Opened 14 years ago
Last modified 13 years ago
#2483 new bug
Window resize/zoom problem with large rasters
| Reported by: | jctull | Owned by: | nobody |
|---|---|---|---|
| Priority: | major: does not work as expected | Milestone: | Version 1.7.0 |
| Component: | GUI | Version: | Trunk |
| Keywords: | window resize large raster | Cc: | |
| Must Fix for Release: | No | Platform: | OS X |
| Platform Version: | 10.6.2 | Awaiting user input: | no |
Description (last modified by )
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.
Change History (4)
comment:1 by , 14 years ago
comment:2 by , 14 years ago
| Description: | modified (diff) |
|---|---|
| Milestone: | Version 1.5.0 → Version 1.6.0 |
comment:3 by , 13 years ago
The default behavior is to disable the render improvement option in QGIS. It is unclear if this bug is a result of qt problems or something in the QGIS code. A real solution would be great, especially as further render enhancements are developed for QGIS.
comment:4 by , 13 years ago
| Must Fix for Release: | Yes → No |
|---|
Cannot confirm here. Can you please check with to be released 1.7 version?
Disabling rendering is a means to circumvent the issue. Perhaps it would be possible to disable rendering of the map canvas on resize events as a workaround?