xfway: added support for alt-tab switcher

[adlo]

As in later than 0.15.x that is, just to clarify.

Regards
adlo

> On 24 Aug 2022, at 22:23, adlo <adloconwy at gmail.com> wrote:
> 
> 
>> 
>>> On 24 Aug 2022, at 08:44, Gaël Bonithon <trash.paradise at protonmail.com> wrote:
>>> 
>>> What error is it giving you?
>> 
>> [75/91] Compiling C object src/wayland/compositor/hopalong.p/hopalong-xdg.c.o
>> [...]
>> ../src/wayland/compositor/hopalong-xdg.c:386:29: error: too few arguments to function 'wlr_xdg_shell_create'
>>   386 |         server->xdg_shell = wlr_xdg_shell_create(server->display);
>> [...]
>> [76/91] Compiling C object src/wayland/compositor/hopalong.p/hopalong-cursor.c.o
>> [...]
>> ../src/wayland/compositor/hopalong-cursor.c: In function 'cursor_motion':
>> ../src/wayland/compositor/hopalong-cursor.c:140:46: error: invalid use of undefined type 'struct wlr_event_pointer_motion'
>>   140 |         wlr_cursor_move(server->cursor, event->device, event->delta_x, event->delta_y);
>> [...]
>> [77/91] Compiling C object src/wayland/compositor/hopalong.p/hopalong-seat.c.o
>> [...]
>> ../src/wayland/compositor/hopalong-seat.c:59:85: error: 'struct wlr_input_device' has no member named 'keyboard'
>>    59 |         wlr_seat_keyboard_notify_modifiers(keyboard->server->seat, &keyboard->device->keyboard->modifiers);
>> 
>> Both with Wlroots 0.15.1 and with Wlroots-git.
> 
> You say you get this error with wlroots 0.15.1?
> 
> Looking at it these error messages would seem to suggest that you're compiling against a wlroots version later than 0.15?
> 
> Regards
> adlo