How to make a button effect clicked?

I have these two sprites, how can I swap so that the text inside the button follows the movement?


I got something similar to what I wanted using Mask and Animator, however, I was looking for a more idiomatic way to do it.

Problems I encountered while using Mask:
- Does not take alpha into consideration, causing the button to be jagged at the edges.


Problems I encountered using Animator:
- If the button comes for example from a MessageBox, and I disable and then enable again, the animation state is inaccurate.

I think if I knew the name of this type of button everything would be solved with a Google search.