Struct Subtable 

pub struct Subtable<'a> { /* private fields */ }

A subtable in a mort chain.

Implementations

impl<'a> Subtable<'a>

pub const MIN_SIZE: usize

pub fn resolve_offset<O: Offset, R: FontRead<'a, Args = ()>>( &self, offset: O, ) -> Result<R, ReadError>

Resolve the provided offset from the start of this table.

pub fn offset_data(&self) -> FontData<'a>

Return a reference to this table’s raw data.

We use this in the compile crate to resolve offsets.

pub fn shape(&self) -> &Self

👎Deprecated:

just use the base type directly

Return a reference to the table’s ‘Shape’ struct.

This is a low level implementation detail, but it can be useful in some cases where you want to know things about a table’s layout, such as the byte offsets of specific fields.

pub fn length(&self) -> u16

Total subtable length, including this header.

pub fn coverage(&self) -> u16

Coverage flags and subtable type.

pub fn sub_feature_flags(&self) -> u32

The 32-bit mask identifying which subtable this is.

pub fn data(&self) -> &'a [u8]

Data for the specific subtable type.

pub fn length_byte_range(&self) -> Range<usize>

pub fn coverage_byte_range(&self) -> Range<usize>

pub fn sub_feature_flags_byte_range(&self) -> Range<usize>

pub fn data_byte_range(&self) -> Range<usize>

impl<'a> Subtable<'a>

pub fn is_logical(&self) -> bool

If true, this subtable will process glyphs in logical order.

pub fn is_all_directions(&self) -> bool

If true, this subtable applies to horizontal and vertical text.

pub fn is_backwards(&self) -> bool

If true, this subtable processes glyphs in descending order.

pub fn is_vertical(&self) -> bool

If true, this subtable applies only to vertical text.

pub fn kind(&self) -> Result<SubtableKind<'a>, ReadError>

Returns the format-specific subtable data.

Trait Implementations

impl<'a> Clone for Subtable<'a>

fn clone(&self) -> Subtable<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Subtable<'_>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> FontRead<'a> for Subtable<'a>

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

Read an item, performing validation.

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

where Self: FontRead<'a, Args = ()>,

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

impl<'a> MinByteRange<'a> for Subtable<'a>

fn min_byte_range(&self) -> Range<usize>

fn min_table_bytes(&self) -> &'a [u8]

impl ReadArgs for Subtable<'_>

type Args = ()

impl VarSize for Subtable<'_>

type Size = u16

The type of the first (length) field of the item.