Enum PresentationUnavailableReason

#[non_exhaustive]
pub enum PresentationUnavailableReason {
    ZeroExtent,
    SurfaceLost,
    NoCompatibleSurface,
    HostUnavailable,
}

Reason a native presentation cannot currently be used.

The enum is non-exhaustive. It provides diagnosis only; recovery occurs by applying PresentationEvent::Retry or allowing creation again.

Examples

use ailloli_ui_runtime::app::PresentationUnavailableReason;
assert_ne!(PresentationUnavailableReason::ZeroExtent, PresentationUnavailableReason::SurfaceLost);

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ZeroExtent

Logical width or height was zero/non-positive for surface creation.

SurfaceLost

A previously usable rendering surface was lost.

NoCompatibleSurface

No surface/configuration compatible with the host was available.

HostUnavailable

The native presentation provider itself is unavailable.

Trait Implementations

impl Clone for PresentationUnavailableReason

fn clone(&self) -> PresentationUnavailableReason

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PresentationUnavailableReason

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

Formats the value using the given formatter.

impl PartialEq for PresentationUnavailableReason

fn eq(&self, other: &PresentationUnavailableReason) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for PresentationUnavailableReason

impl Eq for PresentationUnavailableReason

impl StructuralPartialEq for PresentationUnavailableReason