Struct FontAtlas 

pub struct FontAtlas { /* private fields */ }

Type-erased wrapper around any Atlas implementation.

Implementations

impl FontAtlas

pub fn new(inner: impl Atlas + 'static) -> Self

Wraps an atlas implementation in a type-erased container.

pub fn get_glyph_id(&mut self, key: &str, style_bits: u16) -> Option<u16>

Returns the styled glyph ID for the given symbol.

pub fn get_base_glyph_id(&mut self, key: &str) -> Option<u16>

Returns the unstyled base glyph ID for the given symbol.

pub fn cell_size(&self) -> CellSize

Returns the cell dimensions used for grid layout.

pub fn bind(&self, gl: &Context)

Binds the atlas texture for rendering.

pub fn underline(&self) -> LineDecoration

Returns underline position and thickness metadata.

pub fn strikethrough(&self) -> LineDecoration

Returns strikethrough position and thickness metadata.

pub fn get_symbol(&self, glyph_id: u16) -> Option<CompactString>

Returns the symbol string for the given glyph ID.

pub fn get_ascii_char(&self, glyph_id: u16) -> Option<char>

Returns the ASCII character for the given glyph ID, if applicable.

pub fn glyph_tracker(&self) -> &GlyphTracker

Returns a reference to the glyph usage tracker.

pub fn glyph_count(&self) -> u32

Returns the total number of allocated glyphs.

pub fn recreate_texture(&mut self, gl: &Context) -> Result<(), Error>

Recreates the GPU texture after a context loss.

Errors

Returns an error if GPU texture creation fails.

pub fn for_each_symbol(&self, f: &mut dyn FnMut(u16, &str))

Iterates over all glyph ID to symbol mappings.

pub fn resolve_glyph_slot( &mut self, key: &str, style_bits: u16, ) -> Option<GlyphSlot>

Resolves a symbol to its glyph slot classification.

pub fn flush(&mut self, gl: &Context) -> Result<(), Error>

Flushes pending glyph data to the GPU texture.

Errors

Returns an error if texture upload fails.

pub fn delete(&self, gl: &Context)

Deletes the GPU texture resources associated with this atlas.

pub fn update_pixel_ratio( &mut self, gl: &Context, pixel_ratio: f32, ) -> Result<f32, Error>

Updates the pixel ratio for HiDPI rendering.

Returns the effective pixel ratio to use for viewport scaling.

Errors

Returns an error if GPU texture recreation fails during reinitialization.

pub fn cell_scale_for_dpr(&self, pixel_ratio: f32) -> f32

Returns the cell scale factor for layout calculations.

pub fn texture_cell_size(&self) -> CellSize

Returns the texture cell size in physical pixels.

Trait Implementations

impl Debug for FontAtlas

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

Formats the value using the given formatter.

impl<A: Atlas + 'static> From<A> for FontAtlas

fn from(atlas: A) -> Self

Converts to this type from the input type.