[Qgis-developer] Composer Legend items: what are the differences between "auto-update" and "update all" options?

Andreas Neumann a.neumann at carto.net
Wed Oct 14 05:20:34 PDT 2015


I am adding the UX (user interface) list about this legend discussion.

The whole situation about legend updates and the current legend GUI in 
composer is indeed a bit confusing and changed quite a bit in the last 
one (or two? releases). I also think that the "Auto update" checkbox and 
the "Update all" button next to it are almost redundant.

As far as I can tell, in the very recent master version, all the symbol 
changes that happen in the legend tree of the main application 
immediately reflect to the composers anyway (without any user 
intervention and regardless of the AutoUpdate checkbox - I think this is 
the expected behavior that most users want) - so can't we remove that 
Autoupdate button? Or better rename it to "Reset Legend" - which would 
more accurately describe what it does?

I also think that the "AutoUpdate" checkbox should not be turned on by 
default. The AutoUpdate now only concerns that new layers or entries in 
the layer are automatically added into the legend. I doubt that many 
users want to have that behavior enabled by default - because it means 
that the legend can grow uncontrolled in size and run off the page 
relatively quickly.

@Alexandre: note that the "Update selected" already works on the context 
menu (right-klick) if you select a layer. But now that updates happen 
automatically, I am not sure if the update of a single layer is needed 

Just my thoughts on the issue.


On 14.10.2015 13:16, Alexandre Neto wrote:
> Like you said the "update all" button behaviour can be done by 
> selecting and unselecting the Update checkbox. But I find it not very 
> elegant solution. Therefore the "extra" button makes sense to me.
> Besides, it would be nice if, in the future, the "update all" button 
> become "updated selected itens" if Items are selected. Not sure if 
> that is planed, but I can sure make a feature request for that.
> Alexandre Neto
> Em qua, 14 de out de 2015 às 08:06, m roy <royroge at outlook.com 
> <mailto:royroge at outlook.com>> escreveu:
>     > Isn't there another way to provide same capabilities without two
>     buttons?
>     >
>     If i understood what bother you is the fact that there are two
>     options (check box and button) to do quite the same thing, to
>     me it's ok because i see they have different behaviour (one is fully
>     automatic).
>     If this bother you so much you may open a feature request
>     and ask for the removal of the button.
>     all the best, Roy.
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