[Konsole-devel] [Bug 163176] konsole paints wrong when scrolling upwards

Robert Knight robertknight at gmail.com
Sun Jul 27 00:00:47 UTC 2008

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------- Additional Comments From robertknight gmail com  2008-07-27 02:00 -------
> In current trunk the function starts at line 768, so I inserted a return in it.
> And surprise, no more artefacts for me. 

Thanks - you're right about the line number, I must have been looking at a different source file.  What that function does is to scroll the part of the visible display which has only moved up or down to avoid repainting it.  Then only the newly-exposed text or modified lines have to be repainted.  This makes scrolling much smoother and faster.  With the modified version you'll probably find that scrolling a large window is now slower and more jerky.

Some internal changes in Qt 4.4 broke this but I fixed those some time back.  

@ Everyone

Does anyone here who experiences this bug see odd scrolling behavior in other KDE programs?

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