Why does overlay::Element contains a position field?

[luandknguyen]

I do not know much about how iced work internally. Why does overlay::Element contains a position field? Shouldn't it make more sense for the Overlay trait to have a member function returning that information instead? Something like fn position(&self), similar to the width() and height() functions of the Widget trait.

When I first implemented an overlay, I thought it is similar to the Widget trait. So I implemented the From trait for my overlay to easily convert it into an overlay::Element. Apparently this is not how you do it.