Inheritance diagram for microscope.gui._Imager:

Public Member Functions
None	__init__ (self, microscope.abc.Camera camera)

None	snap (self)

None	fetchLoop (self)

Static Public Attributes
	imageAcquired = QtCore.Signal(numpy.ndarray)

Protected Attributes
	_camera = camera

	_data_queue = _DataQueue()

Detailed Description

Helper for CameraWidget handling the internals of the camera trigger.

Definition at line 137 of file gui.py.

Constructor & Destructor Documentation

◆ init()

None microscope.gui._Imager.__init__	(		self,
		microscope.abc.Camera	camera )

Definition at line 142 of file gui.py.

    def __init__(self, camera: microscope.abc.Camera) -> None:
        super().__init__()
        self._camera = camera
        self._data_queue = _DataQueue()
        if isinstance(self._camera, Pyro4.Proxy):
            pyro_daemon = Pyro4.Daemon()
            queue_uri = pyro_daemon.register(self._data_queue)
            self._camera.set_client(queue_uri)
            data_thread = threading.Thread(
                target=pyro_daemon.requestLoop, daemon=True
            )
            data_thread.start()
        else:
            self._device.set_client(self._data_queue)
        fetch_thread = threading.Thread(target=self.fetchLoop, daemon=True)
        fetch_thread.start()
 
        # Depending on the Qt backend this might not get called (seems
        # to work on PySide2 but not with PyQt5).  The device itself
        # should be removing clients that no longer work anyway.
        self.destroyed.connect(lambda: self._camera.set_client(None))
 

Member Function Documentation

◆ fetchLoop()

None microscope.gui._Imager.fetchLoop ( self )

Definition at line 167 of file gui.py.

    def fetchLoop(self) -> None:
        while True:
            # We may be getting images faster than we can display so
            # only get the last image in the queue and discard the
            # rest (we could do with a class that only has one item
            # and putting a new item will discard the previous instead
            # of blocking/queue).
            data = self._data_queue.get()
            while not self._data_queue.empty():
                data = self._data_queue.get()
            self.imageAcquired.emit(data)
 
 

◆ snap()

None microscope.gui._Imager.snap ( self )

Definition at line 164 of file gui.py.

    def snap(self) -> None:
        self._camera.trigger()
 

Member Data Documentation

◆ _camera

microscope.gui._Imager._camera = camera

protected

Definition at line 144 of file gui.py.

◆ _data_queue

microscope.gui._Imager._data_queue = _DataQueue()

protected

Definition at line 145 of file gui.py.

◆ imageAcquired

microscope.gui._Imager.imageAcquired = QtCore.Signal(numpy.ndarray)

static

Definition at line 140 of file gui.py.

The documentation for this class was generated from the following file:

BioImager/PythonMicroscope/microscope/gui.py

Public Member Functions

Static Public Attributes

Protected Attributes