Temporary setup of alternative to advertisements

lib/widgets/receipt_capture.dart

@@ -28,6 +28,34 @@ Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) as
 
   final keepMaxQuality = context.read<AppState>().keepMaxQualityReceiptPhotos;
   final picker = ImagePicker();
+
+  // Raised *before* the camera/gallery opens rather than after it returns.
+  // [ImagePicker.pickImage] doesn't complete when the camera closes — it
+  // also downscales the captured photo (several MB straight off the
+  // sensor), which takes seconds on a busy device. With the progress
+  // shown only afterward, that whole stretch left the user staring at an
+  // unchanged Receipts list with no sign anything was happening, which
+  // reads as "the capture did nothing" — and tapping away during it
+  // genuinely does abandon the capture.
+  var progressShowing = false;
+  void showProgress() {
+    if (progressShowing || !context.mounted) return;
+    progressShowing = true;
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (_) => const _ReceiptProgressDialog(),
+    );
+  }
+
+  void hideProgress() {
+    if (!progressShowing || !context.mounted) return;
+    progressShowing = false;
+    Navigator.of(context).pop();
+  }
+
+  showProgress();
+
   XFile? photo;
   try {
     photo = await picker.pickImage(
@@ -37,6 +65,7 @@ Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) as
       maxHeight: keepMaxQuality ? null : receiptImageMaxDimension,
     );
   } catch (e) {
+    hideProgress();
     if (context.mounted) {
       final sourceLabel = source == ImageSource.camera ? 'camera' : 'photo library';
       ScaffoldMessenger.of(context).showSnackBar(
@@ -45,16 +74,16 @@ Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) as
     }
     return;
   }
-  if (photo == null) return;
+  // Cancelled (backed out of the camera, or didn't confirm the shot) —
+  // nothing to say about that, it was deliberate.
+  if (photo == null) {
+    hideProgress();
+    return;
+  }
 
   final imageFile = File(photo.path);
 
   if (!context.mounted) return;
-  showDialog(
-    context: context,
-    barrierDismissible: false,
-    builder: (_) => const Center(child: CircularProgressIndicator()),
-  );
 
   final ocrService = OcrService();
   String recognizedText = '';
@@ -69,7 +98,7 @@ Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) as
   final parsed = ReceiptParser.parse(recognizedText);
 
   if (!context.mounted) return;
-  Navigator.of(context).pop(); // close the OCR loading spinner
+  hideProgress();
 
   final state = parsed.state;
   if (state != null && state != 'MO') {
@@ -90,6 +119,45 @@ Future<void> captureReceiptForVehicle(BuildContext context, String vehicleId) as
   }
 }
 
+/// Shown from the moment the camera/gallery is opened until the parsed
+/// receipt is ready to review. Deliberately says what's happening rather
+/// than showing a bare spinner: the wait here is mostly downscaling and
+/// reading the photo, which is long enough on a slow device that an
+/// unexplained spinner invites tapping away mid-capture.
+class _ReceiptProgressDialog extends StatelessWidget {
+  const _ReceiptProgressDialog();
+
+  @override
+  Widget build(BuildContext context) {
+    return PopScope(
+      // Backing out here wouldn't cancel the underlying capture, it would
+      // just hide it and strand the user.
+      canPop: false,
+      child: Dialog(
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 32),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const CircularProgressIndicator(),
+              const SizedBox(height: 20),
+              Text('Reading your receipt…', style: Theme.of(context).textTheme.titleSmall),
+              const SizedBox(height: 6),
+              Text(
+                'This can take a few seconds.',
+                textAlign: TextAlign.center,
+                style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                      color: Theme.of(context).colorScheme.onSurfaceVariant,
+                    ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
 /// Missouri's fuel tax refund only applies to fuel bought in Missouri —
 /// warn if the receipt's address is somewhere else, and let the user
 /// decide whether to log it anyway (e.g. it might still be worth tracking