Added autoFlipDuration parameter

README.md

@@ -84,3 +84,19 @@ void doStuff() {
   _controller.toggleCard();
 }
 ```
+
+You can auto-flip the widget after a certain delay without any external triggering.
+```dart
+FlipCard(
+  fill: Fill.fillBack, // Fill the back side of the card to make in the same size as the front.
+  direction: FlipDirection.HORIZONTAL, // default
+  side: CardSide.FRONT, // The side to initially display.
+  front: Container(
+    child: Text('Front'),
+  ),
+  back: Container(
+    child: Text('Back'),
+  ),
+  autoFlipDuration: const Duration(seconds: 2), // The flip effect will work automatically after the 2 seconds
+);
+```

lib/flip_card.dart

@@ -61,6 +61,9 @@ class FlipCard extends StatefulWidget {
   final Fill fill;
   final CardSide side;
 
+  /// If the value is set, the flip effect will work automatically after the specified duration.
+  final Duration? autoFlipDuration;
+
   /// When enabled, the card will flip automatically when touched. This behavior
   /// can be disabled if this is not desired. To manually flip a card from your
   /// code, you could do this:
@@ -101,6 +104,7 @@ class FlipCard extends StatefulWidget {
     this.alignment = Alignment.center,
     this.fill = Fill.none,
     this.side = CardSide.FRONT,
+    this.autoFlipDuration,
   }) : super(key: key);
 
   @override
@@ -155,6 +159,10 @@ class FlipCardState extends State<FlipCard>
     ).animate(controller!);
 
     widget.controller?.state = this;
+
+    if (widget.autoFlipDuration != null) {
+      Future.delayed(widget.autoFlipDuration!, toggleCard);
+    }
   }
 
   @override