private static void DrawContentDiff(DiffTextEditorHelper.PerLineDrawArgs args)
{
if (args.DiffLine.ContentDiffs == null)
return;
var brush = args.DiffLine.LineType == DiffLine.LineTypes.Add
? Constants.HighlightAddBackground
: Constants.HighlightRemoveBackground;
args.DiffLine.ContentDiffs.SelectMany(d =>
BackgroundGeometryBuilder.GetRectsFromVisualSegment(
args.TextView,
args.VisualLine,
d.StartIndex,
d.EndIndex)
)
.ForEach(r =>
{
using(new GuidelineSetBlock(args.DrawingContext, r))
args.DrawingContext.DrawRectangle(brush, null, r);
});
}
private static void DrawForegroundLeft(DiffTextEditorHelper.PerLineDrawArgs args)
{
if (args.Index == 0)
DrawIndex(args.DrawingContext, args.Rect, args.DiffLine);
}
private static void DrawForeground(DiffTextEditorHelper.PerLineDrawArgs args)
{
if (_gridPen == null)
{
var presentationSource = PresentationSource.FromVisual(args.TextView);
if (presentationSource?.CompositionTarget != null)
{
var m = presentationSource.CompositionTarget.TransformToDevice;
_gridPen = new Pen(Constants.FrameBrush, 1 / m.M11); // 物理ピクセルで１
_gridPen.Freeze();
}
Debug.Assert(_gridPen != null);
}
var halfPenWidth = _gridPen.Thickness * 0.5;
using (new GuidelineSetBlock(
args.DrawingContext,
xGuides: new[]
{
NewIndexOffset + halfPenWidth,
LineTypeIndexOffset + halfPenWidth
}))
{
args.DrawingContext.DrawLine(
_gridPen,
new Point(NewIndexOffset, args.Rect.Top - 1),
new Point(NewIndexOffset, args.Rect.Bottom + 1));
args.DrawingContext.DrawLine(
_gridPen,
new Point(LineTypeIndexOffset, args.Rect.Top - 1),
new Point(LineTypeIndexOffset, args.Rect.Bottom + 1));
}
if (args.Index == 0)
DrawFileTypeMark(args.DrawingContext, args.Rect, args.DiffLine);
}