Merge pull request #15 from zim32/zim32-patch-2

Add parameter to control transition duration

lib/src/page_route.dart

@@ -20,7 +20,9 @@ class SwipeablePageRoute<T> extends CupertinoPageRoute<T> {
     RouteSettings? settings,
     bool maintainState = true,
     bool fullscreenDialog = false,
-  }) : super(
+    Duration? transitionDuration,
+  })  : _transitionDuration = transitionDuration,
+        super(
           builder: builder,
           title: title,
           settings: settings,
@@ -32,6 +34,12 @@ class SwipeablePageRoute<T> extends CupertinoPageRoute<T> {
   ///
   /// Set this to `false` to disable swiping completely.
   bool canSwipe;
+  /// An optional override for the [transitionDuration].
+  final Duration? _transitionDuration;
+
+  @override
+  Duration get transitionDuration =>
+      _transitionDuration ?? super.transitionDuration;
 
   /// Whether only back gestures close to the left (LTR) or right (RTL) screen
   /// edge are counted.