opt init recognizer

Signed-off-by: dom <githubaccount56556@proton.me>

lib/common/widgets/flutter/page/page_view.dart

@@ -114,7 +114,7 @@ class PageView<T extends HorizontalDragGestureRecognizer>
     required this.horizontalDragGestureRecognizer,
   }) : childrenDelegate = SliverChildListDelegate(children);
 
-  final T horizontalDragGestureRecognizer;
+  final GestureRecognizerFactoryConstructor<T> horizontalDragGestureRecognizer;
 
   /// Creates a scrollable list that works page by page using widgets that are
   /// created on demand.

lib/common/widgets/flutter/page/scrollable.dart

@@ -105,7 +105,7 @@ class Scrollable<T extends HorizontalDragGestureRecognizer>
     required this.horizontalDragGestureRecognizer,
   }) : assert(semanticChildCount == null || semanticChildCount >= 0);
 
-  final T horizontalDragGestureRecognizer;
+  final GestureRecognizerFactoryConstructor<T> horizontalDragGestureRecognizer;
 
   /// {@template flutter.widgets.Scrollable.axisDirection}
   /// The direction in which this widget scrolls.
@@ -815,7 +815,7 @@ class ScrollableState<T extends HorizontalDragGestureRecognizer>
         case Axis.horizontal:
           _gestureRecognizers = <Type, GestureRecognizerFactory>{
             T: GestureRecognizerFactoryWithHandlers<T>(
-              () => widget.horizontalDragGestureRecognizer,
+              widget.horizontalDragGestureRecognizer,
               (T instance) {
                 instance
                   ..onDown = _handleDragDown

lib/common/widgets/flutter/page/tabs.dart

@@ -38,7 +38,7 @@ class TabBarView<T extends HorizontalDragGestureRecognizer>
     required this.horizontalDragGestureRecognizer,
   });
 
-  final T horizontalDragGestureRecognizer;
+  final GestureRecognizerFactoryConstructor<T> horizontalDragGestureRecognizer;
 
   /// This widget's selection and animation state.
   ///

lib/common/widgets/interactiveviewer_gallery/interactiveviewer_gallery.dart

@@ -87,11 +87,7 @@ class _InteractiveviewerGalleryState extends State<InteractiveviewerGallery>
   late final _tween = Matrix4Tween();
   late final _animatable = _tween.chain(CurveTween(curve: Curves.easeOut));
 
-  late final _horizontalDragGestureRecognizer =
-      ImageHorizontalDragGestureRecognizer(
-        width: 0,
-        transformationController: _transformationController,
-      );
+  late final _horizontalDragGestureRecognizer;
 
   late Offset _doubleTapLocalPosition;
 
@@ -111,6 +107,11 @@ class _InteractiveviewerGalleryState extends State<InteractiveviewerGallery>
 
     _transformationController = TransformationController();
 
+    _horizontalDragGestureRecognizer = ImageHorizontalDragGestureRecognizer(
+      width: 0,
+      transformationController: _transformationController,
+    );
+
     _animationController = AnimationController(
       vsync: this,
       duration: const Duration(milliseconds: 300),
@@ -246,7 +247,8 @@ class _InteractiveviewerGalleryState extends State<InteractiveviewerGallery>
                     : _itemBuilder(index, item),
               );
             },
-            horizontalDragGestureRecognizer: _horizontalDragGestureRecognizer,
+            horizontalDragGestureRecognizer: () =>
+                _horizontalDragGestureRecognizer,
           ),
         ),
         Positioned(

lib/common/widgets/scroll_physics.dart

@@ -9,7 +9,7 @@ Widget videoTabBarView({
 }) => TabBarView<CustomHorizontalDragGestureRecognizer>(
   controller: controller,
   physics: const CustomTabBarViewScrollPhysics(parent: ClampingScrollPhysics()),
-  horizontalDragGestureRecognizer: CustomHorizontalDragGestureRecognizer(),
+  horizontalDragGestureRecognizer: CustomHorizontalDragGestureRecognizer.new,
   children: children,
 );
 
@@ -19,7 +19,7 @@ Widget tabBarView({
 }) => TabBarView<CustomHorizontalDragGestureRecognizer>(
   physics: const CustomTabBarViewScrollPhysics(),
   controller: controller,
-  horizontalDragGestureRecognizer: CustomHorizontalDragGestureRecognizer(),
+  horizontalDragGestureRecognizer: CustomHorizontalDragGestureRecognizer.new,
   children: children,
 );