Re: [Qemu-devel] QEMU 0.8.1 - Invisible wall

[Dan Sandberg]

Thomas Han wrote:

> Hi Anthony,
>
> Sorry for the late reply.  I did try out the patch with my local build 
> and I
> haven't see that  "invisible wall" mouse problem for a few days now.
>
> Thanks very much,
> Thomas
>
> On 5/4/06, Anthony Liguori <address@hidden> wrote:
>
> > Thomas Han wrote:
> > > Hi,
> > >
> > > For what it's worth.  I have also seen this "invisible wall" problem
> > > with my mouse for a few weeks off the CVS build too.
> >
> > Can you try out the following patch.  *grumbles about SDL's brokenness*
> >
> > Regards,
> >
> > Anthony Liguori
> >
> > > Since 0.8.1 came out yesterday, Instead of using CVS build, I'm now
> > > running Qemu 0.8.1 + kqemu-1.3.0pre6.  My host OS is FC5 and I'm
> > > running XP inside it.
> > >
> > > Thanks,
> > > Thomas
> > >
> > > On 5/4/06, *Christian MICHON* < address@hidden
> > > <mailto:address@hidden>> wrote:
> > >
> > >     qemu 0.8.0 does not show this invisible barrier issue.
> > >     if this is worth anything, I use SDL 1.2.9.
> > >
> > >     If someone can reproduce the issue also on linux hosts,
> > >     there could be a lead.
> > >
> > >     On 5/4/06, Christian MICHON <address@hidden
> > >     <mailto:address@hidden>> wrote:
> > >     > I removed manually vnc_display_init, and this is not the
> > culprit...
> > >     > I'll check anyway versus qemu-0.8.0...
> > >     >
> > >     --
> > >     Christian
> > >
> > >
> > >     _______________________________________________
> > >     Qemu-devel mailing list
> > >     address@hidden <mailto:address@hidden>
> > >     http://lists.nongnu.org/mailman/listinfo/qemu-devel
> > >
> > >
> > > 
> > ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > Qemu-devel mailing list
> > > address@hidden
> > > http://lists.nongnu.org/mailman/listinfo/qemu-devel
> > >
> >
> >
> >
> > diff -r 39a6dd1136c6 sdl.c
> > --- a/sdl.c     Thu May 04 04:13:13 2006 +0000
> > +++ b/sdl.c     Thu May 04 21:30:11 2006 -0500
> > @@ -280,13 +280,18 @@ static void sdl_update_caption(void)
> >
> > static void sdl_hide_cursor(void)
> > {
> > -    SDL_SetCursor(sdl_cursor_hidden);
> > +    if (kbd_mouse_is_absolute()) {
> > +       SDL_ShowCursor(1);
> > +       SDL_SetCursor(sdl_cursor_hidden);
> > +    } else {
> > +       SDL_ShowCursor(0);
> > +    }
> > }
> >
> > static void sdl_show_cursor(void)
> > {
> >      if (!kbd_mouse_is_absolute()) {
> > -       SDL_SetCursor(sdl_cursor_normal);
> > +       SDL_ShowCursor(1);
> >      }
> > }
> >
> >
> >
> > _______________________________________________
> > Qemu-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/qemu-devel
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Qemu-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
>  
On my installation (v0.8.1 with WindowsXP host) the "invisible wall" can 
be avoided or reproduced at will and I guess this indicates what´s wrong.

After leaving MouseGrab with Ctrl-Alt there will be an invisible wall if 
I reenter by clicking with the host's mouse pointer far away from where 
the quest-OS-pointer is. On the other hand if I reenter by carefully 
clicking exactly at the guest-OS-pointer they will be in sync and 
everything seems to be OK.
I haven´t been looking at the source-code, but my suggestion is that in 
the Click-event-handler where Mousegrab is entered the guest-OS pointer 
coordinates should be passed rather than the host's coordinates 
(simulating a click at the exakt right position).
Regards
Dan Sandberg