scrollable snap for visible item

[oknozor]

Hello, I am trying to implement the following scroll behaviour :
I have a scrollable widget containing rows wich look like this :

I'd like it to auto scroll so the last selected element is always visible (the user is updating the selection using arrow keys).

I am not sure if that is possible with the snap_to function since I need to be able to get the height of the visible part of the scrollable widget to calculate an offset and the widow is resizable.

Is there a way to get the current height of a widget ?

[yusdacra]

I think you should be able to calculate the offset by keeping which item is focused (from the top), how many items are in the scrollable, then calculate the offset using (1.0 / total_items) * current_item.