[Qgis-developer] QGIS Custom Widget in Qt Designer

Wed Dec 7 22:42:51 PST 2016

On 12/07/2016 08:45 PM, Marco Bernasocchi wrote:
> Hi Denis,
> I was just put of by the fact that the xml tag is called customwidget.
>
> They are in fact promotet widgets. And I really wonder how this can work.
>
> Could you try the resource sharing plugin. Does it work for you?

Well, it made QGIS crash upon installation.
And now QGIS doesn't start anymore:

I get Warning: Object::connect: No such signal QWebPage::loadProgress(int)
And then a seg fault....

No real time to investigate...but probably due to the fact that I
compiled without QtWebKit.

>
> Ciao
>
>
>
> On 8 December 2016 02:16:55 GMT+13:00, Rouzaud Denis
> <denis.rouzaud at gmail.com> wrote:
>
>     Hi Marco,
>
>     This doesn’t sound like a QGIS custom widget issue since QWebView
>     is not related to QGIS.
>     It seems that QWebView is well defined in PyQt4 compatibility
>     layer [0].
>     The issue is probably that you try to run system uic instead of
>     qgis.PyQt.uic.
>
>     This make me thunk of the reply to Matteo as well….try to run
>     qgis.PyQt.uic instead of uic
>
>     I hope this helps
>
>     Denis
>
>     [0] https://github.com/qgis/QGIS/blob/release-2_18/python/PyQt/PyQt4/QtWebKitWidgets.py#L32
>
>
>
>
>>     On 7 Dec 2016, at 12:51, Marco Bernasocchi <marco at opengis.ch
>>     <mailto:marco at opengis.ch>> wrote:
>>
>>     Salut Denis,
>>
>>     I'm a bit lost, I see in plugins like the resources sharing tool [0]
>>
>>     <customwidgets>
>>      <customwidget>
>>       <class>QWebView</class>
>>       <extends>QWidget</extends>
>>       <header>QtWebKitWidgets/QWebView</header>
>>      </customwidget>
>>     </customwidgets>
>>
>>     and when I install the plugin I see:
>>
>>     This plugin is broken
>>     No module named QtWebKitWidgets.QWebView
>>
>>     this plugins also use the uic.loadUi approach
>>
>>     I've qgis installed from packages and also self build:
>>     marco at placebo:~/dev/QGIS/master/python/custom_widgets$ locate
>>     libqgis_customwidgets.so
>>     /usr/lib/x86_64-linux-gnu/qt4/plugins/designer/libqgis_customwidgets.so
>>     /usr/lib/x86_64-linux-gnu/qt4/plugins/designer/libqgis_customwidgets.so.2.18.1
>>     marco at placebo:~/dev/QGIS/master/python/custom_widgets$ locate
>>     qgis_customwidgets.py
>>     /home/marco/dev/QGIS/master/python/custom_widgets/qgis_customwidgets.py
>>     /home/marco/gis_data/pacsafe/QGIS/python/custom_widgets/qgis_customwidgets.py
>>     /usr/lib/python2.7/dist-packages/PyQt4/uic/widget-plugins/qgis_customwidgets.py
>>     /usr/lib/python2.7/dist-packages/PyQt4/uic/widget-plugins/qgis_customwidgets.pyc
>>
>>
>>
>>     Am I missing some magic somewhere? QtWebKitWidgets exists only
>>     from Qt5.
>>     in Qt4 it should still be QtwebKit.
>>
>>     ciao
>>     Marco
>>
>>
>>     [0]
>>     https://github.com/akbargumbira/qgis_resources_sharing/blob/master/resource_sharing/gui/ui/resource_sharing_dialog_base.ui#L598
>>
>>
>>     On 07.12.2016 22:58, Denis Rouzaud wrote:
>>>     Hi Matteo,
>>>
>>>     The file is not present simply because you did not install QGIS.
>>>
>>>     See here
>>>     https://github.com/qgis/QGIS/blob/master/python/CMakeLists.txt#L287
>>>
>>>
>>>     Having it documented somewhere would be nice:
>>>
>>>     * Approach when installing
>>>
>>>     * Without installing: were to put libqgis_customwidget and
>>>     qgis_customwidgets.py, how to run pyuic.
>>>
>>>
>>>     Cheers,
>>>
>>>     Denis
>>>
>>>     On 12/07/2016 10:41 AM, matteo wrote:
>>>>     Hold on.. I should have manage it..
>>>>
>>>>     I discovered that my machine was missing the file
>>>>
>>>>     qgis_customwidgets.py
>>>>
>>>>     in the folder
>>>>
>>>>     /usr/lib/python2.7/dist-packages/PyQt4/uic/widget-plugins/
>>>>
>>>>
>>>>     in another machine I found that file and I copied it in the
>>>>     right folder
>>>>     (the above one) and now it seems working, that is the plugin
>>>>     with the
>>>>     custom widget is now correctly loaded without any more issues..
>>>>
>>>>     So many thanks Denis for the assistance..
>>>>
>>>>
>>>>     My question is now.. why was that file missing in the folder?
>>>>     In the other machine I ran Ubuntu and I was used to compile
>>>>     QGIS with
>>>>     debian rules.
>>>>     In this new machine I compile QGIS with make and run it
>>>>     directly from
>>>>     the output folder (so QGIS has never been installed with repository
>>>>     packages and/or deb files, don't know if this could be related
>>>>     to the
>>>>     problem)
>>>>
>>>>     I have some confusion on my mind..
>>>>
>>>>     If this is worth I can put this solution (if you think it is a
>>>>     solution
>>>>     and not a workaround) somewhere in the website or another place
>>>>     so that
>>>>     other people facing the same problem could solve the issue.
>>>>
>>>>     Many many thanks to all
>>>>
>>>>     Matteo
>>>
>>>
>>>
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>>
>>     -- 
>>     Marco Bernasocchi
>>     OPENGIS.ch - berna.io - 27summits.ch
>>
>
>
> -- 
> Marco Bernasocchi (mobile).
> OPENGIS.ch <http://OPENGIS.ch> - berna.io <http://berna.io> -
> 27summits.ch <http://27summits.ch> 

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