Only call setFullScreen if that changes fullscreen state

lib/features/home/home_page.dart

@@ -48,7 +48,9 @@ class _HomePageState extends State<HomePage> with RouteAware {
     super.initState();
 
     // Exit fullscreen when entering home page
-    FullScreen.setFullScreen(false);
+    if (FullScreen.isFullScreen) {
+      FullScreen.setFullScreen(false);
+    }
 
     // Subscribe to route changes
     WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -71,14 +73,19 @@ class _HomePageState extends State<HomePage> with RouteAware {
 
   @override
   void didPush() {
-    FullScreen.setFullScreen(false);
+    // Exit fullscreen when entering home page
+    if (FullScreen.isFullScreen) {
+      FullScreen.setFullScreen(false);
+    }
     super.didPush();
   }
 
   @override
   void didPopNext() {
     // Exit fullscreen when returning to home page
-    FullScreen.setFullScreen(false);
+    if (FullScreen.isFullScreen) {
+      FullScreen.setFullScreen(false);
+    }
     super.didPopNext();
   }
 

lib/features/sheet_viewer/sheet_viewer_page.dart

@@ -65,7 +65,9 @@ class _SheetViewerPageState extends State<SheetViewerPage>
     _rightDrawingController = DrawingController(maxHistorySteps: 50);
 
     FullScreen.addListener(this);
-    FullScreen.setFullScreen(widget.config.fullscreen);
+    if (FullScreen.isFullScreen != widget.config.fullscreen) {
+      FullScreen.setFullScreen(widget.config.fullscreen);
+    }
     _documentLoaded = _loadPdf();
   }
 
@@ -210,7 +212,7 @@ class _SheetViewerPageState extends State<SheetViewerPage>
   }
 
   void _toggleFullscreen() {
-    FullScreen.setFullScreen(!widget.config.fullscreen);
+    FullScreen.setFullScreen(!FullScreen.isFullScreen);
   }
 
   // ---------------------------------------------------------------------------