Incular Docs

Shared-handle coordination for nested headers and bodies:

use incular::prelude::*;

fn main() {
    let injector = SliverOverlapInjector::new();
    println!("overlap: {}", injector.overlap_extent());
    let app = Application::new(|_cx| {
        Container::builder()
            .padding(EdgeInsets::all(24.0))
            .alignment(Alignment::CENTER)
            .child(
                CustomScrollView::new(vec![
                    Box::new(SliverOverlapAbsorber::new(
                        SliverToBoxAdapter::new(Text::new("Header")),
                    )) as Box<dyn Sliver>,
                    Box::new(SliverOverlapInjector::new()) as Box<dyn Sliver>,
                ]),
            )
            .build()
            .into()
    })
    .expect("valid application");
    incular::run(app).expect("run application");
}

The absorber consumes overlap in the outer viewport; the injector re-applies it in the inner one, keeping pinned headers aligned.

Type	Role
`SliverOverlapHandle`	Shared coordination token
`SliverOverlapAbsorber`	Consumes overlap upstream
`SliverOverlapInjector`	Re-applies overlap downstream

Related: CustomScrollView.

Sliver Overlap