Struct read_fonts::FontRef

pub struct FontRef<'a> {
    pub table_directory: TableDirectory<'a>,
    /* private fields */
}

Reference to an in-memory font.

This is a simple implementation of the TableProvider trait backed by a borrowed slice containing font data.

Fields

table_directory: TableDirectory<'a>

Implementations

impl<'a> FontRef<'a>

pub fn new(data: &'a [u8]) -> Result<Self, ReadError>

Creates a new reference to an in-memory font backed by the given data.

The data must be a single font (not a font collection) and must begin with a table directory to be considered valid.

To load a font from a font collection, use FontRef::from_index instead.

pub fn from_index(data: &'a [u8], index: u32) -> Result<Self, ReadError>

Creates a new reference to an in-memory font at the specified index backed by the given data.

The data slice must begin with either a table directory or a ttc header to be considered valid.

In other words, this accepts either font collection (ttc) or single font (ttf/otf) files. If a single font file is provided, the index parameter must be 0.

pub fn table_data(&self, tag: Tag) -> Option<FontData<'a>>

Returns the data for the table with the specified tag, if present.

Trait Implementations

impl<'a> Clone for FontRef<'a>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> TableProvider<'a> for FontRef<'a>

fn data_for_tag(&self, tag: Tag) -> Option<FontData<'a>>

fn expect_data_for_tag(&self, tag: Tag) -> Result<FontData<'a>, ReadError>

fn expect_table<T: TopLevelTable + FontRead<'a>>(&self) -> Result<T, ReadError>

fn head(&self) -> Result<Head<'a>, ReadError>

fn name(&self) -> Result<Name<'a>, ReadError>

fn hhea(&self) -> Result<Hhea<'a>, ReadError>

fn vhea(&self) -> Result<Vhea<'a>, ReadError>

fn hmtx(&self) -> Result<Hmtx<'a>, ReadError>

fn hdmx(&self) -> Result<Hdmx<'a>, ReadError>

fn vmtx(&self) -> Result<Vmtx<'a>, ReadError>

fn vorg(&self) -> Result<Vorg<'a>, ReadError>

fn fvar(&self) -> Result<Fvar<'a>, ReadError>

fn avar(&self) -> Result<Avar<'a>, ReadError>

fn hvar(&self) -> Result<Hvar<'a>, ReadError>

fn vvar(&self) -> Result<Vvar<'a>, ReadError>

fn mvar(&self) -> Result<Mvar<'a>, ReadError>

fn maxp(&self) -> Result<Maxp<'a>, ReadError>

fn os2(&self) -> Result<Os2<'a>, ReadError>

fn post(&self) -> Result<Post<'a>, ReadError>

fn gasp(&self) -> Result<Gasp<'a>, ReadError>

fn loca(&self, is_long: impl Into<Option<bool>>) -> Result<Loca<'a>, ReadError>

is_long can be optionally provided, if known, otherwise we look it up in head.

fn glyf(&self) -> Result<Glyf<'a>, ReadError>

fn gvar(&self) -> Result<Gvar<'a>, ReadError>

fn cvar(&self) -> Result<Cvar<'a>, ReadError>

fn cff(&self) -> Result<Cff<'a>, ReadError>

fn cff2(&self) -> Result<Cff2<'a>, ReadError>

fn cmap(&self) -> Result<Cmap<'a>, ReadError>

fn gdef(&self) -> Result<Gdef<'a>, ReadError>

fn gpos(&self) -> Result<Gpos<'a>, ReadError>

fn gsub(&self) -> Result<Gsub<'a>, ReadError>

fn feat(&self) -> Result<Feat<'a>, ReadError>

fn ltag(&self) -> Result<Ltag<'a>, ReadError>

fn ankr(&self) -> Result<Ankr<'a>, ReadError>

fn colr(&self) -> Result<Colr<'a>, ReadError>

fn cpal(&self) -> Result<Cpal<'a>, ReadError>

fn cblc(&self) -> Result<Cblc<'a>, ReadError>

fn cbdt(&self) -> Result<Cbdt<'a>, ReadError>

fn eblc(&self) -> Result<Eblc<'a>, ReadError>

fn ebdt(&self) -> Result<Ebdt<'a>, ReadError>

fn sbix(&self) -> Result<Sbix<'a>, ReadError>

fn stat(&self) -> Result<Stat<'a>, ReadError>

fn svg(&self) -> Result<Svg<'a>, ReadError>

fn varc(&self) -> Result<Varc<'a>, ReadError>

fn ift(&self) -> Result<Ift<'a>, ReadError>

fn iftx(&self) -> Result<Ift<'a>, ReadError>