Different axis move depending on image orientation (landscape/portrait)

[bichonnages]

Hi
Quick question:
Would it possible to change/block the axis move depending on image orientation?
To be more precise, I'd like to:
— allow the horizontal axis move/block the vertical axis move for landscape images (the image height would be the viewport height)
— allow the vertical axis move/block the horizontal axis move on portrait image (the image width would be the viewport width).