[Qgis-developer] QWT polar for qgis 3?

[Matthias Kuhn]

Hi,

it shouldn't be very hard to implement a custom QML component to display
this information even without QtCharts to get rid of qwtpolar.

Getting rid of qwt (which is present as package on more systems) can
then be postponed a bit.

Matthias

On 09/30/2016 07:43 AM, Nyall Dawson wrote:
> On 30 September 2016 at 15:39, Neumann, Andreas <a.neumann at carto.net> wrote:
>> Hi,
>>
>> I vaguely remember that it is used to display the satellite constellation of
>> GPS receivers. Potentially also used by some Python plugins.
> 
> Yeah - that's the only place it's used in QGIS itself.
> 
>>
>> qwt and qwt-polars did cause quite a few troubles for me during compiling in
>> the past.
>>
>> Given that qt5 has a charting component that also includes polar charts
>> (http://doc.qt.io/qt-5/qtcharts-index.html), I would appreciate to get rid
>> of the qwtpolar dependency.
> 
> Only problem is that QtCharts are Qt >= 5.7 only.
> 
> Last time we discussed this the conclusion was that it'd be moderately
> straightforward to reimplement the satellite widget as a custom widget
> ourselves. But no-one's done this and I think we can remove it until
> someone steps up to port it/fund a port.
> 
> Nyall
> 
> 
>>
>> Andreas
>>
>> On 2016-09-30 07:35, Nathan Woodrow wrote:
>>
>> Where is it used?
>>
>>
>> On Fri, 30 Sep 2016 3:10 pm Nyall Dawson <nyall.dawson at gmail.com> wrote:
>>>
>>> Just wanted to raise this discussion again now that we've dropped qt4
>>> compatibility.
>>>
>>> Should we remove all references to qwt polar from the source and
>>> remove the associated cmake flag? AFAIK it can't be used with qt5 and
>>> the flag causes a lot of issues for new builders who don't know that
>>> they need to disable it.
>>>
>>> Nyall
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>>
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