For the GDK backend We're using the GdkDeviceManager API, which maps to
Clutter's own device manager API. GDK has now moved to a per-seat device
management model, and deprecated the device manager singleton one.
In order to avoid the deprecation warnings, we'd have to implement a
model similar to the GDK one inside the generic Clutter API, but that
would also require moving all the others backend to it, which is pretty
pointless.
Instead, we can disable deprecation warnings for the
ClutterDeviceManager implementation inside the GDK backend.
-Don't include unistd.h and stdint.h unconditionally as not all Windows
compilers have them around.
-Only include cogl/cogl-xlib.h when it is really supported by Cogl and GDK.
-sys/ioctl.h is not available on Windows (MinGW/MSVC).
-Correct the call to cogl_renderer_set_winsys_id:
(backend_cogl->cogl_renderer, COGL_WINSYS_ID_WGL) ->
(renderer, COGL_WINSYS_ID_WGL)
This commit introduces a new flavour for Clutter, that uses GDK
for handling all window system specific interactions (except for
creating the cogl context, as cogl does not know about GDK), including
in particular events. This is not compatible with the X11 (glx)
flavour, and this is reflected by the different soname (libclutter-gdk-1.0.so),
as all X11 specific functions and classes are not available. If you
wish to be compatible, you should check for CLUTTER_WINDOWING_X11.
Other than that, this backend should be on feature parity with X11,
including XInput 2, XSettings and EMWH (with much, much less code)
https://bugzilla.gnome.org/show_bug.cgi?id=657434
