[Qgis-community-team] print composer: refresh view

[Andreas Neumann]

Hi Larissa and others, 

In my opinion, this button should be removed from QGIS. The normal
workflow is, that you change an item's property and the change refreshes
the display of the concerned item automatically, without having to press
the refresh button. 

It is only here to work around bugs, like the recently fixed bug
described here: https://issues.qgis.org/issues/21624 that involves
update of item position and size defined by an expression, after a
change in layout format or orientation. 

Another issue the refresh button may help fix, are layer redraws when
network requests are unsuccessful. In such a case one could refresh the
rendering of the map. Or in case you change the symbology in the main
QGIS window and want to see the updates immediately without having to
zoom/pan or change an item. 

@Nyall: what are your thoughts on the refresh button? 

Greetings,
Andreas 

On 2019-03-29 15:25, Larissa Junek wrote:

> Hello guys,
> 
> I'm dealing with the chapter "Laying out the maps" at the moment.
> I'd like to have information about the "refresh view" feature.
> What is an unconsistent state when using the print layout? From the
> technical point of view:
> what does this button do in detail?
> 
> Actually my colleagues at the Town of Hannover start working with QGIS.
> They would like to have the map items to be updated through this button.
> Everyone wonders what they can do with this button and find it rather
> unuseful.
> 
> Cheers, Larissa
> 
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