Trait NestedScrollConnection 

pub trait NestedScrollConnection {
    // Provided methods
    fn on_pre_scroll(
        &self,
        _axis: ScrollAxis,
        _available: f32,
        _source: NestedScrollSource,
    ) -> f32 { ... }
    fn on_post_scroll(
        &self,
        _axis: ScrollAxis,
        _consumed: f32,
        _available: f32,
        _source: NestedScrollSource,
    ) -> f32 { ... }
    fn on_pre_fling(&self, _axis: ScrollAxis, _velocity: f32) -> f32 { ... }
}

A container’s part in the scrolls inside it.

Amounts follow the content: a positive amount moves the content toward the end of the axis, as a finger dragging down or right does, so a list at its top that is dragged further down has a positive amount left over. Each method returns the part it consumed, of the same sign.

Provided Methods

fn on_pre_scroll( &self, _axis: ScrollAxis, _available: f32, _source: NestedScrollSource, ) -> f32

Takes part of available before the scroller moves.

fn on_post_scroll( &self, _axis: ScrollAxis, _consumed: f32, _available: f32, _source: NestedScrollSource, ) -> f32

Takes part of available, what the scroller left after it consumed consumed.

fn on_pre_fling(&self, _axis: ScrollAxis, _velocity: f32) -> f32

Takes part of the velocity a drag ended with, in content units per second, before the scroller flings with the rest.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors