Struct ExtendedStateTable

pub struct ExtendedStateTable<'a, T = NoPayload> { /* private fields */ }

Implementations

impl<T> ExtendedStateTable<'_, T>

pub const HEADER_LEN: usize = 16usize

impl<T> ExtendedStateTable<'_, T>

where T: FixedSize + AnyBitPattern,

Table for driving a finite state machine for layout.

The input to the state machine consists of the current state and a glyph class. The output is an entry containing the next state and a payload that is dependent on the type of layout action being performed.

See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6Tables.html#StateHeader for more detail.

pub fn class(&self, glyph_id: GlyphId) -> Result<u16, ReadError>

Returns the class table entry for the given glyph identifier.

pub fn entry(&self, state: u16, class: u16) -> Result<StateEntry<T>, ReadError>

Returns the entry for the given state and class.

Trait Implementations

impl<'a, T: Clone> Clone for ExtendedStateTable<'a, T>

fn clone(&self) -> ExtendedStateTable<'a, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T> FontRead<'a> for ExtendedStateTable<'a, T>

fn read(data: FontData<'a>) -> Result<Self, ReadError>

Read an instance of Self from the provided data, performing validation.