[mutter] Add meta_key_binding_is_reversed()

[Christophe Fergeau <teuf src gnome org>]

commit c5c6b2257f6725e8ef100fa810050c714f4b4ba1
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Thu May 29 20:38:13 2014 +0200

    Add meta_key_binding_is_reversed()
    
    MetaKeyBinding can be marked as being reversed
    (META_KEY_BINDING_IS_REVERSED), but MetaKeyHandlerFunc callbacks
    cannot check whether this flag was set or not on the MetaKeyBinding
    which triggered the callback.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732295

 src/core/keybindings.c |   10 ++++++++--
 src/meta/keybindings.h |    2 ++
 2 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index 6c74635..089b582 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -101,6 +101,12 @@ meta_key_binding_get_modifiers (MetaKeyBinding *binding)
   return binding->modifiers;
 }
 
+gboolean
+meta_key_binding_is_reversed (MetaKeyBinding *binding)
+{
+  return (binding->handler->flags & META_KEY_BINDING_IS_REVERSED) != 0;
+}
+
 guint
 meta_key_binding_get_mask (MetaKeyBinding *binding)
 {
@@ -2970,7 +2976,7 @@ handle_switch (MetaDisplay     *display,
                MetaKeyBinding  *binding,
                gpointer         dummy)
 {
-  gint backwards = (binding->handler->flags & META_KEY_BINDING_IS_REVERSED) != 0;
+  gboolean backwards = meta_key_binding_is_reversed (binding);
   do_choose_window (display, screen, event_window, event, binding, backwards);
 }
 
@@ -2982,7 +2988,7 @@ handle_cycle (MetaDisplay     *display,
               MetaKeyBinding  *binding,
               gpointer         dummy)
 {
-  gint backwards = (binding->handler->flags & META_KEY_BINDING_IS_REVERSED) != 0;
+  gboolean backwards = meta_key_binding_is_reversed (binding);
   do_choose_window (display, screen, event_window, event, binding, backwards);
 }
 
diff --git a/src/meta/keybindings.h b/src/meta/keybindings.h
index 4eeb27e..679bd20 100644
--- a/src/meta/keybindings.h
+++ b/src/meta/keybindings.h
@@ -27,6 +27,8 @@ const char          *meta_key_binding_get_name      (MetaKeyBinding *binding);
 MetaVirtualModifier  meta_key_binding_get_modifiers (MetaKeyBinding *binding);
 guint                meta_key_binding_get_mask      (MetaKeyBinding *binding);
 gboolean             meta_key_binding_is_builtin    (MetaKeyBinding *binding);
+gboolean             meta_key_binding_is_reversed   (MetaKeyBinding *binding);
+
 
 gboolean meta_keybindings_set_custom_handler (const gchar        *name,
                                              MetaKeyHandlerFunc  handler,