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timeline: Rework the append_layer method

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ges_timeline_append_layer now creates a new layer, adds it to the timeline
and returns it

This code has not been released yet so we can break this API.
This commit is contained in:
Thibault Saunier 2012-01-22 23:03:22 -03:00
parent 4a881a43d9
commit 7e7059d37d
2 changed files with 12 additions and 11 deletions
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21
ges/ges-timeline.c
View file

@ -770,26 +770,27 @@ layer_object_removed_cb (GESTimelineLayer * layer, GESTimelineObject * object,
/**
* ges_timeline_append_layer:
* @timeline: a #GESTimeline
* @layer: the #GESTimelineLayer to add
*
* Convenience method to append @layer to @timeline which means that the
* priority of @layer is changed to correspond to the last layer of @timeline.
* The reference to the @layer will be stolen by @timeline.
* Append a newly creater #GESTimelineLayer to @timeline
* Note that you do not own any reference to the returned layer.
*
* Returns: TRUE if the layer was properly added, else FALSE.
* Returns: (transfer none): The newly created #GESTimelineLayer, or the last (empty)
* #GESTimelineLayer of @timeline.
*/
gboolean
ges_timeline_append_layer (GESTimeline * timeline, GESTimelineLayer * layer)
GESTimelineLayer *
ges_timeline_append_layer (GESTimeline * timeline)
{
guint32 priority;
GESTimelinePrivate *priv = timeline->priv;
GESTimelineLayer *layer;
GST_DEBUG ("Appending layer to layer:%p, timeline:%p", timeline, layer);
layer = ges_timeline_layer_new ();
priority = g_list_length (priv->layers);
ges_timeline_layer_set_priority (layer, priority);
return ges_timeline_add_layer (timeline, layer);
ges_timeline_add_layer (timeline, layer);
return layer;
}
/**

2
ges/ges-timeline.h
View file

@ -89,7 +89,7 @@ gboolean ges_timeline_load_from_uri (GESTimeline *timeline, const gchar *uri);
gboolean ges_timeline_save_to_uri (GESTimeline *timeline, const gchar *uri);
gboolean ges_timeline_add_layer (GESTimeline *timeline, GESTimelineLayer *layer);
gboolean ges_timeline_append_layer (GESTimeline * timeline, GESTimelineLayer * layer);
GESTimelineLayer * ges_timeline_append_layer (GESTimeline * timeline);
gboolean ges_timeline_remove_layer (GESTimeline *timeline, GESTimelineLayer *layer);
GList* ges_timeline_get_layers (GESTimeline *timeline);