/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ #include "config.h" #include "shell-embedded-window-private.h" #include "shell-global.h" #include "shell-util.h" #include #include #include enum { PROP_0, PROP_WINDOW }; typedef struct _ShellGtkEmbedPrivate ShellGtkEmbedPrivate; struct _ShellGtkEmbedPrivate { ShellEmbeddedWindow *window; ClutterActor *window_actor; gulong window_actor_destroyed_handler; gulong window_created_handler; }; G_DEFINE_TYPE_WITH_PRIVATE (ShellGtkEmbed, shell_gtk_embed, CLUTTER_TYPE_CLONE); static void shell_gtk_embed_set_window (ShellGtkEmbed *embed, ShellEmbeddedWindow *window); static void shell_gtk_embed_on_window_destroy (GtkWidget *object, ShellGtkEmbed *embed) { shell_gtk_embed_set_window (embed, NULL); } static void shell_gtk_embed_remove_window_actor (ShellGtkEmbed *embed) { ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); if (priv->window_actor) { g_clear_signal_handler (&priv->window_actor_destroyed_handler, priv->window_actor); g_object_unref (priv->window_actor); priv->window_actor = NULL; } clutter_clone_set_source (CLUTTER_CLONE (embed), NULL); } static void shell_gtk_embed_window_created_cb (MetaDisplay *display, MetaWindow *window, ShellGtkEmbed *embed) { ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); Window xwindow = meta_window_get_xwindow (window); GdkWindow *gdk_window = gtk_widget_get_window (GTK_WIDGET (priv->window)); if (gdk_window && xwindow == gdk_x11_window_get_xid (gdk_window)) { ClutterActor *window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window)); GCallback remove_cb = G_CALLBACK (shell_gtk_embed_remove_window_actor); cairo_region_t *empty_region; clutter_clone_set_source (CLUTTER_CLONE (embed), window_actor); /* We want to explicitly clear the clone source when the window actor is destroyed because otherwise we might end up keeping it alive after it has been disposed. Otherwise this can cause a crash if there is a paint after mutter notices that the top level window has been destroyed, which causes it to dispose the window, and before the tray manager notices that the window is gone which would otherwise reset the window and unref the clone */ priv->window_actor = g_object_ref (window_actor); priv->window_actor_destroyed_handler = g_signal_connect_swapped (window_actor, "destroy", remove_cb, embed); /* Hide the original actor otherwise it will appear in the scene as a normal window */ clutter_actor_set_opacity (window_actor, 0); /* Also make sure it (or any of its children) doesn't block events on wayland */ shell_util_set_hidden_from_pick (window_actor, TRUE); /* Set an empty input shape on the window so that it can't get any input. This probably isn't the ideal way to achieve this. It would probably be better to force the window to go behind Mutter's guard window, but this is quite difficult to do as Mutter doesn't manage the stacking for override redirect windows and the guard window is repeatedly lowered to the bottom of the stack. */ empty_region = cairo_region_create (); gdk_window_input_shape_combine_region (gdk_window, empty_region, 0, 0 /* offset x/y */); cairo_region_destroy (empty_region); gdk_window_lower (gdk_window); /* Now that we've found the window we don't need to listen for new windows anymore */ g_clear_signal_handler (&priv->window_created_handler, display); } } static void shell_gtk_embed_on_window_mapped (GtkWidget *object, ShellGtkEmbed *embed) { ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); MetaDisplay *display = shell_global_get_display (shell_global_get ()); if (priv->window_created_handler == 0 && priv->window_actor == NULL) /* Listen for new windows so we can detect when Mutter has created a MutterWindow for this window */ priv->window_created_handler = g_signal_connect (display, "window-created", G_CALLBACK (shell_gtk_embed_window_created_cb), embed); } static void shell_gtk_embed_set_window (ShellGtkEmbed *embed, ShellEmbeddedWindow *window) { ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); MetaDisplay *display = shell_global_get_display (shell_global_get ()); if (priv->window) { g_clear_signal_handler (&priv->window_created_handler, display); shell_gtk_embed_remove_window_actor (embed); _shell_embedded_window_set_actor (priv->window, NULL); g_object_unref (priv->window); g_signal_handlers_disconnect_by_func (priv->window, (gpointer)shell_gtk_embed_on_window_destroy, embed); g_signal_handlers_disconnect_by_func (priv->window, (gpointer)shell_gtk_embed_on_window_mapped, embed); } priv->window = window; if (priv->window) { g_object_ref (priv->window); _shell_embedded_window_set_actor (priv->window, embed); g_signal_connect (priv->window, "destroy", G_CALLBACK (shell_gtk_embed_on_window_destroy), embed); g_signal_connect (priv->window, "map", G_CALLBACK (shell_gtk_embed_on_window_mapped), embed); } clutter_actor_queue_relayout (CLUTTER_ACTOR (embed)); } static void shell_gtk_embed_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (object); switch (prop_id) { case PROP_WINDOW: shell_gtk_embed_set_window (embed, (ShellEmbeddedWindow *)g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void shell_gtk_embed_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (object); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); switch (prop_id) { case PROP_WINDOW: g_value_set_object (value, priv->window); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void shell_gtk_embed_get_preferred_width (ClutterActor *actor, float for_height, float *min_width_p, float *natural_width_p) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (actor); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); if (priv->window && gtk_widget_get_visible (GTK_WIDGET (priv->window))) { GtkRequisition min_req, natural_req; gtk_widget_get_preferred_size (GTK_WIDGET (priv->window), &min_req, &natural_req); *min_width_p = min_req.width; *natural_width_p = natural_req.width; } else *min_width_p = *natural_width_p = 0; } static void shell_gtk_embed_get_preferred_height (ClutterActor *actor, float for_width, float *min_height_p, float *natural_height_p) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (actor); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); if (priv->window && gtk_widget_get_visible (GTK_WIDGET (priv->window))) { GtkRequisition min_req, natural_req; gtk_widget_get_preferred_size (GTK_WIDGET (priv->window), &min_req, &natural_req); *min_height_p = min_req.height; *natural_height_p = natural_req.height; } else *min_height_p = *natural_height_p = 0; } static void shell_gtk_embed_allocate (ClutterActor *actor, const ClutterActorBox *box, ClutterAllocationFlags flags) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (actor); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); float wx, wy; CLUTTER_ACTOR_CLASS (shell_gtk_embed_parent_class)-> allocate (actor, box, flags); /* Find the actor's new coordinates in terms of the stage (which is * priv->window's parent window. */ clutter_actor_get_transformed_position (actor, &wx, &wy); _shell_embedded_window_allocate (priv->window, (int)(0.5 + wx), (int)(0.5 + wy), box->x2 - box->x1, box->y2 - box->y1); } static void shell_gtk_embed_map (ClutterActor *actor) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (actor); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); _shell_embedded_window_map (priv->window); CLUTTER_ACTOR_CLASS (shell_gtk_embed_parent_class)->map (actor); } static void shell_gtk_embed_unmap (ClutterActor *actor) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (actor); ShellGtkEmbedPrivate *priv = shell_gtk_embed_get_instance_private (embed); _shell_embedded_window_unmap (priv->window); CLUTTER_ACTOR_CLASS (shell_gtk_embed_parent_class)->unmap (actor); } static void shell_gtk_embed_dispose (GObject *object) { ShellGtkEmbed *embed = SHELL_GTK_EMBED (object); G_OBJECT_CLASS (shell_gtk_embed_parent_class)->dispose (object); shell_gtk_embed_set_window (embed, NULL); } static void shell_gtk_embed_class_init (ShellGtkEmbedClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); object_class->get_property = shell_gtk_embed_get_property; object_class->set_property = shell_gtk_embed_set_property; object_class->dispose = shell_gtk_embed_dispose; actor_class->get_preferred_width = shell_gtk_embed_get_preferred_width; actor_class->get_preferred_height = shell_gtk_embed_get_preferred_height; actor_class->allocate = shell_gtk_embed_allocate; actor_class->map = shell_gtk_embed_map; actor_class->unmap = shell_gtk_embed_unmap; g_object_class_install_property (object_class, PROP_WINDOW, g_param_spec_object ("window", "Window", "ShellEmbeddedWindow to embed", SHELL_TYPE_EMBEDDED_WINDOW, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); } static void shell_gtk_embed_init (ShellGtkEmbed *embed) { } /* * Public API */ ClutterActor * shell_gtk_embed_new (ShellEmbeddedWindow *window) { g_return_val_if_fail (SHELL_IS_EMBEDDED_WINDOW (window), NULL); return g_object_new (SHELL_TYPE_GTK_EMBED, "window", window, NULL); }