[Qgis-developer] How to store a QIcon in QGIS project file?

[Germán Carrillo]

Thanks Alain, that would imply creating a new class in the QGIS source
code, and, unless other parts of the code needed it, I think it woudn't be
welcomed.

Regards,

Germán


2015-03-07 12:38 GMT-05:00 alain <al.bertho at free.fr>:

>  Hello,
>
> Maybe you can use a derived class, in python this would look like:
>
> QIconWithPath(QIcon):
>     def __init__(self,iconPath):
>         super(QIconWithPath,self).__init__(iconPath)
>         self.setIconPath(iconPath)
>
> I'm not sure this is considered elegant...
>
> Alain
>
> Le 07/03/2015 17:06, Germán Carrillo a écrit :
>
> Hi All,
>
>  I'd like to add a "Set Group Icon..." action to the context menu for
> groups in the layer tree. I'm preparing a pull request for that.
>
>  Everything is working fine, but I have a doubt on how to make the QGIS
> project to store the QIcon (location), so that when the project is open
> again, the QIcon can be constructed properly.
>
>  My first attempt was to store the QIcon path in the project, which works
> fine when the icon is set through QGIS GUI. However, it wouldn't work for
> PyQGIS users, who pass a QIcon object to the setIcon() method of
> QgsLayerTreeGroup. Since QIcon does not store its image file path, it would
> not be possible to access the path and store it in the project file. I
> would have to force PyQGIS users to set the image file path via get/set
> functions iconPath()-setIconPath(), which is not very elegant, but it's the
> only solution I see.
>
>  Do you know any other solution for this problem? Perhaps something about
> storing the QIcon somehow serialized?
>
>  Regards,
>
>  Germán Carrillo
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