[gnome-shell/wip/wayland: 48/53] ShellGlobal: repurpose the stage_gdk_window as the IBus window

[Giovanni Campagna <gcampagna src gnome org>]

commit aa8a81781a340638b0a2299fc0a723e506e23063
Author: Giovanni Campagna <gcampagn redhat com>
Date:   Wed Sep 11 17:44:24 2013 +0200

    ShellGlobal: repurpose the stage_gdk_window as the IBus window
    
    And use it directly in the IBus event handling (by pushing it down
    to StIMText)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707467

 src/shell-global.c  |   19 ++++++++-----------
 src/st/st-im-text.c |   30 ++++++++++--------------------
 src/st/st-im-text.h |    2 ++
 3 files changed, 20 insertions(+), 31 deletions(-)
---
diff --git a/src/shell-global.c b/src/shell-global.c
index 1d0dadc..65994ec 100644
--- a/src/shell-global.c
+++ b/src/shell-global.c
@@ -52,7 +52,7 @@ struct _ShellGlobal {
 
   ClutterStage *stage;
   Window stage_xwindow;
-  GdkWindow *stage_gdk_window;
+  GdkWindow *ibus_window;
 
   MetaDisplay *meta_display;
   GdkDisplay *gdk_display;
@@ -793,13 +793,9 @@ gnome_shell_gdk_event_handler (GdkEvent *event_gdk,
 {
   if (event_gdk->type == GDK_KEY_PRESS || event_gdk->type == GDK_KEY_RELEASE)
     {
-      ClutterActor *stage;
-      Window stage_xwindow;
+      ShellGlobal *global = data;
 
-      stage = CLUTTER_ACTOR (data);
-      stage_xwindow = clutter_x11_get_stage_window (CLUTTER_STAGE (stage));
-
-      if (GDK_WINDOW_XID (event_gdk->key.window) == stage_xwindow)
+      if (event_gdk->key.window == global->ibus_window)
         {
           ClutterDeviceManager *device_manager = clutter_device_manager_get_default ();
           ClutterInputDevice *keyboard = clutter_device_manager_get_core_device (device_manager,
@@ -809,7 +805,7 @@ gnome_shell_gdk_event_handler (GdkEvent *event_gdk,
                                                            CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE);
           event_clutter->key.time = event_gdk->key.time;
           event_clutter->key.flags = CLUTTER_EVENT_NONE;
-          event_clutter->key.stage = CLUTTER_STAGE (stage);
+          event_clutter->key.stage = CLUTTER_STAGE (global->stage);
           event_clutter->key.source = NULL;
 
           /* This depends on ClutterModifierType and GdkModifierType being
@@ -852,8 +848,9 @@ _shell_global_set_plugin (ShellGlobal *global,
 
   global->stage = CLUTTER_STAGE (meta_get_stage_for_screen (global->meta_screen));
   global->stage_xwindow = clutter_x11_get_stage_window (global->stage);
-  global->stage_gdk_window = gdk_x11_window_foreign_new_for_display (global->gdk_display,
-                                                                     global->stage_xwindow);
+  global->ibus_window = gdk_x11_window_foreign_new_for_display (global->gdk_display,
+                                                                global->stage_xwindow);
+  st_im_text_set_event_window (global->ibus_window);
 
   g_signal_connect (global->stage, "notify::width",
                     G_CALLBACK (global_stage_notify_width), global);
@@ -882,7 +879,7 @@ _shell_global_set_plugin (ShellGlobal *global,
   g_signal_connect (global->meta_display, "notify::focus-window",
                     G_CALLBACK (focus_window_changed), global);
 
-  gdk_event_handler_set (gnome_shell_gdk_event_handler, global->stage, NULL);
+  gdk_event_handler_set (gnome_shell_gdk_event_handler, global, NULL);
 
   global->focus_manager = st_focus_manager_get_for_stage (global->stage);
 }
diff --git a/src/st/st-im-text.c b/src/st/st-im-text.c
index 624a067..5666e7a 100644
--- a/src/st/st-im-text.c
+++ b/src/st/st-im-text.c
@@ -41,7 +41,6 @@
 #endif
 
 #include <clutter/clutter.h>
-#include <clutter/x11/clutter-x11.h>
 #include <glib.h>
 #include <gtk/gtk.h>
 #include <gdk/gdkkeysyms.h>
@@ -203,25 +202,14 @@ st_im_text_get_paint_volume (ClutterActor       *self,
   return clutter_paint_volume_set_from_allocation (volume, self);
 }
 
-/* Returns a new reference to window */
-static GdkWindow *
-window_for_actor (ClutterActor *actor)
-{
-  GdkDisplay *display = gdk_display_get_default ();
-  ClutterActor *stage;
-  Window xwindow;
-  GdkWindow *window;
-
-  stage = clutter_actor_get_stage (actor);
-  xwindow = clutter_x11_get_stage_window ((ClutterStage *)stage);
+static GdkWindow *event_window;
 
-  window = gdk_x11_window_lookup_for_display (display, xwindow);
-  if (window)
-    g_object_ref (window);
-  else
-    window = gdk_x11_window_foreign_new_for_display (display, xwindow);
+void
+st_im_text_set_event_window (GdkWindow *window)
+{
+  g_assert (event_window == NULL);
 
-  return window;
+  event_window = window;
 }
 
 static void
@@ -229,7 +217,8 @@ st_im_text_realize (ClutterActor *actor)
 {
   StIMTextPrivate *priv = ST_IM_TEXT (actor)->priv;
 
-  priv->window = window_for_actor (actor);
+  g_assert (event_window != NULL);
+  priv->window = g_object_ref (event_window);
   gtk_im_context_set_client_window (priv->im_context, priv->window);
 }
 
@@ -291,7 +280,8 @@ key_event_to_gdk (ClutterKeyEvent *event_clutter)
   event_gdk = (GdkEventKey *)gdk_event_new ((event_clutter->type == CLUTTER_KEY_PRESS) ?
                                             GDK_KEY_PRESS : GDK_KEY_RELEASE);
 
-  event_gdk->window = window_for_actor ((ClutterActor *)event_clutter->stage);
+  g_assert (event_window != NULL);
+  event_gdk->window = g_object_ref (event_window);
   event_gdk->send_event = FALSE;
   event_gdk->time = event_clutter->time;
   /* This depends on ClutterModifierType and GdkModifierType being
diff --git a/src/st/st-im-text.h b/src/st/st-im-text.h
index e675c34..c97975a 100644
--- a/src/st/st-im-text.h
+++ b/src/st/st-im-text.h
@@ -68,6 +68,8 @@ void            st_im_text_set_input_hints   (StIMText       *imtext,
                                               GtkInputHints   hints);
 GtkInputHints   st_im_text_get_input_hints   (StIMText       *imtext);
 
+void            st_im_text_set_event_window  (GdkWindow      *window);
+
 G_END_DECLS
 
 #endif /* __ST_IM_TEXT_H__ */