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Simplify timeout list handling for the master clock

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Instead of keeping a list of all timelines, and connecting to
signals and weak notifies, simply keep a list of running timelines;
this greatly simplifies both the book-keeping, and also determining
if there are any running timelines.

http://bugzilla.openedhand.com/show_bug.cgi?id=1637

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
This commit is contained in:
Owen W. Taylor 2009-06-06 17:44:40 -04:00 committed by Emmanuele Bassi
parent 3ab303b662
commit ebaec9798e
2 changed files with 48 additions and 108 deletions
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117
clutter/clutter-master-clock.c
View File

@ -77,9 +77,6 @@ struct _ClutterClockSource
ClutterMasterClock *master_clock;
};
static void on_timeline_started (ClutterTimeline *timeline,
ClutterMasterClock *master_clock);
static gboolean clutter_clock_prepare (GSource *source,
gint *timeout);
static gboolean clutter_clock_check (GSource *source);
@ -101,35 +98,20 @@ G_DEFINE_TYPE (ClutterMasterClock, clutter_master_clock, G_TYPE_OBJECT);
/*
* has_running_timeline:
* @master_clock: a #ClutterMasterClock
* @filter: a #ClutterTimeline or %NULL
*
* Checks if @master_clock has any running timeline; if @filter
* is not %NULL then the timeline will be filtered from the
* list of timelines held by @master_clock
* Checks if @master_clock has any running timeline.
*
* Return value: %TRUE if the #ClutterMasterClock has at least
* one running timeline
*/
static gboolean
has_running_timeline (ClutterMasterClock *master_clock,
ClutterTimeline *filter)
has_running_timeline (ClutterMasterClock *master_clock)
{
GSList *l;
ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
const GSList *stages, *l;
if (master_clock->timelines == NULL)
return FALSE;
for (l = master_clock->timelines; l != NULL; l = l->next)
{
/* if we get a timeline then we should filter it
* from the list of timelines we want to check
*/
if (filter != NULL && filter == l->data)
continue;
if (clutter_timeline_is_playing (l->data))
return TRUE;
}
if (master_clock->timelines)
return TRUE;
return FALSE;
}
@ -167,7 +149,7 @@ clutter_clock_prepare (GSource *source,
/* just like an idle source, we are ready if nothing else is */
*timeout = -1;
retval = has_running_timeline (master_clock, NULL);
retval = has_running_timeline (master_clock);
return retval;
}
@ -179,7 +161,7 @@ clutter_clock_check (GSource *source)
ClutterMasterClock *master_clock = clock_source->master_clock;
gboolean retval;
retval = has_running_timeline (master_clock, NULL);
retval = has_running_timeline (master_clock);
return retval;
}
@ -206,37 +188,10 @@ clutter_clock_dispatch (GSource *source,
return TRUE;
}
static void
timeline_weak_ref (gpointer data,
GObject *object_pointer)
{
ClutterMasterClock *master_clock = data;
master_clock->timelines =
g_slist_remove (master_clock->timelines, object_pointer);
if (master_clock->timelines == NULL)
master_clock->prev_tick.tv_sec = 0;
}
static void
clutter_master_clock_finalize (GObject *gobject)
{
ClutterMasterClock *master_clock = CLUTTER_MASTER_CLOCK (gobject);
GSList *l;
for (l = master_clock->timelines; l != NULL; l = l->next)
{
ClutterTimeline *timeline = l->data;
g_object_weak_unref (G_OBJECT (timeline),
timeline_weak_ref,
master_clock);
g_signal_handlers_disconnect_by_func (timeline,
G_CALLBACK (on_timeline_started),
master_clock);
}
g_slist_free (master_clock->timelines);
@ -284,49 +239,33 @@ _clutter_master_clock_get_default (void)
return default_clock;
}
static void
on_timeline_started (ClutterTimeline *timeline,
ClutterMasterClock *master_clock)
{
/* we want to reset the prev_tick if this is the first
* timeline; since timeline is playing we need to filter
* it out, otherwise has_running_timeline() will return
* TRUE and prev_tick will not be unset
*/
if (!has_running_timeline (master_clock, timeline))
master_clock->prev_tick.tv_sec = 0;
}
/*
* _clutter_master_clock_add_timeline:
* @master_clock: a #ClutterMasterClock
* @timeline: a #ClutterTimeline
*
* Adds @timeline to the list of timelines held by the master
* clock. This function should be called during the instance
* creation phase of the timeline.
* Adds @timeline to the list of playing timelines held by the master
* clock.
*/
void
_clutter_master_clock_add_timeline (ClutterMasterClock *master_clock,
ClutterTimeline *timeline)
{
gboolean is_first = FALSE;
gboolean is_first;
if (g_slist_find (master_clock->timelines, timeline))
return;
is_first = (master_clock->timelines == NULL) ? TRUE : FALSE;
is_first = master_clock->timelines == NULL;
master_clock->timelines = g_slist_prepend (master_clock->timelines,
timeline);
g_object_weak_ref (G_OBJECT (timeline),
timeline_weak_ref,
master_clock);
g_signal_connect (timeline, "started",
G_CALLBACK (on_timeline_started),
master_clock);
if (is_first)
{
/* Start timing from scratch */
master_clock->prev_tick.tv_sec = 0;
}
}
/*
@ -334,33 +273,15 @@ _clutter_master_clock_add_timeline (ClutterMasterClock *master_clock,
* @master_clock: a #ClutterMasterClock
* @timeline: a #ClutterTimeline
*
* Removes @timeline from the list of timelines held by the
* master clock. This function should be called during the
* #ClutterTimeline finalization.
* Removes @timeline from the list of playing timelines held by the
* master clock.
*/
void
_clutter_master_clock_remove_timeline (ClutterMasterClock *master_clock,
ClutterTimeline *timeline)
{
if (!g_slist_find (master_clock->timelines, timeline))
return;
master_clock->timelines = g_slist_remove (master_clock->timelines,
timeline);
g_object_weak_unref (G_OBJECT (timeline),
timeline_weak_ref,
master_clock);
g_signal_handlers_disconnect_by_func (timeline,
G_CALLBACK (on_timeline_started),
master_clock);
/* last timeline: unset the prev_tick so that we can start
* from scratch when we add a new timeline
*/
if (master_clock->timelines == NULL)
master_clock->prev_tick.tv_sec = 0;
}
/*

39
clutter/clutter-timeline.c
View File

@ -204,8 +204,11 @@ clutter_timeline_finalize (GObject *object)
if (priv->markers_by_name)
g_hash_table_destroy (priv->markers_by_name);
master_clock = _clutter_master_clock_get_default ();
_clutter_master_clock_remove_timeline (master_clock, self);
if (priv->is_playing)
{
master_clock = _clutter_master_clock_get_default ();
_clutter_master_clock_remove_timeline (master_clock, self);
}
G_OBJECT_CLASS (clutter_timeline_parent_class)->finalize (object);
}
@ -412,7 +415,6 @@ static void
clutter_timeline_init (ClutterTimeline *self)
{
ClutterTimelinePrivate *priv;
ClutterMasterClock *master_clock;
self->priv = priv =
G_TYPE_INSTANCE_GET_PRIVATE (self, CLUTTER_TYPE_TIMELINE,
@ -421,9 +423,6 @@ clutter_timeline_init (ClutterTimeline *self)
priv->duration = 0;
priv->delay = 0;
priv->elapsed_time = 0;
master_clock = _clutter_master_clock_get_default ();
_clutter_master_clock_add_timeline (master_clock, self);
}
static void
@ -475,6 +474,26 @@ is_complete (ClutterTimeline *timeline)
: priv->elapsed_time <= 0);
}
static void
set_is_playing (ClutterTimeline *timeline,
gboolean is_playing)
{
ClutterTimelinePrivate *priv = timeline->priv;
ClutterMasterClock *master_clock;
is_playing = is_playing != FALSE;
if (is_playing == priv->is_playing)
return;
priv->is_playing = is_playing;
master_clock = _clutter_master_clock_get_default ();
if (priv->is_playing)
_clutter_master_clock_add_timeline (master_clock, timeline);
else
_clutter_master_clock_remove_timeline (master_clock, timeline);
}
static gboolean
clutter_timeline_advance_internal (ClutterTimeline *timeline)
{
@ -561,7 +580,7 @@ clutter_timeline_advance_internal (ClutterTimeline *timeline)
* XXX Perhaps we should remove this earlier, and regardless
* of priv->loop. Are we limiting the things that could be done in
* the above new-frame signal handler */
priv->is_playing = FALSE;
set_is_playing (timeline, FALSE);
}
g_signal_emit (timeline, timeline_signals[COMPLETED], 0);
@ -613,7 +632,7 @@ delay_timeout_func (gpointer data)
priv->delay_id = 0;
priv->msecs_delta = 0;
priv->is_playing = TRUE;
set_is_playing (timeline, TRUE);
g_signal_emit (timeline, timeline_signals[STARTED], 0);
@ -648,7 +667,7 @@ clutter_timeline_start (ClutterTimeline *timeline)
else
{
priv->msecs_delta = 0;
priv->is_playing = TRUE;
set_is_playing (timeline, TRUE);
g_signal_emit (timeline, timeline_signals[STARTED], 0);
}
@ -679,7 +698,7 @@ clutter_timeline_pause (ClutterTimeline *timeline)
}
priv->msecs_delta = 0;
priv->is_playing = FALSE;
set_is_playing (timeline, FALSE);
g_signal_emit (timeline, timeline_signals[PAUSED], 0);
}