[Portugal] [Fwd: [Qgis-developer] Decoupling of Layer structuring and Rendering Order]

[Giovanni Manghi]

-------- Forwarded Message --------
> From: Andreas Neumann <a.neumann at carto.net>
> To: qgis-developer <qgis-developer at lists.osgeo.org>, qgis-user
> <qgis-user at lists.osgeo.org>
> Subject: [Qgis-developer] Decoupling of Layer structuring and
> Rendering Order
> Date: Fri, 02 Dec 2011 08:40:26 +0100
> 
> Hi all,
> 
>  Some people already discovered it ;-): 
>  http://darrencope.com/2011/12/01/new-control-rendering-order-option-in-qgis/
> 
>  Thanks to the work of Jürgen there is now a decoupling of the layer 
>  structuring and the rendering order available in current master. It 
>  allows you to group layers thematically but decouple it from the 
>  rendering order. There is a separate panel called "Layer Order" 
>  available with a flat list of all layers where you can drag layers 
>  around to change the rendering order. There is a checkbox at the bottom 
>  of the two panels "Layers" and "Layer Order" to control which one takes 
>  precedence.
> 
>  The typical use case is that one generally wants polygon layers at the 
>  bottom, then line layers and point layers and labeling, but one does not 
>  want to wildly mix different topics. With the decoupling now you can 
>  group layers by topics in the regular layer panel and control the 
>  rendering order separately in the "Layer Order" panel.
> 
>  Be careful with using this new feature with QGIS Webclient - currently 
>  it will screw up if you use this mechanism. QGIS Webclient needs to be 
>  made aware that the rendering order is now different from the order in 
>  the layer tree. But with some modifications, QGIS Webclient will benefit 
>  from this enhancement as well.
> 
>  Please test this new functionality and report bugs,
>  Andreas
> 
> -- 
>  --
>  Andreas Neumann
>  Böschacherstrasse 10A
>  8624 Grüt (Gossau ZH)
>  Switzerland
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