class QSpectrumAnalyzerMainWindow(QtGui.QMainWindow,
Ui_QSpectrumAnalyzerMainWindow):
"""QSpectrumAnalyzer main window"""
def __init__(self, parent=None):
# Initialize UI
super().__init__(parent)
self.setupUi(self)
# Create plot widgets and update UI
self.spectrumPlotWidget = SpectrumPlotWidget(self.mainPlotLayout)
self.waterfallPlotWidget = WaterfallPlotWidget(
self.waterfallPlotLayout, self.histogramPlotLayout)
# Link main spectrum plot to waterfall plot
self.spectrumPlotWidget.plot.setXLink(self.waterfallPlotWidget.plot)
# Setup rtl_power thread and connect signals
self.prev_data_timestamp = None
self.data_storage = None
self.rtl_power_thread = None
self.setup_rtl_power_thread()
self.update_buttons()
self.load_settings()
def setup_rtl_power_thread(self):
"""Create rtl_power_thread and connect signals to slots"""
if self.rtl_power_thread:
self.stop()
settings = QtCore.QSettings()
self.data_storage = DataStorage(max_history_size=settings.value(
"waterfall_history_size", 100, int))
self.data_storage.data_updated.connect(self.update_data)
self.data_storage.data_updated.connect(
self.spectrumPlotWidget.update_plot)
self.data_storage.data_updated.connect(
self.spectrumPlotWidget.update_persistence)
self.data_storage.data_recalculated.connect(
self.spectrumPlotWidget.recalculate_plot)
self.data_storage.data_recalculated.connect(
self.spectrumPlotWidget.recalculate_persistence)
self.data_storage.history_updated.connect(
self.waterfallPlotWidget.update_plot)
self.data_storage.average_updated.connect(
self.spectrumPlotWidget.update_average)
self.data_storage.peak_hold_max_updated.connect(
self.spectrumPlotWidget.update_peak_hold_max)
self.data_storage.peak_hold_min_updated.connect(
self.spectrumPlotWidget.update_peak_hold_min)
backend = settings.value("backend", "rtl_power")
if backend == "rtl_power_fftw":
self.rtl_power_thread = RtlPowerFftwThread(self.data_storage)
else:
self.rtl_power_thread = RtlPowerThread(self.data_storage)
self.rtl_power_thread.rtlPowerStarted.connect(self.update_buttons)
self.rtl_power_thread.rtlPowerStopped.connect(self.update_buttons)
def set_dock_size(self, dock, width, height):
"""Ugly hack for resizing QDockWidget (because it doesn't respect minimumSize / sizePolicy set in Designer)
Link: https://stackoverflow.com/questions/2722939/c-resize-a-docked-qt-qdockwidget-programmatically"""
old_min_size = dock.minimumSize()
old_max_size = dock.maximumSize()
if width >= 0:
if dock.width() < width:
dock.setMinimumWidth(width)
else:
dock.setMaximumWidth(width)
if height >= 0:
if dock.height() < height:
dock.setMinimumHeight(height)
else:
dock.setMaximumHeight(height)
QtCore.QTimer.singleShot(
0, lambda: self.set_dock_size_callback(dock, old_min_size,
old_max_size))
def set_dock_size_callback(self, dock, old_min_size, old_max_size):
"""Return to original QDockWidget minimumSize and maximumSize after running set_dock_size()"""
dock.setMinimumSize(old_min_size)
dock.setMaximumSize(old_max_size)
def load_settings(self):
"""Restore spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
self.startFreqSpinBox.setValue(
settings.value("start_freq", 87.0, float))
self.stopFreqSpinBox.setValue(settings.value("stop_freq", 108.0,
float))
self.binSizeSpinBox.setValue(settings.value("bin_size", 10.0, float))
self.intervalSpinBox.setValue(settings.value("interval", 10.0, float))
self.gainSpinBox.setValue(settings.value("gain", 0, int))
self.ppmSpinBox.setValue(settings.value("ppm", 0, int))
self.cropSpinBox.setValue(settings.value("crop", 0, int))
self.mainCurveCheckBox.setChecked(settings.value("main_curve", 1, int))
self.peakHoldMaxCheckBox.setChecked(
settings.value("peak_hold_max", 0, int))
self.peakHoldMinCheckBox.setChecked(
settings.value("peak_hold_min", 0, int))
self.averageCheckBox.setChecked(settings.value("average", 0, int))
self.smoothCheckBox.setChecked(settings.value("smooth", 0, int))
self.persistenceCheckBox.setChecked(
settings.value("persistence", 0, int))
# Restore window state
if settings.value("window_state"):
self.restoreState(settings.value("window_state"))
if settings.value("plotsplitter_state"):
self.plotSplitter.restoreState(
settings.value("plotsplitter_state"))
# Migration from older version of config file
if settings.value("config_version", 1, int) < 2:
# Make tabs from docks when started for first time
self.tabifyDockWidget(self.settingsDockWidget,
self.levelsDockWidget)
self.settingsDockWidget.raise_()
self.set_dock_size(self.controlsDockWidget, 0, 0)
self.set_dock_size(self.frequencyDockWidget, 0, 0)
# Update config version
settings.setValue("config_version", 2)
# Window geometry has to be restored only after show(), because initial
# maximization doesn't work otherwise (at least not in some window managers on X11)
self.show()
if settings.value("window_geometry"):
self.restoreGeometry(settings.value("window_geometry"))
def save_settings(self):
"""Save spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
settings.setValue("start_freq", self.startFreqSpinBox.value())
settings.setValue("stop_freq", self.stopFreqSpinBox.value())
settings.setValue("bin_size", self.binSizeSpinBox.value())
settings.setValue("interval", self.intervalSpinBox.value())
settings.setValue("gain", self.gainSpinBox.value())
settings.setValue("ppm", self.ppmSpinBox.value())
settings.setValue("crop", self.cropSpinBox.value())
settings.setValue("main_curve",
int(self.mainCurveCheckBox.isChecked()))
settings.setValue("peak_hold_max",
int(self.peakHoldMaxCheckBox.isChecked()))
settings.setValue("peak_hold_min",
int(self.peakHoldMinCheckBox.isChecked()))
settings.setValue("average", int(self.averageCheckBox.isChecked()))
settings.setValue("smooth", int(self.smoothCheckBox.isChecked()))
settings.setValue("persistence",
int(self.persistenceCheckBox.isChecked()))
# Save window state and geometry
settings.setValue("window_geometry", self.saveGeometry())
settings.setValue("window_state", self.saveState())
settings.setValue("plotsplitter_state", self.plotSplitter.saveState())
def show_status(self, message, timeout=2000):
"""Show message in status bar"""
self.statusbar.showMessage(message, timeout)
def update_buttons(self):
"""Update state of control buttons"""
self.startButton.setEnabled(not self.rtl_power_thread.alive)
self.singleShotButton.setEnabled(not self.rtl_power_thread.alive)
self.stopButton.setEnabled(self.rtl_power_thread.alive)
def update_data(self, data_storage):
"""Update GUI when new data is received"""
# Show number of hops and how much time did the sweep really take
timestamp = time.time()
sweep_time = timestamp - self.prev_data_timestamp
self.prev_data_timestamp = timestamp
self.show_status(self.tr(
"Frequency hops: {} | Sweep time: {:.2f} s | FPS: {:.2f}").format(
self.rtl_power_thread.params["hops"] or self.tr("N/A"),
sweep_time, 1 / sweep_time),
timeout=0)
def start(self, single_shot=False):
"""Start rtl_power thread"""
settings = QtCore.QSettings()
self.prev_data_timestamp = time.time()
self.data_storage.reset()
self.data_storage.set_smooth(bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window",
"hanning"),
recalculate=False)
self.waterfallPlotWidget.history_size = settings.value(
"waterfall_history_size", 100, int)
self.waterfallPlotWidget.clear_plot()
self.spectrumPlotWidget.main_curve = bool(
self.mainCurveCheckBox.isChecked())
self.spectrumPlotWidget.main_color = str_to_color(
settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max = bool(
self.peakHoldMaxCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(
settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min = bool(
self.peakHoldMinCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(
settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average = bool(
self.averageCheckBox.isChecked())
self.spectrumPlotWidget.average_color = str_to_color(
settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence = bool(
self.persistenceCheckBox.isChecked())
self.spectrumPlotWidget.persistence_length = settings.value(
"persistence_length", 5, int)
self.spectrumPlotWidget.persistence_decay = settings.value(
"persistence_decay", "exponential")
self.spectrumPlotWidget.persistence_color = str_to_color(
settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.clear_plot()
self.spectrumPlotWidget.clear_peak_hold_max()
self.spectrumPlotWidget.clear_peak_hold_min()
self.spectrumPlotWidget.clear_average()
self.spectrumPlotWidget.clear_persistence()
if not self.rtl_power_thread.alive:
self.rtl_power_thread.setup(
float(self.startFreqSpinBox.value()),
float(self.stopFreqSpinBox.value()),
float(self.binSizeSpinBox.value()),
interval=float(self.intervalSpinBox.value()),
gain=int(self.gainSpinBox.value()),
ppm=int(self.ppmSpinBox.value()),
crop=int(self.cropSpinBox.value()) / 100.0,
single_shot=single_shot,
device_index=settings.value("device_index", 0, int),
sample_rate=settings.value("sample_rate", 2560000, int))
self.rtl_power_thread.start()
def stop(self):
"""Stop rtl_power thread"""
if self.rtl_power_thread.alive:
self.rtl_power_thread.stop()
@QtCore.pyqtSlot()
def on_startButton_clicked(self):
self.start()
@QtCore.pyqtSlot()
def on_singleShotButton_clicked(self):
self.start(single_shot=True)
@QtCore.pyqtSlot()
def on_stopButton_clicked(self):
self.stop()
@QtCore.pyqtSlot(bool)
def on_mainCurveCheckBox_toggled(self, checked):
self.spectrumPlotWidget.main_curve = checked
if self.spectrumPlotWidget.curve.xData is None:
self.spectrumPlotWidget.update_plot(self.data_storage)
self.spectrumPlotWidget.curve.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_peakHoldMaxCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_max = checked
if self.spectrumPlotWidget.curve_peak_hold_max.xData is None:
self.spectrumPlotWidget.update_peak_hold_max(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_max.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_peakHoldMinCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_min = checked
if self.spectrumPlotWidget.curve_peak_hold_min.xData is None:
self.spectrumPlotWidget.update_peak_hold_min(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_min.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_averageCheckBox_toggled(self, checked):
self.spectrumPlotWidget.average = checked
if self.spectrumPlotWidget.curve_average.xData is None:
self.spectrumPlotWidget.update_average(self.data_storage)
self.spectrumPlotWidget.curve_average.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_persistenceCheckBox_toggled(self, checked):
self.spectrumPlotWidget.persistence = checked
if self.spectrumPlotWidget.persistence_curves[0].xData is None:
self.spectrumPlotWidget.recalculate_persistence(self.data_storage)
for curve in self.spectrumPlotWidget.persistence_curves:
curve.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_smoothCheckBox_toggled(self, checked):
settings = QtCore.QSettings()
self.data_storage.set_smooth(checked,
settings.value("smooth_length", 11, int),
settings.value("smooth_window",
"hanning"),
recalculate=True)
@QtCore.pyqtSlot()
def on_smoothButton_clicked(self):
dialog = QSpectrumAnalyzerSmooth(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.data_storage.set_smooth(
bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window", "hanning"),
recalculate=True)
@QtCore.pyqtSlot()
def on_persistenceButton_clicked(self):
prev_persistence_length = self.spectrumPlotWidget.persistence_length
dialog = QSpectrumAnalyzerPersistence(self)
if dialog.exec_():
settings = QtCore.QSettings()
persistence_length = settings.value("persistence_length", 5, int)
self.spectrumPlotWidget.persistence_length = persistence_length
self.spectrumPlotWidget.persistence_decay = settings.value(
"persistence_decay", "exponential")
# If only decay function has been changed, just reset colors
if persistence_length == prev_persistence_length:
self.spectrumPlotWidget.set_colors()
else:
self.spectrumPlotWidget.recalculate_persistence(
self.data_storage)
@QtCore.pyqtSlot()
def on_colorsButton_clicked(self):
dialog = QSpectrumAnalyzerColors(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.spectrumPlotWidget.main_color = str_to_color(
settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(
settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(
settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average_color = str_to_color(
settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence_color = str_to_color(
settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.set_colors()
@QtCore.pyqtSlot()
def on_action_Settings_triggered(self):
dialog = QSpectrumAnalyzerSettings(self)
if dialog.exec_():
self.setup_rtl_power_thread()
@QtCore.pyqtSlot()
def on_action_About_triggered(self):
QtGui.QMessageBox.information(
self, self.tr("About - QSpectrumAnalyzer"),
self.tr("QSpectrumAnalyzer {}").format(__version__))
@QtCore.pyqtSlot()
def on_action_Quit_triggered(self):
self.close()
def closeEvent(self, event):
"""Save settings when main window is closed"""
self.stop()
self.save_settings()
class QSpectrumAnalyzerMainWindow(QtGui.QMainWindow, Ui_QSpectrumAnalyzerMainWindow):
"""QSpectrumAnalyzer main window"""
def __init__(self, parent=None):
# Initialize UI
super().__init__(parent)
self.setupUi(self)
# Create plot widgets and update UI
self.spectrumPlotWidget = SpectrumPlotWidget(self.mainPlotLayout)
self.waterfallPlotWidget = WaterfallPlotWidget(self.waterfallPlotLayout, self.histogramPlotLayout)
# Link main spectrum plot to waterfall plot
self.spectrumPlotWidget.plot.setXLink(self.waterfallPlotWidget.plot)
# Setup rtl_power thread and connect signals
self.prev_data_timestamp = None
self.data_storage = None
self.rtl_power_thread = None
self.setup_rtl_power_thread()
self.update_buttons()
self.load_settings()
def setup_rtl_power_thread(self):
"""Create rtl_power_thread and connect signals to slots"""
if self.rtl_power_thread:
self.stop()
settings = QtCore.QSettings()
self.data_storage = DataStorage(max_history_size=settings.value("waterfall_history_size", 100, int))
self.data_storage.data_updated.connect(self.update_data)
self.data_storage.data_updated.connect(self.spectrumPlotWidget.update_plot)
self.data_storage.data_updated.connect(self.spectrumPlotWidget.update_persistence)
self.data_storage.data_recalculated.connect(self.spectrumPlotWidget.recalculate_plot)
self.data_storage.data_recalculated.connect(self.spectrumPlotWidget.recalculate_persistence)
self.data_storage.history_updated.connect(self.waterfallPlotWidget.update_plot)
self.data_storage.average_updated.connect(self.spectrumPlotWidget.update_average)
self.data_storage.peak_hold_max_updated.connect(self.spectrumPlotWidget.update_peak_hold_max)
self.data_storage.peak_hold_min_updated.connect(self.spectrumPlotWidget.update_peak_hold_min)
backend = settings.value("backend", "rtl_power")
if backend == "rtl_power_fftw":
self.rtl_power_thread = RtlPowerFftwThread(self.data_storage)
else:
self.rtl_power_thread = RtlPowerThread(self.data_storage)
self.rtl_power_thread.rtlPowerStarted.connect(self.update_buttons)
self.rtl_power_thread.rtlPowerStopped.connect(self.update_buttons)
def set_dock_size(self, dock, width, height):
"""Ugly hack for resizing QDockWidget (because it doesn't respect minimumSize / sizePolicy set in Designer)
Link: https://stackoverflow.com/questions/2722939/c-resize-a-docked-qt-qdockwidget-programmatically"""
old_min_size = dock.minimumSize()
old_max_size = dock.maximumSize()
if width >= 0:
if dock.width() < width:
dock.setMinimumWidth(width)
else:
dock.setMaximumWidth(width)
if height >= 0:
if dock.height() < height:
dock.setMinimumHeight(height)
else:
dock.setMaximumHeight(height)
QtCore.QTimer.singleShot(0, lambda: self.set_dock_size_callback(dock, old_min_size, old_max_size))
def set_dock_size_callback(self, dock, old_min_size, old_max_size):
"""Return to original QDockWidget minimumSize and maximumSize after running set_dock_size()"""
dock.setMinimumSize(old_min_size)
dock.setMaximumSize(old_max_size)
def load_settings(self):
"""Restore spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
self.startFreqSpinBox.setValue(settings.value("start_freq", 87.0, float))
self.stopFreqSpinBox.setValue(settings.value("stop_freq", 108.0, float))
self.binSizeSpinBox.setValue(settings.value("bin_size", 10.0, float))
self.intervalSpinBox.setValue(settings.value("interval", 10.0, float))
self.gainSpinBox.setValue(settings.value("gain", 0, int))
self.ppmSpinBox.setValue(settings.value("ppm", 0, int))
self.cropSpinBox.setValue(settings.value("crop", 0, int))
self.mainCurveCheckBox.setChecked(settings.value("main_curve", 1, int))
self.peakHoldMaxCheckBox.setChecked(settings.value("peak_hold_max", 0, int))
self.peakHoldMinCheckBox.setChecked(settings.value("peak_hold_min", 0, int))
self.averageCheckBox.setChecked(settings.value("average", 0, int))
self.smoothCheckBox.setChecked(settings.value("smooth", 0, int))
self.persistenceCheckBox.setChecked(settings.value("persistence", 0, int))
# Restore window state
if settings.value("window_state"):
self.restoreState(settings.value("window_state"))
if settings.value("plotsplitter_state"):
self.plotSplitter.restoreState(settings.value("plotsplitter_state"))
# Migration from older version of config file
if settings.value("config_version", 1, int) < 2:
# Make tabs from docks when started for first time
self.tabifyDockWidget(self.settingsDockWidget, self.levelsDockWidget)
self.settingsDockWidget.raise_()
self.set_dock_size(self.controlsDockWidget, 0, 0)
self.set_dock_size(self.frequencyDockWidget, 0, 0)
# Update config version
settings.setValue("config_version", 2)
# Window geometry has to be restored only after show(), because initial
# maximization doesn't work otherwise (at least not in some window managers on X11)
self.show()
if settings.value("window_geometry"):
self.restoreGeometry(settings.value("window_geometry"))
def save_settings(self):
"""Save spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
settings.setValue("start_freq", self.startFreqSpinBox.value())
settings.setValue("stop_freq", self.stopFreqSpinBox.value())
settings.setValue("bin_size", self.binSizeSpinBox.value())
settings.setValue("interval", self.intervalSpinBox.value())
settings.setValue("gain", self.gainSpinBox.value())
settings.setValue("ppm", self.ppmSpinBox.value())
settings.setValue("crop", self.cropSpinBox.value())
settings.setValue("main_curve", int(self.mainCurveCheckBox.isChecked()))
settings.setValue("peak_hold_max", int(self.peakHoldMaxCheckBox.isChecked()))
settings.setValue("peak_hold_min", int(self.peakHoldMinCheckBox.isChecked()))
settings.setValue("average", int(self.averageCheckBox.isChecked()))
settings.setValue("smooth", int(self.smoothCheckBox.isChecked()))
settings.setValue("persistence", int(self.persistenceCheckBox.isChecked()))
# Save window state and geometry
settings.setValue("window_geometry", self.saveGeometry())
settings.setValue("window_state", self.saveState())
settings.setValue("plotsplitter_state", self.plotSplitter.saveState())
def show_status(self, message, timeout=2000):
"""Show message in status bar"""
self.statusbar.showMessage(message, timeout)
def update_buttons(self):
"""Update state of control buttons"""
self.startButton.setEnabled(not self.rtl_power_thread.alive)
self.singleShotButton.setEnabled(not self.rtl_power_thread.alive)
self.stopButton.setEnabled(self.rtl_power_thread.alive)
def update_data(self, data_storage):
"""Update GUI when new data is received"""
# Show number of hops and how much time did the sweep really take
timestamp = time.time()
sweep_time = timestamp - self.prev_data_timestamp
self.prev_data_timestamp = timestamp
self.show_status(
self.tr("Frequency hops: {} | Sweep time: {:.2f} s | FPS: {:.2f}").format(
self.rtl_power_thread.params["hops"] or self.tr("N/A"),
sweep_time,
1 / sweep_time
),
timeout=0
)
def start(self, single_shot=False):
"""Start rtl_power thread"""
settings = QtCore.QSettings()
self.prev_data_timestamp = time.time()
self.data_storage.reset()
self.data_storage.set_smooth(
bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window", "hanning"),
recalculate=False
)
self.waterfallPlotWidget.history_size = settings.value("waterfall_history_size", 100, int)
self.waterfallPlotWidget.clear_plot()
self.spectrumPlotWidget.main_curve = bool(self.mainCurveCheckBox.isChecked())
self.spectrumPlotWidget.main_color = str_to_color(settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max = bool(self.peakHoldMaxCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min = bool(self.peakHoldMinCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average = bool(self.averageCheckBox.isChecked())
self.spectrumPlotWidget.average_color = str_to_color(settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence = bool(self.persistenceCheckBox.isChecked())
self.spectrumPlotWidget.persistence_length = settings.value("persistence_length", 5, int)
self.spectrumPlotWidget.persistence_decay = settings.value("persistence_decay", "exponential")
self.spectrumPlotWidget.persistence_color = str_to_color(settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.clear_plot()
self.spectrumPlotWidget.clear_peak_hold_max()
self.spectrumPlotWidget.clear_peak_hold_min()
self.spectrumPlotWidget.clear_average()
self.spectrumPlotWidget.clear_persistence()
if not self.rtl_power_thread.alive:
self.rtl_power_thread.setup(float(self.startFreqSpinBox.value()),
float(self.stopFreqSpinBox.value()),
float(self.binSizeSpinBox.value()),
interval=float(self.intervalSpinBox.value()),
gain=int(self.gainSpinBox.value()),
ppm=int(self.ppmSpinBox.value()),
crop=int(self.cropSpinBox.value()) / 100.0,
single_shot=single_shot,
device_index=settings.value("device_index", 0, int),
sample_rate=settings.value("sample_rate", 2560000, int))
self.rtl_power_thread.start()
def stop(self):
"""Stop rtl_power thread"""
if self.rtl_power_thread.alive:
self.rtl_power_thread.stop()
@QtCore.pyqtSlot()
def on_startButton_clicked(self):
self.start()
@QtCore.pyqtSlot()
def on_singleShotButton_clicked(self):
self.start(single_shot=True)
@QtCore.pyqtSlot()
def on_stopButton_clicked(self):
self.stop()
@QtCore.pyqtSlot(bool)
def on_mainCurveCheckBox_toggled(self, checked):
self.spectrumPlotWidget.main_curve = checked
if self.spectrumPlotWidget.curve.xData is None:
self.spectrumPlotWidget.update_plot(self.data_storage)
self.spectrumPlotWidget.curve.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_peakHoldMaxCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_max = checked
if self.spectrumPlotWidget.curve_peak_hold_max.xData is None:
self.spectrumPlotWidget.update_peak_hold_max(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_max.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_peakHoldMinCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_min = checked
if self.spectrumPlotWidget.curve_peak_hold_min.xData is None:
self.spectrumPlotWidget.update_peak_hold_min(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_min.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_averageCheckBox_toggled(self, checked):
self.spectrumPlotWidget.average = checked
if self.spectrumPlotWidget.curve_average.xData is None:
self.spectrumPlotWidget.update_average(self.data_storage)
self.spectrumPlotWidget.curve_average.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_persistenceCheckBox_toggled(self, checked):
self.spectrumPlotWidget.persistence = checked
if self.spectrumPlotWidget.persistence_curves[0].xData is None:
self.spectrumPlotWidget.recalculate_persistence(self.data_storage)
for curve in self.spectrumPlotWidget.persistence_curves:
curve.setVisible(checked)
@QtCore.pyqtSlot(bool)
def on_smoothCheckBox_toggled(self, checked):
settings = QtCore.QSettings()
self.data_storage.set_smooth(
checked,
settings.value("smooth_length", 11, int),
settings.value("smooth_window", "hanning"),
recalculate=True
)
@QtCore.pyqtSlot()
def on_smoothButton_clicked(self):
dialog = QSpectrumAnalyzerSmooth(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.data_storage.set_smooth(
bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window", "hanning"),
recalculate=True
)
@QtCore.pyqtSlot()
def on_persistenceButton_clicked(self):
prev_persistence_length = self.spectrumPlotWidget.persistence_length
dialog = QSpectrumAnalyzerPersistence(self)
if dialog.exec_():
settings = QtCore.QSettings()
persistence_length = settings.value("persistence_length", 5, int)
self.spectrumPlotWidget.persistence_length = persistence_length
self.spectrumPlotWidget.persistence_decay = settings.value("persistence_decay", "exponential")
# If only decay function has been changed, just reset colors
if persistence_length == prev_persistence_length:
self.spectrumPlotWidget.set_colors()
else:
self.spectrumPlotWidget.recalculate_persistence(self.data_storage)
@QtCore.pyqtSlot()
def on_colorsButton_clicked(self):
dialog = QSpectrumAnalyzerColors(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.spectrumPlotWidget.main_color = str_to_color(settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average_color = str_to_color(settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence_color = str_to_color(settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.set_colors()
@QtCore.pyqtSlot()
def on_action_Settings_triggered(self):
dialog = QSpectrumAnalyzerSettings(self)
if dialog.exec_():
self.setup_rtl_power_thread()
@QtCore.pyqtSlot()
def on_action_About_triggered(self):
QtGui.QMessageBox.information(self, self.tr("About - QSpectrumAnalyzer"),
self.tr("QSpectrumAnalyzer {}").format(__version__))
@QtCore.pyqtSlot()
def on_action_Quit_triggered(self):
self.close()
def closeEvent(self, event):
"""Save settings when main window is closed"""
self.stop()
self.save_settings()
class QSpectrumAnalyzerMainWindow(QtWidgets.QMainWindow,
Ui_QSpectrumAnalyzerMainWindow):
"""QSpectrumAnalyzer main window"""
def __init__(self, parent=None):
# Initialize UI
super().__init__(parent)
self.setupUi(self)
# Set window icon
icon_path = os.path.join(os.path.dirname(os.path.realpath(__file__)),
"qspectrumanalyzer.svg")
self.setWindowIcon(QtGui.QIcon(icon_path))
# Create progress bar
self.progressbar = QtWidgets.QProgressBar()
self.progressbar.setMaximumWidth(250)
self.progressbar.setVisible(False)
self.statusbar.addPermanentWidget(self.progressbar)
# Create plot widgets and update UI
self.spectrumPlotWidget = SpectrumPlotWidget(self.mainPlotLayout)
self.waterfallPlotWidget = WaterfallPlotWidget(
self.waterfallPlotLayout, self.histogramPlotLayout)
# Link main spectrum plot to waterfall plot
self.spectrumPlotWidget.plot.setXLink(self.waterfallPlotWidget.plot)
# Setup power thread and connect signals
self.update_status_timer = QtCore.QTimer()
self.update_status_timer.timeout.connect(self.update_status)
self.prev_sweep_time = None
self.prev_data_timestamp = None
self.start_timestamp = None
self.data_storage = None
self.power_thread = None
self.backend = None
self.setup_power_thread()
self.update_buttons()
self.load_settings()
def setup_power_thread(self):
"""Create power_thread and connect signals to slots"""
if self.power_thread:
self.stop()
settings = QtCore.QSettings()
self.data_storage = DataStorage(max_history_size=settings.value(
"waterfall_history_size", 100, int))
self.data_storage.data_updated.connect(self.update_data)
self.data_storage.data_updated.connect(
self.spectrumPlotWidget.update_plot)
self.data_storage.data_updated.connect(
self.spectrumPlotWidget.update_persistence)
self.data_storage.data_recalculated.connect(
self.spectrumPlotWidget.recalculate_plot)
self.data_storage.data_recalculated.connect(
self.spectrumPlotWidget.recalculate_persistence)
self.data_storage.history_updated.connect(
self.waterfallPlotWidget.update_plot)
self.data_storage.average_updated.connect(
self.spectrumPlotWidget.update_average)
self.data_storage.peak_hold_max_updated.connect(
self.spectrumPlotWidget.update_peak_hold_max)
self.data_storage.peak_hold_min_updated.connect(
self.spectrumPlotWidget.update_peak_hold_min)
# Setup default values and limits in case that backend is changed
backend = settings.value("backend", "soapy_power")
try:
backend_module = getattr(backends, backend)
except AttributeError:
backend_module = backends.soapy_power
if self.backend is None or backend != self.backend:
self.backend = backend
self.gainSpinBox.setMinimum(backend_module.Info.gain_min)
self.gainSpinBox.setMaximum(backend_module.Info.gain_max)
self.gainSpinBox.setValue(backend_module.Info.gain)
self.startFreqSpinBox.setMinimum(
backend_module.Info.start_freq_min)
self.startFreqSpinBox.setMaximum(
backend_module.Info.start_freq_max)
self.startFreqSpinBox.setValue(backend_module.Info.start_freq)
self.stopFreqSpinBox.setMinimum(backend_module.Info.stop_freq_min)
self.stopFreqSpinBox.setMaximum(backend_module.Info.stop_freq_max)
self.stopFreqSpinBox.setValue(backend_module.Info.stop_freq)
self.binSizeSpinBox.setMinimum(backend_module.Info.bin_size_min)
self.binSizeSpinBox.setMaximum(backend_module.Info.bin_size_max)
self.binSizeSpinBox.setValue(backend_module.Info.bin_size)
self.intervalSpinBox.setMinimum(backend_module.Info.interval_min)
self.intervalSpinBox.setMaximum(backend_module.Info.interval_max)
self.intervalSpinBox.setValue(backend_module.Info.interval)
self.ppmSpinBox.setMinimum(backend_module.Info.ppm_min)
self.ppmSpinBox.setMaximum(backend_module.Info.ppm_max)
self.ppmSpinBox.setValue(backend_module.Info.ppm)
self.cropSpinBox.setMinimum(backend_module.Info.crop_min)
self.cropSpinBox.setMaximum(backend_module.Info.crop_max)
self.cropSpinBox.setValue(backend_module.Info.crop)
# Setup default values and limits in case that LNB LO is changed
lnb_lo = settings.value("lnb_lo", 0, float) / 1e6
start_freq_min = backend_module.Info.start_freq_min + lnb_lo
start_freq_max = backend_module.Info.start_freq_max + lnb_lo
start_freq = self.startFreqSpinBox.value()
stop_freq_min = backend_module.Info.stop_freq_min + lnb_lo
stop_freq_max = backend_module.Info.stop_freq_max + lnb_lo
stop_freq = self.stopFreqSpinBox.value()
self.startFreqSpinBox.setMinimum(
start_freq_min if start_freq_min > 0 else 0)
self.startFreqSpinBox.setMaximum(start_freq_max)
if start_freq < start_freq_min or start_freq > start_freq_max:
self.startFreqSpinBox.setValue(start_freq_min)
self.stopFreqSpinBox.setMinimum(
stop_freq_min if stop_freq_min > 0 else 0)
self.stopFreqSpinBox.setMaximum(stop_freq_max)
if stop_freq < stop_freq_min or stop_freq > stop_freq_max:
self.stopFreqSpinBox.setValue(stop_freq_max)
self.power_thread = backend_module.PowerThread(self.data_storage)
self.power_thread.powerThreadStarted.connect(
self.on_power_thread_started)
self.power_thread.powerThreadStopped.connect(
self.on_power_thread_stopped)
def set_dock_size(self, dock, width, height):
"""Ugly hack for resizing QDockWidget (because it doesn't respect minimumSize / sizePolicy set in Designer)
Link: https://stackoverflow.com/questions/2722939/c-resize-a-docked-qt-qdockwidget-programmatically"""
old_min_size = dock.minimumSize()
old_max_size = dock.maximumSize()
if width >= 0:
if dock.width() < width:
dock.setMinimumWidth(width)
else:
dock.setMaximumWidth(width)
if height >= 0:
if dock.height() < height:
dock.setMinimumHeight(height)
else:
dock.setMaximumHeight(height)
QtCore.QTimer.singleShot(
0, lambda: self.set_dock_size_callback(dock, old_min_size,
old_max_size))
def set_dock_size_callback(self, dock, old_min_size, old_max_size):
"""Return to original QDockWidget minimumSize and maximumSize after running set_dock_size()"""
dock.setMinimumSize(old_min_size)
dock.setMaximumSize(old_max_size)
def load_settings(self):
"""Restore spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
self.startFreqSpinBox.setValue(
settings.value("start_freq", 87.0, float))
self.stopFreqSpinBox.setValue(settings.value("stop_freq", 108.0,
float))
self.binSizeSpinBox.setValue(settings.value("bin_size", 10.0, float))
self.intervalSpinBox.setValue(settings.value("interval", 10.0, float))
self.gainSpinBox.setValue(settings.value("gain", 0, float))
self.ppmSpinBox.setValue(settings.value("ppm", 0, int))
self.cropSpinBox.setValue(settings.value("crop", 0, int))
self.mainCurveCheckBox.setChecked(settings.value("main_curve", 1, int))
self.peakHoldMaxCheckBox.setChecked(
settings.value("peak_hold_max", 0, int))
self.peakHoldMinCheckBox.setChecked(
settings.value("peak_hold_min", 0, int))
self.averageCheckBox.setChecked(settings.value("average", 0, int))
self.smoothCheckBox.setChecked(settings.value("smooth", 0, int))
self.persistenceCheckBox.setChecked(
settings.value("persistence", 0, int))
# Restore window state
if settings.value("window_state"):
self.restoreState(settings.value("window_state"))
if settings.value("plotsplitter_state"):
self.plotSplitter.restoreState(
settings.value("plotsplitter_state"))
# Migration from older version of config file
if settings.value("config_version", 1, int) < 2:
# Make tabs from docks when started for first time
self.tabifyDockWidget(self.settingsDockWidget,
self.levelsDockWidget)
self.settingsDockWidget.raise_()
self.set_dock_size(self.controlsDockWidget, 0, 0)
self.set_dock_size(self.frequencyDockWidget, 0, 0)
# Update config version
settings.setValue("config_version", 2)
# Window geometry has to be restored only after show(), because initial
# maximization doesn't work otherwise (at least not in some window managers on X11)
self.show()
if settings.value("window_geometry"):
self.restoreGeometry(settings.value("window_geometry"))
def save_settings(self):
"""Save spectrum analyzer settings and window geometry"""
settings = QtCore.QSettings()
settings.setValue("start_freq", self.startFreqSpinBox.value())
settings.setValue("stop_freq", self.stopFreqSpinBox.value())
settings.setValue("bin_size", self.binSizeSpinBox.value())
settings.setValue("interval", self.intervalSpinBox.value())
settings.setValue("gain", self.gainSpinBox.value())
settings.setValue("ppm", self.ppmSpinBox.value())
settings.setValue("crop", self.cropSpinBox.value())
settings.setValue("main_curve",
int(self.mainCurveCheckBox.isChecked()))
settings.setValue("peak_hold_max",
int(self.peakHoldMaxCheckBox.isChecked()))
settings.setValue("peak_hold_min",
int(self.peakHoldMinCheckBox.isChecked()))
settings.setValue("average", int(self.averageCheckBox.isChecked()))
settings.setValue("smooth", int(self.smoothCheckBox.isChecked()))
settings.setValue("persistence",
int(self.persistenceCheckBox.isChecked()))
# Save window state and geometry
settings.setValue("window_geometry", self.saveGeometry())
settings.setValue("window_state", self.saveState())
settings.setValue("plotsplitter_state", self.plotSplitter.saveState())
def show_status(self, message, timeout=2000):
"""Show message in status bar"""
self.statusbar.showMessage(message, timeout)
def update_buttons(self):
"""Update state of control buttons"""
self.startButton.setEnabled(not self.power_thread.alive)
self.singleShotButton.setEnabled(not self.power_thread.alive)
self.stopButton.setEnabled(self.power_thread.alive)
def update_data(self, data_storage):
"""Update GUI when new data is received"""
timestamp = time.time()
self.prev_sweep_time = timestamp - self.prev_data_timestamp
self.prev_data_timestamp = timestamp
self.update_status()
def update_status(self):
"""Update status bar"""
timestamp = time.time()
status = []
if self.power_thread.params["hops"]:
status.append(
self.tr("Frequency hops: {}").format(
self.power_thread.params["hops"]))
status.append(
self.tr(
"Total time: {} | Sweep time: {:.2f} s ({:.2f} FPS)").format(
human_time(timestamp - self.start_timestamp),
self.prev_sweep_time,
(1 / self.prev_sweep_time) if self.prev_sweep_time else 0))
self.show_status(" | ".join(status), timeout=0)
self.update_progress(timestamp - self.prev_data_timestamp)
def update_progress(self, value):
"""Update progress bar"""
value *= 1000
value_max = self.intervalSpinBox.value() * 1000
if value_max < 1000:
return
if value > value_max + 1000:
self.progressbar.setRange(0, 0)
value = value_max
elif value > value_max:
value = value_max
else:
self.progressbar.setRange(0, value_max)
self.progressbar.setValue(value)
def on_power_thread_started(self):
"""Update buttons state when power thread is started"""
self.update_buttons()
self.progressbar.setVisible(True)
def on_power_thread_stopped(self):
"""Update buttons state and status bar when power thread is stopped"""
self.update_buttons()
self.update_status_timer.stop()
self.update_status()
self.progressbar.setVisible(False)
def start(self, single_shot=False):
"""Start power thread"""
settings = QtCore.QSettings()
self.prev_sweep_time = 0
self.prev_data_timestamp = time.time()
self.start_timestamp = self.prev_data_timestamp
if self.intervalSpinBox.value() >= 1:
self.progressbar.setRange(0, self.intervalSpinBox.value() * 1000)
else:
self.progressbar.setRange(0, 0)
self.update_progress(0)
self.update_status_timer.start(100)
self.data_storage.reset()
self.data_storage.set_smooth(bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window",
"hanning"),
recalculate=False)
self.waterfallPlotWidget.history_size = settings.value(
"waterfall_history_size", 100, int)
self.waterfallPlotWidget.clear_plot()
self.spectrumPlotWidget.main_curve = bool(
self.mainCurveCheckBox.isChecked())
self.spectrumPlotWidget.main_color = str_to_color(
settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max = bool(
self.peakHoldMaxCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(
settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min = bool(
self.peakHoldMinCheckBox.isChecked())
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(
settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average = bool(
self.averageCheckBox.isChecked())
self.spectrumPlotWidget.average_color = str_to_color(
settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence = bool(
self.persistenceCheckBox.isChecked())
self.spectrumPlotWidget.persistence_length = settings.value(
"persistence_length", 5, int)
self.spectrumPlotWidget.persistence_decay = settings.value(
"persistence_decay", "exponential")
self.spectrumPlotWidget.persistence_color = str_to_color(
settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.clear_plot()
self.spectrumPlotWidget.clear_peak_hold_max()
self.spectrumPlotWidget.clear_peak_hold_min()
self.spectrumPlotWidget.clear_average()
self.spectrumPlotWidget.clear_persistence()
if not self.power_thread.alive:
self.power_thread.setup(
float(self.startFreqSpinBox.value()),
float(self.stopFreqSpinBox.value()),
float(self.binSizeSpinBox.value()),
interval=float(self.intervalSpinBox.value()),
gain=float(self.gainSpinBox.value()),
ppm=int(self.ppmSpinBox.value()),
crop=int(self.cropSpinBox.value()) / 100.0,
single_shot=single_shot,
device=settings.value("device", ""),
sample_rate=settings.value("sample_rate", 2560000, float),
bandwidth=settings.value("bandwidth", 0, float),
lnb_lo=settings.value("lnb_lo", 0, float))
self.power_thread.start()
def stop(self):
"""Stop power thread"""
if self.power_thread.alive:
self.power_thread.stop()
@QtCore.Slot()
def on_startButton_clicked(self):
self.start()
@QtCore.Slot()
def on_singleShotButton_clicked(self):
self.start(single_shot=True)
@QtCore.Slot()
def on_stopButton_clicked(self):
self.stop()
@QtCore.Slot(bool)
def on_mainCurveCheckBox_toggled(self, checked):
self.spectrumPlotWidget.main_curve = checked
if self.spectrumPlotWidget.curve.xData is None:
self.spectrumPlotWidget.update_plot(self.data_storage)
self.spectrumPlotWidget.curve.setVisible(checked)
@QtCore.Slot(bool)
def on_peakHoldMaxCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_max = checked
if self.spectrumPlotWidget.curve_peak_hold_max.xData is None:
self.spectrumPlotWidget.update_peak_hold_max(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_max.setVisible(checked)
@QtCore.Slot(bool)
def on_peakHoldMinCheckBox_toggled(self, checked):
self.spectrumPlotWidget.peak_hold_min = checked
if self.spectrumPlotWidget.curve_peak_hold_min.xData is None:
self.spectrumPlotWidget.update_peak_hold_min(self.data_storage)
self.spectrumPlotWidget.curve_peak_hold_min.setVisible(checked)
@QtCore.Slot(bool)
def on_averageCheckBox_toggled(self, checked):
self.spectrumPlotWidget.average = checked
if self.spectrumPlotWidget.curve_average.xData is None:
self.spectrumPlotWidget.update_average(self.data_storage)
self.spectrumPlotWidget.curve_average.setVisible(checked)
@QtCore.Slot(bool)
def on_persistenceCheckBox_toggled(self, checked):
self.spectrumPlotWidget.persistence = checked
if self.spectrumPlotWidget.persistence_curves[0].xData is None:
self.spectrumPlotWidget.recalculate_persistence(self.data_storage)
for curve in self.spectrumPlotWidget.persistence_curves:
curve.setVisible(checked)
@QtCore.Slot(bool)
def on_smoothCheckBox_toggled(self, checked):
settings = QtCore.QSettings()
self.data_storage.set_smooth(checked,
settings.value("smooth_length", 11, int),
settings.value("smooth_window",
"hanning"),
recalculate=True)
@QtCore.Slot()
def on_smoothButton_clicked(self):
dialog = QSpectrumAnalyzerSmooth(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.data_storage.set_smooth(
bool(self.smoothCheckBox.isChecked()),
settings.value("smooth_length", 11, int),
settings.value("smooth_window", "hanning"),
recalculate=True)
@QtCore.Slot()
def on_persistenceButton_clicked(self):
prev_persistence_length = self.spectrumPlotWidget.persistence_length
dialog = QSpectrumAnalyzerPersistence(self)
if dialog.exec_():
settings = QtCore.QSettings()
persistence_length = settings.value("persistence_length", 5, int)
self.spectrumPlotWidget.persistence_length = persistence_length
self.spectrumPlotWidget.persistence_decay = settings.value(
"persistence_decay", "exponential")
# If only decay function has been changed, just reset colors
if persistence_length == prev_persistence_length:
self.spectrumPlotWidget.set_colors()
else:
self.spectrumPlotWidget.recalculate_persistence(
self.data_storage)
@QtCore.Slot()
def on_colorsButton_clicked(self):
dialog = QSpectrumAnalyzerColors(self)
if dialog.exec_():
settings = QtCore.QSettings()
self.spectrumPlotWidget.main_color = str_to_color(
settings.value("main_color", "255, 255, 0, 255"))
self.spectrumPlotWidget.peak_hold_max_color = str_to_color(
settings.value("peak_hold_max_color", "255, 0, 0, 255"))
self.spectrumPlotWidget.peak_hold_min_color = str_to_color(
settings.value("peak_hold_min_color", "0, 0, 255, 255"))
self.spectrumPlotWidget.average_color = str_to_color(
settings.value("average_color", "0, 255, 255, 255"))
self.spectrumPlotWidget.persistence_color = str_to_color(
settings.value("persistence_color", "0, 255, 0, 255"))
self.spectrumPlotWidget.set_colors()
@QtCore.Slot()
def on_action_Settings_triggered(self):
dialog = QSpectrumAnalyzerSettings(self)
if dialog.exec_():
self.setup_power_thread()
@QtCore.Slot()
def on_action_About_triggered(self):
QtWidgets.QMessageBox.information(
self, self.tr("About - QSpectrumAnalyzer"),
self.tr("QSpectrumAnalyzer {}").format(__version__))
@QtCore.Slot()
def on_action_Quit_triggered(self):
self.close()
def closeEvent(self, event):
"""Save settings when main window is closed"""
self.stop()
self.save_settings()