On Tue, Dec 11, 2012 at 03:20:35PM -0800, Alan Alpert wrote: > On Tue, Dec 11, 2012 at 2:57 PM, André Pönitz > <andre.poen...@mathematik.tu-chemnitz.de> wrote: > > On Tue, Dec 11, 2012 at 09:48:22AM -0800, Alan Alpert wrote: > > ... > > > >> But there are other ways to support those use cases than adding a > >> C++ API for the new Actions. My initial thought is something like a > >> QActionBridge which can take a QAction or a QML Action to start with > >> and then generates the other on the fly. It's not pretty, but it's a > >> lot easier than abstracting out a QGuiAction and still allows you to > >> get a reference to the other type if you need the interoperability. > > > > That's already an implementation detail. It does indeed not have to be > > the same object, and it does not have to have _exactly_ the same > > interface. But it has to be "highlevel", and one has to be able to > > easily shift stance, i.e. move things from one side of the divide to > > the other without much ado. This sort of implies that the interfaces, > > down to property names, should be as close as possible - even if the > > "using" languages are quite different. > > Yes, the interfaces should be as close as possible where appropriate. > If the same thing is in both APIs, it should have the same name (and > the same type where possible). But this does not mean that things in > the QAction API should get any extra weighting when we design the QML > Action API - it should only have the things that make sense for what > QML does and how it will be used in QML. That would lead to > compromising the QML API for porting concerns, which is a *terrible* > choice for anyone writing a QML only application. It's a tough set of > concerns to balance.
I tend to disagree. Similiarity of APIs and familiarity with concepts has quite some impact on porting. We can safely assume that most of the C++ API is not there just for historical reason, but actually serves a purpose. There might be exceptions, there might be a grey zone ("whatsThis" probably belong there), but lacking any additional input I tend to believe that what's there will be needed, also in QML, sooner or later. I am certainly ready to balance different needs of different users of Qt. However, I find it quite hard to get a proper gut feeling here. Maybe you know better: Who is currently doing or intents to do pure QML applications? What is the expected share of those people in two or three years? Andre' _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development