Trait FontMatchDistanceMethod

trait FontMatchDistanceMethod: Sized {
    // Required methods
    fn match_distance(&self, range: &(Self, Self)) -> f32;
    fn to_float(&self) -> f32;
}

A trait for implementing the CSS font matching algorithm against various font features. See https://drafts.csswg.org/css-fonts/#font-matching-algorithm.

This implementation is ported from Gecko at: https://searchfox.org/mozilla-central/rev/0529464f0d2981347ef581f7521ace8b7af7f7ac/gfx/thebes/gfxFontUtils.h#1217.

Required Methods

fn match_distance(&self, range: &(Self, Self)) -> f32

fn to_float(&self) -> f32

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FontMatchDistanceMethod for T

fn match_distance(&self, range: &(Self, Self)) -> f32

fn to_float(&self) -> f32

impl FontMatchDistanceMethod for T

fn match_distance(&self, range: &(Self, Self)) -> f32

fn to_float(&self) -> f32

impl FontMatchDistanceMethod for FontWeight

fn match_distance(&self, range: &(Self, Self)) -> f32

fn to_float(&self) -> f32

Implementors