Struct ScrollHandle 

pub struct ScrollHandle { /* private fields */ }

A lightweight imperative handle for driving scroll state.

This is intentionally small and allocation-free to clone, so component-layer code can store it and pass it back into declarative elements each frame.

Implementations

impl ScrollHandle

pub fn offset(&self) -> Point

pub fn revision(&self) -> u64

Monotonic revision counter that increments when the scroll offset changes via ScrollHandle::set_offset (or helpers that call it).

The declarative runtime uses this to detect out-of-band scroll changes (e.g. component-driven “scroll into view”) and invalidate the bound scroll nodes, even when the element instances themselves did not change.

pub fn max_offset(&self) -> Point

pub fn clamp_offset(&self, offset: Point) -> Point

pub fn set_offset(&self, offset: Point)

pub fn scroll_to_offset(&self, offset: Point)

pub fn viewport_size(&self) -> Size

pub fn set_viewport_size(&self, viewport: Size)

pub fn content_size(&self) -> Size

pub fn set_content_size(&self, content: Size)

pub fn scroll_to_range_y( &self, start_y: Px, end_y: Px, strategy: ScrollStrategy, )

Trait Implementations

impl Clone for ScrollHandle

fn clone(&self) -> ScrollHandle

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScrollHandle

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ScrollHandle

fn default() -> ScrollHandle

Returns the “default value” for a type.