Struct FontSource 

pub struct FontSource {
    pub url: String,
    pub index: u32,
    pub attribution: Option<String>,
}

A document-scoped font face (TTF / OTF / TTC bytes) consumed by the text node’s font fallback stack. The url doubles as the font’s asset key, like a sprite source’s image.

Fields

url: String

Font source url. Either a font file — http(s)://, file:PATH, or a data: URL, like FileSource::src — or an installed-font reference:

• system:<family>[?weight=<100..900>&style=<normal|italic|oblique>] resolves a face by family name from the host’s installed fonts (e.g. system:Arial Unicode MS, system:Helvetica?weight=700). The family may be written with literal spaces or percent-encoded. weight defaults to 400, style to normal.

A system: reference makes the recipe machine-dependent: the same family resolves to whatever face that machine has installed, so glyph shapes and character coverage can differ across environments (and it is unavailable in the browser/wasm host, where font bytes must be supplied directly). Reference a font file for a fully portable, reproducible recipe.

index: u32

Face index within a TrueType collection (.ttc); 0 (the default) for single-face files. Ignored for system: urls — the installed-font database reports the matched face’s own index.

attribution: Option<String>

Trait Implementations

impl Clone for FontSource

fn clone(&self) -> FontSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontSource

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FontSource

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.