Struct Cmap 

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

cmap

Implementations

impl<'a> Cmap<'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 version(&self) -> u16

Table version number (0).

pub fn num_tables(&self) -> u16

Number of encoding tables that follow.

pub fn encoding_records(&self) -> &'a [EncodingRecord]

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

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

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

impl<'a> Cmap<'a>

pub fn map_codepoint(&self, codepoint: impl Into<u32>) -> Option<GlyphId>

Map a codepoint to a nominal glyph identifier

This uses the first available subtable that provides a valid mapping.

Note:

Mapping logic is currently only implemented for the most common subtable formats.

pub fn best_subtable(&self) -> Option<(u16, EncodingRecord, CmapSubtable<'a>)>

Returns the index, encoding record and subtable for the most comprehensive mapping available.

Comprehensive means that tables capable of mapping the Unicode full repertoire are chosen over those that only support the basic multilingual plane. The exception is that symbol mappings are preferred above all others (see https://github.com/harfbuzz/harfbuzz/issues/1918).

pub fn uvs_subtable(&self) -> Option<(u16, Cmap14<'a>)>

Returns the index and subtable for the first mapping capable of handling Unicode variation sequences.

This is always a format 14 subtable.

pub fn subtable(&self, index: u16) -> Result<CmapSubtable<'a>, ReadError>

Returns the subtable at the given index.

pub fn closure_glyphs( &self, unicodes: &IntSet<u32>, glyph_set: &mut IntSet<GlyphId>, )

Available on crate feature std only.

Trait Implementations

impl<'a> Clone for Cmap<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> FontRead<'a> for Cmap<'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 Cmap<'a>

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

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

impl TopLevelTable for Cmap<'_>

const TAG: Tag

cmap