Struct UniformListScrollHandle 

pub struct UniformListScrollHandle(pub Rc<RefCell<UniformListScrollState>>);

A handle for controlling the scroll position of a uniform list. This should be stored in your view and passed to the uniform_list on each frame.

Tuple Fields

0: Rc<RefCell<UniformListScrollState>>

Implementations

impl UniformListScrollHandle

pub fn new() -> Self

Create a new scroll handle to bind to a uniform list.

pub fn scroll_to_item(&self, ix: usize, strategy: ScrollStrategy)

Scroll the list so that the given item index is visible.

This uses non-strict scrolling: if the item is already fully visible, no scrolling occurs. If the item is out of view, it scrolls the minimum amount to bring it into view according to the strategy.

pub fn scroll_to_item_strict(&self, ix: usize, strategy: ScrollStrategy)

Scroll the list so that the given item index is at scroll strategy position.

This uses strict scrolling: the item will always be scrolled to match the strategy position, even if it’s already visible. Use this when you need precise positioning.

pub fn scroll_to_item_with_offset( &self, ix: usize, strategy: ScrollStrategy, offset: usize, )

Scroll the list to the given item index with an offset in number of items.

This uses non-strict scrolling: if the item is already visible within the offset region, no scrolling occurs.

The offset parameter shrinks the effective viewport by the specified number of items from the corresponding edge, then applies the scroll strategy within that reduced viewport:

• ScrollStrategy::Top: Shrinks from top, positions item at the new top
• ScrollStrategy::Center: Shrinks from top, centers item in the reduced viewport
• ScrollStrategy::Bottom: Shrinks from bottom, positions item at the new bottom

pub fn scroll_to_item_strict_with_offset( &self, ix: usize, strategy: ScrollStrategy, offset: usize, )

Scroll the list so that the given item index is at the exact scroll strategy position with an offset.

This uses strict scrolling: the item will always be scrolled to match the strategy position, even if it’s already visible.

The offset parameter shrinks the effective viewport by the specified number of items from the corresponding edge, then applies the scroll strategy within that reduced viewport:

• ScrollStrategy::Top: Shrinks from top, positions item at the new top
• ScrollStrategy::Center: Shrinks from top, centers item in the reduced viewport
• ScrollStrategy::Bottom: Shrinks from bottom, positions item at the new bottom

pub fn y_flipped(&self) -> bool

Check if the list is flipped vertically.

pub fn is_scrollable(&self) -> bool

Checks if the list can be scrolled vertically.

pub fn scroll_to_bottom(&self)

Scroll to the bottom of the list.

Trait Implementations

impl Clone for UniformListScrollHandle

fn clone(&self) -> UniformListScrollHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UniformListScrollHandle

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

Formats the value using the given formatter.

impl Default for UniformListScrollHandle

fn default() -> UniformListScrollHandle

Returns the “default value” for a type.