[Development] Question about Qt's future

[Peter Kümmel]

On 28.04.2014 08:10, Kurt Pattyn wrote:
>
>
>> On 28 Apr 2014, at 07:53, Peter Kümmel <syntheticpp at gmx.net> wrote:
>>
>>> On 27.04.2014 22:40, Thiago Macieira wrote:
>>>> Em dom 27 abr 2014, às 13:09:50, Peter Kümmel escreveu:
>>>>> On 26.04.2014 17:39, André Pönitz wrote:
>>>>> You could have made the point "declarative structures are good for GUI
>>>>> description" for Qt Widget's .ui files, after all, .ui files contents
>>>>> pretty much _is_ declaring layout nesting and property values.
>>>>
>>>> Just an idea:
>>>> Declarative-only QML files could be translated to C++ by a tool similar
>>>> to uic, and then used by a C++-only successor of QtWidgets.
>>>>
>>>> Or are there any technical reasons why all the state-of-the-features
>>>> provided by QML v2 could not be implemented on the C++ side assuming
>>>> there is a QML-to-C++ code generation step?
>>>
>>> It's possible, but there's no API in the C++ side to create the graph. Until
>>> such an API exists, you can't write the generator.
>>
>> I know that currently there is no support for this in Qt, also no plans
>> to add it, all I wanted to hear is "It's possible".
>>
>> I assume it would be only a community-driven long-term project, which takes
>> years until it is on par with QtWidgets. But hey, I'm fascinated by the idea,
>> and maybe I'm not alone.
>>
>> ATM the problem is to get started because I don't know much about the
>> current architecture of the graphic stack.
>> Any hints where to start for a first hello world?
>
> Maybe a translation from QML to a .ui file could be a first step? That could work if you use QtWidgets in the QML file.

I think we should start on top of the C/C++ part of current QMLv2 stack (if such a thing exists), with some handwritten
widget code. Otherwise we have a QPainter based system which we already have with QWidgets.

>>
>>
>>>
>>> Care to contribute the C++ side, including passing all the reviews? Note that
>>> this is a major undertaking and will probably take two or three releases to
>>> get a minimal functional API out there. Plus the maintenance effort.
>>
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>