Struct SurfaceTransition 

pub struct SurfaceTransition { /* private fields */ }

The one progress value a surface’s arrival and departure share: 0 is off its edge and transparent, 1 is settled. Opening runs it to 1; leave runs it back to 0, so the exit is the entrance reversed rather than a second animation that has to be kept in step with the first.

A backend that can hold a closing surface on screen for duration is what makes the exit half visible; one that cannot simply never calls leave, and the surface disappears as it always did.

Implementations

impl SurfaceTransition

pub fn enter() -> Self

A transition already on its way in. Constructed away from its goal and retargeted at once, never at it: an Animated born settled registers with no ticker, so nothing would schedule the frames that carry it in.

pub fn leave(&self)

Sends the surface back the way it came. The caller is responsible for keeping it on screen for duration — otherwise this animates a surface that has already been torn down.

pub fn duration(&self) -> Duration

How long either half takes, and therefore how long a closing surface has to stay mapped.

Trait Implementations

impl Clone for SurfaceTransition

fn clone(&self) -> SurfaceTransition

Returns a duplicate of the value.

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

Performs copy-assignment from source.