Enum ImageError 

pub enum ImageError {
    Unreadable {
        path: PathBuf,
        source: Error,
    },
    Undecodable {
        path: PathBuf,
        source: ImageError,
    },
    TooLarge {
        path: PathBuf,
        width: u32,
        height: u32,
    },
}

Why a picture could not be shown.

Variants

Unreadable

The file could not be read at all: gone, or not permitted.

Fields

path: PathBuf

source: Error

Undecodable

The file is there and readable, and is not a picture this build can decode — a format nobody enabled, or bytes that are not an image at all.

Distinct from ImageError::Unreadable because the two need different sentences: one is “this file is missing”, the other is “this file is not something I can open”, and a viewer that says the first about the second sends the user looking for a problem with their disk.

Fields

path: PathBuf

source: ImageError

TooLarge

The header parsed and claims dimensions past what may be decoded at all — see crate::budget.

Its own case rather than an Undecodable, because nothing is wrong with the file: this is a refusal, and it is the one failure here that a bigger machine would not have.

Fields

path: PathBuf

width: u32

height: u32

Implementations

impl ImageError

pub fn path(&self) -> &Path

The file this is about, for a message that names it.

Trait Implementations

impl Debug for ImageError

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

Formats the value using the given formatter.

impl Display for ImageError

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

Formats the value using the given formatter.

impl Error for ImageError

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.