private SKImageInfo CreateBitmap()

in source/SkiaSharp.Views.Uno/SkiaSharp.Views.Uno.WinUI.Skia/SKXamlCanvas.Skia.cs [81:116]

28 lines of code
9 McCabe index (conditional complexity)


		private SKImageInfo CreateBitmap(out SKSizeI unscaledSize, out float dpi)
		{
			var size = CreateSize(out unscaledSize, out dpi);
			var info = new SKImageInfo(size.Width, size.Height, SKColorType.Bgra8888, SKAlphaType.Premul);

			if (bitmap?.PixelWidth != info.Width || bitmap?.PixelHeight != info.Height)
				FreeBitmap();

			if (bitmap == null && info.Width > 0 && info.Height > 0)
			{
				bitmap = new WriteableBitmap(info.Width, info.Height);

				var brush = new ImageBrush
				{
					ImageSource = bitmap,
					AlignmentX = AlignmentX.Left,
					AlignmentY = AlignmentY.Top,
					Stretch = Stretch.Fill
				};

				Background = brush;
			}

			if (pixels == null || pixelWidth != info.Width || pixelHeight != info.Height)
			{
				FreeBitmap();

				pixels = new byte[info.BytesSize];
				pixelsHandle = GCHandle.Alloc(pixels, GCHandleType.Pinned);

				pixelWidth = info.Width;
				pixelHeight = info.Height;
			}

			return info;
		}