public CGImage AsCGImage(IntPtr proposedDestRectPtr, NSGraphicsContext context, NSDictionary hints)
{
var proposedDestRect = Marshal.PtrToStructure <CGRect>(proposedDestRectPtr);
var result = Rep.AsCGImage(ref proposedDestRect, context, hints);
Marshal.StructureToPtr(proposedDestRect, proposedDestRectPtr, false);
return(result);
}
public override object CropBitmap(object backend, int srcX, int srcY, int width, int height)
{
NSImage img = (NSImage)backend;
NSBitmapImageRep bitmap = img.Representations().OfType <NSBitmapImageRep> ().FirstOrDefault();
if (bitmap != null)
{
var empty = CGRect.Empty;
var cgi = bitmap.AsCGImage(ref empty, null, null).WithImageInRect(new CGRect(srcX, srcY, width, height));
NSImage res = new NSImage(cgi, new CGSize(width, height));
cgi.Dispose();
return(res);
}
else
{
throw new InvalidOperationException("Not a bitmap image");
}
}
public override CGImage AsCGImage(ref CGRect proposedDestRect, NSGraphicsContext context, NSDictionary hints)
{
return(Rep.AsCGImage(ref proposedDestRect, context, hints));
}
