Struct CharmapId 

pub struct CharmapId {
    pub platform: u16,
    pub encoding: u16,
}

A charmap’s (platform, encoding) identity, as the cmap table declares it.

PDFium compares these pairs literally — (3,1) for Windows Unicode, (3,0) for Windows Symbol, (1,0) for Mac Roman — and the order it prefers them in flips with the symbolic flag, so the pairs have to survive as data rather than being collapsed into a “best charmap”.

Fields

platform: u16

The cmap platform ID.

encoding: u16

The cmap encoding ID, whose meaning depends on the platform.

Implementations

impl CharmapId

pub const WINDOWS_UNICODE: Self

Windows Unicode BMP — the charmap UseTTCharmapUnicode accepts outright.

pub const WINDOWS_SYMBOL: Self

Windows Symbol, the 0xF0xx private-use charmap.

pub const MAC_ROMAN: Self

Mac Roman.

pub const UNICODE_SYNTHETIC: Self

The synthesized Unicode charmap a Type 1 face exposes first.

pub const ADOBE_CUSTOM: Self

A Type 1 face’s own encoding vector, which FreeType reports as ADOBE_CUSTOM.

pub fn is_unicode(self) -> bool

Does this charmap map Unicode?

Platform 0 is Unicode by definition and (3,1)/(3,10) are Windows’ Unicode encodings. This is FreeType’s FT_ENCODING_UNICODE test, which UseTTCharmapUnicode reads for any charmap that is not (3,0).

Trait Implementations

impl Clone for CharmapId

fn clone(&self) -> CharmapId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CharmapId

impl Debug for CharmapId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CharmapId

impl Hash for CharmapId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CharmapId

fn eq(&self, other: &CharmapId) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CharmapId