Enum PopupPlacementError

#[non_exhaustive]
pub enum PopupPlacementError {
    InvalidAnchor,
    InvalidDesiredSize,
    InvalidViewport,
    EmptyViewport,
    InvalidGap,
    MissingAnchor,
    MissingDesiredSize,
    UnrepresentableGeometry,
}

Invalid geometry supplied to popup placement resolution.

Validation is deterministic and performs no platform calls. The enum is non-exhaustive so downstream matches require a wildcard arm.

Examples

use ailloli_ui_core::{Rect, Size};
use ailloli_ui_runtime::popup::{position_popup, PopupAlignment, PopupPlacement, PopupPlacementError};
assert_eq!(position_popup(Rect::new(0.0, 0.0, 0.0, 0.0), Size::new(-1.0, 2.0), PopupPlacement::Bottom, PopupAlignment::Center, 0.0), Err(PopupPlacementError::InvalidDesiredSize));

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.

InvalidAnchor

Anchor coordinate/size is non-finite or a dimension is negative.

InvalidDesiredSize

Desired width/height is non-finite or negative.

InvalidViewport

Viewport coordinate/size is non-finite or a dimension is negative.

EmptyViewport

Viewport width or height is exactly zero after basic validation.

InvalidGap

Gap is negative or non-finite.

MissingAnchor

A retained request was resolved before receiving an anchor.

MissingDesiredSize

A retained request was resolved before receiving desired size.

UnrepresentableGeometry

Finite inputs overflowed to non-finite positioned/clamped edges.

Trait Implementations

impl Clone for PopupPlacementError

fn clone(&self) -> PopupPlacementError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PopupPlacementError

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

Formats the value using the given formatter.

impl Display for PopupPlacementError

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

Formats the value using the given formatter.

impl Error for PopupPlacementError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for PopupPlacementError

fn eq(&self, other: &PopupPlacementError) -> 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 PopupPlacementError

impl Eq for PopupPlacementError

impl StructuralPartialEq for PopupPlacementError