Enum FontLoadingError 

#[non_exhaustive]
pub enum FontLoadingError {
    UnknownFormat,
    NoSuchFontInCollection,
    Parse(FaceParsingError),
    NoFilesystem,
    Io(Arc<Error>),
}

Reasons why a loader might fail to load a font.

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.

UnknownFormat

The data was of a format the loader didn’t recognize.

NoSuchFontInCollection

Attempted to load an invalid index in a TrueType or OpenType font collection.

For example, if a .ttc file has 2 fonts in it, and you ask for the 5th one, you’ll get this error.

Parse(FaceParsingError)

Attempted to load a malformed or corrupted font.

NoFilesystem

Attempted to load a font from the filesystem, but there is no filesystem (e.g. in WebAssembly).

Io(Arc<Error>)

A disk or similar I/O error occurred while attempting to load the font.

Trait Implementations

impl Clone for FontLoadingError

fn clone(&self) -> FontLoadingError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontLoadingError

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

Formats the value using the given formatter.

impl Display for FontLoadingError

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

Formats the value using the given formatter.

impl Error for FontLoadingError

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

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

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 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 From<Error> for FontLoadingError

fn from(error: Error) -> FontLoadingError

Converts to this type from the input type.

impl From<FontLoadingError> for FontLoadingError

fn from(ve: FontLoadingError) -> Self

Converts to this type from the input type.

impl PartialEq for FontLoadingError

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