Trait LayoutTable

pub trait LayoutTable {
    type Lookup: LayoutLookup;

    const INDEX: TableIndex;
    const IN_PLACE: bool;

    // Required method
    fn get_lookup(&self, index: LookupIndex) -> Option<&Self::Lookup>;
}

A lookup-based layout table (GSUB or GPOS).

Required Associated Constants

const INDEX: TableIndex

The index of this table.

const IN_PLACE: bool

Whether lookups in this table can be applied to the buffer in-place.

Required Associated Types

type Lookup: LayoutLookup

The kind of lookup stored in this table.

Required Methods

fn get_lookup(&self, index: LookupIndex) -> Option<&Self::Lookup>

Get the lookup at the specified index.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<'a> LayoutTable for PositioningTable<'a>

const INDEX: TableIndex = TableIndex::GPOS

const IN_PLACE: bool = true

type Lookup = PositioningLookup<'a>

impl<'a> LayoutTable for SubstitutionTable<'a>

const INDEX: TableIndex = TableIndex::GSUB

const IN_PLACE: bool = false

type Lookup = SubstLookup<'a>