Struct TransitionState 

pub struct TransitionState<T> { /* private fields */ }

Caller-owned state for one target-value transition, independent of mounting.

Keyed state lives only while its element renders, so a virtualized row that scrolls out and back restarts at its target. Keep a TransitionState with the row’s data instead and sample it while rendering:

let opacity = row.highlight.sample(target, policy, window, cx).value;

Clones share its clock and interruption/reversal history. The first sample adopts its target immediately; later samples use the same algorithm as transition_with_status. No view or window is retained. A new handle resets it.

Implementations

impl<T: Interpolate + PartialEq + 'static> TransitionState<T>

pub fn sample( &self, target: T, policy: Transition, window: &mut Window, cx: &mut App, ) -> MotionValue<T>

Returns the current value toward target, as transition_with_status does, and requests the next animation frame while the status is Delayed or Running.

Call this while rendering an element. A target that changes while the element is not rendered starts transitioning at the next sample.

Trait Implementations

impl<T: Clone> Clone for TransitionState<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Default for TransitionState<T>

fn default() -> Self

Returns the “default value” for a type.