/* -*- 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/meta-dnd-private.h" #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/display-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-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; guint pre_paint_func_id; guint post_paint_func_id; gulong stage_presented_id; gulong stage_after_paint_id; int64_t server_time_query_time; int64_t server_time_offset; gboolean server_time_is_monotonic_time; ClutterActor *stage; ClutterActor *window_group; ClutterActor *top_window_group; ClutterActor *feedback_group; GList *windows; CoglContext *context; MetaWindowActor *top_window_actor; gulong top_window_actor_destroy_id; int disable_unredirect_count; int switch_workspace_in_progress; MetaPluginManager *plugin_mgr; MetaLaters *laters; } MetaCompositorPrivate; G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (MetaCompositor, meta_compositor, G_TYPE_OBJECT) static void on_presented (ClutterStage *stage, CoglFrameEvent event, ClutterFrameInfo *frame_info, MetaCompositor *compositor); static void on_top_window_actor_destroyed (MetaWindowActor *window_actor, MetaCompositor *compositor); static gboolean is_modal (MetaDisplay *display) { return display->event_route == META_EVENT_ROUTE_COMPOSITOR_GRAB; } 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_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; 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->feedback_group; } /** * 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); } static gboolean grab_devices (MetaModalOptions options, guint32 timestamp) { MetaBackend *backend = META_BACKEND (meta_get_backend ()); gboolean pointer_grabbed = FALSE; gboolean keyboard_grabbed = FALSE; if ((options & META_MODAL_POINTER_ALREADY_GRABBED) == 0) { if (!meta_backend_grab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp)) goto fail; pointer_grabbed = TRUE; } if ((options & META_MODAL_KEYBOARD_ALREADY_GRABBED) == 0) { if (!meta_backend_grab_device (backend, META_VIRTUAL_CORE_KEYBOARD_ID, timestamp)) goto fail; keyboard_grabbed = TRUE; } return TRUE; fail: if (pointer_grabbed) meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp); if (keyboard_grabbed) meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_KEYBOARD_ID, timestamp); return FALSE; } gboolean meta_begin_modal_for_plugin (MetaCompositor *compositor, MetaPlugin *plugin, MetaModalOptions options, guint32 timestamp) { /* To some extent this duplicates code in meta_display_begin_grab_op(), but there * are significant differences in how we handle grabs that make it difficult to * merge the two. */ MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaDisplay *display = priv->display; #ifdef HAVE_WAYLAND if (display->grab_op == META_GRAB_OP_WAYLAND_POPUP) { MetaWaylandSeat *seat = meta_wayland_compositor_get_default ()->seat; meta_wayland_pointer_end_popup_grab (seat->pointer); } #endif if (is_modal (display) || display->grab_op != META_GRAB_OP_NONE) return FALSE; if (display->x11_display) { /* XXX: why is this needed? */ XIUngrabDevice (display->x11_display->xdisplay, META_VIRTUAL_CORE_POINTER_ID, timestamp); XSync (display->x11_display->xdisplay, False); } if (!grab_devices (options, timestamp)) return FALSE; display->grab_op = META_GRAB_OP_COMPOSITOR; display->event_route = META_EVENT_ROUTE_COMPOSITOR_GRAB; display->grab_window = NULL; display->grab_have_pointer = TRUE; display->grab_have_keyboard = TRUE; g_signal_emit_by_name (display, "grab-op-begin", meta_plugin_get_display (plugin), display->grab_window, display->grab_op); if (meta_is_wayland_compositor ()) { meta_display_sync_wayland_input_focus (display); meta_display_cancel_touch (display); #ifdef HAVE_WAYLAND meta_dnd_wayland_handle_begin_modal (compositor); #endif } return TRUE; } void meta_end_modal_for_plugin (MetaCompositor *compositor, MetaPlugin *plugin, guint32 timestamp) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); MetaDisplay *display = priv->display; MetaBackend *backend = meta_get_backend (); MetaWindow *grab_window = display->grab_window; MetaGrabOp grab_op = display->grab_op; g_return_if_fail (is_modal (display)); display->grab_op = META_GRAB_OP_NONE; display->event_route = META_EVENT_ROUTE_NORMAL; display->grab_window = NULL; display->grab_have_pointer = FALSE; display->grab_have_keyboard = FALSE; meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp); meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_KEYBOARD_ID, timestamp); #ifdef HAVE_WAYLAND if (meta_is_wayland_compositor ()) { meta_dnd_wayland_handle_end_modal (compositor); meta_display_sync_wayland_input_focus (display); } #endif g_signal_emit_by_name (display, "grab-op-end", meta_plugin_get_display (plugin), grab_window, grab_op); } static void after_stage_paint (ClutterStage *stage, gpointer data) { MetaCompositor *compositor = data; MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; for (l = priv->windows; l; l = l->next) meta_window_actor_post_paint (l->data); } static void redirect_windows (MetaX11Display *x11_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_get_replace_current_wm ()) 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 (display->x11_display); } 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); /* We use connect_after() here to accomodate code in GNOME Shell that, * when benchmarking drawing performance, connects to ::after-paint * and calls glFinish(). The timing information from that will be * more accurate if we hold off until that completes before we signal * apps to begin drawing the next frame. If there are no other * connections to ::after-paint, connect() vs. connect_after() doesn't * matter. */ priv->stage_after_paint_id = g_signal_connect_after (stage, "after-paint", G_CALLBACK (after_stage_paint), compositor); clutter_stage_set_sync_delay (CLUTTER_STAGE (stage), META_SYNC_DELAY); 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); 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); } 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); } 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 explicitely 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 MetaWindowActor * get_top_visible_window_actor (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; 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)) return window_actor; } return NULL; } 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); MetaWindowActor *top_window_actor; 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\n", 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); top_window_actor = get_top_visible_window_actor (compositor); 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); } 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 on_presented (ClutterStage *stage, CoglFrameEvent event, ClutterFrameInfo *frame_info, MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; if (event == COGL_FRAME_EVENT_COMPLETE) { gint64 presentation_time_cogl = frame_info->presentation_time; gint64 presentation_time; if (presentation_time_cogl != 0) { /* Cogl reports presentation in terms of its own clock, which is * guaranteed to be in nanoseconds but with no specified base. The * normal case with the open source GPU drivers on Linux 3.8 and * newer is that the base of cogl_get_clock_time() is that of * clock_gettime(CLOCK_MONOTONIC), so the same as g_get_monotonic_time), * but there's no exposure of that through the API. clock_gettime() * is fairly fast, so calling it twice and subtracting to get a * nearly-zero number is acceptable, if a litle ugly. */ gint64 current_cogl_time = cogl_get_clock_time (priv->context); gint64 current_monotonic_time = g_get_monotonic_time (); presentation_time = current_monotonic_time + (presentation_time_cogl - current_cogl_time) / 1000; } else { presentation_time = 0; } for (l = priv->windows; l; l = l->next) meta_window_actor_frame_complete (l->data, frame_info, presentation_time); } } static void meta_compositor_real_pre_paint (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); GList *l; for (l = priv->windows; l; l = l->next) meta_window_actor_pre_paint (l->data); } static void meta_compositor_pre_paint (MetaCompositor *compositor) { COGL_TRACE_BEGIN_SCOPED (MetaCompositorPrePaint, "Compositor (pre-paint)"); META_COMPOSITOR_GET_CLASS (compositor)->pre_paint (compositor); } static gboolean meta_pre_paint_func (gpointer data) { MetaCompositor *compositor = data; meta_compositor_pre_paint (compositor); return TRUE; } static void meta_compositor_real_post_paint (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); CoglGraphicsResetStatus status; #ifdef HAVE_WAYLAND if (meta_is_wayland_compositor ()) meta_wayland_compositor_paint_finished (meta_wayland_compositor_get_default ()); #endif 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"); clutter_actor_queue_redraw (meta_backend_get_stage (priv->backend)); 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); break; } } static void meta_compositor_post_paint (MetaCompositor *compositor) { COGL_TRACE_BEGIN_SCOPED (MetaCompositorPostPaint, "Compositor (post-paint)"); META_COMPOSITOR_GET_CLASS (compositor)->post_paint (compositor); } static gboolean meta_post_paint_func (gpointer data) { MetaCompositor *compositor = data; meta_compositor_post_paint (compositor); return TRUE; } 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) { } 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); priv->context = clutter_backend->cogl_context; priv->pre_paint_func_id = clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_PRE_PAINT, meta_pre_paint_func, compositor, NULL); priv->post_paint_func_id = clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT, meta_post_paint_func, compositor, NULL); priv->laters = meta_laters_new (compositor); G_OBJECT_CLASS (meta_compositor_parent_class)->constructed (object); } 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_pointer (&priv->laters, meta_laters_free); g_clear_signal_handler (&priv->stage_after_paint_id, stage); g_clear_signal_handler (&priv->stage_presented_id, stage); g_clear_handle_id (&priv->pre_paint_func_id, clutter_threads_remove_repaint_func); g_clear_handle_id (&priv->post_paint_func_id, clutter_threads_remove_repaint_func); 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); 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->remove_window = meta_compositor_real_remove_window; klass->pre_paint = meta_compositor_real_pre_paint; klass->post_paint = meta_compositor_real_post_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); } /** * meta_disable_unredirect_for_display: * @display: a #MetaDisplay * * Disables unredirection, can be usefull in situations where having * unredirected windows is undesireable 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_time_to_server_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. */ gint64 meta_compositor_monotonic_time_to_server_time (MetaDisplay *display, gint64 monotonic_time) { MetaCompositor *compositor = display->compositor; MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); if (priv->server_time_query_time == 0 || (!priv->server_time_is_monotonic_time && monotonic_time > priv->server_time_query_time + 10*1000*1000)) /* 10 seconds */ { guint32 server_time = meta_display_get_current_time_roundtrip (display); gint64 server_time_usec = (gint64)server_time * 1000; gint64 current_monotonic_time = g_get_monotonic_time (); priv->server_time_query_time = current_monotonic_time; /* If the server time is within a second of the monotonic time, * we assume that they are identical. This seems like a big margin, * but we want to be as robust as possible even if the system * is under load and our processing of the server response is * delayed. */ if (server_time_usec > current_monotonic_time - 1000*1000 && server_time_usec < current_monotonic_time + 1000*1000) priv->server_time_is_monotonic_time = TRUE; priv->server_time_offset = server_time_usec - current_monotonic_time; } if (priv->server_time_is_monotonic_time) return monotonic_time; else return monotonic_time + priv->server_time_offset; } 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)); } 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; } MetaLaters * meta_compositor_get_laters (MetaCompositor *compositor) { MetaCompositorPrivate *priv = meta_compositor_get_instance_private (compositor); return priv->laters; }