[Interest] Dynamic translations for mobile apps at runtime?

[Julien Cugnière]

2016-03-03 18:50 GMT+01:00 Jérôme Godbout <jerome at bodycad.com>:
> We did the same thing into Qml, we have a C++ singleton equivalent to your
> backend, that select the current language files and emit the QString
> property changed.
> qsTr("String to convert") + I18n.revaluate
>
> I wish they made underlying hook to revaluate the qsTr() with a signal
> connected like if the qsTr() have changed. This pollute the code all over,
> only to be able to swap language on the fly.

Just an idea : you might be able to hide that I18n.revaluate with
something along the lines of :

    function myTr(s) {
        return qsTr(s) + I18n.revaluate;
    }

    Text {
        text: myTr("String to convert")
    }

Then you need to get lupdate to understand "myTr", which can be done
with the command line option "-tr-function-alias qsTr=myTr".

Although this incurs the overhead of a function call, which might
prevent QML from using its fast path for bindings evaluation. Not sure
if it matters.

Julien Cugnière