Enum DrawError 

#[non_exhaustive]
pub enum DrawError {
    EmptyCanvas,
    Undersized {
        width: u32,
        height: u32,
        stride: u32,
        needed: usize,
        got: usize,
    },
}

Why a decoration could not be drawn.

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.

EmptyCanvas

The canvas has no pixels.

A window mid-resize passes through zero, and refusing here is better than a loop that writes nothing and reports success — the caller would present an unpainted buffer believing it had been drawn.

Undersized

The canvas is smaller than its own stride says.

Fields

width: u32

Declared width.

height: u32

Declared height.

stride: u32

Declared stride.

needed: usize

What that implies.

got: usize

What was given.

Trait Implementations

impl Clone for DrawError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DrawError

impl Debug for DrawError

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

Formats the value using the given formatter.

impl Display for DrawError

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

Formats the value using the given formatter.

impl Eq for DrawError

impl Error for DrawError

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 DrawError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DrawError