9799750c03
In order to chain up animations using clutter_actor_animate() and friends you have to use an idle handler that guarantees that the main loop spins at least once after the animation pointer has been detached from the actor. This has several drawbacks, first and foremost the fact that the slice of the main loop for the idle handler might be starved by other operations, like redrawing. This inevitably leads to tricks with priorities and the like, contributing to the overall complexity. Instead, we should guarantee that the animation instance created by clutter_actor_animate() is valid for the ::completed signal until it reaches its default handler; after that, the animation is detached from the actor and destroyed. This means that it's possible to create a new animation after the first is complete by simply using g_signal_connect_after(). This unfortunately makes it impossible to keep a reference to the animation pointer attached to the actor by using g_object_ref(); a way to "fix" this would be to have a clutter_animation_attach() and a clutter_animation_detach() pair of methods that allow attaching any animation to an actor. This might overcomplicate what it is the simple animation API, though, so it's currently not implemented and left for future versions. The test-easing interactive demo has been modified to show how the animation queuing works by adding a command line switch that recenters the animated actor once the first animation has ended.
2131 lines
64 KiB
C
2131 lines
64 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2008 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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/**
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* SECTION:clutter-animation
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* @short_description: Simple implicit animations
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* @See_Also: #ClutterAnimatable, #ClutterInterval, #ClutterAlpha,
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* #ClutterTimeline
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*
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* #ClutterAnimation is an object providing simple, implicit animations
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* for #GObject<!-- -->s.
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*
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* #ClutterAnimation instances will bind one or more #GObject properties
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* belonging to a #GObject to a #ClutterInterval, and will then use a
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* #ClutterAlpha to interpolate the property between the initial and final
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* values of the interval.
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*
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* The duration of the animation is set using clutter_animation_set_duration().
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* The easing mode of the animation is set using clutter_animation_set_mode().
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*
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* If you want to control the animation you should retrieve the
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* #ClutterTimeline using clutter_animation_get_timeline() and then
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* use #ClutterTimeline functions like clutter_timeline_start(),
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* clutter_timeline_pause() or clutter_timeline_stop().
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*
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* A #ClutterAnimation will emit the #ClutterAnimation::completed signal
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* when the #ClutterTimeline used by the animation is completed; unlike
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* #ClutterTimeline, though, the #ClutterAnimation::completed will not be
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* emitted if #ClutterAnimation:loop is set to %TRUE - that is, a looping
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* animation never completes.
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*
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* If your animation depends on user control you can force its completion
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* using clutter_animation_completed().
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*
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* If the #GObject instance bound to a #ClutterAnimation implements the
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* #ClutterAnimatable interface it is possible for that instance to
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* control the way the initial and final states are interpolated.
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*
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* #ClutterAnimation<!-- -->s are distinguished from #ClutterBehaviour<!-- -->s
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* because the former can only control #GObject properties of a single
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* #GObject instance, while the latter can control multiple properties
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* using accessor functions inside the #ClutterBehaviour::alpha_notify
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* virtual function, and can control multiple #ClutterActor<!-- -->s as well.
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*
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* For convenience, it is possible to use the clutter_actor_animate()
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* function call which will take care of setting up and tearing down
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* a #ClutterAnimation instance and animate an actor between its current
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* state and the specified final state.
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*
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* #ClutterAnimation is available since Clutter 1.0
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib-object.h>
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#include <gobject/gvaluecollector.h>
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#include "clutter-alpha.h"
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#include "clutter-animatable.h"
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#include "clutter-animation.h"
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#include "clutter-debug.h"
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#include "clutter-enum-types.h"
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#include "clutter-interval.h"
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#include "clutter-private.h"
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enum
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{
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PROP_0,
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PROP_OBJECT,
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PROP_MODE,
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PROP_DURATION,
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PROP_LOOP,
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PROP_TIMELINE,
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PROP_ALPHA
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};
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enum
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{
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STARTED,
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COMPLETED,
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LAST_SIGNAL
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};
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#define CLUTTER_ANIMATION_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_ANIMATION, ClutterAnimationPrivate))
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struct _ClutterAnimationPrivate
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{
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GObject *object;
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GHashTable *properties;
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ClutterAlpha *alpha;
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guint timeline_started_id;
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guint timeline_completed_id;
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guint alpha_notify_id;
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};
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static guint animation_signals[LAST_SIGNAL] = { 0, };
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static GQuark quark_object_animation = 0;
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G_DEFINE_TYPE (ClutterAnimation, clutter_animation, G_TYPE_OBJECT);
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static void
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clutter_animation_real_completed (ClutterAnimation *self)
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{
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ClutterAnimationPrivate *priv = self->priv;
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ClutterAnimation *animation;
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/* at this point, if this animation was created by clutter_actor_animate()
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* and friends, the animation will be attached to the object's data; since
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* we want to allow developers to use g_signal_connect_after("completed")
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* to concatenate a new animation, we need to remove the animation back
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* pointer here, and unref() the animation
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*/
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animation = g_object_get_qdata (priv->object, quark_object_animation);
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if (animation == self)
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{
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g_object_set_qdata (priv->object, quark_object_animation, NULL);
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g_object_unref (animation);
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}
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}
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static void
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clutter_animation_finalize (GObject *gobject)
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{
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ClutterAnimationPrivate *priv = CLUTTER_ANIMATION (gobject)->priv;
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CLUTTER_NOTE (ANIMATION, "Destroying properties hash table");
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g_hash_table_destroy (priv->properties);
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G_OBJECT_CLASS (clutter_animation_parent_class)->finalize (gobject);
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}
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static void
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clutter_animation_dispose (GObject *gobject)
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{
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ClutterAnimationPrivate *priv = CLUTTER_ANIMATION (gobject)->priv;
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ClutterTimeline *timeline;
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if (priv->alpha != NULL)
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timeline = clutter_alpha_get_timeline (priv->alpha);
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else
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timeline = NULL;
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if (timeline != NULL && priv->timeline_started_id != 0)
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g_signal_handler_disconnect (timeline, priv->timeline_started_id);
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if (timeline != NULL && priv->timeline_completed_id != 0)
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g_signal_handler_disconnect (timeline, priv->timeline_completed_id);
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priv->timeline_started_id = 0;
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priv->timeline_completed_id = 0;
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if (priv->alpha != NULL)
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{
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if (priv->alpha_notify_id != 0)
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g_signal_handler_disconnect (priv->alpha, priv->alpha_notify_id);
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g_object_unref (priv->alpha);
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}
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priv->alpha_notify_id = 0;
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priv->alpha = NULL;
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if (priv->object != NULL)
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g_object_unref (priv->object);
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priv->object = NULL;
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G_OBJECT_CLASS (clutter_animation_parent_class)->dispose (gobject);
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}
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static void
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clutter_animation_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterAnimation *animation = CLUTTER_ANIMATION (gobject);
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switch (prop_id)
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{
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case PROP_OBJECT:
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clutter_animation_set_object (animation, g_value_get_object (value));
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break;
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case PROP_MODE:
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clutter_animation_set_mode (animation, g_value_get_ulong (value));
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break;
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case PROP_DURATION:
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clutter_animation_set_duration (animation, g_value_get_uint (value));
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break;
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case PROP_LOOP:
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clutter_animation_set_loop (animation, g_value_get_boolean (value));
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break;
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case PROP_TIMELINE:
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clutter_animation_set_timeline (animation, g_value_get_object (value));
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break;
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case PROP_ALPHA:
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clutter_animation_set_alpha (animation, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_animation_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterAnimation *animation = CLUTTER_ANIMATION (gobject);
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ClutterAnimationPrivate *priv = animation->priv;
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switch (prop_id)
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{
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case PROP_OBJECT:
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g_value_set_object (value, priv->object);
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break;
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case PROP_MODE:
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g_value_set_ulong (value, clutter_animation_get_mode (animation));
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break;
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case PROP_DURATION:
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g_value_set_uint (value, clutter_animation_get_duration (animation));
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break;
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case PROP_LOOP:
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g_value_set_boolean (value, clutter_animation_get_loop (animation));
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break;
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case PROP_TIMELINE:
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g_value_set_object (value, clutter_animation_get_timeline (animation));
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break;
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case PROP_ALPHA:
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g_value_set_object (value, clutter_animation_get_alpha (animation));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_animation_class_init (ClutterAnimationClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GParamSpec *pspec;
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quark_object_animation =
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g_quark_from_static_string ("clutter-actor-animation");
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g_type_class_add_private (klass, sizeof (ClutterAnimationPrivate));
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klass->completed = clutter_animation_real_completed;
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gobject_class->set_property = clutter_animation_set_property;
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gobject_class->get_property = clutter_animation_get_property;
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gobject_class->dispose = clutter_animation_dispose;
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gobject_class->finalize = clutter_animation_finalize;
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/**
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* ClutterAnimation:objct:
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*
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* The #GObject to which the animation applies.
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*
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* Since: 1.0
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*/
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pspec = g_param_spec_object ("object",
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"Object",
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"Object to which the animation applies",
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G_TYPE_OBJECT,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_OBJECT, pspec);
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/**
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* ClutterAnimation:mode:
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*
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* The animation mode, either a value from #ClutterAnimationMode
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* or a value returned by clutter_alpha_register_func(). The
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* default value is %CLUTTER_LINEAR.
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*
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* Since: 1.0
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*/
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pspec = g_param_spec_ulong ("mode",
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"Mode",
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"The mode of the animation",
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0, G_MAXULONG,
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CLUTTER_LINEAR,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_MODE, pspec);
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/**
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* ClutterAnimation:duration:
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*
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* The duration of the animation, expressed in milliseconds.
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*
|
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* Since: 1.0
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*/
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pspec = g_param_spec_uint ("duration",
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"Duration",
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"Duration of the animation, in milliseconds",
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0, G_MAXUINT, 0,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_DURATION, pspec);
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/**
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* ClutterAnimation:loop:
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*
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* Whether the animation should loop.
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*
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* Since: 1.0
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*/
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pspec = g_param_spec_boolean ("loop",
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"Loop",
|
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"Whether the animation should loop",
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FALSE,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_LOOP, pspec);
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/**
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* ClutterAnimation:timeline:
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*
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* The #ClutterTimeline used by the animation.
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*
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* Since: 1.0
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*/
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pspec = g_param_spec_object ("timeline",
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"Timeline",
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"The timeline used by the animation",
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CLUTTER_TYPE_TIMELINE,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_TIMELINE, pspec);
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/**
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* ClutterAnimation:alpha:
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*
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* The #ClutterAlpha used by the animation.
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*
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* Since: 1.0
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*/
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pspec = g_param_spec_object ("alpha",
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"Alpha",
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"The alpha used by the animation",
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CLUTTER_TYPE_ALPHA,
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CLUTTER_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, PROP_ALPHA, pspec);
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/**
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* ClutterAnimation::started:
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* @animation: the animation that emitted the signal
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*
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* The ::started signal is emitted once the animation has been
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* started
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*
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* Since: 1.0
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*/
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animation_signals[STARTED] =
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g_signal_new (I_("started"),
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (ClutterAnimationClass, started),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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|
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/**
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* ClutterAnimation::completed:
|
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* @animation: the animation that emitted the signal
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*
|
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* The ::completed signal is emitted once the animation has
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* been completed.
|
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*
|
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* The @animation instance is guaranteed to be valid for the entire
|
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* duration of the signal emission chain.
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*
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* Since: 1.0
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*/
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animation_signals[COMPLETED] =
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g_signal_new (I_("completed"),
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G_TYPE_FROM_CLASS (klass),
|
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (ClutterAnimationClass, completed),
|
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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static void
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clutter_animation_init (ClutterAnimation *self)
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{
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self->priv = CLUTTER_ANIMATION_GET_PRIVATE (self);
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|
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self->priv->properties =
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g_hash_table_new_full (g_str_hash, g_str_equal,
|
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(GDestroyNotify) g_free,
|
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(GDestroyNotify) g_object_unref);
|
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}
|
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|
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static inline void
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clutter_animation_bind_property_internal (ClutterAnimation *animation,
|
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GParamSpec *pspec,
|
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ClutterInterval *interval)
|
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{
|
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ClutterAnimationPrivate *priv = animation->priv;
|
|
|
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if (!clutter_interval_validate (interval, pspec))
|
|
{
|
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g_warning ("Cannot bind property '%s': the interval is out "
|
|
"of bounds",
|
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pspec->name);
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return;
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}
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|
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g_hash_table_insert (priv->properties,
|
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g_strdup (pspec->name),
|
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g_object_ref_sink (interval));
|
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}
|
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|
|
static inline void
|
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clutter_animation_update_property_internal (ClutterAnimation *animation,
|
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GParamSpec *pspec,
|
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ClutterInterval *interval)
|
|
{
|
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ClutterAnimationPrivate *priv = animation->priv;
|
|
|
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if (!clutter_interval_validate (interval, pspec))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the interval is out "
|
|
"of bounds",
|
|
pspec->name);
|
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return;
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}
|
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|
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g_hash_table_replace (priv->properties,
|
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g_strdup (pspec->name),
|
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g_object_ref_sink (interval));
|
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}
|
|
|
|
static GParamSpec *
|
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clutter_animation_validate_bind (ClutterAnimation *animation,
|
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const char *property_name,
|
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GType argtype)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
GObjectClass *klass;
|
|
GParamSpec *pspec;
|
|
|
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priv = animation->priv;
|
|
|
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if (G_UNLIKELY (!priv->object))
|
|
{
|
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g_warning ("Cannot bind property '%s': the animation has no "
|
|
"object set. You need to call clutter_animation_set_object() "
|
|
"first to be able to bind a property",
|
|
property_name);
|
|
return NULL;
|
|
}
|
|
|
|
if (G_UNLIKELY (clutter_animation_has_property (animation, property_name)))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the animation already has "
|
|
"a bound property with the same name",
|
|
property_name);
|
|
return NULL;
|
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}
|
|
|
|
klass = G_OBJECT_GET_CLASS (priv->object);
|
|
pspec = g_object_class_find_property (klass, property_name);
|
|
if (!pspec)
|
|
{
|
|
g_warning ("Cannot bind property '%s': objects of type '%s' have "
|
|
"no such property",
|
|
property_name,
|
|
g_type_name (G_OBJECT_TYPE (priv->object)));
|
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return NULL;
|
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}
|
|
|
|
if (!(pspec->flags & G_PARAM_WRITABLE))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the property is not writable",
|
|
property_name);
|
|
return NULL;
|
|
}
|
|
|
|
if (!g_value_type_compatible (G_PARAM_SPEC_VALUE_TYPE (pspec),
|
|
argtype))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the interval value of "
|
|
"type '%s' is not compatible with the property value "
|
|
"of type '%s'",
|
|
property_name,
|
|
g_type_name (argtype),
|
|
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
|
return NULL;
|
|
}
|
|
return pspec;
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_bind_interval:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: the property to control
|
|
* @interval: (transfer full): a #ClutterInterval
|
|
*
|
|
* Binds @interval to the @property_name of the #GObject
|
|
* attached to @animation. The #ClutterAnimation will take
|
|
* ownership of the passed #ClutterInterval. For more information
|
|
* about animations, see clutter_actor_animate().
|
|
*
|
|
* If you need to update the interval instance use
|
|
* clutter_animation_update_property() instead.
|
|
*
|
|
* Return value: (transfer none): The animation itself.
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_animation_bind_interval (ClutterAnimation *animation,
|
|
const gchar *property_name,
|
|
ClutterInterval *interval)
|
|
{
|
|
GParamSpec *pspec;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
g_return_val_if_fail (property_name != NULL, NULL);
|
|
g_return_val_if_fail (CLUTTER_IS_INTERVAL (interval), NULL);
|
|
|
|
pspec = clutter_animation_validate_bind (animation, property_name,
|
|
clutter_interval_get_value_type (interval));
|
|
if (pspec == NULL)
|
|
return NULL;
|
|
|
|
clutter_animation_bind_property_internal (animation, pspec, interval);
|
|
|
|
return animation;
|
|
}
|
|
|
|
|
|
/**
|
|
* clutter_animation_bind:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: the property to control
|
|
* @final: The final value of the property
|
|
*
|
|
* Adds a single property with name @property_name to the
|
|
* animation @animation. For more information about animations,
|
|
* see clutter_actor_animate().
|
|
*
|
|
* This method returns the animation primarily to make chained
|
|
* calls convenient in language bindings.
|
|
*
|
|
* Return value: (transfer none): The animation itself.
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_animation_bind (ClutterAnimation *animation,
|
|
const gchar *property_name,
|
|
const GValue *final)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
GParamSpec *pspec;
|
|
ClutterInterval *interval;
|
|
GType type;
|
|
GValue initial = { 0, };
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
g_return_val_if_fail (property_name != NULL, NULL);
|
|
|
|
priv = animation->priv;
|
|
|
|
type = G_VALUE_TYPE (final);
|
|
pspec = clutter_animation_validate_bind (animation, property_name,
|
|
type);
|
|
if (pspec == NULL)
|
|
return NULL;
|
|
|
|
g_value_init (&initial, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
g_object_get_property (priv->object, property_name, &initial);
|
|
|
|
interval = clutter_interval_new_with_values (type, &initial, final);
|
|
g_value_unset (&initial);
|
|
|
|
clutter_animation_bind_property_internal (animation, pspec, interval);
|
|
|
|
return animation;
|
|
}
|
|
|
|
|
|
/**
|
|
* clutter_animation_unbind_property:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: name of the property
|
|
*
|
|
* Removes @property_name from the list of animated properties.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_unbind_property (ClutterAnimation *animation,
|
|
const gchar *property_name)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
g_return_if_fail (property_name != NULL);
|
|
|
|
priv = animation->priv;
|
|
|
|
if (!clutter_animation_has_property (animation, property_name))
|
|
{
|
|
g_warning ("Cannot unbind property '%s': the animation has "
|
|
"no bound property with that name",
|
|
property_name);
|
|
return;
|
|
}
|
|
|
|
g_hash_table_remove (priv->properties, property_name);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_has_property:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: name of the property
|
|
*
|
|
* Checks whether @animation is controlling @property_name.
|
|
*
|
|
* Return value: %TRUE if the property is animated by the
|
|
* #ClutterAnimation, %FALSE otherwise
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
gboolean
|
|
clutter_animation_has_property (ClutterAnimation *animation,
|
|
const gchar *property_name)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), FALSE);
|
|
g_return_val_if_fail (property_name != NULL, FALSE);
|
|
|
|
priv = animation->priv;
|
|
|
|
return g_hash_table_lookup (priv->properties, property_name) != NULL;
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_update_interval:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: name of the property
|
|
* @interval: a #ClutterInterval
|
|
*
|
|
* Changes the @interval for @property_name. The #ClutterAnimation
|
|
* will take ownership of the passed #ClutterInterval.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_update_interval (ClutterAnimation *animation,
|
|
const gchar *property_name,
|
|
ClutterInterval *interval)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
GObjectClass *klass;
|
|
GParamSpec *pspec;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
g_return_if_fail (property_name != NULL);
|
|
g_return_if_fail (CLUTTER_IS_INTERVAL (interval));
|
|
|
|
priv = animation->priv;
|
|
|
|
if (!clutter_animation_has_property (animation, property_name))
|
|
{
|
|
g_warning ("Cannot unbind property '%s': the animation has "
|
|
"no bound property with that name",
|
|
property_name);
|
|
return;
|
|
}
|
|
|
|
klass = G_OBJECT_GET_CLASS (priv->object);
|
|
pspec = g_object_class_find_property (klass, property_name);
|
|
if (!pspec)
|
|
{
|
|
g_warning ("Cannot bind property '%s': objects of type '%s' have "
|
|
"no such property",
|
|
property_name,
|
|
g_type_name (G_OBJECT_TYPE (priv->object)));
|
|
return;
|
|
}
|
|
|
|
if (!g_value_type_compatible (G_PARAM_SPEC_VALUE_TYPE (pspec),
|
|
clutter_interval_get_value_type (interval)))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the interval value of "
|
|
"type '%s' is not compatible with the property value "
|
|
"of type '%s'",
|
|
property_name,
|
|
g_type_name (clutter_interval_get_value_type (interval)),
|
|
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
|
return;
|
|
}
|
|
|
|
clutter_animation_update_property_internal (animation, pspec, interval);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_interval:
|
|
* @animation: a #ClutterAnimation
|
|
* @property_name: name of the property
|
|
*
|
|
* Retrieves the #ClutterInterval associated to @property_name
|
|
* inside @animation.
|
|
*
|
|
* Return value: (transfer none): a #ClutterInterval or %NULL if no
|
|
* property with the same name was found. The returned interval is
|
|
* owned by the #ClutterAnimation and should not be unreferenced
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterInterval *
|
|
clutter_animation_get_interval (ClutterAnimation *animation,
|
|
const gchar *property_name)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
g_return_val_if_fail (property_name != NULL, NULL);
|
|
|
|
priv = animation->priv;
|
|
|
|
return g_hash_table_lookup (priv->properties, property_name);
|
|
}
|
|
|
|
static void
|
|
on_timeline_started (ClutterTimeline *timeline,
|
|
ClutterAnimation *animation)
|
|
{
|
|
g_signal_emit (animation, animation_signals[STARTED], 0);
|
|
}
|
|
|
|
static void
|
|
on_timeline_completed (ClutterTimeline *timeline,
|
|
ClutterAnimation *animation)
|
|
{
|
|
CLUTTER_NOTE (ANIMATION, "Timeline [%p] complete", timeline);
|
|
|
|
if (!clutter_animation_get_loop (animation))
|
|
g_signal_emit (animation, animation_signals[COMPLETED], 0);
|
|
}
|
|
|
|
static void
|
|
on_alpha_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
ClutterAnimation *animation)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
GList *properties, *p;
|
|
gdouble alpha_value;
|
|
gboolean is_animatable = FALSE;
|
|
ClutterAnimatable *animatable = NULL;
|
|
|
|
/* make sure the animation survives the notification */
|
|
g_object_ref (animation);
|
|
|
|
priv = animation->priv;
|
|
|
|
alpha_value = clutter_alpha_get_alpha (CLUTTER_ALPHA (gobject));
|
|
|
|
if (CLUTTER_IS_ANIMATABLE (priv->object))
|
|
{
|
|
animatable = CLUTTER_ANIMATABLE (priv->object);
|
|
is_animatable = TRUE;
|
|
}
|
|
|
|
g_object_freeze_notify (priv->object);
|
|
|
|
properties = g_hash_table_get_keys (priv->properties);
|
|
for (p = properties; p != NULL; p = p->next)
|
|
{
|
|
const gchar *p_name = p->data;
|
|
ClutterInterval *interval;
|
|
GValue value = { 0, };
|
|
gboolean apply;
|
|
|
|
interval = g_hash_table_lookup (priv->properties, p_name);
|
|
g_assert (CLUTTER_IS_INTERVAL (interval));
|
|
|
|
g_value_init (&value, clutter_interval_get_value_type (interval));
|
|
|
|
if (is_animatable)
|
|
{
|
|
const GValue *initial, *final;
|
|
|
|
initial = clutter_interval_peek_initial_value (interval);
|
|
final = clutter_interval_peek_final_value (interval);
|
|
|
|
apply = clutter_animatable_animate_property (animatable, animation,
|
|
p_name,
|
|
initial, final,
|
|
alpha_value,
|
|
&value);
|
|
}
|
|
else
|
|
{
|
|
apply = clutter_interval_compute_value (interval,
|
|
alpha_value,
|
|
&value);
|
|
}
|
|
|
|
if (apply)
|
|
g_object_set_property (priv->object, p_name, &value);
|
|
|
|
g_value_unset (&value);
|
|
}
|
|
|
|
g_list_free (properties);
|
|
|
|
g_object_thaw_notify (priv->object);
|
|
|
|
g_object_unref (animation);
|
|
}
|
|
|
|
static ClutterAlpha *
|
|
clutter_animation_get_alpha_internal (ClutterAnimation *animation)
|
|
{
|
|
ClutterAnimationPrivate *priv = animation->priv;
|
|
|
|
if (priv->alpha == NULL)
|
|
{
|
|
ClutterAlpha *alpha;
|
|
|
|
alpha = clutter_alpha_new ();
|
|
clutter_alpha_set_mode (alpha, CLUTTER_LINEAR);
|
|
|
|
priv->alpha_notify_id =
|
|
g_signal_connect (alpha, "notify::alpha",
|
|
G_CALLBACK (on_alpha_notify),
|
|
animation);
|
|
|
|
priv->alpha = g_object_ref_sink (alpha);
|
|
|
|
g_object_notify (G_OBJECT (animation), "alpha");
|
|
}
|
|
|
|
return priv->alpha;
|
|
}
|
|
|
|
static ClutterTimeline *
|
|
clutter_animation_get_timeline_internal (ClutterAnimation *animation)
|
|
{
|
|
ClutterAnimationPrivate *priv = animation->priv;
|
|
ClutterTimeline *timeline;
|
|
ClutterAlpha *alpha;
|
|
|
|
alpha = clutter_animation_get_alpha_internal (animation);
|
|
timeline = clutter_alpha_get_timeline (alpha);
|
|
if (timeline != NULL)
|
|
return timeline;
|
|
|
|
timeline = g_object_new (CLUTTER_TYPE_TIMELINE, NULL);
|
|
|
|
priv->timeline_started_id =
|
|
g_signal_connect (timeline, "started",
|
|
G_CALLBACK (on_timeline_started),
|
|
animation);
|
|
|
|
priv->timeline_completed_id =
|
|
g_signal_connect (timeline, "completed",
|
|
G_CALLBACK (on_timeline_completed),
|
|
animation);
|
|
|
|
clutter_alpha_set_timeline (alpha, timeline);
|
|
|
|
/* the alpha owns the timeline now */
|
|
g_object_unref (timeline);
|
|
|
|
g_object_notify (G_OBJECT (animation), "timeline");
|
|
|
|
return timeline;
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_new:
|
|
*
|
|
* Creates a new #ClutterAnimation instance. You should set the
|
|
* #GObject to be animated using clutter_animation_set_object(),
|
|
* set the duration with clutter_animation_set_duration() and the
|
|
* easing mode using clutter_animation_set_mode().
|
|
*
|
|
* Use clutter_animation_bind() or clutter_animation_bind_interval()
|
|
* to define the properties to be animated. The interval and the
|
|
* animated properties can be updated at runtime.
|
|
*
|
|
* The clutter_actor_animate() and relative family of functions provide
|
|
* an easy way to animate a #ClutterActor and automatically manage the
|
|
* lifetime of a #ClutterAnimation instance, so you should consider using
|
|
* those functions instead of manually creating an animation.
|
|
*
|
|
* Return value: the newly created #ClutterAnimation. Use g_object_unref()
|
|
* to release the associated resources
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_animation_new (void)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_ANIMATION, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_object:
|
|
* @animation: a #ClutterAnimation
|
|
* @object: a #GObject
|
|
*
|
|
* Attaches @animation to @object. The #ClutterAnimation will take a
|
|
* reference on @object.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_object (ClutterAnimation *animation,
|
|
GObject *object)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
g_return_if_fail (object == NULL || G_IS_OBJECT (object));
|
|
|
|
priv = animation->priv;
|
|
|
|
if (priv->object != NULL)
|
|
{
|
|
g_object_set_qdata (priv->object, quark_object_animation, NULL);
|
|
|
|
g_object_unref (priv->object);
|
|
priv->object = NULL;
|
|
}
|
|
|
|
if (object != NULL)
|
|
priv->object = g_object_ref (object);
|
|
|
|
g_object_notify (G_OBJECT (animation), "object");
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_object:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves the #GObject attached to @animation.
|
|
*
|
|
* Return value: (transfer none): a #GObject
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
GObject *
|
|
clutter_animation_get_object (ClutterAnimation *animation)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
|
|
return animation->priv->object;
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_mode:
|
|
* @animation: a #ClutterAnimation
|
|
* @mode: an animation mode logical id
|
|
*
|
|
* Sets the animation @mode of @animation. The animation @mode is
|
|
* a logical id, either coming from the #ClutterAnimationMode enumeration
|
|
* or the return value of clutter_alpha_register_func().
|
|
*
|
|
* This function will also set #ClutterAnimation:alpha if needed.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_mode (ClutterAnimation *animation,
|
|
gulong mode)
|
|
{
|
|
ClutterAlpha *alpha;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
|
|
g_object_freeze_notify (G_OBJECT (animation));
|
|
|
|
alpha = clutter_animation_get_alpha_internal (animation);
|
|
clutter_alpha_set_mode (alpha, mode);
|
|
|
|
g_object_notify (G_OBJECT (animation), "mode");
|
|
|
|
g_object_thaw_notify (G_OBJECT (animation));
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_mode:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves the animation mode of @animation, as set by
|
|
* clutter_animation_set_mode().
|
|
*
|
|
* Return value: the mode for the animation
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
gulong
|
|
clutter_animation_get_mode (ClutterAnimation *animation)
|
|
{
|
|
ClutterAlpha *alpha;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), CLUTTER_LINEAR);
|
|
|
|
alpha = clutter_animation_get_alpha_internal (animation);
|
|
|
|
return clutter_alpha_get_mode (alpha);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_duration:
|
|
* @animation: a #ClutterAnimation
|
|
* @msecs: the duration in milliseconds
|
|
*
|
|
* Sets the duration of @animation in milliseconds.
|
|
*
|
|
* This function will set #ClutterAnimation:alpha and
|
|
* #ClutterAnimation:timeline if needed.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_duration (ClutterAnimation *animation,
|
|
gint msecs)
|
|
{
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
|
|
g_object_freeze_notify (G_OBJECT (animation));
|
|
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
clutter_timeline_set_duration (timeline, msecs);
|
|
clutter_timeline_rewind (timeline);
|
|
|
|
g_object_notify (G_OBJECT (animation), "duration");
|
|
|
|
g_object_thaw_notify (G_OBJECT (animation));
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_loop:
|
|
* @animation: a #ClutterAnimation
|
|
* @loop: %TRUE if the animation should loop
|
|
*
|
|
* Sets whether @animation should loop over itself once finished.
|
|
*
|
|
* A looping #ClutterAnimation will not emit the #ClutterAnimation::completed
|
|
* signal when finished.
|
|
*
|
|
* This function will set #ClutterAnimation:alpha and
|
|
* #ClutterAnimation:timeline if needed.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_loop (ClutterAnimation *animation,
|
|
gboolean loop)
|
|
{
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
|
|
g_object_freeze_notify (G_OBJECT (animation));
|
|
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
clutter_timeline_set_loop (timeline, loop);
|
|
|
|
g_object_notify (G_OBJECT (animation), "loop");
|
|
|
|
g_object_thaw_notify (G_OBJECT (animation));
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_loop:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves whether @animation is looping.
|
|
*
|
|
* Return value: %TRUE if the animation is looping
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
gboolean
|
|
clutter_animation_get_loop (ClutterAnimation *animation)
|
|
{
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), FALSE);
|
|
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
|
|
return clutter_timeline_get_loop (timeline);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_duration:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves the duration of @animation, in milliseconds.
|
|
*
|
|
* Return value: the duration of the animation
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
guint
|
|
clutter_animation_get_duration (ClutterAnimation *animation)
|
|
{
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), 0);
|
|
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
|
|
return clutter_timeline_get_duration (timeline);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_timeline:
|
|
* @animation: a #ClutterAnimation
|
|
* @timeline: a #ClutterTimeline, or %NULL to unset the
|
|
* current #ClutterTimeline
|
|
*
|
|
* Sets the #ClutterTimeline used by @animation.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_timeline (ClutterAnimation *animation,
|
|
ClutterTimeline *timeline)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
ClutterTimeline *cur_timeline;
|
|
ClutterAlpha *alpha;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
g_return_if_fail (timeline == NULL || CLUTTER_IS_TIMELINE (timeline));
|
|
|
|
priv = animation->priv;
|
|
|
|
if (priv->alpha != NULL)
|
|
cur_timeline = clutter_alpha_get_timeline (priv->alpha);
|
|
else
|
|
cur_timeline = NULL;
|
|
|
|
if (cur_timeline == timeline)
|
|
return;
|
|
|
|
g_object_freeze_notify (G_OBJECT (animation));
|
|
|
|
if (cur_timeline != NULL && priv->timeline_started_id != 0)
|
|
g_signal_handler_disconnect (cur_timeline, priv->timeline_started_id);
|
|
|
|
if (cur_timeline != NULL && priv->timeline_completed_id != 0)
|
|
g_signal_handler_disconnect (cur_timeline, priv->timeline_completed_id);
|
|
|
|
priv->timeline_started_id = 0;
|
|
priv->timeline_completed_id = 0;
|
|
|
|
alpha = clutter_animation_get_alpha_internal (animation);
|
|
clutter_alpha_set_timeline (alpha, timeline);
|
|
g_object_notify (G_OBJECT (animation), "timeline");
|
|
g_object_notify (G_OBJECT (animation), "duration");
|
|
g_object_notify (G_OBJECT (animation), "loop");
|
|
|
|
if (timeline)
|
|
{
|
|
priv->timeline_started_id =
|
|
g_signal_connect (timeline, "started",
|
|
G_CALLBACK (on_timeline_started),
|
|
animation);
|
|
priv->timeline_completed_id =
|
|
g_signal_connect (timeline, "completed",
|
|
G_CALLBACK (on_timeline_completed),
|
|
animation);
|
|
}
|
|
|
|
g_object_thaw_notify (G_OBJECT (animation));
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_timeline:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves the #ClutterTimeline used by @animation
|
|
*
|
|
* Return value: (transfer none): the timeline used by the animation
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterTimeline *
|
|
clutter_animation_get_timeline (ClutterAnimation *animation)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
|
|
return clutter_animation_get_timeline_internal (animation);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_set_alpha:
|
|
* @animation: a #ClutterAnimation
|
|
* @alpha: a #ClutterAlpha, or %NULL to unset the current #ClutterAlpha
|
|
*
|
|
* Sets @alpha as the #ClutterAlpha used by @animation.
|
|
*
|
|
* If @alpha is not %NULL, the #ClutterAnimation will take ownership
|
|
* of the #ClutterAlpha instance.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_set_alpha (ClutterAnimation *animation,
|
|
ClutterAlpha *alpha)
|
|
{
|
|
ClutterAnimationPrivate *priv;
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
g_return_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha));
|
|
|
|
priv = animation->priv;
|
|
|
|
if (priv->alpha == alpha)
|
|
return;
|
|
|
|
g_object_freeze_notify (G_OBJECT (animation));
|
|
|
|
if (priv->alpha != NULL)
|
|
timeline = clutter_alpha_get_timeline (priv->alpha);
|
|
else
|
|
timeline = NULL;
|
|
|
|
/* disconnect the old timeline first */
|
|
if (timeline != NULL && priv->timeline_started_id != 0)
|
|
{
|
|
g_signal_handler_disconnect (timeline, priv->timeline_started_id);
|
|
priv->timeline_started_id = 0;
|
|
}
|
|
|
|
if (timeline != NULL && priv->timeline_completed_id != 0)
|
|
{
|
|
g_signal_handler_disconnect (timeline, priv->timeline_completed_id);
|
|
priv->timeline_completed_id = 0;
|
|
}
|
|
|
|
/* then we need to disconnect the signal handler from the old alpha */
|
|
if (priv->alpha_notify_id != 0)
|
|
{
|
|
g_signal_handler_disconnect (priv->alpha, priv->alpha_notify_id);
|
|
priv->alpha_notify_id = 0;
|
|
}
|
|
|
|
if (priv->alpha != NULL)
|
|
{
|
|
/* this will take care of any reference we hold on the timeline */
|
|
g_object_unref (priv->alpha);
|
|
priv->alpha = NULL;
|
|
}
|
|
|
|
if (alpha == NULL)
|
|
goto out;
|
|
|
|
priv->alpha = g_object_ref_sink (alpha);
|
|
priv->alpha_notify_id =
|
|
g_signal_connect (priv->alpha, "notify::value",
|
|
G_CALLBACK (on_alpha_notify),
|
|
animation);
|
|
|
|
/* if the alpha has a timeline then we use it, otherwise we create one */
|
|
timeline = clutter_alpha_get_timeline (priv->alpha);
|
|
if (timeline != NULL)
|
|
{
|
|
priv->timeline_started_id =
|
|
g_signal_connect (timeline, "started",
|
|
G_CALLBACK (on_timeline_started),
|
|
animation);
|
|
priv->timeline_completed_id =
|
|
g_signal_connect (timeline, "completed",
|
|
G_CALLBACK (on_timeline_completed),
|
|
animation);
|
|
}
|
|
else
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
|
|
out:
|
|
/* emit all relevant notifications */
|
|
g_object_notify (G_OBJECT (animation), "mode");
|
|
g_object_notify (G_OBJECT (animation), "duration");
|
|
g_object_notify (G_OBJECT (animation), "loop");
|
|
g_object_notify (G_OBJECT (animation), "alpha");
|
|
g_object_notify (G_OBJECT (animation), "timeline");
|
|
|
|
g_object_thaw_notify (G_OBJECT (animation));
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_get_alpha:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Retrieves the #ClutterAlpha used by @animation.
|
|
*
|
|
* Return value: (transfer none): the alpha object used by the animation
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAlpha *
|
|
clutter_animation_get_alpha (ClutterAnimation *animation)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), NULL);
|
|
|
|
return clutter_animation_get_alpha_internal (animation);
|
|
}
|
|
|
|
/**
|
|
* clutter_animation_completed:
|
|
* @animation: a #ClutterAnimation
|
|
*
|
|
* Emits the ::completed signal on @animation
|
|
*
|
|
* When using this function with a #ClutterAnimation created
|
|
* by the clutter_actor_animate() family of functions, @animation
|
|
* will be unreferenced and it will not be valid anymore,
|
|
* unless g_object_ref() was called before calling this function
|
|
* or unless a reference was taken inside a handler for the
|
|
* #ClutterAnimation::completed signal
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void
|
|
clutter_animation_completed (ClutterAnimation *animation)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_ANIMATION (animation));
|
|
|
|
g_signal_emit (animation, animation_signals[COMPLETED], 0);
|
|
}
|
|
|
|
/*
|
|
* starts the timeline
|
|
*/
|
|
static void
|
|
clutter_animation_start (ClutterAnimation *animation)
|
|
{
|
|
ClutterTimeline *timeline;
|
|
|
|
timeline = clutter_animation_get_timeline_internal (animation);
|
|
|
|
if (G_LIKELY (timeline != NULL))
|
|
clutter_timeline_start (timeline);
|
|
else
|
|
{
|
|
/* sanity check */
|
|
g_warning (G_STRLOC ": no timeline found, unable to start the animation");
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_animation_setup_property (ClutterAnimation *animation,
|
|
const gchar *property_name,
|
|
const GValue *value,
|
|
GParamSpec *pspec,
|
|
gboolean is_fixed)
|
|
{
|
|
ClutterAnimationPrivate *priv = animation->priv;
|
|
GValue real_value = { 0, };
|
|
|
|
if (pspec->flags & G_PARAM_CONSTRUCT_ONLY)
|
|
{
|
|
g_warning ("Cannot bind property '%s': the property is "
|
|
"construct-only",
|
|
property_name);
|
|
return;
|
|
}
|
|
|
|
if (!(pspec->flags & G_PARAM_WRITABLE))
|
|
{
|
|
g_warning ("Cannot bind property '%s': the property is "
|
|
"not writable",
|
|
property_name);
|
|
return;
|
|
}
|
|
|
|
/* initialize the real value that will be used to store the
|
|
* final state of the animation
|
|
*/
|
|
g_value_init (&real_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
|
|
/* if it's not the same type of the GParamSpec value, try to
|
|
* convert it using the GValue transformation API, otherwise
|
|
* just copy it
|
|
*/
|
|
if (!g_type_is_a (G_VALUE_TYPE (value), G_VALUE_TYPE (&real_value)))
|
|
{
|
|
if (!g_value_type_compatible (G_VALUE_TYPE (value),
|
|
G_VALUE_TYPE (&real_value)) &&
|
|
!g_value_type_compatible (G_VALUE_TYPE (&real_value),
|
|
G_VALUE_TYPE (value)))
|
|
{
|
|
g_warning ("%s: Unable to convert from %s to %s for "
|
|
"the property '%s' of object %s",
|
|
G_STRLOC,
|
|
g_type_name (G_VALUE_TYPE (value)),
|
|
g_type_name (G_VALUE_TYPE (&real_value)),
|
|
property_name,
|
|
G_OBJECT_TYPE_NAME (priv->object));
|
|
g_value_unset (&real_value);
|
|
return;
|
|
}
|
|
|
|
if (!g_value_transform (value, &real_value))
|
|
{
|
|
g_warning ("%s: Unable to transform from %s to %s",
|
|
G_STRLOC,
|
|
g_type_name (G_VALUE_TYPE (value)),
|
|
g_type_name (G_VALUE_TYPE (&real_value)));
|
|
g_value_unset (&real_value);
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
g_value_copy (value, &real_value);
|
|
|
|
/* create an interval and bind it to the property, in case
|
|
* it's not a fixed property, otherwise just set it
|
|
*/
|
|
if (G_LIKELY (!is_fixed))
|
|
{
|
|
ClutterInterval *interval;
|
|
GValue cur_value = { 0, };
|
|
|
|
g_value_init (&cur_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
g_object_get_property (priv->object, property_name, &cur_value);
|
|
|
|
interval =
|
|
clutter_interval_new_with_values (G_PARAM_SPEC_VALUE_TYPE (pspec),
|
|
&cur_value,
|
|
&real_value);
|
|
|
|
if (!clutter_animation_has_property (animation, pspec->name))
|
|
clutter_animation_bind_property_internal (animation,
|
|
pspec,
|
|
interval);
|
|
else
|
|
clutter_animation_update_property_internal (animation,
|
|
pspec,
|
|
interval);
|
|
|
|
g_value_unset (&cur_value);
|
|
}
|
|
else
|
|
g_object_set_property (priv->object, property_name, &real_value);
|
|
|
|
g_value_unset (&real_value);
|
|
}
|
|
|
|
static void
|
|
clutter_animation_setupv (ClutterAnimation *animation,
|
|
gint n_properties,
|
|
const gchar * const properties[],
|
|
const GValue *values)
|
|
{
|
|
ClutterAnimationPrivate *priv = animation->priv;
|
|
GObjectClass *klass;
|
|
gint i;
|
|
gboolean is_fixed = FALSE;
|
|
|
|
klass = G_OBJECT_GET_CLASS (priv->object);
|
|
|
|
for (i = 0; i < n_properties; i++)
|
|
{
|
|
const gchar *property_name = properties[i];
|
|
GParamSpec *pspec;
|
|
|
|
if (g_str_has_prefix (property_name, "fixed::"))
|
|
{
|
|
property_name += 7; /* strlen("fixed::") */
|
|
is_fixed = TRUE;
|
|
}
|
|
|
|
pspec = g_object_class_find_property (klass, property_name);
|
|
if (!pspec)
|
|
{
|
|
g_warning ("Cannot bind property '%s': objects of type '%s' do "
|
|
"not have this property",
|
|
property_name,
|
|
g_type_name (G_OBJECT_TYPE (priv->object)));
|
|
break;
|
|
}
|
|
|
|
clutter_animation_setup_property (animation, property_name,
|
|
&values[i],
|
|
pspec,
|
|
is_fixed);
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_animation_setup_valist (ClutterAnimation *animation,
|
|
const gchar *first_property_name,
|
|
va_list var_args)
|
|
{
|
|
ClutterAnimationPrivate *priv = animation->priv;
|
|
GObjectClass *klass;
|
|
const gchar *property_name;
|
|
|
|
klass = G_OBJECT_GET_CLASS (priv->object);
|
|
|
|
property_name = first_property_name;
|
|
while (property_name != NULL)
|
|
{
|
|
GParamSpec *pspec;
|
|
GValue final = { 0, };
|
|
gchar *error = NULL;
|
|
gboolean is_fixed = FALSE;
|
|
|
|
if (g_str_has_prefix (property_name, "signal::"))
|
|
{
|
|
const gchar *signal_name = property_name + 8;
|
|
GCallback callback = va_arg (var_args, GCallback);
|
|
gpointer userdata = va_arg (var_args, gpointer);
|
|
|
|
g_signal_connect (animation, signal_name, callback, userdata);
|
|
}
|
|
else if (g_str_has_prefix (property_name, "signal-"))
|
|
{
|
|
GCallback callback = va_arg (var_args, GCallback);
|
|
gpointer userdata = va_arg (var_args, gpointer);
|
|
const gchar *signal_name;
|
|
GConnectFlags flags;
|
|
|
|
if (g_str_has_prefix (property_name, "signal-after::"))
|
|
{
|
|
signal_name = property_name + 14;
|
|
flags = G_CONNECT_AFTER;
|
|
}
|
|
else if (g_str_has_prefix (property_name, "signal-swapped::"))
|
|
{
|
|
signal_name = property_name + 16;
|
|
flags = G_CONNECT_SWAPPED;
|
|
}
|
|
else
|
|
{
|
|
g_warning ("Unable to connect to '%s': the valid signal "
|
|
"modifiers are 'signal-swapped::' and "
|
|
"'signal-swapped::'",
|
|
property_name);
|
|
break;
|
|
}
|
|
|
|
g_signal_connect_data (animation, signal_name,
|
|
callback,
|
|
userdata,
|
|
NULL,
|
|
flags);
|
|
}
|
|
else
|
|
{
|
|
if (g_str_has_prefix (property_name, "fixed::"))
|
|
{
|
|
property_name += 7; /* strlen("fixed::") */
|
|
is_fixed = TRUE;
|
|
}
|
|
|
|
pspec = g_object_class_find_property (klass, property_name);
|
|
if (!pspec)
|
|
{
|
|
g_warning ("Cannot bind property '%s': objects of type '%s' do "
|
|
"not have this property",
|
|
property_name,
|
|
g_type_name (G_OBJECT_TYPE (priv->object)));
|
|
break;
|
|
}
|
|
|
|
g_value_init (&final, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
G_VALUE_COLLECT (&final, var_args, 0, &error);
|
|
if (error)
|
|
{
|
|
g_warning ("%s: %s", G_STRLOC, error);
|
|
g_free (error);
|
|
break;
|
|
}
|
|
|
|
clutter_animation_setup_property (animation, property_name,
|
|
&final,
|
|
pspec,
|
|
is_fixed);
|
|
}
|
|
|
|
property_name = va_arg (var_args, gchar*);
|
|
}
|
|
}
|
|
|
|
static ClutterAnimation *
|
|
animation_create_for_actor (ClutterActor *actor)
|
|
{
|
|
ClutterAnimation *animation;
|
|
GObject *object = G_OBJECT (actor);
|
|
|
|
animation = g_object_get_qdata (object, quark_object_animation);
|
|
if (animation == NULL)
|
|
{
|
|
animation = clutter_animation_new ();
|
|
clutter_animation_set_object (animation, object);
|
|
g_object_set_qdata (object, quark_object_animation, animation);
|
|
|
|
CLUTTER_NOTE (ANIMATION,
|
|
"Created new Animation [%p] for actor [%p]",
|
|
animation,
|
|
actor);
|
|
}
|
|
else
|
|
{
|
|
CLUTTER_NOTE (ANIMATION,
|
|
"Reusing Animation [%p] for actor [%p]",
|
|
animation,
|
|
actor);
|
|
}
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animate_with_alpha:
|
|
* @actor: a #ClutterActor
|
|
* @alpha: a #ClutterAlpha
|
|
* @first_property_name: the name of a property
|
|
* @VarArgs: a %NULL terminated list of property names and
|
|
* property values
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite behaviour given by the passed @alpha.
|
|
*
|
|
* See clutter_actor_animate() for further details.
|
|
*
|
|
* This function is useful if you want to use an existing #ClutterAlpha
|
|
* to animate @actor.
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is owned by the
|
|
* #ClutterActor and should not be unreferenced with g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animate_with_alpha (ClutterActor *actor,
|
|
ClutterAlpha *alpha,
|
|
const gchar *first_property_name,
|
|
...)
|
|
{
|
|
ClutterAnimation *animation;
|
|
ClutterTimeline *timeline;
|
|
va_list args;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (CLUTTER_IS_ALPHA (alpha), NULL);
|
|
g_return_val_if_fail (first_property_name != NULL, NULL);
|
|
|
|
timeline = clutter_alpha_get_timeline (alpha);
|
|
if (timeline == NULL)
|
|
{
|
|
g_warning ("The passed ClutterAlpha does not have an "
|
|
"associated ClutterTimeline.");
|
|
return NULL;
|
|
}
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_alpha (animation, alpha);
|
|
|
|
va_start (args, first_property_name);
|
|
clutter_animation_setup_valist (animation, first_property_name, args);
|
|
va_end (args);
|
|
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animate_with_timeline:
|
|
* @actor: a #ClutterActor
|
|
* @mode: an animation mode logical id
|
|
* @timeline: a #ClutterTimeline
|
|
* @first_property_name: the name of a property
|
|
* @VarArgs: a %NULL terminated list of property names and
|
|
* property values
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite duration given by @timeline and a speed given by the @mode.
|
|
*
|
|
* See clutter_actor_animate() for further details.
|
|
*
|
|
* This function is useful if you want to use an existing timeline
|
|
* to animate @actor.
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is
|
|
* owned by the #ClutterActor and should not be unreferenced with
|
|
* g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animate_with_timeline (ClutterActor *actor,
|
|
gulong mode,
|
|
ClutterTimeline *timeline,
|
|
const gchar *first_property_name,
|
|
...)
|
|
{
|
|
ClutterAnimation *animation;
|
|
va_list args;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (CLUTTER_IS_TIMELINE (timeline), NULL);
|
|
g_return_val_if_fail (first_property_name != NULL, NULL);
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_mode (animation, mode);
|
|
clutter_animation_set_timeline (animation, timeline);
|
|
|
|
va_start (args, first_property_name);
|
|
clutter_animation_setup_valist (animation, first_property_name, args);
|
|
va_end (args);
|
|
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animate:
|
|
* @actor: a #ClutterActor
|
|
* @mode: an animation mode logical id
|
|
* @duration: duration of the animation, in milliseconds
|
|
* @first_property_name: the name of a property
|
|
* @VarArgs: a %NULL terminated list of property names and
|
|
* property values
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite duration and a speed given by the @mode.
|
|
*
|
|
* For example, this:
|
|
*
|
|
* |[
|
|
* clutter_actor_animate (rectangle, CLUTTER_LINEAR, 250,
|
|
* "width", 100,
|
|
* "height", 100,
|
|
* NULL);
|
|
* ]|
|
|
*
|
|
* will make width and height properties of the #ClutterActor "rectangle"
|
|
* grow linearly between the current value and 100 pixels, in 250 milliseconds.
|
|
*
|
|
* The animation @mode is a logical id, either from the #ClutterAnimationMode
|
|
* enumeration of from clutter_alpha_register_func().
|
|
*
|
|
* All the properties specified will be animated between the current value
|
|
* and the final value. If a property should be set at the beginning of
|
|
* the animation but not updated during the animation, it should be prefixed
|
|
* by the "fixed::" string, for instance:
|
|
*
|
|
* |[
|
|
* clutter_actor_animate (actor, CLUTTER_EASE_IN, 100,
|
|
* "rotation-angle-z", 360,
|
|
* "fixed::rotation-center-z", &center,
|
|
* NULL);
|
|
* ]|
|
|
*
|
|
* Will animate the "rotation-angle-z" property between the current value
|
|
* and 360 degrees, and set the "rotation-center-z" property to the fixed
|
|
* value of the #ClutterVertex "center".
|
|
*
|
|
* This function will implicitly create a #ClutterAnimation object which
|
|
* will be assigned to the @actor and will be returned to the developer
|
|
* to control the animation or to know when the animation has been
|
|
* completed.
|
|
*
|
|
* If a name argument starts with "signal::", "signal-after::" or
|
|
* "signal-swapped::" the two following arguments are used as callback
|
|
* function and data for a signal handler installed on the
|
|
* #ClutterAnimation object for the specified signal name, for
|
|
* instance:
|
|
*
|
|
* |[
|
|
*
|
|
* static void
|
|
* on_animation_completed (ClutterAnimation *animation,
|
|
* ClutterActor *actor)
|
|
* {
|
|
* clutter_actor_hide (actor);
|
|
* }
|
|
*
|
|
* clutter_actor_animate (actor, CLUTTER_EASE_IN, 100,
|
|
* "opacity", 0,
|
|
* "signal::completed", on_animation_completed, actor,
|
|
* NULL);
|
|
* ]|
|
|
*
|
|
* The "signal::" modifier is the equivalent of using g_signal_connect();
|
|
* the "signal-after::" modifier is the equivalent of using
|
|
* g_signal_connect_after(); the "signal-swapped::" modifier is the equivalent
|
|
* of using g_signal_connect_swapped(). The clutter_actor_animate() function
|
|
* will not keep track of multiple connections to the same signal, so it is
|
|
* your responsability to avoid them when calling clutter_actor_animate()
|
|
* multiple times on the same actor.
|
|
*
|
|
* Calling this function on an actor that is already being animated
|
|
* will cause the current animation to change with the new final values,
|
|
* the new easing mode and the new duration - that is, this code:
|
|
*
|
|
* |[
|
|
* clutter_actor_animate (actor, CLUTTER_LINEAR, 250,
|
|
* "width", 100,
|
|
* "height", 100,
|
|
* NULL);
|
|
* clutter_actor_animate (actor, CLUTTER_EASE_IN_CUBIC, 500,
|
|
* "x", 100,
|
|
* "y", 100,
|
|
* "width", 200,
|
|
* NULL);
|
|
* ]|
|
|
*
|
|
* is the equivalent of:
|
|
*
|
|
* |[
|
|
* clutter_actor_animate (actor, CLUTTER_EASE_IN_CUBIC, 500,
|
|
* "x", 100,
|
|
* "y", 100,
|
|
* "width", 200,
|
|
* "height", 100,
|
|
* NULL);
|
|
* ]|
|
|
*
|
|
* <note>Unless the animation is looping, the #ClutterAnimation created by
|
|
* clutter_actor_animate() will become invalid as soon as it is
|
|
* complete.</note>
|
|
*
|
|
* Since the created #ClutterAnimation instance attached to @actor
|
|
* is guaranteed to be valid throughout the #ClutterAnimation::completed
|
|
* signal emission chain, you will not be able to create a new animation
|
|
* using clutter_actor_animate() on the same @actor from within the
|
|
* #ClutterAnimation::completed signal handler unless you use
|
|
* g_signal_connect_after() to connect the callback function, for instance:
|
|
*
|
|
* |[
|
|
* static void
|
|
* on_animation_completed (ClutterAnimation *animation,
|
|
* ClutterActor *actor)
|
|
* {
|
|
* clutter_actor_animate (actor, CLUTTER_EASE_OUT_CUBIC, 250,
|
|
* "x", 500,
|
|
* "y", 500,
|
|
* NULL);
|
|
* }
|
|
*
|
|
* ...
|
|
* animation = clutter_actor_animate (actor, CLUTTER_EASE_IN_CUBIC, 250,
|
|
* "x", 100,
|
|
* "y", 100,
|
|
* NULL);
|
|
* g_signal_connect (animation, "completed",
|
|
* G_CALLBACK (on_animation_completed),
|
|
* actor);
|
|
* ...
|
|
* ]|
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is
|
|
* owned by the #ClutterActor and should not be unreferenced with
|
|
* g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animate (ClutterActor *actor,
|
|
gulong mode,
|
|
guint duration,
|
|
const gchar *first_property_name,
|
|
...)
|
|
{
|
|
ClutterAnimation *animation;
|
|
va_list args;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (mode != CLUTTER_CUSTOM_MODE, NULL);
|
|
g_return_val_if_fail (duration > 0, NULL);
|
|
g_return_val_if_fail (first_property_name != NULL, NULL);
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_mode (animation, mode);
|
|
clutter_animation_set_duration (animation, duration);
|
|
|
|
va_start (args, first_property_name);
|
|
clutter_animation_setup_valist (animation, first_property_name, args);
|
|
va_end (args);
|
|
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animatev:
|
|
* @actor: a #ClutterActor
|
|
* @mode: an animation mode logical id
|
|
* @duration: duration of the animation, in milliseconds
|
|
* @n_properties: number of property names and values
|
|
* @properties: (array length=n_properties): a vector containing the
|
|
* property names to set
|
|
* @values: (array length=n_properies): a vector containing the
|
|
* property values to set
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite duration and a speed given by the @mode.
|
|
*
|
|
* This is the vector-based variant of clutter_actor_animate(), useful
|
|
* for language bindings.
|
|
*
|
|
* <warning>Unlike clutter_actor_animate(), this function will not
|
|
* allow you to specify "signal::" names and callbacks.</warning>
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is
|
|
* owned by the #ClutterActor and should not be unreferenced with
|
|
* g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animatev (ClutterActor *actor,
|
|
gulong mode,
|
|
guint duration,
|
|
gint n_properties,
|
|
const gchar * const properties[],
|
|
const GValue *values)
|
|
{
|
|
ClutterAnimation *animation;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (mode != CLUTTER_CUSTOM_MODE, NULL);
|
|
g_return_val_if_fail (duration > 0, NULL);
|
|
g_return_val_if_fail (properties != NULL, NULL);
|
|
g_return_val_if_fail (values != NULL, NULL);
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_mode (animation, mode);
|
|
clutter_animation_set_duration (animation, duration);
|
|
clutter_animation_setupv (animation, n_properties, properties, values);
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animate_with_timelinev:
|
|
* @actor: a #ClutterActor
|
|
* @mode: an animation mode logical id
|
|
* @timeline: a #ClutterTimeline
|
|
* @n_properties: number of property names and values
|
|
* @properties: (array length=n_properties): a vector containing the
|
|
* property names to set
|
|
* @values: (array length=n_properies): a vector containing the
|
|
* property values to set
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite duration given by @timeline and a speed given by the @mode.
|
|
*
|
|
* See clutter_actor_animate() for further details.
|
|
*
|
|
* This function is useful if you want to use an existing timeline
|
|
* to animate @actor.
|
|
*
|
|
* This is the vector-based variant of clutter_actor_animate_with_timeline(),
|
|
* useful for language bindings.
|
|
*
|
|
* <warning>Unlike clutter_actor_animate_with_timeline(), this function
|
|
* will not allow you to specify "signal::" names and callbacks.</warning>
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is
|
|
* owned by the #ClutterActor and should not be unreferenced with
|
|
* g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animate_with_timelinev (ClutterActor *actor,
|
|
gulong mode,
|
|
ClutterTimeline *timeline,
|
|
gint n_properties,
|
|
const gchar * const properties[],
|
|
const GValue *values)
|
|
{
|
|
ClutterAnimation *animation;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (CLUTTER_IS_TIMELINE (timeline), NULL);
|
|
g_return_val_if_fail (properties != NULL, NULL);
|
|
g_return_val_if_fail (values != NULL, NULL);
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_mode (animation, mode);
|
|
clutter_animation_set_timeline (animation, timeline);
|
|
clutter_animation_setupv (animation, n_properties, properties, values);
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_animate_with_alphav:
|
|
* @actor: a #ClutterActor
|
|
* @alpha: a #ClutterAlpha
|
|
* @n_properties: number of property names and values
|
|
* @properties: (array length=n_properties): a vector containing the
|
|
* property names to set
|
|
* @values: (array length=n_properies): a vector containing the
|
|
* property values to set
|
|
*
|
|
* Animates the given list of properties of @actor between the current
|
|
* value for each property and a new final value. The animation has a
|
|
* definite behaviour given by the passed @alpha.
|
|
*
|
|
* See clutter_actor_animate() for further details.
|
|
*
|
|
* This function is useful if you want to use an existing #ClutterAlpha
|
|
* to animate @actor.
|
|
*
|
|
* This is the vector-based variant of clutter_actor_animate_with_alpha(),
|
|
* useful for language bindings.
|
|
*
|
|
* <warning>Unlike clutter_actor_animate_with_alpha(), this function will
|
|
* not allow you to specify "signal::" names and callbacks.</warning>
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation object. The object is owned by the
|
|
* #ClutterActor and should not be unreferenced with g_object_unref()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_animate_with_alphav (ClutterActor *actor,
|
|
ClutterAlpha *alpha,
|
|
gint n_properties,
|
|
const gchar * const properties[],
|
|
const GValue *values)
|
|
{
|
|
ClutterAnimation *animation;
|
|
ClutterTimeline *timeline;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
g_return_val_if_fail (CLUTTER_IS_ALPHA (alpha), NULL);
|
|
g_return_val_if_fail (properties != NULL, NULL);
|
|
g_return_val_if_fail (values != NULL, NULL);
|
|
|
|
timeline = clutter_alpha_get_timeline (alpha);
|
|
if (timeline == NULL)
|
|
{
|
|
g_warning ("The passed ClutterAlpha does not have an "
|
|
"associated ClutterTimeline.");
|
|
return NULL;
|
|
}
|
|
|
|
animation = animation_create_for_actor (actor);
|
|
clutter_animation_set_alpha (animation, alpha);
|
|
clutter_animation_setupv (animation, n_properties, properties, values);
|
|
clutter_animation_start (animation);
|
|
|
|
return animation;
|
|
}
|
|
|
|
/**
|
|
* clutter_actor_get_animation:
|
|
* @actor: a #ClutterActor
|
|
*
|
|
* Retrieves the #ClutterAnimation used by @actor, if clutter_actor_animate()
|
|
* has been called on @actor.
|
|
*
|
|
* Return value: (transfer none): a #ClutterAnimation, or %NULL
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
ClutterAnimation *
|
|
clutter_actor_get_animation (ClutterActor *actor)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), NULL);
|
|
|
|
return g_object_get_qdata (G_OBJECT (actor), quark_object_animation);
|
|
}
|