Struct FontFeature 

pub struct FontFeature {
    pub tag: String,
    pub value: u32,
}

An OpenType feature tag toggle, e.g. "liga" on, "tnum" on.

tag is the 4-byte OpenType feature tag; value is the feature selector (0 = off, 1 = on, or a stylistic-set index).

Fields

tag: String

The 4-character OpenType feature tag (e.g. "liga", "smcp", "ss01").

value: u32

The feature value (0 = off, 1 = on, or an index for alternates).

Implementations

impl FontFeature

pub fn on(tag: impl Into<String>) -> Self

Enable a feature (value 1).

pub fn off(tag: impl Into<String>) -> Self

Disable a feature (value 0).

pub fn value(tag: impl Into<String>, value: u32) -> Self

A feature with an explicit selector value.

Trait Implementations

impl Clone for FontFeature

fn clone(&self) -> FontFeature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontFeature

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

Formats the value using the given formatter.

impl Hash for FontFeature

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 PartialEq for FontFeature

fn eq(&self, other: &FontFeature) -> 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 Eq for FontFeature

impl StructuralPartialEq for FontFeature