public void Draw(TextView textView, DrawingContext drawingContext)
{
if (textView.CaretIndex != -1)
{
var caretChar = '\0';
var behindCaretChar = '\0';
if (textView.CaretIndex < textView.TextDocument.TextLength)
{
caretChar = textView.TextDocument.GetCharAt(textView.CaretIndex);
}
if (textView.CaretIndex - 1 > 0 && textView.CaretIndex < textView.TextDocument.TextLength)
{
behindCaretChar = textView.TextDocument.GetCharAt(textView.CaretIndex - 1);
}
if (caretChar.IsOpenBracketChar() && !caretChar.IsPunctuationChar())
{
var closeOffset = textView.FindMatchingBracketForward(textView.CaretIndex, caretChar,
caretChar.GetCloseBracketChar());
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {
StartOffset = textView.CaretIndex, EndOffset = textView.CaretIndex + 1
}));
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {
StartOffset = closeOffset, EndOffset = closeOffset + 1
}));
}
if (behindCaretChar.IsCloseBracketChar() && !behindCaretChar.IsPunctuationChar())
{
var openOffset = textView.FindMatchingBracketBackward(textView.CaretIndex - 1, behindCaretChar,
behindCaretChar.GetOpenBracketChar());
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {
StartOffset = textView.CaretIndex - 1, EndOffset = textView.CaretIndex
}));
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {
StartOffset = openOffset, EndOffset = openOffset + 1
}));
}
}
}
public void Draw(TextView textView, DrawingContext drawingContext)
{
if (textView.CaretIndex != -1)
{
var caretChar = '\0';
var behindCaretChar = '\0';
if (textView.CaretIndex < textView.TextDocument.TextLength)
{
caretChar = textView.TextDocument.GetCharAt(textView.CaretIndex);
}
if (textView.CaretIndex - 1 > 0 && textView.CaretIndex < textView.TextDocument.TextLength)
{
behindCaretChar = textView.TextDocument.GetCharAt(textView.CaretIndex - 1);
}
if (caretChar.IsOpenBracketChar() && !caretChar.IsPunctuationChar())
{
var closeOffset = textView.FindMatchingBracketForward(textView.CaretIndex, caretChar,
caretChar.GetCloseBracketChar());
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {StartOffset = textView.CaretIndex, EndOffset = textView.CaretIndex + 1}));
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {StartOffset = closeOffset, EndOffset = closeOffset + 1}));
}
if (behindCaretChar.IsCloseBracketChar() && !behindCaretChar.IsPunctuationChar())
{
var openOffset = textView.FindMatchingBracketBackward(textView.CaretIndex - 1, behindCaretChar,
behindCaretChar.GetOpenBracketChar());
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {StartOffset = textView.CaretIndex - 1, EndOffset = textView.CaretIndex}));
Highlight(drawingContext,
VisualLineGeometryBuilder.GetRectsForSegment(textView,
new TextSegment {StartOffset = openOffset, EndOffset = openOffset + 1}));
}
}
}