Struct FontFamily 

pub struct FontFamily {
    pub regular: Font,
    pub bold: Font,
    pub italic: Font,
    pub bold_italic: Font,
    pub monospace: Font,
    pub fallbacks: &'static [EmbeddedFontId],
}

A four-cut family: Regular, Bold, Italic, BoldItalic. The layout engine picks one slot per styled run (*emphasis* → italic, **strong** → bold, raw → fixed-width family, body → regular).

Build via FontFamily::resolve, which understands Base14 family names and the bundled "Noto Sans" family. Unknown names fall back to Noto Sans and emit a MOS0018 diagnostic.

Examples

use mos_fonts::{Font, FontFamily, EmbeddedFontId};

let family = FontFamily::noto_sans();

assert_eq!(family.regular, Font::Embedded(EmbeddedFontId::Regular));

Fields

regular: Font

Default upright face. Used for body text.

bold: Font

Bold face. Used for **strong** and headings.

italic: Font

Italic / oblique face. Used for *emphasis*.

bold_italic: Font

Bold italic face. Used for ***bold italic*** constructs.

monospace: Font

Monospace face. Used for `raw` runs. The four-slot family concept is upright/styled-Latin; raw is its own typeface choice that the layout engine pins independently of the family.

fallbacks: &'static [EmbeddedFontId]

Per-glyph fallback chain shared by every style slot in this family. When shaping against any of the style-slot faces above yields .notdef for some cluster, crate::shape_with_fallback retries that cluster against each embedded face in this slice in order. The first face to cover the cluster wins the whole cluster (cluster-granular replacement). Math fallback is therefore upright even inside bold or italic text until style-aware fallback chains exist. Empty chain = primary-only shaping (Base14 families don’t have an embedded fallback target).

Implementations

impl FontFamily

pub const fn noto_sans() -> Self

The bundled Noto Sans family: embedded TTFs, real designed cuts for every style slot (no faux-bold or faux-italic). Raw runs route through the bundled Noto Sans Mono Regular cut so `Привет` and other non-WinAnsi raw content shape through the same rustybuzz + /ToUnicode pipeline as body text instead of dropping to the Base14 ? substitution.

Per-glyph fallback chain: [Math]. Codepoints not in Noto Sans (math operators like ≤ ≥ √ ∂ ∑ ∆ ◊) shape against the bundled Noto Sans Math cut.

Examples

use mos_fonts::{EmbeddedFontId, Font, FontFamily};

let family = FontFamily::noto_sans();

assert_eq!(family.monospace, Font::Embedded(EmbeddedFontId::Mono));

pub const fn helvetica() -> Self

The Base14 Helvetica family. Used when the document explicitly asks for Helvetica. Falls back through Courier for raw.

Base14 has no per-glyph fallback target; the byte-encoded content stream path can’t splice in glyph IDs from a sibling face. Non-WinAnsi codepoints silently substitute to ? in mos-pdf::encode_base14_run.

Examples

use mos_fonts::{Base14Font, Font, FontFamily};

let family = FontFamily::helvetica();

assert_eq!(family.regular, Font::Base14(Base14Font::Helvetica));

pub const fn times() -> Self

The Base14 Times Roman family. Used when the document asks for Times or Times-Roman. No per-glyph fallback: see Self::helvetica.

Examples

use mos_fonts::{Base14Font, Font, FontFamily};

let family = FontFamily::times();

assert_eq!(family.bold, Font::Base14(Base14Font::TimesBold));

pub const fn courier() -> Self

The Base14 Courier family. Used when the document asks for Courier as the body face. All four style slots route to a Courier cut. No per-glyph fallback; see Self::helvetica.

Examples

use mos_fonts::{Base14Font, Font, FontFamily};

let family = FontFamily::courier();

assert_eq!(family.italic, Font::Base14(Base14Font::CourierOblique));

pub fn resolve( name: &str, span: Option<SourceSpan>, diagnostics: &mut Vec<Diagnostic>, ) -> Self

Resolve a #set text(font: ...) name to a family.

Matching is case-insensitive on the family component. Known names: Helvetica, Times/Times-Roman/Times Roman, Courier, Noto Sans. Anything else falls back to Noto Sans and pushes a MOS0018 notice so users don’t silently get the wrong typeface.

Examples

use mos_fonts::{Base14Font, Font, FontFamily};

let mut diagnostics = Vec::new();
let family = FontFamily::resolve("Times", None, &mut diagnostics);

assert_eq!(family.regular, Font::Base14(Base14Font::TimesRoman));
assert!(diagnostics.is_empty());

Trait Implementations

impl Clone for FontFamily

fn clone(&self) -> FontFamily

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontFamily

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

Formats the value using the given formatter.

impl Hash for FontFamily

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 FontFamily

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

impl Eq for FontFamily

impl StructuralPartialEq for FontFamily