Note Editor: Auto-offset nodes on insertion

Implements "Auto-offset" (called "insert offset" in code) feature for Node Editor, developed during and after LSOC :)
Idea and sponsoring by Sebastian König, blendFX, Mathias Eimann, Mikavaa, Knick Design

When you drop a node with at least one input and one output socket onto a an existing connection between two nodes, Auto-offset will, depending on the direction setting, automatically and animated move the left or right and all of its following nodes away to make room for the new node.
The direction for offsetting can be toggled while you are moving the node by pressing „T“.

The auto-offset is enabled by default but can be disabled in the header of the node-editor. The offset margin can be changed in the editing section of the User Preferences.

Thanks a lot to the sponsors, and especially to Sebastian who helped *a lot* with this. That's how users can help developing Blender!

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/node_intern.h b/source/blender/editors/space_node/node_intern.h
index 6b1d947bfca..b08c9b10eeb 100644
--- a/source/blender/editors/space_node/node_intern.h
+++ b/source/blender/editors/space_node/node_intern.h
@@ -167,6 +167,8 @@ void NODE_OT_detach(struct wmOperatorType *ot);
 
 void NODE_OT_link_viewer(struct wmOperatorType *ot);
 
+void NODE_OT_insert_offset(wmOperatorType *ot);
+
 /* node_edit.c */
 void snode_notify(struct bContext *C, struct SpaceNode *snode);
 void snode_dag_update(struct bContext *C, struct SpaceNode *snode);