private static unsafe MouseCursor PlatformFromPixels(
IReadOnlyPixelMemory <Color> data, int width, int height, Point origin)
{
var surface = IntPtr.Zero;
var handle = IntPtr.Zero;
try
{
fixed(Color *ptr = data.GetPixelSpan())
{
surface = SDL.CreateRGBSurfaceFrom(
(IntPtr)ptr, width, height, 32, data.ByteStride,
0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
}
if (surface == IntPtr.Zero)
{
throw new InvalidOperationException(
"Failed to create surface for mouse cursor.", new Exception(SDL.GetError()));
}
handle = SDL.Mouse.CreateColorCursor(surface, origin.X, origin.Y);
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException(
"Failed to create mouse cursor from surface.", new Exception(SDL.GetError()));
}
}
finally
{
if (surface != IntPtr.Zero)
{
SDL.FreeSurface(surface);
}
}
return(new MouseCursor(handle));
}
