[Bug 165064] New: folderview: item highlight renders slowly at borders

[Stephan Burkhardt]

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http://bugs.kde.org/show_bug.cgi?id=165064         
           Summary: folderview: item highlight renders slowly at borders
           Product: plasma
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: widget-folderview
        AssignedTo: panel-devel kde org
        ReportedBy: oceanofsolaris gmx net


Version:           unknown (using 4.00.83 (KDE 4.0.83 (KDE 4.1 Beta2), Kubuntu packages)
Compiler:          gcc
OS:                Linux (x86_64) release 2.6.24-19-generic

When hovering over an item, it is highlighted with an blue rectangle. If the item is very close to the border (achieved by scrolling so that only half of it is visible) it fades out towards the border. Now if I hoover the mouse over one of those items the rendering of the (by the way very nice-looking) highlight-box takes about 4 seconds (compared to a fraction of a second when the highlighted item is in the middle of the folderview).
I have a Nvidia 8600gt and I am using the closed driver.
The bug can be reproduced:
-add a new folderview and let it show a folder with many files in it
-scroll so that one of the files is only partly visible
-hover over it and wait

Sometimes this works much faster, especially when i highlighted another file from the same row with the same icon (e.g: two folders).
Note: I am experiencing a very slow kde4 rendering performance alltogether (resizing windows, dolphin reacting to a click....), but this might be because of my graphics card or the kubuntu packages.
Ah, by the way, kde4beta2 is really amazing, I am really impressed.

Stephan