85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
''' cpdctrl_gui/init.py '''
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from PyQt6.QtGui import QIcon
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from PyQt6.QtWidgets import QApplication
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from .ui.main_window import MainWindow
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from .utility.config import AppConfig
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from . import resources
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# This is necessary to set the taskbar icon
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import ctypes
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ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(u'n203.cpdctrl-gui.1')
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def run() -> int:
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"""
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Initializes the application and runs it.
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Returns:
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int: The exit status code.
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"""
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app: QApplication = QApplication(sys.argv)
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icon_path = resources.get_resource_path("icons/icon.png")
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app.setWindowIcon(QIcon(icon_path))
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AppConfig.initialize()
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window: MainWindow = MainWindow()
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window.show()
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exitcode = app.exec()
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print("Saving configuration")
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AppConfig.finalize()
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return sys.exit(exitcode)
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import sys
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import traceback
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import logging
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from PyQt6 import QtCore, QtWidgets
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# This is taken from:
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# https://timlehr.com/2018/01/python-exception-hooks-with-qt-message-box/index.html
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# basic logger functionality
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log = logging.getLogger(__name__)
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handler = logging.StreamHandler(stream=sys.stdout)
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log.addHandler(handler)
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def show_exception_box(log_msg):
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"""Checks if a QApplication instance is available and shows a messagebox with the exception message.
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If unavailable (non-console application), log an additional notice.
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"""
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if QtWidgets.QApplication.instance() is not None:
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errorbox = QtWidgets.QMessageBox()
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errorbox.setText("Oops. An unexpected error occured:\n{0}".format(log_msg))
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errorbox.exec()
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else:
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log.debug("No QApplication instance available.")
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class UncaughtHook(QtCore.QObject):
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_exception_caught = QtCore.pyqtSignal(object)
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def __init__(self, *args, **kwargs):
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super(UncaughtHook, self).__init__(*args, **kwargs)
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# this registers the exception_hook() function as hook with the Python interpreter
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sys.excepthook = self.exception_hook
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# connect signal to execute the message box function always on main thread
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self._exception_caught.connect(show_exception_box)
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def exception_hook(self, exc_type, exc_value, exc_traceback):
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"""Function handling uncaught exceptions.
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It is triggered each time an uncaught exception occurs.
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"""
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if issubclass(exc_type, KeyboardInterrupt):
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# ignore keyboard interrupt to support console applications
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sys.__excepthook__(exc_type, exc_value, exc_traceback)
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else:
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exc_info = (exc_type, exc_value, exc_traceback)
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log_msg = '\n'.join([''.join(traceback.format_tb(exc_traceback)),
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'{0}: {1}'.format(exc_type.__name__, exc_value)])
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log.critical("Uncaught exception:\n {0}".format(log_msg), exc_info=exc_info)
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# trigger message box show
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self._exception_caught.emit(log_msg)
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# create a global instance of our class to register the hook
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qt_exception_hook = UncaughtHook()
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