Struct Subtable0 

pub struct Subtable0<'a> {
    data: FontData<'a>,
}

The type 0 kerx subtable.

Fields

data: FontData<'a>

Implementations

impl<'a> Subtable0<'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 n_pairs(&self) -> u32

The number of kerning pairs in this subtable.

pub fn search_range(&self) -> u32

The largest power of two less than or equal to the value of nPairs, multiplied by the size in bytes of an entry in the subtable.

pub fn entry_selector(&self) -> u32

This is calculated as log2 of the largest power of two less than or equal to the value of nPairs. This value indicates how many iterations of the search loop have to be made. For example, in a list of eight items, there would be three iterations of the loop.

pub fn range_shift(&self) -> u32

The value of nPairs minus the largest power of two less than or equal to nPairs. This is multiplied by the size in bytes of an entry in the table.

pub fn pairs(&self) -> &'a [Subtable0Pair]

Kerning records.

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

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

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

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

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

impl Subtable0<'_>

pub fn kerning(&self, left: GlyphId, right: GlyphId) -> Option<i32>

Returns the kerning adjustment for the given pair.

Trait Implementations

impl<'a> Clone for Subtable0<'a>

fn clone(&self) -> Subtable0<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> FontRead<'a> for Subtable0<'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 Subtable0<'a>

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

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