C++ CLUTTER_IS_ACTOR函数代码示例

/* composite actors should implement destroy(), and inside their
 * implementation destroy any actors they are composed from;
 * in this case, we just destroy the child ClutterBox
 */
void clarity_cover_destroy(ClutterActor *self) {
    ClarityCoverPrivate *priv = CLARITY_COVER_GET_PRIVATE(self);

    if (priv) {
        if (CLUTTER_IS_ACTOR(priv->texture)) {
            clutter_actor_destroy(priv->texture);
            priv->texture = NULL;
        }

        if (CLUTTER_IS_ACTOR(priv->reflection)) {
            clutter_actor_destroy(priv->reflection);
            priv->reflection = NULL;
        }

        if (G_IS_OBJECT(priv->rotateBehaviour))
            priv->rotateBehaviour = NULL;
    }

    /* chain up to destroy() on the parent ClutterActorClass;
     * note that we check the parent class has a destroy() implementation
     * before calling it
     */
    if (CLUTTER_ACTOR_CLASS(clarity_cover_parent_class)->destroy)
        CLUTTER_ACTOR_CLASS(clarity_cover_parent_class)->destroy(self);
}

ClutterBox2DJoint *
clutter_box2d_add_weld_joint (ClutterBox2D        *box2d,
                              ClutterActor        *actor1,
                              ClutterActor        *actor2,
                              const ClutterVertex *anchor1,
                              const ClutterVertex *anchor2)
{
    ClutterBox2DPrivate *priv;
    b2WeldJointDef jd;

    g_return_val_if_fail (CLUTTER_IS_BOX2D (box2d), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor1), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor2), NULL);
    g_return_val_if_fail (anchor1 != NULL, NULL);
    g_return_val_if_fail (anchor2 != NULL, NULL);

    priv = box2d->priv;

    clutter_box2d_joint_ensure_bodies (box2d, actor1, actor2);

    jd.collideConnected = false;
    jd.bodyA = clutter_box2d_get_child (box2d, actor1)->priv->body;
    jd.bodyB = clutter_box2d_get_child (box2d, actor2)->priv->body;

    if (!jd.bodyA || !jd.bodyB)
        return NULL;

    jd.localAnchorA = b2Vec2 (anchor1->x * priv->scale_factor,
                              anchor1->y * priv->scale_factor);
    jd.localAnchorB = b2Vec2 (anchor2->x * priv->scale_factor,
                              anchor2->y * priv->scale_factor);
    jd.referenceAngle = jd.bodyB->GetAngle() - jd.bodyA->GetAngle();

    return joint_new (box2d, priv->world->CreateJoint (&jd), CLUTTER_BOX2D_JOINT_WELD);
}

ClutterBox2DJoint *
clutter_box2d_add_weld_joint2 (ClutterBox2D        *box2d,
                               ClutterActor        *actor1,
                               ClutterActor        *actor2,
                               const ClutterVertex *anchor)
{
    ClutterBox2DPrivate *priv;
    b2Body *bodyA, *bodyB;
    b2WeldJointDef jd;

    g_return_val_if_fail (CLUTTER_IS_BOX2D (box2d), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor1), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor2), NULL);
    g_return_val_if_fail (anchor != NULL, NULL);

    priv = box2d->priv;

    clutter_box2d_joint_ensure_bodies (box2d, actor1, actor2);

    jd.collideConnected = false;

    bodyA = clutter_box2d_get_child (box2d, actor1)->priv->body;
    bodyB = clutter_box2d_get_child (box2d, actor2)->priv->body;
    if (!bodyA || !bodyB)
        return NULL;

    jd.Initialize (bodyA, bodyB,
                   b2Vec2 (anchor->x * priv->scale_factor,
                           anchor->y * priv->scale_factor));

    return joint_new (box2d, priv->world->CreateJoint (&jd), CLUTTER_BOX2D_JOINT_WELD);
}

ClutterBox2DJoint *
clutter_box2d_add_pulley_joint (ClutterBox2D        *box2d,
                                ClutterActor        *actor1,
                                ClutterActor        *actor2,
                                const ClutterVertex *anchor1,
                                const ClutterVertex *anchor2,
                                const ClutterVertex *ground_anchor1,
                                const ClutterVertex *ground_anchor2,
                                gdouble              length1,
                                gdouble              length2,
                                gdouble              max_length1,
                                gdouble              max_length2,
                                gdouble              ratio)
{
    ClutterBox2DPrivate *priv;
    b2PulleyJointDef jd;

    g_return_val_if_fail (CLUTTER_IS_BOX2D (box2d), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor1), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor2), NULL);
    g_return_val_if_fail (anchor1 != NULL, NULL);
    g_return_val_if_fail (anchor2 != NULL, NULL);
    g_return_val_if_fail (ground_anchor1 != NULL, NULL);
    g_return_val_if_fail (ground_anchor2 != NULL, NULL);

    priv = box2d->priv;

    clutter_box2d_joint_ensure_bodies (box2d, actor1, actor2);

    jd.collideConnected = false;
    jd.bodyA = clutter_box2d_get_child (box2d, actor1)->priv->body;
    jd.bodyB = clutter_box2d_get_child (box2d, actor2)->priv->body;

    if (!jd.bodyA || !jd.bodyB)
        return NULL;

    jd.groundAnchorA = b2Vec2 (ground_anchor1->x * priv->scale_factor,
                               ground_anchor1->y * priv->scale_factor);
    jd.groundAnchorB = b2Vec2 (ground_anchor2->x * priv->scale_factor,
                               ground_anchor2->y * priv->scale_factor);
    jd.localAnchorA = b2Vec2 (anchor1->x * priv->scale_factor,
                              anchor1->y * priv->scale_factor);
    jd.localAnchorB = b2Vec2 (anchor2->x * priv->scale_factor,
                              anchor2->y * priv->scale_factor);
    jd.ratio = ratio;
    jd.lengthA = length1 * priv->scale_factor;
    jd.lengthB = length2 * priv->scale_factor;
    jd.maxLengthA = max_length1 * priv->scale_factor;
    jd.maxLengthB = max_length2 * priv->scale_factor;

    return joint_new (box2d, priv->world->CreateJoint (&jd), CLUTTER_BOX2D_JOINT_PULLEY);
}

/**
 * clutter_container_lower_child: (virtual lower)
 * @container: a #ClutterContainer
 * @actor: the actor to raise
 * @sibling: (allow-none): the sibling to lower to, or %NULL to lower
 *   to the bottom
 *
 * Lowers @actor to @sibling level, in the depth ordering.
 *
 * This function calls the #ClutterContainerIface.lower() virtual function,
 * which has been deprecated. The default implementation will call
 * clutter_actor_set_child_below_sibling().
 *
 * Since: 0.6
 *
 * Deprecated: 1.10: Use clutter_actor_set_child_below_sibling() instead.
 */
void
clutter_container_lower_child (ClutterContainer *container,
                               ClutterActor     *actor,
                               ClutterActor     *sibling)
{
  ClutterContainerIface *iface;
  ClutterActor *self;

  g_return_if_fail (CLUTTER_IS_CONTAINER (container));
  g_return_if_fail (CLUTTER_IS_ACTOR (actor));
  g_return_if_fail (sibling == NULL || CLUTTER_IS_ACTOR (sibling));

  if (actor == sibling)
    return;

  self = CLUTTER_ACTOR (container);

  if (clutter_actor_get_parent (actor) != self)
    {
      g_warning ("Actor of type '%s' is not a child of the container "
                 "of type '%s'",
                 g_type_name (G_OBJECT_TYPE (actor)),
                 g_type_name (G_OBJECT_TYPE (container)));
      return;
    }

  if (sibling != NULL&&
      clutter_actor_get_parent (sibling) != self)
    {
      g_warning ("Actor of type '%s' is not a child of the container "
                 "of type '%s'",
                 g_type_name (G_OBJECT_TYPE (sibling)),
                 g_type_name (G_OBJECT_TYPE (container)));
      return;
    }

  iface = CLUTTER_CONTAINER_GET_IFACE (container);

#ifdef CLUTTER_ENABLE_DEBUG
  if (G_UNLIKELY (_clutter_diagnostic_enabled ()))
    {
      if (iface->lower != container_real_lower)
        _clutter_diagnostic_message ("The ClutterContainer::lower() "
                                     "virtual function has been deprecated "
                                     "and it should not be overridden by "
                                     "newly written code");
    }
#endif /* CLUTTER_ENABLE_DEBUG */

  iface->lower (container, actor, sibling);
}

ClutterBox2DJoint *
clutter_box2d_add_pulley_joint2 (ClutterBox2D        *box2d,
                                 ClutterActor        *actor1,
                                 ClutterActor        *actor2,
                                 const ClutterVertex *anchor1,
                                 const ClutterVertex *anchor2,
                                 const ClutterVertex *ground_anchor1,
                                 const ClutterVertex *ground_anchor2,
                                 gdouble              max_length1,
                                 gdouble              max_length2,
                                 gdouble              ratio)
{
    ClutterBox2DPrivate *priv;
    b2Body *bodyA, *bodyB;
    b2PulleyJointDef jd;

    g_return_val_if_fail (CLUTTER_IS_BOX2D (box2d), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor1), NULL);
    g_return_val_if_fail (CLUTTER_IS_ACTOR (actor2), NULL);
    g_return_val_if_fail (anchor1 != NULL, NULL);
    g_return_val_if_fail (anchor2 != NULL, NULL);
    g_return_val_if_fail (ground_anchor1 != NULL, NULL);
    g_return_val_if_fail (ground_anchor2 != NULL, NULL);

    priv = box2d->priv;

    clutter_box2d_joint_ensure_bodies (box2d, actor1, actor2);

    jd.collideConnected = false;

    bodyA = clutter_box2d_get_child (box2d, actor1)->priv->body;
    bodyB = clutter_box2d_get_child (box2d, actor2)->priv->body;
    if (!bodyA || !bodyB)
        return NULL;

    jd.Initialize (bodyA, bodyB,
                   b2Vec2 (ground_anchor1->x * priv->scale_factor,
                           ground_anchor1->y * priv->scale_factor),
                   b2Vec2 (ground_anchor2->x * priv->scale_factor,
                           ground_anchor2->y * priv->scale_factor),
                   b2Vec2 (anchor1->x * priv->scale_factor,
                           anchor1->y * priv->scale_factor),
                   b2Vec2 (anchor2->x * priv->scale_factor,
                           anchor2->y * priv->scale_factor),
                   ratio);

    return joint_new (box2d, priv->world->CreateJoint (&jd), CLUTTER_BOX2D_JOINT_PULLEY);
}

/* Pointer left actor with tooltip */
static gboolean _xfdashboard_tooltip_action_on_leave_event(XfdashboardTooltipAction *self,
															ClutterEvent *inEvent,
															gpointer inUserData)
{
	XfdashboardTooltipActionPrivate		*priv;
	ClutterActor						*actor;
	ClutterActor						*stage;
	ClutterActor						*actorMeta;

	g_return_val_if_fail(XFDASHBOARD_IS_TOOLTIP_ACTION(self), CLUTTER_EVENT_PROPAGATE);
	g_return_val_if_fail(CLUTTER_IS_ACTOR(inUserData), CLUTTER_EVENT_PROPAGATE);

	priv=self->priv;
	actor=CLUTTER_ACTOR(inUserData);

	/* Get current actor this action belongs to */
	actorMeta=clutter_actor_meta_get_actor(CLUTTER_ACTOR_META(self));

	/* Release all sources and signal handler (except for enter event) */
	if(priv->motionSignalID!=0)
	{
		if(actorMeta) g_signal_handler_disconnect(actorMeta, priv->motionSignalID);
		priv->motionSignalID=0;
	}

	if(priv->leaveSignalID!=0)
	{
		if(actorMeta) g_signal_handler_disconnect(actorMeta, priv->leaveSignalID);
		priv->leaveSignalID=0;
	}

	if(priv->captureSignalID)
	{
		if(priv->captureSignalActor) g_signal_handler_disconnect(priv->captureSignalActor, priv->captureSignalID);
		priv->captureSignalActor=NULL;
		priv->captureSignalID=0;
	}

	if(priv->timeoutSourceID!=0)
	{
		g_source_remove(priv->timeoutSourceID);
		priv->timeoutSourceID=0;
	}

	/* Clear last actor we remembered if it is pointing to this actor */
	if(_xfdashboard_tooltip_last_event_actor==actor)
	{
		_xfdashboard_tooltip_last_event_actor=NULL;
	}

	/* Hide tooltip now */
	stage=clutter_actor_get_stage(actor);
	if(stage && XFDASHBOARD_IS_STAGE(stage))
	{
		g_signal_emit_by_name(stage, "hide-tooltip", self, NULL);
		priv->isVisible=FALSE;
	}

	return(CLUTTER_EVENT_PROPAGATE);
}

/* Pointer entered an actor with tooltip */
static gboolean _xfdashboard_tooltip_action_on_enter_event(XfdashboardTooltipAction *self,
															ClutterEvent *inEvent,
															gpointer inUserData)
{
	XfdashboardTooltipActionPrivate		*priv;
	ClutterActor						*actor;

	g_return_val_if_fail(XFDASHBOARD_IS_TOOLTIP_ACTION(self), CLUTTER_EVENT_PROPAGATE);
	g_return_val_if_fail(CLUTTER_IS_ACTOR(inUserData), CLUTTER_EVENT_PROPAGATE);

	priv=self->priv;
	actor=CLUTTER_ACTOR(inUserData);

	/* Remove any timeout source we have added for this actor */
	if(priv->timeoutSourceID!=0)
	{
		g_source_remove(priv->timeoutSourceID);
		priv->timeoutSourceID=0;
	}

	/* Connect signals */
	g_warn_if_fail(priv->motionSignalID==0);
	priv->motionSignalID=g_signal_connect_swapped(actor,
													"motion-event",
													G_CALLBACK(_xfdashboard_tooltip_action_on_motion_event),
													self);

	g_warn_if_fail(priv->leaveSignalID==0);
	priv->leaveSignalID=g_signal_connect_swapped(actor,
													"leave-event",
													G_CALLBACK(_xfdashboard_tooltip_action_on_leave_event),
													self);

	return(CLUTTER_EVENT_PROPAGATE);
}

/**
 * clutter_bin_layout_add:
 * @self: a #ClutterBinLayout
 * @child: a #ClutterActor
 * @x_align: horizontal alignment policy for @child
 * @y_align: vertical alignment policy for @child
 *
 * Adds a #ClutterActor to the container using @self and
 * sets the alignment policies for it
 *
 * This function is equivalent to clutter_container_add_actor()
 * and clutter_layout_manager_child_set_property() but it does not
 * require a pointer to the #ClutterContainer associated to the
 * #ClutterBinLayout
 *
 * Since: 1.2
 */
void
clutter_bin_layout_add (ClutterBinLayout    *self,
                        ClutterActor        *child,
                        ClutterBinAlignment  x_align,
                        ClutterBinAlignment  y_align)
{
  ClutterBinLayoutPrivate *priv;
  ClutterLayoutManager *manager;
  ClutterLayoutMeta *meta;

  g_return_if_fail (CLUTTER_IS_BIN_LAYOUT (self));
  g_return_if_fail (CLUTTER_IS_ACTOR (child));

  priv = self->priv;

  if (priv->container == NULL)
    {
      g_warning ("The layout of type '%s' must be associated to "
                 "a ClutterContainer before adding children",
                 G_OBJECT_TYPE_NAME (self));
      return;
    }

  clutter_container_add_actor (priv->container, child);

  manager = CLUTTER_LAYOUT_MANAGER (self);
  meta = clutter_layout_manager_get_child_meta (manager,
                                                priv->container,
                                                child);
  g_assert (CLUTTER_IS_BIN_LAYER (meta));

  set_layer_x_align (CLUTTER_BIN_LAYER (meta), x_align);
  set_layer_y_align (CLUTTER_BIN_LAYER (meta), y_align);
}

static void meta_switcher_dispose(GObject *object)
{
    MetaSwitcher *switcher = META_SWITCHER(object);
    MetaSwitcherPrivate* priv = switcher->priv;

    if (priv->disposed) return;
    priv->disposed = TRUE;

    MetaScreen* screen = meta_plugin_get_screen(priv->plugin);
    ClutterActor* stage = meta_get_stage_for_screen(screen);
    clutter_actor_remove_child(stage, priv->top);

    if (priv->modaled) {
        meta_plugin_end_modal(priv->plugin, clutter_get_current_event_time());
        meta_enable_unredirect_for_screen(screen);

        if (priv->selected_id < 0 && priv->previous_focused)
            clutter_stage_set_key_focus(CLUTTER_STAGE(stage), priv->previous_focused);
    }

    if (CLUTTER_IS_ACTOR(priv->top)) {
        g_clear_pointer(&priv->top, clutter_actor_destroy);
    } else priv->top = NULL;

    if (priv->autoclose_id) {
        g_source_remove(priv->autoclose_id);
        priv->autoclose_id = 0;
    }

    GList* ws_list = meta_screen_get_workspaces(screen);
    g_list_foreach(ws_list, (GFunc)unhook_ws_event, switcher);

    G_OBJECT_CLASS(meta_switcher_parent_class)->dispose(object);
}

/**
 * clutter_behaviour_remove:
 * @behave: a #ClutterBehaviour
 * @actor: a #ClutterActor
 *
 * Removes @actor from the list of #ClutterActor<!-- -->s to which
 * @behave applies.  This function removes a reference on the actor.
 *
 * Since: 0.2
 */
void
clutter_behaviour_remove (ClutterBehaviour *behave,
                          ClutterActor     *actor)
{
  ClutterBehaviourPrivate *priv;

  g_return_if_fail (CLUTTER_IS_BEHAVIOUR (behave));
  g_return_if_fail (CLUTTER_IS_ACTOR (actor));

  priv = behave->priv;

  if (!g_slist_find (priv->actors, actor))
    {
      g_warning ("The behaviour of type %s is not applied "
                 "to the actor of type %s",
                 g_type_name (G_OBJECT_TYPE (behave)),
                 g_type_name (G_OBJECT_TYPE (actor)));
      return;
    }

  g_signal_handlers_disconnect_by_func (actor,
                                        G_CALLBACK (remove_actor_on_destroy),
                                        behave);

  priv->actors = g_slist_remove (priv->actors, actor);
  
  g_signal_emit (behave, behave_signals[REMOVED], 0, actor);

  g_object_unref (actor);
}

static void
pkg_graph_place_child (PkgGraph     *graph,
                       ClutterActor *child)
{
	PkgGraphPrivate *priv;
	gfloat w, h, x = 0, y = 0;

	g_return_if_fail(PKG_IS_GRAPH(graph));
	g_return_if_fail(CLUTTER_IS_ACTOR(child));

	priv = graph->priv;

	clutter_actor_get_size(CLUTTER_ACTOR(graph), &w, &h);

	if (priv->xpad) {
		x = priv->xpad;
	}

	if (priv->ypad) {
		y = priv->ypad;
	}

	w -= 2 * priv->xpad;
	h -= 2 * priv->ypad;

	clutter_actor_set_size(child, w, h);
	clutter_actor_set_position(child, x, y);
	clutter_actor_queue_redraw(child);
}

static AstroWindow *
get_window (AstroApplication *app)
{
  AstroExamplePrivate *priv;
  ClutterColor color = { 0xff, 0xff, 0x22, 0x22 };
  ClutterActor *window = NULL, *rect;

  g_return_val_if_fail (ASTRO_IS_EXAMPLE (app), NULL);
  priv = ASTRO_EXAMPLE (app)->priv;

  if (CLUTTER_IS_ACTOR (priv->window))
    window = priv->window;
  else
    {
      window = astro_window_new ();
      
      rect = clutter_rectangle_new_with_color (&color);
      clutter_container_add_actor (CLUTTER_CONTAINER (window), rect);
      clutter_actor_set_size (rect, CSW (), CSH()-ASTRO_PANEL_HEIGHT());
      clutter_actor_show (rect);
    }

  ASTRO_EXAMPLE (app)->priv->window = window;

  return ASTRO_WINDOW (window);
}

/**
 * xfdashboard_traverse_actor:
 * @inRootActor: The root #ClutterActor where to begin traversing
 * @inSelector: A #XfdashboardCssSelector to filter actors while traversing or
 *   %NULL to disable filterting
 * @inCallback: Function to call on matching children
 * @inUserData: Data to pass to callback function
 *
 * Iterates through all children of @inRootActor recursively beginning at
 * @inRootActor and for each child matching the selector @inSelector it calls the
 * callback function @inCallback with the matching child and the user-data at
 * @inUserData.
 *
 * If @inRootActor is %NULL it begins at the global stage.
 *
 * If the selector @inSelector is %NULL all children will match and the callback
 * function @inCallback is called for all children.
 */
void xfdashboard_traverse_actor(ClutterActor *inRootActor,
								XfdashboardCssSelector *inSelector,
								XfdashboardTraversalCallback inCallback,
								gpointer inUserData)
{
	g_return_if_fail(!inRootActor || CLUTTER_IS_ACTOR(inRootActor));
	g_return_if_fail(!inSelector || XFDASHBOARD_IS_CSS_SELECTOR(inSelector));
	g_return_if_fail(inCallback);

	/* If root actor where begin traversal is NULL then begin at stage */
	if(!inRootActor)
	{
		inRootActor=CLUTTER_ACTOR(xfdashboard_application_get_stage(NULL));
	}

	/* If no selector is provider create a seletor matching all actors.
	 * Otherwise take an extra ref on provided selector to prevent
	 * destruction when we unref it later.
	 */
	if(!inSelector) inSelector=xfdashboard_css_selector_new_from_string("*");
		else g_object_ref(inSelector);

	/* Do traversal */
	_xfdashboard_traverse_actor_internal(inRootActor, inSelector, inCallback, inUserData);

	/* Release reference on selector */
	g_object_unref(inSelector);
}

/**
 * clutter_container_add_actor:
 * @container: a #ClutterContainer
 * @actor: the first #ClutterActor to add
 *
 * Adds a #ClutterActor to @container. This function will emit the
 * "actor-added" signal. The actor should be parented to
 * @container. You cannot add a #ClutterActor to more than one
 * #ClutterContainer.
 *
 * Since: 0.4
 */
void
clutter_container_add_actor (ClutterContainer *container,
                             ClutterActor     *actor)
{
  ClutterContainerIface *iface;
  ClutterActor *parent;

  g_return_if_fail (CLUTTER_IS_CONTAINER (container));
  g_return_if_fail (CLUTTER_IS_ACTOR (actor));

  iface = CLUTTER_CONTAINER_GET_IFACE (container);
  if (!iface->add)
    {
      CLUTTER_CONTAINER_WARN_NOT_IMPLEMENTED (container, "add");
      return;
    }

  parent = clutter_actor_get_parent (actor);
  if (parent)
    {
      g_warning ("Attempting to add actor of type '%s' to a "
		 "container of type '%s', but the actor has "
                 "already a parent of type '%s'.",
		 g_type_name (G_OBJECT_TYPE (actor)),
		 g_type_name (G_OBJECT_TYPE (container)),
		 g_type_name (G_OBJECT_TYPE (parent)));
      return;
    }

  clutter_container_create_child_meta (container, actor);

  iface->add (container, actor);
}