private static void _PerformCopy(SpanBitmap src, ANDROIDBITMAP dst)
{
if (src.Info.IsEmpty)
{
return;
}
if (dst == null)
{
return;
}
if (dst.IsRecycled || !dst.IsMutable)
{
throw new ArgumentNullException(nameof(dst));
}
if (!TryGetBitmapInfo(dst.GetBitmapInfo(), dst.IsPremultiplied, out var nfo))
{
throw new Diagnostics.PixelFormatNotSupportedException((dst.GetBitmapInfo().Format, dst.Premultiplied), nameof(dst));
}
var ptr = dst.LockPixels();
if (ptr == IntPtr.Zero)
{
throw new ArgumentNullException("lock", nameof(dst));
}
try { new PointerBitmap(ptr, nfo).AsSpanBitmap().SetPixels(0, 0, src); }
finally { dst.UnlockPixels(); }
}
public static bool CopyTo(ANDROIDBITMAP src, ref MemoryBitmap dst)
{
var info = src.GetBitmapInfo().ToInterop();
var ptr = src.LockPixels();
try { return(new PointerBitmap(ptr, info).CopyTo(ref dst)); }
finally { src.UnlockPixels(); }
}
public static void Mutate(ANDROIDBITMAP bmp, Action <PointerBitmap> pinContext)
{
System.Diagnostics.Debug.Assert(bmp != null);
if (!TryGetBitmapInfo(bmp.GetBitmapInfo(), bmp.IsPremultiplied, out var info))
{
throw new Diagnostics.PixelFormatNotSupportedException(bmp.GetBitmapInfo(), nameof(bmp));
}
if (info.BitmapByteSize != bmp.ByteCount)
{
throw new InvalidOperationException("Byte Size mismatch");
}
var ptr = bmp.LockPixels();
try { pinContext(new PointerBitmap(ptr, info, !bmp.IsMutable)); }
finally { bmp.UnlockPixels(); }
}
public static Bitmap RotateBitmap(Bitmap source, float angle)
{
Matrix matrix = new Matrix ();
matrix.SetRotate (angle);
return Bitmap.CreateBitmap (source, 0, 0, (int)source.GetBitmapInfo ().Width, (int)source.GetBitmapInfo ().Height, matrix, true);
}