public static Task <SKImage?> ToSKImageAsync(this ImageSource imageSource, CancellationToken cancellationToken = default)
{
if (imageSource == null)
{
throw new ArgumentNullException(nameof(imageSource));
}
return(imageSource switch
{
// 1. first try SkiaSharp sources
SKImageImageSource iis => FromSkia(iis.Image),
SKBitmapImageSource bis => FromSkia(SKImage.FromBitmap(bis.Bitmap)),
SKPixmapImageSource xis => FromSkia(SKImage.FromPixels(xis.Pixmap)),
SKPictureImageSource pis => FromSkia(SKImage.FromPicture(pis.Picture, pis.Dimensions)),
// 2. then try Stream sources
StreamImageSource stream => FromStream(stream.Stream.Invoke(cancellationToken)),
UriImageSource uri => FromStream(uri.GetStreamAsync(cancellationToken)),
// 3. finally, use the handlers
FileImageSource file => FromHandler(PlatformToSKImageAsync(file, cancellationToken)),
FontImageSource font => FromHandler(PlatformToSKImageAsync(font, cancellationToken)),
// 4. all is lost
_ => throw new ArgumentException("Unable to determine the type of image source.", nameof(imageSource))
});
public async Task PixmapReturnsSimilarImage()
{
using var bitmap = new SKBitmap(new SKImageInfo(100, 100));
using var pixmap = bitmap.PeekPixels();
var source = new SKPixmapImageSource {
Pixmap = pixmap
};
var result = await source.ToSKImageAsync();
Assert.NotNull(result);
Assert.Equal(bitmap.Info, pixmap.Info);
}
