def __init__(self, *, vsync=True, logger=None):
#
self._logger = logger or get_logger(name='harvesters')
#
super().__init__()
#
self._mutex = QMutex()
profile = True if 'HARVESTER_PROFILE' in os.environ else False
self._harvester_core = HarvesterCore(profile=profile,
logger=self._logger)
self._ia = None # Image Acquirer
#
self._widget_canvas = Canvas2D(vsync=vsync)
self._widget_canvas.create_native()
self._widget_canvas.native.setParent(self)
#
self._action_stop_image_acquisition = None
#
self._observer_widgets = []
#
self._widget_device_list = None
self._widget_status_bar = None
self._widget_main = None
self._widget_about = None
self._widget_attribute_controller = None
#
self._signal_update_statistics.connect(self.update_statistics)
self._signal_stop_image_acquisition.connect(
self._stop_image_acquisition)
self._thread_statistics_measurement = _PyQtThread(
parent=self,
mutex=self._mutex,
worker=self._worker_update_statistics,
update_cycle_us=250000)
#
self._initialize_widgets()
#
for o in self._observer_widgets:
o.update()
def action_on_connect(self):
#
try:
self._ia = self.harvester_core.create_image_acquirer(
self.device_list.currentIndex())
# We want to hold one buffer to keep the chunk data alive:
self._ia.num_buffers += 1
except (
NotInitializedException,
InvalidHandleException,
InvalidIdException,
ResourceInUseException,
InvalidParameterException,
NotImplementedException,
AccessDeniedException,
) as e:
self._logger.error(e, exc_info=True)
if not self._ia:
# The device is not available.
return
#
self.ia.thread_image_acquisition = _PyQtThread(parent=self,
mutex=self._mutex)
self.ia.signal_stop_image_acquisition = self._signal_stop_image_acquisition
try:
if self.ia.remote_device.node_map:
self._widget_attribute_controller = \
AttributeController(
self.ia.remote_device.node_map,
parent=self
)
except AttributeError:
pass
#
self.canvas.ia = self.ia