wayland: Move surface check to MetaWaylandSurface

Allows dropping various HAVE_XWAYLAND ifdef as the function would always
return false if Mutter is built without XWayland

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2445>

src/wayland/meta-wayland-cursor-surface.c

@@ -92,8 +92,7 @@ cursor_sprite_prepare_at (MetaCursorSprite         *cursor_sprite,
   MetaWaylandSurfaceRole *role = META_WAYLAND_SURFACE_ROLE (cursor_surface);
   MetaWaylandSurface *surface = meta_wayland_surface_role_get_surface (role);
 
-#ifdef HAVE_XWAYLAND
-  if (!meta_xwayland_is_xwayland_surface (surface))
+  if (!meta_wayland_surface_is_xwayland (surface))
     {
       MetaWaylandSurfaceRole *surface_role =
         META_WAYLAND_SURFACE_ROLE (cursor_surface);
@@ -123,7 +122,6 @@ cursor_sprite_prepare_at (MetaCursorSprite         *cursor_sprite,
                                                     surface->buffer_transform);
         }
     }
-#endif
 
   meta_wayland_surface_update_outputs (surface);
 }

src/wayland/meta-wayland-pointer-constraints.c

@@ -193,7 +193,7 @@ surface_constraint_data_new (MetaWaylandSurface *surface)
       connect_window (data, window);
     }
 #ifdef HAVE_XWAYLAND
-  else if (meta_xwayland_is_xwayland_surface (surface))
+  else if (meta_wayland_surface_is_xwayland (surface))
     {
       data->window_associated_handler_id =
         g_signal_connect (surface->role, "window-associated",
@@ -475,7 +475,7 @@ should_constraint_be_enabled (MetaWaylandPointerConstraint *constraint)
        * For subsurfaces the window of the ancestor might be gone already.
        */
 #ifdef HAVE_XWAYLAND
-      g_warn_if_fail (meta_xwayland_is_xwayland_surface (constraint->surface) ||
+      g_warn_if_fail (meta_wayland_surface_is_xwayland (constraint->surface) ||
                       META_IS_WAYLAND_SUBSURFACE (constraint->surface->role));
 #endif
       return FALSE;
@@ -488,8 +488,7 @@ should_constraint_be_enabled (MetaWaylandPointerConstraint *constraint)
   if (constraint->seat->pointer->focus_surface != constraint->surface)
     return FALSE;
 
-#ifdef HAVE_XWAYLAND
-  if (meta_xwayland_is_xwayland_surface (constraint->surface))
+  if (meta_wayland_surface_is_xwayland (constraint->surface))
     {
       MetaDisplay *display = meta_window_get_display (window);
 
@@ -511,7 +510,6 @@ should_constraint_be_enabled (MetaWaylandPointerConstraint *constraint)
           display->focus_window->client_type != META_WINDOW_CLIENT_TYPE_X11)
         return FALSE;
     }
-#endif
 
   if (!meta_window_appears_focused (window))
     return FALSE;
@@ -632,9 +630,7 @@ meta_wayland_pointer_constraint_calculate_effective_region (MetaWaylandPointerCo
       MetaFrame *frame = window->frame;
       int actual_width, actual_height;
 
-#ifdef HAVE_XWAYLAND
-      g_assert (meta_xwayland_is_xwayland_surface (constraint->surface));
-#endif
+      g_assert (meta_wayland_surface_is_xwayland (constraint->surface));
 
       actual_width = window->buffer_rect.width - (frame->child_x +
                                                   frame->right_width);

src/wayland/meta-wayland-surface.c

@@ -2396,3 +2396,17 @@ meta_wayland_surface_get_compositor (MetaWaylandSurface *surface)
 {
   return surface->compositor;
 }
+
+gboolean
+meta_wayland_surface_is_xwayland (MetaWaylandSurface *surface)
+{
+#ifdef HAVE_XWAYLAND
+  MetaWaylandCompositor *compositor = surface->compositor;
+  MetaXWaylandManager *manager = &compositor->xwayland_manager;
+
+  return surface->resource != NULL &&
+         wl_resource_get_client (surface->resource) == manager->client;
+#else
+  return FALSE;
+#endif
+}

src/wayland/meta-wayland-surface.h

@@ -419,6 +419,7 @@ meta_wayland_surface_state_new (void)
 {
   return g_object_new (META_TYPE_WAYLAND_SURFACE_STATE, NULL);
 }
+gboolean meta_wayland_surface_is_xwayland (MetaWaylandSurface *surface);
 
 static inline GNode *
 meta_get_next_subsurface_sibling (GNode *n)

src/wayland/meta-xwayland-dnd.c

@@ -1033,7 +1033,7 @@ meta_xwayland_dnd_handle_xfixes_selection_notify (MetaWaylandCompositor *composi
   focus = compositor->seat->pointer->focus_surface;
 
   if (event->owner != None && event->owner != x11_display->selection.xwindow &&
-      focus && meta_xwayland_is_xwayland_surface (focus))
+      focus && meta_wayland_surface_is_xwayland (focus))
     {
       dnd->source = meta_wayland_data_source_xwayland_new (dnd, compositor);
       meta_wayland_data_device_set_dnd_source (&compositor->seat->data_device,

src/wayland/meta-xwayland.c

@@ -146,16 +146,6 @@ meta_xwayland_handle_wl_surface_id (MetaWindow *window,
     }
 }
 
-gboolean
-meta_xwayland_is_xwayland_surface (MetaWaylandSurface *surface)
-{
-  MetaWaylandCompositor *compositor = surface->compositor;
-  MetaXWaylandManager *manager = &compositor->xwayland_manager;
-
-  return surface->resource != NULL &&
-         wl_resource_get_client (surface->resource) == manager->client;
-}
-
 static gboolean
 try_display (int      display,
              char   **filename_out,

src/wayland/meta-xwayland.h

@@ -39,9 +39,6 @@ void
 meta_xwayland_handle_wl_surface_id (MetaWindow *window,
                                     guint32     surface_id);
 
-gboolean
-meta_xwayland_is_xwayland_surface (MetaWaylandSurface *surface);
-
 void
 meta_xwayland_handle_xwayland_grab (MetaWindow *window,
                                     gboolean    allow);