scan countdown - attempt to fix it

(cherry picked from commit f07fa71)

Author: UrszulaNeuman

dls_barcode/gui/countdown_box.py

@@ -1,3 +1,5 @@
+import logging
+
 from PyQt5 import QtCore
 from PyQt5.QtWidgets import QLabel, QGroupBox, QVBoxLayout
 
@@ -14,6 +16,7 @@ def __init__(self):
         self.setTitle("Countdown")
         self.setMaximumHeight(100)
         self.setMaximumWidth(100)
+        self._timer = None
         self._init_ui()
         self.count = None
 
@@ -33,8 +36,12 @@ def start_countdown(self, count):
         self._timer.start(1000)
 
     def reset_countdown(self):
-        self._message_lbl.clear()
-        self.count = None
+            if self._timer is not None:
+                self._timer.stop()
+                self._timer = None
+            self._message_lbl.clear()
+            self.count = None
+
 
     def display(self):
         self._message_lbl.clear()

dls_barcode/main_manager.py

@@ -57,6 +57,7 @@ def initialise_scanner(self):
         self._camera_scanner = CameraScanner(self._result_queue, self._view_queue, self._message_queue, self._config)
         self._camera_switch = CameraSwitch(self._camera_scanner, self._config.top_camera_timeout)
         self._restart_live_capture_from_side()
+        self._ui.resetCountdown()
 
     def _camera_capture_alive(self):
         return self._camera_scanner is not None and self._camera_switch is not None