[gtk+] dnd: Hide the drag window when we're done

[Matthias Clasen <matthiasc src gnome org>]

commit 068d3826896590dd7ff6e41bee88f07e1416afc9
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Mar 16 16:49:21 2016 -0400

    dnd: Hide the drag window when we're done
    
    We were just relying on the drag context finalize() to destroy
    the window. But with garbage-collected bindings, that might
    not happen as soon as we like, so explicitly hide the window
    when the drag ends successfully.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763659

 gdk/wayland/gdkdnd-wayland.c |   14 ++++++++++++++
 gdk/x11/gdkdnd-x11.c         |    5 ++++-
 2 files changed, 18 insertions(+), 1 deletions(-)
---
diff --git a/gdk/wayland/gdkdnd-wayland.c b/gdk/wayland/gdkdnd-wayland.c
index 2a2bad5..069828d 100644
--- a/gdk/wayland/gdkdnd-wayland.c
+++ b/gdk/wayland/gdkdnd-wayland.c
@@ -446,6 +446,19 @@ gdk_wayland_drag_context_cancel (GdkDragContext      *context,
 }
 
 static void
+gdk_wayland_drag_context_drop_done (GdkDragContext *context,
+                                    gboolean        success)
+{
+  GdkWaylandDragContext *context_wayland = GDK_WAYLAND_DRAG_CONTEXT (context);
+
+  if (success)
+    {
+      if (context_wayland->dnd_window)
+        gdk_window_hide (context_wayland->dnd_window);
+    }
+}
+
+static void
 gdk_wayland_drag_context_class_init (GdkWaylandDragContextClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
@@ -464,6 +477,7 @@ gdk_wayland_drag_context_class_init (GdkWaylandDragContextClass *klass)
   context_class->get_selection = gdk_wayland_drag_context_get_selection;
   context_class->get_drag_window = gdk_wayland_drag_context_get_drag_window;
   context_class->set_hotspot = gdk_wayland_drag_context_set_hotspot;
+  context_class->drop_done = gdk_wayland_drag_context_drop_done;
   context_class->manage_dnd = gdk_wayland_drag_context_manage_dnd;
   context_class->set_cursor = gdk_wayland_drag_context_set_cursor;
   context_class->action_changed = gdk_wayland_drag_context_action_changed;
diff --git a/gdk/x11/gdkdnd-x11.c b/gdk/x11/gdkdnd-x11.c
index eceb8e9..c2a6919 100644
--- a/gdk/x11/gdkdnd-x11.c
+++ b/gdk/x11/gdkdnd-x11.c
@@ -2616,7 +2616,10 @@ gdk_x11_drag_context_drop_done (GdkDragContext *context,
   cairo_t *cr;
 
   if (success)
-    return;
+    {
+      gdk_window_hide (x11_context->drag_window);
+      return;
+    }
 
   win_surface = _gdk_window_ref_cairo_surface (x11_context->drag_window);
   surface = gdk_window_create_similar_surface (x11_context->drag_window,