Stretch
));
});
start = index + 1; // search for next occurrence
}
}
}
