Struct Subtable 

pub struct Subtable<'a> {
    data: FontData<'a>,
}

A subtable in a morx chain.

Fields

data: FontData<'a>

Implementations

impl<'a> Subtable<'a>

pub const MIN_SIZE: usize

pub fn resolve_offset<O: Offset, R: FontRead<'a>>( &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) -> u32

Total subtable length, including this header.

pub fn coverage(&self) -> u32

Coverage flags and subtable type.

pub fn sub_feature_flags(&self) -> u32

The 32-bit mask identifying which subtable this is (the subtable being executed if the AND of this value and the processed defaultFlags is nonzero).

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

Data for specific subtable.

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 (or reverse logical order, depending on the value of bit 0x80000000).

pub fn is_all_directions(&self) -> bool

If true, this subtable will be applied to both horizontal and vertical text (i.e. the state of bit 0x80000000 is ignored).

pub fn is_backwards(&self) -> bool

If true, this subtable will process glyphs in descending order. Otherwise, it will process the glyphs in ascending order.

pub fn is_vertical(&self) -> bool

If true, this subtable will only be applied to vertical text. Otherwise, this subtable will only be applied to horizontal text.

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

Returns an enum representing the actual 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<'a> FontRead<'a> for Subtable<'a>

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

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 VarSize for Subtable<'_>

type Size = u32

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