Add Extras Dropdown Menu to Constraints

Add Apply Constraint, Duplicate Constraint, and Copy To Selected
operators, and include them in a menu similar to the menu for modifiers.
The shortcuts in the extras menu are also matched to modifiers.

All the here added operators are intended to work exactly like the
analogous ones for modifiers. That means the apply operator should apply
a constraint as if it was first in the list, just like modifiers do. I
have added the same warning message as for modifiers when that happens.

The decision to use this approach of appling the constraint as if it was
first, was made for consistency with modifiers. People are already used
to how it works there. Is also provides more intricate control over the
applied transforms, then just applying all constraints up to that one.
Apply all constraints is already kinda implemented in Bake Animation.

Reviewed By: HooglyBoogly, sybren, #user_interface

Differential Revision: https://developer.blender.org/D10914

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/editors/object/object_intern.h b/source/blender/editors/object/object_intern.h
index 6299fdcc7f7..10e016738d0 100644
--- a/source/blender/editors/object/object_intern.h
+++ b/source/blender/editors/object/object_intern.h
@@ -226,6 +226,9 @@ void POSE_OT_ik_add(struct wmOperatorType *ot);
 void POSE_OT_ik_clear(struct wmOperatorType *ot);
 
 void CONSTRAINT_OT_delete(struct wmOperatorType *ot);
+void CONSTRAINT_OT_apply(struct wmOperatorType *ot);
+void CONSTRAINT_OT_copy(struct wmOperatorType *ot);
+void CONSTRAINT_OT_copy_to_selected(struct wmOperatorType *ot);
 
 void CONSTRAINT_OT_move_up(struct wmOperatorType *ot);
 void CONSTRAINT_OT_move_to_index(struct wmOperatorType *ot);