Fred,

commenting out the special handling for cairo version > 1.8.0 solved the
problem.

Thans a lot.

2014-10-25 14:16 GMT+02:00 Fred Kiefer <[email protected]>:

> Hi Edwin,
>
> yes, it is strange that you seem to be the only one that experiences
> this issue.
>
> I promised some some time ago to look into this problem after coming
> back from my holidays. I wanted to update my virtual Ubuntu machine and
> inspect the situation there. As it turned you, I didn't even have an
> Ubuntu virtual image :-(
> I will have to download one, probably for Ubuntu 14.10 now, install
> GNUstep on it and try with that. But that will require a lot more time
> then I expected.
>
> In the meantime cairo 1.14 has been released and I would expect that
> Ubuntu will use this in a few weeks. Maybe the issue will be resolved
> that way.
>
> But none of this touches the question why it is only you, who is seeing
> the issue. Maybe it is not cairo itself, but the graphics driver used?
>
> What you could do to investigate the issue yourself is to start
> debugging in the GNUstep cairo backend. If I remember correctly the
> method in question is in CairoGState
>
> - (void) compositeGState: (CairoGState *)source
>                 fromRect: (NSRect)srcRect
>                  toPoint: (NSPoint)destPoint
>                       op: (NSCompositingOperation)op
>                 fraction: (CGFloat)delta
>
> As you can see there is some special handling for copyOnSelf and that is
> the case you are after. You will also see special handling for a cairo
> version > 1.8.0, maybe cairo fixed this bug and that code wont be needed
> starting with cairo 1.13.0?
>
> Fred
>
>
> Am 25.10.2014 um 10:36 schrieb Edwin Ancaer:
> > Hello guys,
> >
> > is there anybody who is using Gworkspace, ProjectCenter, Gorm.... in
> > short any GNUstep application on an Ubuntu 14.04 or Fedora 19/20 based
> > distribution.
> >
> > I'm asking because on these distributions, I'm experiencing problems
> > when scrolling: the text gets blurred on the screen, the lines are no
> > longer aligned...
> >
> > It might be due to an unofficial libcairo version 1.13...(I must be
> > carefull here or Fred Kiefer will come and kick....) in these
> > distributions , but I seem to be the only person complaining, So it must
> > be that
> >
> >  1. everybody is using Gnustep on older distributions or on xxxBSD, or
> >     on Hurd or on anything where you can youse GNUstep, except
> >     Ubuntu/Fedora....
> >  2. nobody is really using gnustep, but someone is pretending it is
> >     still alive, and sending all these mails on this mailing list
> >  3. I'm the only person with this problem
> >
> >
> > In the last case, I will have to admit in public I'm the idiot that
> > cannot even compile and install GNUstep (and I've done some
> > installations the last weeks), and should be banned from using computers
> > any longer
> >
> > I'm not asking that anybody solves this problem, but I need to know if
> > I'm really unable to install GNUstep, or that there is at least somebody
> > else with the same problems... or, in case of option 2, send me a
> > private mail confirming GNUstep really is a joke. I promise I won't tell
> > anybody.
> >
> > Hoping somebody can end this agony before it drives me mad,
> >
> > Edwin Ancaer
> >
> >
> > _______________________________________________
> > Discuss-gnustep mailing list
> > [email protected]
> > https://lists.gnu.org/mailman/listinfo/discuss-gnustep
> >
>
>
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