Struct Presence 

pub struct Presence {
    pub id: WidgetId,
    pub visible: bool,
    pub keep_rendered: bool,
    pub enter: Vec<MotionTrack>,
    pub exit: Vec<MotionTrack>,
    pub child: Widget,
    pub clip_to_bounds: bool,
    pub repaint_boundary: bool,
    pub inert_while_exiting: bool,
}

Presence wrapper that keeps a child mounted while enter/exit tracks run.

Use this when a widget must animate out after its visible state becomes false. If both enter and exit tracks are empty, presence changes are applied immediately.

use fission::motion::{fade, Presence};
use fission::{Text, WidgetId};

let widget = Presence {
    id: WidgetId::explicit("details_panel"),
    visible: state.show_details,
    enter: fade(),
    exit: fission::motion::reverse_tracks_for_exit(&fade()),
    child: Text::new("Details").into(),
    ..Default::default()
};

Fields

id: WidgetId

Stable identity for the presence slot.

visible: bool

Whether the child is logically visible in the current build.

keep_rendered: bool

Whether to keep rendering the child after exit completes.

enter: Vec<MotionTrack>

Tracks used when entering.

exit: Vec<MotionTrack>

Tracks used when exiting.

child: Widget

Child controlled by this presence wrapper.

clip_to_bounds: bool

Whether to clip visual overflow during presence motion.

repaint_boundary: bool

Whether shells should treat this as a repaint/composite boundary.

inert_while_exiting: bool

Whether shells should suppress interaction while the child exits.

Trait Implementations

impl Clone for Presence

fn clone(&self) -> Presence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Presence

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

Formats the value using the given formatter.

impl Default for Presence

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Presence

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Presence> for Widget

fn from(component: Presence) -> Self

Converts to this type from the input type.

impl Serialize for Presence

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.