core: Add helper code to handle input events

These will be used with every input event out there so they're
dealt with uniformly.

src/core/input-events.h

@@ -0,0 +1,64 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/**
+ * \file event.h  Utility functions for handling events
+ *
+ * Handling events.
+ * This file contains helper methods to handle events, specially
+ * input events, which can be either core or XInput2.
+ */
+
+/*
+ * Copyright (C) 2011 Carlos Garnacho
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_EVENT_H
+#define META_EVENT_H
+
+#include <config.h>
+#include <X11/Xlib.h>
+#include "display-private.h"
+
+
+gboolean meta_input_event_get_type          (MetaDisplay *display,
+                                             XEvent      *ev,
+                                             guint       *ev_type);
+
+Window   meta_input_event_get_window        (MetaDisplay *display,
+                                             XEvent      *ev);
+Window   meta_input_event_get_root_window   (MetaDisplay *display,
+                                             XEvent      *ev);
+
+Time     meta_input_event_get_time          (MetaDisplay *display,
+                                             XEvent      *ev);
+
+gboolean meta_input_event_get_coordinates   (MetaDisplay *display,
+                                             XEvent      *ev,
+                                             gdouble     *x_ret,
+                                             gdouble     *y_ret,
+                                             gdouble     *x_root_ret,
+                                             gdouble     *y_root_ret);
+
+gboolean meta_input_event_get_state         (MetaDisplay *display,
+                                             XEvent      *ev,
+                                             guint       *state);
+gboolean meta_input_event_get_keycode       (MetaDisplay *display,
+                                             XEvent      *ev,
+                                             guint       *keycode);
+
+#endif /* META_EVENT_H */