/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /** * SECTION:meta-window-actor * @title: MetaWindowActor * @short_description: An actor representing a top-level window in the scene graph */ #include #include #include #include #include #include #include #include /* for gdk_rectangle_union() */ #include #include #include #include "frame.h" #include #include #include "xprops.h" #include "compositor-private.h" #include "meta-shaped-texture-private.h" #include "meta-shadow-factory-private.h" #include "meta-window-actor-private.h" #include "meta-surface-actor.h" #include "meta-texture-rectangle.h" #include "region-utils.h" #include "meta-wayland-private.h" #include "monitor-private.h" #include "meta-cullable.h" enum { POSITION_CHANGED, SIZE_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = {0}; struct _MetaWindowActorPrivate { MetaWindow *window; Window xwindow; MetaScreen *screen; MetaSurfaceActor *surface; guint surface_allocation_changed_id; /* MetaShadowFactory only caches shadows that are actually in use; * to avoid unnecessary recomputation we do two things: 1) we store * both a focused and unfocused shadow for the window. If the window * doesn't have different focused and unfocused shadow parameters, * these will be the same. 2) when the shadow potentially changes we * don't immediately unreference the old shadow, we just flag it as * dirty and recompute it when we next need it (recompute_focused_shadow, * recompute_unfocused_shadow.) Because of our extraction of * size-invariant window shape, we'll often find that the new shadow * is the same as the old shadow. */ MetaShadow *focused_shadow; MetaShadow *unfocused_shadow; guint8 opacity; /* A region that matches the shape of the window, including frame bounds */ cairo_region_t *shape_region; /* If the window has an input shape, a region that matches the shape */ cairo_region_t *input_region; /* The opaque region, from _NET_WM_OPAQUE_REGION, intersected with * the shape region. */ cairo_region_t *opaque_region; /* The region we should clip to when painting the shadow */ cairo_region_t *shadow_clip; /* The region that is visible, used to optimize out redraws */ cairo_region_t *unobscured_region; guint send_frame_messages_timer; gint64 frame_drawn_time; /* Extracted size-invariant shape used for shadows */ MetaWindowShape *shadow_shape; gint last_width; gint last_height; gint freeze_count; char * shadow_class; /* * These need to be counters rather than flags, since more plugins * can implement same effect; the practicality of stacking effects * might be dubious, but we have to at least handle it correctly. */ gint minimize_in_progress; gint maximize_in_progress; gint unmaximize_in_progress; gint map_in_progress; gint destroy_in_progress; /* List of FrameData for recent frames */ GList *frames; Pixmap back_pixmap; /* Not used in wayland compositor mode */ Damage damage; /* Not used in wayland compositor mode */ guint visible : 1; guint mapped : 1; guint argb32 : 1; guint disposed : 1; guint redecorating : 1; /* If set, the client needs to be sent a _NET_WM_FRAME_DRAWN * client message using the most recent frame in ->frames */ guint needs_frame_drawn : 1; guint repaint_scheduled : 1; guint needs_reshape : 1; guint recompute_focused_shadow : 1; guint recompute_unfocused_shadow : 1; guint needs_destroy : 1; guint no_shadow : 1; /* * None of these are used in wayland compositor mode... */ guint needs_damage_all : 1; guint received_x11_damage : 1; guint needs_pixmap : 1; guint x11_size_changed : 1; guint updates_frozen : 1; guint unredirected : 1; /* This is used to detect fullscreen windows that need to be unredirected */ guint full_damage_frames_count; guint does_full_damage : 1; }; typedef struct _FrameData FrameData; struct _FrameData { int64_t frame_counter; guint64 sync_request_serial; gint64 frame_drawn_time; }; enum { PROP_META_WINDOW = 1, PROP_META_SCREEN, PROP_X_WINDOW, PROP_NO_SHADOW, PROP_SHADOW_CLASS }; static void meta_window_actor_dispose (GObject *object); static void meta_window_actor_finalize (GObject *object); static void meta_window_actor_constructed (GObject *object); static void meta_window_actor_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void meta_window_actor_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void meta_window_actor_paint (ClutterActor *actor); static gboolean meta_window_actor_get_paint_volume (ClutterActor *actor, ClutterPaintVolume *volume); static void meta_window_actor_detach_x11_pixmap (MetaWindowActor *self); static gboolean meta_window_actor_has_shadow (MetaWindowActor *self); static void meta_window_actor_handle_updates (MetaWindowActor *self); static void check_needs_reshape (MetaWindowActor *self); static void do_send_frame_drawn (MetaWindowActor *self, FrameData *frame); static void do_send_frame_timings (MetaWindowActor *self, FrameData *frame, gint refresh_interval, gint64 presentation_time); static void cullable_iface_init (MetaCullableInterface *iface); G_DEFINE_TYPE_WITH_CODE (MetaWindowActor, meta_window_actor, CLUTTER_TYPE_ACTOR, G_IMPLEMENT_INTERFACE (META_TYPE_CULLABLE, cullable_iface_init)); static void frame_data_free (FrameData *frame) { g_slice_free (FrameData, frame); } static void meta_window_actor_class_init (MetaWindowActorClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); GParamSpec *pspec; g_type_class_add_private (klass, sizeof (MetaWindowActorPrivate)); object_class->dispose = meta_window_actor_dispose; object_class->finalize = meta_window_actor_finalize; object_class->set_property = meta_window_actor_set_property; object_class->get_property = meta_window_actor_get_property; object_class->constructed = meta_window_actor_constructed; actor_class->paint = meta_window_actor_paint; actor_class->get_paint_volume = meta_window_actor_get_paint_volume; pspec = g_param_spec_object ("meta-window", "MetaWindow", "The displayed MetaWindow", META_TYPE_WINDOW, G_PARAM_READWRITE | G_PARAM_CONSTRUCT); g_object_class_install_property (object_class, PROP_META_WINDOW, pspec); pspec = g_param_spec_pointer ("meta-screen", "MetaScreen", "MetaScreen", G_PARAM_READWRITE | G_PARAM_CONSTRUCT); g_object_class_install_property (object_class, PROP_META_SCREEN, pspec); pspec = g_param_spec_ulong ("x-window", "Window", "Window", 0, G_MAXULONG, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT); g_object_class_install_property (object_class, PROP_X_WINDOW, pspec); pspec = g_param_spec_boolean ("no-shadow", "No shadow", "Do not add shaddow to this window", FALSE, G_PARAM_READWRITE); g_object_class_install_property (object_class, PROP_NO_SHADOW, pspec); pspec = g_param_spec_string ("shadow-class", "Name of the shadow class for this window.", "NULL means to use the default shadow class for this window type", NULL, G_PARAM_READWRITE); g_object_class_install_property (object_class, PROP_SHADOW_CLASS, pspec); signals[POSITION_CHANGED] = g_signal_new ("position-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0); signals[SIZE_CHANGED] = g_signal_new ("size-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0); } static void meta_window_actor_init (MetaWindowActor *self) { MetaWindowActorPrivate *priv; priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, META_TYPE_WINDOW_ACTOR, MetaWindowActorPrivate); priv->surface_allocation_changed_id = 0; priv->opacity = 0xff; priv->shadow_class = NULL; } static void window_decorated_notify (MetaWindow *mw, GParamSpec *arg1, gpointer data) { MetaWindowActor *self = META_WINDOW_ACTOR (data); MetaWindowActorPrivate *priv = self->priv; MetaFrame *frame = meta_window_get_frame (mw); MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); Window new_xwindow; /* * Basically, we have to reconstruct the the internals of this object * from scratch, as everything has changed. */ priv->redecorating = TRUE; if (frame) new_xwindow = meta_frame_get_xwindow (frame); else new_xwindow = meta_window_get_xwindow (mw); if (!meta_is_wayland_compositor ()) { meta_window_actor_detach_x11_pixmap (self); /* * First of all, clean up any resources we are currently using and will * be replacing. */ if (priv->damage != None) { meta_error_trap_push (display); XDamageDestroy (xdisplay, priv->damage); meta_error_trap_pop (display); priv->damage = None; } } priv->xwindow = new_xwindow; /* * Recreate the contents. */ meta_window_actor_constructed (G_OBJECT (self)); } static void window_appears_focused_notify (MetaWindow *mw, GParamSpec *arg1, gpointer data) { clutter_actor_queue_redraw (CLUTTER_ACTOR (data)); } static void surface_allocation_changed_notify (ClutterActor *actor, const ClutterActorBox *allocation, ClutterAllocationFlags flags, MetaWindowActor *self) { meta_window_actor_sync_actor_geometry (self, FALSE); meta_window_actor_update_shape (self); g_signal_emit (self, signals[SIZE_CHANGED], 0); } static void meta_window_actor_constructed (GObject *object) { MetaWindowActor *self = META_WINDOW_ACTOR (object); MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Window xwindow = priv->xwindow; MetaWindow *window = priv->window; Display *xdisplay = meta_display_get_xdisplay (display); if (!meta_is_wayland_compositor ()) priv->damage = XDamageCreate (xdisplay, xwindow, XDamageReportBoundingBox); if (window->client_type == META_WINDOW_CLIENT_TYPE_X11) { XRenderPictFormat *format; format = XRenderFindVisualFormat (xdisplay, window->xvisual); if (format && format->type == PictTypeDirect && format->direct.alphaMask) priv->argb32 = TRUE; } else { /* XXX: parse shm formats to determine argb32 */ priv->argb32 = TRUE; } if (!priv->surface) { priv->surface = meta_surface_actor_new (); clutter_actor_add_child (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface)); priv->surface_allocation_changed_id = g_signal_connect (CLUTTER_ACTOR (priv->surface), "allocation-changed", G_CALLBACK (surface_allocation_changed_notify), self); /* * Since we are holding a pointer to this actor independently of the * ClutterContainer internals, and provide a public API to access it, * add a reference here, so that if someone is messing about with us * via the container interface, we do not end up with a dangling pointer. * We will release it in dispose(). */ g_object_ref (priv->surface); g_signal_connect_object (window, "notify::decorated", G_CALLBACK (window_decorated_notify), self, 0); g_signal_connect_object (window, "notify::appears-focused", G_CALLBACK (window_appears_focused_notify), self, 0); } else { /* * This is the case where existing window is gaining/loosing frame. * Just ensure the actor is top most (i.e., above shadow). */ clutter_actor_set_child_above_sibling (CLUTTER_ACTOR (self), CLUTTER_ACTOR (priv->surface), NULL); } meta_window_actor_update_opacity (self); /* Start off with empty regions to maintain the invariant that these regions are always set */ priv->shape_region = cairo_region_create (); priv->input_region = cairo_region_create (); } static void meta_window_actor_dispose (GObject *object) { MetaWindowActor *self = META_WINDOW_ACTOR (object); MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen; MetaDisplay *display; Display *xdisplay; MetaCompScreen *info; if (priv->disposed) return; priv->disposed = TRUE; screen = priv->screen; info = meta_screen_get_compositor_data (screen); if (!meta_is_wayland_compositor ()) meta_window_actor_detach_x11_pixmap (self); if (priv->send_frame_messages_timer != 0) { g_source_remove (priv->send_frame_messages_timer); priv->send_frame_messages_timer = 0; } g_clear_pointer (&priv->unobscured_region, cairo_region_destroy); g_clear_pointer (&priv->shape_region, cairo_region_destroy); g_clear_pointer (&priv->input_region, cairo_region_destroy); g_clear_pointer (&priv->opaque_region, cairo_region_destroy); g_clear_pointer (&priv->shadow_clip, cairo_region_destroy); g_clear_pointer (&priv->shadow_class, g_free); g_clear_pointer (&priv->focused_shadow, meta_shadow_unref); g_clear_pointer (&priv->unfocused_shadow, meta_shadow_unref); g_clear_pointer (&priv->shadow_shape, meta_window_shape_unref); if (!meta_is_wayland_compositor () && priv->damage != None) { display = meta_screen_get_display (screen); xdisplay = meta_display_get_xdisplay (display); meta_error_trap_push (display); XDamageDestroy (xdisplay, priv->damage); meta_error_trap_pop (display); priv->damage = None; } info->windows = g_list_remove (info->windows, (gconstpointer) self); g_clear_object (&priv->window); if (priv->surface != NULL && priv->surface_allocation_changed_id != 0) g_signal_handler_disconnect (priv->surface, priv->surface_allocation_changed_id); priv->surface_allocation_changed_id = 0; /* * Release the extra reference we took on the actor. */ g_clear_object (&priv->surface); G_OBJECT_CLASS (meta_window_actor_parent_class)->dispose (object); } static void meta_window_actor_finalize (GObject *object) { MetaWindowActor *self = META_WINDOW_ACTOR (object); MetaWindowActorPrivate *priv = self->priv; g_list_free_full (priv->frames, (GDestroyNotify) frame_data_free); G_OBJECT_CLASS (meta_window_actor_parent_class)->finalize (object); } static void meta_window_actor_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { MetaWindowActor *self = META_WINDOW_ACTOR (object); MetaWindowActorPrivate *priv = self->priv; switch (prop_id) { case PROP_META_WINDOW: { if (priv->window) g_object_unref (priv->window); priv->window = g_value_dup_object (value); } break; case PROP_META_SCREEN: priv->screen = g_value_get_pointer (value); break; case PROP_X_WINDOW: priv->xwindow = g_value_get_ulong (value); break; case PROP_NO_SHADOW: { gboolean newv = g_value_get_boolean (value); if (newv == priv->no_shadow) return; priv->no_shadow = newv; meta_window_actor_invalidate_shadow (self); } break; case PROP_SHADOW_CLASS: { const char *newv = g_value_get_string (value); if (g_strcmp0 (newv, priv->shadow_class) == 0) return; g_free (priv->shadow_class); priv->shadow_class = g_strdup (newv); meta_window_actor_invalidate_shadow (self); } break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void meta_window_actor_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaWindowActorPrivate *priv = META_WINDOW_ACTOR (object)->priv; switch (prop_id) { case PROP_META_WINDOW: g_value_set_object (value, priv->window); break; case PROP_META_SCREEN: g_value_set_pointer (value, priv->screen); break; case PROP_X_WINDOW: g_value_set_ulong (value, priv->xwindow); break; case PROP_NO_SHADOW: g_value_set_boolean (value, priv->no_shadow); break; case PROP_SHADOW_CLASS: g_value_set_string (value, priv->shadow_class); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static const char * meta_window_actor_get_shadow_class (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; if (priv->shadow_class != NULL) return priv->shadow_class; else { MetaWindowType window_type = meta_window_get_window_type (priv->window); switch (window_type) { case META_WINDOW_DROPDOWN_MENU: return "dropdown-menu"; case META_WINDOW_POPUP_MENU: return "popup-menu"; default: { MetaFrameType frame_type = meta_window_get_frame_type (priv->window); return meta_frame_type_to_string (frame_type); } } } } static void meta_window_actor_get_shadow_params (MetaWindowActor *self, gboolean appears_focused, MetaShadowParams *params) { const char *shadow_class = meta_window_actor_get_shadow_class (self); meta_shadow_factory_get_params (meta_shadow_factory_get_default (), shadow_class, appears_focused, params); } void meta_window_actor_get_shape_bounds (MetaWindowActor *self, cairo_rectangle_int_t *bounds) { MetaWindowActorPrivate *priv = self->priv; cairo_region_get_extents (priv->shape_region, bounds); } static void meta_window_actor_get_shadow_bounds (MetaWindowActor *self, gboolean appears_focused, cairo_rectangle_int_t *bounds) { MetaWindowActorPrivate *priv = self->priv; MetaShadow *shadow = appears_focused ? priv->focused_shadow : priv->unfocused_shadow; cairo_rectangle_int_t shape_bounds; MetaShadowParams params; meta_window_actor_get_shape_bounds (self, &shape_bounds); meta_window_actor_get_shadow_params (self, appears_focused, ¶ms); meta_shadow_get_bounds (shadow, params.x_offset + shape_bounds.x, params.y_offset + shape_bounds.y, shape_bounds.width, shape_bounds.height, bounds); } /* If we have an ARGB32 window that we decorate with a frame, it's * probably something like a translucent terminal - something where * the alpha channel represents transparency rather than a shape. We * don't want to show the shadow through the translucent areas since * the shadow is wrong for translucent windows (it should be * translucent itself and colored), and not only that, will /look/ * horribly wrong - a misplaced big black blob. As a hack, what we * want to do is just draw the shadow as normal outside the frame, and * inside the frame draw no shadow. This is also not even close to * the right result, but looks OK. We also apply this approach to * windows set to be partially translucent with _NET_WM_WINDOW_OPACITY. */ static gboolean clip_shadow_under_window (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; return (priv->argb32 || priv->opacity != 0xff) && priv->window->frame; } static void meta_window_actor_paint (ClutterActor *actor) { MetaWindowActor *self = META_WINDOW_ACTOR (actor); MetaWindowActorPrivate *priv = self->priv; gboolean appears_focused = meta_window_appears_focused (priv->window); MetaShadow *shadow = appears_focused ? priv->focused_shadow : priv->unfocused_shadow; /* This window got damage when obscured; we set up a timer * to send frame completion events, but since we're drawing * the window now (for some other reason) cancel the timer * and send the completion events normally */ if (priv->send_frame_messages_timer != 0) { g_source_remove (priv->send_frame_messages_timer); priv->send_frame_messages_timer = 0; } if (shadow != NULL) { MetaShadowParams params; cairo_rectangle_int_t shape_bounds; cairo_region_t *clip = priv->shadow_clip; meta_window_actor_get_shape_bounds (self, &shape_bounds); meta_window_actor_get_shadow_params (self, appears_focused, ¶ms); /* The frame bounds are already subtracted from priv->shadow_clip * if that exists. */ if (!clip && clip_shadow_under_window (self)) { cairo_region_t *frame_bounds = meta_window_get_frame_bounds (priv->window); cairo_rectangle_int_t bounds; meta_window_actor_get_shadow_bounds (self, appears_focused, &bounds); clip = cairo_region_create_rectangle (&bounds); cairo_region_subtract (clip, frame_bounds); } meta_shadow_paint (shadow, params.x_offset + shape_bounds.x, params.y_offset + shape_bounds.y, shape_bounds.width, shape_bounds.height, (clutter_actor_get_paint_opacity (actor) * params.opacity * priv->opacity) / (255 * 255), clip, clip_shadow_under_window (self)); /* clip_strictly - not just as an optimization */ if (clip && clip != priv->shadow_clip) cairo_region_destroy (clip); } CLUTTER_ACTOR_CLASS (meta_window_actor_parent_class)->paint (actor); } static gboolean meta_window_actor_get_paint_volume (ClutterActor *actor, ClutterPaintVolume *volume) { MetaWindowActor *self = META_WINDOW_ACTOR (actor); MetaWindowActorPrivate *priv = self->priv; cairo_rectangle_int_t bounds; gboolean appears_focused = meta_window_appears_focused (priv->window); ClutterVertex origin; /* The paint volume is computed before paint functions are called * so our bounds might not be updated yet. Force an update. */ meta_window_actor_handle_updates (self); meta_window_actor_get_shape_bounds (self, &bounds); if (appears_focused ? priv->focused_shadow : priv->unfocused_shadow) { cairo_rectangle_int_t shadow_bounds; /* We could compute an full clip region as we do for the window * texture, but the shadow is relatively cheap to draw, and * a little more complex to clip, so we just catch the case where * the shadow is completely obscured and doesn't need to be drawn * at all. */ meta_window_actor_get_shadow_bounds (self, appears_focused, &shadow_bounds); gdk_rectangle_union (&bounds, &shadow_bounds, &bounds); } if (priv->unobscured_region) cairo_region_intersect_rectangle (priv->unobscured_region, &bounds); origin.x = bounds.x; origin.y = bounds.y; origin.z = 0.0f; clutter_paint_volume_set_origin (volume, &origin); clutter_paint_volume_set_width (volume, bounds.width); clutter_paint_volume_set_height (volume, bounds.height); return TRUE; } static gboolean meta_window_actor_has_shadow (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaWindowType window_type = meta_window_get_window_type (priv->window); if (priv->no_shadow) return FALSE; /* Leaving out shadows for maximized and fullscreen windows is an effeciency * win and also prevents the unsightly effect of the shadow of maximized * window appearing on an adjacent window */ if ((meta_window_get_maximized (priv->window) == (META_MAXIMIZE_HORIZONTAL | META_MAXIMIZE_VERTICAL)) || meta_window_is_fullscreen (priv->window)) return FALSE; /* * If we have two snap-tiled windows, we don't want the shadow to obstruct * the other window. */ if (meta_window_get_tile_match (priv->window)) return FALSE; /* * Always put a shadow around windows with a frame - This should override * the restriction about not putting a shadow around ARGB windows. */ if (meta_window_get_frame (priv->window)) return TRUE; /* * Do not add shadows to ARGB windows; eventually we should generate a * shadow from the input shape for such windows. */ if (priv->argb32 || priv->opacity != 0xff) return FALSE; /* * Add shadows to override redirect windows (e.g., Gtk menus). */ if (priv->window->override_redirect) return TRUE; /* * Don't put shadow around DND icon windows */ if (window_type == META_WINDOW_DND || window_type == META_WINDOW_DESKTOP) return FALSE; if (window_type == META_WINDOW_MENU #if 0 || window_type == META_WINDOW_DROPDOWN_MENU #endif ) return TRUE; #if 0 if (window_type == META_WINDOW_TOOLTIP) return TRUE; #endif return FALSE; } /** * meta_window_actor_get_x_window: (skip) * @self: a #MetaWindowActor * */ Window meta_window_actor_get_x_window (MetaWindowActor *self) { if (!self) return None; return self->priv->xwindow; } /** * meta_window_actor_get_meta_window: * @self: a #MetaWindowActor * * Gets the #MetaWindow object that the the #MetaWindowActor is displaying * * Return value: (transfer none): the displayed #MetaWindow */ MetaWindow * meta_window_actor_get_meta_window (MetaWindowActor *self) { return self->priv->window; } /** * meta_window_actor_get_texture: * @self: a #MetaWindowActor * * Gets the ClutterActor that is used to display the contents of the window * * Return value: (transfer none): the #ClutterActor for the contents */ ClutterActor * meta_window_actor_get_texture (MetaWindowActor *self) { return CLUTTER_ACTOR (meta_surface_actor_get_texture (self->priv->surface)); } /** * meta_window_actor_get_surface: * @self: a #MetaWindowActor * * Gets the MetaSurfaceActor that draws the content of this window * * Return value: (transfer none): the #MetaSurfaceActor for the contents */ MetaSurfaceActor * meta_window_actor_get_surface (MetaWindowActor *self) { return self->priv->surface; } /** * meta_window_actor_is_destroyed: * @self: a #MetaWindowActor * * Gets whether the X window that the actor was displaying has been destroyed * * Return value: %TRUE when the window is destroyed, otherwise %FALSE */ gboolean meta_window_actor_is_destroyed (MetaWindowActor *self) { return self->priv->disposed; } gboolean meta_window_actor_is_override_redirect (MetaWindowActor *self) { return meta_window_is_override_redirect (self->priv->window); } /** * meta_window_actor_get_workspace: * @self: #MetaWindowActor * * Returns the index of workspace on which this window is located; if the * window is sticky, or is not currently located on any workspace, returns -1. * This function is deprecated and should not be used in newly written code; * meta_window_get_workspace() instead. * * Return value: (transfer none): index of workspace on which this window is * located. */ gint meta_window_actor_get_workspace (MetaWindowActor *self) { MetaWindowActorPrivate *priv; MetaWorkspace *workspace; if (!self) return -1; priv = self->priv; if (!priv->window || meta_window_is_on_all_workspaces (priv->window)) return -1; workspace = meta_window_get_workspace (priv->window); if (!workspace) return -1; return meta_workspace_index (workspace); } gboolean meta_window_actor_showing_on_its_workspace (MetaWindowActor *self) { if (!self) return FALSE; /* If override redirect: */ if (!self->priv->window) return TRUE; return meta_window_showing_on_its_workspace (self->priv->window); } static void meta_window_actor_freeze (MetaWindowActor *self) { if (!meta_is_wayland_compositor ()) self->priv->freeze_count++; } static gboolean send_frame_messages_timeout (gpointer data) { MetaWindowActor *self = (MetaWindowActor *) data; MetaWindowActorPrivate *priv = self->priv; FrameData *frame = g_slice_new0 (FrameData); frame->sync_request_serial = priv->window->sync_request_serial; do_send_frame_drawn (self, frame); do_send_frame_timings (self, frame, 0, 0); priv->needs_frame_drawn = FALSE; priv->send_frame_messages_timer = 0; frame_data_free (frame); return FALSE; } static void queue_send_frame_messages_timeout (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); gint64 current_time = meta_compositor_monotonic_time_to_server_time (display, g_get_monotonic_time ()); MetaMonitorManager *monitor_manager = meta_monitor_manager_get (); MetaWindow *window = priv->window; MetaOutput *outputs; guint n_outputs, i; float refresh_rate = 60.0f; gint interval, offset; outputs = meta_monitor_manager_get_outputs (monitor_manager, &n_outputs); for (i = 0; i < n_outputs; i++) { if (outputs[i].output_id == window->monitor->output_id && outputs[i].crtc) { refresh_rate = outputs[i].crtc->current_mode->refresh_rate; break; } } interval = (int)(1000000 / refresh_rate) * 6; offset = MAX (0, priv->frame_drawn_time + interval - current_time) / 1000; /* The clutter master clock source has already been added with META_PRIORITY_REDRAW, * so the timer will run *after* the clutter frame handling, if a frame is ready * to be drawn when the timer expires. */ priv->send_frame_messages_timer = g_timeout_add_full (META_PRIORITY_REDRAW, offset, send_frame_messages_timeout, self, NULL); } static void meta_window_actor_damage_all (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; cairo_region_t *unobscured_region; gboolean redraw_queued; if (!priv->needs_damage_all) return; if (!priv->mapped || priv->needs_pixmap) return; unobscured_region = clutter_actor_has_mapped_clones (CLUTTER_ACTOR (priv->surface)) ? NULL : priv->unobscured_region; redraw_queued = meta_surface_actor_damage_all (priv->surface, unobscured_region); priv->repaint_scheduled = priv->repaint_scheduled || redraw_queued; priv->needs_damage_all = FALSE; } static void meta_window_actor_thaw (MetaWindowActor *self) { if (!meta_is_wayland_compositor ()) { self->priv->freeze_count--; if (G_UNLIKELY (self->priv->freeze_count < 0)) { g_warning ("Error in freeze/thaw accounting."); self->priv->freeze_count = 0; return; } if (self->priv->freeze_count) return; /* We sometimes ignore moves and resizes on frozen windows */ meta_window_actor_sync_actor_geometry (self, FALSE); /* We do this now since we might be going right back into the * frozen state */ meta_window_actor_handle_updates (self); /* Since we ignore damage events while a window is frozen for certain effects * we may need to issue an update_area() covering the whole pixmap if we * don't know what real damage has happened. */ if (self->priv->needs_damage_all) meta_window_actor_damage_all (self); } } void meta_window_actor_queue_frame_drawn (MetaWindowActor *self, gboolean no_delay_frame) { MetaWindowActorPrivate *priv = self->priv; FrameData *frame = g_slice_new0 (FrameData); priv->needs_frame_drawn = TRUE; frame->sync_request_serial = priv->window->sync_request_serial; priv->frames = g_list_prepend (priv->frames, frame); if (no_delay_frame) { ClutterActor *stage = clutter_actor_get_stage (CLUTTER_ACTOR (self)); clutter_stage_skip_sync_delay (CLUTTER_STAGE (stage)); } if (!priv->repaint_scheduled) { gboolean is_obscured = FALSE; /* Find out whether the window is completly obscured */ if (priv->unobscured_region) { cairo_region_t *unobscured_window_region; unobscured_window_region = cairo_region_copy (priv->shape_region); cairo_region_intersect (unobscured_window_region, priv->unobscured_region); is_obscured = cairo_region_is_empty (unobscured_window_region); cairo_region_destroy (unobscured_window_region); } /* A frame was marked by the client without actually doing any * damage or any unobscured, or while we had the window frozen * (e.g. during an interactive resize.) We need to make sure that the * pre_paint/post_paint functions get called, enabling us to * send a _NET_WM_FRAME_DRAWN. We do a 1-pixel redraw to get * consistent timing with non-empty frames. If the window * is completely obscured we fire off the send_frame_messages timeout. */ if (is_obscured) { queue_send_frame_messages_timeout (self); } else if (priv->mapped && (!meta_is_wayland_compositor () || !priv->needs_pixmap)) { const cairo_rectangle_int_t clip = { 0, 0, 1, 1 }; clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (priv->surface), &clip); priv->repaint_scheduled = TRUE; } } } gboolean meta_window_actor_effect_in_progress (MetaWindowActor *self) { return (self->priv->minimize_in_progress || self->priv->maximize_in_progress || self->priv->unmaximize_in_progress || self->priv->map_in_progress || self->priv->destroy_in_progress); } static gboolean is_frozen (MetaWindowActor *self) { return self->priv->freeze_count ? TRUE : FALSE; } static void meta_window_actor_queue_create_x11_pixmap (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; priv->needs_pixmap = TRUE; if (!priv->mapped) return; if (is_frozen (self)) return; /* This will cause the compositor paint function to be run * if the actor is visible or a clone of the actor is visible. * if the actor isn't visible in any way, then we don't * need to repair the window anyways, and can wait until * the stage is redrawn for some other reason * * The compositor paint function repairs all windows. */ clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface)); } static gboolean is_freeze_thaw_effect (gulong event) { switch (event) { case META_PLUGIN_DESTROY: case META_PLUGIN_MAXIMIZE: case META_PLUGIN_UNMAXIMIZE: return TRUE; break; default: return FALSE; } } static gboolean start_simple_effect (MetaWindowActor *self, gulong event) { MetaWindowActorPrivate *priv = self->priv; MetaCompScreen *info = meta_screen_get_compositor_data (priv->screen); gint *counter = NULL; gboolean use_freeze_thaw = FALSE; if (!info->plugin_mgr) return FALSE; switch (event) { case META_PLUGIN_MINIMIZE: counter = &priv->minimize_in_progress; break; case META_PLUGIN_MAP: counter = &priv->map_in_progress; break; case META_PLUGIN_DESTROY: counter = &priv->destroy_in_progress; break; case META_PLUGIN_UNMAXIMIZE: case META_PLUGIN_MAXIMIZE: case META_PLUGIN_SWITCH_WORKSPACE: g_assert_not_reached (); break; } g_assert (counter); use_freeze_thaw = is_freeze_thaw_effect (event); if (use_freeze_thaw) meta_window_actor_freeze (self); (*counter)++; if (!meta_plugin_manager_event_simple (info->plugin_mgr, self, event)) { (*counter)--; if (use_freeze_thaw) meta_window_actor_thaw (self); return FALSE; } return TRUE; } static void meta_window_actor_after_effects (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; if (priv->needs_destroy) { clutter_actor_destroy (CLUTTER_ACTOR (self)); return; } meta_window_actor_sync_visibility (self); meta_window_actor_sync_actor_geometry (self, FALSE); if (!meta_is_wayland_compositor ()) { if (!meta_window_is_mapped (priv->window)) meta_window_actor_detach_x11_pixmap (self); if (priv->needs_pixmap) clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface)); } } void meta_window_actor_effect_completed (MetaWindowActor *self, gulong event) { MetaWindowActorPrivate *priv = self->priv; /* NB: Keep in mind that when effects get completed it possible * that the corresponding MetaWindow may have be been destroyed. * In this case priv->window will == NULL */ switch (event) { case META_PLUGIN_MINIMIZE: { priv->minimize_in_progress--; if (priv->minimize_in_progress < 0) { g_warning ("Error in minimize accounting."); priv->minimize_in_progress = 0; } } break; case META_PLUGIN_MAP: /* * Make sure that the actor is at the correct place in case * the plugin fscked. */ priv->map_in_progress--; if (priv->map_in_progress < 0) { g_warning ("Error in map accounting."); priv->map_in_progress = 0; } break; case META_PLUGIN_DESTROY: priv->destroy_in_progress--; if (priv->destroy_in_progress < 0) { g_warning ("Error in destroy accounting."); priv->destroy_in_progress = 0; } break; case META_PLUGIN_UNMAXIMIZE: priv->unmaximize_in_progress--; if (priv->unmaximize_in_progress < 0) { g_warning ("Error in unmaximize accounting."); priv->unmaximize_in_progress = 0; } break; case META_PLUGIN_MAXIMIZE: priv->maximize_in_progress--; if (priv->maximize_in_progress < 0) { g_warning ("Error in maximize accounting."); priv->maximize_in_progress = 0; } break; case META_PLUGIN_SWITCH_WORKSPACE: g_assert_not_reached (); break; } if (is_freeze_thaw_effect (event)) meta_window_actor_thaw (self); if (!meta_window_actor_effect_in_progress (self)) meta_window_actor_after_effects (self); } /* Called to drop our reference to a window backing pixmap that we * previously obtained with XCompositeNameWindowPixmap. We do this * when the window is unmapped or when we want to update to a new * pixmap for a new size. */ static void meta_window_actor_detach_x11_pixmap (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); if (!priv->back_pixmap) return; /* Get rid of all references to the pixmap before freeing it; it's unclear whether * you are supposed to be able to free a GLXPixmap after freeing the underlying * pixmap, but it certainly doesn't work with current DRI/Mesa */ meta_surface_actor_set_texture (priv->surface, NULL); cogl_flush(); XFreePixmap (xdisplay, priv->back_pixmap); priv->back_pixmap = None; meta_window_actor_queue_create_x11_pixmap (self); } gboolean meta_window_actor_should_unredirect (MetaWindowActor *self) { MetaWindow *metaWindow = meta_window_actor_get_meta_window (self); MetaWindowActorPrivate *priv = self->priv; if (meta_window_requested_dont_bypass_compositor (metaWindow)) return FALSE; if (priv->opacity != 0xff) return FALSE; if (metaWindow->shape_region != NULL) return FALSE; if (priv->argb32 && !meta_window_requested_bypass_compositor (metaWindow)) return FALSE; if (!meta_window_is_monitor_sized (metaWindow)) return FALSE; if (meta_window_requested_bypass_compositor (metaWindow)) return TRUE; if (meta_window_is_override_redirect (metaWindow)) return TRUE; if (!meta_is_wayland_compositor () && priv->does_full_damage) return TRUE; return FALSE; } void meta_window_actor_set_redirected (MetaWindowActor *self, gboolean state) { MetaWindow *metaWindow = meta_window_actor_get_meta_window (self); MetaDisplay *display = meta_window_get_display (metaWindow); Display *xdisplay = meta_display_get_xdisplay (display); Window xwin = meta_window_actor_get_x_window (self); if (state) { meta_error_trap_push (display); XCompositeRedirectWindow (xdisplay, xwin, CompositeRedirectManual); meta_error_trap_pop (display); meta_window_actor_detach_x11_pixmap (self); self->priv->unredirected = FALSE; } else { meta_error_trap_push (display); XCompositeUnredirectWindow (xdisplay, xwin, CompositeRedirectManual); meta_error_trap_pop (display); self->priv->unredirected = TRUE; } } void meta_window_actor_destroy (MetaWindowActor *self) { MetaWindow *window; MetaCompScreen *info; MetaWindowActorPrivate *priv; MetaWindowType window_type; priv = self->priv; window = priv->window; window_type = meta_window_get_window_type (window); meta_window_set_compositor_private (window, NULL); /* * We remove the window from internal lookup hashes and thus any other * unmap events etc fail */ info = meta_screen_get_compositor_data (priv->screen); info->windows = g_list_remove (info->windows, (gconstpointer) self); if (window_type == META_WINDOW_DROPDOWN_MENU || window_type == META_WINDOW_POPUP_MENU || window_type == META_WINDOW_TOOLTIP || window_type == META_WINDOW_NOTIFICATION || window_type == META_WINDOW_COMBO || window_type == META_WINDOW_DND || window_type == META_WINDOW_OVERRIDE_OTHER) { /* * No effects, just kill it. */ clutter_actor_destroy (CLUTTER_ACTOR (self)); return; } priv->needs_destroy = TRUE; if (!meta_window_actor_effect_in_progress (self)) clutter_actor_destroy (CLUTTER_ACTOR (self)); } void meta_window_actor_sync_actor_geometry (MetaWindowActor *self, gboolean did_placement) { MetaWindowActorPrivate *priv = self->priv; MetaRectangle window_rect; meta_window_get_input_rect (priv->window, &window_rect); /* When running as a display server we catch size changes when new buffers are attached */ if (!meta_is_wayland_compositor ()) { if (priv->last_width != window_rect.width || priv->last_height != window_rect.height) { priv->x11_size_changed = TRUE; priv->last_width = window_rect.width; priv->last_height = window_rect.height; } } /* Normally we want freezing a window to also freeze its position; this allows * windows to atomically move and resize together, either under app control, * or because the user is resizing from the left/top. But on initial placement * we need to assign a position, since immediately after the window * is shown, the map effect will go into effect and prevent further geometry * updates. */ if (is_frozen (self) && !did_placement) return; if (!meta_is_wayland_compositor ()) { if (priv->x11_size_changed) { meta_window_actor_queue_create_x11_pixmap (self); meta_window_actor_update_shape (self); } } if (meta_window_actor_effect_in_progress (self)) return; clutter_actor_set_position (CLUTTER_ACTOR (self), window_rect.x, window_rect.y); clutter_actor_set_size (CLUTTER_ACTOR (self), window_rect.width, window_rect.height); g_signal_emit (self, signals[POSITION_CHANGED], 0); } void meta_window_actor_show (MetaWindowActor *self, MetaCompEffect effect) { MetaWindowActorPrivate *priv; MetaCompScreen *info; gulong event; priv = self->priv; info = meta_screen_get_compositor_data (priv->screen); g_return_if_fail (!priv->visible); self->priv->visible = TRUE; event = 0; switch (effect) { case META_COMP_EFFECT_CREATE: event = META_PLUGIN_MAP; break; case META_COMP_EFFECT_UNMINIMIZE: /* FIXME: should have META_PLUGIN_UNMINIMIZE */ event = META_PLUGIN_MAP; break; case META_COMP_EFFECT_NONE: break; case META_COMP_EFFECT_DESTROY: case META_COMP_EFFECT_MINIMIZE: g_assert_not_reached(); } if (priv->redecorating || info->switch_workspace_in_progress || event == 0 || !start_simple_effect (self, event)) { clutter_actor_show (CLUTTER_ACTOR (self)); priv->redecorating = FALSE; } } void meta_window_actor_hide (MetaWindowActor *self, MetaCompEffect effect) { MetaWindowActorPrivate *priv; MetaCompScreen *info; gulong event; priv = self->priv; info = meta_screen_get_compositor_data (priv->screen); g_return_if_fail (priv->visible); priv->visible = FALSE; clutter_actor_set_reactive (CLUTTER_ACTOR (self), FALSE); /* If a plugin is animating a workspace transition, we have to * hold off on hiding the window, and do it after the workspace * switch completes */ if (info->switch_workspace_in_progress) return; event = 0; switch (effect) { case META_COMP_EFFECT_DESTROY: event = META_PLUGIN_DESTROY; break; case META_COMP_EFFECT_MINIMIZE: event = META_PLUGIN_MINIMIZE; break; case META_COMP_EFFECT_NONE: break; case META_COMP_EFFECT_UNMINIMIZE: case META_COMP_EFFECT_CREATE: g_assert_not_reached(); } if (event == 0 || !start_simple_effect (self, event)) clutter_actor_hide (CLUTTER_ACTOR (self)); } void meta_window_actor_maximize (MetaWindowActor *self, MetaRectangle *old_rect, MetaRectangle *new_rect) { MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen); /* The window has already been resized (in order to compute new_rect), * which by side effect caused the actor to be resized. Restore it to the * old size and position */ clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y); clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height); self->priv->maximize_in_progress++; meta_window_actor_freeze (self); if (!info->plugin_mgr || !meta_plugin_manager_event_maximize (info->plugin_mgr, self, META_PLUGIN_MAXIMIZE, new_rect->x, new_rect->y, new_rect->width, new_rect->height)) { self->priv->maximize_in_progress--; meta_window_actor_thaw (self); } } void meta_window_actor_unmaximize (MetaWindowActor *self, MetaRectangle *old_rect, MetaRectangle *new_rect) { MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen); /* The window has already been resized (in order to compute new_rect), * which by side effect caused the actor to be resized. Restore it to the * old size and position */ clutter_actor_set_position (CLUTTER_ACTOR (self), old_rect->x, old_rect->y); clutter_actor_set_size (CLUTTER_ACTOR (self), old_rect->width, old_rect->height); self->priv->unmaximize_in_progress++; meta_window_actor_freeze (self); if (!info->plugin_mgr || !meta_plugin_manager_event_maximize (info->plugin_mgr, self, META_PLUGIN_UNMAXIMIZE, new_rect->x, new_rect->y, new_rect->width, new_rect->height)) { self->priv->unmaximize_in_progress--; meta_window_actor_thaw (self); } } MetaWindowActor * meta_window_actor_new (MetaWindow *window) { MetaScreen *screen = meta_window_get_screen (window); MetaCompScreen *info = meta_screen_get_compositor_data (screen); MetaWindowActor *self; MetaWindowActorPrivate *priv; MetaFrame *frame; Window top_window = None; ClutterActor *window_group; if (window->client_type == META_WINDOW_CLIENT_TYPE_X11) { frame = meta_window_get_frame (window); if (frame) top_window = meta_frame_get_xwindow (frame); else top_window = meta_window_get_xwindow (window); meta_verbose ("add window: Meta %p, xwin 0x%x\n", window, (guint)top_window); } else { meta_verbose ("add window: Meta %p, wayland surface %p\n", window, window->surface); top_window = None; } self = g_object_new (META_TYPE_WINDOW_ACTOR, "meta-window", window, "x-window", top_window, "meta-screen", screen, NULL); priv = self->priv; priv->mapped = meta_window_toplevel_is_mapped (priv->window); if (!meta_is_wayland_compositor ()) { priv->last_width = -1; priv->last_height = -1; if (priv->mapped) meta_window_actor_queue_create_x11_pixmap (self); meta_window_actor_set_updates_frozen (self, meta_window_updates_are_frozen (priv->window)); /* If a window doesn't start off with updates frozen, we should * we should send a _NET_WM_FRAME_DRAWN immediately after the first drawn. */ if (priv->window->extended_sync_request_counter && !priv->updates_frozen) meta_window_actor_queue_frame_drawn (self, FALSE); } meta_window_actor_sync_actor_geometry (self, priv->window->placed); /* Hang our compositor window state off the MetaWindow for fast retrieval */ meta_window_set_compositor_private (window, G_OBJECT (self)); if (window->layer == META_LAYER_OVERRIDE_REDIRECT) window_group = info->top_window_group; else window_group = info->window_group; clutter_actor_add_child (window_group, CLUTTER_ACTOR (self)); clutter_actor_hide (CLUTTER_ACTOR (self)); clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE); /* Initial position in the stack is arbitrary; stacking will be synced * before we first paint. */ info->windows = g_list_append (info->windows, self); return self; } void meta_window_actor_mapped (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; g_return_if_fail (!priv->mapped); priv->mapped = TRUE; if (!meta_is_wayland_compositor ()) meta_window_actor_queue_create_x11_pixmap (self); } void meta_window_actor_unmapped (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; g_return_if_fail (priv->mapped); priv->mapped = FALSE; if (meta_window_actor_effect_in_progress (self)) return; if (!meta_is_wayland_compositor ()) { meta_window_actor_detach_x11_pixmap (self); priv->needs_pixmap = FALSE; } } /** * meta_window_actor_get_obscured_region: * @self: a #MetaWindowActor * * Gets the region that is completely obscured by the window. Coordinates * are relative to the upper-left of the window. * * Return value: (transfer none): the area obscured by the window, * %NULL is the same as an empty region. */ static cairo_region_t * meta_window_actor_get_obscured_region (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; if (!priv->window->shaded) { if (meta_is_wayland_compositor ()) { if (priv->opacity == 0xff) return priv->opaque_region; } else { if (priv->back_pixmap && priv->opacity == 0xff) return priv->opaque_region; } } return NULL; } #if 0 /* Print out a region; useful for debugging */ static void print_region (cairo_region_t *region) { int n_rects; int i; n_rects = cairo_region_num_rectangles (region); g_print ("["); for (i = 0; i < n_rects; i++) { cairo_rectangle_int_t rect; cairo_region_get_rectangle (region, i, &rect); g_print ("+%d+%dx%dx%d ", rect.x, rect.y, rect.width, rect.height); } g_print ("]\n"); } #endif #if 0 /* Dump a region to a PNG file; useful for debugging */ static void see_region (cairo_region_t *region, int width, int height, char *filename) { cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height); cairo_t *cr = cairo_create (surface); gdk_cairo_region (cr, region); cairo_fill (cr); cairo_surface_write_to_png (surface, filename); cairo_destroy (cr); cairo_surface_destroy (surface); } #endif /** * meta_window_actor_set_unobscured_region: * @self: a #MetaWindowActor * @unobscured_region: the region of the screen that isn't completely * obscured. * * Provides a hint as to what areas of the window need to queue * redraws when damaged. Regions not in @unobscured_region are completely obscured. * Unlike meta_window_actor_set_clip_region(), the region here * doesn't take into account any clipping that is in effect while drawing. */ void meta_window_actor_set_unobscured_region (MetaWindowActor *self, cairo_region_t *unobscured_region) { MetaWindowActorPrivate *priv = self->priv; if (priv->unobscured_region) cairo_region_destroy (priv->unobscured_region); if (unobscured_region) priv->unobscured_region = cairo_region_copy (unobscured_region); else priv->unobscured_region = NULL; } /** * meta_window_actor_set_clip_region: * @self: a #MetaWindowActor * @clip_region: the region of the screen that isn't completely * obscured. * * Provides a hint as to what areas of the window need to be * drawn. Regions not in @clip_region are completely obscured or * not drawn in this frame. * This will be set before painting then unset afterwards. */ static void meta_window_actor_set_clip_region (MetaWindowActor *self, cairo_region_t *clip_region) { MetaWindowActorPrivate *priv = self->priv; meta_surface_actor_set_clip_region (priv->surface, clip_region); } /** * meta_window_actor_set_clip_region_beneath: * @self: a #MetaWindowActor * @clip_region: the region of the screen that isn't completely * obscured beneath the main window texture. * * Provides a hint as to what areas need to be drawn *beneath* * the main window texture. This is the relevant clip region * when drawing the shadow, properly accounting for areas of the * shadow hid by the window itself. This will be set before painting * then unset afterwards. */ static void meta_window_actor_set_clip_region_beneath (MetaWindowActor *self, cairo_region_t *beneath_region) { MetaWindowActorPrivate *priv = self->priv; gboolean appears_focused = meta_window_appears_focused (priv->window); if (appears_focused ? priv->focused_shadow : priv->unfocused_shadow) { g_clear_pointer (&priv->shadow_clip, cairo_region_destroy); priv->shadow_clip = cairo_region_copy (beneath_region); if (clip_shadow_under_window (self)) { cairo_region_t *frame_bounds = meta_window_get_frame_bounds (priv->window); cairo_region_subtract (priv->shadow_clip, frame_bounds); } } } static void meta_window_actor_cull_out (MetaCullable *cullable, cairo_region_t *unobscured_region, cairo_region_t *clip_region) { MetaWindowActor *self = META_WINDOW_ACTOR (cullable); if (!meta_is_wayland_compositor ()) { MetaCompScreen *info = meta_screen_get_compositor_data (self->priv->screen); /* Don't do any culling for the unredirected window */ if (self == info->unredirected_window) return; } meta_window_actor_set_unobscured_region (self, unobscured_region); meta_window_actor_set_clip_region (self, clip_region); if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (self)) == 0xff) { cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (self); if (obscured_region) { cairo_region_subtract (unobscured_region, obscured_region); cairo_region_subtract (clip_region, obscured_region); } } meta_window_actor_set_clip_region_beneath (self, clip_region); } static void meta_window_actor_reset_culling (MetaCullable *cullable) { MetaWindowActor *self = META_WINDOW_ACTOR (cullable); MetaWindowActorPrivate *priv = self->priv; meta_surface_actor_set_clip_region (priv->surface, NULL); g_clear_pointer (&priv->shadow_clip, cairo_region_destroy); } static void cullable_iface_init (MetaCullableInterface *iface) { iface->cull_out = meta_window_actor_cull_out; iface->reset_culling = meta_window_actor_reset_culling; } /* When running as a wayland compositor we don't make requests for * replacement pixmaps when resizing windows, we will instead be * asked to attach replacement buffers by the clients. */ static void check_needs_x11_pixmap (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); MetaCompScreen *info = meta_screen_get_compositor_data (screen); Window xwindow = priv->xwindow; if (!priv->needs_pixmap) return; if (!priv->mapped) return; if (xwindow == meta_screen_get_xroot (screen) || xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage))) return; if (priv->x11_size_changed) { meta_window_actor_detach_x11_pixmap (self); priv->x11_size_changed = FALSE; } meta_error_trap_push (display); if (priv->back_pixmap == None) { CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ()); CoglTexture *texture; meta_error_trap_push (display); priv->back_pixmap = XCompositeNameWindowPixmap (xdisplay, xwindow); if (meta_error_trap_pop_with_return (display) != Success) { /* Probably a BadMatch if the window isn't viewable; we could * GrabServer/GetWindowAttributes/NameWindowPixmap/UngrabServer/Sync * to avoid this, but there's no reason to take two round trips * when one will do. (We need that Sync if we want to handle failures * for any reason other than !viewable. That's unlikely, but maybe * we'll BadAlloc or something.) */ priv->back_pixmap = None; } if (priv->back_pixmap == None) { meta_verbose ("Unable to get named pixmap for %p\n", self); goto out; } texture = COGL_TEXTURE (cogl_texture_pixmap_x11_new (ctx, priv->back_pixmap, FALSE, NULL)); if (G_UNLIKELY (!cogl_texture_pixmap_x11_is_using_tfp_extension (COGL_TEXTURE_PIXMAP_X11 (texture)))) g_warning ("NOTE: Not using GLX TFP!\n"); meta_surface_actor_set_texture (META_SURFACE_ACTOR (priv->surface), texture); /* ::size-changed is supposed to refer to meta_window_get_frame_rect(). * Emitting it here works pretty much OK because a new value of the * *input* rect (which is the outer rect with the addition of invisible * borders) forces a new pixmap and we get here. In the rare case where * a change to the window size was exactly balanced by a change to the * invisible borders, we would miss emitting the signal. We would also * emit spurious signals when we get a new pixmap without a new size, * but that should be mostly harmless. */ g_signal_emit (self, signals[SIZE_CHANGED], 0); } priv->needs_pixmap = FALSE; out: meta_error_trap_pop (display); } static void check_needs_shadow (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaShadow *old_shadow = NULL; MetaShadow **shadow_location; gboolean recompute_shadow; gboolean should_have_shadow; gboolean appears_focused; if (!priv->mapped) return; /* Calling meta_window_actor_has_shadow() here at every pre-paint is cheap * and avoids the need to explicitly handle window type changes, which * we would do if tried to keep track of when we might be adding or removing * a shadow more explicitly. We only keep track of changes to the *shape* of * the shadow with priv->recompute_shadow. */ should_have_shadow = meta_window_actor_has_shadow (self); appears_focused = meta_window_appears_focused (priv->window); if (appears_focused) { recompute_shadow = priv->recompute_focused_shadow; priv->recompute_focused_shadow = FALSE; shadow_location = &priv->focused_shadow; } else { recompute_shadow = priv->recompute_unfocused_shadow; priv->recompute_unfocused_shadow = FALSE; shadow_location = &priv->unfocused_shadow; } if (!should_have_shadow || recompute_shadow) { if (*shadow_location != NULL) { old_shadow = *shadow_location; *shadow_location = NULL; } } if (*shadow_location == NULL && should_have_shadow) { if (priv->shadow_shape == NULL) priv->shadow_shape = meta_window_shape_new (priv->shape_region); MetaShadowFactory *factory = meta_shadow_factory_get_default (); const char *shadow_class = meta_window_actor_get_shadow_class (self); cairo_rectangle_int_t shape_bounds; meta_window_actor_get_shape_bounds (self, &shape_bounds); *shadow_location = meta_shadow_factory_get_shadow (factory, priv->shadow_shape, shape_bounds.width, shape_bounds.height, shadow_class, appears_focused); } if (old_shadow != NULL) meta_shadow_unref (old_shadow); } void meta_window_actor_process_x11_damage (MetaWindowActor *self, XDamageNotifyEvent *event) { MetaWindowActorPrivate *priv = self->priv; MetaCompScreen *info = meta_screen_get_compositor_data (priv->screen); gboolean redraw_queued; cairo_region_t *unobscured_region; priv->received_x11_damage = TRUE; if (meta_window_is_fullscreen (priv->window) && g_list_last (info->windows)->data == self && !priv->unredirected) { MetaRectangle window_rect; meta_window_get_frame_rect (priv->window, &window_rect); if (window_rect.x == event->area.x && window_rect.y == event->area.y && window_rect.width == event->area.width && window_rect.height == event->area.height) priv->full_damage_frames_count++; else priv->full_damage_frames_count = 0; if (priv->full_damage_frames_count >= 100) priv->does_full_damage = TRUE; } /* Drop damage event for unredirected windows */ if (priv->unredirected) return; if (is_frozen (self)) { /* The window is frozen due to an effect in progress: we ignore damage * here on the off chance that this will stop the corresponding * texture_from_pixmap from being update. * * needs_damage_all tracks that some unknown damage happened while the * window was frozen so that when the window becomes unfrozen we can * issue a full window update to cover any lost damage. * * It should be noted that this is an unreliable mechanism since it's * quite likely that drivers will aim to provide a zero-copy * implementation of the texture_from_pixmap extension and in those cases * any drawing done to the window is always immediately reflected in the * texture regardless of damage event handling. */ priv->needs_damage_all = TRUE; return; } if (!priv->mapped || priv->needs_pixmap) return; unobscured_region = clutter_actor_has_mapped_clones (CLUTTER_ACTOR (priv->surface)) ? NULL : priv->unobscured_region; redraw_queued = meta_surface_actor_damage_area (priv->surface, event->area.x, event->area.y, event->area.width, event->area.height, unobscured_region); priv->repaint_scheduled = priv->repaint_scheduled || redraw_queued; } void meta_window_actor_process_wayland_damage (MetaWindowActor *self, int x, int y, int width, int height) { MetaWindowActorPrivate *priv = self->priv; cairo_region_t *unobscured_region; gboolean redraw_queued; if (!priv->mapped) return; unobscured_region = clutter_actor_has_mapped_clones (CLUTTER_ACTOR (priv->surface)) ? NULL : priv->unobscured_region; redraw_queued = meta_surface_actor_damage_area (priv->surface, x, y, width, height, unobscured_region); priv->repaint_scheduled = priv->repaint_scheduled || redraw_queued; } void meta_window_actor_sync_visibility (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; if (CLUTTER_ACTOR_IS_VISIBLE (self) != priv->visible) { if (priv->visible) clutter_actor_show (CLUTTER_ACTOR (self)); else clutter_actor_hide (CLUTTER_ACTOR (self)); } } static cairo_region_t * scan_visible_region (guchar *mask_data, int stride, cairo_region_t *scan_area) { int i, n_rects = cairo_region_num_rectangles (scan_area); MetaRegionBuilder builder; meta_region_builder_init (&builder); for (i = 0; i < n_rects; i++) { int x, y; cairo_rectangle_int_t rect; cairo_region_get_rectangle (scan_area, i, &rect); for (y = rect.y; y < (rect.y + rect.height); y++) { for (x = rect.x; x < (rect.x + rect.width); x++) { int x2 = x; while (mask_data[y * stride + x2] == 255 && x2 < (rect.x + rect.width)) x2++; if (x2 > x) { meta_region_builder_add_rectangle (&builder, x, y, x2 - x, 1); x = x2; } } } } return meta_region_builder_finish (&builder); } static void build_and_scan_frame_mask (MetaWindowActor *self, cairo_rectangle_int_t *client_area, cairo_region_t *shape_region) { MetaWindowActorPrivate *priv = self->priv; guchar *mask_data; guint tex_width, tex_height; MetaShapedTexture *stex; CoglTexture *paint_tex, *mask_texture; int stride; cairo_t *cr; cairo_surface_t *surface; stex = meta_surface_actor_get_texture (priv->surface); g_return_if_fail (stex); meta_shaped_texture_set_mask_texture (stex, NULL); paint_tex = meta_shaped_texture_get_texture (stex); if (paint_tex == NULL) return; tex_width = cogl_texture_get_width (paint_tex); tex_height = cogl_texture_get_height (paint_tex); stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8, tex_width); /* Create data for an empty image */ mask_data = g_malloc0 (stride * tex_height); surface = cairo_image_surface_create_for_data (mask_data, CAIRO_FORMAT_A8, tex_width, tex_height, stride); cr = cairo_create (surface); gdk_cairo_region (cr, shape_region); cairo_fill (cr); if (priv->window->frame != NULL) { cairo_region_t *frame_paint_region, *scanned_region; cairo_rectangle_int_t rect = { 0, 0, tex_width, tex_height }; /* Make sure we don't paint the frame over the client window. */ frame_paint_region = cairo_region_create_rectangle (&rect); cairo_region_subtract_rectangle (frame_paint_region, client_area); gdk_cairo_region (cr, frame_paint_region); cairo_clip (cr); meta_frame_get_mask (priv->window->frame, cr); cairo_surface_flush (surface); scanned_region = scan_visible_region (mask_data, stride, frame_paint_region); cairo_region_union (shape_region, scanned_region); cairo_region_destroy (scanned_region); cairo_region_destroy (frame_paint_region); } cairo_destroy (cr); cairo_surface_destroy (surface); if (meta_texture_rectangle_check (paint_tex)) { mask_texture = meta_texture_rectangle_new (tex_width, tex_height, COGL_PIXEL_FORMAT_A_8, COGL_PIXEL_FORMAT_A_8, stride, mask_data, NULL /* error */); } else { /* Note: we don't allow slicing for this texture because we * need to use it with multi-texturing which doesn't support * sliced textures */ mask_texture = cogl_texture_new_from_data (tex_width, tex_height, COGL_TEXTURE_NO_SLICING, COGL_PIXEL_FORMAT_A_8, COGL_PIXEL_FORMAT_ANY, stride, mask_data); } meta_shaped_texture_set_mask_texture (stex, mask_texture); cogl_object_unref (mask_texture); g_free (mask_data); } static void meta_window_actor_update_shape_region (MetaWindowActor *self, cairo_rectangle_int_t *client_area) { MetaWindowActorPrivate *priv = self->priv; cairo_region_t *region = NULL; if (priv->window->frame != NULL && priv->window->shape_region != NULL) { region = cairo_region_copy (priv->window->shape_region); cairo_region_translate (region, client_area->x, client_area->y); } else if (priv->window->shape_region != NULL) { region = cairo_region_reference (priv->window->shape_region); } else { /* If we don't have a shape on the server, that means that * we have an implicit shape of one rectangle covering the * entire window. */ region = cairo_region_create_rectangle (client_area); } if ((priv->window->shape_region != NULL) || (priv->window->frame != NULL)) build_and_scan_frame_mask (self, client_area, region); g_clear_pointer (&priv->shape_region, cairo_region_destroy); priv->shape_region = region; g_clear_pointer (&priv->shadow_shape, meta_window_shape_unref); meta_window_actor_invalidate_shadow (self); } static void meta_window_actor_update_input_region (MetaWindowActor *self, cairo_rectangle_int_t *client_area) { MetaWindowActorPrivate *priv = self->priv; MetaShapedTexture *stex = meta_surface_actor_get_texture (priv->surface); cairo_region_t *region = NULL; if (!stex) return; if (priv->window->frame != NULL && priv->window->input_region != NULL) { region = meta_frame_get_frame_bounds (priv->window->frame); cairo_region_subtract_rectangle (region, client_area); /* input_region is in client window coordinates, so translate the * input region into that coordinate system and back */ cairo_region_translate (region, -client_area->x, -client_area->y); cairo_region_union (region, priv->window->input_region); cairo_region_translate (region, client_area->x, client_area->y); } else if (priv->window->input_region != NULL) { region = cairo_region_reference (priv->window->input_region); } else { /* If we don't have a shape on the server, that means that * we have an implicit shape of one rectangle covering the * entire window. */ region = cairo_region_create_rectangle (client_area); } meta_shaped_texture_set_input_shape_region (stex, region); cairo_region_destroy (region); } static void meta_window_actor_update_opaque_region (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaShapedTexture *stex; stex = meta_surface_actor_get_texture (priv->surface); if (!stex) return; g_clear_pointer (&priv->opaque_region, cairo_region_destroy); if (priv->argb32 && priv->window->opaque_region != NULL) { MetaFrameBorders borders; meta_frame_calc_borders (priv->window->frame, &borders); /* The opaque region is defined to be a part of the * window which ARGB32 will always paint with opaque * pixels. For these regions, we want to avoid painting * windows and shadows beneath them. * * If the client gives bad coordinates where it does not * fully paint, the behavior is defined by the specification * to be undefined, and considered a client bug. In mutter's * case, graphical glitches will occur. */ priv->opaque_region = cairo_region_copy (priv->window->opaque_region); cairo_region_translate (priv->opaque_region, borders.total.left, borders.total.top); cairo_region_intersect (priv->opaque_region, priv->shape_region); } else if (priv->argb32) priv->opaque_region = NULL; else priv->opaque_region = cairo_region_reference (priv->shape_region); meta_shaped_texture_set_opaque_region (stex, priv->opaque_region); } static void check_needs_reshape (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaFrameBorders borders; cairo_rectangle_int_t client_area; if (!priv->mapped) return; if (!priv->needs_reshape) return; meta_frame_calc_borders (priv->window->frame, &borders); client_area.x = borders.total.left; client_area.y = borders.total.top; client_area.width = priv->window->rect.width; if (priv->window->shaded) client_area.height = 0; else client_area.height = priv->window->rect.height; meta_window_actor_update_shape_region (self, &client_area); meta_window_actor_update_input_region (self, &client_area); meta_window_actor_update_opaque_region (self); priv->needs_reshape = FALSE; } void meta_window_actor_update_shape (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; priv->needs_reshape = TRUE; if (is_frozen (self)) return; clutter_actor_queue_redraw (CLUTTER_ACTOR (priv->surface)); } void meta_window_actor_attach_wayland_buffer (MetaWindowActor *self, MetaWaylandBuffer *buffer) { MetaWindowActorPrivate *priv = self->priv; meta_surface_actor_attach_wayland_buffer (priv->surface, buffer); } static void meta_window_actor_handle_updates (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); if (is_frozen (self)) { /* The window is frozen due to a pending animation: we'll wait until * the animation finishes to reshape and repair the window */ return; } if (!meta_is_wayland_compositor ()) { if (priv->unredirected) { /* Nothing to do here until/if the window gets redirected again */ return; } if (priv->received_x11_damage) { meta_error_trap_push (display); XDamageSubtract (xdisplay, priv->damage, None, None); meta_error_trap_pop (display); /* We need to make sure that any X drawing that happens before the * XDamageSubtract() above is visible to subsequent GL rendering; * the only standardized way to do this is EXT_x11_sync_object, * which isn't yet widely available. For now, we count on details * of Xorg and the open source drivers, and hope for the best * otherwise. * * Xorg and open source driver specifics: * * The X server makes sure to flush drawing to the kernel before * sending out damage events, but since we use DamageReportBoundingBox * there may be drawing between the last damage event and the * XDamageSubtract() that needs to be flushed as well. * * Xorg always makes sure that drawing is flushed to the kernel * before writing events or responses to the client, so any round trip * request at this point is sufficient to flush the GLX buffers. */ XSync (xdisplay, False); priv->received_x11_damage = FALSE; } check_needs_x11_pixmap (self); } check_needs_reshape (self); check_needs_shadow (self); } void meta_window_actor_pre_paint (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; GList *l; meta_window_actor_handle_updates (self); for (l = priv->frames; l != NULL; l = l->next) { FrameData *frame = l->data; if (frame->frame_counter == 0) { CoglOnscreen *onscreen = COGL_ONSCREEN (cogl_get_draw_framebuffer()); frame->frame_counter = cogl_onscreen_get_frame_counter (onscreen); } } } static void do_send_frame_drawn (MetaWindowActor *self, FrameData *frame) { MetaWindowActorPrivate *priv = self->priv; MetaScreen *screen = priv->screen; MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); XClientMessageEvent ev = { 0, }; frame->frame_drawn_time = meta_compositor_monotonic_time_to_server_time (display, g_get_monotonic_time ()); priv->frame_drawn_time = frame->frame_drawn_time; ev.type = ClientMessage; ev.window = meta_window_get_xwindow (priv->window); ev.message_type = display->atom__NET_WM_FRAME_DRAWN; ev.format = 32; ev.data.l[0] = frame->sync_request_serial & G_GUINT64_CONSTANT(0xffffffff); ev.data.l[1] = frame->sync_request_serial >> 32; ev.data.l[2] = frame->frame_drawn_time & G_GUINT64_CONSTANT(0xffffffff); ev.data.l[3] = frame->frame_drawn_time >> 32; meta_error_trap_push (display); XSendEvent (xdisplay, ev.window, False, 0, (XEvent*) &ev); XFlush (xdisplay); meta_error_trap_pop (display); } void meta_window_actor_post_paint (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; priv->repaint_scheduled = FALSE; /* This window had damage, but wasn't actually redrawn because * it is obscured. So we should wait until timer expiration * before sending _NET_WM_FRAME_* messages. */ if (priv->send_frame_messages_timer != 0) return; if (priv->needs_frame_drawn) { do_send_frame_drawn (self, priv->frames->data); priv->needs_frame_drawn = FALSE; } } static void do_send_frame_timings (MetaWindowActor *self, FrameData *frame, gint refresh_interval, gint64 presentation_time) { MetaWindowActorPrivate *priv = self->priv; MetaDisplay *display = meta_screen_get_display (priv->screen); Display *xdisplay = meta_display_get_xdisplay (display); XClientMessageEvent ev = { 0, }; ev.type = ClientMessage; ev.window = meta_window_get_xwindow (priv->window); ev.message_type = display->atom__NET_WM_FRAME_TIMINGS; ev.format = 32; ev.data.l[0] = frame->sync_request_serial & G_GUINT64_CONSTANT(0xffffffff); ev.data.l[1] = frame->sync_request_serial >> 32; if (presentation_time != 0) { gint64 presentation_time_server = meta_compositor_monotonic_time_to_server_time (display, presentation_time); gint64 presentation_time_offset = presentation_time_server - frame->frame_drawn_time; if (presentation_time_offset == 0) presentation_time_offset = 1; if ((gint32)presentation_time_offset == presentation_time_offset) ev.data.l[2] = presentation_time_offset; } ev.data.l[3] = refresh_interval; ev.data.l[4] = 1000 * META_SYNC_DELAY; meta_error_trap_push (display); XSendEvent (xdisplay, ev.window, False, 0, (XEvent*) &ev); XFlush (xdisplay); meta_error_trap_pop (display); } static void send_frame_timings (MetaWindowActor *self, FrameData *frame, CoglFrameInfo *frame_info, gint64 presentation_time) { float refresh_rate; int refresh_interval; refresh_rate = cogl_frame_info_get_refresh_rate (frame_info); /* 0.0 is a flag for not known, but sanity-check against other odd numbers */ if (refresh_rate >= 1.0) refresh_interval = (int) (0.5 + 1000000 / refresh_rate); else refresh_interval = 0; do_send_frame_timings (self, frame, refresh_interval, presentation_time); } void meta_window_actor_frame_complete (MetaWindowActor *self, CoglFrameInfo *frame_info, gint64 presentation_time) { MetaWindowActorPrivate *priv = self->priv; GList *l; for (l = priv->frames; l;) { GList *l_next = l->next; FrameData *frame = l->data; if (frame->frame_counter == cogl_frame_info_get_frame_counter (frame_info)) { if (frame->frame_drawn_time != 0) { priv->frames = g_list_delete_link (priv->frames, l); send_frame_timings (self, frame, frame_info, presentation_time); frame_data_free (frame); } } l = l_next; } } void meta_window_actor_invalidate_shadow (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; priv->recompute_focused_shadow = TRUE; priv->recompute_unfocused_shadow = TRUE; if (is_frozen (self)) return; clutter_actor_queue_redraw (CLUTTER_ACTOR (self)); } void meta_window_actor_update_opacity (MetaWindowActor *self) { MetaWindowActorPrivate *priv = self->priv; MetaDisplay *display = meta_screen_get_display (priv->screen); MetaCompositor *compositor = meta_display_get_compositor (display); Window xwin = meta_window_get_xwindow (priv->window); gulong value; guint8 opacity; if (meta_prop_get_cardinal (display, xwin, compositor->atom_net_wm_window_opacity, &value)) { opacity = (guint8)((gfloat)value * 255.0 / ((gfloat)0xffffffff)); } else opacity = 255; self->priv->opacity = opacity; clutter_actor_set_opacity (CLUTTER_ACTOR (self->priv->surface), opacity); } void meta_window_actor_set_updates_frozen (MetaWindowActor *self, gboolean updates_frozen) { /* On wayland we shouldn't need to ever freeze updates... */ if (!meta_is_wayland_compositor ()) { MetaWindowActorPrivate *priv = self->priv; updates_frozen = updates_frozen != FALSE; if (priv->updates_frozen != updates_frozen) { priv->updates_frozen = updates_frozen; if (updates_frozen) meta_window_actor_freeze (self); else meta_window_actor_thaw (self); } } }