[mutter] display: Get the backend from the context

[Marge Bot <marge-bot src gnome org>]

commit 36de8baf5540333dab84cad856f85d7d253f1e20
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Apr 27 12:12:33 2022 +0200

    display: Get the backend from the context
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2391>

 .../clutter/clutter-input-pointer-a11y-private.h   |  3 ++-
 clutter/clutter/clutter-input-pointer-a11y.c       |  6 +++--
 clutter/clutter/clutter-main.c                     |  1 -
 src/core/display.c                                 |  2 +-
 src/core/events.c                                  | 30 +++++++++++++++-------
 5 files changed, 28 insertions(+), 14 deletions(-)
---
diff --git a/clutter/clutter/clutter-input-pointer-a11y-private.h 
b/clutter/clutter/clutter-input-pointer-a11y-private.h
index a66ddeac9d..d7f4655012 100644
--- a/clutter/clutter/clutter-input-pointer-a11y-private.h
+++ b/clutter/clutter/clutter-input-pointer-a11y-private.h
@@ -43,7 +43,8 @@ CLUTTER_EXPORT
 gboolean _clutter_is_input_pointer_a11y_enabled  (ClutterInputDevice     *device);
 
 CLUTTER_EXPORT
-void _clutter_input_pointer_a11y_maybe_handle_event (ClutterEvent *event);
+void clutter_input_pointer_a11y_update (ClutterInputDevice *device,
+                                        const ClutterEvent *event);
 
 G_END_DECLS
 
diff --git a/clutter/clutter/clutter-input-pointer-a11y.c b/clutter/clutter/clutter-input-pointer-a11y.c
index cfee58e55f..a74aa4cc22 100644
--- a/clutter/clutter/clutter-input-pointer-a11y.c
+++ b/clutter/clutter/clutter-input-pointer-a11y.c
@@ -730,13 +730,15 @@ _clutter_is_input_pointer_a11y_enabled (ClutterInputDevice *device)
 }
 
 void
-_clutter_input_pointer_a11y_maybe_handle_event (ClutterEvent *event)
+clutter_input_pointer_a11y_update (ClutterInputDevice *device,
+                                   const ClutterEvent *event)
 {
 
-  ClutterInputDevice *device = clutter_event_get_device (event);
   ClutterMainContext *clutter_context;
   ClutterBackend *backend;
 
+  g_return_if_fail (clutter_event_get_device (event) == device);
+
   if (!_clutter_is_input_pointer_a11y_enabled (device))
     return;
 
diff --git a/clutter/clutter/clutter-main.c b/clutter/clutter/clutter-main.c
index a2ee338b66..5b01783e5e 100644
--- a/clutter/clutter/clutter-main.c
+++ b/clutter/clutter/clutter-main.c
@@ -802,7 +802,6 @@ clutter_do_event (ClutterEvent *event)
 
   context->current_event = g_slist_prepend (context->current_event, event);
 
-  _clutter_input_pointer_a11y_maybe_handle_event (event);
   if (_clutter_event_process_filters (event, event_actor))
     {
       context->current_event =
diff --git a/src/core/display.c b/src/core/display.c
index a1c5c2d912..058d09f2a5 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -829,12 +829,12 @@ MetaDisplay *
 meta_display_new (MetaContext  *context,
                   GError      **error)
 {
+  MetaBackend *backend = meta_context_get_backend (context);
   MetaDisplay *display;
   MetaDisplayPrivate *priv;
   int i;
   guint32 timestamp;
   Window old_active_xwindow = None;
-  MetaBackend *backend = meta_get_backend ();
   MetaMonitorManager *monitor_manager;
   MetaSettings *settings;
 
diff --git a/src/core/events.c b/src/core/events.c
index 0dc3a73222..d5a9a93da3 100644
--- a/src/core/events.c
+++ b/src/core/events.c
@@ -61,9 +61,10 @@ typedef enum
 } EventsUnfreezeMethod;
 
 static gboolean
-stage_has_key_focus (void)
+stage_has_key_focus (MetaDisplay *display)
 {
-  MetaBackend *backend = meta_get_backend ();
+  MetaContext *context = meta_display_get_context (display);
+  MetaBackend *backend = meta_context_get_backend (context);
   ClutterActor *stage = meta_backend_get_stage (backend);
 
   return clutter_stage_get_key_focus (CLUTTER_STAGE (stage)) == stage;
@@ -92,7 +93,10 @@ get_window_for_event (MetaDisplay        *display,
 
         /* Always use the key focused window for key events. */
         if (IS_KEY_EVENT (event))
-            return stage_has_key_focus () ? display->focus_window : NULL;
+          {
+            return stage_has_key_focus (display) ? display->focus_window
+                                                 : NULL;
+          }
 
         window_actor = meta_window_actor_from_actor (event_actor);
         if (window_actor)
@@ -112,9 +116,11 @@ get_window_for_event (MetaDisplay        *display,
 }
 
 static void
-handle_idletime_for_event (const ClutterEvent *event)
+handle_idletime_for_event (MetaDisplay        *display,
+                           const ClutterEvent *event)
 {
-  MetaBackend *backend = meta_get_backend ();
+  MetaContext *context = meta_display_get_context (display);
+  MetaBackend *backend = meta_context_get_backend (context);
   MetaIdleManager *idle_manager;
 
   if (clutter_event_get_device (event) == NULL)
@@ -144,7 +150,8 @@ sequence_is_pointer_emulated (MetaDisplay        *display,
     return TRUE;
 
 #ifdef HAVE_NATIVE_BACKEND
-  MetaBackend *backend = meta_get_backend ();
+  MetaContext *context = meta_display_get_context (display);
+  MetaBackend *backend = meta_context_get_backend (context);
 
   /* When using Clutter's native input backend there is no concept of
    * pointer emulating sequence, we still must make up our own to be
@@ -213,7 +220,9 @@ meta_display_handle_event (MetaDisplay        *display,
                            const ClutterEvent *event,
                            ClutterActor       *event_actor)
 {
-  MetaBackend *backend = meta_get_backend ();
+  MetaContext *context = meta_display_get_context (display);
+  MetaBackend *backend = meta_context_get_backend (context);
+  ClutterInputDevice *device;
   MetaWindow *window = NULL;
   gboolean bypass_clutter = FALSE;
   G_GNUC_UNUSED gboolean bypass_wayland = FALSE;
@@ -251,6 +260,9 @@ meta_display_handle_event (MetaDisplay        *display,
         }
     }
 
+  device = clutter_event_get_device (event);
+  clutter_input_pointer_a11y_update (device, event);
+
   sequence = clutter_event_get_event_sequence (event);
 
   /* Set the pointer emulating sequence on touch begin, if eligible */
@@ -312,7 +324,7 @@ meta_display_handle_event (MetaDisplay        *display,
 
   if (event->type != CLUTTER_DEVICE_ADDED &&
       event->type != CLUTTER_DEVICE_REMOVED)
-    handle_idletime_for_event (event);
+    handle_idletime_for_event (display, event);
 
 #ifdef HAVE_WAYLAND
   if (wayland_compositor && event->type == CLUTTER_MOTION)
@@ -398,7 +410,7 @@ meta_display_handle_event (MetaDisplay        *display,
    */
   if (display->event_route == META_EVENT_ROUTE_NORMAL)
     {
-      if (IS_KEY_EVENT (event) && !stage_has_key_focus ())
+      if (IS_KEY_EVENT (event) && !stage_has_key_focus (display))
         {
           bypass_wayland = TRUE;
           goto out;