Merge branch 'mourad-brahim-master'

.github/workflows/greetings.yml

@@ -0,0 +1,13 @@
+name: Greetings
+
+on: [pull_request, issues]
+
+jobs:
+  greeting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/first-interaction@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          issue-message: 'Hey, Thanks for creating the first issue. I will respond in a day or two. If doesn''t, feel free to ping me.'
+          pr-message: 'Hey, Thanks for creating the first Pull Request. I will respond in a day or two. If doesn''t, feel free to ping me.'

example/lib/main.dart

@@ -10,6 +10,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
+
   final pages = [
     Container(
       color: Colors.pink,
@@ -212,7 +213,7 @@ class MyApp extends StatelessWidget {
       ),
     ),
   ];
-
+  int page = 0;
   @override
   Widget build(BuildContext context) {
     return new MaterialApp(
@@ -224,6 +225,11 @@ class MyApp extends StatelessWidget {
               enableLoop: false,
               positionSlideIcon: 0.5,
               waveType: WaveType.liquidReveal,
+              onPageChangeCallback: (page) => pageChangeCallback(page),
             )));
   }
+
+  pageChangeCallback(int page) {
+    print(page);
+  }
 }

lib/liquid_swipe.dart

@@ -11,6 +11,8 @@ import 'Constants/Helpers.dart';
 
 final key = new GlobalKey<_LiquidSwipe>();
 
+typedef OnPageChangeCallback = void Function(int activePageIndex);
+
 class LiquidSwipe extends StatefulWidget {
   final List<Container> pages;
   final double fullTransitionValue;
@@ -21,6 +23,8 @@ class LiquidSwipe extends StatefulWidget {
   final bool enableLoop;
   final WaveType waveType;
 
+  final OnPageChangeCallback onPageChangeCallback;
+
   const LiquidSwipe({
     Key key,
     @required this.pages,
@@ -31,7 +35,9 @@ class LiquidSwipe extends StatefulWidget {
     this.positionSlideIcon = 0.54,
     this.enableLoop = true,
     this.waveType = WaveType.liquidReveal,
+    this.onPageChangeCallback,
   })  : assert(pages != null),
+        assert(onPageChangeCallback != null),
         assert(fullTransitionValue != null),
         assert(initialPage != null &&
             initialPage >= 0 &&
@@ -71,6 +77,12 @@ class _LiquidSwipe extends State<LiquidSwipe> with TickerProviderStateMixin {
       slidePercentVer = 0.0; //slide percentage (0.0 to 1.0)
   StreamSubscription<SlideUpdate> slideUpdateStream$;
 
+  set setActivePageIndex(int value) {
+    activePageIndex = value;
+
+    widget.onPageChangeCallback(activePageIndex);
+  }
+
   @override
   void initState() {
     slidePercentHor = slidePercentVer = 0;
@@ -152,6 +164,7 @@ class _LiquidSwipe extends State<LiquidSwipe> with TickerProviderStateMixin {
         //done animating
         else if (event.updateType == UpdateType.doneAnimating) {
           activePageIndex = nextPageIndex;
+          widget.onPageChangeCallback(activePageIndex);
           slideDirection = SlideDirection.none;
           slidePercentHor = 0.5;
           slidePercentVer = widget.positionSlideIcon;
@@ -208,11 +221,4 @@ class _LiquidSwipe extends State<LiquidSwipe> with TickerProviderStateMixin {
       ), //Stack
     ); //Scaffold
   }
-
-  next() {
-    _LiquidSwipe().setState(() {
-      activePageIndex += 1;
-      nextPageIndex = activePageIndex + 1;
-    });
-  }
 }