I'm not sure I imprelented this for Regione Toscana many years ago... in
2.x code before legend refractory. There a combination of
getLegendGraphic + BBOX supported by server side serving the correct legend
image. But probably code is radically changed in that part, mainly due to
legend refractory. I would look for getLegendGraphic keyword.

The expected behaviour was to retrieve the legend image if BBOX changed
modifing it in the legend panel.

cheers

Luigi Pirelli

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On Wed, 18 Sep 2019 at 08:02, Alessandro Pasotti <[email protected]> wrote:

> Hi,
>
> I'm testing the WMS contextual legend feature in QGIS client and -
> supposing that the expected behavior is that when zooming and panning the
> canvas the legend should be reloaded to only show items related to what's
> in the canvas (that I'm not 100% sure it is) - I cannot make it work, I
> didn't find anything in the source code that perform this action.
>
> Does anyone knows what's the expected beavior is and how it is supposed to
> work?
>
> Thanks.
>
> --
> Alessandro Pasotti
> w3:   www.itopen.it
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