added focus change listener for android

android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />
 
    <application
         android:label="Quid faciam hodie?"

android/app/src/main/kotlin/com/example/share_location/MainActivity.kt

@@ -1,6 +1,37 @@
 package floss.myzel394.quid_faciam_hodie
 
+import android.annotation.SuppressLint
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
+
 
 class MainActivity: FlutterActivity() {
+    val CHANNEL_ID = "floss.myzel394.quid_faciam_hodie/window_focus"
+
+    private var channel: MethodChannel? = null
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        setupChannel(flutterEngine)
+    }
+
+    override fun cleanUpFlutterEngine(flutterEngine: FlutterEngine) {
+        super.cleanUpFlutterEngine(flutterEngine)
+        teardownChannel()
+    }
+
+    @SuppressLint("WrongConstant")
+    override fun onWindowFocusChanged(hasFocus: Boolean) {
+        channel?.invokeMethod("windowFocusChanged", hasFocus)
+    }
+
+    private fun setupChannel(flutterEngine: FlutterEngine) {
+        channel = MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL_ID)
+    }
+
+    private fun teardownChannel() {
+        channel?.setMethodCallHandler(null)
+        channel = null
+    }
 }

lib/widgets/status.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:quid_faciam_hodie/constants/spacing.dart';
 import 'package:quid_faciam_hodie/controllers/status_controller.dart';
+import 'package:quid_faciam_hodie/native_events/window_focus.dart';
 
 const BAR_HEIGHT = 4.0;
 
@@ -11,6 +12,7 @@ class Status extends StatefulWidget {
   final bool hideProgressBar;
   final bool autoStart;
   final bool isIndeterminate;
+  final bool pauseOnLostFocus;
   final VoidCallback? onEnd;
   final Duration duration;
 
@@ -21,6 +23,7 @@ class Status extends StatefulWidget {
     this.hideProgressBar = false,
     this.autoStart = false,
     this.isIndeterminate = false,
+    this.pauseOnLostFocus = true,
     this.duration = const Duration(seconds: 5),
     this.onEnd,
     this.controller,
@@ -31,6 +34,8 @@ class Status extends StatefulWidget {
 }
 
 class _StatusState extends State<Status> with TickerProviderStateMixin {
+  bool _wasAnimatingBeforeLostFocus = false;
+
   Animation<double>? animation;
   AnimationController? animationController;
 
@@ -60,6 +65,20 @@ class _StatusState extends State<Status> with TickerProviderStateMixin {
   void initState() {
     super.initState();
 
+    EventChannelWindowFocus.setGlobalListener((hasFocus) {
+      if (!widget.pauseOnLostFocus) {
+        return;
+      }
+
+      if (hasFocus && _wasAnimatingBeforeLostFocus) {
+        animationController?.forward();
+      } else if (!hasFocus) {
+        _wasAnimatingBeforeLostFocus =
+            animationController?.isAnimating ?? false;
+        animationController?.stop();
+      }
+    });
+
     if (widget.autoStart) {
       initializeAnimation();
     }