Struct FontContext

pub struct FontContext { /* private fields */ }

Implementations

impl FontContext

pub fn new(library: FontLibrary) -> Self

pub fn library(&self) -> &FontLibrary

Returns the underlying font library.

pub fn reset_group_state(&mut self)

Resets font group caches and state. This should be called at the end of every layout session.

pub fn register_group( &mut self, families: &str, key: u64, attrs: Attributes, ) -> FontGroupId

Registers a font group.

pub fn select_group(&mut self, descriptor: FontGroupId)

Selects a font group for subsequent cluster mapping operations.

pub fn select_fallbacks(&mut self, script: Script, language: Option<&Language>)

Selects fallback fonts for the specified writing system.

pub fn map_cluster( &mut self, cluster: &mut CharCluster, synthesis: &mut Synthesis, ) -> Option<Font>

Maps the characters in a cluster to nominal glyph identifiers and returns the most suitable font based on the currently selected descriptor and fallback configuration.