Struct FontFeatureState

pub struct FontFeatureState(/* private fields */);

State of a font feature.

Implementations

impl FontFeatureState

pub const fn auto() -> FontFeatureState

Automatic state.

pub const fn enabled() -> FontFeatureState

Enabled state.

pub const fn enabled_alt(alt: NonZero<u32>) -> FontFeatureState

Enabled state with alternative selected.

pub const fn disabled() -> FontFeatureState

Disabled state.

pub fn is_auto(self) -> bool

Is auto.

pub fn is_enabled(self) -> bool

Is enabled or enabled_alt.

pub fn is_disabled(self) -> bool

Is disabled.

pub fn alt(self) -> Option<u32>

Gets the enabled alternative.

Trait Implementations

impl Clone for FontFeatureState

fn clone(&self) -> FontFeatureState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FontFeatureState

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

Formats the value using the given formatter.

impl Default for FontFeatureState

fn default() -> FontFeatureState

Returns the “default value” for a type.

impl From<bool> for FontFeatureState

fn from(enabled: bool) -> FontFeatureState

Converts to this type from the input type.

impl From<u32> for FontFeatureState

fn from(alt: u32) -> FontFeatureState

0 is disabled, >=1 is enabled with the alt value.

impl Hash for FontFeatureState

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

where __H: Hasher,

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 IntoVar<FontFeatureState> for bool

type Var = LocalVar<FontFeatureState>

Variable type that will wrap the T value.

fn into_var(self) -> <bool as IntoVar<FontFeatureState>>::Var

Converts the source value into a var.

fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>

where Self: Sized,

Converts into BoxedVar<T>.

impl IntoVar<FontFeatureState> for u32

fn into_var(self) -> <u32 as IntoVar<FontFeatureState>>::Var

0 is disabled, >=1 is enabled with the alt value.

type Var = LocalVar<FontFeatureState>

Variable type that will wrap the T value.

fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>

where Self: Sized,

Converts into BoxedVar<T>.

impl PartialEq for FontFeatureState

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

impl Eq for FontFeatureState

impl IntoValue<FontFeatureState> for bool

impl IntoValue<FontFeatureState> for u32

impl StructuralPartialEq for FontFeatureState