[gtk+] mir: implement stub _gdk_mir_keymap_key_is_modifier

[William Hua <williamhua src gnome org>]

commit 54f9263f19fe076dbc373cb4aea3d59c83e12b9f
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Tue Dec 2 17:08:00 2014 +0100

    mir: implement stub _gdk_mir_keymap_key_is_modifier
    
    Using IsModifierKey for now

 gdk/mir/gdkmir-private.h    |    2 ++
 gdk/mir/gdkmireventsource.c |   11 ++++++-----
 gdk/mir/gdkmirkeymap.c      |   14 ++++++++++++++
 3 files changed, 22 insertions(+), 5 deletions(-)
---
diff --git a/gdk/mir/gdkmir-private.h b/gdk/mir/gdkmir-private.h
index 9361b72..7654e08 100644
--- a/gdk/mir/gdkmir-private.h
+++ b/gdk/mir/gdkmir-private.h
@@ -69,6 +69,8 @@ GdkDevice *_gdk_mir_device_manager_get_keyboard (GdkDeviceManager *device_manage
 
 GdkKeymap *_gdk_mir_keymap_new (void);
 
+gboolean _gdk_mir_keymap_key_is_modifier (GdkKeymap *keymap, guint keycode);
+
 GdkDevice *_gdk_mir_keyboard_new (GdkDeviceManager *device_manager, const gchar *name);
 
 GdkDevice *_gdk_mir_pointer_new (GdkDeviceManager *device_manager, const gchar *name);
diff --git a/gdk/mir/gdkmireventsource.c b/gdk/mir/gdkmireventsource.c
index 3f7d9b2..9e317bc 100644
--- a/gdk/mir/gdkmireventsource.c
+++ b/gdk/mir/gdkmireventsource.c
@@ -17,7 +17,6 @@
 
 #include "config.h"
 
-#include <xkbcommon/xkbcommon.h>
 #include "gdkinternals.h"
 #include "gdkdisplayprivate.h"
 #include "gdkmir.h"
@@ -251,23 +250,25 @@ static void
 handle_key_event (GdkWindow *window, const MirKeyEvent *event)
 {
   GdkMirWindowImpl *impl = GDK_MIR_WINDOW_IMPL (window->impl);
+  GdkKeymap *keymap;
   guint modifier_state;
   MirMotionButton button_state;
 
-  _gdk_mir_window_impl_get_cursor_state (impl, NULL, NULL, NULL, &button_state);
-  modifier_state = get_modifier_state (event->modifiers, button_state);
-
   switch (event->action)
     {
     case mir_key_action_down:
     case mir_key_action_up:
       // FIXME: Convert keycode
+      _gdk_mir_window_impl_get_cursor_state (impl, NULL, NULL, NULL, &button_state);
+      modifier_state = get_modifier_state (event->modifiers, button_state);
+      keymap = gdk_keymap_get_for_display (gdk_window_get_display (window));
+
       generate_key_event (window,
                           event->action == mir_key_action_down ? GDK_KEY_PRESS : GDK_KEY_RELEASE,
                           modifier_state,
                           event->key_code,
                           event->scan_code,
-                          IsModifierKey (event->key_code),
+                          _gdk_mir_keymap_key_is_modifier (keymap, event->key_code),
                           NANO_TO_MILLI (event->event_time));
       break;
     default:
diff --git a/gdk/mir/gdkmirkeymap.c b/gdk/mir/gdkmirkeymap.c
index 3e8c829..8397db2 100644
--- a/gdk/mir/gdkmirkeymap.c
+++ b/gdk/mir/gdkmirkeymap.c
@@ -31,6 +31,12 @@ typedef struct GdkMirKeymapClass GdkMirKeymapClass;
 #define GDK_IS_MIR_KEYMAP_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_MIR_KEYMAP))
 #define GDK_MIR_KEYMAP_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_MIR_KEYMAP, 
GdkMirKeymapClass))
 
+#define IsModifierKey(keysym) \
+  ((keysym >= XKB_KEY_Shift_L && keysym <= XKB_KEY_Hyper_R) || \
+   (keysym >= XKB_KEY_ISO_Lock && keysym <= XKB_KEY_ISO_Last_Group_Lock) || \
+   (keysym == XKB_KEY_Mode_switch) || \
+   (keysym == XKB_KEY_Num_Lock))
+
 struct GdkMirKeymap
 {
   GdkKeymap parent_instance;
@@ -342,6 +348,14 @@ gdk_mir_keymap_get_modifier_state (GdkKeymap *keymap)
   return get_gdk_modifiers (mir_keymap->xkb_keymap, mods);
 }
 
+gboolean
+_gdk_mir_keymap_key_is_modifier (GdkKeymap *keymap,
+                                 guint      keycode)
+{
+  // FIXME: use xkb_state
+  return IsModifierKey (keycode);
+}
+
 static void
 update_direction (GdkMirKeymap *keymap)
 {