Type Alias ReverseChainSingleSubstFormat1

pub type ReverseChainSingleSubstFormat1<'a> = TableRef<'a, ReverseChainSingleSubstFormat1Marker>;

Reverse Chaining Contextual Single Substitution Format 1

Aliased Type

pub struct ReverseChainSingleSubstFormat1<'a> {
    pub(crate) shape: ReverseChainSingleSubstFormat1Marker,
    pub(crate) data: FontData<'a>,
}

Fields

shape: ReverseChainSingleSubstFormat1Marker

data: FontData<'a>

Implementations

impl<'a> ReverseChainSingleSubstFormat1<'a>

pub fn subst_format(&self) -> u16

Format identifier: format = 1

pub fn coverage_offset(&self) -> Offset16

Offset to Coverage table, from beginning of substitution subtable.

pub fn coverage(&self) -> Result<CoverageTable<'a>, ReadError>

Attempt to resolve coverage_offset.

pub fn backtrack_glyph_count(&self) -> u16

Number of glyphs in the backtrack sequence.

pub fn backtrack_coverage_offsets(&self) -> &'a [BigEndian<Offset16>]

Array of offsets to coverage tables in backtrack sequence, in glyph sequence order.

pub fn backtrack_coverages( &self, ) -> ArrayOfOffsets<'a, CoverageTable<'a>, Offset16>

A dynamically resolving wrapper for backtrack_coverage_offsets.

pub fn lookahead_glyph_count(&self) -> u16

Number of glyphs in lookahead sequence.

pub fn lookahead_coverage_offsets(&self) -> &'a [BigEndian<Offset16>]

Array of offsets to coverage tables in lookahead sequence, in glyph sequence order.

pub fn lookahead_coverages( &self, ) -> ArrayOfOffsets<'a, CoverageTable<'a>, Offset16>

A dynamically resolving wrapper for lookahead_coverage_offsets.

pub fn glyph_count(&self) -> u16

Number of glyph IDs in the substituteGlyphIDs array.

pub fn substitute_glyph_ids(&self) -> &'a [BigEndian<GlyphId16>]

Array of substitute glyph IDs — ordered by Coverage index.

Trait Implementations

impl<'a> Debug for ReverseChainSingleSubstFormat1<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> FontRead<'a> for ReverseChainSingleSubstFormat1<'a>

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

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

impl GlyphClosure for ReverseChainSingleSubstFormat1<'_>

fn closure_glyphs( &self, ctx: &mut ClosureCtx<'_>, _lookup_list: &SubstitutionLookupList<'_>, _lookup_index: u16, ) -> Result<(), ReadError>

Update the set of glyphs with any glyphs reachable via substitution.

fn may_have_non_1to1(&self) -> Result<bool, ReadError>

impl Intersect for ReverseChainSingleSubstFormat1<'_>

fn intersects(&self, glyph_set: &IntSet<GlyphId>) -> Result<bool, ReadError>

impl<'a> SomeTable<'a> for ReverseChainSingleSubstFormat1<'a>

fn type_name(&self) -> &str

The name of this table

fn get_field(&self, idx: usize) -> Option<Field<'a>>

Access this table’s fields, in declaration order.