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http://bugs.kde.org/show_bug.cgi?id=161368
Summary: Zoomed Out Panning Performance
Product: plasma
Version: unspecified
Platform: Compiled Sources
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
AssignedTo: panel-devel kde org
ReportedBy: saynte gmail com
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.