/*
* master_clock_is_running:
* @master_clock: a #ClutterMasterClock
*
* Checks if we should currently be advancing timelines or redrawing
* stages.
*
* Return value: %TRUE if the #ClutterMasterClock has at least
* one running timeline
*/
static gboolean
master_clock_is_running (ClutterMasterClockDefault *master_clock)
{
ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
const GSList *stages, *l;
stages = clutter_stage_manager_peek_stages (stage_manager);
if (master_clock->paused)
return FALSE;
if (master_clock->timelines)
return TRUE;
for (l = stages; l; l = l->next)
{
if (clutter_actor_is_mapped (l->data) &&
(_clutter_stage_has_queued_events (l->data) ||
_clutter_stage_needs_update (l->data)))
return TRUE;
}
if (master_clock->ensure_next_iteration)
{
master_clock->ensure_next_iteration = FALSE;
return TRUE;
}
return FALSE;
}
static void
master_clock_reschedule_stage_updates (ClutterMasterClockDefault *master_clock,
GSList *stages)
{
const GSList *l;
for (l = stages; l != NULL; l = l->next)
{
/* Clear the old update time */
_clutter_stage_clear_update_time (l->data);
/* And if there is still work to be done, schedule a new one */
if (master_clock->timelines ||
_clutter_stage_has_queued_events (l->data) ||
_clutter_stage_needs_update (l->data))
_clutter_stage_schedule_update (l->data);
}
}
/*
* master_clock_is_running:
* @master_clock: a #ClutterMasterClock
*
* Checks if we should currently be advancing timelines or redrawing
* stages.
*
* Return value: %TRUE if the #ClutterMasterClock has at least
* one running timeline
*/
static gboolean
master_clock_is_running (ClutterMasterClock *master_clock)
{
ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
const GSList *stages, *l;
gboolean stage_free = FALSE;
stages = clutter_stage_manager_peek_stages (stage_manager);
/* If all of the stages are busy waiting for a swap-buffers to complete
* then we stop the master clock... */
for (l = stages; l != NULL; l = l->next)
{
if (_clutter_stage_get_pending_swaps (l->data) == 0)
{
stage_free = TRUE;
break;
}
}
if (!stage_free)
return FALSE;
if (master_clock->timelines)
return TRUE;
for (l = stages; l; l = l->next)
{
if (_clutter_stage_has_queued_events (l->data) ||
_clutter_stage_needs_update (l->data))
return TRUE;
}
if (master_clock->ensure_next_iteration)
{
master_clock->ensure_next_iteration = FALSE;
return TRUE;
}
return FALSE;
}
