Type Alias Mvar

pub type Mvar<'a> = TableRef<'a, MvarMarker>;

The MVAR (Metrics Variations) table

Aliased Type

struct Mvar<'a> { /* private fields */ }

Implementations

impl<'a> Mvar<'a>

pub fn version(&self) -> MajorMinor

Major version number of the horizontal metrics variations table — set to 1. Minor version number of the horizontal metrics variations table — set to 0.

pub fn value_record_size(&self) -> u16

The size in bytes of each value record — must be greater than zero.

pub fn value_record_count(&self) -> u16

The number of value records — may be zero.

pub fn item_variation_store_offset(&self) -> Nullable<Offset16>

Offset in bytes from the start of this table to the item variation store table. If valueRecordCount is zero, set to zero; if valueRecordCount is greater than zero, must be greater than zero.

pub fn item_variation_store( &self, ) -> Option<Result<ItemVariationStore<'a>, ReadError>>

Attempt to resolve item_variation_store_offset.

pub fn value_records(&self) -> &'a [ValueRecord]

Array of value records that identify target items and the associated delta-set index for each. The valueTag records must be in binary order of their valueTag field.

impl Mvar<'_>

pub fn metric_delta( &self, tag: Tag, coords: &[F2Dot14], ) -> Result<Fixed, ReadError>

Returns the metric delta for the specified tag and normalized variation coordinates. Possible tags are found in the tags module.

impl<'a, T> TableRef<'a, T>

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) -> &T

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.

Trait Implementations

impl<'a> FontRead<'a> for Mvar<'a>

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

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

impl TopLevelTable for Mvar<'_>

const TAG: Tag

MVAR

impl<'a, T: Clone> Clone for TableRef<'a, T>

fn clone(&self) -> TableRef<'a, T>

Returns a copy of the value.

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

Performs copy-assignment from source.