Fix T92099: No undo when moving viewport with camera locked to view

Supports undo step generation while navigating in locked camera view.
NDOF & track-pad navigation are not included for now.

Actions that uses smooth view can be supported but are outside
the scope of this change, includes undo push for:

- VIEW3D_OT_view_pan
- VIEW3D_OT_dolly
- VIEW3D_OT_fly
- VIEW3D_OT_move
- VIEW3D_OT_rotate
- VIEW3D_OT_walk
- VIEW3D_OT_zoom

Reviewed by: campbellbarton

Ref D15345

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/editors/space_view3d/view3d_navigate_walk.c b/source/blender/editors/space_view3d/view3d_navigate_walk.c
index f1e9ac22882..69deaab7ebe 100644
--- a/source/blender/editors/space_view3d/view3d_navigate_walk.c
+++ b/source/blender/editors/space_view3d/view3d_navigate_walk.c
@@ -1386,6 +1386,7 @@ static int walk_modal(bContext *C, wmOperator *op, const wmEvent *event)
   int exit_code;
   bool do_draw = false;
   WalkInfo *walk = op->customdata;
+  View3D *v3d = walk->v3d;
   RegionView3D *rv3d = walk->rv3d;
   Object *walk_object = ED_view3d_cameracontrol_object_get(walk->v3d_camera_control);
 
@@ -1412,6 +1413,9 @@ static int walk_modal(bContext *C, wmOperator *op, const wmEvent *event)
   if (exit_code != OPERATOR_RUNNING_MODAL) {
     do_draw = true;
   }
+  if (exit_code == OPERATOR_FINISHED) {
+    ED_view3d_camera_lock_undo_push(op->type->name, v3d, rv3d, C);
+  }
 
   if (do_draw) {
     if (rv3d->persp == RV3D_CAMOB) {