Bug 161368

Summary: Zoomed Out Panning Performance
Product: [Unmaintained] plasma4 Reporter: Scott West <saynte>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Scott West 2008-04-28 14:34:07 UTC 
Version:            (using Devel)
Installed from:    Compiled sources
OS:                Linux

In the zoomed out view, moving around the desktops is very slow (to the point where anyone using it probably wouldn't like it). I believe it has something to do with the drawing of the pixmap background.

If the view is trying to be smart, it is probably clipping the redraw area to the visible region. However, when panning this is bad,  because panning is faster when you've drawn the whole image already  and you only reposition the full image into view (no real redrawing). This is probably what is killing the performance of the movement, as a default view will likely try to only draw the minimum amount.
Comment 1 Aaron J. Seigo 2008-07-05 07:27:12 UTC 
in 4.1 it's much, much smoother than it was in 4.0. i used to be able to reproduce this problem quite easily (e.g. every time i zoomed out ;) but no longer have problems with it.