GlyphCache class

Caches pre-laid-out single-glyph paragraphs keyed by (codepoint, fg) so the painter never re-runs text layout on the hot path. LRU-capped.

Constructors

GlyphCache({required String fontFamily, required double fontSize, required double cellWidth, List<String> fontFamilyFallback = const [], String? boldFamily, String? italicFamily, String? boldItalicFamily, double lineHeight = 1.0, int maxEntries = 4096, int maxBuildsPerFrame = 128})

boldFamily → String?: final
boldItalicFamily → String?: final
cellWidth → double: final
fontFamily → String: final
fontFamilyFallback → List<String>: final
fontSize → double: final
hashCode → int: The hash code for this object.
no setterinherited
italicFamily → String?: final
length → int: no setter
lineHeight → double: Line-height multiplier matching the cell metrics. A forced strut of this height makes every glyph (ASCII, CJK, fallback fonts) share one baseline and fill the cell box, so text aligns with full-cell box-drawing glyphs instead of riding high in an over-tall cell.
final
maxBuildsPerFrame → int: Caps synchronous paragraph layout per frame so first paint cannot freeze the UI.
final
maxEntries → int: final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

beginFrame() → void
dispose() → void: Clears the cached paragraphs. Call before rebuilding the cache with new font metrics (e.g. on font-zoom).
familyForStyle({required bool bold, required bool italic}) → String
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
tryGet(int codepoint, int fg, {bool bold = false, bool italic = false, bool wide = false}) → Paragraph?: Returns a cached paragraph, or builds one if under the per-frame budget. Returns null when the budget is exhausted (the painter schedules a warmup frame and the glyph fills in next frame).