Struct SwipeableState 

pub struct SwipeableState<T: Clone + PartialEq + 'static> { /* private fields */ }

A generic swipeable state that tracks an animated offset and snaps to the nearest anchor point on release.

Type Parameters

• T - The anchor value type (e.g. DismissValue, usize for pager pages).

Usage

use repose_core::*;

let state = SwipeableState::new(
    vec![(0.0, "start"), (-200.0, "end")],
    SwipeableConfig::default(),
);

// Wire pointer events using on_pointer_down/move/up modifier callbacks:
// state.on_pointer_down(e.position.x)
// state.on_pointer_move(e.position.x)
// state.on_pointer_up()

// Read offset each frame:
let offset = state.offset();

Implementations

impl<T: Clone + PartialEq + 'static> SwipeableState<T>

pub fn new(anchors: Vec<(f32, T)>, config: SwipeableConfig) -> Self

Create a new swipeable state.

anchors - pairs of (offset_px, value) sorted by offset. The first anchor is the initial position. At least one anchor is required.

pub fn offset(&self) -> f32

Current animated offset in pixels. Call every frame that needs the value. Requests a re-draw while the spring is still running.

pub fn current_value(&self) -> T

Resolve the nearest anchor value from the current offset.

pub fn snap_to(&self, off: f32)

Snap to an absolute offset instantly (used during active drag).

pub fn animate_to(&self, value: &T)

Animate to the offset corresponding to a target value.

pub fn is_animating(&self) -> bool

Returns true if the spring is still running.

pub fn on_pointer_down(&self, axis_pos: f32)

Call from on_pointer_down with the position along the drag axis.

pub fn on_pointer_move(&self, axis_pos: f32)

Call from on_pointer_move with the position along the drag axis.

pub fn on_pointer_up(&self)

Call from on_pointer_up. Snaps to the appropriate anchor based on position and velocity.

Trait Implementations

impl<T: Clone + PartialEq + 'static> Clone for SwipeableState<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.