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

[Andreas Neumann]

 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

-- 
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 Andreas Neumann
 Böschacherstrasse 10A
 8624 Grüt (Gossau ZH)
 Switzerland