Struct FontManager 

pub struct FontManager { /* private fields */ }

Manages the lifecycle of temporarily loaded system fonts.

Fonts are keyed by their canonical (absolute) path, ensuring each physical font file is loaded at most once. When the manager is dropped, all loaded fonts are automatically unloaded.

Examples

use flash_font_injector::FontManager;
use camino::Utf8Path;

let mut manager = FontManager::default();
manager.load(Utf8Path::new("path/to/font.ttf")).unwrap();

assert!(manager.len() > 0);

manager.unload(Utf8Path::new("path/to/font.ttf")).unwrap();

Implementations

impl FontManager

pub fn new(config: FontManagerConfig) -> Self

Creates an empty FontManager.

pub fn load(&mut self, path: &Utf8Path) -> FontResult<()>

Loads a font from the given file path into the system.

The provided path is used directly without canonicalization. If the same font file is already loaded, this is a no-op that returns Ok(()). Expect full path

pub fn load_all(&mut self, paths: Vec<Utf8PathBuf>) -> FontResult<()>

Loads multiple fonts in parallel.

Returns an error if any of the fonts failed to load, though some fonts might still have been loaded successfully.

pub fn unload(&mut self, path: &Utf8Path) -> FontResult<()>

Unloads a previously loaded font and removes it from the manager.

The provided path is used directly without canonicalization. If the font is not currently loaded, this is a no-op that returns Ok(()).

pub fn unload_all(&mut self) -> FontResult<()>

Unloads all currently loaded fonts in parallel.

The manager’s internal tracking is cleared even if some unloads fail. Returns the first encountered error if unloading any font fails.

pub fn loaded_fonts(&self) -> impl Iterator<Item = &Utf8Path>

Returns an iterator over the canonical paths of all loaded fonts.

pub fn len(&self) -> usize

Returns the number of currently loaded fonts.

pub fn is_empty(&self) -> bool

Returns true if no fonts are currently loaded.

Trait Implementations

impl Debug for FontManager

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

Formats the value using the given formatter.

impl Default for FontManager

fn default() -> FontManager

Returns the “default value” for a type.

impl Drop for FontManager

fn drop(&mut self)

Executes the destructor for this type.