Enum FontFamily 

pub enum FontFamily {
    Serif,
    SansSerif,
    Monospace,
    Cursive,
}

The face a run is set in — CSS’s generic families, less fantasy and system-ui, neither of which an author asks for.

A generic, never a font name, for SizeStep’s reason: a document that names Georgia renders in the fallback everywhere Georgia is not installed, which is every Linux terminal and most of the web. The theme names the concrete face for each — Serif is Georgia on a Mac and Noto Serif on a Linux box, and Monospace is the theme’s mono face, which inline code already uses.

A named family is not in this vocabulary: from_attr answers None for it, and it is FontFace::Named’s to read — the open type beside this one, which the toolbar offers under the four generics.

Variants

Serif

SansSerif

Monospace

Cursive

Implementations

impl FontFamily

pub const ALL: [Self; 4]

Every face, in the order a menu offers them. The theme’s own body face is absent because it is absence — the menu entry for it calls crate::Doc::set_font_family with None.

pub fn from_attrs(attrs: &[(String, Option<String>)]) -> Option<Self>

The face a run’s or block’s attributes name, if any — twig records it under data-font.

pub fn from_attr(value: &str) -> Option<Self>

Read a data-font value. None for a concrete family name, which is FontFace::Named’s to read; FontFace::from_attr is the door that reads both.

The four generics are matched without regard to case, because they are CSS keywords and CSS reads a keyword either way — a hand-written document says Serif as readily as serif, and a family actually named “Serif” is not a thing anyone has installed. The canonical spelling name writes back is the lowercase one.

pub const fn name(self) -> &'static str

The token twig spells it with, and what from_attr reads back — CSS’s own generic, so the stylesheet line is font-family: serif.

pub const fn index(self) -> usize

This face’s position in ALL — the index a frontend’s own font table is keyed by.

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 Copy for FontFamily

impl Debug for FontFamily

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

Formats the value using the given formatter.

impl Eq for FontFamily

impl PartialEq for FontFamily

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FontFamily