Music production session manager https://www.laborejo.org
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#! /usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Copyright 2022, Nils Hilbricht, Germany ( https://www.hilbricht.net )
This file is part of the Laborejo Software Suite ( https://www.laborejo.org )
This application is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import logging; logger = logging.getLogger(__name__); logger.info("import")
#Standard Library
#Third Party
from PyQt5 import QtCore, QtGui, QtWidgets
class WaitThread(QtCore.QThread):
def __init__(self, mainWindow, longRunningFunction):
self.longRunningFunction = longRunningFunction
self.mainWindow = mainWindow
self.finished = False
QtCore.QThread.__init__(self)
def __del__(self):
"""This gets called rather early in the objects life but is in the main thread!"""
self.wait()
#This is after run
self.finished = True
logger.info(f"Thread done {self.longRunningFunction}")
def run(self):
"""This is in the side-thread. We can't access qt widgets here"""
logger.info(f"Thread running {self.longRunningFunction}")
self.longRunningFunction()
self.finished = True
class WaitDialog(object):
"""An information text that closes itself once a task is done.
Executes and shows on construction"""
def __init__(self, mainWindow, text, longRunningFunction):
super().__init__()
self.text = text
self._errorText = None
logger.info(f"Starting blocking message for {longRunningFunction}")
self.mainWindow = mainWindow
self.mainWindow.ui.messageLabel.setText(text)
#self.mainWindow.ui.messageLabel.setWordWrap(True) #qt segfault! maybe something with threads... don't care. We truncate now, see below.
self.mainWindow.ui.mainPageSwitcher.setCurrentIndex(1) #1 is messageLabel 0 is the tab widget
self.mainWindow.ui.menubar.setEnabled(False) #TODO: this will leave the options in the TrayIcon menu available.. but well, who cares...
self.mainWindow.ui.waitDialogErrorButton.hide()
self.mainWindow.ui.waitDialogErrorButton.setEnabled(False)
self.mainWindow.ui.waitDialogErrorButton.clicked.connect(lambda: self.weAreDone()) #for some reason this does not trigger if we don't use lambda
self.buttonErrorText = QtCore.QCoreApplication.translate("WaitDialog", "Please confirm with a click on the button at the bottom.")
def wrap():
longRunningFunction(self.progressInfo)
wt = WaitThread(mainWindow, wrap)
#wt.finished.connect(self.threadDone) #does NOT trigger
wt.start()
while not wt.finished:
self.mainWindow.qtApp.processEvents()
if self._errorText: #progressInfo activated it
self.mainWindow.ui.messageLabel.setText(self._errorText + "\n" + self.buttonErrorText)
self.mainWindow.ui.waitDialogErrorButton.show()
self.mainWindow.ui.waitDialogErrorButton.setEnabled(True)
else:
self.weAreDone()
def weAreDone(self):
self.mainWindow.ui.menubar.setEnabled(True)
self.mainWindow.ui.waitDialogErrorButton.setEnabled(False)
self.mainWindow.ui.waitDialogErrorButton.hide()
self.mainWindow.ui.mainPageSwitcher.setCurrentIndex(0) #1 is messageLabel 0 is the tab widget
def progressInfo(self, updateText:str):
"""ProcessEvents is already called above in init"""
#updateText can be very long. They will destroy our complete layout if unchecked. we truncate to -80
self.mainWindow.ui.messageLabel.setText(self.text + "\n\n" + updateText[-80:])
if "ERROR!" in updateText:
self._errorText = updateText