[mutter] xwayland: Use given X11 display for DnD setup

[Jonas Ådahl <jadahl src gnome org>]

commit bc166aa6b44bd08714cfe42430741a3ad18b8c9c
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Mon Aug 19 15:48:17 2019 +0200

    xwayland: Use given X11 display for DnD setup
    
    Use the provided X11 display instead of poking into GDK to get the X11
    display.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/735

 src/wayland/meta-xwayland-dnd.c     | 8 +++-----
 src/wayland/meta-xwayland-private.h | 4 ++--
 src/wayland/meta-xwayland.c         | 6 ++++--
 3 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/src/wayland/meta-xwayland-dnd.c b/src/wayland/meta-xwayland-dnd.c
index 15f23fbda..3ad58e4d2 100644
--- a/src/wayland/meta-xwayland-dnd.c
+++ b/src/wayland/meta-xwayland-dnd.c
@@ -896,11 +896,10 @@ meta_xwayland_dnd_handle_event (XEvent *xevent)
 }
 
 void
-meta_xwayland_init_dnd (void)
+meta_xwayland_init_dnd (Display *xdisplay)
 {
   MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
   MetaXWaylandManager *manager = &compositor->xwayland_manager;
-  Display *xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
   MetaXWaylandDnd *dnd = manager->dnd;
   XSetWindowAttributes attributes;
   guint32 i, version = XDND_VERSION;
@@ -931,7 +930,7 @@ meta_xwayland_init_dnd (void)
 }
 
 void
-meta_xwayland_shutdown_dnd (void)
+meta_xwayland_shutdown_dnd (Display *xdisplay)
 {
   MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
   MetaXWaylandManager *manager = &compositor->xwayland_manager;
@@ -939,8 +938,7 @@ meta_xwayland_shutdown_dnd (void)
 
   g_assert (dnd != NULL);
 
-  XDestroyWindow (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
-                  dnd->dnd_window);
+  XDestroyWindow (xdisplay, dnd->dnd_window);
   dnd->dnd_window = None;
 
   g_slice_free (MetaXWaylandDnd, dnd);
diff --git a/src/wayland/meta-xwayland-private.h b/src/wayland/meta-xwayland-private.h
index 481cffd22..75cd04715 100644
--- a/src/wayland/meta-xwayland-private.h
+++ b/src/wayland/meta-xwayland-private.h
@@ -36,8 +36,8 @@ void
 meta_xwayland_shutdown (MetaXWaylandManager *manager);
 
 /* wl_data_device/X11 selection interoperation */
-void     meta_xwayland_init_dnd         (void);
-void     meta_xwayland_shutdown_dnd     (void);
+void     meta_xwayland_init_dnd         (Display *xdisplay);
+void     meta_xwayland_shutdown_dnd     (Display *xdisplay);
 gboolean meta_xwayland_dnd_handle_event (XEvent *xevent);
 
 const MetaWaylandDragDestFuncs * meta_xwayland_selection_get_drag_dest_funcs (void);
diff --git a/src/wayland/meta-xwayland.c b/src/wayland/meta-xwayland.c
index 1ba3e00c2..a7b44453a 100644
--- a/src/wayland/meta-xwayland.c
+++ b/src/wayland/meta-xwayland.c
@@ -782,7 +782,9 @@ meta_xwayland_init (MetaXWaylandManager *manager,
 static void
 on_x11_display_closing (MetaDisplay *display)
 {
-  meta_xwayland_shutdown_dnd ();
+  Display *xdisplay = meta_x11_display_get_xdisplay (display->x11_display);
+
+  meta_xwayland_shutdown_dnd (xdisplay);
   g_signal_handlers_disconnect_by_func (display,
                                         on_x11_display_closing,
                                         NULL);
@@ -805,7 +807,7 @@ meta_xwayland_complete_init (MetaDisplay *display,
 
   g_signal_connect (display, "x11-display-closing",
                     G_CALLBACK (on_x11_display_closing), NULL);
-  meta_xwayland_init_dnd ();
+  meta_xwayland_init_dnd (xdisplay);
 
   if (meta_get_x11_display_policy () == META_DISPLAY_POLICY_ON_DEMAND)
     {