Struct FontCache 

pub struct FontCache { /* private fields */ }

Thread-safe font cache

Implementations

impl FontCache

pub fn new() -> Self

Create a new font cache

pub fn add_font(&self, name: impl Into<String>, font: Font) -> Result<()>

Add a font to the cache

pub fn get_font(&self, name: &str) -> Option<Arc<Font>>

Get a font from the cache

pub fn has_font(&self, name: &str) -> bool

Check if a font exists in the cache

pub fn font_names(&self) -> Vec<String>

Get all font names in the cache, sorted lexicographically.

Sorting is intentional: the writer (PdfWriter::write_fonts) iterates this list to allocate ObjectIds for each font. Returning HashMap iteration order (randomized per instance) caused two builds of the same document to allocate different ObjectIds, cascading into divergent xref tables and resource references — see #334 item #5.

pub fn clear(&self)

Clear the cache

pub fn len(&self) -> usize

Get the number of cached fonts

pub fn is_empty(&self) -> bool

Check if the cache is empty

Trait Implementations

impl Clone for FontCache

fn clone(&self) -> FontCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FontCache

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

Formats the value using the given formatter.

impl Default for FontCache

fn default() -> Self

Returns the “default value” for a type.