private void DrawChanges(DrawingContext drawingContext, NormalizedSnapshotSpanCollection changes, Brush brush)
{
if (changes.Count > 0)
{
double yTop = Math.Floor(_scrollBar.GetYCoordinateOfBufferPosition(changes[0].Start)) + markerStartOffset;
double yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(changes[0].End)) + markerEndOffset;
for (int i = 1; i < changes.Count; ++i)
{
double y = _scrollBar.GetYCoordinateOfBufferPosition(changes[i].Start) + markerStartOffset;
if (yBottom < y)
{
drawingContext.DrawRectangle(
brush,
null,
new Rect(0, yTop, markerWidth, yBottom - yTop));
yTop = y;
}
yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(changes[i].End)) + markerEndOffset;
}
drawingContext.DrawRectangle(
brush,
null,
new Rect(0, yTop, markerWidth, yBottom - yTop));
}
}
private void DrawMarkers(DrawingContext drawingContext, NormalizedSnapshotSpanCollection markers, Brush brush, bool right, short xOfs, short markerWidth)
{
if (markers.Count > 0)
{
double yTop = Math.Floor(_scrollBar.GetYCoordinateOfBufferPosition(markers[0].Start)) + markerStartOffset;
double yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(markers[0].End)) + markerEndOffset;
double x = right ? _scrollBar.Width - markerWidth + xOfs : xOfs;
for (int i = 1; i < markers.Count; ++i)
{
double y = _scrollBar.GetYCoordinateOfBufferPosition(markers[i].Start) + markerStartOffset;
if (yBottom < y)
{
drawingContext.DrawRectangle(
brush, null,
new Rect(x, yTop, markerWidth, yBottom - yTop));
yTop = y;
}
yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(markers[i].End)) + markerEndOffset;
}
drawingContext.DrawRectangle(
brush, null,
new Rect(x, yTop, markerWidth, yBottom - yTop));
}
}
public void Render(DrawingContext drawingContext)
{
if (!HighlightWordTaggerProvider.Taggers.ContainsKey(_textView))
{
return;
}
NormalizedSnapshotSpanCollection spans = new NormalizedSnapshotSpanCollection(new SnapshotSpan(_textView.TextSnapshot, 0, _textView.TextSnapshot.Length));
IEnumerable <ITagSpan <HighlightWordTag> > tags = HighlightWordTaggerProvider.Taggers[_textView].GetTags(spans);
List <SnapshotSpan> highlightList = new List <SnapshotSpan>();
foreach (ITagSpan <HighlightWordTag> highlight in tags)
{
highlightList.Add(highlight.Span);
}
NormalizedSnapshotSpanCollection highlights = new NormalizedSnapshotSpanCollection(highlightList);
if (highlights.Count > 0)
{
double yMark = Options.FindMarkSize * 0.5;
double yTop = Math.Floor(_scrollBar.GetYCoordinateOfBufferPosition(highlights[0].Start)) + markerStartOffset - yMark;
double yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(highlights[0].End)) + markerEndOffset + yMark;
double x = _scrollBar.Width - markerRight;
for (int i = 1; i < highlights.Count; ++i)
{
double y = _scrollBar.GetYCoordinateOfBufferPosition(highlights[i].Start) + markerStartOffset;
if (yBottom < y)
{
drawingContext.DrawRectangle(
Colors.HighlightsBrush, null,
new Rect(x, yTop, markerWidth, yBottom - yTop));
yTop = y;
}
yBottom = Math.Ceiling(_scrollBar.GetYCoordinateOfBufferPosition(highlights[i].End)) + markerEndOffset + yMark;
}
drawingContext.DrawRectangle(
Colors.HighlightsBrush, null,
new Rect(x, yTop, markerWidth, yBottom - yTop));
}
}
private void RenderMarks()
{
if (_textView.IsClosed)
{
return;
}
try
{
using (DrawingContext drawingContext = MarksVisual.RenderOpen())
{
// Render viewport
double textHeight = Math.Min(_textRenderer.Height, DrawHeight);
double numVisibleLines = _textView.ViewportHeight / _textView.LineHeight;
int viewportHeight = Math.Max((int)(numVisibleLines * (textHeight / _textRenderer.NumLines)), 5);
int firstLine = (int)_scrollBar.GetYCoordinateOfBufferPosition(new SnapshotPoint(_textView.TextViewLines.FirstVisibleLine.Snapshot, _textView.TextViewLines.FirstVisibleLine.Start));
drawingContext.DrawRectangle(Colors.VisibleRegionBrush, null, new Rect(0.0, firstLine, ActualWidth, viewportHeight));
// Render various marks
_changeRenderer.Colors = Colors;
_changeRenderer.Render(drawingContext);
_highlightRenderer.Colors = Colors;
_highlightRenderer.Render(drawingContext);
_markerRenderer.Colors = Colors;
_markerRenderer.Render(drawingContext);
if (Options.CursorBorderEnabled)
{
drawingContext.DrawRectangle(null, Colors.VisibleRegionBorderPen, new Rect(0.5, firstLine + 0.5, ActualWidth - 1.0, viewportHeight - 1.0));
}
}
}
catch (Exception)
{
// Just in case.
}
}