[QGIS-trac] Re: [Quantum GIS] #1089: Crash when zooming in on rendered composer map

[Quantum GIS]

#1089: Crash when zooming in on rendered composer map
--------------------------------------------------------------+-------------
        Reporter:  StevenB                                    |         Owner:  mhugent                  
            Type:  bug                                        |        Status:  closed                   
        Priority:  critical: causes crash or data corruption  |     Milestone:  Version 1.0.0            
       Component:  Printing                                   |       Version:  HEAD                     
      Resolution:  fixed                                      |      Keywords:  composer render clip zoom
Platform_version:                                             |      Platform:  Debian                   
        Must_fix:  No                                         |   Status_info:  0                        
--------------------------------------------------------------+-------------
Changes (by mhugent):

  * status:  new => closed
  * resolution:  => fixed

Comment:

 Qt 4.4 and higher seems to have problems if processEvents() is called in
 the paint event of an item.
 I changed the code of QgsComposerMap such that cache() is not called any
 more from inside the items paint event. Render mode is disabled and user
 needs to press 'update preview' button to re-render the map after zoom.

 I hope this workaround solves the problem. If not, feel free to reopen the
 bug

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/1089#comment:4>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats