[QGIS-trac] Re: [Quantum GIS] #2483: Window resize/zoom problem with large rasters

[Quantum GIS]

#2483: Window resize/zoom problem with large rasters
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   Reporter:  jctull                            |              Owner:  nobody       
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.6.0
  Component:  GUI                               |            Version:  HEAD         
   Keywords:  window resize large raster        |   Platform_version:  10.6.2       
   Platform:  OS X                              |           Must_fix:  Yes          
Status_info:  0                                 |  
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Changes (by pcav):

  * milestone:  Version 1.5.0 => Version 1.6.0


Old description:

> With current trunk and qt-4.6.2 on OS X, the qgis application window
> behaves strangely when trying to resize it. To reproduce the problem:
>
> 1) load a large raster image to the canvas (mine is a 600mb hillshade)
> 2) grab the window resize widget in the bottom right and drag to a new
> size.
> 3) wait patiently for the resize and redraw (note it does not redraw to
> where you dragged your mouse)
> 4) click the pan tool or top bar of the application window
>
> The result is the window resizing to a very small size after the
> interface click event. I am guessing this is memory-related, somehow, but
> just making a guess. I do not know if it is a qt or a qgis bug. FWIW, I
> do not have render caching enabled.

New description:

 With current trunk and qt-4.6.2 on OS X, the qgis application window
 behaves strangely when trying to resize it. To reproduce the problem:

 1) load a large raster image to the canvas (mine is a 600mb hillshade)

 2) grab the window resize widget in the bottom right and drag to a new
 size

 3) wait patiently for the resize and redraw (note it does not redraw to
 where you dragged your mouse)

 4) click the pan tool or top bar of the application window

 The result is the window resizing to a very small size after the interface
 click event. I am guessing this is memory-related, somehow, but just
 making a guess. I do not know if it is a qt or a qgis bug. FWIW, I do not
 have render caching enabled.

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/2483#comment:2>
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