Linux: Dark theme option in app

[Zhenchik88]

hello!

thank you very much for a wonderful app.
could you please add an option to switch light/dark theme within the app? i'm on debian 13 (using gnome) and installed version 8.3.2 the other day, but NAPS is currently in light mode, while my system using dark one.
i tried installing both deb package and flatpak, but result is the same.
would be great if you add such feature.

thanks anyway!

peace!

[alicavus]

@Zhenchik88 as workaround you can add line bellow to [Settings] section of $HOME/.config/gtk-3.0/settings.ini:
gtk-application-prefer-dark-theme=1

If there is not a file $HOME/.config/gtk-3.0/settings.ini, create it and paste content bellow:

[Settings]
gtk-application-prefer-dark-theme=1

(This will tell all gtk apps to prefer dark theme)

[Zhenchik88]

@Zhenchik88 as workaround you can add line bellow to [Settings] section of $HOME/.config/gtk-3.0/settings.ini: gtk-application-prefer-dark-theme=1

If there is not a file $HOME/.config/gtk-3.0/settings.ini, create it and paste content bellow:

[Settings]
gtk-application-prefer-dark-theme=1

(This will tell all gtk apps to prefer dark theme)

i will try that, thank you!

[alicavus]

@Zhenchik88

[Zhenchik88]

@Zhenchik88

nice!
but i have a question: how is your NAPS2 window is dark and other windows are light themed?

[alicavus]

nice! but i have a question: how is your NAPS2 window is dark and other windows are light themed?

NAPS2 is gtk3 app, but GNOME is gtk4, and prefer dark option in gtk4 is deprecated. GNOME has 'prefer-dark' key option in gsettings:

$ gsettings set org.gnome.desktop.interface color-scheme 'prefer-dark'

[Zhenchik88]

nice! but i have a question: how is your NAPS2 window is dark and other windows are light themed?

NAPS2 is gtk3 app, but GNOME is gtk4, and prefer dark option in gtk4 is deprecated. GNOME has 'prefer-dark' key option in gsettings:

$ gsettings set org.gnome.desktop.interface color-scheme 'prefer-dark'

thank you very much!
so is this 'prefer-dark' key option disabled by default?

[alicavus]

thank you very much!
so is this 'prefer-dark' key option disabled by default?

• gtk-application-prefer-dark-theme property's default value is FALSE (gtk3 gtk4)
• org.gnome.desktop.interface scheme's color-scheme key's default value is "default":

 <key name="color-scheme" enum="org.gnome.desktop.GDesktopColorScheme">
      <default>'default'</default>
      <summary>Color scheme</summary>
      <description>
        The preferred color scheme for the user interface. Valid values are “default”, “prefer-dark”, “prefer-light”.
      </description>
    </key>