Add Foldable support for modal routes (#92909)

packages/flutter/lib/src/cupertino/route.dart

@@ -999,8 +999,12 @@ class _CupertinoEdgeShadowPainter extends BoxPainter {
 /// The `routeSettings` argument is used to provide [RouteSettings] to the
 /// created Route.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// See also:
 ///
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * [CupertinoActionSheet], which is the widget usually returned by the
 ///    `builder` argument.
 ///  * <https://developer.apple.com/design/human-interface-guidelines/ios/views/action-sheets/>
@@ -1015,6 +1019,7 @@ class CupertinoModalPopupRoute<T> extends PopupRoute<T> {
     bool? semanticsDismissible,
     ImageFilter? filter,
     RouteSettings? settings,
+    this.anchorPoint,
   }) : super(
          filter: filter,
          settings: settings,
@@ -1056,6 +1061,9 @@ class CupertinoModalPopupRoute<T> extends PopupRoute<T> {
 
   late Tween<Offset> _offsetTween;
 
+  /// {@macro flutter.widgets.DisplayFeatureSubScreen.anchorPoint}
+  final Offset? anchorPoint;
+
   @override
   Animation<double> createAnimation() {
     assert(_animation == null);
@@ -1078,7 +1086,10 @@ class CupertinoModalPopupRoute<T> extends PopupRoute<T> {
   Widget buildPage(BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
     return CupertinoUserInterfaceLevel(
       data: CupertinoUserInterfaceLevelData.elevated,
-      child: Builder(builder: builder),
+      child: DisplayFeatureSubScreen(
+        anchorPoint: anchorPoint,
+        child: Builder(builder: builder),
+      ),
     );
   }
 
@@ -1127,6 +1138,8 @@ class CupertinoModalPopupRoute<T> extends PopupRoute<T> {
 /// [StatefulBuilder] or a custom [StatefulWidget] if the widget needs to
 /// update dynamically.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// Returns a `Future` that resolves to the value that was passed to
 /// [Navigator.pop] when the popup was closed.
 ///
@@ -1151,6 +1164,8 @@ class CupertinoModalPopupRoute<T> extends PopupRoute<T> {
 ///
 /// See also:
 ///
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * [CupertinoActionSheet], which is the widget usually returned by the
 ///    `builder` argument to [showCupertinoModalPopup].
 ///  * <https://developer.apple.com/design/human-interface-guidelines/ios/views/action-sheets/>
@@ -1163,6 +1178,7 @@ Future<T?> showCupertinoModalPopup<T>({
   bool useRootNavigator = true,
   bool? semanticsDismissible,
   RouteSettings? routeSettings,
+  Offset? anchorPoint,
 }) {
   assert(useRootNavigator != null);
   return Navigator.of(context, rootNavigator: useRootNavigator).push(
@@ -1173,6 +1189,7 @@ Future<T?> showCupertinoModalPopup<T>({
       barrierDismissible: barrierDismissible,
       semanticsDismissible: semanticsDismissible,
       settings: routeSettings,
+      anchorPoint: anchorPoint,
     ),
   );
 }
@@ -1223,6 +1240,8 @@ Widget _buildCupertinoDialogTransitions(BuildContext context, Animation<double>
 /// By default, `useRootNavigator` is `true` and the dialog route created by
 /// this method is pushed to the root navigator.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// If the application has multiple [Navigator] objects, it may be necessary to
 /// call `Navigator.of(context, rootNavigator: true).pop(result)` to close the
 /// dialog rather than just `Navigator.pop(context, result)`.
@@ -1254,6 +1273,8 @@ Widget _buildCupertinoDialogTransitions(BuildContext context, Animation<double>
 ///  * [CupertinoAlertDialog], an iOS-style alert dialog.
 ///  * [showDialog], which displays a Material-style dialog.
 ///  * [showGeneralDialog], which allows for customization of the dialog popup.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * <https://developer.apple.com/ios/human-interface-guidelines/views/alerts/>
 Future<T?> showCupertinoDialog<T>({
   required BuildContext context,
@@ -1262,6 +1283,7 @@ Future<T?> showCupertinoDialog<T>({
   bool useRootNavigator = true,
   bool barrierDismissible = false,
   RouteSettings? routeSettings,
+  Offset? anchorPoint,
 }) {
   assert(builder != null);
   assert(useRootNavigator != null);
@@ -1273,6 +1295,7 @@ Future<T?> showCupertinoDialog<T>({
     barrierLabel: barrierLabel,
     barrierColor: CupertinoDynamicColor.resolve(kCupertinoModalBarrierColor, context),
     settings: routeSettings,
+    anchorPoint: anchorPoint,
   ));
 }
 
@@ -1303,12 +1326,16 @@ Future<T?> showCupertinoDialog<T>({
 /// The `settings` argument define the settings for this route. See
 /// [RouteSettings] for details.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// See also:
 ///
 ///  * [showCupertinoDialog], which is a way to display
 ///     an iOS-style dialog.
 ///  * [showGeneralDialog], which allows for customization of the dialog popup.
 ///  * [showDialog], which displays a Material dialog.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 class CupertinoDialogRoute<T> extends RawDialogRoute<T> {
   /// A dialog route that shows an iOS-style dialog.
   CupertinoDialogRoute({
@@ -1321,6 +1348,7 @@ class CupertinoDialogRoute<T> extends RawDialogRoute<T> {
     Duration transitionDuration = const Duration(milliseconds: 250),
     RouteTransitionsBuilder? transitionBuilder = _buildCupertinoDialogTransitions,
     RouteSettings? settings,
+    Offset? anchorPoint,
   }) : assert(barrierDismissible != null),
       super(
         pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
@@ -1332,5 +1360,6 @@ class CupertinoDialogRoute<T> extends RawDialogRoute<T> {
         transitionDuration: transitionDuration,
         transitionBuilder: transitionBuilder,
         settings: settings,
+        anchorPoint: anchorPoint,
       );
 }

packages/flutter/lib/src/material/about.dart

@@ -167,8 +167,9 @@ class AboutListTile extends StatelessWidget {
 /// The licenses shown on the [LicensePage] are those returned by the
 /// [LicenseRegistry] API, which can be used to add more licenses to the list.
 ///
-/// The [context], [useRootNavigator] and [routeSettings] arguments are passed to
-/// [showDialog], the documentation for which discusses how it is used.
+/// The [context], [useRootNavigator], [routeSettings] and [anchorPoint]
+/// arguments are passed to [showDialog], the documentation for which discusses
+/// how it is used.
 void showAboutDialog({
   required BuildContext context,
   String? applicationName,
@@ -178,6 +179,7 @@ void showAboutDialog({
   List<Widget>? children,
   bool useRootNavigator = true,
   RouteSettings? routeSettings,
+  Offset? anchorPoint,
 }) {
   assert(context != null);
   assert(useRootNavigator != null);
@@ -194,6 +196,7 @@ void showAboutDialog({
       );
     },
     routeSettings: routeSettings,
+    anchorPoint: anchorPoint,
   );
 }
 

packages/flutter/lib/src/material/bottom_sheet.dart

@@ -466,6 +466,7 @@ class _ModalBottomSheetRoute<T> extends PopupRoute<T> {
     required this.isScrollControlled,
     RouteSettings? settings,
     this.transitionAnimationController,
+    this.anchorPoint,
   }) : assert(isScrollControlled != null),
        assert(isDismissible != null),
        assert(enableDrag != null),
@@ -483,6 +484,7 @@ class _ModalBottomSheetRoute<T> extends PopupRoute<T> {
   final bool isDismissible;
   final bool enableDrag;
   final AnimationController? transitionAnimationController;
+  final Offset? anchorPoint;
 
   @override
   Duration get transitionDuration => _bottomSheetEnterDuration;
@@ -520,20 +522,23 @@ class _ModalBottomSheetRoute<T> extends PopupRoute<T> {
     final Widget bottomSheet = MediaQuery.removePadding(
       context: context,
       removeTop: true,
-      child: Builder(
-        builder: (BuildContext context) {
-          final BottomSheetThemeData sheetTheme = Theme.of(context).bottomSheetTheme;
-          return _ModalBottomSheet<T>(
-            route: this,
-            backgroundColor: backgroundColor ?? sheetTheme.modalBackgroundColor ?? sheetTheme.backgroundColor,
-            elevation: elevation ?? sheetTheme.modalElevation ?? sheetTheme.elevation,
-            shape: shape,
-            clipBehavior: clipBehavior,
-            constraints: constraints,
-            isScrollControlled: isScrollControlled,
-            enableDrag: enableDrag,
-          );
-        },
+      child: DisplayFeatureSubScreen(
+        anchorPoint: anchorPoint,
+        child: Builder(
+          builder: (BuildContext context) {
+            final BottomSheetThemeData sheetTheme = Theme.of(context).bottomSheetTheme;
+            return _ModalBottomSheet<T>(
+              route: this,
+              backgroundColor: backgroundColor ?? sheetTheme.modalBackgroundColor ?? sheetTheme.backgroundColor,
+              elevation: elevation ?? sheetTheme.modalElevation ?? sheetTheme.elevation,
+              shape: shape,
+              clipBehavior: clipBehavior,
+              constraints: constraints,
+              isScrollControlled: isScrollControlled,
+              enableDrag: enableDrag,
+            );
+          },
+        ),
       ),
     );
     return capturedThemes.wrap(bottomSheet);
@@ -645,6 +650,8 @@ class _BottomSheetSuspendedCurve extends ParametricCurve<double> {
 /// sheet. This is particularly useful in the case that a user wants to observe
 /// [PopupRoute]s within a [NavigatorObserver].
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// Returns a `Future` that resolves to the value (if any) that was passed to
 /// [Navigator.pop] when the modal bottom sheet was closed.
 ///
@@ -665,6 +672,8 @@ class _BottomSheetSuspendedCurve extends ParametricCurve<double> {
 ///    non-modal bottom sheets.
 ///  * [DraggableScrollableSheet], which allows you to create a bottom sheet
 ///    that grows and then becomes scrollable once it reaches its maximum size.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * <https://material.io/design/components/sheets-bottom.html#modal-bottom-sheet>
 Future<T?> showModalBottomSheet<T>({
   required BuildContext context,
@@ -681,6 +690,7 @@ Future<T?> showModalBottomSheet<T>({
   bool enableDrag = true,
   RouteSettings? routeSettings,
   AnimationController? transitionAnimationController,
+  Offset? anchorPoint,
 }) {
   assert(context != null);
   assert(builder != null);
@@ -707,6 +717,7 @@ Future<T?> showModalBottomSheet<T>({
     enableDrag: enableDrag,
     settings: routeSettings,
     transitionAnimationController: transitionAnimationController,
+    anchorPoint: anchorPoint,
   ));
 }
 

packages/flutter/lib/src/material/date_picker.dart

@@ -102,6 +102,8 @@ const double _inputFormLandscapeHeight = 108.0;
 /// [DatePickerMode.day] mode. It defaults to [DatePickerMode.day], and
 /// must be non-null.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// ### State Restoration
 ///
 /// Using this method will not enable state restoration for the date picker.
@@ -128,6 +130,8 @@ const double _inputFormLandscapeHeight = 108.0;
 ///    used to select a range of dates.
 ///  * [CalendarDatePicker], which provides the calendar grid used by the date picker dialog.
 ///  * [InputDatePickerFormField], which provides a text input field for entering dates.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * [showTimePicker], which shows a dialog that contains a material design time picker.
 ///
 Future<DateTime?> showDatePicker({
@@ -152,6 +156,7 @@ Future<DateTime?> showDatePicker({
   String? fieldHintText,
   String? fieldLabelText,
   TextInputType? keyboardType,
+  Offset? anchorPoint,
 }) async {
   assert(context != null);
   assert(initialDate != null);
@@ -221,6 +226,7 @@ Future<DateTime?> showDatePicker({
     builder: (BuildContext context) {
       return builder == null ? dialog : builder(context, dialog);
     },
+    anchorPoint: anchorPoint,
   );
 }
 
@@ -898,6 +904,8 @@ class _DatePickerHeader extends StatelessWidget {
 /// The [builder] parameter can be used to wrap the dialog widget
 /// to add inherited widgets like [Theme].
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// ### State Restoration
 ///
 /// Using this method will not enable state restoration for the date range picker.
@@ -923,7 +931,8 @@ class _DatePickerHeader extends StatelessWidget {
 ///  * [showDatePicker], which shows a material design date picker used to
 ///    select a single date.
 ///  * [DateTimeRange], which is used to describe a date range.
-///
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 Future<DateTimeRange?> showDateRangePicker({
   required BuildContext context,
   DateTimeRange? initialDateRange,
@@ -947,6 +956,7 @@ Future<DateTimeRange?> showDateRangePicker({
   RouteSettings? routeSettings,
   TextDirection? textDirection,
   TransitionBuilder? builder,
+  Offset? anchorPoint,
 }) async {
   assert(context != null);
   assert(
@@ -1029,6 +1039,7 @@ Future<DateTimeRange?> showDateRangePicker({
     builder: (BuildContext context) {
       return builder == null ? dialog : builder(context, dialog);
     },
+    anchorPoint: anchorPoint,
   );
 }
 

packages/flutter/lib/src/material/dialog.dart

@@ -1007,6 +1007,8 @@ Widget _buildMaterialDialogTransitions(BuildContext context, Animation<double> a
 /// The `routeSettings` argument is passed to [showGeneralDialog],
 /// see [RouteSettings] for details.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// If the application has multiple [Navigator] objects, it may be necessary to
 /// call `Navigator.of(context, rootNavigator: true).pop(result)` to close the
 /// dialog rather than just `Navigator.pop(context, result)`.
@@ -1041,6 +1043,8 @@ Widget _buildMaterialDialogTransitions(BuildContext context, Animation<double> a
 ///  * [Dialog], on which [SimpleDialog] and [AlertDialog] are based.
 ///  * [showCupertinoDialog], which displays an iOS-style dialog.
 ///  * [showGeneralDialog], which allows for customization of the dialog popup.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * <https://material.io/design/components/dialogs.html>
 Future<T?> showDialog<T>({
   required BuildContext context,
@@ -1051,6 +1055,7 @@ Future<T?> showDialog<T>({
   bool useSafeArea = true,
   bool useRootNavigator = true,
   RouteSettings? routeSettings,
+  Offset? anchorPoint,
 }) {
   assert(builder != null);
   assert(barrierDismissible != null);
@@ -1075,6 +1080,7 @@ Future<T?> showDialog<T>({
     useSafeArea: useSafeArea,
     settings: routeSettings,
     themes: themes,
+    anchorPoint: anchorPoint,
   ));
 }
 
@@ -1113,11 +1119,15 @@ Future<T?> showDialog<T>({
 /// The `settings` argument define the settings for this route. See
 /// [RouteSettings] for details.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// See also:
 ///
 ///  * [showDialog], which is a way to display a DialogRoute.
 ///  * [showGeneralDialog], which allows for customization of the dialog popup.
 ///  * [showCupertinoDialog], which displays an iOS-style dialog.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 class DialogRoute<T> extends RawDialogRoute<T> {
   /// A dialog route with Material entrance and exit animations,
   /// modal barrier color, and modal barrier behavior (dialog is dismissible
@@ -1131,6 +1141,7 @@ class DialogRoute<T> extends RawDialogRoute<T> {
     String? barrierLabel,
     bool useSafeArea = true,
     RouteSettings? settings,
+    Offset? anchorPoint,
   }) : assert(barrierDismissible != null),
        super(
          pageBuilder: (BuildContext buildContext, Animation<double> animation, Animation<double> secondaryAnimation) {
@@ -1147,6 +1158,7 @@ class DialogRoute<T> extends RawDialogRoute<T> {
          transitionDuration: const Duration(milliseconds: 150),
          transitionBuilder: _buildMaterialDialogTransitions,
          settings: settings,
+         anchorPoint: anchorPoint,
        );
 }
 

packages/flutter/lib/src/material/time_picker.dart

@@ -2365,6 +2365,8 @@ class _TimePickerDialogState extends State<TimePickerDialog> with RestorationMix
 /// [hourLabelText], [minuteLabelText] and [confirmText] can be provided to
 /// override the default values.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// By default, the time picker gets its colors from the overall theme's
 /// [ColorScheme]. The time picker can be further customized by providing a
 /// [TimePickerThemeData] to the overall theme.
@@ -2409,6 +2411,8 @@ class _TimePickerDialogState extends State<TimePickerDialog> with RestorationMix
 ///    date picker.
 ///  * [TimePickerThemeData], which allows you to customize the colors,
 ///    typography, and shape of the time picker.
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 Future<TimeOfDay?> showTimePicker({
   required BuildContext context,
   required TimeOfDay initialTime,
@@ -2423,6 +2427,7 @@ Future<TimeOfDay?> showTimePicker({
   String? minuteLabelText,
   RouteSettings? routeSettings,
   EntryModeChangeCallback? onEntryModeChanged,
+  Offset? anchorPoint,
 }) async {
   assert(context != null);
   assert(initialTime != null);
@@ -2448,6 +2453,7 @@ Future<TimeOfDay?> showTimePicker({
       return builder == null ? dialog : builder(context, dialog);
     },
     routeSettings: routeSettings,
+    anchorPoint: anchorPoint,
   );
 }
 

packages/flutter/lib/src/widgets/display_feature_sub_screen.dart

@@ -27,14 +27,14 @@ import 'media_query.dart';
 ///     bottom sub-screen
 ///
 /// After determining the sub-screens, the closest one to [anchorPoint] is used
-/// to render the [child].
+/// to render the content.
 ///
 /// If no [anchorPoint] is provided, then [Directionality] is used:
 ///
 ///   * for [TextDirection.ltr], [anchorPoint] is `Offset.zero`, which will
-///     cause the [child] to appear in the top-left sub-screen.
+///     cause the content to appear in the top-left sub-screen.
 ///   * for [TextDirection.rtl], [anchorPoint] is `Offset(double.maxFinite, 0)`,
-///     which will cause the [child] to appear in the top-right sub-screen.
+///     which will cause the content to appear in the top-right sub-screen.
 ///
 /// If no [anchorPoint] is provided, and there is no [Directionality] ancestor
 /// widget in the tree, then the widget asserts during build in debug mode.
@@ -58,6 +58,7 @@ class DisplayFeatureSubScreen extends StatelessWidget {
     required this.child,
   }) : super(key: key);
 
+  /// {@template flutter.widgets.DisplayFeatureSubScreen.anchorPoint}
   /// The anchor point used to pick the closest sub-screen.
   ///
   /// If the anchor point sits inside one of these sub-screens, then that
@@ -75,6 +76,7 @@ class DisplayFeatureSubScreen extends StatelessWidget {
   ///   * for [TextDirection.rtl], [anchorPoint] is
   ///     `Offset(double.maxFinite, 0)`, which will cause the top-right
   ///     sub-screen to be picked.
+  /// {@endtemplate}
   final Offset? anchorPoint;
 
   /// The widget below this widget in the tree.

packages/flutter/lib/src/widgets/routes.dart

@@ -13,6 +13,7 @@ import 'package:flutter/services.dart';
 
 import 'actions.dart';
 import 'basic.dart';
+import 'display_feature_sub_screen.dart';
 import 'focus_manager.dart';
 import 'focus_scope.dart';
 import 'framework.dart';
@@ -1864,8 +1865,25 @@ abstract class RouteAware {
 /// The `settings` argument define the settings for this route. See
 /// [RouteSettings] for details.
 ///
+/// {@template flutter.widgets.RawDialogRoute}
+/// A [DisplayFeature] can split the screen into sub-screens. The closest one to
+/// [anchorPoint] is used to render the content.
+///
+/// If no [anchorPoint] is provided, then [Directionality] is used:
+///
+///   * for [TextDirection.ltr], [anchorPoint] is `Offset.zero`, which will
+///     cause the content to appear in the top-left sub-screen.
+///   * for [TextDirection.rtl], [anchorPoint] is `Offset(double.maxFinite, 0)`,
+///     which will cause the content to appear in the top-right sub-screen.
+///
+/// If no [anchorPoint] is provided, and there is no [Directionality] ancestor
+/// widget in the tree, then the widget asserts during build in debug mode.
+/// {@endtemplate}
+///
 /// See also:
 ///
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * [showGeneralDialog], which is a way to display a RawDialogRoute.
 ///  * [showDialog], which is a way to display a DialogRoute.
 ///  * [showCupertinoDialog], which displays an iOS-style dialog.
@@ -1879,6 +1897,7 @@ class RawDialogRoute<T> extends PopupRoute<T> {
     Duration transitionDuration = const Duration(milliseconds: 200),
     RouteTransitionsBuilder? transitionBuilder,
     RouteSettings? settings,
+    this.anchorPoint,
   }) : assert(barrierDismissible != null),
        _pageBuilder = pageBuilder,
        _barrierDismissible = barrierDismissible,
@@ -1908,12 +1927,18 @@ class RawDialogRoute<T> extends PopupRoute<T> {
 
   final RouteTransitionsBuilder? _transitionBuilder;
 
+  /// {@macro flutter.widgets.DisplayFeatureSubScreen.anchorPoint}
+  final Offset? anchorPoint;
+
   @override
   Widget buildPage(BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
     return Semantics(
       scopesRoute: true,
       explicitChildNodes: true,
-      child: _pageBuilder(context, animation, secondaryAnimation),
+      child: DisplayFeatureSubScreen(
+        anchorPoint: anchorPoint,
+        child: _pageBuilder(context, animation, secondaryAnimation),
+      ),
     );
   }
 
@@ -1979,6 +2004,8 @@ class RawDialogRoute<T> extends PopupRoute<T> {
 /// The `routeSettings` will be used in the construction of the dialog's route.
 /// See [RouteSettings] for more details.
 ///
+/// {@macro flutter.widgets.RawDialogRoute}
+///
 /// Returns a [Future] that resolves to the value (if any) that was passed to
 /// [Navigator.pop] when the dialog was closed.
 ///
@@ -2003,6 +2030,8 @@ class RawDialogRoute<T> extends PopupRoute<T> {
 ///
 /// See also:
 ///
+///  * [DisplayFeatureSubScreen], which documents the specifics of how
+///    [DisplayFeature]s can split the screen into sub-screens.
 ///  * [showDialog], which displays a Material-style dialog.
 ///  * [showCupertinoDialog], which displays an iOS-style dialog.
 Future<T?> showGeneralDialog<T extends Object?>({
@@ -2015,6 +2044,7 @@ Future<T?> showGeneralDialog<T extends Object?>({
   RouteTransitionsBuilder? transitionBuilder,
   bool useRootNavigator = true,
   RouteSettings? routeSettings,
+  Offset? anchorPoint,
 }) {
   assert(pageBuilder != null);
   assert(useRootNavigator != null);
@@ -2027,6 +2057,7 @@ Future<T?> showGeneralDialog<T extends Object?>({
     transitionDuration: transitionDuration,
     transitionBuilder: transitionBuilder,
     settings: routeSettings,
+    anchorPoint: anchorPoint,
   ));
 }
 

packages/flutter/test/cupertino/dialog_test.dart

@@ -7,6 +7,7 @@
 @Tags(<String>['reduced-test-set'])
 
 import 'dart:math';
+import 'dart:ui';
 
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
@@ -1317,6 +1318,123 @@ void main() {
     expect(scrollbars.length, 2);
     expect(scrollbars[0].controller != scrollbars[1].controller, isTrue);
   });
+
+  group('showCupertinoDialog avoids overlapping display features', () {
+    testWidgets('positioning using anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning using Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('default positioning', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(390.0, 600.0));
+    });
+  });
 }
 
 RenderBox findActionButtonRenderBoxByTitle(WidgetTester tester, String title) {

packages/flutter/test/cupertino/route_test.dart

@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 @TestOn('!chrome')
+import 'dart:ui';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -1881,6 +1883,240 @@ void main() {
     await tester.restoreFrom(restorationData);
     expect(find.byType(CupertinoActionSheet), findsOneWidget);
   }, skip: isBrowser); // https://github.com/flutter/flutter/issues/33615
+
+  group('showCupertinoDialog avoids overlapping display features', () {
+    testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // Since this is RTL, it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning by default', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showCupertinoDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(390.0, 600.0));
+    });
+  });
+
+  group('showCupertinoModalPopup avoids overlapping display features', () {
+    testWidgets('positioning using anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoModalPopup<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 410);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 800);
+    });
+
+    testWidgets('positioning using Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoModalPopup<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // This is RTL, so it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 410);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 800);
+    });
+
+    testWidgets('default positioning', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        CupertinoApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showCupertinoModalPopup<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 0.0);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 390.0);
+    });
+  });
 }
 
 class MockNavigatorObserver extends NavigatorObserver {

packages/flutter/test/material/about_test.dart

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
+import 'dart:ui';
 
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
@@ -593,6 +594,135 @@ void main() {
     expect(nestedObserver.dialogCount, 1);
   });
 
+  group('showAboutDialog avoids overlapping display features', () {
+    testWidgets('default positioning', (WidgetTester tester) async {
+      await tester.pumpWidget(MaterialApp(
+        builder: (BuildContext context, Widget? child) {
+          return MediaQuery(
+            // Display has a vertical hinge down the middle
+            data: const MediaQueryData(
+              size: Size(800, 600),
+              displayFeatures: <DisplayFeature>[
+                DisplayFeature(
+                  bounds: Rect.fromLTRB(390, 0, 410, 600),
+                  type: DisplayFeatureType.hinge,
+                  state: DisplayFeatureState.unknown,
+                ),
+              ],
+            ),
+            child: child!,
+          );
+        },
+        home: Builder(
+          builder: (BuildContext context) => ElevatedButton(
+            onPressed: () {
+              showAboutDialog(
+                context: context,
+                useRootNavigator: false,
+                applicationName: 'A',
+              );
+            },
+            child: const Text('Show About Dialog'),
+          ),
+        ),
+      ));
+
+      // Open the dialog.
+      await tester.tap(find.byType(ElevatedButton));
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(AboutDialog)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(390.0, 600.0));
+    });
+
+    testWidgets('positioning using anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(MaterialApp(
+        builder: (BuildContext context, Widget? child) {
+          return MediaQuery(
+            // Display has a vertical hinge down the middle
+            data: const MediaQueryData(
+              size: Size(800, 600),
+              displayFeatures: <DisplayFeature>[
+                DisplayFeature(
+                  bounds: Rect.fromLTRB(390, 0, 410, 600),
+                  type: DisplayFeatureType.hinge,
+                  state: DisplayFeatureState.unknown,
+                ),
+              ],
+            ),
+            child: child!,
+          );
+        },
+        home: Builder(
+          builder: (BuildContext context) => ElevatedButton(
+            onPressed: () {
+              showAboutDialog(
+                context: context,
+                useRootNavigator: false,
+                applicationName: 'A',
+                anchorPoint: const Offset(1000, 0),
+              );
+            },
+            child: const Text('Show About Dialog'),
+          ),
+        ),
+      ));
+
+      // Open the dialog.
+      await tester.tap(find.byType(ElevatedButton));
+      await tester.pumpAndSettle();
+
+      // The anchorPoint hits the right side of the display
+      expect(tester.getTopLeft(find.byType(AboutDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning using Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(MaterialApp(
+        builder: (BuildContext context, Widget? child) {
+          return MediaQuery(
+            // Display has a vertical hinge down the middle
+            data: const MediaQueryData(
+              size: Size(800, 600),
+              displayFeatures: <DisplayFeature>[
+                DisplayFeature(
+                  bounds: Rect.fromLTRB(390, 0, 410, 600),
+                  type: DisplayFeatureType.hinge,
+                  state: DisplayFeatureState.unknown,
+                ),
+              ],
+            ),
+            child: Directionality(
+              textDirection: TextDirection.rtl,
+              child: child!,
+            ),
+          );
+        },
+        home: Builder(
+          builder: (BuildContext context) => ElevatedButton(
+            onPressed: () {
+              showAboutDialog(
+                context: context,
+                useRootNavigator: false,
+                applicationName: 'A',
+              );
+            },
+            child: const Text('Show About Dialog'),
+          ),
+        ),
+      ));
+
+      // Open the dialog.
+      await tester.tap(find.byType(ElevatedButton));
+      await tester.pumpAndSettle();
+
+      // Since this is rtl, the first screen is the on the right
+      expect(tester.getTopLeft(find.byType(AboutDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(800.0, 600.0));
+    });
+  });
+
   testWidgets("AboutListTile's child should not be offset when the icon is not specified.", (WidgetTester tester) async {
     await tester.pumpWidget(
       const MaterialApp(

packages/flutter/test/material/bottom_sheet_test.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:ui';
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -1254,6 +1256,123 @@ void main() {
     await tester.tap(find.text('close 1'));
     await tester.pumpAndSettle();
     expect(find.text('BottomSheet 2'), findsOneWidget);
+    });
+
+  group('Modal BottomSheet avoids overlapping display features', () {
+    testWidgets('positioning using anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showModalBottomSheet<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 410);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 800);
+    });
+
+    testWidgets('positioning using Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showModalBottomSheet<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // This is RTL, so it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 410);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 800);
+    });
+
+    testWidgets('default positioning', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showModalBottomSheet<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(Placeholder)).dx, 0.0);
+      expect(tester.getBottomRight(find.byType(Placeholder)).dx, 390.0);
+    });
   });
 
   group('constraints', () {

packages/flutter/test/material/date_picker_test.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:ui';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -1136,6 +1138,123 @@ void main() {
     });
   });
 
+  group('showDatePicker avoids overlapping display features', () {
+    testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDatePicker(
+        context: context,
+        initialDate: DateTime.now(),
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(DatePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(DatePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDatePicker(
+        context: context,
+        initialDate: DateTime.now(),
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(DatePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(DatePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with defaults', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDatePicker(
+        context: context,
+        initialDate: DateTime.now(),
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(DatePickerDialog)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(DatePickerDialog)), const Offset(390.0, 600.0));
+    });
+  });
+
   testWidgets('DatePickerDialog is state restorable', (WidgetTester tester) async {
     await tester.pumpWidget(
       const MaterialApp(

packages/flutter/test/material/date_range_picker_test.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:ui';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -959,6 +961,121 @@ void main() {
     expect(find.byType(TextField), findsNothing);
     expect(find.byIcon(Icons.edit), findsNothing);
   }, skip: isBrowser); // https://github.com/flutter/flutter/issues/33615
+
+  group('showDateRangePicker avoids overlapping display features', () {
+    testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDateRangePicker(
+        context: context,
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(DateRangePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(DateRangePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDateRangePicker(
+        context: context,
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(DateRangePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(DateRangePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with defaults', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+
+      final BuildContext context = tester.element(find.text('Test'));
+      showDateRangePicker(
+        context: context,
+        firstDate: DateTime(2018),
+        lastDate: DateTime(2030),
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(DateRangePickerDialog)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(DateRangePickerDialog)), const Offset(390.0, 600.0));
+    });
+  });
 }
 
 class _RestorableDateRangePickerDialogTestWidget extends StatefulWidget {

packages/flutter/test/material/dialog_test.dart

@@ -1921,6 +1921,123 @@ void main() {
     expect(nestedObserver.dialogCount, 1);
   });
 
+  group('showDialog avoids overlapping display features', () {
+    testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+        anchorPoint: const Offset(1000, 0),
+      );
+      await tester.pumpAndSettle();
+
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // Since this is RTL, it should place the dialog on the right screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning by default', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return const Placeholder();
+        },
+      );
+      await tester.pumpAndSettle();
+
+      // By default it should place the dialog on the left screen
+      expect(tester.getTopLeft(find.byType(Placeholder)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(390.0, 600.0));
+    });
+  });
+
   group('AlertDialog.scrollable: ', () {
     testWidgets('Title is scrollable', (WidgetTester tester) async {
       final Key titleKey = UniqueKey();

packages/flutter/test/material/time_picker_test.dart

@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 @TestOn('!chrome')
+import 'dart:ui';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -849,6 +851,117 @@ void _tests() {
     expect(tester.getSize(find.text('41')).height, equals(minutesDisplayHeight));
     expect(tester.getSize(find.text('AM')).height, equals(amHeight2x));
   });
+
+  group('showTimePicker avoids overlapping display features', () {
+    testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      showTimePicker(
+        context: context,
+        initialTime: const TimeOfDay(hour: 7, minute: 0),
+        anchorPoint: const Offset(1000, 0),
+      );
+
+      await tester.pumpAndSettle();
+      // Should take the right side of the screen
+      expect(tester.getTopLeft(find.byType(TimePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(TimePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with Directionality', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: Directionality(
+                textDirection: TextDirection.rtl,
+                child: child!,
+              ),
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      // By default it should place the dialog on the right screen
+      showTimePicker(
+        context: context,
+        initialTime: const TimeOfDay(hour: 7, minute: 0),
+      );
+
+      await tester.pumpAndSettle();
+      expect(tester.getTopLeft(find.byType(TimePickerDialog)), const Offset(410.0, 0.0));
+      expect(tester.getBottomRight(find.byType(TimePickerDialog)), const Offset(800.0, 600.0));
+    });
+
+    testWidgets('positioning with defaults', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          builder: (BuildContext context, Widget? child) {
+            return MediaQuery(
+              // Display has a vertical hinge down the middle
+              data: const MediaQueryData(
+                size: Size(800, 600),
+                displayFeatures: <DisplayFeature>[
+                  DisplayFeature(
+                    bounds: Rect.fromLTRB(390, 0, 410, 600),
+                    type: DisplayFeatureType.hinge,
+                    state: DisplayFeatureState.unknown,
+                  ),
+                ],
+              ),
+              child: child!,
+            );
+          },
+          home: const Center(child: Text('Test')),
+        ),
+      );
+      final BuildContext context = tester.element(find.text('Test'));
+
+      // By default it should place the dialog on the left screen
+      showTimePicker(
+        context: context,
+        initialTime: const TimeOfDay(hour: 7, minute: 0),
+      );
+
+      await tester.pumpAndSettle();
+      expect(tester.getTopLeft(find.byType(TimePickerDialog)), Offset.zero);
+      expect(tester.getBottomRight(find.byType(TimePickerDialog)), const Offset(390.0, 600.0));
+    });
+  });
 }
 
 void _testsInput() {

packages/flutter/test/widgets/routes_test.dart

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:collection';
+import 'dart:ui';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -1190,6 +1191,123 @@ void main() {
       expect(route.transitionDuration, isNotNull);
     });
 
+    group('showGeneralDialog avoids overlapping display features', () {
+      testWidgets('positioning with anchorPoint', (WidgetTester tester) async {
+        await tester.pumpWidget(
+          MaterialApp(
+            builder: (BuildContext context, Widget? child) {
+              return MediaQuery(
+                // Display has a vertical hinge down the middle
+                data: const MediaQueryData(
+                  size: Size(800, 600),
+                  displayFeatures: <DisplayFeature>[
+                    DisplayFeature(
+                      bounds: Rect.fromLTRB(390, 0, 410, 600),
+                      type: DisplayFeatureType.hinge,
+                      state: DisplayFeatureState.unknown,
+                    ),
+                  ],
+                ),
+                child: child!,
+              );
+            },
+            home: const Center(child: Text('Test')),
+          ),
+        );
+        final BuildContext context = tester.element(find.text('Test'));
+
+        showGeneralDialog<void>(
+          context: context,
+          pageBuilder: (BuildContext context, _, __) {
+            return const Placeholder();
+          },
+          anchorPoint: const Offset(1000, 0),
+        );
+        await tester.pumpAndSettle();
+
+        // Should take the right side of the screen
+        expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+        expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+      });
+
+      testWidgets('positioning with Directionality', (WidgetTester tester) async {
+        await tester.pumpWidget(
+          MaterialApp(
+            builder: (BuildContext context, Widget? child) {
+              return MediaQuery(
+                // Display has a vertical hinge down the middle
+                data: const MediaQueryData(
+                  size: Size(800, 600),
+                  displayFeatures: <DisplayFeature>[
+                    DisplayFeature(
+                      bounds: Rect.fromLTRB(390, 0, 410, 600),
+                      type: DisplayFeatureType.hinge,
+                      state: DisplayFeatureState.unknown,
+                    ),
+                  ],
+                ),
+                child: Directionality(
+                  textDirection: TextDirection.rtl,
+                  child: child!,
+                ),
+              );
+            },
+            home: const Center(child: Text('Test')),
+          ),
+        );
+        final BuildContext context = tester.element(find.text('Test'));
+
+        showGeneralDialog<void>(
+          context: context,
+          pageBuilder: (BuildContext context, _, __) {
+            return const Placeholder();
+          },
+        );
+        await tester.pumpAndSettle();
+
+        // Since this is RTL, it should place the dialog on the right screen
+        expect(tester.getTopLeft(find.byType(Placeholder)), const Offset(410.0, 0.0));
+        expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
+      });
+
+      testWidgets('positioning by default', (WidgetTester tester) async {
+        await tester.pumpWidget(
+          MaterialApp(
+            builder: (BuildContext context, Widget? child) {
+              return MediaQuery(
+                // Display has a vertical hinge down the middle
+                data: const MediaQueryData(
+                  size: Size(800, 600),
+                  displayFeatures: <DisplayFeature>[
+                    DisplayFeature(
+                      bounds: Rect.fromLTRB(390, 0, 410, 600),
+                      type: DisplayFeatureType.hinge,
+                      state: DisplayFeatureState.unknown,
+                    ),
+                  ],
+                ),
+                child: child!,
+              );
+            },
+            home: const Center(child: Text('Test')),
+          ),
+        );
+        final BuildContext context = tester.element(find.text('Test'));
+
+        showGeneralDialog<void>(
+          context: context,
+          pageBuilder: (BuildContext context, _, __) {
+            return const Placeholder();
+          },
+        );
+        await tester.pumpAndSettle();
+
+        // By default it should place the dialog on the left screen
+        expect(tester.getTopLeft(find.byType(Placeholder)), Offset.zero);
+        expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(390.0, 600.0));
+      });
+    });
+
     testWidgets('reverseTransitionDuration defaults to transitionDuration', (WidgetTester tester) async {
       final GlobalKey containerKey = GlobalKey();