screen saver POC

android/app/src/debug/res/xml/screen_saver.xml

@@ -1,2 +1,2 @@
 <dream xmlns:android="http://schemas.android.com/apk/res/android"
-    android:settingsActivity="com.example.app/.ScreenSaverSettingsActivity" />
+    android:settingsActivity="deckers.thibault.aves.debug/deckers.thibault.aves.ScreenSaverSettingsActivity" />

android/app/src/main/AndroidManifest.xml

@@ -141,6 +141,11 @@ This change eventually prevents building the app with Flutter v3.0.2.
                 android:resource="@xml/searchable" />
         </activity>
 
+        <activity
+            android:name=".ScreenSaverSettingsActivity"
+            android:exported="true"
+            android:theme="@style/NormalTheme" />
+
         <activity
             android:name=".WallpaperActivity"
             android:exported="true"
@@ -165,6 +170,22 @@ This change eventually prevents building the app with Flutter v3.0.2.
             android:description="@string/analysis_service_description"
             android:exported="false" />
 
+        <service
+            android:name=".ScreenSaverService"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_DREAM_SERVICE">
+            <intent-filter>
+                <action android:name="android.service.dreams.DreamService" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.service.dream"
+                android:resource="@xml/screen_saver" />
+        </service>
+
         <!-- file provider to share files having a file:// URI -->
         <provider
             android:name="androidx.core.content.FileProvider"

android/app/src/main/kotlin/deckers/thibault/aves/MainActivity.kt

@@ -28,7 +28,7 @@ import io.flutter.plugin.common.MethodChannel
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.ConcurrentHashMap
 
-class MainActivity : FlutterActivity() {
+open class MainActivity : FlutterActivity() {
     private lateinit var mediaStoreChangeStreamHandler: MediaStoreChangeStreamHandler
     private lateinit var settingsChangeStreamHandler: SettingsChangeStreamHandler
     private lateinit var intentStreamHandler: IntentStreamHandler
@@ -203,7 +203,7 @@ class MainActivity : FlutterActivity() {
         }
     }
 
-    private fun extractIntentData(intent: Intent?): MutableMap<String, Any?> {
+    open fun extractIntentData(intent: Intent?): MutableMap<String, Any?> {
         when (intent?.action) {
             Intent.ACTION_MAIN -> {
                 intent.getStringExtra(SHORTCUT_KEY_PAGE)?.let { page ->
@@ -338,6 +338,8 @@ class MainActivity : FlutterActivity() {
         const val INTENT_DATA_KEY_QUERY = "query"
 
         const val INTENT_ACTION_PICK = "pick"
+        const val INTENT_ACTION_SCREEN_SAVER = "screen_saver"
+        const val INTENT_ACTION_SCREEN_SAVER_SETTINGS = "screen_saver_settings"
         const val INTENT_ACTION_SEARCH = "search"
         const val INTENT_ACTION_SET_WALLPAPER = "set_wallpaper"
         const val INTENT_ACTION_VIEW = "view"

android/app/src/main/kotlin/deckers/thibault/aves/ScreenSaverService.kt

@@ -1,4 +1,198 @@
 package deckers.thibault.aves
 
-class ScreenSaverService {
+import android.service.dreams.DreamService
+import android.view.View
+import android.view.ViewTreeObserver
+import app.loup.streams_channel.StreamsChannel
+import deckers.thibault.aves.channel.calls.AccessibilityHandler
+import deckers.thibault.aves.channel.calls.DeviceHandler
+import deckers.thibault.aves.channel.calls.MediaFileHandler
+import deckers.thibault.aves.channel.calls.MediaStoreHandler
+import deckers.thibault.aves.channel.calls.window.ServiceWindowHandler
+import deckers.thibault.aves.channel.calls.window.WindowHandler
+import deckers.thibault.aves.channel.streams.ImageByteStreamHandler
+import deckers.thibault.aves.channel.streams.MediaStoreStreamHandler
+import deckers.thibault.aves.utils.LogUtils
+import io.flutter.FlutterInjector
+import io.flutter.Log
+import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.android.FlutterSurfaceView
+import io.flutter.embedding.android.FlutterView
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.embedding.engine.dart.DartExecutor.DartEntrypoint
+import io.flutter.embedding.engine.plugins.util.GeneratedPluginRegister
+import io.flutter.embedding.engine.renderer.FlutterUiDisplayListener
+import io.flutter.plugin.common.MethodChannel
+
+// for FlutterView-level integration, cf https://docs.flutter.dev/development/add-to-app/android/add-flutter-view
+class ScreenSaverService : DreamService() {
+    private var flutterEngine: FlutterEngine? = null
+    private var flutterView: FlutterView? = null
+    private var activePreDrawListener: ViewTreeObserver.OnPreDrawListener? = null
+    private var isFlutterUiDisplayed = false
+    private var isFirstFrameRendered = false
+    private var isAttached = false
+
+    private val flutterUiDisplayListener: FlutterUiDisplayListener = object : FlutterUiDisplayListener {
+        override fun onFlutterUiDisplayed() {
+            isFlutterUiDisplayed = true
+            isFirstFrameRendered = true
+        }
+
+        override fun onFlutterUiNoLongerDisplayed() {
+            isFlutterUiDisplayed = false
+        }
+    }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        onAttach()
+
+        val messenger = flutterEngine!!.dartExecutor.binaryMessenger
+
+        // dart -> platform -> dart
+        // - need Context
+        MethodChannel(messenger, DeviceHandler.CHANNEL).setMethodCallHandler(DeviceHandler(this))
+        MethodChannel(messenger, MediaStoreHandler.CHANNEL).setMethodCallHandler(MediaStoreHandler(this))
+        // - need ContextWrapper
+        MethodChannel(messenger, AccessibilityHandler.CHANNEL).setMethodCallHandler(AccessibilityHandler(this))
+        MethodChannel(messenger, MediaFileHandler.CHANNEL).setMethodCallHandler(MediaFileHandler(this))
+        // - need Service
+        MethodChannel(messenger, WindowHandler.CHANNEL).setMethodCallHandler(ServiceWindowHandler(this))
+
+        // result streaming: dart -> platform ->->-> dart
+        // - need Context
+        StreamsChannel(messenger, ImageByteStreamHandler.CHANNEL).setStreamHandlerFactory { args -> ImageByteStreamHandler(this, args) }
+        StreamsChannel(messenger, MediaStoreStreamHandler.CHANNEL).setStreamHandlerFactory { args -> MediaStoreStreamHandler(this, args) }
+
+        // intent handling
+        // detail fetch: dart -> platform
+        MethodChannel(messenger, WallpaperActivity.VIEWER_CHANNEL).setMethodCallHandler { call, result ->
+            when (call.method) {
+                "getIntentData" -> {
+                    result.success(intentDataMap)
+                    intentDataMap.clear()
+                }
+            }
+        }
+
+        // dream setup
+        isInteractive = false
+        isFullscreen = true
+        setContentView(createFlutterView())
+    }
+
+    override fun onDreamingStarted() {
+        super.onDreamingStarted()
+        onStart()
+    }
+
+    override fun onDreamingStopped() {
+        onDestroyView()
+        super.onDreamingStopped()
+    }
+
+    override fun onDetachedFromWindow() {
+        release()
+        super.onDetachedFromWindow()
+    }
+
+    // from `FlutterActivityAndFragmentDelegate`
+
+    private fun createFlutterView(): View {
+        Log.d(LOG_TAG, "Creating FlutterView.")
+        val flutterSurfaceView = FlutterSurfaceView(this)
+        val pFlutterView = FlutterView(this, flutterSurfaceView)
+        flutterView = pFlutterView
+
+        // Add listener to be notified when Flutter renders its first frame.
+        pFlutterView.addOnFirstFrameRenderedListener(flutterUiDisplayListener)
+        Log.d(LOG_TAG, "Attaching FlutterEngine to FlutterView.")
+        pFlutterView.attachToFlutterEngine(flutterEngine!!)
+        pFlutterView.id = FlutterActivity.FLUTTER_VIEW_ID
+        delayFirstAndroidViewDraw(pFlutterView)
+        return pFlutterView
+    }
+
+    private fun release() {
+        flutterEngine = null
+        flutterView = null
+    }
+
+    private fun onAttach() {
+        if (flutterEngine == null) {
+            Log.d(LOG_TAG, "Setting up FlutterEngine.")
+            flutterEngine = FlutterEngine(
+                this,
+                null,
+                false,
+            )
+        }
+        GeneratedPluginRegister.registerGeneratedPlugins(flutterEngine!!)
+        isAttached = true
+    }
+
+    private fun onStart() {
+        Log.d(LOG_TAG, "onStart()")
+        doInitialFlutterViewRun()
+        flutterView!!.visibility = View.VISIBLE
+        flutterEngine!!.lifecycleChannel.appIsResumed()
+    }
+
+    private fun onDestroyView() {
+        Log.v(LOG_TAG, "onDestroyView()")
+        flutterView ?: return
+
+        val pFlutterView = flutterView!!
+        if (activePreDrawListener != null) {
+            pFlutterView.viewTreeObserver.removeOnPreDrawListener(activePreDrawListener)
+            activePreDrawListener = null
+        }
+        pFlutterView.detachFromFlutterEngine()
+        pFlutterView.removeOnFirstFrameRenderedListener(flutterUiDisplayListener)
+
+        flutterEngine!!.lifecycleChannel.appIsInactive()
+    }
+
+    private fun delayFirstAndroidViewDraw(flutterView: FlutterView) {
+        if (activePreDrawListener != null) {
+            flutterView.viewTreeObserver.removeOnPreDrawListener(activePreDrawListener)
+        }
+        activePreDrawListener = object : ViewTreeObserver.OnPreDrawListener {
+            override fun onPreDraw(): Boolean {
+                if (isFlutterUiDisplayed && activePreDrawListener != null) {
+                    flutterView.viewTreeObserver.removeOnPreDrawListener(this)
+                    activePreDrawListener = null
+                }
+                return isFlutterUiDisplayed
+            }
+        }
+        flutterView.viewTreeObserver.addOnPreDrawListener(activePreDrawListener)
+    }
+
+    private fun doInitialFlutterViewRun() {
+        val pFlutterEngine = flutterEngine!!
+        if (pFlutterEngine.dartExecutor.isExecutingDart) {
+            // No warning is logged because this situation will happen on every config
+            // change if the developer does not choose to retain the Fragment instance.
+            // So this is expected behavior in many cases.
+            return
+        }
+
+        pFlutterEngine.navigationChannel.setInitialRoute(DEFAULT_INITIAL_ROUTE)
+        val appBundlePathOverride = FlutterInjector.instance().flutterLoader().findAppBundlePath()
+        val entrypoint = DartEntrypoint(appBundlePathOverride, DEFAULT_DART_ENTRYPOINT)
+        pFlutterEngine.dartExecutor.executeDartEntrypoint(entrypoint)
+    }
+
+    companion object {
+        private val LOG_TAG = LogUtils.createTag<ScreenSaverService>()
+        private val intentDataMap: MutableMap<String, Any?> = hashMapOf(
+            MainActivity.INTENT_DATA_KEY_ACTION to MainActivity.INTENT_ACTION_SCREEN_SAVER,
+        )
+
+        // from `FlutterActivityLaunchConfigs`
+        const val DEFAULT_DART_ENTRYPOINT = "main"
+        const val DEFAULT_INITIAL_ROUTE = "/"
+    }
 }

android/app/src/main/kotlin/deckers/thibault/aves/ScreenSaverSettingsActivity.kt

@@ -1,4 +1,11 @@
 package deckers.thibault.aves
 
-class ScreenSaverSettingsActivity {
+import android.content.Intent
+
+class ScreenSaverSettingsActivity : MainActivity() {
+    override fun extractIntentData(intent: Intent?): MutableMap<String, Any?> {
+        return hashMapOf(
+            INTENT_DATA_KEY_ACTION to INTENT_ACTION_SCREEN_SAVER_SETTINGS,
+        )
+    }
 }

android/app/src/main/res/xml/screen_saver.xml

@@ -0,0 +1,2 @@
+<dream xmlns:android="http://schemas.android.com/apk/res/android"
+    android:settingsActivity="deckers.thibault.aves/deckers.thibault.aves.ScreenSaverSettingsActivity" />

android/app/src/profile/res/xml/screen_saver.xml

@@ -1,2 +1,2 @@
 <dream xmlns:android="http://schemas.android.com/apk/res/android"
-    android:settingsActivity="com.example.app/.ScreenSaverSettingsActivity" />
+    android:settingsActivity="deckers.thibault.aves.profile/deckers.thibault.aves.ScreenSaverSettingsActivity" />

android/app/src/profile/res/xml/screen_saverasd.xml

@@ -0,0 +1,2 @@
+<dream xmlns:android="http://schemas.android.com/apk/res/android"
+    android:settingsActivity="deckers.thibault.aves.profile/deckers.thibault.aves.ScreenSaverSettingsActivity" />

lib/app_mode.dart

@@ -4,6 +4,7 @@ enum AppMode {
   pickMultipleMediaExternal,
   pickMediaInternal,
   pickFilterInternal,
+  screenSaver,
   setWallpaper,
   slideshow,
   view,

lib/l10n/app_en.arb

@@ -765,6 +765,8 @@
   "settingsUnitSystemTile": "Units",
   "settingsUnitSystemTitle": "Units",
 
+  "settingsScreenSaverTitle": "Screen Saver",
+
   "statsPageTitle": "Stats",
   "statsWithGps": "{count, plural, =1{1 item with location} other{{count} items with location}}",
   "@statsWithGps": {

lib/model/settings/enums/display_refresh_rate_mode.dart

@@ -1,3 +1,4 @@
+import 'package:aves/services/common/services.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_displaymode/flutter_displaymode.dart';
@@ -16,17 +17,19 @@ extension ExtraDisplayRefreshRateMode on DisplayRefreshRateMode {
     }
   }
 
-  void apply() {
+  Future<void> apply() async {
+    if (!await windowService.isActivity()) return;
+
     debugPrint('Apply display refresh rate: $name');
     switch (this) {
       case DisplayRefreshRateMode.auto:
-        FlutterDisplayMode.setPreferredMode(DisplayMode.auto);
+        await FlutterDisplayMode.setPreferredMode(DisplayMode.auto);
         break;
       case DisplayRefreshRateMode.highest:
-        FlutterDisplayMode.setHighRefreshRate();
+        await FlutterDisplayMode.setHighRefreshRate();
         break;
       case DisplayRefreshRateMode.lowest:
-        FlutterDisplayMode.setLowRefreshRate();
+        await FlutterDisplayMode.setLowRefreshRate();
         break;
     }
   }

lib/model/settings/settings.dart

@@ -138,6 +138,11 @@ class Settings extends ChangeNotifier {
   // file picker
   static const filePickerShowHiddenFilesKey = 'file_picker_show_hidden_files';
 
+  // screen saver
+  static const screenSaverTransitionKey = 'screen_saver_transition';
+  static const screenSaverVideoPlaybackKey = 'screen_saver_video_playback';
+  static const screenSaverIntervalKey = 'screen_saver_interval';
+
   // slideshow
   static const slideshowRepeatKey = 'slideshow_loop';
   static const slideshowShuffleKey = 'slideshow_shuffle';
@@ -583,6 +588,20 @@ class Settings extends ChangeNotifier {
 
   set filePickerShowHiddenFiles(bool newValue) => setAndNotify(filePickerShowHiddenFilesKey, newValue);
 
+  // screen saver
+
+  ViewerTransition get screenSaverTransition => getEnumOrDefault(screenSaverTransitionKey, SettingsDefaults.slideshowTransition, ViewerTransition.values);
+
+  set screenSaverTransition(ViewerTransition newValue) => setAndNotify(screenSaverTransitionKey, newValue.toString());
+
+  SlideshowVideoPlayback get screenSaverVideoPlayback => getEnumOrDefault(screenSaverVideoPlaybackKey, SettingsDefaults.slideshowVideoPlayback, SlideshowVideoPlayback.values);
+
+  set screenSaverVideoPlayback(SlideshowVideoPlayback newValue) => setAndNotify(screenSaverVideoPlaybackKey, newValue.toString());
+
+  SlideshowInterval get screenSaverInterval => getEnumOrDefault(screenSaverIntervalKey, SettingsDefaults.slideshowInterval, SlideshowInterval.values);
+
+  set screenSaverInterval(SlideshowInterval newValue) => setAndNotify(screenSaverIntervalKey, newValue.toString());
+
   // slideshow
 
   bool get slideshowRepeat => getBoolOrDefault(slideshowRepeatKey, SettingsDefaults.slideshowRepeat);
@@ -792,6 +811,9 @@ class Settings extends ChangeNotifier {
             case unitSystemKey:
             case accessibilityAnimationsKey:
             case timeToTakeActionKey:
+            case screenSaverTransitionKey:
+            case screenSaverVideoPlaybackKey:
+            case screenSaverIntervalKey:
             case slideshowTransitionKey:
             case slideshowVideoPlaybackKey:
             case slideshowIntervalKey:

lib/model/source/collection_source.dart

@@ -370,6 +370,7 @@ abstract class CollectionSource with SourceBase, AlbumMixin, LocationMixin, TagM
     AnalysisController? analysisController,
     String? directory,
     bool loadTopEntriesFirst = false,
+    bool canAnalyze = true,
   });
 
   Future<Set<String>> refreshUris(Set<String> changedUris, {AnalysisController? analysisController});

lib/model/source/media_store_source.dart

@@ -24,6 +24,7 @@ class MediaStoreSource extends CollectionSource {
     AnalysisController? analysisController,
     String? directory,
     bool loadTopEntriesFirst = false,
+    bool canAnalyze = true,
   }) async {
     if (_initState == SourceInitializationState.none) {
       await _loadEssentials();
@@ -35,6 +36,7 @@ class MediaStoreSource extends CollectionSource {
       analysisController: analysisController,
       directory: directory,
       loadTopEntriesFirst: loadTopEntriesFirst,
+      canAnalyze: canAnalyze,
     ));
   }
 
@@ -63,6 +65,7 @@ class MediaStoreSource extends CollectionSource {
     AnalysisController? analysisController,
     String? directory,
     required bool loadTopEntriesFirst,
+    required bool canAnalyze,
   }) async {
     debugPrint('$runtimeType refresh start');
     final stopwatch = Stopwatch()..start();
@@ -182,7 +185,11 @@ class MediaStoreSource extends CollectionSource {
         if (analysisIds != null) {
           analysisEntries = visibleEntries.where((entry) => analysisIds.contains(entry.id)).toSet();
         }
-        await analyze(analysisController, entries: analysisEntries);
+        if (canAnalyze) {
+          await analyze(analysisController, entries: analysisEntries);
+        } else {
+          stateNotifier.value = SourceState.ready;
+        }
 
         // the home page may not reflect the current derived filters
         // as the initial addition of entries is silent,

lib/services/window_service.dart

@@ -3,6 +3,8 @@ import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
 abstract class WindowService {
+  Future<bool> isActivity();
+
   Future<void> keepScreenOn(bool on);
 
   Future<bool> isRotationLocked();
@@ -17,6 +19,17 @@ abstract class WindowService {
 class PlatformWindowService implements WindowService {
   static const platform = MethodChannel('deckers.thibault/aves/window');
 
+  @override
+  Future<bool> isActivity() async {
+    try {
+      final result = await platform.invokeMethod('isActivity');
+      if (result != null) return result as bool;
+    } on PlatformException catch (e, stack) {
+      await reportService.recordError(e, stack);
+    }
+    return false;
+  }
+
   @override
   Future<void> keepScreenOn(bool on) async {
     try {

lib/widgets/aves_app.dart

@@ -230,6 +230,7 @@ class _AvesAppState extends State<AvesApp> with WidgetsBindingObserver {
             break;
           case AppMode.pickMediaInternal:
           case AppMode.pickFilterInternal:
+          case AppMode.screenSaver:
           case AppMode.setWallpaper:
           case AppMode.slideshow:
           case AppMode.view:

lib/widgets/collection/grid/tile.dart

@@ -54,6 +54,7 @@ class InteractiveTile extends StatelessWidget {
             Navigator.pop(context, entry);
             break;
           case AppMode.pickFilterInternal:
+          case AppMode.screenSaver:
           case AppMode.setWallpaper:
           case AppMode.slideshow:
           case AppMode.view:

lib/widgets/filter_grids/common/filter_tile.dart

@@ -63,6 +63,7 @@ class _InteractiveFilterTileState<T extends CollectionFilter> extends State<Inte
           Navigator.pop<T>(context, filter);
           break;
         case AppMode.pickMediaInternal:
+        case AppMode.screenSaver:
         case AppMode.setWallpaper:
         case AppMode.slideshow:
         case AppMode.view:

lib/widgets/home_page.dart

@@ -21,7 +21,9 @@ import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/common/search/route.dart';
 import 'package:aves/widgets/filter_grids/albums_page.dart';
 import 'package:aves/widgets/search/search_delegate.dart';
+import 'package:aves/widgets/settings/screen_saver_settings_page.dart';
 import 'package:aves/widgets/viewer/entry_viewer_page.dart';
+import 'package:aves/widgets/viewer/screen_saver_page.dart';
 import 'package:aves/widgets/wallpaper_page.dart';
 import 'package:collection/collection.dart';
 import 'package:flutter/material.dart';
@@ -49,6 +51,8 @@ class _HomePageState extends State<HomePage> {
   Set<String>? _shortcutFilters;
 
   static const actionPick = 'pick';
+  static const actionScreenSaver = 'screen_saver';
+  static const actionScreenSaverSettings = 'screen_saver_settings';
   static const actionSearch = 'search';
   static const actionSetWallpaper = 'set_wallpaper';
   static const actionView = 'view';
@@ -71,20 +75,21 @@ class _HomePageState extends State<HomePage> {
 
   Future<void> _setup() async {
     final stopwatch = Stopwatch()..start();
-    // do not check whether permission was granted,
+    if (await windowService.isActivity()) {
-    // as some app stores hide in some countries
+      // do not check whether permission was granted, because some app stores
-    // apps that force quit on permission denial
+      // hide in some countries apps that force quit on permission denial
-    await [
+      await [
-      Permission.storage,
+        Permission.storage,
-      // to access media with unredacted metadata with scoped storage (Android 10+)
+        // to access media with unredacted metadata with scoped storage (Android 10+)
-      Permission.accessMediaLocation,
+        Permission.accessMediaLocation,
-    ].request();
+      ].request();
+    }
 
     var appMode = AppMode.main;
     final intentData = widget.intentData ?? await ViewerService.getIntentData();
     final intentAction = intentData['action'];
 
-    if (intentAction != actionSetWallpaper) {
+    if (!{actionScreenSaver, actionSetWallpaper}.contains(intentAction)) {
       await androidFileUtils.init();
       if (settings.isInstalledAppAccessAllowed) {
         unawaited(androidFileUtils.initAppNames());
@@ -111,6 +116,13 @@ class _HomePageState extends State<HomePage> {
           debugPrint('pick mimeType=$pickMimeTypes multiple=$multiple');
           appMode = multiple ? AppMode.pickMultipleMediaExternal : AppMode.pickSingleMediaExternal;
           break;
+        case actionScreenSaver:
+          appMode = AppMode.screenSaver;
+          _shortcutRouteName = ScreenSaverPage.routeName;
+          break;
+        case actionScreenSaverSettings:
+          _shortcutRouteName = ScreenSaverSettingsPage.routeName;
+          break;
         case actionSearch:
           _shortcutRouteName = CollectionSearchDelegate.pageRouteName;
           _shortcutSearchQuery = intentData['query'];
@@ -147,6 +159,12 @@ class _HomePageState extends State<HomePage> {
           loadTopEntriesFirst: settings.homePage == HomePageSetting.collection,
         );
         break;
+      case AppMode.screenSaver:
+        final source = context.read<CollectionSource>();
+        await source.init(
+          canAnalyze: false,
+        );
+        break;
       case AppMode.view:
         if (_isViewerSourceable(_viewerEntry)) {
           final directory = _viewerEntry?.directory;
@@ -271,8 +289,20 @@ class _HomePageState extends State<HomePage> {
     switch (routeName) {
       case AlbumListPage.routeName:
         return DirectMaterialPageRoute(
-          settings: const RouteSettings(name: AlbumListPage.routeName),
+          settings: RouteSettings(name: routeName),
-          builder: (_) => const AlbumListPage(),
+          builder: (context) => const AlbumListPage(),
+        );
+      case ScreenSaverPage.routeName:
+        return DirectMaterialPageRoute(
+          settings: RouteSettings(name: routeName),
+          builder: (context) => ScreenSaverPage(
+            source: source,
+          ),
+        );
+      case ScreenSaverSettingsPage.routeName:
+        return DirectMaterialPageRoute(
+          settings: RouteSettings(name: routeName),
+          builder: (context) => const ScreenSaverSettingsPage(),
         );
       case CollectionSearchDelegate.pageRouteName:
         return SearchPageRoute(
@@ -286,7 +316,7 @@ class _HomePageState extends State<HomePage> {
       case CollectionPage.routeName:
       default:
         return DirectMaterialPageRoute(
-          settings: const RouteSettings(name: CollectionPage.routeName),
+          settings: RouteSettings(name: routeName),
           builder: (context) => CollectionPage(
             source: source,
             filters: filters,

lib/widgets/settings/screen_saver_settings_page.dart

@@ -0,0 +1,53 @@
+import 'package:aves/model/settings/enums/enums.dart';
+import 'package:aves/model/settings/enums/slideshow_interval.dart';
+import 'package:aves/model/settings/enums/slideshow_video_playback.dart';
+import 'package:aves/model/settings/enums/viewer_transition.dart';
+import 'package:aves/model/settings/settings.dart';
+import 'package:aves/widgets/common/extensions/build_context.dart';
+import 'package:aves/widgets/settings/common/tiles.dart';
+import 'package:flutter/material.dart';
+
+class ScreenSaverSettingsPage extends StatelessWidget {
+  static const routeName = '/settings/screen_saver';
+
+  const ScreenSaverSettingsPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(context.l10n.settingsScreenSaverTitle),
+      ),
+      body: SafeArea(
+        child: ListView(
+          children: [
+            SettingsSelectionListTile<ViewerTransition>(
+              values: ViewerTransition.values,
+              getName: (context, v) => v.getName(context),
+              selector: (context, s) => s.screenSaverTransition,
+              onSelection: (v) => settings.screenSaverTransition = v,
+              tileTitle: context.l10n.settingsSlideshowTransitionTile,
+              dialogTitle: context.l10n.settingsSlideshowTransitionTitle,
+            ),
+            SettingsSelectionListTile<SlideshowInterval>(
+              values: SlideshowInterval.values,
+              getName: (context, v) => v.getName(context),
+              selector: (context, s) => s.screenSaverInterval,
+              onSelection: (v) => settings.screenSaverInterval = v,
+              tileTitle: context.l10n.settingsSlideshowIntervalTile,
+              dialogTitle: context.l10n.settingsSlideshowIntervalTitle,
+            ),
+            SettingsSelectionListTile<SlideshowVideoPlayback>(
+              values: SlideshowVideoPlayback.values,
+              getName: (context, v) => v.getName(context),
+              selector: (context, s) => s.screenSaverVideoPlayback,
+              onSelection: (v) => settings.screenSaverVideoPlayback = v,
+              tileTitle: context.l10n.settingsSlideshowVideoPlaybackTile,
+              dialogTitle: context.l10n.settingsSlideshowVideoPlaybackTitle,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/widgets/viewer/entry_vertical_pager.dart

@@ -116,7 +116,8 @@ class _ViewerVerticalPageViewState extends State<ViewerVerticalPageView> {
       _buildImagePage(),
     ];
 
-    if (context.read<ValueNotifier<AppMode>>().value != AppMode.slideshow) {
+    final appMode = context.read<ValueNotifier<AppMode>>().value;
+    if (!{AppMode.screenSaver, AppMode.slideshow}.contains(appMode)) {
       final infoPage = NotificationListener<ShowImageNotification>(
         onNotification: (notification) {
           widget.onImagePageRequested();

lib/widgets/viewer/entry_viewer_stack.dart

@@ -276,14 +276,20 @@ class _EntryViewerStackState extends State<EntryViewerStack> with EntryViewContr
   }
 
   List<Widget> _buildOverlays() {
-    if (context.read<ValueNotifier<AppMode>>().value == AppMode.slideshow) {
+    final appMode = context.read<ValueNotifier<AppMode>>().value;
-      return [_buildSlideshowBottomOverlay()];
+    switch (appMode) {
+      case AppMode.screenSaver:
+        return [];
+      case AppMode.slideshow:
+        return [
+          _buildSlideshowBottomOverlay(),
+        ];
+      default:
+        return [
+          _buildViewerTopOverlay(),
+          _buildViewerBottomOverlay(),
+        ];
     }
-
-    return [
-      _buildViewerTopOverlay(),
-      _buildViewerBottomOverlay(),
-    ];
   }
 
   Widget _buildSlideshowBottomOverlay() {

lib/widgets/viewer/screen_saver_page.dart

@@ -1,13 +1,11 @@
-import 'package:aves/app_mode.dart';
-import 'package:aves/model/actions/slideshow_actions.dart';
-import 'package:aves/model/filters/album.dart';
 import 'package:aves/model/filters/mime.dart';
 import 'package:aves/model/settings/enums/enums.dart';
 import 'package:aves/model/settings/enums/slideshow_interval.dart';
 import 'package:aves/model/settings/settings.dart';
 import 'package:aves/model/source/collection_lens.dart';
+import 'package:aves/model/source/collection_source.dart';
+import 'package:aves/model/source/enums.dart';
 import 'package:aves/theme/icons.dart';
-import 'package:aves/widgets/collection/collection_page.dart';
 import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/common/identity/empty.dart';
 import 'package:aves/widgets/common/providers/media_query_data_provider.dart';
@@ -15,128 +13,110 @@ import 'package:aves/widgets/viewer/controller.dart';
 import 'package:aves/widgets/viewer/entry_viewer_page.dart';
 import 'package:aves/widgets/viewer/entry_viewer_stack.dart';
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
 
-class SlideshowPage extends StatefulWidget {
+class ScreenSaverPage extends StatefulWidget {
-  static const routeName = '/collection/slideshow';
+  static const routeName = '/screen_saver';
 
-  final CollectionLens collection;
+  final CollectionSource source;
 
-  const SlideshowPage({
+  const ScreenSaverPage({
     super.key,
-    required this.collection,
+    required this.source,
   });
 
   @override
-  State<SlideshowPage> createState() => _SlideshowPageState();
+  State<ScreenSaverPage> createState() => _ScreenSaverPageState();
 }
 
-class _SlideshowPageState extends State<SlideshowPage> {
+class _ScreenSaverPageState extends State<ScreenSaverPage> {
-  late final CollectionLens _slideshowCollection;
   late final ViewerController _viewerController;
+  CollectionLens? _slideshowCollection;
+
+  CollectionSource get source => widget.source;
 
   @override
   void initState() {
     super.initState();
-    final originalCollection = widget.collection;
-    var entries = originalCollection.sortedEntries;
-    if (settings.slideshowVideoPlayback == SlideshowVideoPlayback.skip) {
-      entries = entries.where((entry) => !MimeFilter.video.test(entry)).toList();
-    }
-    if (settings.slideshowShuffle) {
-      entries.shuffle();
-    }
-    _slideshowCollection = CollectionLens(
-      source: originalCollection.source,
-      listenToSource: false,
-      fixedSort: true,
-      fixedSelection: entries,
-    );
     _viewerController = ViewerController(
-      transition: settings.slideshowTransition,
+      transition: settings.screenSaverTransition,
-      repeat: settings.slideshowRepeat,
+      repeat: true,
       autopilot: true,
-      autopilotInterval: settings.slideshowInterval.getDuration(),
+      autopilotInterval: settings.screenSaverInterval.getDuration(),
     );
+    source.stateNotifier.addListener(_onSourceStateChanged);
+    _initSlideshowCollection();
+  }
+
+  void _onSourceStateChanged() {
+    if (_slideshowCollection == null) {
+      _initSlideshowCollection();
+      if (_slideshowCollection != null) {
+        setState(() {});
+      }
+    }
   }
 
   @override
   void dispose() {
+    source.stateNotifier.removeListener(_onSourceStateChanged);
     _viewerController.dispose();
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
-    final entries = _slideshowCollection.sortedEntries;
+    Widget child;
-    return ListenableProvider<ValueNotifier<AppMode>>.value(
-      value: ValueNotifier(AppMode.slideshow),
-      child: MediaQueryDataProvider(
-        child: Scaffold(
-          body: entries.isEmpty
-              ? EmptyContent(
-                  icon: AIcons.image,
-                  text: context.l10n.collectionEmptyImages,
-                  alignment: Alignment.center,
-                )
-              : ViewStateConductorProvider(
-                  child: VideoConductorProvider(
-                    child: MultiPageConductorProvider(
-                      child: NotificationListener<SlideshowActionNotification>(
-                        onNotification: (notification) {
-                          _onActionSelected(notification.action);
-                          return true;
-                        },
-                        child: EntryViewerStack(
-                          collection: _slideshowCollection,
-                          initialEntry: entries.first,
-                          viewerController: _viewerController,
-                        ),
-                      ),
-                    ),
-                  ),
-                ),
-        ),
-      ),
-    );
-  }
 
-  void _onActionSelected(SlideshowAction action) {
+    final collection = _slideshowCollection;
-    switch (action) {
+    if (collection == null) {
-      case SlideshowAction.resume:
+      child = const SizedBox();
-        _viewerController.autopilot = true;
+    } else {
-        break;
+      final entries = collection.sortedEntries;
-      case SlideshowAction.showInCollection:
+      if (entries.isEmpty) {
-        _showInCollection();
+        child = EmptyContent(
-        break;
+          icon: AIcons.image,
+          text: context.l10n.collectionEmptyImages,
+          alignment: Alignment.center,
+        );
+      } else {
+        child = ViewStateConductorProvider(
+          child: VideoConductorProvider(
+            child: MultiPageConductorProvider(
+              child: EntryViewerStack(
+                collection: collection,
+                initialEntry: entries.first,
+                viewerController: _viewerController,
+              ),
+            ),
+          ),
+        );
+      }
     }
+
+    return MediaQueryDataProvider(
+      child: Scaffold(
+        body: child,
+      ),
+    );
   }
 
-  void _showInCollection() {
+  void _initSlideshowCollection() {
-    final entry = _viewerController.entryNotifier.value;
+    if (source.stateNotifier.value != SourceState.ready || _slideshowCollection != null) return;
-    if (entry == null) return;
 
-    final source = _slideshowCollection.source;
+    final originalCollection = CollectionLens(
-    final album = entry.directory;
+      source: source,
-    final uri = entry.uri;
+      // TODO TLAD [screensaver] custom filters
-
+    );
-    Navigator.pushAndRemoveUntil(
+    var entries = originalCollection.sortedEntries;
-      context,
+    if (settings.screenSaverVideoPlayback == SlideshowVideoPlayback.skip) {
-      MaterialPageRoute(
+      entries = entries.where((entry) => !MimeFilter.video.test(entry)).toList();
-        settings: const RouteSettings(name: CollectionPage.routeName),
+    }
-        builder: (context) => CollectionPage(
+    entries.shuffle();
-          source: source,
+    _slideshowCollection = CollectionLens(
-          filters: album != null ? {AlbumFilter(album, source.getAlbumDisplayName(context, album))} : null,
+      source: originalCollection.source,
-          highlightTest: (entry) => entry.uri == uri,
+      listenToSource: false,
-        ),
+      fixedSort: true,
-      ),
+      fixedSelection: entries,
-      (route) => false,
     );
   }
 }
-
-class SlideshowActionNotification extends Notification {
-  final SlideshowAction action;
-
-  SlideshowActionNotification(this.action);
-}

lib/widgets/viewer/slideshow_page.dart

@@ -32,32 +32,19 @@ class SlideshowPage extends StatefulWidget {
 }
 
 class _SlideshowPageState extends State<SlideshowPage> {
-  late final CollectionLens _slideshowCollection;
   late final ViewerController _viewerController;
+  late final CollectionLens _slideshowCollection;
 
   @override
   void initState() {
     super.initState();
-    final originalCollection = widget.collection;
-    var entries = originalCollection.sortedEntries;
-    if (settings.slideshowVideoPlayback == SlideshowVideoPlayback.skip) {
-      entries = entries.where((entry) => !MimeFilter.video.test(entry)).toList();
-    }
-    if (settings.slideshowShuffle) {
-      entries.shuffle();
-    }
-    _slideshowCollection = CollectionLens(
-      source: originalCollection.source,
-      listenToSource: false,
-      fixedSort: true,
-      fixedSelection: entries,
-    );
     _viewerController = ViewerController(
       transition: settings.slideshowTransition,
       repeat: settings.slideshowRepeat,
       autopilot: true,
       autopilotInterval: settings.slideshowInterval.getDuration(),
     );
+    _initSlideshowCollection();
   }
 
   @override
@@ -101,6 +88,23 @@ class _SlideshowPageState extends State<SlideshowPage> {
     );
   }
 
+  void _initSlideshowCollection() {
+    final originalCollection = widget.collection;
+    var entries = originalCollection.sortedEntries;
+    if (settings.slideshowVideoPlayback == SlideshowVideoPlayback.skip) {
+      entries = entries.where((entry) => !MimeFilter.video.test(entry)).toList();
+    }
+    if (settings.slideshowShuffle) {
+      entries.shuffle();
+    }
+    _slideshowCollection = CollectionLens(
+      source: originalCollection.source,
+      listenToSource: false,
+      fixedSort: true,
+      fixedSelection: entries,
+    );
+  }
+
   void _onActionSelected(SlideshowAction action) {
     switch (action) {
       case SlideshowAction.resume:

lib/widgets/viewer/visual/controller_mixin.dart

@@ -37,20 +37,28 @@ mixin EntryViewControllerMixin<T extends StatefulWidget> on State<T> {
     }
   }
 
-  bool _isSlideshow(BuildContext context) => context.read<ValueNotifier<AppMode>>().value == AppMode.slideshow;
+  SlideshowVideoPlayback? get videoPlaybackOverride {
+    final appMode = context.read<ValueNotifier<AppMode>>().value;
+    switch (appMode) {
+      case AppMode.screenSaver:
+        return settings.screenSaverVideoPlayback;
+      case AppMode.slideshow:
+        return settings.slideshowVideoPlayback;
+      default:
+        return null;
+    }
+  }
 
   bool _shouldAutoPlay(BuildContext context) {
-    if (_isSlideshow(context)) {
+    switch (videoPlaybackOverride) {
-      switch (settings.slideshowVideoPlayback) {
+      case SlideshowVideoPlayback.skip:
-        case SlideshowVideoPlayback.skip:
+        return false;
-          return false;
+      case SlideshowVideoPlayback.playMuted:
-        case SlideshowVideoPlayback.playMuted:
+      case SlideshowVideoPlayback.playWithSound:
-        case SlideshowVideoPlayback.playWithSound:
+        return true;
-          return true;
+      case null:
-      }
+        return settings.enableVideoAutoPlay;
     }
-
-    return settings.enableVideoAutoPlay;
   }
 
   Future<void> _initVideoController(AvesEntry entry) async {
@@ -127,7 +135,7 @@ mixin EntryViewControllerMixin<T extends StatefulWidget> on State<T> {
     // so we play after a delay for increased stability
     await Future.delayed(const Duration(milliseconds: 300) * timeDilation);
 
-    if (_isSlideshow(context) && settings.slideshowVideoPlayback == SlideshowVideoPlayback.playMuted && !videoController.isMuted) {
+    if (videoPlaybackOverride == SlideshowVideoPlayback.playMuted && !videoController.isMuted) {
       await videoController.toggleMute();
     }
 

test/fake/window_service.dart

@@ -4,6 +4,9 @@ import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 class FakeWindowService extends Fake implements WindowService {
+  @override
+  Future<bool> isActivity() => SynchronousFuture(true);
+
   @override
   Future<void> keepScreenOn(bool on) => SynchronousFuture(null);
 

untranslated.json

@@ -1,34 +1,42 @@
 {
   "de": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "es": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "fr": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "id": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "it": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "ja": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "ko": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "pt": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ],
 
   "ru": [
@@ -58,6 +66,7 @@
     "settingsSlideshowVideoPlaybackTile",
     "settingsSlideshowVideoPlaybackTitle",
     "settingsThemeEnableDynamicColor",
+    "settingsScreenSaverTitle",
     "viewerSetWallpaperButtonLabel"
   ],
 
@@ -86,10 +95,12 @@
     "settingsSlideshowIntervalTitle",
     "settingsSlideshowVideoPlaybackTile",
     "settingsSlideshowVideoPlaybackTitle",
+    "settingsScreenSaverTitle",
     "viewerSetWallpaperButtonLabel"
   ],
 
   "zh": [
-    "filterOnThisDayLabel"
+    "filterOnThisDayLabel",
+    "settingsScreenSaverTitle"
   ]
 }