Re: [Qemu-devel] [PATCH v2] ui: use evdev keymap when running under wayland

["Daniel P. Berrange" <berrange@redhat.com>]

On Thu, Dec 01, 2016 at 11:26:59AM +0000, Stefan Hajnoczi wrote:
> On Thu, Dec 1, 2016 at 11:25 AM, Stefan Hajnoczi <stefanha@gmail.com> wrote:
> > On Thu, Dec 1, 2016 at 11:20 AM, Stefan Hajnoczi <stefanha@gmail.com> wrote:
> >> On Thu, Dec 1, 2016 at 9:41 AM, Daniel P. Berrange <berrange@redhat.com> wrote:
> >>> Wayland always uses evdev as its input source, so QEMU
> >>> can use the existing evdev keymap data
> >>>
> >>> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
> >>> ---
> >>>
> >>> Changed in v2
> >>>
> >>>  - Actually add all changed files to commit - gtk.h :-)
> >>>
> >>>  include/ui/gtk.h | 4 ++++
> >>>  ui/gtk.c         | 7 +++++++
> >>>  2 files changed, 11 insertions(+)
> >>>
> >>> diff --git a/include/ui/gtk.h b/include/ui/gtk.h
> >>> index 42ca0fe..b3b5005 100644
> >>> --- a/include/ui/gtk.h
> >>> +++ b/include/ui/gtk.h
> >>> @@ -18,6 +18,10 @@
> >>>  #include <X11/XKBlib.h>
> >>>  #endif
> >>>
> >>> +#ifdef GDK_WINDOWING_WAYLAND
> >>> +#include <gdk/gdkwayland.h>
> >>> +#endif
> >>> +
> >>>  #if defined(CONFIG_OPENGL)
> >>>  #include "ui/egl-helpers.h"
> >>>  #include "ui/egl-context.h"
> >>> diff --git a/ui/gtk.c b/ui/gtk.c
> >>> index e816428..81dba57 100644
> >>> --- a/ui/gtk.c
> >>> +++ b/ui/gtk.c
> >>> @@ -90,6 +90,9 @@
> >>>  #ifndef GDK_IS_X11_DISPLAY
> >>>  #define GDK_IS_X11_DISPLAY(dpy) (dpy == dpy)
> >>>  #endif
> >>> +#ifndef GDK_IS_WAYLAND_DISPLAY
> >>> +#define GDK_IS_WAYLAND_DISPLAY(dpy) (dpy == dpy)
> >>> +#endif
> >>>  #ifndef GDK_IS_WIN32_DISPLAY
> >>>  #define GDK_IS_WIN32_DISPLAY(dpy) (dpy == dpy)
> >>>  #endif
> >>> @@ -1054,6 +1057,10 @@ static int gd_map_keycode(GtkDisplayState *s, GdkDisplay *dpy, int gdk_keycode)
> >>>              qemu_keycode = translate_xfree86_keycode(gdk_keycode - 97);
> >>>          }
> >>>  #endif
> >>> +#ifdef GDK_WINDOWING_WAYLAND
> >>> +    } else if (GDK_IS_WAYLAND_DISPLAY(dpy) && gdk_keycode < 158) {
> >>> +        qemu_keycode = translate_evdev_keycode(gdk_keycode - 97);
> >>> +#endif
> >>>      } else if (gdk_keycode == 208) { /* Hiragana_Katakana */
> >>>          qemu_keycode = 0x70;
> >>>      } else if (gdk_keycode == 211) { /* backslash */
> >>> --
> >>> 2.9.3
> >>>
> >>
> >> Great, you've fixed Wayland!
> >>
> >> This is GTK3-only so I used ./configure --with-gtkabi=3.0 on my system
> >> that has both GTK2 and GTK3 headers installed.  ./configure will
> >> select GTK2 by default and I'm not sure if that is a good idea
> >> nowadays.
> >>
> >> Tested-by: Stefan Hajnoczi <stefanha@redhat.com>
> 
> Sorry, Cole.  I pressed Send too quickly :).  I meant to add:
> 
> This patch is especially relevant for Fedora 25 where Wayland is the
> default.  Without the GTK UI will not handle cursor and other keys
> correctly.
> 
> Dan: Come to think of it, ui/sdl.c also has X11 keycode mangling.
> Perhaps that is broken too... :(

SDL doesn't have native Wayland support, so it will be running
via Xwayland, which will use regulard Xorg evdev mapping, so that
should be fine still.

Regards,
Daniel
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