[Ctk-developers] Simplification of CTK PythonQt wrapping

[Steve Pieper]

+1
On Apr 14, 2014 2:23 PM, "Jean-Christophe Fillion-Robin" <
jchris.fillionr at kitware.com> wrote:

> Hi Folks,
>
> Overview
> ------------
> As some of you knows, CTK provides some CMake function and Qt classes to
> facilitate the scripting of Qt application using "PythonQt" [1][2]
>
>
> I propose to remove the unmaintained support for PythonQt full wrapping
> and optimize the existing light wrapping.
>
>
> If you never build CTK with wrapping enabled, you can archive this email.
> The proposed changes won't impact your existing projects.
>
>
> Details
> --------
>
> Currently, there is a build option named "CTK_ENABLE_Python_Wrapping"
> allowing to enable the automatic wrapping of CTK classes and also expose
> the tool to "wrap" classes within your application.
>
>
> The wrapping exists in two flavors:
>
>  * Light wrapping (the default)
>  * Full wrapping
>
>
> Light wrapping: This basically check that Qt classes derives from QObject
> and then create "PythonQtDecorator" allowing to instantiate/delete your
> classes.
>
> Full wrapping: Attempt to make automatic use of the PythonQtGenerator
> (used to also wrap Qt for PythonQt).
>
>
>
> Proposed changes:
> ------------------------
>
>  - Removal of option related to "Full" wrapping. This never really worked.
> It would require us to maintain our set of "xml" files describing CTK
> classes. See [3] for an examples. Later one, we could also look at
> PySide[4] and see how it could be supported.
>
>  - Simplification and optimization of the existing "Light" wrapping. In
> project like Slicer where there is a lot of library to "light wrap" .. the
> CMake configuration time is considerably impacted.
>
>  - Associated issue: https://github.com/commontk/CTK/issues/449
>
>  - To learn more about the differences between PySide/PyQt/PythonQt. See
> "Comparison with PyQt/PySide" on [5]
>
>
>
> Let me know what you think,
>
> Thanks
> Jc
>
>
> [1] http://pythonqt.sourceforge.net/
>
> [2] https://github.com/commontk/PythonQt#pythonqt
>
> [3]
> https://github.com/commontk/PythonQt/blob/patched-3/generator/typesystem_core.xml
>
> [4] https://qt-project.org/wiki/About-PySide
>
> [5] http://pythonqt.sourceforge.net/Features.html
>
> --
> +1 919 869 8849
>
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