Collections: Operator to duplicate a collection

When duplicating a layer collection directly linked to the view layer we copy
the collection and link it.

For all the not directly linked layer collectionns, we try to sync the layer
collection flags, overrides, ...

Also we make sure the new collection is right after the original collection.

We also expose this in RNA, via collection.duplicate().

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_layer.h b/source/blender/blenkernel/BKE_layer.h
index f098a7e7468..633cb2c6044 100644
--- a/source/blender/blenkernel/BKE_layer.h
+++ b/source/blender/blenkernel/BKE_layer.h
@@ -78,11 +78,18 @@ struct Base *BKE_view_layer_base_find(struct ViewLayer *view_layer, struct Objec
 void BKE_view_layer_base_deselect_all(struct ViewLayer *view_layer);
 void BKE_view_layer_base_select(struct ViewLayer *view_layer, struct Base *selbase);
 
+void BKE_layer_collection_sync_flags(
+        struct ID *owner_id,
+        struct SceneCollection *scene_collection_dst,
+        struct SceneCollection *scene_collection_src);
+
 void BKE_view_layer_copy_data(
         struct ViewLayer *view_layer_dst, struct ViewLayer *view_layer_src,
         struct SceneCollection *mc_dst, struct SceneCollection *mc_src,
         const int flag);
 
+struct LayerCollection *BKE_layer_collection_duplicate(struct ID *owner_id, struct LayerCollection *layer_collection);
+
 void BKE_layer_collection_free(struct ViewLayer *view_layer, struct LayerCollection *lc);
 
 struct LayerCollection *BKE_layer_collection_get_active(struct ViewLayer *view_layer);