DrawingContext像素对齐
1、DrawRectangle 为了像素对齐,可以PushGuidelineSet
guideLines.GuidelinesX .Add(1.5);
guideLines.GuidelinesY .Add(1.5);
drawingContext.PushGuidelineSet (guideLines);
drawingContext.DrawRectangle (CRoomControlHelper. GetBackgroundBrush(contextNode ), CRoomControlHelper.GetBorderPen (contextNode), new Rect (new Point(1, 1), new Point(this .RenderSize. Width - 1, this .RenderSize. Height - 1)));
drawingContext.Pop ();
2、PushGuidelineSet 会导致DrawImage 边缘模糊