Struct ItemVariationData 

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

The ItemVariationData subtable

Fields

data: FontData<'a>

Implementations

impl<'a> ItemVariationData<'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 item_count(&self) -> u16

The number of delta sets for distinct items.

pub fn word_delta_count(&self) -> u16

A packed field: the high bit is a flag—see details below.

pub fn region_index_count(&self) -> u16

The number of variation regions referenced.

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

Array of indices into the variation region list for the regions referenced by this item variation data table.

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

Delta-set rows.

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

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

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

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

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

impl<'a> ItemVariationData<'a>

pub fn delta_set( &self, inner_index: u16, ) -> impl Iterator<Item = i32> + 'a + Clone

Returns an iterator over the per-region delta values for the specified inner index.

pub fn get_delta_row_len(&self) -> usize

pub fn delta_row_len(word_delta_count: u16, region_index_count: u16) -> usize

the length of one delta set

pub fn delta_sets_len( item_count: u16, word_delta_count: u16, region_index_count: u16, ) -> usize

Trait Implementations

impl<'a> Clone for ItemVariationData<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> FontRead<'a> for ItemVariationData<'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 ItemVariationData<'a>

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

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