Merge branch 'x11-dnd-fixes' into 'master'

X11 dnd fixes

See merge request GNOME/gtk!1464

gdk/gdksurface.c

@@ -3587,6 +3587,10 @@ gdk_surface_register_dnd (GdkSurface *surface)
  * probably want to set up the drag icon using the surface returned
  * by gdk_drag_get_drag_surface().
  *
+ * This function returns a reference to the GdkDrag object, but GTK
+ * keeps its own reference as well, as long as the DND operation is
+ * going on.
+ *
  * Note: if @actions include %GDK_ACTION_MOVE, you need to listen for
  * the #GdkDrag::dnd-finished signal and delete the data at the source
  * if gdk_drag_get_selected_action() returns %GDK_ACTION_MOVE.

gdk/x11/gdkdrag-x11.c

@@ -900,16 +900,12 @@ gdk_x11_drag_handle_finished (GdkDisplay   *display,
 
   if (drag)
     {
-      g_object_ref (drag);
-
       drag_x11 = GDK_X11_DRAG (drag);
       if (drag_x11->version == 5)
         drag_x11->drop_failed = xevent->xclient.data.l[1] == 0;
 
       g_signal_emit_by_name (drag, "dnd-finished");
       gdk_drag_drop_done (drag, !drag_x11->drop_failed);
-
-      g_object_unref (drag);
     }
 }
 
@@ -1714,8 +1710,8 @@ gdk_x11_drag_default_output_handler (GOutputStream   *stream,
 
 static gboolean
 gdk_x11_drag_xevent (GdkDisplay   *display,
-                             const XEvent *xevent,
-                             gpointer      data)
+                     const XEvent *xevent,
+                     gpointer      data)
 {
   GdkDrag *drag = GDK_DRAG (data);
   GdkX11Drag *x11_drag = GDK_X11_DRAG (drag);
@@ -1876,8 +1872,8 @@ gdk_x11_drag_release_selection (GdkDrag *drag)
 }
 
 static void
-gdk_x11_drag_drop_done (GdkDrag *drag,
-                                gboolean        success)
+gdk_x11_drag_drop_done (GdkDrag  *drag,
+                        gboolean  success)
 {
   GdkX11Drag *x11_drag = GDK_X11_DRAG (drag);
   GdkDragAnim *anim;
@@ -1896,6 +1892,7 @@ gdk_x11_drag_drop_done (GdkDrag *drag,
   if (success)
     {
       gdk_surface_hide (x11_drag->drag_surface);
+      g_object_unref (drag);
       return;
     }
 
@@ -1928,6 +1925,7 @@ gdk_x11_drag_drop_done (GdkDrag *drag,
                            gdk_drag_anim_timeout, anim,
                            (GDestroyNotify) gdk_drag_anim_destroy);
   g_source_set_name_by_id (id, "[gtk] gdk_drag_anim_timeout");
+  g_object_unref (drag);
 }
 
 static gboolean
@@ -2072,13 +2070,15 @@ _gdk_x11_surface_drag_begin (GdkSurface         *surface,
                                    NULL);
   x11_drag = GDK_X11_DRAG (drag);
 
-  g_signal_connect (display, "xevent", G_CALLBACK (gdk_x11_drag_xevent), drag);
-
   precache_target_list (drag);
 
   gdk_device_get_position (device, &px, &py);
-  x_root = round (px) + dx;
-  y_root = round (py) + dy;
+
+  gdk_x11_surface_get_root_coords (surface,
+                                   round (px) + dx,
+                                   round (py) + dy,
+                                   &x_root,
+                                   &y_root);
 
   x11_drag->start_x = x_root;
   x11_drag->start_y = y_root;
@@ -2099,7 +2099,7 @@ _gdk_x11_surface_drag_begin (GdkSurface         *surface,
       g_object_unref (drag);
       return NULL;
     }
-  
+ 
   move_drag_surface (drag, x_root, y_root);
 
   x11_drag->timestamp = gdk_display_get_last_seen_time (display);
@@ -2115,6 +2115,11 @@ _gdk_x11_surface_drag_begin (GdkSurface         *surface,
       return NULL;
     }
 
+  
+  g_signal_connect_object (display, "xevent", G_CALLBACK (gdk_x11_drag_xevent), drag, 0);
+  /* backend holds a ref until gdk_drag_drop_done is called */
+  g_object_ref (drag);
+
   return drag;
 }
 

gdk/x11/gdkprivate-x11.h

@@ -230,6 +230,12 @@ GdkDrag        * _gdk_x11_surface_drag_begin (GdkSurface          *window,
                                               gint                dx,
                                               gint                dy);
 
+void gdk_x11_surface_get_root_coords (GdkSurface *surface,
+                                      gint        x,
+                                      gint        y,
+                                      gint       *root_x,
+                                      gint       *root_y);
+
 GdkGrabStatus _gdk_x11_convert_grab_status (gint status);
 
 cairo_surface_t * _gdk_x11_display_create_bitmap_surface (GdkDisplay *display,

gdk/x11/gdksurface-x11.c

@@ -2402,7 +2402,7 @@ gdk_x11_surface_get_geometry (GdkSurface *surface,
     }
 }
 
-static void
+void
 gdk_x11_surface_get_root_coords (GdkSurface *surface,
 				gint       x,
 				gint       y,