[IMP] Disable screensaver during SeedQR transcription

src/seedsigner/controller.py

@@ -14,7 +14,7 @@
 from seedsigner.models.singleton import Singleton
 from seedsigner.models.threads import BaseThread
 from seedsigner.views.screensaver import ScreensaverScreen
-from seedsigner.views.view import Destination
+from seedsigner.views.view import Destination, View
 
 
 logger = logging.getLogger(__name__)
@@ -466,3 +466,18 @@ def handle_exception(self, e) -> Destination:
             exception_msg,
         ]
         return Destination(UnhandledExceptionView, view_args={"error": error}, clear_history=True)
+
+
+    @property
+    def is_screensaver_start_allowed(self) -> bool:
+        """
+            Determines whether the screensaver is allowed to start.
+
+            The screensaver can start only if:
+            - It is not currently running.
+            - The current active view allows screensaver activity.
+        """
+        from seedsigner.views import MainMenuView
+        # Confusingly, the top item in the `BackStack` is actually the *current* View
+        active_view = self.back_stack[-1].view if self.back_stack else MainMenuView()
+        return not self.is_screensaver_running and active_view.is_screensaver_allowed

src/seedsigner/hardware/buttons.py

@@ -89,7 +89,7 @@ def wait_for(self, keys=[]) -> int:
                 return HardwareButtonsConstants.OVERRIDE
 
             cur_time = int(time.time() * 1000)
-            if cur_time - self.last_input_time > controller.screensaver_activation_ms and not controller.is_screensaver_running:
+            if cur_time - self.last_input_time > controller.screensaver_activation_ms and controller.is_screensaver_start_allowed:
                 # Start the screensaver. Will block execution until input detected.
                 controller.start_screensaver()
 

src/seedsigner/views/seed_views.py

@@ -1567,7 +1567,8 @@ def __init__(self, seed_num: int, seedqr_format: str, initial_zone_x: int = 0, i
         self.seedqr_format = seedqr_format
         self.seed = self.controller.get_seed(seed_num)
         self.initial_zone_x = initial_zone_x
-        self.initial_zone_y = initial_zone_y 
+        self.initial_zone_y = initial_zone_y
+        self.is_screensaver_allowed = False
 
 
     def run(self):

src/seedsigner/views/view.py

@@ -67,6 +67,7 @@ def _initialize(self):
         self.screen = None
 
         self._redirect: 'Destination' = None
+        self.is_screensaver_allowed = True
 
 
     def __init__(self):

tests/test_flows_seed.py

@@ -476,6 +476,25 @@ def load_right_seed_into_decoder(view: View):
             FlowStep(seed_views.SeedOptionsView),
         ])
 
+    def test_transcribe_seedqr_screensaver_startable_status(self):
+        """
+            The controller should return False for screensaver startable status when SeedTranscribeSeedQRZoomedInView
+            is active.
+        """
+        # Load a finalized Seed into the Controller
+        mnemonic = ["abandon"] * 11 + ["about"]
+        self.controller.storage.set_pending_seed(Seed(mnemonic=mnemonic))
+        self.controller.storage.finalize_pending_seed()
+
+        self.run_sequence(
+            initial_destination_view_args={'num_modules': 21, 'seed_num': 0, 'seedqr_format': 'seed__seedqr'},
+            sequence=[
+                FlowStep(seed_views.SeedTranscribeSeedQRWholeQRView),
+                FlowStep(seed_views.SeedTranscribeSeedQRZoomedInView, is_redirect=True),  # Live interactive screens are a bit weird; not sure why `is_redirect` is necessary here
+        ])
+
+        assert self.controller.is_screensaver_start_allowed == False
+
 
 
 class TestMessageSigningFlows(FlowTest):