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List: kde-optimize
Subject: Re: Menus: unnecessary repaints?!
From: Karl Vogel <karl.vogel () seagha ! com>
Date: 2003-06-06 7:39:15
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On 05 Jun 2003, you wrote in kde.kde-optimize:
> It's only a problem if you scroll a few lines. If you scroll a lot,
> the whole screen needs to be refreshed anyways.
That's only the case if you scroll more than a page within the refresh
timer interval. (which, when I'm working, is seldomly the case)
If the screen scrolls less than 1 page in the timer interval, then using a
scroll instead of repaint will always be more bandwidth efficient than a
repaint.
> It shouldn't be that hard to add some scroll detection and do a
> scroll+repaint when it has scrolled only a little. Not sure if you
> will run into problems with invalid areas that need repainting before
> scrolling though.
Well it's only useful for low bandwidth scenario's, as the KDE 3.1.1 patch
optimized the repainting by using 2 timers.
BTW: the 3.1.2 konsole repainting is pretty broken anyway. It happens ALOT
that stuff is left on the display (problem is that I haven't been able to
see a pattern yet).
Guess we are getting a bit side tracked from the menu issue :-)
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