protected void DrawBackground(Cairo.Context cr) { var totalRect = GetTotalBounds(); cr.SetSourceColor(BackgroundColor); cr.Rectangle(totalRect.X, totalRect.Y, totalRect.Width, totalRect.Height); cr.Fill(); cr.Save(); cr.Translate(XOffset, YOffset); cr.Scale(Scale, Scale); if (Surface != null) { cr.SetSource(Surface, 0, 0); using (SurfacePattern pattern = (SurfacePattern)cr.GetSource()) { pattern.Filter = Filter.Nearest; } cr.Paint(); } else if (Image != null) { using (Surface source = new BitmapSurface(Image)) { cr.SetSource(source, 0, 0); using (SurfacePattern pattern = (SurfacePattern)cr.GetSource()) { pattern.Filter = Filter.Nearest; } cr.Paint(); } } else { Cairo.Rectangle extents = cr.ClipExtents(); for (int i = 0; i < Width * Height; i++) { int tileX = i % Width; int tileY = i / Width; Cairo.Rectangle rect = GetTileRectWithPadding(tileX, tileY, scale: false, offset: false); if (!CairoHelper.RectsOverlap(extents, rect)) { continue; } cr.Save(); cr.Translate(rect.X + TilePaddingX, rect.Y + TilePaddingY); cr.Rectangle(0, 0, TileWidth, TileHeight); cr.Clip(); TileDrawer(i, cr); cr.Restore(); } } cr.Restore(); // Undo scale, offset }