New Language appear in the drop down in preferences but doesn't work

[AbdElhalim12]

Is there an existing issue for this problem?

• I have searched the existing issues

OrcaSlicer Version

2.2.0

Operating System (OS)

Windows

OS Version

windows 11

Additional system information

No response

Printer

all

How to reproduce

create new language and add the mo file to i18n folder

Actual results

I followed the localization wiki page to create a new language that doesn't exist in orcaslicer, then I modified the preferences.cpp file to add add it. The Language now appears in the dropdown in preferences window but when I choose it the orcaslicer needs to be restarted as normal but after restart the language still English.
I tried to move the mo file to the en folder to test whether it works or not, and it appears correctly.

Expected results

new language should take over the UI

Project file & Debug log uploads

Checklist of files to include

• Log file
• Project file

Anything else?

No response

[Noisyfox]

You could try raising a draft PR so I could take a better look at what you've got so far.

[AbdElhalim12]

#6815

[Noisyfox]

The reason it doesn't work is this:

OrcaSlicer/src/slic3r/GUI/GUI_App.cpp

Lines 5091 to 5094 in 587e839

	if (language_info != nullptr && language_info->LayoutDirection == wxLayout_RightToLeft) {
	BOOST_LOG_TRIVIAL(trace) << boost::format("The following language code requires right to left layout, which is not supported by OrcaSlicer: %1%") % language_info->CanonicalName.ToUTF8().data();
	language_info = nullptr;
	}

[AbdElhalim12]

but when I replace the english mo file with the arabic one to test it, it worked

[Noisyfox]

but when I replace the english mo file with the arabic one to test it, it worked

Because in that case the app believes it's English not Arabic, which bypassed this check.

[AbdElhalim12]

Okaaay, So it there a way to exclude Arabic from that condition, since it's working correctly?

[Noisyfox]

You can just change the line I mentioned above, (or even delete that check)

[AbdElhalim12]

Hey, Ive tried couple things but all I got is the whole UI turned Right to left

[Noisyfox]

Ah... I guess that's how wxwidgets handles right-to-left languages.