0004683: Mac Delete button (Backspace) is not recognized within Tools->Customize->Keyboard, only in combination with Fn button - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0004683	FreeCAD	Bug	public	2021-06-07 09:30	2022-01-24 15:39

Reporter	doia	Assigned To
Priority	low	Severity	tweak	Reproducibility	always
Status	closed	Resolution	fixed
Product Version	0.19
Target Version	0.20	Fixed in Version	0.20

Summary	0004683: Mac Delete button (Backspace) is not recognized within Tools->Customize->Keyboard, only in combination with Fn button
Description	The Mac Delete key (Backspace) is not recognized within the Tools->Customize->Keyboard screen to set the key as a shortcut to delete elements in the work benches. The key is only recognises in conjunction with pressing the Fn key on a Mac keyboard. The key is recognized in other screens or workbenches, as it can be used e.g. within the Spreadsheet WB or in any other WB where the user has to enter a value into a field. If pressed (without additionally pressing the Fn key), the character left of the cursor gets deleted. The Mac Delete key however can be set manually within the user preference configuration file under ~/Library/Preferences/FreeCAD/user.cfg. If adding the following lines in user.cfg: `<FCParamGroup Name="Shortcut"> <FCText Name="Std_Delete">Backspace</FCText> </FCParamGroup>` On new start up the Mac Delete key is read and interpreted by FC without additionally pressing the FN key.
Steps To Reproduce	- open Tools->Customize->Keyboard - select the Edit submenu under Category - select the &Delete command - try pressing the Mac Delete key (Backspace) under the "Press new shortcut" field - the field shows the value "None"
Tags	keyboard, macOS, shortcuts

FreeCAD Information	OS: macOS 10.16 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.24291 (Git) Build type: Release Branch: (HEAD detached at 0.19.2) Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac Python version: 3.8.8 Qt version: 5.12.9 Coin version: 4.0.0 OCC version: 7.4.0 Locale: C/Default (C)

doia 2021-06-07 09:32 reporter ~0015704	see https://forum.freecadweb.org/viewtopic.php?f=3&t=59054

chennes 2021-09-16 04:18 administrator ~0015934	"Backspace"/"Delete (Mac)" is hardcoded in AccelLineEdit.cpp to clear the contents of the line edit, which means it cannot be used alone as a shortcut except by manually setting it in your user.cfg file. The only way around this would be to eliminate that feature and making it so you have to have an external button click to clear the field. I don't see that as a viable path forward.

doia 2021-09-16 07:52 reporter ~0015936	Thanks for the info. I didn't know where to look for this in source. There is no file AccelLineEdit.cpp in source, but there is src/Gui/Widgets.cpp with class AccelLineEdit. The code in question would be in method AccelLineEdit::keyPressEvent in line 402-406: `case Qt::Key_Backspace: if (state == Qt::NoModifier) { keyPressedCount = 0; setText(noneStr); }` I think a solution would be to not just delete the string, if Key_Backspace is pressed, but instead check the current content of the string: - if string contains some characters -> delete - is string is empty -> set BACKSPACE as content I will try that and see if that works on Mac.

wmayer 2022-01-24 15:39 administrator ~0016268	https://github.com/FreeCAD/FreeCAD/commit/321c8b66ed6cf66022c813efdd187861e8867df7

Date Modified	Username	Field	Change
2021-06-07 09:30	doia	New Issue
2021-06-07 09:30	doia	Tag Attached: keyboard
2021-06-07 09:30	doia	Tag Attached: macOS
2021-06-07 09:30	doia	Tag Attached: shortcuts
2021-06-07 09:32	doia	Note Added: 0015704
2021-08-25 14:18	Kunda1	Status	new => confirmed
2021-08-25 14:18	Kunda1	Target Version	=> 0.20
2021-09-16 04:18	chennes	Note Added: 0015934
2021-09-16 07:52	doia	Note Added: 0015936
2022-01-24 15:39	wmayer	Status	confirmed => closed
2022-01-24 15:39	wmayer	Resolution	open => fixed
2022-01-24 15:39	wmayer	Fixed in Version	=> 0.20
2022-01-24 15:39	wmayer	Note Added: 0016268