fromPointer static method
Implementation
static Rect? fromPointer(ffi.Pointer<ffi.Void> ptr,
    {core.bool needFree = true}) {
  if (ptr == ffi.nullptr) {
    return null;
  }
  final result = RectImpl.fromNative(ptr.cast<RectNative>().ref);
  if (needFree) {
    malloc.free(ptr);
  }
  return result;
}