wip: Split off GdkWaylandPopup

Like the GdkWaylandToplevel split-off, this needs some
more cleanup.

gdk/wayland/gdkpopup-wayland-private.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2022 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+
+void update_popup_layout_state (GdkWaylandPopup *wayland_popup,
+                                int              x,
+                                int              y,
+                                int              width,
+                                int              height,
+                                GdkPopupLayout  *layout);
+
+void configure_popup_geometry                     (GdkWaylandPopup *popup);
+void gdk_wayland_surface_configure_popup          (GdkWaylandPopup *popup);
+void frame_callback_popup                         (GdkWaylandPopup *popup);
+void gdk_wayland_popup_hide_surface               (GdkWaylandPopup *popup);
+

gdk/wayland/gdksurface-wayland-private.h

@@ -98,6 +98,17 @@ void gdk_wayland_surface_update_size       (GdkSurface *surface,
 void gdk_wayland_surface_create_xdg_surface_resources (GdkSurface *surface);
 void _gdk_wayland_surface_save_size (GdkSurface *surface);
 
+void gdk_wayland_surface_hide_surface (GdkSurface *surface);
+void gdk_wayland_surface_move_resize (GdkSurface *surface,
+                                      int         x,
+                                      int         y,
+                                      int         width,
+                                      int         height);
+void gdk_wayland_surface_get_window_geometry (GdkSurface   *surface,
+                                              GdkRectangle *geometry);
+void gdk_wayland_surface_freeze_state (GdkSurface *surface);
+void gdk_wayland_surface_thaw_state   (GdkSurface *surface);
+
 
 #define GDK_TYPE_WAYLAND_DRAG_SURFACE (gdk_wayland_drag_surface_get_type ())
 GType gdk_wayland_drag_surface_get_type (void) G_GNUC_CONST;

gdk/wayland/meson.build

@@ -17,6 +17,7 @@ gdk_wayland_sources = files([
   'gdkprimary-wayland.c',
   'gdksurface-wayland.c',
   'gdktoplevel-wayland.c',
+  'gdkpopup-wayland.c',
   'gdkvulkancontext-wayland.c',
   'wm-button-layout-translation.c',
 ])

gtk/gtkwindow.c

@@ -93,6 +93,7 @@
 #include "wayland/gdkwayland.h"
 #include "wayland/gdkdisplay-wayland.h"
 #include "wayland/gdksurface-wayland.h"
+#include "wayland/gdktoplevel-wayland-private.h"
 #endif
 
 #ifdef GDK_WINDOWING_MACOS