broulik added a comment.
We use everything in Plasma "as a library", that's why
`KDeclarative::QmlObject` sets a translation context on the root context, so
that plasmoids, wallpaper plugins, and other QML bits can use `i18n` with no
translation domain (only exception really being the look and feel packages).
I'm too tired to explain right now but note when you run the KCM from within
Plasma you get a warning like:
QQmlContext: Cannot set context object for internal context.
QQmlContext: Cannot set property on internal context.
That is what breaks the translations in this case and used to work until we
shared `QQmlEngines` between the KCM and the window around it. However, if we
don't then the KCM uses the Plasma Qt Quick Controls style which is also
undesirable. We also don't want separate `QQmlEngine`s as then you run into
bugs and crashes since we would have objects (e.g. context properties and
singletons) between engines and they clean up each other's stuff and crash.
REPOSITORY
R115 Plasma Audio Volume Applet
REVISION DETAIL
https://phabricator.kde.org/D16595
To: aacid, #plasma, davidedmundson, mart
Cc: broulik, plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed,
jensreuterberg, abetts, sebas, apol, mart
