get_widget_font_family_and_size tries to access a named font that doesn't exist - macOS #595
Description
Is there an existing issue for this?
- I have searched the existing issues
Description of the bug
When I save the "Vehicle Component Editor Interface" step and try to continue to "Parameter File Editor and uploader interface", the app crash
Steps To Reproduce
- Run
ardupilot_methodic_configurator - Connect to the FC
- Enter the components of my vehicle and their properties
- Save it
- Crash
Expected behavior
After saving the components of my vehicle and their properties I should be able to access the Parameter File Editor and uploader interface.
Screenshots / Logs
2025-06-27 11:13:29,182 - INFO - Running version: 1.5.0 (git hash: b5a4148ccdfe2de8588f2b99cb7adc6762270ff9)
2025-06-27 11:13:29,895 - INFO - Already running latest version.
2025-06-27 11:13:30,281 - INFO - Available connection ports are:
2025-06-27 11:13:30,281 - INFO - /dev/cu.BLTH - n/a
2025-06-27 11:13:30,281 - INFO - /dev/cu.URT1 - n/a
2025-06-27 11:13:30,281 - INFO - /dev/cu.URT2 - n/a
2025-06-27 11:13:30,281 - INFO - /dev/cu.Bluetooth-Incoming-Port - n/a
2025-06-27 11:13:30,281 - INFO - /dev/cu.usbmodem141101 - CubeOrange+
2025-06-27 11:13:30,281 - INFO - /dev/cu.usbmodem141103 - CubeOrange+
2025-06-27 11:13:30,281 - INFO - tcp:127.0.0.1:5760 - tcp:127.0.0.1:5760
2025-06-27 11:13:30,281 - INFO - udp:127.0.0.1:14550 - udp:127.0.0.1:14550
2025-06-27 11:13:35,897 - INFO - Will connect to /dev/cu.usbmodem141101
2025-06-27 11:13:35,905 - INFO - Autopilot type ArduPilot - Plane/Copter/Rover/Sub/Tracker, https://ardupilot.org
2025-06-27 11:13:35,905 - INFO - Vehicle type: Quadrotor running ArduCopter firmware
2025-06-27 11:13:36,993 - INFO - Firmware Version: 4.5.7 official
2025-06-27 11:13:36,993 - INFO - Firmware first 8 hex bytes of the FC git hash: 2a3dc4b7
2025-06-27 11:13:36,993 - INFO - Firmware first 8 hex bytes of the ChibiOS git hash: 6a85082c
2025-06-27 11:13:36,993 - INFO - Flight Controller firmware type: CubeOrangePlus (1063)
2025-06-27 11:13:36,993 - INFO - Flight Controller HW / board version: 0
2025-06-27 11:13:36,993 - INFO - Flight Controller USB vendor ID: Hex/ProfiCNC,CubePilot
2025-06-27 11:13:36,993 - INFO - Flight Controller USB product ID: CubeOrange+
2025-06-27 11:13:37,079 - INFO - MAVFTP is supported by the /dev/cu.usbmodem141101 flight controller
2025-06-27 11:13:41,054 - INFO - Outputted 1056 parameters to complete.param
2025-06-27 11:13:41,056 - INFO - Outputted 1056 parameters to 00_default.param
2025-06-27 11:13:54,415 - INFO - Opening URL in browser: https://github.com/ArduPilot/ardupilot/blob/master/libraries/AP_HAL_ChibiOS/hwdef/CubeOrangePlus/README.md
2025-06-27 11:14:23,065 - INFO - Vehicle component data saved successfully.
2025-06-27 11:14:23,200 - WARNING - In file 'configuration_steps_ArduCopter.json': '18_notch_filter_setup.param' derived parameter 'INS_HNTCH_FREQ' could not be computed: 'fc_parameters' not found, is an FC connected?
2025-06-27 11:14:23,201 - WARNING - In file 'configuration_steps_ArduCopter.json': '20_throttle_controller.param' derived parameter 'PSC_ACCZ_I' could not be computed: 'fc_parameters' not found, is an FC connected?
2025-06-27 11:14:23,201 - WARNING - In file 'configuration_steps_ArduCopter.json': '20_throttle_controller.param' derived parameter 'PSC_ACCZ_P' could not be computed: 'fc_parameters' not found, is an FC connected?
2025-06-27 11:14:23,208 - WARNING - In file 'configuration_steps_ArduCopter.json': '34_autotune_yaw_setup.param' derived parameter 'ATC_RAT_YAW_FLTD' could not be computed: 'fc_parameters' not found, is an FC connected?
2025-06-27 11:14:23,217 - INFO - No last uploaded file found. Starting with the first file..
2025-06-27 11:14:23,220 - INFO - Created backup file autobackup_07.param
Traceback (most recent call last):
File "/Users/mael/code/maeldd/pro/MethodicConfigurator/ardupilot_methodic_configurator/.ardupilot_methodic_configurator_venv/bin/ardupilot_methodic_configurator", line 8, in <module>
sys.exit(main())
~~~~^^
File "/Users/mael/code/maeldd/pro/MethodicConfigurator/ardupilot_methodic_configurator/.ardupilot_methodic_configurator_venv/lib/python3.13/site-packages/ardupilot_methodic_configurator/__main__.py", line 242, in main
ParameterEditorWindow(start_file, flight_controller, local_filesystem)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/mael/code/maeldd/pro/MethodicConfigurator/ardupilot_methodic_configurator/.ardupilot_methodic_configurator_venv/lib/python3.13/site-packages/ardupilot_methodic_configurator/frontend_tkinter_parameter_editor.py", line 171, in __init__
self.__create_conf_widgets(__version__)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/Users/mael/code/maeldd/pro/MethodicConfigurator/ardupilot_methodic_configurator/.ardupilot_methodic_configurator_venv/lib/python3.13/site-packages/ardupilot_methodic_configurator/frontend_tkinter_parameter_editor.py", line 237, in __create_conf_widgets
font_family, _font_size = get_widget_font_family_and_size(file_selection_label)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "/Users/mael/code/maeldd/pro/MethodicConfigurator/ardupilot_methodic_configurator/.ardupilot_methodic_configurator_venv/lib/python3.13/site-packages/ardupilot_methodic_configurator/frontend_tkinter_rich_text.py", line 66, in get_widget_font_family_and_size
font_dict = tkFont.nametofont(font_name).config()
~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/tkinter/font.py", line 23, in nametofont
return Font(name=name, exists=True, root=root)
File "/usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/tkinter/font.py", line 87, in __init__
raise tkinter._tkinter.TclError(
"named font %s does not already exist" % (self.name,))
_tkinter.TclError: named font TkDefaultFont does not already existSoftware information
- Operating system: macOS 13.7.6
- arduPilot Methodic Configuration version: 1.5.0
- Python 3.11.12
Additional context
The issue seems to be in the get_widget_font_family_and_size function on line 65. It tries to access a named font that doesn't exist (the font is only available on Windows).