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timeline: Make the update property a GObject property

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API: timeline::update property
This commit is contained in:
Thibault Saunier 2012-05-18 13:16:50 -04:00
parent 4c79afcbe4
commit c199c24507
1 changed files with 53 additions and 11 deletions
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64
ges/ges-timeline.c
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@ -147,6 +147,7 @@ enum
PROP_0,
PROP_DURATION,
PROP_SNAPPING_DISTANCE,
PROP_UPDATE,
PROP_LAST
};
@ -177,6 +178,26 @@ static void
discoverer_discovered_cb (GstDiscoverer * discoverer,
GstDiscovererInfo * info, GError * err, GESTimeline * timeline);
/* Internal methods */
static gboolean
ges_timeline_enable_update_internal (GESTimeline * timeline, gboolean enabled)
{
GList *tmp;
gboolean res = TRUE;
GST_DEBUG_OBJECT (timeline, "%s updates", enabled ? "Enabling" : "Disabling");
for (tmp = timeline->priv->tracks; tmp; tmp = tmp->next) {
if (!ges_track_enable_update (((TrackPrivate *) tmp->data)->track, enabled))
res = FALSE;
}
/* Make sure we reset the context */
timeline->priv->movecontext.needs_move_ctx = TRUE;
return res;
}
/* GObject Standard vmethods*/
static void
ges_timeline_get_property (GObject * object, guint property_id,
@ -193,6 +214,9 @@ ges_timeline_get_property (GObject * object, guint property_id,
case PROP_SNAPPING_DISTANCE:
g_value_set_uint64 (value, timeline->priv->snapping_distance);
break;
case PROP_UPDATE:
g_value_set_boolean (value, ges_timeline_is_updating (timeline));
break;
}
}
@ -206,6 +230,10 @@ ges_timeline_set_property (GObject * object, guint property_id,
case PROP_SNAPPING_DISTANCE:
timeline->priv->snapping_distance = g_value_get_uint64 (value);
break;
case PROP_UPDATE:
ges_timeline_enable_update_internal (timeline,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -298,6 +326,27 @@ ges_timeline_class_init (GESTimelineClass * klass)
g_object_class_install_property (object_class, PROP_SNAPPING_DISTANCE,
properties[PROP_SNAPPING_DISTANCE]);
/**
* GESTimeline:update:
*
* If %TRUE, then all modifications to objects within the timeline will
* cause a internal pipeline update (if required).
* If %FALSE, then only the timeline start/duration/stop properties
* will be updated, and the internal pipeline will only be updated when the
* property is set back to %TRUE.
*
* It is recommended to temporarily set this property to %FALSE before doing
* more than one modification in the timeline (like adding or moving
* several objects at once) in order to speed up the process, and then setting
* back the property to %TRUE when done.
*/
properties[PROP_UPDATE] = g_param_spec_boolean ("update", "Update",
"Update the internal pipeline on every modification", TRUE,
G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_UPDATE,
properties[PROP_UPDATE]);
/**
* GESTimeline::track-added
* @timeline: the #GESTimeline
@ -2400,20 +2449,13 @@ ges_timeline_is_updating (GESTimeline * timeline)
gboolean
ges_timeline_enable_update (GESTimeline * timeline, gboolean enabled)
{
GList *tmp;
gboolean res = TRUE;
if (ges_timeline_enable_update_internal (timeline, enabled)) {
g_object_notify_by_pspec (G_OBJECT (timeline), properties[PROP_UPDATE]);
GST_DEBUG_OBJECT (timeline, "%s updates", enabled ? "Enabling" : "Disabling");
for (tmp = timeline->priv->tracks; tmp; tmp = tmp->next) {
if (!ges_track_enable_update (((TrackPrivate *) tmp->data)->track, enabled))
res = FALSE;
return TRUE;
}
/* Make sure we reset the context */
timeline->priv->movecontext.needs_move_ctx = TRUE;
return res;
return FALSE;
}
/**