def __init__(self):
QMainWindow.__init__(self)
self.logger = logging.getLogger(__name__)
# exception hook that logs to console, file, and display a message box
self.errorDialogOpened = False
sys.excepthook = self.excepthook
# Setup the user interface
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# Initialize the audio data ring buffer
self.audiobuffer = AudioBuffer()
# Initialize the audio backend
# signal containing new data from the audio callback thread, processed as numpy array
AudioBackend().new_data_available.connect(
self.audiobuffer.handle_new_data)
# this timer is used to update widgets that just need to display as fast as they can
self.display_timer = QtCore.QTimer()
self.display_timer.setInterval(
SMOOTH_DISPLAY_TIMER_PERIOD_MS) # constant timing
# slow timer
self.slow_timer = QtCore.QTimer()
self.slow_timer.setInterval(SLOW_TIMER_PERIOD_MS) # constant timing
self.about_dialog = About_Dialog(self, self.slow_timer)
self.settings_dialog = Settings_Dialog(self)
self.level_widget = Levels_Widget(self)
self.level_widget.set_buffer(self.audiobuffer)
self.audiobuffer.new_data_available.connect(
self.level_widget.handle_new_data)
self.hboxLayout = QHBoxLayout(self.ui.centralwidget)
self.hboxLayout.setContentsMargins(0, 0, 0, 0)
self.hboxLayout.addWidget(self.level_widget)
self.centralLayout = TileLayout()
self.centralLayout.setContentsMargins(0, 0, 0, 0)
self.hboxLayout.addLayout(self.centralLayout)
self.dockmanager = DockManager(self)
# timer ticks
self.display_timer.timeout.connect(self.dockmanager.canvasUpdate)
self.display_timer.timeout.connect(self.level_widget.canvasUpdate)
self.display_timer.timeout.connect(AudioBackend().fetchAudioData)
# toolbar clicks
self.ui.actionStart.triggered.connect(self.timer_toggle)
self.ui.actionSettings.triggered.connect(self.settings_called)
self.ui.actionAbout.triggered.connect(self.about_called)
self.ui.actionNew_dock.triggered.connect(self.dockmanager.new_dock)
# restore the settings and widgets geometries
self.restoreAppState()
# make sure the toolbar is shown
# in case it was closed by mistake (before it was made impossible)
self.ui.toolBar.setVisible(True)
# prevent from hiding or moving the toolbar
self.ui.toolBar.toggleViewAction().setVisible(True)
self.ui.toolBar.setMovable(False)
self.ui.toolBar.setFloatable(False)
# start timers
self.timer_toggle()
self.slow_timer.start()
self.logger.info("Init finished, entering the main loop")
class Friture(
QMainWindow, ):
def __init__(self):
QMainWindow.__init__(self)
self.logger = logging.getLogger(__name__)
# exception hook that logs to console, file, and display a message box
self.errorDialogOpened = False
sys.excepthook = self.excepthook
# Setup the user interface
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# Initialize the audio data ring buffer
self.audiobuffer = AudioBuffer()
# Initialize the audio backend
# signal containing new data from the audio callback thread, processed as numpy array
AudioBackend().new_data_available.connect(
self.audiobuffer.handle_new_data)
# this timer is used to update widgets that just need to display as fast as they can
self.display_timer = QtCore.QTimer()
self.display_timer.setInterval(
SMOOTH_DISPLAY_TIMER_PERIOD_MS) # constant timing
# slow timer
self.slow_timer = QtCore.QTimer()
self.slow_timer.setInterval(SLOW_TIMER_PERIOD_MS) # constant timing
self.about_dialog = About_Dialog(self, self.slow_timer)
self.settings_dialog = Settings_Dialog(self)
self.level_widget = Levels_Widget(self)
self.level_widget.set_buffer(self.audiobuffer)
self.audiobuffer.new_data_available.connect(
self.level_widget.handle_new_data)
self.hboxLayout = QHBoxLayout(self.ui.centralwidget)
self.hboxLayout.setContentsMargins(0, 0, 0, 0)
self.hboxLayout.addWidget(self.level_widget)
self.centralLayout = TileLayout()
self.centralLayout.setContentsMargins(0, 0, 0, 0)
self.hboxLayout.addLayout(self.centralLayout)
self.dockmanager = DockManager(self)
# timer ticks
self.display_timer.timeout.connect(self.dockmanager.canvasUpdate)
self.display_timer.timeout.connect(self.level_widget.canvasUpdate)
self.display_timer.timeout.connect(AudioBackend().fetchAudioData)
# toolbar clicks
self.ui.actionStart.triggered.connect(self.timer_toggle)
self.ui.actionSettings.triggered.connect(self.settings_called)
self.ui.actionAbout.triggered.connect(self.about_called)
self.ui.actionNew_dock.triggered.connect(self.dockmanager.new_dock)
# restore the settings and widgets geometries
self.restoreAppState()
# make sure the toolbar is shown
# in case it was closed by mistake (before it was made impossible)
self.ui.toolBar.setVisible(True)
# prevent from hiding or moving the toolbar
self.ui.toolBar.toggleViewAction().setVisible(True)
self.ui.toolBar.setMovable(False)
self.ui.toolBar.setFloatable(False)
# start timers
self.timer_toggle()
self.slow_timer.start()
self.logger.info("Init finished, entering the main loop")
# exception hook that logs to console, file, and display a message box
def excepthook(self, exception_type, exception_value, traceback_object):
gui_message = fileexcepthook(exception_type, exception_value,
traceback_object)
# we do not want to flood the user with message boxes when the error happens repeatedly on each timer event
if not self.errorDialogOpened:
self.errorDialogOpened = True
errorBox(gui_message)
self.errorDialogOpened = False
# slot
def settings_called(self):
self.settings_dialog.show()
# slot
def about_called(self):
self.about_dialog.show()
# event handler
def closeEvent(self, event):
AudioBackend().close()
self.saveAppState()
event.accept()
# method
def saveAppState(self):
settings = QtCore.QSettings("Friture", "Friture")
settings.beginGroup("Docks")
self.dockmanager.saveState(settings)
settings.endGroup()
settings.beginGroup("MainWindow")
windowGeometry = self.saveGeometry()
settings.setValue("windowGeometry", windowGeometry)
windowState = self.saveState()
settings.setValue("windowState", windowState)
settings.endGroup()
settings.beginGroup("AudioBackend")
self.settings_dialog.saveState(settings)
settings.endGroup()
# method
def migrateSettings(self):
settings = QtCore.QSettings("Friture", "Friture")
# 1. move the central widget to a normal dock
if settings.contains("CentralWidget/type"):
settings.beginGroup("CentralWidget")
centralWidgetKeys = settings.allKeys()
children = {
key: settings.value(key, type=QtCore.QVariant)
for key in centralWidgetKeys
}
settings.endGroup()
if not settings.contains("Docks/central/type"):
# write them to a new dock instead
for key, value in children.items():
settings.setValue("Docks/central/" + key, value)
# add the new dock name to dockNames
docknames = settings.value("Docks/dockNames", [])
docknames = ["central"] + docknames
settings.setValue("Docks/dockNames", docknames)
settings.remove("CentralWidget")
# 2. remove any level widget
if settings.contains("Docks/dockNames"):
docknames = settings.value("Docks/dockNames", [])
if docknames == None:
docknames = []
newDockNames = []
for dockname in docknames:
widgetType = settings.value("Docks/" + dockname + "/type",
0,
type=int)
if widgetType == 0:
settings.remove("Docks/" + dockname)
else:
newDockNames.append(dockname)
settings.setValue("Docks/dockNames", newDockNames)
# method
def restoreAppState(self):
self.migrateSettings()
settings = QtCore.QSettings("Friture", "Friture")
settings.beginGroup("Docks")
self.dockmanager.restoreState(settings)
settings.endGroup()
settings.beginGroup("MainWindow")
self.restoreGeometry(
settings.value("windowGeometry", type=QtCore.QByteArray))
self.restoreState(settings.value("windowState",
type=QtCore.QByteArray))
settings.endGroup()
settings.beginGroup("AudioBackend")
self.settings_dialog.restoreState(settings)
settings.endGroup()
# slot
def timer_toggle(self):
if self.display_timer.isActive():
self.logger.info("Timer stop")
self.display_timer.stop()
self.ui.actionStart.setText("Start")
AudioBackend().pause()
self.dockmanager.pause()
else:
self.logger.info("Timer start")
self.display_timer.start()
self.ui.actionStart.setText("Stop")
AudioBackend().restart()
self.dockmanager.restart()