Struct RankKey 

pub struct RankKey {
    pub deficit: u32,
    pub style: i32,
    pub italic: u8,
    pub dedication_inv: u64,
    pub breadth: u64,
    pub name: String,
}

The ordering used wherever font candidates compete. Smaller is better.

Fields

deficit: u32

Number of requested codepoints the font does not cover.

style: i32

Style score against the request (smaller is closer).

italic: u8

0 for upright, 1 for italic (prefers upright on ties).

dedication_inv: u64

How much of the font’s coverage lies outside the requested block (prefers dedicated fonts).

breadth: u64

Total codepoint coverage (prefers narrower fonts on ties).

name: String

Font name, for deterministic tie-breaking.

Implementations

impl RankKey

pub fn for_block( style: &FcPattern, candidate: &FcPattern, block: &UnicodeRange, ) -> Option<Self>

Rank candidate for characters of block under style. None when the candidate covers nothing of the block.

pub fn for_style(style: &FcPattern, candidate: &FcPattern) -> Self

Rank candidate based only on style. Narrower fonts win ties.

pub fn for_request( style: &FcPattern, candidate: &FcPattern, requested: &[UnicodeRange], ) -> Self

Rank candidate against a requested range set by style and missing coverage.

Trait Implementations

impl Clone for RankKey

fn clone(&self) -> RankKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RankKey

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

Formats the value using the given formatter.

impl Eq for RankKey

impl Ord for RankKey

fn cmp(&self, other: &RankKey) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for RankKey

fn eq(&self, other: &RankKey) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for RankKey

fn partial_cmp(&self, other: &RankKey) -> 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 StructuralPartialEq for RankKey