import sys from PyQt5.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, QLabel, QLineEdit, QPushButton, QDateEdit, QTableWidget, QTableWidgetItem, QHeaderView, QDialog, QFormLayout, QComboBox, QMessageBox, QSpinBox, QAction, QFileDialog, QMenuBar, QTextEdit, QAbstractItemView, QToolButton) from PyQt5.QtWidgets import QStyle from PyQt5.QtCore import Qt, QDate, QLocale from PyQt5.QtGui import QFont, QFontDatabase from datetime import datetime, timedelta from dateutil.relativedelta import relativedelta from calendar_manager import CalendarManager from date_calculator import DateCalculator from prediction_controller import PredictionController from event_type_handler import EventTypeHandler from date_service import DateService from config import EventConfig from prediction_report_service import PredictionReportService class EventDialog(QDialog): def __init__(self, entry=None, parent=None): super().__init__(parent) self.entry = entry self.dateformat = EventConfig.DATE_FORMAT # Set title based on mode self.setWindowTitle("Neuer Eintrag" if not entry else "Eintrag editieren") self.init_ui() def init_ui(self): layout = QFormLayout() # Apply Arial font font = QFont("Arial", 12) self.setFont(font) self.setStyleSheet( "QDialog { background: #ffffff; }" " QLabel { color: #333; }" " QLineEdit, QDateEdit, QComboBox, QTextEdit, QSpinBox {" " background: #fafbfe; color: #333; border: 1px solid #e1e4ee;" " border-radius: 6px; padding: 6px; }" " QDateEdit::drop-down, QComboBox::drop-down { border: none; }" " QPushButton { background: #2f6feb; color: #fff; border: none;" " border-radius: 6px; padding: 8px 12px; }" " QPushButton:hover { background: #316de0; }" " QPushButton:pressed { background: #2a5fcc; }" ) # Start date selector self.start_date = QDateEdit() self.start_date.setCalendarPopup(True) self.start_date.setFont(font) self.start_date.setDisplayFormat(self.dateformat) # Set initial date based on mode if self.entry: entry_start = QDate(self.entry.start_date.year, self.entry.start_date.month, self.entry.start_date.day) self.start_date.setDate(entry_start) else: self.start_date.setDate(QDate.currentDate()) # Connect start date change to validate end date self.start_date.dateChanged.connect(self.validate_end_date) layout.addRow("Startdatum:", self.start_date) # End date selector self.end_date = QDateEdit() self.end_date.setCalendarPopup(True) self.end_date.setFont(font) self.end_date.setDisplayFormat(self.dateformat) # Set initial date based on mode if self.entry: entry_end = QDate(self.entry.end_date.year, self.entry.end_date.month, self.entry.end_date.day) self.end_date.setDate(entry_end) else: self.end_date.setDate(QDate.currentDate().addDays(1)) layout.addRow("Enddatum:", self.end_date) # Keyword selector self.keyword = QComboBox() self.keyword.setFont(font) self.keyword.addItems(EventConfig.KEYWORDS) # Set initial keyword based on mode if self.entry and self.entry.keyword in EventConfig.KEYWORDS: current_index = EventConfig.KEYWORDS.index(self.entry.keyword) self.keyword.setCurrentIndex(current_index) self.keyword.currentTextChanged.connect(self.on_keyword_changed) layout.addRow("Art:", self.keyword) # Commentary input self.commentary_input = QTextEdit() self.commentary_input.setFont(font) self.commentary_input.setFixedHeight(80) if self.entry and hasattr(self.entry, 'commentary') and self.entry.commentary: self.commentary_input.setPlainText(self.entry.commentary) layout.addRow("Kommentar:", self.commentary_input) # Store layout for later access self.layout = layout self.end_date_row = 1 # Index of end date row in the form layout # Buttons button_layout = QHBoxLayout() self.save_button = QPushButton("Speichern") self.save_button.setFont(font) self.save_button.setIcon(self.style().standardIcon(QStyle.SP_DialogApplyButton)) self.save_button.clicked.connect(self.accept) self.cancel_button = QPushButton("Abbrechen") self.cancel_button.setFont(font) self.cancel_button.setIcon(self.style().standardIcon(QStyle.SP_DialogCancelButton)) self.cancel_button.clicked.connect(self.reject) button_layout.addWidget(self.save_button) button_layout.addWidget(self.cancel_button) layout.addRow("", button_layout) self.setLayout(layout) # Connect end date change to validate start date (keep range consistent both ways) self.end_date.dateChanged.connect(self.validate_start_date) # Handle initial keyword selection self.on_keyword_changed(self.keyword.currentText()) def on_keyword_changed(self, keyword): """Handle visibility of the end_date field based on keyword""" # Get the widgets from the form layout end_date_label = self.layout.itemAt(self.end_date_row, QFormLayout.LabelRole).widget() end_date_field = self.layout.itemAt(self.end_date_row, QFormLayout.FieldRole).widget() if EventTypeHandler.should_hide_end_date_input(keyword): # Hide end date field for EZ pauschals since they have fixed duration end_date_label.setVisible(False) end_date_field.setVisible(False) # Update end date automatically if changing to EZ pauschal start_dt = self.start_date.date().toPyDate() end_dt = EventTypeHandler.get_duration_for_type(keyword, start_dt) self.end_date.setDate(QDate(end_dt.year, end_dt.month, end_dt.day)) else: # Show end date field for other event types end_date_label.setVisible(True) end_date_field.setVisible(True) def validate_end_date(self): """Ensure end date is not before start date""" if self.end_date.date() < self.start_date.date(): self.end_date.setDate(self.start_date.date()) def validate_start_date(self): """Ensure start date is not after end date when end changes""" if self.start_date.date() > self.end_date.date(): self.start_date.setDate(self.end_date.date()) def get_data(self): start_date = DateService.format_date_for_iso(self.start_date.date()) keyword = self.keyword.currentText() commentary = self.commentary_input.toPlainText().strip() if EventTypeHandler.should_hide_end_date_input(keyword): # For EZ pauschals, calculate end date automatically start_dt = DateService.parse_date_from_string(start_date) end_dt = EventTypeHandler.get_duration_for_type(keyword, start_dt) end_date = DateService.format_date_for_iso(end_dt) else: end_date = DateService.format_date_for_iso(self.end_date.date()) return start_date, end_date, keyword, commentary class CalendarManagerGUI(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Ausfallzeitenrechner") self.setMinimumSize(800, 600) # Set application font self.app_font = QFont("Arial", 12) QApplication.setFont(self.app_font) # Get system locale for consistent date formatting self.locale = QLocale.system() self.dateformat = EventConfig.DATE_FORMAT # Initialize backend components self.calendar_manager = CalendarManager() self.date_calculator = DateCalculator() self.prediction_controller = PredictionController( self.calendar_manager, self.date_calculator ) self.init_ui() self.create_menus() def create_menus(self): # Create menu bar menubar = self.menuBar() menubar.setFont(self.app_font) menubar.setStyleSheet( "QMenuBar { background: #ffffff; color: #333; }" " QMenuBar::item:selected { background: #f0f3fa; }" " QMenu { background: #ffffff; color: #333; border: 1px solid #e1e4ee; }" " QMenu::item:selected { background: #e6f0ff; }" ) # File menu file_menu = menubar.addMenu('Start') # Load action load_action = QAction('Laden', self) load_action.setShortcut('Ctrl+L') load_action.setIcon(self.style().standardIcon(QStyle.SP_DialogOpenButton)) load_action.triggered.connect(self.load_file) file_menu.addAction(load_action) # Save action save_action = QAction('Speichern', self) save_action.setShortcut('Ctrl+S') save_action.setIcon(self.style().standardIcon(QStyle.SP_DialogSaveButton)) save_action.triggered.connect(self.save_file) file_menu.addAction(save_action) # Export PDF action export_pdf_action = QAction('Als PDF exportieren', self) export_pdf_action.setShortcut('Ctrl+E') # Fallback icon; SP_DialogPrintButton may not exist in some Qt styles export_pdf_action.setIcon(self.style().standardIcon(QStyle.SP_FileIcon)) export_pdf_action.triggered.connect(self.export_pdf) file_menu.addAction(export_pdf_action) # Note: Saving/Loading now operate on complete prediction state # Clear action clear_action = QAction('Einträge löschen', self) clear_action.setShortcut('Ctrl+N') clear_action.setIcon(self.style().standardIcon(QStyle.SP_DialogResetButton)) clear_action.triggered.connect(self.clear_entries) file_menu.addAction(clear_action) # Exit action exit_action = QAction('Beenden', self) exit_action.setShortcut('Ctrl+Q') exit_action.setIcon(self.style().standardIcon(QStyle.SP_DialogCloseButton)) exit_action.triggered.connect(self.close) file_menu.addAction(exit_action) def init_ui(self): central_widget = QWidget() main_layout = QVBoxLayout() main_layout.setContentsMargins(16, 16, 16, 16) main_layout.setSpacing(14) # Global light style for consistency self.setStyleSheet( "QMainWindow { background: #ffffff; }" " QLabel { color: #333; }" " QLineEdit, QDateEdit, QComboBox, QTextEdit, QSpinBox {" " background: #fafbfe; color: #333; border: 1px solid #e1e4ee;" " border-radius: 6px; padding: 6px; }" " QDateEdit::drop-down, QComboBox::drop-down { border: none; }" " QPushButton { background: #2f6feb; color: #fff; border: none;" " border-radius: 6px; padding: 8px 12px; }" " QPushButton:hover { background: #316de0; }" " QPushButton:pressed { background: #2a5fcc; }" " QToolButton { border: none; }" ) top_layout = QHBoxLayout() top_layout.setSpacing(18) # Launch date input launch_date_layout = QVBoxLayout() launch_date_label = QLabel("Promotionsdatum:") launch_date_label.setFont(self.app_font) self.launch_date_edit = QDateEdit() self.launch_date_edit.setFont(self.app_font) self.launch_date_edit.setCalendarPopup(True) # Enable calendar popup self.launch_date_edit.setDate(QDate.currentDate()) self.launch_date_edit.setDisplayFormat(self.dateformat) self.launch_date_edit.dateChanged.connect(self.update_prediction) # Auto-update on change launch_date_layout.addWidget(launch_date_label) launch_date_layout.addWidget(self.launch_date_edit) top_layout.addLayout(launch_date_layout) # Duration input duration_layout = QVBoxLayout() duration_label = QLabel("Bewerbungszeitraum (Jahre):") duration_label.setFont(self.app_font) self.duration_spin = QSpinBox() self.duration_spin.setFont(self.app_font) self.duration_spin.setRange(1, 99) self.duration_spin.setValue(1) self.duration_spin.valueChanged.connect(self.update_prediction) # Auto-update on change duration_layout.addWidget(duration_label) duration_layout.addWidget(self.duration_spin) top_layout.addLayout(duration_layout) # Prediction result prediction_result_layout = QVBoxLayout() prediction_result_label = QLabel("Bewerbungsfrist:") prediction_result_label.setFont(self.app_font) self.prediction_result = QDateEdit() self.prediction_result.setFont(self.app_font) self.prediction_result.setReadOnly(True) self.prediction_result.setButtonSymbols(QDateEdit.ButtonSymbols.NoButtons) self.prediction_result.setDisplayFormat(self.dateformat) self.prediction_result.setStyleSheet( "QDateEdit { background: #f5faf5; border: 1px solid #cfe8cf; color: #1e4620; }" ) prediction_result_layout.addWidget(prediction_result_label) prediction_result_layout.addWidget(self.prediction_result) top_layout.addLayout(prediction_result_layout) main_layout.addLayout(top_layout) # Events section events_layout = QVBoxLayout() events_title = QLabel("

Ausfallzeiten

") events_title.setFont(self.app_font) events_layout.addWidget(events_title) # Add event button (modern with icon) add_event_button = QPushButton("Eintrag hinzufügen") add_event_button.setFont(self.app_font) add_event_button.setIcon(self.style().standardIcon(QStyle.SP_FileDialogNewFolder)) add_event_button.setStyleSheet("QPushButton { border-radius: 6px; padding: 6px 10px; }") add_event_button.clicked.connect(self.add_event) events_layout.addWidget(add_event_button) # Events table self.events_table = QTableWidget() self.events_table.setFont(self.app_font) self.events_table.setColumnCount(7) # ID (hidden), Start, End, Keyword, RelevantTime, Commentary, Actions self.events_table.setHorizontalHeaderLabels(["ID", "Anfangsdatum", "Enddatum", "Art", "Anger. Zeit", "Kommentar", "Aktionen"]) self.events_table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch) self.events_table.horizontalHeader().setFont(self.app_font) self.events_table.setColumnHidden(0, True) # Hide ID column # Table visual tweaks for a modern look self.events_table.setAlternatingRowColors(True) self.events_table.setSelectionBehavior(QAbstractItemView.SelectRows) self.events_table.setSelectionMode(QAbstractItemView.SingleSelection) self.events_table.setStyleSheet( "QHeaderView::section { background: #f5f7fb; color: #333; border: none;" " border-bottom: 1px solid #e6e8ef; padding: 8px; }" " QTableWidget { gridline-color: #e6e8ef; }" " QTableView::item { padding: 6px; color: #333; }" " QTableView::item:selected { background: #e6f0ff; color: #333; }" " QTableView::item:hover { background: #f4f7ff; color: #333; }" ) # Wrap long text and auto-resize rows so comments are readable self.events_table.setWordWrap(True) self.events_table.verticalHeader().setSectionResizeMode(QHeaderView.ResizeToContents) # Enable inline editing on double click / Enter; keep computed column read-only in population step self._suppress_item_changed = False self.events_table.setEditTriggers( QAbstractItemView.DoubleClicked | QAbstractItemView.SelectedClicked | QAbstractItemView.EditKeyPressed ) self.events_table.itemChanged.connect(self.on_events_item_changed) events_layout.addWidget(self.events_table) main_layout.addLayout(events_layout) # Set main layout central_widget.setLayout(main_layout) self.setCentralWidget(central_widget) # Load initial data self.update_events_table() self.update_prediction() # Calculate initial prediction def update_prediction(self): """Update prediction whenever needed""" try: launch_date = self.launch_date_edit.date().toString("yyyy-MM-dd") duration_years = self.duration_spin.value() self.prediction_controller.make_prediction(launch_date, duration_years) prediction_date = self.prediction_controller.get_prediction() if prediction_date: self.prediction_result.setDate(prediction_date) # Update table to show corrected dates self.update_events_table() except Exception as e: self.prediction_result.setText("Error in calculation") print(f"Error calculating prediction: {str(e)}") def add_event(self): dialog = EventDialog(parent=self) if dialog.exec_(): start_date, end_date, keyword, commentary = dialog.get_data() try: # Validate data before adding errors = self.calendar_manager.validate_entry_data(start_date, end_date, keyword) if errors: QMessageBox.warning(self, "Validation Error", "\n".join(errors)) return self.calendar_manager.add_entry(start_date, end_date, keyword, commentary) self.update_events_table() self.update_prediction() # Auto-update prediction except Exception as e: QMessageBox.critical(self, "Error", f"Error adding event: {str(e)}") def modify_event(self, event_id): entry = self.calendar_manager.get_entry_by_id(event_id) if entry: dialog = EventDialog(entry=entry, parent=self) if dialog.exec_(): start_date, end_date, keyword, commentary = dialog.get_data() try: # Validate data before modifying errors = self.calendar_manager.validate_entry_data(start_date, end_date, keyword) if errors: QMessageBox.warning(self, "Validation Error", "\n".join(errors)) return self.calendar_manager.modify_entry(event_id, start_date, end_date, keyword, commentary) self.update_events_table() self.update_prediction() # Auto-update prediction except Exception as e: QMessageBox.critical(self, "Error", f"Error modifying event: {str(e)}") def delete_event(self, event_id): reply = QMessageBox.question(self, "Eintrag löschen", "Wollen Sie diesen Eintrag löschen?", QMessageBox.Yes | QMessageBox.No) if reply == QMessageBox.Yes: try: self.calendar_manager.delete_entry(event_id) self.update_events_table() self.update_prediction() # Auto-update prediction except Exception as e: QMessageBox.critical(self, "Error", f"Error deleting event: {str(e)}") def update_events_table(self): # Clear table self._suppress_item_changed = True try: self.events_table.setRowCount(0) # Add entries to table entries = self.calendar_manager.list_entries() for i, entry in enumerate(entries): self.events_table.insertRow(i) # Set item data self.events_table.setItem(i, 0, QTableWidgetItem(entry.id)) # Format dates using unified display format start_date_text = DateService.format_date_for_display(entry.start_date, self.dateformat) end_date_text = DateService.format_date_for_display(entry.end_date, self.dateformat) self.events_table.setItem(i, 1, QTableWidgetItem(start_date_text)) self.events_table.setItem(i, 2, QTableWidgetItem(end_date_text)) # Keyword as dropdown (combobox) for safer selection keyword_combo = QComboBox() keyword_combo.setFont(self.app_font) keyword_combo.addItems(EventConfig.KEYWORDS) if entry.keyword in EventConfig.KEYWORDS: keyword_combo.setCurrentIndex(EventConfig.KEYWORDS.index(entry.keyword)) keyword_combo.currentTextChanged.connect(lambda new_kw, eid=entry.id: self.on_keyword_changed_in_table(eid, new_kw)) self.events_table.setCellWidget(i, 3, keyword_combo) # Relevant accounted time from stored time_period relevant_text = getattr(entry, 'time_period', "") or "" relevant_item = QTableWidgetItem(relevant_text) # Make computed column read-only relevant_item.setFlags(relevant_item.flags() & ~Qt.ItemIsEditable) self.events_table.setItem(i, 4, relevant_item) # Commentary commentary_text = getattr(entry, 'commentary', "") or "" commentary_item = QTableWidgetItem(commentary_text) self.events_table.setItem(i, 5, commentary_item) # Action buttons actions_widget = QWidget() actions_layout = QHBoxLayout() actions_layout.setContentsMargins(0, 0, 0, 0) # Modern icon-only tool buttons modify_button = QToolButton() modify_button.setAutoRaise(True) modify_button.setIcon(self.style().standardIcon(QStyle.SP_FileDialogDetailedView)) modify_button.setToolTip("Eintrag bearbeiten") modify_button.setFixedSize(28, 24) delete_button = QToolButton() delete_button.setAutoRaise(True) delete_button.setIcon(self.style().standardIcon(QStyle.SP_TrashIcon)) delete_button.setToolTip("Eintrag löschen") delete_button.setFixedSize(28, 24) # Use lambda with default argument to capture the correct event_id modify_button.clicked.connect(lambda checked, eid=entry.id: self.modify_event(eid)) delete_button.clicked.connect(lambda checked, eid=entry.id: self.delete_event(eid)) actions_layout.addWidget(modify_button) actions_layout.addWidget(delete_button) actions_widget.setLayout(actions_layout) self.events_table.setCellWidget(i, 6, actions_widget) # Adjust row heights after population to show wrapped text self.events_table.resizeRowsToContents() finally: self._suppress_item_changed = False def on_events_item_changed(self, item): # Avoid reacting to programmatic changes if self._suppress_item_changed: return row = item.row() col = item.column() # Ignore non-editable/computed/action columns if col in (0, 4, 6): return # Retrieve entry id id_item = self.events_table.item(row, 0) if id_item is None: return event_id = id_item.text() # Collect current row values start_text = self.events_table.item(row, 1).text() if self.events_table.item(row, 1) else "" end_text = self.events_table.item(row, 2).text() if self.events_table.item(row, 2) else "" # Keyword comes from the combobox cell widget keyword_widget = self.events_table.cellWidget(row, 3) keyword_text = keyword_widget.currentText() if isinstance(keyword_widget, QComboBox) else (self.events_table.item(row, 3).text() if self.events_table.item(row, 3) else "") commentary_text = self.events_table.item(row, 5).text() if self.events_table.item(row, 5) else "" # Normalize to ISO strings for backend try: start_iso = DateService.format_date_for_iso(DateService.parse_date_from_string(start_text)) if start_text else None end_iso = DateService.format_date_for_iso(DateService.parse_date_from_string(end_text)) if end_text else None except Exception as e: QMessageBox.warning(self, "Ungültiges Datum", f"Bitte ein gültiges Datum eingeben.\nFehler: {str(e)}") # Revert table to backend values self.update_events_table() return # Validate before applying errors = [] if start_iso and end_iso: errors = self.calendar_manager.validate_entry_data(start_iso, end_iso, keyword_text) if errors: QMessageBox.warning(self, "Validierungsfehler", "\n".join(errors)) self.update_events_table() return # Apply modification modified = self.calendar_manager.modify_entry( event_id, start_date=start_iso if start_iso else None, end_date=end_iso if end_iso else None, keyword=keyword_text if keyword_text else None, commentary=commentary_text if commentary_text is not None else None, ) if modified is None: QMessageBox.critical(self, "Fehler", "Eintrag konnte nicht aktualisiert werden.") self.update_events_table() return # Refresh to reflect normalized display and recomputed values self.update_events_table() self.update_prediction() def on_keyword_changed_in_table(self, event_id, new_keyword): # Validate using current start/end from the entry entry = self.calendar_manager.get_entry_by_id(event_id) if not entry: return start_iso = DateService.format_date_for_iso(entry.start_date) end_iso = DateService.format_date_for_iso(entry.end_date) errors = self.calendar_manager.validate_entry_data(start_iso, end_iso, new_keyword) if errors: QMessageBox.warning(self, "Validierungsfehler", "\n".join(errors)) # Re-render to revert combo to valid value self.update_events_table() return modified = self.calendar_manager.modify_entry(event_id, keyword=new_keyword) if modified is None: QMessageBox.critical(self, "Fehler", "Eintrag konnte nicht aktualisiert werden.") self.update_events_table() return self.update_events_table() self.update_prediction() def save_file(self): """Save the complete prediction state to a .prediction.json file""" file_path, _ = QFileDialog.getSaveFileName( self, "Zustand speichern", "", "Prediction State (*.prediction.json)" ) if not file_path: return try: if self.prediction_controller.save_complete_state(file_path): target = file_path if file_path.endswith('.prediction.json') else file_path + '.prediction.json' QMessageBox.information(self, "Speichern erfolgreich", f"Komplettzustand gespeichert in {target}") else: QMessageBox.critical(self, "Error", "Speichern des Komplettzustands fehlgeschlagen") except Exception as e: QMessageBox.critical(self, "Error", f"Fehler beim Speichern des Komplettzustands: {str(e)}") def load_file(self): """Load the complete prediction state from a .prediction.json file""" file_path, _ = QFileDialog.getOpenFileName( self, "Zustand laden", "", "Prediction State (*.prediction.json)" ) if not file_path: return try: success = self.prediction_controller.load_complete_state(file_path) if success: # Reflect restored parameters into UI launch_dt = self.prediction_controller.get_launch_date() duration = self.prediction_controller.get_duration() if launch_dt: self.launch_date_edit.setDate(launch_dt) if duration is not None and hasattr(duration, 'years'): self.duration_spin.setValue(max(1, duration.years)) # Update views self.update_events_table() prediction_date = self.prediction_controller.get_prediction() if prediction_date: self.prediction_result.setDate(prediction_date) QMessageBox.information(self, "Laden erfolgreich", f"Komplettzustand von {file_path} geladen") else: QMessageBox.warning(self, "Warnung", "Komplettzustand konnte nicht geladen werden") except Exception as e: QMessageBox.critical(self, "Error", f"Fehler beim Laden des Komplettzustands: {str(e)}") def export_pdf(self): """Export a formatted report to PDF including metadata and full table.""" out_path, _ = QFileDialog.getSaveFileName( self, "PDF exportieren", "", "PDF (*.pdf)" ) if not out_path: return success = PredictionReportService.export_pdf( self.calendar_manager, self.prediction_controller, out_path, self.dateformat, ) if success: if not out_path.lower().endswith('.pdf'): out_path = out_path + '.pdf' QMessageBox.information(self, "Export erfolgreich", f"PDF exportiert nach {out_path}") else: QMessageBox.critical(self, "Fehler", "PDF-Export fehlgeschlagen.") def clear_entries(self): """Clear all calendar entries""" reply = QMessageBox.question(self, "Einträge löschen", "Alle Einträge löschen?", QMessageBox.Yes | QMessageBox.No) if reply == QMessageBox.Yes: try: self.calendar_manager.clear_entries() self.update_events_table() self.update_prediction() # Auto-update prediction QMessageBox.information(self, "Erfolg", "Alle Einträge gelöscht!") except Exception as e: QMessageBox.critical(self, "Error", f"Failed to clear calendar: {str(e)}") def main(): app = QApplication(sys.argv) app.setStyle('Fusion') # Ensure Arial is available QFontDatabase.addApplicationFont("Arial") window = CalendarManagerGUI() window.show() sys.exit(app.exec_()) if __name__ == "__main__": main()