Gdk: add an experimental backend for mir

This is disabled by default.  Enable with --enable-mir-backend.

This backend is a combined work of Robert Ancell and Ryan Lortie.

gdk/mir/gdkmir.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2014 Canonical Ltd
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_MIR_H__
+#define __GDK_MIR_H__
+
+#include <gdk/gdk.h>
+#include <mir_toolkit/mir_client_library.h>
+
+#define GDK_TYPE_MIR_DISPLAY              (gdk_mir_display_get_type ())
+#define GDK_IS_MIR_DISPLAY(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_MIR_DISPLAY))
+
+#define GDK_TYPE_MIR_WINDOW              (gdk_mir_window_get_type ())
+#define GDK_IS_WINDOW_MIR(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_WINDOW_MIR))
+
+GDK_AVAILABLE_IN_3_10
+GType gdk_mir_display_get_type (void);
+
+GDK_AVAILABLE_IN_3_10
+struct MirConnection *gdk_mir_display_get_mir_connection (GdkDisplay *display);
+
+GDK_AVAILABLE_IN_3_10
+GType gdk_mir_window_get_type (void);
+
+#endif /* __GDK_MIR_H__ */