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compositor: Setup and use ownership chains

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As with the backend commit, this means all objects can reach the
MetaContext by walking up the chain, thus can e.g. get the backend from
the context, instead of the global singleton.

This also is a squashed commit containing:

compositor: Get backend via the context

The MetaCompositor instance is owned by MetaDisplay, which is owned by
MetaContext. Get the backend via that chain of ownership.

dnd: Don't get backend from singleton

window-actor: Don't get backend from singleton

dnd: Don't get Wayland compositor via singleton

background: Don't get the monitor manager from the singleton

plugins: Don't get backend from singleton

This applies to MetaPlugin, it's manager class, and the default plugin.

feedback-actor: Pass a compositor pointer when constructing

This allows getting to the display.

later: Keep a pointer to the manager object

This allows using the non-singleton API in idle callbacks.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2718>
This commit is contained in:
Jonas Ådahl 2022-05-27 22:17:13 +02:00 committed by Robert Mader
parent 4cc5e6d2bd
commit 5e67e35ec5
16 changed files with 196 additions and 59 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/backends/meta-backend.c
View file

@ -67,6 +67,7 @@
#include "backends/x11/meta-backend-x11.h"
#include "clutter/clutter-mutter.h"
#include "clutter/clutter-seat-private.h"
#include "compositor/meta-dnd-private.h"
#include "core/meta-context-private.h"
#include "meta/main.h"
#include "meta/meta-backend.h"
@ -1210,7 +1211,7 @@ meta_backend_initable_init (GInitable *initable,
priv->cursor_tracker =
META_BACKEND_GET_CLASS (backend)->create_cursor_tracker (backend);
priv->dnd = g_object_new (META_TYPE_DND, NULL);
priv->dnd = meta_dnd_new (backend);
priv->cancellable = g_cancellable_new ();
g_bus_get (G_BUS_TYPE_SYSTEM,

9
src/compositor/compositor.c
View file

@ -376,10 +376,11 @@ meta_compositor_grab_end (MetaCompositor *compositor)
}
static void
redirect_windows (MetaX11Display *x11_display)
redirect_windows (MetaCompositor *compositor,
MetaX11Display *x11_display)
{
MetaBackend *backend = meta_get_backend ();
MetaContext *context = meta_backend_get_context (backend);
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
Display *xdisplay = meta_x11_display_get_xdisplay (x11_display);
Window xroot = meta_x11_display_get_xroot (x11_display);
int screen_number = meta_x11_display_get_screen_number (x11_display);
@ -427,7 +428,7 @@ meta_compositor_redirect_x11_windows (MetaCompositor *compositor)
MetaDisplay *display = priv->display;
if (display->x11_display)
redirect_windows (display->x11_display);
redirect_windows (compositor, display->x11_display);
}
static MetaCompositorView *

7
src/compositor/meta-background.c
View file

@ -316,8 +316,11 @@ meta_background_finalize (GObject *object)
static void
meta_background_constructed (GObject *object)
{
MetaBackground *self = META_BACKGROUND (object);
MetaMonitorManager *monitor_manager = meta_monitor_manager_get ();
MetaBackground *self = META_BACKGROUND (object);
MetaContext *context = meta_display_get_context (self->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
G_OBJECT_CLASS (meta_background_parent_class)->constructed (object);

13
src/compositor/meta-compositor-x11.c
View file

@ -141,10 +141,11 @@ meta_compositor_x11_manage (MetaCompositor *compositor,
{
MetaCompositorX11 *compositor_x11 = META_COMPOSITOR_X11 (compositor);
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaX11Display *x11_display = display->x11_display;
Display *xdisplay = meta_x11_display_get_xdisplay (x11_display);
int composite_version;
MetaBackend *backend = meta_get_backend ();
Window xwindow;
if (!META_X11_DISPLAY_HAS_COMPOSITE (x11_display) ||
@ -446,7 +447,10 @@ meta_compositor_x11_monotonic_to_high_res_xserver_time (MetaCompositor *composit
static void
meta_compositor_x11_grab_begin (MetaCompositor *compositor)
{
MetaBackendX11 *backend_x11 = META_BACKEND_X11 (meta_get_backend ());
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaBackendX11 *backend_x11 = META_BACKEND_X11 (backend);
meta_backend_x11_sync_pointer (backend_x11);
}
@ -454,7 +458,10 @@ meta_compositor_x11_grab_begin (MetaCompositor *compositor)
static void
meta_compositor_x11_grab_end (MetaCompositor *compositor)
{
MetaBackendX11 *backend_x11 = META_BACKEND_X11 (meta_get_backend ());
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaBackendX11 *backend_x11 = META_BACKEND_X11 (backend);
meta_backend_x11_sync_pointer (backend_x11);
}

7
src/compositor/meta-dnd-actor-private.h
View file

@ -38,9 +38,10 @@ G_DECLARE_FINAL_TYPE (MetaDnDActor,
MetaFeedbackActor)
ClutterActor *meta_dnd_actor_new (ClutterActor *drag_origin,
int start_x,
int start_y);
ClutterActor *meta_dnd_actor_new (MetaCompositor *compositor,
ClutterActor *drag_origin,
int start_x,
int start_y);
void meta_dnd_actor_drag_finish (MetaDnDActor *self,
gboolean success);

8
src/compositor/meta-dnd-actor.c
View file

@ -155,13 +155,15 @@ meta_dnd_actor_init (MetaDnDActor *self)
* Return value: the newly created background actor
*/
ClutterActor *
meta_dnd_actor_new (ClutterActor *drag_origin,
int drag_start_x,
int drag_start_y)
meta_dnd_actor_new (MetaCompositor *compositor,
ClutterActor *drag_origin,
int drag_start_x,
int drag_start_y)
{
MetaDnDActor *self;
self = g_object_new (META_TYPE_DND_ACTOR,
"compositor", compositor,
"drag-origin", drag_origin,
"drag-start-x", drag_start_x,
"drag-start-y", drag_start_y,

28
src/compositor/meta-dnd-private.h Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright (C) 2022 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef META_DND_PRIVATE_H
#define META_DND_PRIVATE_H
#include "backends/meta-backend-types.h"
#include "meta/meta-dnd.h"
MetaDnd * meta_dnd_new (MetaBackend *backend);
MetaBackend * meta_dnd_get_backend (MetaDnd *dnd);
#endif /* META_DND_PRIVATE_H */

74
src/compositor/meta-dnd.c
View file

@ -19,6 +19,8 @@
#include "config.h"
#include "compositor/meta-dnd-private.h"
#include <gdk/gdkx.h>
#include "meta/meta-backend.h"
@ -28,7 +30,6 @@
#include "backends/x11/meta-backend-x11.h"
#include "backends/x11/meta-clutter-backend-x11.h"
#include "backends/x11/meta-stage-x11.h"
#include "meta/meta-dnd.h"
#include "x11/meta-x11-display-private.h"
struct _MetaDndClass
@ -45,19 +46,16 @@ typedef struct _MetaDndPrivate MetaDndPrivate;
struct _MetaDndPrivate
{
MetaBackend *backend;
#ifdef HAVE_WAYLAND
gboolean dnd_during_modal;
#else
/* to avoid warnings (g_type_class_add_private: assertion `private_size > 0' failed) */
gchar dummy;
#endif
};
struct _MetaDnd
{
GObject parent;
MetaDndPrivate *priv;
};
G_DEFINE_TYPE_WITH_PRIVATE (MetaDnd, meta_dnd, G_TYPE_OBJECT);
@ -108,10 +106,33 @@ meta_dnd_init (MetaDnd *dnd)
{
}
MetaDnd *
meta_dnd_new (MetaBackend *backend)
{
MetaDnd *dnd;
MetaDndPrivate *priv;
dnd = g_object_new (META_TYPE_DND, NULL);
priv = meta_dnd_get_instance_private (dnd);
priv->backend = backend;
return dnd;
}
MetaBackend *
meta_dnd_get_backend (MetaDnd *dnd)
{
MetaDndPrivate *priv = meta_dnd_get_instance_private (dnd);
return priv->backend;
}
void
meta_dnd_init_xdnd (MetaX11Display *x11_display)
{
MetaBackend *backend = meta_get_backend ();
MetaDisplay *display = meta_x11_display_get_display (x11_display);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
Display *xdisplay = x11_display->xdisplay;
Window xwindow, overlay_xwindow;
long xdnd_version = 5;
@ -226,20 +247,31 @@ meta_dnd_handle_xdnd_event (MetaBackend *backend,
}
#ifdef HAVE_WAYLAND
static MetaWaylandDataDevice *
data_device_from_dnd (MetaDnd *dnd)
{
MetaBackend *backend = meta_dnd_get_backend (dnd);
MetaContext *context = meta_backend_get_context (backend);
MetaWaylandCompositor *compositor =
meta_context_get_wayland_compositor (context);
return &compositor->seat->data_device;
}
static void
meta_dnd_wayland_on_motion_event (MetaDnd *dnd,
const ClutterEvent *event)
{
MetaWaylandDragGrab *current_grab;
gfloat event_x, event_y;
MetaWaylandCompositor *wl_compositor = meta_wayland_compositor_get_default ();
MetaWaylandDataDevice *data_device = data_device_from_dnd (dnd);
g_return_if_fail (event != NULL);
clutter_event_get_coords (event, &event_x, &event_y);
meta_dnd_notify_dnd_position_change (dnd, (int)event_x, (int)event_y);
current_grab = meta_wayland_data_device_get_current_grab (&wl_compositor->seat->data_device);
current_grab = meta_wayland_data_device_get_current_grab (data_device);
if (current_grab)
meta_wayland_drag_grab_update_feedback_actor (current_grab, event);
}
@ -248,9 +280,9 @@ static void
meta_dnd_wayland_end_notify (MetaDnd *dnd)
{
MetaDndPrivate *priv = meta_dnd_get_instance_private (dnd);
MetaWaylandCompositor *wl_compositor = meta_wayland_compositor_get_default ();
MetaWaylandDataDevice *data_device = data_device_from_dnd (dnd);
meta_wayland_data_device_end_drag (&wl_compositor->seat->data_device);
meta_wayland_data_device_end_drag (data_device);
priv->dnd_during_modal = FALSE;
@ -280,10 +312,10 @@ void
meta_dnd_wayland_maybe_handle_event (MetaDnd *dnd,
const ClutterEvent *event)
{
MetaWaylandCompositor *wl_compositor = meta_wayland_compositor_get_default ();
MetaWaylandDataDevice *data_device = data_device_from_dnd (dnd);
MetaDndPrivate *priv = meta_dnd_get_instance_private (dnd);
if (!meta_wayland_data_device_get_current_grab (&wl_compositor->seat->data_device))
if (!meta_wayland_data_device_get_current_grab (data_device))
return;
g_warn_if_fail (priv->dnd_during_modal);
@ -299,12 +331,17 @@ meta_dnd_wayland_maybe_handle_event (MetaDnd *dnd,
void
meta_dnd_wayland_handle_begin_modal (MetaCompositor *compositor)
{
MetaWaylandCompositor *wl_compositor = meta_wayland_compositor_get_default ();
MetaDnd *dnd = meta_backend_get_dnd (meta_get_backend ());
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
MetaWaylandCompositor *wayland_compositor =
meta_context_get_wayland_compositor (context);
MetaWaylandDataDevice *data_device = &wayland_compositor->seat->data_device;
MetaBackend *backend = meta_context_get_backend (context);
MetaDnd *dnd = meta_backend_get_dnd (backend);
MetaDndPrivate *priv = meta_dnd_get_instance_private (dnd);
if (!priv->dnd_during_modal &&
meta_wayland_data_device_get_current_grab (&wl_compositor->seat->data_device) != NULL)
meta_wayland_data_device_get_current_grab (data_device))
{
priv->dnd_during_modal = TRUE;
@ -315,7 +352,10 @@ meta_dnd_wayland_handle_begin_modal (MetaCompositor *compositor)
void
meta_dnd_wayland_handle_end_modal (MetaCompositor *compositor)
{
MetaDnd *dnd = meta_backend_get_dnd (meta_get_backend ());
MetaDisplay *display = meta_compositor_get_display (compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaDnd *dnd = meta_backend_get_dnd (backend);
MetaDndPrivate *priv = meta_dnd_get_instance_private (dnd);
if (!priv->dnd_during_modal)

6
src/compositor/meta-feedback-actor-private.h
View file

@ -24,6 +24,7 @@
#define META_FEEDBACK_ACTOR_PRIVATE_H
#include "clutter/clutter.h"
#include "meta/types.h"
/**
* MetaFeedbackActor:
@ -45,8 +46,9 @@ struct _MetaFeedbackActorClass
};
ClutterActor *meta_feedback_actor_new (float anchor_x,
float anchor_y);
ClutterActor * meta_feedback_actor_new (MetaCompositor *compositor,
float anchor_x,
float anchor_y);
void meta_feedback_actor_set_anchor (MetaFeedbackActor *actor,
float anchor_x,

50
src/compositor/meta-feedback-actor.c
View file

@ -32,14 +32,21 @@
enum
{
PROP_ANCHOR_X = 1,
PROP_ANCHOR_Y
PROP_0,
PROP_COMPOSITOR,
PROP_ANCHOR_X,
PROP_ANCHOR_Y,
N_PROPS
};
typedef struct _MetaFeedbackActorPrivate MetaFeedbackActorPrivate;
struct _MetaFeedbackActorPrivate
{
MetaCompositor *compositor;
float anchor_x;
float anchor_y;
float pos_x;
@ -53,11 +60,13 @@ G_DEFINE_TYPE_WITH_PRIVATE (MetaFeedbackActor, meta_feedback_actor, CLUTTER_TYPE
static void
meta_feedback_actor_constructed (GObject *object)
{
MetaDisplay *display;
MetaFeedbackActor *self = META_FEEDBACK_ACTOR (object);
MetaFeedbackActorPrivate *priv =
meta_feedback_actor_get_instance_private (self);
MetaDisplay *display = meta_compositor_get_display (priv->compositor);
ClutterActor *feedback_group;
display = meta_get_display ();
feedback_group = meta_get_feedback_group_for_display (display);
feedback_group = meta_compositor_get_feedback_group (priv->compositor);
clutter_actor_add_child (feedback_group, CLUTTER_ACTOR (object));
meta_disable_unredirect_for_display (display);
}
@ -65,7 +74,12 @@ meta_feedback_actor_constructed (GObject *object)
static void
meta_feedback_actor_finalize (GObject *object)
{
meta_enable_unredirect_for_display (meta_get_display ());
MetaFeedbackActor *self = META_FEEDBACK_ACTOR (object);
MetaFeedbackActorPrivate *priv =
meta_feedback_actor_get_instance_private (self);
MetaDisplay *display = meta_compositor_get_display (priv->compositor);
meta_enable_unredirect_for_display (display);
G_OBJECT_CLASS (meta_feedback_actor_parent_class)->finalize (object);
}
@ -93,6 +107,9 @@ meta_feedback_actor_set_property (GObject *object,
switch (prop_id)
{
case PROP_COMPOSITOR:
priv->compositor = g_value_get_object (value);
break;
case PROP_ANCHOR_X:
priv->anchor_x = g_value_get_int (value);
meta_feedback_actor_update_position (self);
@ -118,6 +135,9 @@ meta_feedback_actor_get_property (GObject *object,
switch (prop_id)
{
case PROP_COMPOSITOR:
g_value_set_object (value, priv->compositor);
break;
case PROP_ANCHOR_X:
g_value_set_float (value, priv->anchor_x);
break;
@ -141,6 +161,18 @@ meta_feedback_actor_class_init (MetaFeedbackActorClass *klass)
object_class->set_property = meta_feedback_actor_set_property;
object_class->get_property = meta_feedback_actor_get_property;
pspec = g_param_spec_object ("compositor",
"compositor",
"The compositor instance",
META_TYPE_COMPOSITOR,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_property (object_class,
PROP_COMPOSITOR,
pspec);
pspec = g_param_spec_float ("anchor-x",
"Anchor X",
"The X axis of the anchor point",
@ -178,12 +210,14 @@ meta_feedback_actor_init (MetaFeedbackActor *self)
* Return value: the newly created background actor
*/
ClutterActor *
meta_feedback_actor_new (float anchor_x,
float anchor_y)
meta_feedback_actor_new (MetaCompositor *compositor,
float anchor_x,
float anchor_y)
{
MetaFeedbackActor *self;
self = g_object_new (META_TYPE_FEEDBACK_ACTOR,
"compositor", compositor,
"anchor-x", anchor_x,
"anchor-y", anchor_y,
NULL);

5
src/compositor/meta-later.c
View file

@ -28,6 +28,8 @@
typedef struct _MetaLater
{
MetaLaters *laters;
unsigned int id;
unsigned int ref_count;
MetaLaterType when;
@ -198,7 +200,7 @@ invoke_later_idle (gpointer data)
if (!later->func (later->user_data))
{
meta_later_remove (later->id);
meta_laters_remove (later->laters, later->id);
return FALSE;
}
else
@ -237,6 +239,7 @@ meta_laters_add (MetaLaters *laters,
MetaLater *later = g_new0 (MetaLater, 1);
later->id = ++laters->last_later_id;
later->laters = laters;
later->ref_count = 1;
later->when = when;
later->func = func;

7
src/compositor/meta-plugin-manager.c
View file

@ -117,9 +117,11 @@ on_prepare_shutdown (MetaContext *context,
MetaPluginManager *
meta_plugin_manager_new (MetaCompositor *compositor)
{
MetaBackend *backend = meta_compositor_get_backend (compositor);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaPluginManager *plugin_mgr;
MetaPlugin *plugin;
MetaMonitorManager *monitors;
MetaDisplay *display;
MetaContext *context;
@ -130,8 +132,7 @@ meta_plugin_manager_new (MetaCompositor *compositor)
_meta_plugin_set_compositor (plugin, compositor);
monitors = meta_monitor_manager_get ();
g_signal_connect (monitors, "confirm-display-change",
g_signal_connect (monitor_manager, "confirm-display-change",
G_CALLBACK (on_confirm_display_change), plugin_mgr);
display = meta_compositor_get_display (compositor);

8
src/compositor/meta-plugin.c
View file

@ -164,8 +164,10 @@ void
meta_plugin_complete_display_change (MetaPlugin *plugin,
gboolean ok)
{
MetaMonitorManager *manager;
MetaPluginPrivate *priv = meta_plugin_get_instance_private (plugin);
MetaBackend *backend = meta_compositor_get_backend (priv->compositor);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
manager = meta_monitor_manager_get ();
meta_monitor_manager_confirm_configuration (manager, ok);
meta_monitor_manager_confirm_configuration (monitor_manager, ok);
}

10
src/compositor/meta-window-actor.c
View file

@ -1222,13 +1222,16 @@ meta_window_actor_transform_cursor_position (MetaScreenCastWindow *screen_cast_w
meta_cursor_sprite_get_cogl_texture (cursor_sprite) &&
out_cursor_scale)
{
MetaDisplay *display = meta_compositor_get_display (priv->compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaLogicalMonitor *logical_monitor;
float view_scale;
float cursor_texture_scale;
logical_monitor = meta_window_get_main_logical_monitor (window);
if (meta_is_stage_views_scaled ())
if (meta_backend_is_stage_views_scaled (backend))
view_scale = meta_logical_monitor_get_scale (logical_monitor);
else
view_scale = 1.0;
@ -1436,8 +1439,11 @@ create_framebuffer_from_window_actor (MetaWindowActor *self,
MetaRectangle *clip,
GError **error)
{
MetaWindowActorPrivate *priv = meta_window_actor_get_instance_private (self);
ClutterActor *actor = CLUTTER_ACTOR (self);
MetaBackend *backend = meta_get_backend ();
MetaDisplay *display = meta_compositor_get_display (priv->compositor);
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);

15
src/compositor/plugins/default.c
View file

@ -32,6 +32,7 @@
#include "meta/meta-background-actor.h"
#include "meta/meta-background-content.h"
#include "meta/meta-background-group.h"
#include "meta/meta-context.h"
#include "meta/meta-monitor-manager.h"
#include "meta/meta-plugin.h"
#include "meta/util.h"
@ -413,7 +414,8 @@ on_monitors_changed (MetaMonitorManager *monitor_manager,
}
static void
init_keymap (MetaDefaultPlugin *self)
init_keymap (MetaDefaultPlugin *self,
MetaBackend *backend)
{
g_autoptr (GError) error = NULL;
g_autoptr (GDBusProxy) proxy = NULL;
@ -469,8 +471,7 @@ init_keymap (MetaDefaultPlugin *self)
if (!g_variant_lookup (props, "X11Variant", "s", &x11_variant))
x11_variant = g_strdup ("");
meta_backend_set_keymap (meta_get_backend (),
x11_layout, x11_variant, x11_options);
meta_backend_set_keymap (backend, x11_layout, x11_variant, x11_options);
}
static void
@ -485,8 +486,10 @@ start (MetaPlugin *plugin)
{
MetaDefaultPlugin *self = META_DEFAULT_PLUGIN (plugin);
MetaDisplay *display = meta_plugin_get_display (plugin);
MetaMonitorManager *monitor_manager = meta_monitor_manager_get ();
MetaBackend *backend = meta_get_backend ();
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
self->priv->background_group = meta_background_group_new ();
clutter_actor_insert_child_below (meta_get_window_group_for_display (display),
@ -502,7 +505,7 @@ start (MetaPlugin *plugin)
self);
if (meta_is_wayland_compositor ())
init_keymap (self);
init_keymap (self, backend);
clutter_actor_show (meta_get_stage_for_display (display));
}

5
src/wayland/meta-wayland-data-device.c
View file

@ -655,6 +655,8 @@ meta_wayland_data_device_start_drag (MetaWaylandDataDevice *data
if (icon_surface)
{
MetaDisplay *display = display_from_data_device (data_device);
MetaCompositor *compositor = meta_display_get_compositor (display);
ClutterActor *drag_surface_actor;
drag_grab->drag_surface = icon_surface;
@ -667,7 +669,8 @@ meta_wayland_data_device_start_drag (MetaWaylandDataDevice *data
CLUTTER_ACTOR (meta_wayland_surface_get_actor (drag_grab->drag_surface));
drag_grab->feedback_actor =
meta_dnd_actor_new (CLUTTER_ACTOR (surface_actor),
meta_dnd_actor_new (compositor,
CLUTTER_ACTOR (surface_actor),
drag_grab->drag_start_x,
drag_grab->drag_start_y);
meta_feedback_actor_set_anchor (META_FEEDBACK_ACTOR (drag_grab->feedback_actor),