Struct GlyphCache 

pub struct GlyphCache { /* private fields */ }

Cache of built glyph paths and pre-rasterized cells.

Implementations

impl GlyphCache

pub fn new() -> Self

pub fn paths_len(&self) -> usize

Entry count of the glyph-path cache (for leak probes).

pub fn cells_len(&self) -> usize

Entry count of the pre-rasterized cell cache (for leak probes).

pub fn get_or_build( &mut self, font_hash: u64, glyph_id: u16, glyph_data: &OwnedGlyph, parsed_font: &ParsedFont, ppem: u16, ) -> Option<CachedGlyph<'_>>

Get a cached path, or build it on cache miss. Returns None if the glyph has no outline (e.g. space character).

pub fn get_or_build_cells( &mut self, font_hash: u64, glyph_id: u16, ppem: u16, glyph_x: f32, glyph_y: f32, scale: f32, is_hinted: bool, hint_correction: f32, ) -> Option<(&[CellAa], i32, i32)>

Get cached rasterizer cells for a glyph, or build them from the path.

• glyph_x, glyph_y: final pixel position (used for sub-pixel quantization)
• scale: font-unit→pixel scale (0.0 for hinted glyphs)
• is_hinted: whether the path is in pixel coords (hinted) or font units
• hint_correction: effective_px / ppem for hinted glyphs (1.0 otherwise). A hinted outline is built at the integer ppem; when the requested effective size (font_size * dpi) is fractional this rescales it back to the true target size so hinted glyphs match their unhinted neighbours and animate smoothly instead of snapping between integer ppems. When the effective size is already integral this is 1.0 and the hinted glyph keeps its pixel-grid-snapped placement.

Returns the cached cells and the integer pixel offset to apply.

Trait Implementations

impl Debug for GlyphCache

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

Formats the value using the given formatter.

impl Default for GlyphCache

fn default() -> Self

Returns the “default value” for a type.