class DisplayThread(QtCore.QThread):
spectrum_ready = QtCore.Signal(np.ndarray)
spectra_ready = QtCore.Signal(list)
def __init__(self, parent):
super(DisplayThread, self).__init__()
self.parent = parent
self.single_shot = False
self.refresh_rate = 30.
def run(self):
t0 = time.time()
while self.parent.live_button.isChecked() or self.single_shot:
read_processed_spectrum = self.parent.spectrometer.read_processed_spectra \
if isinstance(self.parent.spectrometer, Spectrometers) \
else self.parent.spectrometer.read_processed_spectrum
spectrum = read_processed_spectrum()
if time.time() - t0 < 1. / self.refresh_rate:
continue
else:
t0 = time.time()
if type(spectrum) == np.ndarray:
self.spectrum_ready.emit(spectrum)
elif type(spectrum) == list:
self.spectra_ready.emit(spectrum)
if self.single_shot:
break
self.finished.emit()
class CameraPreviewWidget(pg.GraphicsView):
"""A Qt Widget to display the live feed from a camera."""
update_data_signal = QtCore.Signal(np.ndarray)
def __init__(self):
super(CameraPreviewWidget, self).__init__()
self.image_item = PreviewImageItem()
self.view_box = PreviewViewBox(lockAspect=1.0, invertY=True)
self.view_box.addItem(self.image_item)
self.view_box.setBackgroundColor([128, 128, 128, 255])
self.setCentralWidget(self.view_box)
self.crosshair = {
'h_line': pg.InfiniteLine(pos=0, angle=0),
'v_line': pg.InfiniteLine(pos=0, angle=90),
}
for item in self.crosshair.values():
self.view_box.addItem(item)
self._image_shape = ()
# We want to make sure we always update the data in the GUI thread.
# This is done using the signal/slot mechanism
self.update_data_signal.connect(self.update_widget,
type=QtCore.Qt.QueuedConnection)
def update_widget(self, newimage):
"""Set the image, but do so in the Qt main loop to avoid threading nasties."""
# I've explicitly dealt with the datatype of the source image, to avoid
# a bug in the way pyqtgraph interacts with numpy 1.10. This means
# scaling the display values will fail for integer data. I've thus
# forced floating-point for anything that isn't a u8, and assumed u8
# wants to be displayed raw. You can always use filter_function to
# tweak the brightness/contrast.
if len(newimage.shape) == 2:
newimage = newimage.transpose()
elif len(newimage.shape) == 3:
newimage = newimage.transpose((1, 0, 2))
if newimage.dtype == "uint8":
self.image_item.setImage(newimage, autoLevels=False)
else:
self.image_item.setImage(newimage.astype(float))
if newimage.shape != self._image_shape:
self._image_shape = newimage.shape
self.set_crosshair_centre(
(newimage.shape[1] / 2.0, newimage.shape[0] / 2.0))
def update_image(self, newimage):
"""Update the image displayed in the preview widget."""
# NB compared to previous versions, pyqtgraph flips in y, hence the
# funny slice on the next line.
self.update_data_signal.emit(newimage)
def add_legacy_click_callback(self, function):
"""Add an old-style (coordinates in fractions-of-an-image) callback."""
self.image_item.legacy_click_callback = function
def set_crosshair_centre(self, pos):
"""Move the crosshair to centre on a given pixel coordinate."""
self.crosshair['h_line'].setValue(pos[0])
self.crosshair['v_line'].setValue(pos[1])
class PowerMeterUI(QtWidgets.QWidget, UiTools):
update_data_signal = QtCore.Signal(np.ndarray)
def __init__(self, pm):
super(PowerMeterUI, self).__init__()
uic.loadUi(os.path.join(os.path.dirname(__file__), 'power_meter.ui'),
self)
self.pm = pm
self.update_condition = threading.Condition()
self.display_thread = DisplayThread(self)
self.SetupSignals()
register_for_property_changes(self.pm, 'live', self.live_changed)
def SetupSignals(self):
self.read_pushButton.clicked.connect(self.button_pressed)
self.live_button.clicked.connect(self.button_pressed)
self.display_thread.ready.connect(self.update_display)
def button_pressed(self):
if self.sender() == self.read_pushButton:
self.display_thread.single_shot = True
elif self.sender() == self.live_button:
self.pm.live = self.live_button.isChecked()
self.display_thread.start()
def update_display(self, power):
self.power_lcdNumber.display(float(power))
def live_changed(self, new):
if self.live_button.isChecked() is not self.pm.live:
self.live_button.setChecked(new)
self.display_thread.start()
class OxfordITCUI(QtWidgets.QWidget):
updateGUI = QtCore.Signal()
def __init__(self, itc):
assert isinstance(itc, OxfordITC), "instrument must be an Oxford ITC"
super(OxfordITCUI, self).__init__()
self.ITC = itc
uic.loadUi(os.path.join(os.path.dirname(__file__), 'OxfordITC.ui'), self)
self.lineEditSetT.returnPressed.connect(self.setT)
self.updateGUI.connect(self.SentUpdateGUI)
self.SentUpdateGUI()
def SentUpdateGUI(self):
self.textEditT.setText(str(self.ITC.params['T']))
self.lineEditSetT.setText(str(self.ITC.params['SetT']))
self.lineEditP.setText(str(self.ITC.params['PID'][0]))
self.lineEditI.setText(str(self.ITC.params['PID'][1]))
self.lineEditD.setText(str(self.ITC.params['PID'][2]))
return
def setT(self):
temp = float(self.lineEditSetT.text())
self.ITC.setSetTemperature(temp)
def __init__(self, solstis):
QtCore.QThread.__init__(self)
self.SolsTiS = solstis
self.signal = QtCore.SIGNAL("SolsTiS_status_update")
self.setTerminationEnabled()
self.SolsTiS.system_status()
def parent(self, index=None):
"""Find the index of the parent of the item at a given index."""
try:
parent = self._index_to_item(index).parent
return self.createIndex(parent.row, 0, parent)
except:
# Something went wrong with finding the parent so return an invalid index
return QtCore.QModelIndex()
def __init__(self, solstis):
QtCore.QThread.__init__(self)
self.SolsTiS = solstis
self.signal = QtCore.SIGNAL("laser_unlocked")
self.setTerminationEnabled()
self.SolsTiS.system_status()
if self.SolsTiS.laser_status['etalon_lock'] != 'on':
self.SolsTiS.etalon_lock('on')
def index(self, row, column, parent_index):
"""Return the index of the <row>th child of parent
:type row: int
:type column: int
:type parent: QtCore.QModelIndex
"""
try:
parent = self._index_to_item(parent_index)
return self.createIndex(row, column, parent.children[row])
except:
return QtCore.QModelIndex()
class QProgressDialogWithDeferredUpdate(QtWidgets.QProgressDialog):
"""A QProcessDialog that can have its value updated from a background thread."""
set_new_value = QtCore.Signal(int)
def __init__(self, *args, **kwargs):
QtWidgets.QProgressDialog.__init__(self, *args, **kwargs)
self.set_new_value.connect(self.setValue,
type=QtCore.Qt.QueuedConnection)
def setValueLater(self, progress):
"""Update the progress bar - but do it in a thread-safe way."""
self.set_new_value.emit(progress)
class FigureCanvasWithDeferredDraw(FigureCanvas):
# This class allows us to use Qt's event loop to draw the canvas from
# the GUI thread, even if the call comes from outside the GUI thread.
# this is necessary if you want to plot from a background thread.
ask_for_redraw = QtCore.Signal()
def __init__(self, figure):
FigureCanvas.__init__(self, figure)
# We connect the ask_for_redraw signal to the FigureCanvas's draw() method.
# using a QueuedConnection ensures that draw() is correctly called in the
# application's main GUI thread.
self.ask_for_redraw.connect(self.draw, type=QtCore.Qt.QueuedConnection)
def draw_in_main_loop(self):
"""Draw the canvas, but do so in the Qt main loop to avoid threading nasties."""
self.ask_for_redraw.emit()
class PreviewImageItem(pg.ImageItem):
legacy_click_callback = None
click_callback_signal = QtCore.Signal(np.ndarray)
def mouseClickEvent(self, ev):
"""Handle a mouse click on the image."""
if ev.button() == QtCore.Qt.LeftButton:
pos = np.array(ev.pos())
if self.legacy_click_callback is not None:
# size = np.array(self.image.shape[:2])
# point = pos/size
# self.legacy_click_callback(point[1], point[0])
self.legacy_click_callback(int(pos[1]), int(pos[0]))
print pos[1], pos[0]
ev.accept()
else:
pass
else:
super(PreviewImageItem, self).mouseClickEvent(ev)
def __init__(self, solstis):
assert isinstance(solstis, SolsTiS), "instrument must be a SolsTiS"
super(SolsTiSUI, self).__init__()
self.SolsTiS = solstis
self.signal = QtCore.SIGNAL('SolsTiSGUIupdate')
self.SolsTiSMonitorThread = None
uic.loadUi(os.path.join(os.path.dirname(__file__), 'SolsTiS.ui'), self)
self.checkBoxSolsTiSLockMonitor.stateChanged.connect(
self.SolsTiSLockMonitor)
self.checkBoxSolsTiSEtalonLock.stateChanged.connect(
self.SolsTiSLockEtalon)
self.checkBoxSolsTiSCavityLock.stateChanged.connect(
self.SolsTiSLockCavity)
self.lineEditSolsTiSWL.returnPressed.connect(self.SolsTiSWL)
self.pushButtonSolsTiSstatusMonitor.clicked.connect(
self.SolsTiSMonitor)
self.pushButtonSolsTiSstopMonitor.clicked.connect(
self.SolsTiSMonitorStop)
class DisplayThread(QtCore.QThread):
ready = QtCore.Signal(float)
def __init__(self, parent):
super(DisplayThread, self).__init__()
self.parent = parent
self.single_shot = False
self.refresh_rate = 4.
def run(self):
t0 = time.time()
while self.parent.pm.live or self.single_shot:
p = self.parent.pm.power
if time.time() - t0 < 1. / self.refresh_rate:
continue
else:
t0 = time.time()
self.ready.emit(p)
if self.single_shot:
self.single_shot = False
break
self.finished.emit()
class DisplayThread(QtCore.QThread):
'''for displaying the temperature'''
ready = QtCore.Signal(float)
def __init__(self, parent):
super(DisplayThread, self).__init__()
self.parent = parent
self.single_shot = False
self.refresh_rate = 1. # every second
def run(self):
t0 = time.time()
while self.parent.live_temperature_checkBox.isChecked(
) or self.single_shot:
T = self.parent.get_temperature()
if time.time() - t0 < 1. / self.refresh_rate:
continue
else:
t0 = time.time()
self.ready.emit(T)
if self.single_shot:
self.single_shot = False
break
self.finished.emit()
class CounterPreviewWidget(QtWidgets.QWidget):
"""A Qt Widget to display the live feed from a camera."""
update_data_signal = QtCore.Signal(np.ndarray)
def __init__(self, counter):
super(CounterPreviewWidget, self).__init__()
# self.plot_item = pg.pl
self.plot_widget = pg.PlotWidget(labels={'bottom': 'Time'})
self.plot = self.plot_widget.getPlotItem()
self.setLayout(QtWidgets.QGridLayout())
self.layout().addWidget(self.plot_widget)
self.counter = counter
# We want to make sure we always update the data in the GUI thread.
# This is done using the signal/slot mechanism
self.update_data_signal.connect(self.update_widget,
type=QtCore.Qt.QueuedConnection)
def update_widget(self, new_data):
"""Set the data to the latest"""
# print 'update',new_data
self.plot.clear()
self.plot.plot(new_data[:, 1] - new_data[0, 1], new_data[:, 0])
class AndorUI(QtWidgets.QWidget, UiTools):
ImageUpdated = QtCore.Signal()
def __init__(self, andor):
assert isinstance(andor, Andor), "instrument must be an Andor"
super(AndorUI, self).__init__()
self.Andor = andor
self.DisplayWidget = None
self.temperature_display_thread = DisplayThread(self)
uic.loadUi((os.path.dirname(__file__) + '/andor.ui'), self)
self._setup_signals()
self.init_gui()
self.binning()
self.data_file = None
self.save_all_parameters = False
self.gui_params = [
'ReadMode', 'Exposure', 'AcquisitionMode', 'OutAmp', 'TriggerMode'
]
self._func_dict = {}
for param in self.gui_params:
func = self.callback_to_update_prop(param)
self._func_dict[param] = func
register_for_property_changes(self.Andor, param,
self._func_dict[param])
if self.Andor.SingleTrack is not None:
c_row, n_rows = self.Andor.SingleTrack
self.spinBoxCenterRow.setValue(c_row)
self.spinBoxNumRows.setValue(n_rows)
def __del__(self):
self._stopTemperatureThread = True
if self.DisplayWidget is not None:
self.DisplayWidget.hide()
self.DisplayWidget.close()
def _setup_signals(self):
self.comboBoxAcqMode.activated.connect(self.acquisition_mode)
self.comboBoxBinning.activated.connect(self.binning)
self.comboBoxReadMode.activated.connect(self.read_mode)
self.comboBoxTrigMode.activated.connect(self.trigger)
self.spinBoxNumFrames.valueChanged.connect(self.number_frames)
self.spinBoxNumFrames.setRange(1, 1000000)
self.spinBoxNumAccum.valueChanged.connect(self.number_accumulations)
self.spinBoxNumRows.valueChanged.connect(self.number_rows)
self.spinBoxCenterRow.valueChanged.connect(self.number_rows)
self.checkBoxROI.stateChanged.connect(self.ROI)
self.checkBoxCrop.stateChanged.connect(self.isolated_crop)
self.checkBoxCooler.stateChanged.connect(self.cooler)
self.checkBoxEMMode.stateChanged.connect(self.output_amplifier)
self.spinBoxEMGain.valueChanged.connect(self.em_gain)
self.lineEditExpT.editingFinished.connect(self.exposure)
self.lineEditExpT.setValidator(QtGui.QDoubleValidator())
self.pushButtonDiv5.clicked.connect(lambda: self.exposure('/'))
self.pushButtonTimes5.clicked.connect(lambda: self.exposure('x'))
self.pushButtonCapture.clicked.connect(self.Capture)
self.pushButtonLive.clicked.connect(self.Live)
self.pushButtonAbort.clicked.connect(self.Abort)
self.save_pushButton.clicked.connect(self.Save)
self.pushButtonTakeBG.clicked.connect(self.take_background)
self.checkBoxRemoveBG.stateChanged.connect(self.remove_background)
self.referesh_groups_pushButton.clicked.connect(self.update_groups_box)
self.keep_shutter_open_checkBox.stateChanged.connect(
self.update_shutter_mode)
self.read_temperature_pushButton.clicked.connect(self.temperature_gui)
self.live_temperature_checkBox.clicked.connect(self.temperature_gui)
self.temperature_display_thread.ready.connect(
self.update_temperature_display)
def init_gui(self):
trig_modes = {0: 0, 1: 1, 6: 2}
self.comboBoxAcqMode.setCurrentIndex(
self.Andor._parameters['AcquisitionMode'] - 1)
self.acquisition_mode()
self.comboBoxReadMode.setCurrentIndex(
self.Andor._parameters['ReadMode'])
self.read_mode()
self.comboBoxTrigMode.setCurrentIndex(
trig_modes[self.Andor._parameters['TriggerMode']])
self.trigger()
self.comboBoxBinning.setCurrentIndex(
np.log2(self.Andor._parameters['Image'][0]))
self.binning()
self.spinBoxNumFrames.setValue(self.Andor._parameters['NKin'])
self.checkBoxEMMode.setChecked(not bool(self.Andor.OutAmp))
if len(self.Andor.capabilities['EMGainCapability']) == 0:
self.checkBoxEMMode.hide()
self.spinBoxEMGain.hide()
self.Andor.get_camera_parameter('AcquisitionTimings')
self.lineEditExpT.setText(
str(float(
'%#e' %
self.Andor._parameters['AcquisitionTimings'][0])).rstrip('0'))
def cooler(self):
self.Andor.cooler = self.checkBoxCooler.isChecked()
def temperature_gui(self):
if self.sender() == self.read_temperature_pushButton:
self.temperature_display_thread.single_shot = True
self.temperature_display_thread.start()
def update_temperature_display(self, temperature):
self.temperature_lcdNumber.display(float(temperature))
def get_temperature(self):
return self.Andor.CurrentTemperature
def update_shutter_mode(self):
self.Andor.keep_shutter_open = self.keep_shutter_open_checkBox.isChecked(
)
def acquisition_mode(self):
available_modes = ['Single', 'Accumulate', 'Kinetic', 'Fast Kinetic']
currentMode = self.comboBoxAcqMode.currentText()
self.Andor.set_camera_parameter('AcquisitionMode',
available_modes.index(currentMode) + 1)
if currentMode == 'Fast Kinetic':
self.spinBoxNumRows.show()
self.labelNumRows.show()
elif currentMode != 'Single track':
self.spinBoxNumRows.hide()
self.labelNumRows.hide()
if currentMode == 'Accumulate':
self.spinBoxNumAccum.show()
self.labelNumAccum.show()
else:
self.spinBoxNumAccum.hide()
self.labelNumAccum.hide()
if (currentMode == 'Fast Kinetic') or (currentMode == 'Kinetic'):
self.keep_shutter_open_checkBox.show()
else:
self.keep_shutter_open_checkBox.hide()
def read_mode(self):
available_modes = [
'FVB', 'Multi-track', 'Random track', 'Single track', 'Image'
]
currentMode = self.comboBoxReadMode.currentText()
self.Andor.set_camera_parameter('ReadMode',
available_modes.index(currentMode))
if currentMode == 'Single track':
self.spinBoxNumRows.show()
self.labelNumRows.show()
self.spinBoxCenterRow.show()
self.labelCenterRow.show()
elif self.comboBoxAcqMode.currentText() != 'Fast Kinetic':
self.spinBoxNumRows.hide()
self.labelNumRows.hide()
self.spinBoxCenterRow.hide()
self.labelCenterRow.hide()
else:
self.spinBoxCenterRow.hide()
self.labelCenterRow.hide()
def update_ReadMode(self, index):
self.comboBoxReadMode.setCurrentIndex(index)
def update_TriggerMode(self, value):
available_modes = {0: 0, 1: 1, 6: 2}
index = available_modes[value]
self.comboBoxTrigMode.setCurrentIndex(index)
def update_Exposure(self, value):
self.lineEditExpT.setText(str(value))
def callback_to_update_prop(self, propname):
"""Return a callback function that refreshes the named parameter."""
def callback(value=None):
getattr(self, 'update_' + propname)(value)
return callback
def trigger(self):
available_modes = {'Internal': 0, 'External': 1, 'ExternalStart': 6}
currentMode = self.comboBoxTrigMode.currentText()
self.Andor.set_camera_parameter('TriggerMode',
available_modes[currentMode])
def output_amplifier(self):
self.Andor.OutAmp = int(not self.checkBoxEMMode.isChecked())
self.checkBoxCrop.setChecked(False)
def binning(self):
current_binning = int(self.comboBoxBinning.currentText()[0])
self.Andor.binning = current_binning
self.Andor.FVBHBin = current_binning
def number_frames(self):
num_frames = self.spinBoxNumFrames.value()
self.Andor.set_camera_parameter('NKin', num_frames)
def number_accumulations(self):
num_frames = self.spinBoxNumAccum.value()
self.Andor.set_camera_parameter('NAccum', num_frames)
def number_rows(self):
num_rows = self.spinBoxNumRows.value()
if self.Andor._parameters['AcquisitionMode'] == 4:
self.Andor.set_fast_kinetics(num_rows)
elif self.Andor._parameters['ReadMode'] == 3:
center_row = self.spinBoxCenterRow.value()
if center_row - num_rows < 0:
self.Andor._logger.info(
'Too many rows provided for Single Track mode. Using %g rows instead'
% center_row)
num_rows = center_row
self.Andor.set_camera_parameter('SingleTrack', center_row,
num_rows)
else:
self.Andor._logger.info(
'Changing the rows only works in Fast Kinetic or in Single Track mode'
)
def exposure(self, input=None):
if input is None:
expT = float(self.lineEditExpT.text())
elif input == 'x':
expT = float(self.lineEditExpT.text()) * 5
elif input == '/':
expT = float(self.lineEditExpT.text()) / 5
self.Andor.Exposure = expT
def em_gain(self):
gain = self.spinBoxEMGain.value()
self.Andor.set_camera_parameter('EMGain', gain)
def isolated_crop(self):
current_binning = self.Andor.binning
gui_roi = self.Andor.gui_roi
maxy = gui_roi[3]
if self.checkBoxEMMode.isChecked():
maxx = gui_roi[1]
else:
shape = self.Andor.DetectorShape
maxx = shape[0] - gui_roi[1]
if self.checkBoxCrop.isChecked():
self.checkBoxROI.setEnabled(False)
self.Andor.IsolatedCropMode = (1, maxy, maxx, current_binning[0],
current_binning[1])
self.Andor.Image = (current_binning[0], current_binning[1], 1,
maxx, 1, maxy)
else:
self.checkBoxROI.setEnabled(True)
self.Andor.IsolatedCropMode = (0, maxy, maxx, current_binning[0],
current_binning[1])
shape = self.Andor.DetectorShape
self.Andor.Image = (current_binning[0], current_binning[1], 1,
shape[0], 1, shape[1])
def take_background(self):
self.Andor.background = self.Andor.raw_snapshot()[1]
self.Andor.backgrounded = True
self.checkBoxRemoveBG.setChecked(True)
def remove_background(self):
if self.checkBoxRemoveBG.isChecked():
self.Andor.backgrounded = True
else:
self.Andor.backgrounded = False
def Save(self):
if self.data_file is None:
self.data_file = df.current()
data = self.Andor.CurImage
if self.filename_lineEdit.text() != 'Filename....':
filename = self.filename_lineEdit.text()
else:
filename = 'Andor_data'
if self.group_comboBox.currentText() == 'AndorData':
if df._use_current_group == True and df._current_group is not None:
group = df._current_group
elif 'AndorData' in list(self.data_file.keys()):
group = self.data_file['AndorData']
else:
group = self.data_file.create_group('AndorData')
else:
group = self.data_file[self.group_comboBox.currentText()]
if np.shape(data)[0] == 1:
data = data[0]
if self.save_all_parameters:
attrs = self.Andor.get_andor_parameters()
else:
attrs = dict()
attrs['Description'] = self.description_plainTextEdit.toPlainText()
if hasattr(self.Andor, 'x_axis'):
attrs['wavelengths'] = self.Andor.x_axis
try:
data_set = group.create_dataset(name=filename, data=data)
except Exception as e:
self.Andor._logger.info(e)
df.attributes_from_dict(data_set, attrs)
if self.Andor.backgrounded == False and 'background' in list(
data_set.attrs.keys()):
del data_set.attrs['background']
def update_groups_box(self):
if self.data_file is None:
self.data_file = df.current()
self.group_comboBox.clear()
if 'AndorData' not in list(self.data_file.values()):
self.group_comboBox.addItem('AndorData')
for group in list(self.data_file.values()):
if type(group) == df.Group:
self.group_comboBox.addItem(group.name[1:], group)
def ROI(self):
if self.checkBoxROI.isChecked():
self.checkBoxCrop.setEnabled(False)
self.Andor.roi = self.Andor.gui_roi # binning + params
else:
self.checkBoxCrop.setEnabled(True)
self.Andor.roi = (0,
self.Andor._parameters['DetectorShape'][0] - 1,
0,
self.Andor._parameters['DetectorShape'][1] - 1)
def Capture(self):
self.Andor.raw_image(update_latest_frame=True)
def Live(self):
self.Andor.live_view = True
def Abort(self):
self.Andor.live_view = False
class DisplayWidgetRoiScale(ExtendedImageView):
_max_num_line_plots = 4
update_data_signal = QtCore.Signal(np.ndarray)
def __init__(self, scale=(1, 1), offset=(0, 0)):
super(DisplayWidgetRoiScale, self).__init__()
self._pxl_scale = scale
self._pxl_offset = offset
self.LineDisplay = self.ui.roiPlot
self.LineDisplay.showGrid(x=True, y=True)
self.ui.splitter.setHandleWidth(10)
self.getHistogramWidget().gradient.restoreState(
list(Gradients.values())[1])
self.imageItem.setTransform(QtGui.QTransform())
self.LineDisplay.show()
self.plot = ()
for ii in range(self._max_num_line_plots):
self.plot += (self.LineDisplay.plot(
pen=pyqtgraph.intColor(ii, self._max_num_line_plots)), )
self.toggle_displays()
self.checkbox_autorange = QtWidgets.QCheckBox('Autorange')
self.tools.gridLayout.addWidget(self.checkbox_autorange, 0, 3, 1, 1)
@property
def x_axis(self):
"""Convenience wrapper for integration with spectrometer code"""
return self.axis_values['bottom']
@x_axis.setter
def x_axis(self, value):
self.axis_values['bottom'] = value
@property
def y_axis(self):
"""Convenience wrapper for integration with spectrometer code"""
return self.axis_values['left']
@y_axis.setter
def y_axis(self, value):
self.axis_values['left'] = value
def update_axes(self):
gui_axes = self.get_axes()
for ax, name in zip(gui_axes, ["bottom", "left", "top", "right"]):
if self.axis_values[name] is not None:
setattr(ax, 'axis_values', self.axis_values[name])
if self.axis_units[name] is not None:
ax.setLabel(self.axis_units[name])
# This is kept in case subclasses overwrite the x_axis or y_axis properties
for ax, value in zip(gui_axes[:2], [self.x_axis, self.y_axis]):
if value is not None:
setattr(ax, 'axis_values', value)
def toggle_displays(self, boolean=False):
"""Toggle between an Image display and a Plot widget for Line displays
:param boolean: if True, display lines. If False, display images
:return:
"""
if boolean:
self.LineDisplay.show()
self.LineDisplay.showAxis('left')
self.ui.splitter.setSizes([0, self.height() - 35, 35])
else:
self.ui.splitter.setSizes([self.height() - 35, 0, 35])
def update_image(self, newimage):
scale = self._pxl_scale
offset = self._pxl_offset
if len(newimage.shape) == 1:
self.toggle_displays(True)
self.plot[0].setData(x=self.x_axis, y=newimage)
elif len(newimage.shape) == 2:
if newimage.shape[0] > self._max_num_line_plots:
self.toggle_displays(False)
# levels = [np.percentile(newimage, x) for x in self.levels()]
self.setImage(
newimage,
pos=offset,
autoRange=self.checkbox_autorange.isChecked(),
# levels=levels,
scale=scale)
else:
self.toggle_displays(True)
for ii, ydata in enumerate(newimage):
self.plot[ii].setData(x=self.x_axis, y=ydata)
elif len(newimage.shape) == 3:
self.toggle_displays(False)
zvals = 0.99 * np.linspace(0, newimage.shape[0] - 1,
newimage.shape[0])
if newimage.shape[0] == 1:
newimage = newimage[0]
# levels = [np.percentile(newimage, x) for x in self.levels()]
self.setImage(
newimage,
xvals=zvals,
pos=offset,
autoRange=self.checkbox_autorange.isChecked(),
# levels=levels,
scale=scale)
else:
raise ValueError('Cannot display. Array shape unrecognised')
class StreakUI(QtWidgets.QWidget):
ImageUpdated = QtCore.Signal()
def __init__(self, streak):
super(StreakUI, self).__init__()
self.Streak = streak
uic.loadUi((os.path.dirname(__file__) + '/Streak.ui'), self)
self.comboBoxGateMode.activated.connect(self.gate_mode)
self.comboBoxReadMode.activated.connect(self.read_mode)
self.comboBoxShutter.activated.connect(self.shutter)
self.comboBoxTrigMode.activated.connect(self.trigger)
self.spinBox_MCPGain.valueChanged.connect(self.mcp_gain)
self.lineEditTimeRange.returnPressed.connect(self.time_range)
self.comboBoxTimeUnit.activated.connect(self.time_range)
self.pushButtonLess.clicked.connect(lambda: self.time_range('-'))
self.pushButtonMore.clicked.connect(lambda: self.time_range('+'))
self.pushButtonCapture.clicked.connect(
lambda: self.Streak.raw_image(update_latest_frame=True))
def gate_mode(self):
mode = str(self.comboBoxGateMode.currentText())
self.Streak.set_parameter('Devices', 'TD', 'Gate Mode', mode)
def read_mode(self):
mode = str(self.comboBoxReadMode.currentText())
self.Streak.set_parameter('Devices', 'TD', 'Mode', mode)
def shutter(self):
mode = str(self.comboBoxShutter.currentText())
self.Streak.set_parameter('Devices', 'TD', 'Shutter', mode)
def trigger(self):
mode = str(self.comboBoxTrigMode.currentText())
self.Streak.set_parameter('Devices', 'TD', 'Trig. Mode', mode)
def mcp_gain(self):
gain = int(self.spinBox_MCPGain.value())
self.Streak.set_parameter('Devices', 'TD', 'MCP Gain', gain)
def time_range(self, direction=None):
allowed_times = {
'ns': [5, 10, 20, 50, 100, 200, 500],
'us': [1, 2, 5, 10, 20, 50, 100, 200, 500],
'ms': [1]
}
unit = str(self.comboBoxTimeUnit.currentText())
given_number = int(self.lineEditTimeRange.text())
if direction is '+':
if not (unit == 'ms' and given_number == 1):
next_unit = str(unit)
if given_number != 500:
next_number = allowed_times[unit][
allowed_times[unit].index(given_number) + 1]
else:
next_number = 1
if unit == 'ns':
self.comboBoxTimeUnit.setCurrentIndex(1)
next_unit = 'us'
elif unit == 'us':
self.comboBoxTimeUnit.setCurrentIndex(2)
next_unit = 'ms'
self.lineEditTimeRange.setText(str(next_number))
unit = str(next_unit)
else:
self.Streak._logger.info(
'Tried increasing the maximum time range')
return
elif direction is '-':
if not (unit == 'ns' and given_number == 5):
next_unit = str(unit)
if given_number != 1:
next_number = allowed_times[unit][
allowed_times[unit].index(given_number) - 1]
else:
next_number = 500
if unit == 'ms':
self.comboBoxTimeUnit.setCurrentIndex(1)
next_unit = 'us'
elif unit == 'us':
self.comboBoxTimeUnit.setCurrentIndex(0)
next_unit = 'ns'
self.lineEditTimeRange.setText(str(next_number))
unit = str(next_unit)
else:
self.Streak._logger.info(
'Tried decreasing the minimum time range')
return
else:
next_number = min(allowed_times[unit],
key=lambda x: abs(x - given_number))
self.lineEditTimeRange.setText(str(next_number))
# Some camera models don't give you direct access to the time range, but rather you preset a finite number of
# settings that you then switch between
try:
self.Streak.set_parameter('Devices', 'TD', 'Time Range',
str(next_number) + ' ' + unit)
except StreakError:
self.Streak.set_parameter('Devices', 'TD', 'Time Range',
str(next_number))
class Frequency_counter_F390(SerialInstrument):
port_settings = dict(baudrate=115200,
bytesize=serial.EIGHTBITS,
parity=serial.PARITY_NONE,
xonxoff=True,
timeout=1.0)
termination_character = "\n"
update_data_signal = QtCore.Signal(np.ndarray)
def __init__(self, port=None, integration_time=1):
SerialInstrument.__init__(self, port=port)
self.live_window = 100
self._live_view = False
self.int_time = integration_time
self.write('FO') #do not apply low pass filter
self.write('Z5') #for 50 Ohms impedance
function_dict = {
'0': 'B Input Period',
'1': 'A Input Period',
'2': 'A Input Frequency',
'3': 'B Input Frequency',
'4': 'Frequency Ratio B:A',
'5': 'A Input Width High',
'6': 'A Input Width Low',
'7': 'A Input Count',
'8': 'A Input Ratio H:L',
'9': 'A Input Duty Cycle',
'C': 'C Input Frequency',
'D': 'C Input Period'
}
def get_function(self):
'''A property to set the required function of the frequency counter
Args:
f: the a string value of the function shown in the table below and in self.function_dict
0 B Input Period
1 A Input Period
2 A Input Frequency
3 B Input Frequency
4 Frequency Ratio B:A
5 A Input Width High
6 A Input Width Low
7 A Input Count
8 A Input Ratio H:L
9 A Input Duty Cycle
C C Input Frequency
D C Input Period
returns:
the current function
'''
return self.function_dict(self._function)
def set_function(self, f):
self._function = str(f)
self.write('F' + str(f))
function = property(fget=get_function, fset=set_function)
def get_identity(self):
'''Returns the device id (good for testing comms) '''
return self.query('*IDN?')
def test_communications(self):
'''A command to allow autodetection to work '''
if self.get_identity().split(',')[0] == 'Thurlby-Thandar':
return True
def measure_next(self):
'''Return the next valid measurement'''
try:
return float(self.query('N?')[:-2])
except:
print(self.query('N?')[:-2])
def measure_next_fast(self):
'''Return the invalid measurement (i.e. refereshs at LCD refresh rate, not the measreument rate)'''
try:
return float(self.query('?')[:-2])
except:
print(self.query('?')[:-2])
# def start_countinous_fast(self):
# '''Starts fast streaming of values at the LCD refresh rate '''
# self.write('C?')
# def start_countinous_single(self):
# '''Starts continuous streaming of values at the rate of the measurement time'''
# self.write('E?')
# def stop_countinous(self):
# self.write('STOP')
def get_live_view_window(self):
return self._live_window
def set_live_view_window(self, window_length):
self._live_window = window_length
'''Set the number of the stored values in the deque '''
self.live_deque = deque(maxlen=window_length)
live_window = NotifiedProperty(get_live_view_window, set_live_view_window)
int_times = {0.3: '1', 1: '2', 10: '3', 100: '4'}
impedances = {'50': 'Z5', '1M': 'Z1'}
def get_int_time(self):
'''A property for the integration time possible values are:
0.3 s, 1s, 10s,100s '''
return self._int_time
def set_int_time(self, integration_time):
self._int_time = integration_time
try:
self.write('M' + self.int_times[integration_time])
except KeyError:
self.log('Invalid integration time', level='WARN')
int_time = NotifiedProperty(get_int_time, set_int_time)
def get_qt_ui(self):
self.ui = CounterUI(self)
self.display_ui = self.ui.preview_widget
self.control_ui = self.ui.control_widget
return self.ui
def get_preview_widget(self):
self.display_ui = CounterPreviewWidget(self)
return self.display_ui
def get_control_widget(self):
self.control_ui = CounterControlUI(self)
return self.control_ui
def _live_view_function(self):
'''The function that is run within the live preview thread '''
while self._live_view:
data = None
data = self.measure_next_fast()
# while data == None:
time.sleep(self.int_time)
self.live_deque.append([data, time.time()])
self.display_ui.update_data_signal.emit(np.array(self.live_deque))
def get_live_view(self):
'''Setting up the notificed property
live view to allow live view to be switch on and off '''
return self._live_view
def set_live_view(self, enabled):
if enabled == True:
try:
self._live_view = True
self._live_view_stop_event = threading.Event()
self._live_view_thread = threading.Thread(
target=self._live_view_function)
self._live_view_thread.start()
except AttributeError as e: #if any of the attributes aren't there
print("Error:", e)
else:
if not self._live_view:
return # do nothing if it's not running.
print("stopping live view thread")
try:
self._live_view = False
self._live_view_stop_event.set()
self._live_view_thread.join()
del (self._live_view_stop_event, self._live_view_thread)
except AttributeError:
raise Exception(
"Tried to stop live view but it doesn't appear to be running!"
)
live_view = NotifiedProperty(get_live_view, set_live_view)
def sizeHint(self):
return QtCore.QSize(1024, 768)
