Enum CoverageLevel

#[non_exhaustive]
pub enum CoverageLevel {
    None,
    Fallback,
    Approximate,
    Exact,
}

CoverageLevel is used to indicate how well a font can represent a particular Unicode character for a particular script.

Since 1.44, only None and Exact will be returned.

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.

None

The character is not representable with the font.

Fallback

The character is represented in a way that may be comprehensible but is not the correct graphical form. For instance, a Hangul character represented as a a sequence of Jamos, or a Latin transliteration of a Cyrillic word.

Approximate

The character is represented as basically the correct graphical form, but with a stylistic variant inappropriate for the current script.

Exact

The character is represented as the correct graphical form.

Trait Implementations

impl Clone for CoverageLevel

fn clone(&self) -> CoverageLevel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CoverageLevel

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

Formats the value using the given formatter.

impl From<CoverageLevel> for Value

fn from(v: CoverageLevel) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for CoverageLevel

type Checker = GenericValueTypeChecker<CoverageLevel>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl HasParamSpec for CoverageLevel

type ParamSpec = ParamSpecEnum

type SetValue = CoverageLevel

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str, _: CoverageLevel) -> ParamSpecEnumBuilder<'_, CoverageLevel>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for CoverageLevel

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CoverageLevel

fn cmp(&self, other: &CoverageLevel) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for CoverageLevel

fn eq(&self, other: &CoverageLevel) -> 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 PartialOrd for CoverageLevel

fn partial_cmp(&self, other: &CoverageLevel) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for CoverageLevel

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for CoverageLevel

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifier of self.

impl ValueType for CoverageLevel

type Type = CoverageLevel

Type to get the Type from.

impl Copy for CoverageLevel

impl Eq for CoverageLevel

impl StructuralPartialEq for CoverageLevel