def __init__(self, model, ui, parent=None):
QWizardPage.__init__(self, parent)
self.ui = ui
self.model = model
# this one is a little difference since it has background work logic
self.workerThread = QThread()
self.workerThread.start()
self.driver = SimpleDriver()
self.driver.moveToThread(self.workerThread)
self.isDone = False
QObject.connect(
self,
QtCore.SIGNAL("startProcessing"),
self.driver.process,
Qt.QueuedConnection)
QObject.connect(
self.driver,
QtCore.SIGNAL("progress"),
self.updateProgress,
Qt.QueuedConnection)
QObject.connect(
self.driver,
QtCore.SIGNAL("done"),
self.workerDone,
Qt.QueuedConnection)
import os
driver = None
def sigterm_handler(_signo, _stack_frame):
print('Someone killed me')
global driver
if driver is not None and isinstance(driver, SimpleDriver):
driver.saveResults()
sys.exit(0)
signal.signal(signal.SIGINT, sigterm_handler)
signal.signal(signal.SIGTERM, sigterm_handler)
if __name__ == '__main__':
driver = SimpleDriver()
try:
main(driver)
except Exception as exc:
traceback.print_exc()
raise
class WorkingPage(QWizardPage):
def __init__(self, model, ui, parent=None):
QWizardPage.__init__(self, parent)
self.ui = ui
self.model = model
# this one is a little difference since it has background work logic
self.workerThread = QThread()
self.workerThread.start()
self.driver = SimpleDriver()
self.driver.moveToThread(self.workerThread)
self.isDone = False
QObject.connect(
self,
QtCore.SIGNAL("startProcessing"),
self.driver.process,
Qt.QueuedConnection)
QObject.connect(
self.driver,
QtCore.SIGNAL("progress"),
self.updateProgress,
Qt.QueuedConnection)
QObject.connect(
self.driver,
QtCore.SIGNAL("done"),
self.workerDone,
Qt.QueuedConnection)
def workerDone(self, args):
msg, finished_successfully = args
print 'worker finished: ' + str(finished_successfully) + ' ' + msg
if finished_successfully:
self.isDone = True
self.ui.progressBar.setValue(100)
self.ui.workingLabel.setText(msg)
else:
self.isDone = False
msgBox = QtGui.QMessageBox(self)
msgBox.setText(msg)
msgBox.exec_()
def updateProgress(self, args):
msg, frac = args
self.ui.progressBar.setValue(int(frac * 100))
self.ui.workingLabel.setText(msg)
def postSetup(self):
pass
def initializePage(self):
self.isDone = False
self.ui.workingLabel.setText('')
self.ui.progressBar.setValue(0)
print 'worker starting'
self.driver.startWorking(lambda :
self.emit(QtCore.SIGNAL("startProcessing"), self.model))
def validatePage(self):
return self.isDone
# called when the use hits back
def cleanupPage(self):
print 'cleaning up '
# this blocks until the driver stops, but is thread safe
self.driver.stopWorking()