perf: avoid unnecessarily creating new list on every frame (#1708)

fleaflet · Oct 28, 2023 · 394dc27 · 394dc27
1 parent c24b6e6
commit 394dc27
Showing 1 changed file with 30 additions and 26 deletions.
diff --git a/lib/src/map/widget.dart b/lib/src/map/widget.dart
@@ -139,38 +139,42 @@ class _FlutterMapStateContainer extends State<FlutterMap>
  Widget build(BuildContext context) {
  super.build(context);
 
+ final widgets = ClipRect(
+ child: Stack(
+ children: <Widget>[
+ Positioned.fill(
+ child: ColoredBox(color: widget.options.backgroundColor),
+ ),
+ ...widget.children.map(
+ (child) => TranslucentPointer(
+ translucent: widget.options.applyPointerTranslucencyToLayers,
+ child: child,
+ ),
+ ),
+ ...widget.nonRotatedChildren.map(
+ (child) => TranslucentPointer(
+ translucent: widget.options.applyPointerTranslucencyToLayers,
+ child: child,
+ ),
+ ),
+ ],
+ ),
+ );
+
  return LayoutBuilder(
  builder: (context, constraints) {
  _updateAndEmitSizeIfConstraintsChanged(constraints);
 
  return FlutterMapInteractiveViewer(
  controller: _flutterMapInternalController,
- builder: (context, options, camera) => FlutterMapInheritedModel(
- controller: _mapController,
- options: options,
- camera: camera,
- child: ClipRect(
- child: Stack(
- children: [
- Positioned.fill(
- child: ColoredBox(color: options.backgroundColor),
- ),
- ...widget.children.map(
- (child) => TranslucentPointer(
- translucent: options.applyPointerTranslucencyToLayers,
- child: child,
- ),
- ),
- ...widget.nonRotatedChildren.map(
- (child) => TranslucentPointer(
- translucent: options.applyPointerTranslucencyToLayers,
- child: child,
- ),
- ),
- ],
- ),
- ),
- ),
+ builder: (context, options, camera) {
+ return FlutterMapInheritedModel(
+ controller: _mapController,
+ options: options,
+ camera: camera,
+ child: widgets,
+ );
+ },
  );
  },
  );