Enum ClassDef 

pub enum ClassDef<'a> {
    Format1(ClassDefFormat1<'a>),
    Format2(ClassDefFormat2<'a>),
}

A Class Definition Table

Variants

Format1(ClassDefFormat1<'a>)

Format2(ClassDefFormat2<'a>)

Implementations

impl<'a> ClassDef<'a>

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

Return the FontData used to resolve offsets for this table.

pub fn class_format(&self) -> u16

Format identifier — format = 1

impl ClassDef<'_>

pub fn get(&self, gid: impl Into<GlyphId>) -> u16

Get the class for this glyph id

pub fn iter(&self) -> impl Iterator<Item = (GlyphId16, u16)> + '_

Iterate over each glyph and its class.

This will not include class 0 unless it has been explicitly assigned.

pub fn population(&self) -> usize

Return the number of glyphs explicitly assigned to a class in this table

pub fn cost(&self) -> u32

Return the cost of looking up a glyph in this table

pub fn intersect_classes(&self, glyphs: &IntSet<GlyphId>) -> IntSet<u16>

Available on crate feature std only.

Returns class values for the intersected glyphs of this table and input ‘glyphs’ set.

pub fn intersected_class_glyphs( &self, glyphs: &IntSet<GlyphId>, class: u16, ) -> IntSet<GlyphId>

Available on crate feature std only.

Returns intersected glyphs of this table and input ‘glyphs’ set that are assgiend to input class value.

pub fn intersects_class_glyphs( &self, glyphs: &IntSet<GlyphId>, class: u16, ) -> bool

Available on crate feature std only.

Checks whether any glyph in the given glyphs set intersects with this table and is assigned to the specified class value.

Trait Implementations

impl<'a> Clone for ClassDef<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for ClassDef<'_>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> FontRead<'a> for ClassDef<'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 Intersect for ClassDef<'_>

Available on crate feature std only.

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

impl<'a> MinByteRange<'a> for ClassDef<'a>

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

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

impl ReadArgs for ClassDef<'_>

type Args = ()