[Qgis-developer] Decoupling core/data and GUI part of widgets in 3.0

[Richard Duivenvoorde]

+1 from me too

As a project we should really take the opportunity of a 3.0 branch to
review this kind of architectural cleanups and focus on a healthy code
base more then on new features for the .0 version, in my opinion.

best off course if core dev's take the lead in this

Regards,

Richard



On 31-08-16 08:37, Nathan Woodrow wrote:
> I'm a big +1 on that.  I will add my notes on a QEP if one is opened
> 
> (Hopefully I can be a bit more active in the project after a bit of a break)
> 
> - Nathan
> 
> On Wed, Aug 31, 2016 at 4:29 PM, Neumann, Andreas <a.neumann at carto.net
> <mailto:a.neumann at carto.net>> wrote:
> 
>     Hi all, Hi Nyall, Matthias and Denis,
> 
>     After some discussion with Nyall we stumbled again over the
>     inconvenience that widgets in QGIS mix data (core) and GUI part.
>     This effects many places in QGIS where you want to address the
>     display value of a widget instead of the raw value: QGIS Server
>     (e.g. GetFeatureInfo Requests), Print Composer, Labels, Save to
>     Spreadsheet with human readable values, and many more.
> 
>     So before people are introducing more and more widgets (which is
>     nice) I would suggest to first improve our widget infrastructure for
>     QGIS 3.0 to decouple the Core/data part from the GUI part, which
>     would allow code to access all widget configuration and
>     properties without having to deal with the GUI part of the widget.
>     Nyall mentioned that the symbology rendering separates this nicely,
>     but the attribute widgets do not.
> 
>     Nyall suggested to do a QEP for that to discuss the implications and
>     how this can be cleanly designed.
> 
>     Matthias - since you are "the widget guy" - do you want to take a
>     lead on this QEP? Or should I ask Nyall?
> 
>     Thanks,
> 
>     Andreas
> 
>      
> 
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