UI: show gizmo while transforming

When interacting with translate/rotate/scale gizmo, show the gizmo while
it's in use. There are some exceptions to this, as showing all scale
gizmos while scaling causes the gizmos to become large & distracting so
in this case only the gizmo being dragged is shown.

Resolves T63743.

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index 3ff3117dafe..b28ae16c5a1 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -4583,6 +4583,20 @@ void WM_event_remove_area_handler(ListBase *handlers, void *area)
   }
 }
 
+wmOperator *WM_operator_find_modal_by_type(wmWindow *win, const wmOperatorType *ot)
+{
+  LISTBASE_FOREACH (wmEventHandler *, handler_base, &win->modalhandlers) {
+    if (handler_base->type != WM_HANDLER_TYPE_OP) {
+      continue;
+    }
+    wmEventHandler_Op *handler = (wmEventHandler_Op *)handler_base;
+    if (handler->op && handler->op->type == ot) {
+      return handler->op;
+    }
+  }
+  return NULL;
+}
+
 #if 0
 static void WM_event_remove_handler(ListBase *handlers, wmEventHandler *handler)
 {