Struct FontTableFunction 

pub(crate) struct FontTableFunction {
    table_fn: Arc<dyn Fn(Tag) -> Option<FontBlob> + Send + Sync>,
    tables: Arc<PerTableData<OnceLock<Option<(Atomic<u8>, FontBlob)>>>>,
}

Lazy, per table font data provided by a function.

Fields

table_fn: Arc<dyn Fn(Tag) -> Option<FontBlob> + Send + Sync>

tables: Arc<PerTableData<OnceLock<Option<(Atomic<u8>, FontBlob)>>>>

Implementations

impl FontTableFunction

pub fn new( table_fn: Arc<dyn Fn(Tag) -> Option<FontBlob> + Send + Sync>, ) -> FontTableFunction

Creates a new font table function with the given callback that should return a blob containing the table data for the requested tag.

Trait Implementations

impl Clone for FontTableFunction

fn clone(&self) -> FontTableFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl From<FontTableFunction> for FontSource

fn from(value: FontTableFunction) -> FontSource

Converts to this type from the input type.