Type Alias Hmtx

pub type Hmtx<'a> = TableRef<'a, HmtxMarker>;

The hmtx (Horizontal Metrics) table

Aliased Type

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

Implementations

impl<'a> Hmtx<'a>

pub fn read( data: FontData<'a>, number_of_h_metrics: u16, num_glyphs: u16, ) -> Result<Self, ReadError>

A constructor that requires additional arguments.

This type requires some external state in order to be parsed.

impl<'a> Hmtx<'a>

pub fn h_metrics(&self) -> &'a [LongMetric]

Paired advance width/height and left/top side bearing values for each glyph. Records are indexed by glyph ID.

pub fn left_side_bearings(&self) -> &'a [BigEndian<i16>]

Leading (left/top) side bearings for glyph IDs greater than or equal to numberOfLongMetrics.

impl Hmtx<'_>

pub fn advance(&self, glyph_id: GlyphId) -> Option<u16>

Returns the advance width for the given glyph identifier.

pub fn side_bearing(&self, glyph_id: GlyphId) -> Option<i16>

Returns the left side bearing for the given glyph identifier.

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> FontReadWithArgs<'a> for Hmtx<'a>

fn read_with_args( data: FontData<'a>, args: &(u16, u16), ) -> Result<Self, ReadError>

read an item, using the provided args.

impl ReadArgs for Hmtx<'_>

type Args = (u16, u16)

impl TopLevelTable for Hmtx<'_>

const TAG: Tag

hmtx

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.