/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /** * SECTION:compositor * @Title: MetaCompositor * @Short_Description: Compositor API * * At a high-level, a window is not-visible or visible. When a * window is added (with meta_compositor_add_window()) it is not visible. * meta_compositor_show_window() indicates a transition from not-visible to * visible. Some of the reasons for this: * * - Window newly created * - Window is unminimized * - Window is moved to the current desktop * - Window was made sticky * * meta_compositor_hide_window() indicates that the window has transitioned from * visible to not-visible. Some reasons include: * * - Window was destroyed * - Window is minimized * - Window is moved to a different desktop * - Window no longer sticky. * * Note that combinations are possible - a window might have first * been minimized and then moved to a different desktop. The 'effect' parameter * to meta_compositor_show_window() and meta_compositor_hide_window() is a hint * as to the appropriate effect to show the user and should not * be considered to be indicative of a state change. * * When the active workspace is changed, meta_compositor_switch_workspace() is * called first, then meta_compositor_show_window() and * meta_compositor_hide_window() are called individually for each window * affected, with an effect of META_COMP_EFFECT_NONE. * If hiding windows will affect the switch workspace animation, the * compositor needs to delay hiding the windows until the switch * workspace animation completes. * * # Containers # * * There's two containers in the stage that are used to place window actors, here * are listed in the order in which they are painted: * * - window group, accessible with meta_get_window_group_for_display() * - top window group, accessible with meta_get_top_window_group_for_display() * * Mutter will place actors representing windows in the window group, except for * override-redirect windows (ie. popups and menus) which will be placed in the * top window group. */ #include "config.h" #include "compositor/compositor-private.h" #include #include "backends/x11/meta-backend-x11.h" #include "backends/x11/meta-event-x11.h" #include "backends/x11/meta-stage-x11.h" #include "clutter/clutter-mutter.h" #include "cogl/cogl.h" #include "compositor/meta-later-private.h" #include "compositor/meta-window-actor-x11.h" #include "compositor/meta-window-actor-private.h" #include "compositor/meta-window-group-private.h" #include "core/frame.h" #include "core/util-private.h" #include "core/window-private.h" #include "meta/compositor-mutter.h" #include "meta/main.h" #include "meta/meta-backend.h" #include "meta/meta-background-actor.h" #include "meta/meta-background-group.h" #include "meta/meta-context.h" #include "meta/meta-shadow-factory.h" #include "meta/meta-x11-errors.h" #include "meta/prefs.h" #include "meta/window.h" #include "x11/meta-x11-display-private.h" #ifdef HAVE_WAYLAND #include "compositor/meta-window-actor-wayland.h" #include "wayland/meta-wayland-private.h" #endif enum { PROP_0, PROP_DISPLAY, PROP_BACKEND, N_PROPS }; static GParamSpec *obj_props[N_PROPS] = { NULL, }; typedef struct _MetaCompositorPrivate { GObject parent; MetaDisplay *display; MetaBackend *backend; gulong stage_presented_id; gulong before_paint_handler_id; gulong after_paint_handler_id; gulong window_visibility_updated_id; gulong monitors_changed_internal_id; int64_t server_time_query_time; int64_t server_time_offset; gboolean server_time_is_monotonic_time; ClutterActor *window_group; ClutterActor *top_window_group; ClutterActor *feedback_group; GList *windows; CoglContext *context; gboolean needs_update_top_window_actors; MetaWindowActor *top_window_actor; gulong top_window_actor_destroy_id; int disable_unredirect_count; int switch_workspace_in_progress; gboolean frame_in_progress; MetaPluginManager *plugin_mgr; MetaLaters *laters; } MetaCompositorPrivate; G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (MetaCompositor, meta_compositor, G_TYPE_OBJECT) static GQuark quark_compositor_view; static void on_presented (ClutterStage *stage, ClutterStageView *stage_view, ClutterFrameInfo *frame_info, MetaCompositor *compositor); static void on_top_window_actor_destroyed (MetaWindowActor *window_actor, MetaCompositor *compositor); static void sync_actor_stacking (MetaCompositor *compositor); static void meta_finish_workspace_switch (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; /* Finish hiding and showing actors for the new workspace */ for (l = priv->windows; l; l = l->next) meta_window_actor_sync_visibility (l->data); /* Fix up stacking order. */ sync_actor_stacking (compositor); } void meta_switch_workspace_completed (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); /* FIXME -- must redo stacking order */ priv->switch_workspace_in_progress--; if (priv->switch_workspace_in_progress < 0) { g_warning ("Error in workspace_switch accounting!"); priv->switch_workspace_in_progress = 0; } if (!priv->switch_workspace_in_progress) meta_finish_workspace_switch (compositor); } void meta_compositor_destroy (MetaCompositor *compositor) { g_object_run_dispose (G_OBJECT (compositor)); g_object_unref (compositor); } /* compat helper */ static MetaCompositor * get_compositor_for_display (MetaDisplay *display) { return display->compositor; } /** * meta_get_stage_for_display: * @display: a #MetaDisplay * * Returns: (transfer none): The #ClutterStage for the display */ ClutterActor * meta_get_stage_for_display (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; g_return_val_if_fail (display, NULL); compositor = get_compositor_for_display (display); g_return_val_if_fail (compositor, NULL); priv = meta_compositor_get_instance_private (compositor); return meta_backend_get_stage (priv->backend); } /** * meta_get_window_group_for_display: * @display: a #MetaDisplay * * Returns: (transfer none): The window group corresponding to @display */ ClutterActor * meta_get_window_group_for_display (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; g_return_val_if_fail (display, NULL); compositor = get_compositor_for_display (display); g_return_val_if_fail (compositor, NULL); priv = meta_compositor_get_instance_private (compositor); return priv->window_group; } /** * meta_get_top_window_group_for_display: * @display: a #MetaDisplay * * Returns: (transfer none): The top window group corresponding to @display */ ClutterActor * meta_get_top_window_group_for_display (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; g_return_val_if_fail (display, NULL); compositor = get_compositor_for_display (display); g_return_val_if_fail (compositor, NULL); priv = meta_compositor_get_instance_private (compositor); return priv->top_window_group; } /** * meta_compositor_get_feedback_group: * @compositor: a #MetaCompositor * * Returns: (transfer none): The feedback group corresponding to @display */ ClutterActor * meta_compositor_get_feedback_group (MetaCompositor *compositor) { MetaCompositorPrivate *priv; g_return_val_if_fail (compositor, NULL); priv = meta_compositor_get_instance_private (compositor); return priv->feedback_group; } /** * meta_get_feedback_group_for_display: * @display: a #MetaDisplay * * Returns: (transfer none): The feedback group corresponding to @display */ ClutterActor * meta_get_feedback_group_for_display (MetaDisplay *display) { MetaCompositor *compositor; g_return_val_if_fail (display, NULL); compositor = get_compositor_for_display (display); return meta_compositor_get_feedback_group (compositor); } /** * meta_get_window_actors: * @display: a #MetaDisplay * * Returns: (transfer none) (element-type Clutter.Actor): The set of #MetaWindowActor on @display */ GList * meta_get_window_actors (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; g_return_val_if_fail (display, NULL); compositor = get_compositor_for_display (display); g_return_val_if_fail (compositor, NULL); priv = meta_compositor_get_instance_private (compositor); return priv->windows; } void meta_focus_stage_window (MetaDisplay *display, guint32 timestamp) { ClutterStage *stage; Window window; stage = CLUTTER_STAGE (meta_get_stage_for_display (display)); if (!stage) return; window = meta_x11_get_stage_window (stage); if (window == None) return; meta_x11_display_set_input_focus_xwindow (display->x11_display, window, timestamp); } gboolean meta_stage_is_focused (MetaDisplay *display) { ClutterStage *stage; Window window; if (meta_is_wayland_compositor ()) return TRUE; stage = CLUTTER_STAGE (meta_get_stage_for_display (display)); if (!stage) return FALSE; window = meta_x11_get_stage_window (stage); if (window == None) return FALSE; return (display->x11_display->focus_xwindow == window); } void meta_compositor_grab_begin (MetaCompositor *compositor) { META_COMPOSITOR_GET_CLASS (compositor)->grab_begin (compositor); } void meta_compositor_grab_end (MetaCompositor *compositor) { META_COMPOSITOR_GET_CLASS (compositor)->grab_end (compositor); } static void redirect_windows (MetaCompositor *compositor, MetaX11Display *x11_display) { 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); guint n_retries; guint max_retries; if (meta_context_is_replacing (context)) max_retries = 5; else max_retries = 1; n_retries = 0; /* Some compositors (like old versions of Mutter) might not properly unredirect * subwindows before destroying the WM selection window; so we wait a while * for such a compositor to exit before giving up. */ while (TRUE) { meta_x11_error_trap_push (x11_display); XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual); XSync (xdisplay, FALSE); if (!meta_x11_error_trap_pop_with_return (x11_display)) break; if (n_retries == max_retries) { /* This probably means that a non-WM compositor like xcompmgr is running; * we have no way to get it to exit */ meta_fatal (_("Another compositing manager is already running on screen %i on display “%s”."), screen_number, x11_display->name); } n_retries++; g_usleep (G_USEC_PER_SEC); } } void meta_compositor_redirect_x11_windows (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaDisplay *display = priv->display; if (display->x11_display) redirect_windows (compositor, display->x11_display); } static MetaCompositorView * meta_compositor_create_view (MetaCompositor *compositor, ClutterStageView *stage_view) { return META_COMPOSITOR_GET_CLASS (compositor)->create_view (compositor, stage_view); } gboolean meta_compositor_do_manage (MetaCompositor *compositor, GError **error) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaDisplay *display = priv->display; MetaBackend *backend = priv->backend; ClutterActor *stage = meta_backend_get_stage (backend); priv->stage_presented_id = g_signal_connect (stage, "presented", G_CALLBACK (on_presented), compositor); priv->window_group = meta_window_group_new (display); priv->top_window_group = meta_window_group_new (display); priv->feedback_group = meta_window_group_new (display); clutter_actor_add_child (stage, priv->window_group); clutter_actor_add_child (stage, priv->top_window_group); clutter_actor_add_child (stage, priv->feedback_group); if (!META_COMPOSITOR_GET_CLASS (compositor)->manage (compositor, error)) return FALSE; priv->plugin_mgr = meta_plugin_manager_new (compositor); meta_plugin_manager_start (priv->plugin_mgr); return TRUE; } void meta_compositor_manage (MetaCompositor *compositor) { GError *error = NULL; if (!meta_compositor_do_manage (compositor, &error)) g_error ("Compositor failed to manage display: %s", error->message); } static void meta_compositor_real_unmanage (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); g_clear_signal_handler (&priv->top_window_actor_destroy_id, priv->top_window_actor); g_clear_pointer (&priv->window_group, clutter_actor_destroy); g_clear_pointer (&priv->top_window_group, clutter_actor_destroy); g_clear_pointer (&priv->feedback_group, clutter_actor_destroy); } void meta_compositor_unmanage (MetaCompositor *compositor) { META_COMPOSITOR_GET_CLASS (compositor)->unmanage (compositor); } void meta_compositor_add_window (MetaCompositor *compositor, MetaWindow *window) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaWindowActor *window_actor; ClutterActor *window_group; GType window_actor_type = G_TYPE_INVALID; switch (window->client_type) { case META_WINDOW_CLIENT_TYPE_X11: window_actor_type = META_TYPE_WINDOW_ACTOR_X11; break; #ifdef HAVE_WAYLAND case META_WINDOW_CLIENT_TYPE_WAYLAND: window_actor_type = META_TYPE_WINDOW_ACTOR_WAYLAND; break; #endif default: g_return_if_reached (); } window_actor = g_object_new (window_actor_type, "meta-window", window, "show-on-set-parent", FALSE, NULL); if (window->layer == META_LAYER_OVERRIDE_REDIRECT) window_group = priv->top_window_group; else window_group = priv->window_group; clutter_actor_add_child (window_group, CLUTTER_ACTOR (window_actor)); /* Initial position in the stack is arbitrary; stacking will be synced * before we first paint. */ priv->windows = g_list_append (priv->windows, window_actor); sync_actor_stacking (compositor); } static void meta_compositor_real_remove_window (MetaCompositor *compositor, MetaWindow *window) { MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_queue_destroy (window_actor); } void meta_compositor_remove_window (MetaCompositor *compositor, MetaWindow *window) { META_COMPOSITOR_GET_CLASS (compositor)->remove_window (compositor, window); } void meta_compositor_remove_window_actor (MetaCompositor *compositor, MetaWindowActor *window_actor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); priv->windows = g_list_remove (priv->windows, window_actor); } void meta_compositor_sync_updates_frozen (MetaCompositor *compositor, MetaWindow *window) { MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_sync_updates_frozen (window_actor); } void meta_compositor_queue_frame_drawn (MetaCompositor *compositor, MetaWindow *window, gboolean no_delay_frame) { MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_queue_frame_drawn (window_actor, no_delay_frame); } void meta_compositor_window_shape_changed (MetaCompositor *compositor, MetaWindow *window) { MetaWindowActor *window_actor; window_actor = meta_window_actor_from_window (window); if (!window_actor) return; meta_window_actor_x11_update_shape (META_WINDOW_ACTOR_X11 (window_actor)); } void meta_compositor_window_opacity_changed (MetaCompositor *compositor, MetaWindow *window) { MetaWindowActor *window_actor; window_actor = meta_window_actor_from_window (window); if (!window_actor) return; meta_window_actor_update_opacity (window_actor); } static void invalidate_top_window_actor_for_views (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); g_assert (!priv->frame_in_progress); priv->needs_update_top_window_actors = TRUE; } void meta_compositor_window_actor_stage_views_changed (MetaCompositor *compositor) { invalidate_top_window_actor_for_views (compositor); } gboolean meta_compositor_filter_keybinding (MetaCompositor *compositor, MetaKeyBinding *binding) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return meta_plugin_manager_filter_keybinding (priv->plugin_mgr, binding); } void meta_compositor_show_window (MetaCompositor *compositor, MetaWindow *window, MetaCompEffect effect) { MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_show (window_actor, effect); } void meta_compositor_hide_window (MetaCompositor *compositor, MetaWindow *window, MetaCompEffect effect) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_hide (window_actor, effect); meta_stack_tracker_queue_sync_stack (priv->display->stack_tracker); } void meta_compositor_size_change_window (MetaCompositor *compositor, MetaWindow *window, MetaSizeChange which_change, MetaRectangle *old_frame_rect, MetaRectangle *old_buffer_rect) { MetaWindowActor *window_actor = meta_window_actor_from_window (window); meta_window_actor_size_change (window_actor, which_change, old_frame_rect, old_buffer_rect); } void meta_compositor_switch_workspace (MetaCompositor *compositor, MetaWorkspace *from, MetaWorkspace *to, MetaMotionDirection direction) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); gint to_indx, from_indx; to_indx = meta_workspace_index (to); from_indx = meta_workspace_index (from); priv->switch_workspace_in_progress++; if (!meta_plugin_manager_switch_workspace (priv->plugin_mgr, from_indx, to_indx, direction)) { priv->switch_workspace_in_progress--; /* We have to explicitly call this to fix up stacking order of the * actors; this is because the abs stacking position of actors does not * necessarily change during the window hiding/unhiding, only their * relative position toward the destkop window. */ meta_finish_workspace_switch (compositor); } } static void sync_actor_stacking (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *children; GList *expected_window_node; GList *tmp; GList *old; GList *backgrounds; gboolean has_windows; gboolean reordered; /* NB: The first entries in the lists are stacked the lowest */ /* Restacking will trigger full screen redraws, so it's worth a * little effort to make sure we actually need to restack before * we go ahead and do it */ children = clutter_actor_get_children (priv->window_group); has_windows = FALSE; reordered = FALSE; /* We allow for actors in the window group other than the actors we * know about, but it's up to a plugin to try and keep them stacked correctly * (we really need extra API to make that reliable.) */ /* First we collect a list of all backgrounds, and check if they're at the * bottom. Then we check if the window actors are in the correct sequence */ backgrounds = NULL; expected_window_node = priv->windows; for (old = children; old != NULL; old = old->next) { ClutterActor *actor = old->data; if (META_IS_BACKGROUND_GROUP (actor) || META_IS_BACKGROUND_ACTOR (actor)) { backgrounds = g_list_prepend (backgrounds, actor); if (has_windows) reordered = TRUE; } else if (META_IS_WINDOW_ACTOR (actor) && !reordered) { has_windows = TRUE; if (expected_window_node != NULL && actor == expected_window_node->data) expected_window_node = expected_window_node->next; else reordered = TRUE; } } g_list_free (children); if (!reordered) { g_list_free (backgrounds); return; } /* reorder the actors by lowering them in turn to the bottom of the stack. * windows first, then background. * * We reorder the actors even if they're not parented to the window group, * to allow stacking to work with intermediate actors (eg during effects) */ for (tmp = g_list_last (priv->windows); tmp != NULL; tmp = tmp->prev) { ClutterActor *actor = tmp->data, *parent; parent = clutter_actor_get_parent (actor); clutter_actor_set_child_below_sibling (parent, actor, NULL); } /* we prepended the backgrounds above so the last actor in the list * should get lowered to the bottom last. */ for (tmp = backgrounds; tmp != NULL; tmp = tmp->next) { ClutterActor *actor = tmp->data, *parent; parent = clutter_actor_get_parent (actor); clutter_actor_set_child_below_sibling (parent, actor, NULL); } g_list_free (backgrounds); } /* * Find the top most window that is visible on the screen. The intention of * this is to avoid offscreen windows that isn't actually part of the visible * desktop (such as the UI frames override redirect window). */ static void update_top_window_actor (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; MetaWindowActor *top_window_actor = NULL; for (l = g_list_last (priv->windows); l; l = l->prev) { MetaWindowActor *window_actor = l->data; MetaWindow *window = meta_window_actor_get_meta_window (window_actor); MetaRectangle buffer_rect; MetaRectangle display_rect = { 0 }; if (!window->visible_to_compositor) continue; meta_window_get_buffer_rect (window, &buffer_rect); meta_display_get_size (priv->display, &display_rect.width, &display_rect.height); if (meta_rectangle_overlap (&display_rect, &buffer_rect)) { top_window_actor = window_actor; break; } } if (priv->top_window_actor == top_window_actor) return; g_clear_signal_handler (&priv->top_window_actor_destroy_id, priv->top_window_actor); priv->top_window_actor = top_window_actor; if (priv->top_window_actor) { priv->top_window_actor_destroy_id = g_signal_connect (priv->top_window_actor, "destroy", G_CALLBACK (on_top_window_actor_destroyed), compositor); } } static void on_top_window_actor_destroyed (MetaWindowActor *window_actor, MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); priv->top_window_actor = NULL; priv->top_window_actor_destroy_id = 0; priv->windows = g_list_remove (priv->windows, window_actor); meta_stack_tracker_queue_sync_stack (priv->display->stack_tracker); } void meta_compositor_sync_stack (MetaCompositor *compositor, GList *stack) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *old_stack; /* This is painful because hidden windows that we are in the process * of animating out of existence. They'll be at the bottom of the * stack of X windows, but we want to leave them in their old position * until the animation effect finishes. */ /* Sources: first window is the highest */ stack = g_list_copy (stack); /* The new stack of MetaWindow */ old_stack = g_list_reverse (priv->windows); /* The old stack of MetaWindowActor */ priv->windows = NULL; while (TRUE) { MetaWindowActor *old_actor = NULL, *stack_actor = NULL, *actor; MetaWindow *old_window = NULL, *stack_window = NULL, *window; /* Find the remaining top actor in our existing stack (ignoring * windows that have been hidden and are no longer animating) */ while (old_stack) { old_actor = old_stack->data; old_window = meta_window_actor_get_meta_window (old_actor); if ((old_window->hidden || old_window->unmanaging) && !meta_window_actor_effect_in_progress (old_actor)) { old_stack = g_list_delete_link (old_stack, old_stack); old_actor = NULL; } else break; } /* And the remaining top actor in the new stack */ while (stack) { stack_window = stack->data; stack_actor = meta_window_actor_from_window (stack_window); if (!stack_actor) { meta_verbose ("Failed to find corresponding MetaWindowActor " "for window %s", meta_window_get_description (stack_window)); stack = g_list_delete_link (stack, stack); } else break; } if (!old_actor && !stack_actor) /* Nothing more to stack */ break; /* We usually prefer the window in the new stack, but if if we * found a hidden window in the process of being animated out * of existence in the old stack we use that instead. We've * filtered out non-animating hidden windows above. */ if (old_actor && (!stack_actor || old_window->hidden || old_window->unmanaging)) { actor = old_actor; window = old_window; } else { actor = stack_actor; window = stack_window; } /* OK, we know what actor we want next. Add it to our window * list, and remove it from both source lists. (It will * be at the front of at least one, hopefully it will be * near the front of the other.) */ priv->windows = g_list_prepend (priv->windows, actor); stack = g_list_remove (stack, window); old_stack = g_list_remove (old_stack, actor); } sync_actor_stacking (compositor); update_top_window_actor (compositor); invalidate_top_window_actor_for_views (compositor); } void meta_compositor_sync_window_geometry (MetaCompositor *compositor, MetaWindow *window, gboolean did_placement) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaWindowActor *window_actor = meta_window_actor_from_window (window); MetaWindowActorChanges changes; changes = meta_window_actor_sync_actor_geometry (window_actor, did_placement); if (changes & META_WINDOW_ACTOR_CHANGE_SIZE) meta_plugin_manager_event_size_changed (priv->plugin_mgr, window_actor); } static void maybe_update_top_window_actor_for_views (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterStage *stage; GList *l; if (!priv->needs_update_top_window_actors) return; priv->needs_update_top_window_actors = FALSE; COGL_TRACE_BEGIN_SCOPED (UpdateTopWindowActorForViews, "Compositor (update top window actors)"); stage = CLUTTER_STAGE (meta_backend_get_stage (priv->backend)); for (l = clutter_stage_peek_stage_views (stage); l; l = l->next) { ClutterStageView *stage_view = l->data; MetaCompositorView *compositor_view; compositor_view = g_object_get_qdata (G_OBJECT (stage_view), quark_compositor_view); g_assert (compositor_view != NULL); meta_compositor_view_update_top_window_actor (compositor_view, priv->windows); } } static void meta_compositor_ensure_compositor_views (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterStage *stage = CLUTTER_STAGE (meta_backend_get_stage (priv->backend)); GList *l; for (l = clutter_stage_peek_stage_views (stage); l; l = l->next) { ClutterStageView *stage_view = l->data; MetaCompositorView *compositor_view; compositor_view = g_object_get_qdata (G_OBJECT (stage_view), quark_compositor_view); if (compositor_view) continue; compositor_view = meta_compositor_create_view (compositor, stage_view); g_object_set_qdata_full (G_OBJECT (stage_view), quark_compositor_view, compositor_view, g_object_unref); } } static void on_presented (ClutterStage *stage, ClutterStageView *stage_view, ClutterFrameInfo *frame_info, MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); int64_t presentation_time = frame_info->presentation_time; GList *l; for (l = priv->windows; l; l = l->next) { ClutterActor *actor = l->data; GList *actor_stage_views; actor_stage_views = clutter_actor_peek_stage_views (actor); if (g_list_find (actor_stage_views, stage_view)) { meta_window_actor_frame_complete (META_WINDOW_ACTOR (actor), frame_info, presentation_time); } } } static void meta_compositor_real_before_paint (MetaCompositor *compositor, MetaCompositorView *compositor_view) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterStageView *stage_view; GList *l; stage_view = meta_compositor_view_get_stage_view (compositor_view); for (l = priv->windows; l; l = l->next) meta_window_actor_before_paint (l->data, stage_view); } static void meta_compositor_before_paint (MetaCompositor *compositor, MetaCompositorView *compositor_view) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); COGL_TRACE_BEGIN_SCOPED (MetaCompositorPrePaint, "Compositor (before-paint)"); maybe_update_top_window_actor_for_views (compositor); priv->frame_in_progress = TRUE; META_COMPOSITOR_GET_CLASS (compositor)->before_paint (compositor, compositor_view); } static void meta_compositor_real_after_paint (MetaCompositor *compositor, MetaCompositorView *compositor_view) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterActor *stage_actor = meta_backend_get_stage (priv->backend); CoglGraphicsResetStatus status; ClutterStageView *stage_view; GList *l; status = cogl_get_graphics_reset_status (priv->context); switch (status) { case COGL_GRAPHICS_RESET_STATUS_NO_ERROR: break; case COGL_GRAPHICS_RESET_STATUS_PURGED_CONTEXT_RESET: g_signal_emit_by_name (priv->display, "gl-video-memory-purged"); g_signal_emit_by_name (stage_actor, "gl-video-memory-purged"); clutter_actor_queue_redraw (stage_actor); break; default: /* The ARB_robustness spec says that, on error, the application should destroy the old context and create a new one. Since we don't have the necessary plumbing to do this we'll simply restart the process. Obviously we can't do this when we are a wayland compositor but in that case we shouldn't get here since we don't enable robustness in that case. */ g_assert (!meta_is_wayland_compositor ()); meta_restart (NULL, meta_display_get_context (priv->display)); break; } stage_view = meta_compositor_view_get_stage_view (compositor_view); for (l = priv->windows; l; l = l->next) { ClutterActor *actor = l->data; GList *actor_stage_views; actor_stage_views = clutter_actor_peek_stage_views (actor); if (g_list_find (actor_stage_views, stage_view)) meta_window_actor_after_paint (META_WINDOW_ACTOR (actor), stage_view); } } static void meta_compositor_after_paint (MetaCompositor *compositor, MetaCompositorView *compositor_view) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); COGL_TRACE_BEGIN_SCOPED (MetaCompositorPostPaint, "Compositor (after-paint)"); META_COMPOSITOR_GET_CLASS (compositor)->after_paint (compositor, compositor_view); priv->frame_in_progress = FALSE; } static void on_before_paint (ClutterStage *stage, ClutterStageView *stage_view, MetaCompositor *compositor) { MetaCompositorView *compositor_view; compositor_view = g_object_get_qdata (G_OBJECT (stage_view), quark_compositor_view); g_assert (compositor_view != NULL); meta_compositor_before_paint (compositor, compositor_view); } static void on_after_paint (ClutterStage *stage, ClutterStageView *stage_view, MetaCompositor *compositor) { MetaCompositorView *compositor_view; compositor_view = g_object_get_qdata (G_OBJECT (stage_view), quark_compositor_view); g_assert (compositor_view != NULL); meta_compositor_after_paint (compositor, compositor_view); } static void on_window_visibility_updated (MetaDisplay *display, GList *unplaced, GList *should_show, GList *should_hide, MetaCompositor *compositor) { update_top_window_actor (compositor); invalidate_top_window_actor_for_views (compositor); } static void on_monitors_changed_internal (MetaMonitorManager *monitor_manager, MetaCompositor *compositor) { meta_compositor_ensure_compositor_views (compositor); } static void meta_compositor_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { MetaCompositor *compositor = META_COMPOSITOR (object); MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); switch (prop_id) { case PROP_DISPLAY: priv->display = g_value_get_object (value); break; case PROP_BACKEND: priv->backend = g_value_get_object (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_compositor_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaCompositor *compositor = META_COMPOSITOR (object); MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); switch (prop_id) { case PROP_DISPLAY: g_value_set_object (value, priv->display); break; case PROP_BACKEND: g_value_set_object (value, priv->backend); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_compositor_init (MetaCompositor *compositor) { invalidate_top_window_actor_for_views (compositor); } static void meta_compositor_constructed (GObject *object) { MetaCompositor *compositor = META_COMPOSITOR (object); MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (priv->backend); ClutterActor *stage = meta_backend_get_stage (priv->backend); MetaMonitorManager *monitor_manager = meta_backend_get_monitor_manager (priv->backend); priv->context = clutter_backend->cogl_context; priv->before_paint_handler_id = g_signal_connect (stage, "before-paint", G_CALLBACK (on_before_paint), compositor); priv->after_paint_handler_id = g_signal_connect_after (stage, "after-paint", G_CALLBACK (on_after_paint), compositor); priv->window_visibility_updated_id = g_signal_connect (priv->display, "window-visibility-updated", G_CALLBACK (on_window_visibility_updated), compositor); priv->monitors_changed_internal_id = g_signal_connect (monitor_manager, "monitors-changed-internal", G_CALLBACK (on_monitors_changed_internal), compositor); priv->laters = meta_laters_new (compositor); G_OBJECT_CLASS (meta_compositor_parent_class)->constructed (object); meta_compositor_ensure_compositor_views (compositor); } static void meta_compositor_dispose (GObject *object) { MetaCompositor *compositor = META_COMPOSITOR (object); MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); ClutterActor *stage = meta_backend_get_stage (priv->backend); g_clear_object (&priv->laters); g_clear_signal_handler (&priv->stage_presented_id, stage); g_clear_signal_handler (&priv->before_paint_handler_id, stage); g_clear_signal_handler (&priv->after_paint_handler_id, stage); g_clear_signal_handler (&priv->window_visibility_updated_id, priv->display); g_clear_pointer (&priv->windows, g_list_free); G_OBJECT_CLASS (meta_compositor_parent_class)->dispose (object); } static void meta_compositor_class_init (MetaCompositorClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->set_property = meta_compositor_set_property; object_class->get_property = meta_compositor_get_property; object_class->constructed = meta_compositor_constructed; object_class->dispose = meta_compositor_dispose; klass->unmanage = meta_compositor_real_unmanage; klass->remove_window = meta_compositor_real_remove_window; klass->before_paint = meta_compositor_real_before_paint; klass->after_paint = meta_compositor_real_after_paint; obj_props[PROP_DISPLAY] = g_param_spec_object ("display", "display", "MetaDisplay", META_TYPE_DISPLAY, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_props[PROP_BACKEND] = g_param_spec_object ("backend", "backend", "MetaBackend", META_TYPE_BACKEND, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (object_class, N_PROPS, obj_props); quark_compositor_view = g_quark_from_static_string ("-meta-compositor-view"); } /** * meta_disable_unredirect_for_display: * @display: a #MetaDisplay * * Disables unredirection, can be useful in situations where having * unredirected windows is undesirable like when recording a video. * */ void meta_disable_unredirect_for_display (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; if (display->closing) return; compositor = get_compositor_for_display (display); priv = meta_compositor_get_instance_private (compositor); priv->disable_unredirect_count++; } /** * meta_enable_unredirect_for_display: * @display: a #MetaDisplay * * Enables unredirection which reduces the overhead for apps like games. * */ void meta_enable_unredirect_for_display (MetaDisplay *display) { MetaCompositor *compositor; MetaCompositorPrivate *priv; if (display->closing) return; compositor = get_compositor_for_display (display); priv = meta_compositor_get_instance_private (compositor); if (priv->disable_unredirect_count == 0) g_warning ("Called enable_unredirect_for_display while unredirection is enabled."); if (priv->disable_unredirect_count > 0) priv->disable_unredirect_count--; } gboolean meta_compositor_is_unredirect_inhibited (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->disable_unredirect_count > 0; } #define FLASH_TIME_MS 50 static void flash_out_completed (ClutterTimeline *timeline, gboolean is_finished, gpointer user_data) { ClutterActor *flash = CLUTTER_ACTOR (user_data); clutter_actor_destroy (flash); } void meta_compositor_flash_display (MetaCompositor *compositor, MetaDisplay *display) { ClutterActor *stage; ClutterActor *flash; ClutterTransition *transition; gfloat width, height; stage = meta_get_stage_for_display (display); clutter_actor_get_size (stage, &width, &height); flash = clutter_actor_new (); clutter_actor_set_background_color (flash, CLUTTER_COLOR_Black); clutter_actor_set_size (flash, width, height); clutter_actor_set_opacity (flash, 0); clutter_actor_add_child (stage, flash); clutter_actor_save_easing_state (flash); clutter_actor_set_easing_mode (flash, CLUTTER_EASE_IN_QUAD); clutter_actor_set_easing_duration (flash, FLASH_TIME_MS); clutter_actor_set_opacity (flash, 192); transition = clutter_actor_get_transition (flash, "opacity"); clutter_timeline_set_auto_reverse (CLUTTER_TIMELINE (transition), TRUE); clutter_timeline_set_repeat_count (CLUTTER_TIMELINE (transition), 2); g_signal_connect (transition, "stopped", G_CALLBACK (flash_out_completed), flash); clutter_actor_restore_easing_state (flash); } static void window_flash_out_completed (ClutterTimeline *timeline, gboolean is_finished, gpointer user_data) { ClutterActor *flash = CLUTTER_ACTOR (user_data); clutter_actor_destroy (flash); } void meta_compositor_flash_window (MetaCompositor *compositor, MetaWindow *window) { ClutterActor *window_actor = CLUTTER_ACTOR (meta_window_actor_from_window (window)); ClutterActor *flash; ClutterTransition *transition; flash = clutter_actor_new (); clutter_actor_set_background_color (flash, CLUTTER_COLOR_Black); clutter_actor_set_size (flash, window->rect.width, window->rect.height); clutter_actor_set_position (flash, window->custom_frame_extents.left, window->custom_frame_extents.top); clutter_actor_set_opacity (flash, 0); clutter_actor_add_child (window_actor, flash); clutter_actor_save_easing_state (flash); clutter_actor_set_easing_mode (flash, CLUTTER_EASE_IN_QUAD); clutter_actor_set_easing_duration (flash, FLASH_TIME_MS); clutter_actor_set_opacity (flash, 192); transition = clutter_actor_get_transition (flash, "opacity"); clutter_timeline_set_auto_reverse (CLUTTER_TIMELINE (transition), TRUE); clutter_timeline_set_repeat_count (CLUTTER_TIMELINE (transition), 2); g_signal_connect (transition, "stopped", G_CALLBACK (window_flash_out_completed), flash); clutter_actor_restore_easing_state (flash); } /** * meta_compositor_monotonic_to_high_res_xserver_time: * @display: a #MetaDisplay * @monotonic_time: time in the units of g_get_monotonic_time() * * _NET_WM_FRAME_DRAWN and _NET_WM_FRAME_TIMINGS messages represent time * as a "high resolution server time" - this is the server time interpolated * to microsecond resolution. The advantage of this time representation * is that if X server is running on the same computer as a client, and * the Xserver uses 'clock_gettime(CLOCK_MONOTONIC, ...)' for the server * time, the client can detect this, and all such clients will share a * a time representation with high accuracy. If there is not a common * time source, then the time synchronization will be less accurate. */ int64_t meta_compositor_monotonic_to_high_res_xserver_time (MetaCompositor *compositor, int64_t monotonic_time_us) { MetaCompositorClass *klass = META_COMPOSITOR_GET_CLASS (compositor); return klass->monotonic_to_high_res_xserver_time (compositor, monotonic_time_us); } void meta_compositor_show_tile_preview (MetaCompositor *compositor, MetaWindow *window, MetaRectangle *tile_rect, int tile_monitor_number) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); meta_plugin_manager_show_tile_preview (priv->plugin_mgr, window, tile_rect, tile_monitor_number); } void meta_compositor_hide_tile_preview (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); meta_plugin_manager_hide_tile_preview (priv->plugin_mgr); } void meta_compositor_show_window_menu (MetaCompositor *compositor, MetaWindow *window, MetaWindowMenuType menu, int x, int y) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); meta_plugin_manager_show_window_menu (priv->plugin_mgr, window, menu, x, y); } void meta_compositor_show_window_menu_for_rect (MetaCompositor *compositor, MetaWindow *window, MetaWindowMenuType menu, MetaRectangle *rect) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); meta_plugin_manager_show_window_menu_for_rect (priv->plugin_mgr, window, menu, rect); } MetaCloseDialog * meta_compositor_create_close_dialog (MetaCompositor *compositor, MetaWindow *window) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return meta_plugin_manager_create_close_dialog (priv->plugin_mgr, window); } MetaInhibitShortcutsDialog * meta_compositor_create_inhibit_shortcuts_dialog (MetaCompositor *compositor, MetaWindow *window) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return meta_plugin_manager_create_inhibit_shortcuts_dialog (priv->plugin_mgr, window); } void meta_compositor_locate_pointer (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); meta_plugin_manager_locate_pointer (priv->plugin_mgr); } MetaPluginManager * meta_compositor_get_plugin_manager (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->plugin_mgr; } MetaDisplay * meta_compositor_get_display (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->display; } ClutterStage * meta_compositor_get_stage (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return CLUTTER_STAGE (meta_backend_get_stage (priv->backend)); } MetaBackend * meta_compositor_get_backend (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->backend; } MetaWindowActor * meta_compositor_get_top_window_actor (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->top_window_actor; } gboolean meta_compositor_is_switching_workspace (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->switch_workspace_in_progress > 0; } /** * meta_compositor_get_laters: * @compositor: a #MetaCompositor * * Returns: (transfer none): a #MetaLaters */ MetaLaters * meta_compositor_get_laters (MetaCompositor *compositor) { MetaCompositorPrivate *priv; g_return_val_if_fail (META_IS_COMPOSITOR (compositor), NULL); priv = meta_compositor_get_instance_private (compositor); return priv->laters; }