Font preferences work in a strange way

[dkuteynikov]

Built the latest Xiphos from git, master branch, commit ece84a4
Ubuntu 20.04.1 LTS
Go to Edit -> Preferences -> Fonts -> Sizes and Faces
When you select a language, a dialog appears where you can select a font scale factor. After you select the font size and press OK, the result is NOT displayed in the preferences window. So if you dislike how the text started to look, you cannot simply change the value again. Instead, the only way is to select some other language, cancel a dialog that will appear, then return back to the language which you intended to fix and finally change the size in a new dialog.

[karlkleinpaste]

i'm open to concrete coding suggestions.
the problem is that gtk's mechanism for combo box sends a signal for handling only when the item selected changes. once a particular language is displayed, there's no way to generate a new indication for handling without changing what's selected.

[dkuteynikov]

Can't you just get rid of the extra dialog and embed it's content into the Size & Faces window? For example, it could look like this:

Font Sizes
Base font size [+2]
Verse number size [+0]
Font preferences, per language [Greek]
abc Change font for Language
[None] [+0]
[✓] Use the default font for this module

When everything is located in one window, there will be no need to make some magic with the dialogs to change the font. A user will simply change it in-place, below the combobox.

[alerque]

This is a duplicate of #911. The UI needs to either move to a single dialog like @dkuteynikov suggested or a button needs to be added after the combo box widget for "edit" and the signal needs to move from "on change" on the combo box to "on press" on the edit button. The combo box by itself is simply not suited for the use case.