firka_wear: add rotary support

firka_wear/android/app/src/main/kotlin/app/firka/naplo/MainActivity.kt

@@ -1,5 +1,6 @@
 package app.firka.naplo
 
+import android.view.MotionEvent
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.app.PendingIntent
@@ -10,6 +11,7 @@ import android.os.Bundle
 import androidx.core.app.NotificationCompat
 import androidx.wear.ongoing.OngoingActivity
 import androidx.wear.ongoing.Status
+import com.samsung.wearable_rotary.WearableRotaryPlugin
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
 import io.flutter.plugin.common.MethodChannel
@@ -89,4 +91,10 @@ class MainActivity : FlutterActivity() {
         window.clearFlags(android.view.WindowManager.LayoutParams.FLAG_SECURE)
     }
 
+    override fun onGenericMotionEvent(event: MotionEvent?): Boolean {
+        return when {
+            WearableRotaryPlugin.onGenericMotionEvent(event) -> true
+            else -> super.onGenericMotionEvent(event)
+        }
+    }
 }

firka_wear/lib/ui/wear/screens/home/home_screen.dart

@@ -9,6 +9,7 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:kreta_api/kreta_api.dart';
 import 'package:watch_connectivity/watch_connectivity.dart';
+import 'package:wearable_rotary/wearable_rotary.dart';
 import 'package:wear_plus/wear_plus.dart';
 
 import 'package:firka_wear/app/app_state.dart';
@@ -45,6 +46,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
   final platform = MethodChannel('firka.app/main');
   final watch = WatchConnectivity();
   StreamSubscription? _messageSub;
+  StreamSubscription<RotaryEvent>? _rotarySub;
   WearSyncCubit? _syncCubit;
   late final PageController _pageController;
 
@@ -79,9 +81,28 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
         now = timeNow();
       });
     });
+    _rotarySub = rotaryEvents.listen(_onRotaryEvent);
     initStateAsync();
   }
 
+  void _onRotaryEvent(RotaryEvent event) {
+    if (!_pageController.hasClients) return;
+    final pos = _pageController.position;
+    final pageCount = (pos.maxScrollExtent / pos.viewportDimension).round() + 1;
+    final currentPage = (_pageController.page ?? 0).round();
+    final nextPage = event.direction == RotaryDirection.clockwise
+        ? (currentPage + 1).clamp(0, pageCount - 1)
+        : (currentPage - 1).clamp(0, pageCount - 1);
+    if (nextPage != currentPage) {
+      HapticFeedback.lightImpact();
+      _pageController.animateToPage(
+        nextPage,
+        duration: const Duration(milliseconds: 250),
+        curve: Curves.easeInOutCirc,
+      );
+    }
+  }
+
   void _onSyncData(Map<String, dynamic> msg) async {
     if (disposed) return;
     _syncCubit?.setSyncing(true);
@@ -624,6 +645,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
   @override
   void dispose() {
     _messageSub?.cancel();
+    _rotarySub?.cancel();
     timer?.cancel();
     _pageController.dispose();
     disposed = true;

firka_wear/pubspec.yaml

@@ -45,6 +45,7 @@ dependencies:
   carousel_slider: ^5.0.0
   dart_jsonwebtoken: ^3.2.0
   wear_plus: ^1.2.4
+  wearable_rotary: ^2.0.4
   majesticons_flutter: ^0.0.1
   watch_connectivity: ^0.2.1+1
   permission_handler: ^12.0.1