Struct ClassDefFormat1 

pub struct ClassDefFormat1<'a> {
    data: FontData<'a>,
}

Class Definition Table Format 1

Fields

data: FontData<'a>

Implementations

impl<'a> ClassDefFormat1<'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 class_format(&self) -> u16

Format identifier — format = 1

pub fn start_glyph_id(&self) -> GlyphId16

First glyph ID of the classValueArray

pub fn glyph_count(&self) -> u16

Size of the classValueArray

pub fn class_value_array(&self) -> &'a [BigEndian<u16>]

Array of Class Values — one per glyph ID

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

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

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

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

impl<'a> ClassDefFormat1<'a>

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)> + 'a

Iterate over each glyph and its class.

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

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

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

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

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

Trait Implementations

impl<'a> Clone for ClassDefFormat1<'a>

fn clone(&self) -> ClassDefFormat1<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> FontRead<'a> for ClassDefFormat1<'a>

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

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

impl Format<u16> for ClassDefFormat1<'_>

const FORMAT: u16 = 1

The format value for this table.

impl Intersect for ClassDefFormat1<'_>

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

impl<'a> MinByteRange<'a> for ClassDefFormat1<'a>

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

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