PiliPlus/lib/scripts/draggable_scrollable_sheet.patch

diff --git a/packages/flutter/lib/src/widgets/draggable_scrollable_sheet.dart b/packages/flutter/lib/src/widgets/draggable_scrollable_sheet.dart
index 0022f5000d2..c593779bf3e 100644
--- a/packages/flutter/lib/src/widgets/draggable_scrollable_sheet.dart
+++ b/packages/flutter/lib/src/widgets/draggable_scrollable_sheet.dart
@@ -311,6 +311,7 @@ class DraggableScrollableSheet extends StatefulWidget {
     this.snapAnimationDuration,
     this.controller,
     this.shouldCloseOnMinExtent = true,
+    this.initialScrollOffset = 0.0,
     required this.builder,
   }) : assert(minChildSize >= 0.0),
        assert(maxChildSize <= 1.0),
@@ -318,6 +319,8 @@ class DraggableScrollableSheet extends StatefulWidget {
        assert(initialChildSize <= maxChildSize),
        assert(snapAnimationDuration == null || snapAnimationDuration > Duration.zero);
 
+  final double initialScrollOffset;
+
   /// The initial fractional value of the parent container's height to use when
   /// displaying the widget.
   ///
@@ -644,9 +647,15 @@ class _DraggableSheetExtent {
   }
 }
 
+typedef DraggableScrollableSheetState = _DraggableScrollableSheetState;
+
 class _DraggableScrollableSheetState extends State<DraggableScrollableSheet> {
   late _DraggableScrollableSheetScrollController _scrollController;
+  set scrollController(_DraggableScrollableSheetScrollController controller) {
+    _scrollController = controller;
+  }
   late _DraggableSheetExtent _extent;
+  _DraggableSheetExtent get extent => _extent;
 
   @override
   void initState() {
@@ -660,10 +669,17 @@ class _DraggableScrollableSheetState extends State<DraggableScrollableSheet> {
       initialSize: widget.initialChildSize,
       shouldCloseOnMinExtent: widget.shouldCloseOnMinExtent,
     );
-    _scrollController = _DraggableScrollableSheetScrollController(extent: _extent);
+    initScrollController();
     widget.controller?._attach(_scrollController);
   }
 
+  void initScrollController() {
+    _scrollController = _DraggableScrollableSheetScrollController(
+      extent: _extent,
+      initialScrollOffset: widget.initialScrollOffset,
+    );
+  }
+
   List<double> _impliedSnapSizes() {
     for (var index = 0; index < (widget.snapSizes?.length ?? 0); index += 1) {
       final double snapSize = widget.snapSizes![index];
@@ -799,8 +815,11 @@ class _DraggableScrollableSheetState extends State<DraggableScrollableSheet> {
 ///  * [PrimaryScrollController], which can be used to establish a
 ///    [_DraggableScrollableSheetScrollController] as the primary controller for
 ///    descendants.
+
+typedef DraggableScrollableSheetScrollController = _DraggableScrollableSheetScrollController;
+
 class _DraggableScrollableSheetScrollController extends ScrollController {
-  _DraggableScrollableSheetScrollController({required this.extent});
+  _DraggableScrollableSheetScrollController({required this.extent, super.initialScrollOffset});
 
   _DraggableSheetExtent extent;
   VoidCallback? onPositionDetached;
@@ -816,6 +835,7 @@ class _DraggableScrollableSheetScrollController extends ScrollController {
       context: context,
       oldPosition: oldPosition,
       getExtent: () => extent,
+      initialPixels: initialScrollOffset,
     );
   }
 
@@ -861,12 +881,16 @@ class _DraggableScrollableSheetScrollController extends ScrollController {
 /// See also:
 ///
 ///  * [_DraggableScrollableSheetScrollController], which uses this as its [ScrollPosition].
+
+typedef DraggableScrollableSheetScrollPosition = _DraggableScrollableSheetScrollPosition;
+
 class _DraggableScrollableSheetScrollPosition extends ScrollPositionWithSingleContext {
   _DraggableScrollableSheetScrollPosition({
     required super.physics,
     required super.context,
     super.oldPosition,
     required this.getExtent,
+    super.initialPixels,
   });
 
   VoidCallback? _dragCancelCallback;