/// <summary>
/// Creates an <see cref="Image"/> from an encapsulated GDI+ bitmap.
/// </summary>
/// <param name="bitmap">The GDI+ bitmap from which to create the <see cref="Image"/>.</param>
/// <returns>
/// The <see cref="Image"/> this method creates.
/// </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="bitmap"/> is <b>null</b>.
/// </exception>
public static Image FromBitmap(System.Drawing.Bitmap bitmap)
{
if (bitmap == null)
{
throw new ArgumentNullException(nameof(bitmap));
}
Image image = new Image(
bitmap.Width,
bitmap.Height,
BitmapExtensions.PixelFormatToBitsPerPixel(bitmap.PixelFormat),
(int)(bitmap.HorizontalResolution + 0.5f),
(int)(bitmap.VerticalResolution + 0.5f));
BitmapData srcData = bitmap.LockBits(
new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadOnly,
bitmap.PixelFormat);
unsafe
{
fixed(ulong *dst = image.Bits)
{
Arrays.CopyStrides(
image.Height,
srcData.Scan0,
srcData.Stride,
new IntPtr(dst),
image.Stride8);
}
}
if (image.BitsPerPixel < 8)
{
Vectors.SwapBits(image.Bits.Length, image.BitsPerPixel, image.Bits, 0);
}
bitmap.UnlockBits(srcData);
return(Image.OnLoaded(
image,
null,
bitmap.Palette?.Entries?.Select(x => Color.FromArgb(x.A, x.R, x.G, x.B)).ToArray()));
}
