Struct write_fonts::tables::gsub::ReverseChainSingleSubstFormat1

pub struct ReverseChainSingleSubstFormat1 {
    pub coverage: OffsetMarker<CoverageTable>,
    pub backtrack_coverages: Vec<OffsetMarker<CoverageTable>>,
    pub lookahead_coverages: Vec<OffsetMarker<CoverageTable>>,
    pub substitute_glyph_ids: Vec<GlyphId>,
}

Reverse Chaining Contextual Single Substitution Format 1

Fields

coverage: OffsetMarker<CoverageTable>

Offset to Coverage table, from beginning of substitution subtable.

backtrack_coverages: Vec<OffsetMarker<CoverageTable>>

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

lookahead_coverages: Vec<OffsetMarker<CoverageTable>>

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

substitute_glyph_ids: Vec<GlyphId>

Array of substitute glyph IDs — ordered by Coverage index.

Implementations

impl ReverseChainSingleSubstFormat1

pub fn new( coverage: CoverageTable, backtrack_coverages: Vec<CoverageTable>, lookahead_coverages: Vec<CoverageTable>, substitute_glyph_ids: Vec<GlyphId> ) -> Self

Construct a new ReverseChainSingleSubstFormat1

Trait Implementations

impl Clone for ReverseChainSingleSubstFormat1

fn clone(&self) -> ReverseChainSingleSubstFormat1

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ReverseChainSingleSubstFormat1

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

Formats the value using the given formatter.

impl Default for ReverseChainSingleSubstFormat1

fn default() -> ReverseChainSingleSubstFormat1

Returns the “default value” for a type.

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

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

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

impl FontWrite for ReverseChainSingleSubstFormat1

fn write_into(&self, writer: &mut TableWriter)

Write our data and information about offsets into this TableWriter.

impl LookupType for ReverseChainSingleSubstFormat1

const TYPE: u16 = 8u16

The lookup type of this layout subtable.

impl Validate for ReverseChainSingleSubstFormat1

fn validate_impl(&self, ctx: &mut ValidationCtx)

Validate this table.

fn validate(&self) -> Result<(), ValidationReport>

Ensure that this table is well-formed, reporting any errors.