Re: [PATCH virt-viewer] Disable CSD to avoid rendering issues

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On Tue, 2016-08-09 at 15:57 +0100, Daniel P. Berrange wrote:
> On Tue, Aug 09, 2016 at 04:40:02PM +0200, Pavel Grunt wrote:
> > 
> > On Tue, 2016-08-09 at 15:12 +0100, Daniel P. Berrange wrote:
> > > 
> > > On Tue, Aug 09, 2016 at 04:09:15PM +0200, Pavel Grunt wrote:
> > > > 
> > > > 
> > > > Due to recent changes in gtk+ the content of window is not rendered
> > > > properly in Windows 10 when the client side decorations are used.
> > > > 
> > > > It is possible to disable the client side decorations using
> > > > the GTK_CSD="0" environment variable.
> > > > 
> > > > Keep them disabled to avoid issues.
> > > > 
> > > > Related:
> > > > https://bugzilla.redhat.com/show_bug.cgi?id=1352216
> > > 
> > > Can you provide the actual GTK bug report for this issue.
> > 
> > I am working on reproducer for the issue. Apparently only remote-viewer has
> > problems.
> > > 
> > > 
> > > > 
> > > > 
> > > > ---
> > > > I know it is not a solution. virt-viewer should learn to work properly
> > > > with
> > > > CSD
> > > > ---
> > > >  src/virt-viewer-util.c | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > > 
> > > > diff --git a/src/virt-viewer-util.c b/src/virt-viewer-util.c
> > > > index 0491f73..1b0335d 100644
> > > > --- a/src/virt-viewer-util.c
> > > > +++ b/src/virt-viewer-util.c
> > > > @@ -295,6 +295,8 @@ void virt_viewer_util_init(const char *appname)
> > > >          }
> > > >      }
> > > >  #endif
> > > > +    /* FIXME: avoid rendering issues with csd - used by default in
> > > > Win10*/
> > > > +    g_setenv("GTK_CSD", "0", TRUE);
> > > 
> > > At the version least you should make this hidden behind G_OS_WIN32,
> > > even better if you can make it only happen on Win10 at runtime.
> > 
> > I wanted to keep it for every OS so it is harder to forget about fixing it.
> 
> Nope that'll break virt-viewer when run under Wayland, since AFAIK, the
> Wayland compositors all request CSD

GTK_CSD is ignored under Wayland/when cannot be used. But I can of course move
it up to the G_OS_WIN32 to make it more clear.

Thanks,
Pavel

> 
> Regards,
> Daniel

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