SceneTextLayoutCache class
LRU cache for TextPainter layout results for TextNode.
Why: avoid recomputing text layout on every paint when inputs are unchanged.
Invariant: cached layout is valid only while the key (text + style + layout
constraints) is unchanged.
Validate: test/render/scene_text_layout_cache_test.dart.
Constructors
- SceneTextLayoutCache({int maxEntries = 256})
Properties
- debugBuildCount → int
-
no setter
- debugEvictCount → int
-
no setter
- debugHitCount → int
-
no setter
- debugSize → int
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- maxEntries → int
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
clear(
) → void -
getOrBuild(
{required TextNode node, required TextStyle textStyle, required double maxWidth}) → TextPainter -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited