Struct LoadedFont 

#[repr(C)]
pub struct LoadedFont {
    pub font_hash: u64,
    pub family_name: AzString,
    pub num_glyphs: u32,
    pub has_bytes: bool,
}

Descriptor for a font that the layout engine currently has loaded in its font cache.

Returned by CallbackInfo::get_loaded_fonts(). The font_hash field is the same u64 carried by DisplayListItem::Text glyph runs, so a callback can correlate a loaded font with the text runs that use it and then fetch the raw bytes via CallbackInfo::get_loaded_font_bytes(font_hash) (e.g. to embed every font the layout actually used into a generated PDF).

Fields

font_hash: u64

Stable hash of the parsed font, identical to the font_hash stored on DisplayListItem::Text glyph runs. Use this to look up the bytes with CallbackInfo::get_loaded_font_bytes.

family_name: AzString

PostScript / family name from the font’s name table, or an empty string if the font did not provide one.

num_glyphs: u32

Total number of glyphs in the font (from the maxp table).

has_bytes: bool

true if the source font bytes are retained and can be retrieved with CallbackInfo::get_loaded_font_bytes(font_hash). Fonts loaded on the production (lazy mmap) path retain their bytes; some test-only fonts do not.

Implementations

impl LoadedFont

pub const fn new( font_hash: u64, family_name: AzString, num_glyphs: u32, has_bytes: bool, ) -> Self

Trait Implementations

impl Clone for LoadedFont

fn clone(&self) -> LoadedFont

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LoadedFont

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

Formats the value using the given formatter.

impl Eq for LoadedFont

impl Extend<LoadedFont> for LoadedFontVec

fn extend<T: IntoIterator<Item = LoadedFont>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<LoadedFont> for LoadedFontVec

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = LoadedFont>,

Creates a value from an iterator.

impl Hash for LoadedFont

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 Ord for LoadedFont

fn cmp(&self, other: &LoadedFont) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for LoadedFont

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for LoadedFont

fn partial_cmp(&self, other: &LoadedFont) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for LoadedFont