Struct FontFeatureTag 

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

An OpenType font feature tag.

Implementations

impl FontFeatureTag

pub const STANDARD_LIGATURES: FontFeatureTag

Replaces character combinations like fi, fl with ligatures.

pub const CONTEXTUAL_LIGATURES: FontFeatureTag

Enables ligatures based on character context.

pub const DISCRETIONARY_LIGATURES: FontFeatureTag

Enables optional ligatures for stylistic use (e.g., ct, st).

pub const CONTEXTUAL_ALTERNATES: FontFeatureTag

Adjust glyph shapes based on surrounding letters.

pub const STYLISTIC_ALTERNATES: FontFeatureTag

Use alternate glyph designs.

pub const SMALL_CAPS: FontFeatureTag

Replaces lowercase letters with small caps.

pub const CAPS_TO_SMALL_CAPS: FontFeatureTag

Replaces uppercase letters with small caps.

pub const SWASH: FontFeatureTag

Replaces characters with swash versions (often decorative).

pub const TITLING_ALTERNATES: FontFeatureTag

Enables alternate glyphs for large sizes or titles.

pub const FRACTIONS: FontFeatureTag

Converts numbers like 1/2 into true fractions (½).

pub const ORDINALS: FontFeatureTag

Formats characters like 1st, 2nd properly.

pub const SLASHED_ZERO: FontFeatureTag

Uses a slashed version of zero (0) to differentiate from O.

pub const SUPERSCRIPT: FontFeatureTag

Replaces figures with superscript figures, e.g. for indicating footnotes.

pub const SUBSCRIPT: FontFeatureTag

Replaces figures with subscript figures.

pub const OLDSTYLE_FIGURES: FontFeatureTag

Changes numbers to “oldstyle” form, which fit better in the flow of sentences or other text.

pub const LINING_FIGURES: FontFeatureTag

Changes numbers to “lining” form, which are better suited for standalone numbers. When enabled, the bottom of all numbers will be aligned with each other.

pub const PROPORTIONAL_FIGURES: FontFeatureTag

Changes numbers to be of proportional width. When enabled, numbers may have varying widths.

pub const TABULAR_FIGURES: FontFeatureTag

Changes numbers to be of uniform (tabular) width. When enabled, all numbers will have the same width.

pub const WEIGHT: FontFeatureTag

Varies the stroke thickness. Values must be in the range of 0 to 1000.

pub const WIDTH: FontFeatureTag

Varies the width of text from narrower to wider. Must be a value greater than 0. A value of 100 is typically considered standard width.

pub const SLANT: FontFeatureTag

Varies between upright and slanted text. Must be a value greater than -90 and less than +90. A value of 0 is upright.

pub const fn new(src: &[u8; 4]) -> FontFeatureTag

Create a new FontFeatureTag from raw bytes.

Trait Implementations

impl Clone for FontFeatureTag

fn clone(&self) -> FontFeatureTag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontFeatureTag

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

Formats the value using the given formatter.

impl FromReflect for FontFeatureTag

fn from_reflect( reflect: &(dyn PartialReflect + 'static), ) -> Option<FontFeatureTag>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl GetTypeRegistration for FontFeatureTag

fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.

fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type.

impl Hash for FontFeatureTag

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 Ord for FontFeatureTag

fn cmp(&self, other: &FontFeatureTag) -> 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 FontFeatureTag

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

fn partial_cmp(&self, other: &FontFeatureTag) -> 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 PartialReflect for FontFeatureTag

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value.

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<FontFeatureTag>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<FontFeatureTag>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>

Attempts to cast this type to a boxed, fully-reflected value.

fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>

Attempts to cast this type to a fully-reflected value.

fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>

Attempts to cast this type to a mutable, fully-reflected value.

fn into_partial_reflect(self: Box<FontFeatureTag>) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)

Casts this type to a mutable, reflected value.

fn reflect_partial_eq( &self, value: &(dyn PartialReflect + 'static), ) -> Option<bool>

Returns a “partial equality” comparison result.

fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>

Attempts to clone Self using reflection.

fn apply(&mut self, value: &(dyn PartialReflect + 'static))

Applies a reflected value to this value.

fn to_dynamic(&self) -> Box<dyn PartialReflect>

Converts this reflected value into its dynamic representation based on its kind.

fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>

where T: 'static, Self: Sized + TypePath,

For a type implementing PartialReflect, combines reflect_clone and take in a useful fashion, automatically constructing an appropriate ReflectCloneError if the downcast fails.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

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

Debug formatter for the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Reflect for FontFeatureTag

fn into_any(self: Box<FontFeatureTag>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<FontFeatureTag>) -> Box<dyn Reflect>

Casts this type to a boxed, fully-reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a fully-reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable, fully-reflected value.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

impl TupleStruct for FontFeatureTag

fn field(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn Reflect.

fn field_mut( &mut self, index: usize, ) -> Option<&mut (dyn PartialReflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.

fn field_len(&self) -> usize

Returns the number of fields in the tuple struct.

fn iter_fields(&self) -> TupleStructFieldIter<'_>

Returns an iterator over the values of the tuple struct’s fields.

fn to_dynamic_tuple_struct(&self) -> DynamicTupleStruct

Creates a new DynamicTupleStruct from this tuple struct.

fn get_represented_tuple_struct_info(&self) -> Option<&'static TupleStructInfo>

Will return None if TypeInfo is not available.

impl TypePath for FontFeatureTag

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous.

impl Typed for FontFeatureTag

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl Copy for FontFeatureTag

impl Eq for FontFeatureTag

impl StructuralPartialEq for FontFeatureTag