Add offset for picture.

[nullsafety]

My question is similar to #4 but I need to solve it by adjusting the offset for a picture, not by removing the offset of an overlay. Is this possible?

It might look something like this:

[nullsafety]

Any ideas or suggestions? I need it because I should implement functionality where user can crop vertical picture and they can put whole height or width of picture inside the crop area (if aspect ratio of picture not the same as crop area) but I should use static way for the crop border and dynamic picture under it.