[Qgis-developer] lock layers for map items

[Andreas Neumann]

  Hi,

For me, keeping the layer visilibity was the main reason we wanted the 
feature back then. We did not want a real freeze, which means we wanted 
the behavior that changes to geometry and symbology would be reflected 
in the map layouts.

I can see that for other purposes you would want a complete freeze - but 
in that case wouldn't it be more useful to just export the map to a file 
and add it to the layout?

In any way, the current behavior of the layer lock should be kept I 
think. If other types of freezing are introduced they shouldn't 
overwrite the current behavior, but add a new type of freezing/locking 
in parallel.

Just my opinion.

Thanks,
Andreas

On 9/26/10 9:42 AM, Marco Hugentobler wrote:
> Hi Paolo
>
> This option keeps the visibility (on/off) of the maplayers. Main use case is to
> have an overview map where not all layers are visible.
>
> As the composer uses the central  QgsMapLayerRegistry, it is not easily
> possible to have a totally different set of layers as in the main canvas.
>
>
> Regards,
> Marco
>
> Am Freitag, 24. September 2010, um 18.59:41 schrieb Paolo Cavallini:
>> Hi all.
>> I do not understand well how this option (in the Map composer) works: in my
>> interpretation, it should freeze the map as it is, so one could meke
>> whatever change to the canvas, and add a totally different map view. In
>> reality, is seems that the option only prevents a layer from disappearing
>> when removed or hidden in the canvas; colours and symbols are updated.
>> I think the behaviour I described first would be more useful. Am I wrong?
>> Am I missing something?
>> All the best.
>