[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Window flickering (Was: Question on mini windows)

From: Richard Frith-Macdonald
Subject: Re: Window flickering (Was: Question on mini windows)
Date: Fri, 11 Jan 2008 18:29:31 +0000

On 11 Jan 2008, at 18:14, David Chisnall wrote:

On 11 Jan 2008, at 17:40, Fred Kiefer wrote:

Andreas Schik wrote:
On 2008-01-10 22:15:31 +0100 Sas(o Kiselkov <address@hidden>

It used to work on gnustep-gui-0.11 without any problem. Also, when I

I can confirm that. gui-0.12 worked for me as well.

run an app in my X environment, it start spawning a window a large
number of times over and over again (basically, it appears as a small
window flickering) for about two seconds. After that the app starts
up normally. Any subsequent app launching (of either the same app or
different ones) doesn't cause the flickering anymore. Any
This I have seen as well, but i occurs in -gui-0.12, too. I think
it is somehow related to Étoilé as I watched this flicker appear
the first time after installing Étoilé.

No, it isn't Etoile. This is the test used by GNUstep to find out about the window borders. The idea here is to check all combination of border settings once and to store the resulting window borders for these. The
values get cached on the root window, that is why you see it only for
one GNUstep applications. This wont be needed in the future, when more
and more window manager will adopt the new _NET_REQUEST_FRAME_EXTENTS
protocol. The code for this is already in GNUstep, just try it once with

I patched my version of GNUstep to draw the flickering windows off the screen and suffered no ill effects.

Yes, the only problem with that is that, if the window is off-screen, the window manager is under no obligation to decorate it ... so whether or not it works is window-manager dependent.

That being said, as the common window-managers seem to decorate the window whether it's off-screen or not, perhaps the best thing to do would be to create the windows off-screen normally, and have an NSUserDefault value to tell the backend to do it on-screen so that people can try that if the off-screen method doesn't work with their window manager.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]