Enum Appearance 

pub enum Appearance {
    Owned(Appearing),
    Shared(Rc<Cell<Appearing>>),
}

One Appearing a surface and the host that draws it share.

A dialog belongs to the tree its app builds, and an app builds a new tree whenever its state changes: a dialog built open would arrive again on every rebuild, so it is built at rest instead — and then it never arrives at all. A host that builds the app’s tree per state hands every rebuild the same handle (Self::shared), so the surface arrives once, leaves once, and reverses from where it is drawn like any other motion.

Variants

Owned(Appearing)

The surface keeps its own: built open, it is drawn at rest from its first paint.

Shared(Rc<Cell<Appearing>>)

Kept by the host that rebuilds the surface’s tree.

Implementations

impl Appearance

pub fn shared() -> Appearance

An appearance a host shares with every rebuild of a surface it draws, starting closed: the first paint of a surface built open arrives.

pub const fn is_owned(&self) -> bool

Whether the surface keeps this appearance itself: one built open is drawn at rest, since a rebuild would otherwise replay its arrival.

pub fn follow(&mut self, open: bool, motion: EffectiveMotion)

Appearing::follow.

pub fn follow_from( &mut self, open: bool, motion: EffectiveMotion, source: MotionSource, )

Appearing::follow_from.

pub fn show(&mut self, open: bool)

Appearing::show.

pub fn show_from(&mut self, open: bool, source: MotionSource)

Appearing::show_from.

pub fn snap(&mut self, open: bool)

Appearing::snap.

pub fn is_open(&self) -> bool

Appearing::is_open.

pub fn is_drawn(&self) -> bool

Appearing::is_drawn.

pub fn is_moving(&self) -> bool

Appearing::is_moving.

pub fn progress(&self) -> f64

Appearing::progress.

pub fn pose(&self, surface: Rect, anchor: Point) -> Pose

Appearing::pose.

Trait Implementations

impl Clone for Appearance

fn clone(&self) -> Appearance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Appearance

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

Formats the value using the given formatter.

impl Default for Appearance

fn default() -> Appearance

Returns the “default value” for a type.