[Qgis-developer] QGIS 2.0 and PyQT v2 update

[Martin Dobias]

On Thu, Apr 25, 2013 at 10:26 PM, Andreas Neumann <a.neumann at carto.net> wrote:
> Hi,
>
> It has been discussed that PyQT should be updated to v2 befor the QGIS
> 2.0 release. Is this still a feasible goal?
>
> I think it would be good to also update it before 2.0. With the new
> Vector API most plugin developers need to rework their plugins anyway.
> It would be good to also do the PyQT v2 update now.
>
> It would be bad if would release QGIS 2.0 without the PyQT v2 update and
> then shortly after we would break all plugins again, because of the PyQT
> v2 update.
>
> Is Martin the one who would work on this - or can/will others work on
> this as well? Martin - will you have time?

I would be happy to do the switch, though I will be on holiday for the
next 10 days. I can have a look at it when I come back. But if there
is anyone willing to give it a try in meanwhile, feel free to do it
:-) I am attaching a diff with preliminary changes to switch to spi
api 2 - if anyone would like to play with it.

IIRC there are few things that need to be sorted out:
- dealing with QVariant::Type which is used e.g. in QgsField. Most
likely we can safely switch to using QMetaType::Type (QVariant is not
directly available anymore)
- take care with transition of QSettings [1]
- provide a shortcut that python tests and third-party scripts could
use for setting sip api 2 (has to be set explicitly if not running
within QGIS)
- migrate any plugin code within QGIS source tree

[1] http://pyqt.sourceforge.net/Docs/PyQt4/pyqt_qsettings.html

Regards
Martin
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