[QGIS-trac] [Quantum GIS] #3257: Enhancement: don't show label unless the feature is visible

[Quantum GIS]

#3257: Enhancement: don't show label unless the feature is visible
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   Reporter:  Alister           |              Owner:  nobody       
       Type:  enhancement       |             Status:  new          
   Priority:  minor: annoyance  |          Milestone:  Version 2.0.0
  Component:  Symbology         |            Version:  Trunk        
   Keywords:                    |   Platform_version:               
   Platform:  All               |           Must_fix:  No           
Status_info:  0                 |  
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 Labels are currently shown for features that are hidden behind other
 features.

 e.g. see the screenshot at [https://trac.osgeo.org/qgis/ticket/3253],
 where a white polygon has been used specifically to mask other layers.

 It would be good if the labelling engine could detect that a feature is
 invisible, and not label it.  Maybe this should be optional.

 I guess this might be very difficult to achieve... and if a good solution
 was implemented for #3253 I think the benefits of this labeling
 enhancement would be minimal.  But I figure it is worth recording the idea
 anyway.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3257>
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