[QGIS-trac] Re: [Quantum GIS] #1016: mysterious white box obscures data in the map window

[Quantum GIS]

#1016: mysterious white box obscures data in the map window
-----------------------------------------------------+----------------------
        Reporter:  rgaston                           |         Owner:  nobody                            
            Type:  defect                            |        Status:  new                               
        Priority:  major: does not work as expected  |     Milestone:  Version 0.9                       
       Component:  Graphics                          |       Version:  HEAD                              
      Resolution:                                    |      Keywords:  obscuring box, digitizing, zooming
Platform_version:                                    |      Platform:  All                               
        Must_fix:  No                                |   Status_info:  0                                 
-----------------------------------------------------+----------------------
Changes (by springmeyer):

  * keywords:  => obscuring box, digitizing, zooming
  * platform:  Windows => All
 * cc: blake at hailmail.net (added)

Comment:

 I have been running into this problem as well, using 0.10.0 on mac osx. It
 does not seem occur all the time, and I have not been able to track down a
 way to predictably trigger it when not happening. However, when it does
 happen(estimated 60% of qgis use for me) it makes accurate digitization
 extremely difficult and troublesome.

 It seems closely related to the similar issue of having the bounding box
 tool draw a solid grey polygon rather than a transparent polygon bbox.
 Additionally when the bbox is dragged over any vector features and then
 moved it leaves pure white. This also seems to occur will all other tools
 that have some drag or draw component.

 Two screenshots are attached of the digitizing tool and bbox zoom tool
 causing rendering problem.

 Changing the rendering properties in preferences does not seem to effect
 the problem.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/1016#comment:2>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats