Function cursive_core::view::scroll::required_size

pub fn required_size<T, RequiredSize>(
    scroller: &mut T,
    size: Vec2,
    needs_relayout: bool,
    required_size: RequiredSize
) -> Vec2where
    T: Scroller,
    RequiredSize: FnMut(&mut T, Vec2) -> Vec2,

Performs View::required_size on a scroll::Scroller.