# -*- coding: utf-8 -*- # vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4 ############################################################################### # OpenLP - Open Source Lyrics Projection # # --------------------------------------------------------------------------- # # Copyright (c) 2008-2016 OpenLP Developers # # --------------------------------------------------------------------------- # # This program 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; version 2 of the License. # # # # 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, write to the Free Software Foundation, Inc., 59 # # Temple Place, Suite 330, Boston, MA 02111-1307 USA # ############################################################################### """ The :mod:`core` module provides all core application functions All the core functions of the OpenLP application including the GUI, settings, logging and a plugin framework are contained within the openlp.core module. """ import os import sys import logging import argparse from traceback import format_exception import shutil import time from PyQt5 import QtCore, QtGui, QtWidgets from openlp.core.common import Registry, OpenLPMixin, AppLocation, Settings, UiStrings, check_directory_exists, \ is_macosx, is_win, translate from openlp.core.lib import ScreenList from openlp.core.resources import qInitResources from openlp.core.ui.mainwindow import MainWindow from openlp.core.ui.firsttimelanguageform import FirstTimeLanguageForm from openlp.core.ui.firsttimeform import FirstTimeForm from openlp.core.ui.exceptionform import ExceptionForm from openlp.core.ui import SplashScreen from openlp.core.utils import LanguageManager, VersionThread, get_application_version __all__ = ['OpenLP', 'main'] log = logging.getLogger() WIN_REPAIR_STYLESHEET = """ QMainWindow::separator { border: none; } QDockWidget::title { border: 1px solid palette(dark); padding-left: 5px; padding-top: 2px; margin: 1px 0; } QToolBar { border: none; margin: 0; padding: 0; } """ class OpenLP(OpenLPMixin, QtWidgets.QApplication): """ The core application class. This class inherits from Qt's QApplication class in order to provide the core of the application. """ args = [] def exec(self): """ Override exec method to allow the shared memory to be released on exit """ self.is_event_loop_active = True result = QtWidgets.QApplication.exec() self.shared_memory.detach() return result def run(self, args): """ Run the OpenLP application. :param args: Some Args """ self.is_event_loop_active = False # On Windows, the args passed into the constructor are ignored. Not very handy, so set the ones we want to use. # On Linux and FreeBSD, in order to set the WM_CLASS property for X11, we pass "OpenLP" in as a command line # argument. This interferes with files being passed in as command line arguments, so we remove it from the list. if 'OpenLP' in args: args.remove('OpenLP') self.args.extend(args) # Decide how many screens we have and their size screens = ScreenList.create(self.desktop()) # First time checks in settings has_run_wizard = Settings().value('core/has run wizard') if not has_run_wizard: ftw = FirstTimeForm() ftw.initialize(screens) if ftw.exec() == QtWidgets.QDialog.Accepted: Settings().setValue('core/has run wizard', True) elif ftw.was_cancelled: QtCore.QCoreApplication.exit() sys.exit() # Correct stylesheet bugs application_stylesheet = '' if not Settings().value('advanced/alternate rows'): base_color = self.palette().color(QtGui.QPalette.Active, QtGui.QPalette.Base) alternate_rows_repair_stylesheet = \ 'QTableWidget, QListWidget, QTreeWidget {alternate-background-color: ' + base_color.name() + ';}\n' application_stylesheet += alternate_rows_repair_stylesheet if is_win(): application_stylesheet += WIN_REPAIR_STYLESHEET if application_stylesheet: self.setStyleSheet(application_stylesheet) show_splash = Settings().value('core/show splash') if show_splash: self.splash = SplashScreen() self.splash.show() # make sure Qt really display the splash screen self.processEvents() # Check if OpenLP has been upgrade and if a backup of data should be created self.backup_on_upgrade(has_run_wizard) # start the main app window self.main_window = MainWindow() Registry().execute('bootstrap_initialise') Registry().execute('bootstrap_post_set_up') Registry().initialise = False self.main_window.show() if show_splash: # now kill the splashscreen self.splash.finish(self.main_window) log.debug('Splashscreen closed') # make sure Qt really display the splash screen self.processEvents() self.main_window.repaint() self.processEvents() if not has_run_wizard: self.main_window.first_time() update_check = Settings().value('core/update check') if update_check: version = VersionThread(self.main_window) version.start() self.main_window.is_display_blank() self.main_window.app_startup() return self.exec() def is_already_running(self): """ Look to see if OpenLP is already running and ask if a 2nd instance is to be started. """ self.shared_memory = QtCore.QSharedMemory('OpenLP') if self.shared_memory.attach(): status = QtWidgets.QMessageBox.critical(None, UiStrings().Error, UiStrings().OpenLPStart, QtWidgets.QMessageBox.StandardButtons(QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No)) if status == QtWidgets.QMessageBox.No: return True return False else: self.shared_memory.create(1) return False def hook_exception(self, exc_type, value, traceback): """ Add an exception hook so that any uncaught exceptions are displayed in this window rather than somewhere where users cannot see it and cannot report when we encounter these problems. :param exc_type: The class of exception. :param value: The actual exception object. :param traceback: A traceback object with the details of where the exception occurred. """ # We can't log.exception here because the last exception no longer exists, we're actually busy handling it. log.critical(''.join(format_exception(exc_type, value, traceback))) if not hasattr(self, 'exception_form'): self.exception_form = ExceptionForm() self.exception_form.exception_text_edit.setPlainText(''.join(format_exception(exc_type, value, traceback))) self.set_normal_cursor() self.exception_form.exec() def backup_on_upgrade(self, has_run_wizard): """ Check if OpenLP has been upgraded, and ask if a backup of data should be made :param has_run_wizard: OpenLP has been run before """ data_version = Settings().value('core/application version') openlp_version = get_application_version()['version'] # New installation, no need to create backup if not has_run_wizard: Settings().setValue('core/application version', openlp_version) # If data_version is different from the current version ask if we should backup the data folder elif data_version != openlp_version: if QtWidgets.QMessageBox.question(None, translate('OpenLP', 'Backup'), translate('OpenLP', 'OpenLP has been upgraded, do you want to create ' 'a backup of OpenLPs data folder?'), QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No, QtWidgets.QMessageBox.Yes) == QtWidgets.QMessageBox.Yes: # Create copy of data folder data_folder_path = AppLocation.get_data_path() timestamp = time.strftime("%Y%m%d-%H%M%S") data_folder_backup_path = data_folder_path + '-' + timestamp try: shutil.copytree(data_folder_path, data_folder_backup_path) except OSError: QtWidgets.QMessageBox.warning(None, translate('OpenLP', 'Backup'), translate('OpenLP', 'Backup of the data folder failed!')) return QtWidgets.QMessageBox.information(None, translate('OpenLP', 'Backup'), translate('OpenLP', 'A backup of the data folder has been created at %s') % data_folder_backup_path) # Update the version in the settings Settings().setValue('core/application version', openlp_version) def process_events(self): """ Wrapper to make ProcessEvents visible and named correctly """ self.processEvents() def set_busy_cursor(self): """ Sets the Busy Cursor for the Application """ self.setOverrideCursor(QtCore.Qt.BusyCursor) self.processEvents() def set_normal_cursor(self): """ Sets the Normal Cursor for the Application """ self.restoreOverrideCursor() self.processEvents() def event(self, event): """ Enables platform specific event handling i.e. direct file opening on OS X :param event: The event """ if event.type() == QtCore.QEvent.FileOpen: file_name = event.file() log.debug('Got open file event for %s!', file_name) self.args.insert(0, file_name) return True # Mac OS X should restore app window when user clicked on the OpenLP icon # in the Dock bar. However, OpenLP consists of multiple windows and this # does not work. This workaround fixes that. # The main OpenLP window is restored when it was previously minimized. elif event.type() == QtCore.QEvent.ApplicationActivate: if is_macosx() and hasattr(self, 'main_window'): if self.main_window.isMinimized(): # Copied from QWidget.setWindowState() docs on how to restore and activate a minimized window # while preserving its maximized and/or full-screen state. self.main_window.setWindowState(self.main_window.windowState() & ~QtCore.Qt.WindowMinimized | QtCore.Qt.WindowActive) return True return QtWidgets.QApplication.event(self, event) def parse_options(args): """ Parse the command line arguments :param args: list of command line arguments :return: a tuple of parsed options of type optparse.Value and a list of remaining argsZ """ # Set up command line options. parser = argparse.ArgumentParser(prog='openlp.py') parser.add_argument('-e', '--no-error-form', dest='no_error_form', action='store_true', help='Disable the error notification form.') parser.add_argument('-l', '--log-level', dest='loglevel', default='warning', metavar='LEVEL', help='Set logging to LEVEL level. Valid values are "debug", "info", "warning".') parser.add_argument('-p', '--portable', dest='portable', action='store_true', help='Specify if this should be run as a portable app, ' 'off a USB flash drive (not implemented).') parser.add_argument('-d', '--dev-version', dest='dev_version', action='store_true', help='Ignore the version file and pull the version directly from Bazaar') parser.add_argument('-s', '--style', dest='style', help='Set the Qt5 style (passed directly to Qt5).') parser.add_argument('rargs', nargs='?', default=[]) # Parse command line options and deal with them. Use args supplied pragmatically if possible. return parser.parse_args(args) if args else parser.parse_args() def set_up_logging(log_path): """ Setup our logging using log_path :param log_path: the path """ check_directory_exists(log_path, True) filename = os.path.join(log_path, 'openlp.log') logfile = logging.FileHandler(filename, 'w', encoding="UTF-8") logfile.setFormatter(logging.Formatter('%(asctime)s %(name)-55s %(levelname)-8s %(message)s')) log.addHandler(logfile) if log.isEnabledFor(logging.DEBUG): print('Logging to: %s' % filename) def main(args=None): """ The main function which parses command line options and then runs :param args: Some args """ args = parse_options(args) qt_args = [] if args and args.loglevel.lower() in ['d', 'debug']: log.setLevel(logging.DEBUG) elif args and args.loglevel.lower() in ['w', 'warning']: log.setLevel(logging.WARNING) else: log.setLevel(logging.INFO) if args and args.style: qt_args.extend(['-style', args.style]) # Throw the rest of the arguments at Qt, just in case. qt_args.extend(args.rargs) # Bug #1018855: Set the WM_CLASS property in X11 if not is_win() and not is_macosx(): qt_args.append('OpenLP') # Initialise the resources qInitResources() # Now create and actually run the application. application = OpenLP(qt_args) application.setOrganizationName('OpenLP') application.setOrganizationDomain('openlp.org') application.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True) if args and args.portable: application.setApplicationName('OpenLPPortable') Settings.setDefaultFormat(Settings.IniFormat) # Get location OpenLPPortable.ini application_path = AppLocation.get_directory(AppLocation.AppDir) set_up_logging(os.path.abspath(os.path.join(application_path, '..', '..', 'Other'))) log.info('Running portable') portable_settings_file = os.path.abspath(os.path.join(application_path, '..', '..', 'Data', 'OpenLP.ini')) # Make this our settings file log.info('INI file: %s', portable_settings_file) Settings.set_filename(portable_settings_file) portable_settings = Settings() # Set our data path data_path = os.path.abspath(os.path.join(application_path, '..', '..', 'Data',)) log.info('Data path: %s', data_path) # Point to our data path portable_settings.setValue('advanced/data path', data_path) portable_settings.setValue('advanced/is portable', True) portable_settings.sync() else: application.setApplicationName('OpenLP') set_up_logging(AppLocation.get_directory(AppLocation.CacheDir)) Registry.create() Registry().register('application', application) application.setApplicationVersion(get_application_version()['version']) # Instance check if application.is_already_running(): sys.exit() # Remove/convert obsolete settings. Settings().remove_obsolete_settings() # First time checks in settings if not Settings().value('core/has run wizard'): if not FirstTimeLanguageForm().exec(): # if cancel then stop processing sys.exit() # i18n Set Language language = LanguageManager.get_language() application_translator, default_translator = LanguageManager.get_translator(language) if not application_translator.isEmpty(): application.installTranslator(application_translator) if not default_translator.isEmpty(): application.installTranslator(default_translator) else: log.debug('Could not find default_translator.') if args and not args.no_error_form: sys.excepthook = application.hook_exception sys.exit(application.run(qt_args))