From 936f7a3b844813efe6dec8e75117c1e9cf5ab258 Mon Sep 17 00:00:00 2001
From: Enrico Turri <enricoturri@seznam.cz>
Date: Thu, 4 Apr 2019 09:35:13 +0200
Subject: [PATCH] Select newly added parts/volumes from current selected
 instance when adding from 3D scene's context menu

---
 src/slic3r/GUI/GUI_ObjectList.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index c0dcc659d..c725fae43 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -2051,12 +2051,15 @@ void ObjectList::update_selections_on_canvas()
         }
     };
 
+    // stores current instance idx before to clear the selection
+    int instance_idx = selection.get_instance_idx();
+
     if (sel_cnt == 1) {
         wxDataViewItem item = GetSelection();
         if (m_objects_model->GetItemType(item) & (itSettings|itInstanceRoot))
             add_to_selection(m_objects_model->GetParent(item), selection, -1, true);
         else
-            add_to_selection(item, selection, -1, true);
+            add_to_selection(item, selection, instance_idx, true);
 
         wxGetApp().plater()->canvas3D()->update_gizmos_on_off_state();
         return;
@@ -2065,8 +2068,6 @@ void ObjectList::update_selections_on_canvas()
     wxDataViewItemArray sels;
     GetSelections(sels);
 
-    // stores current instance idx before to clear the selection
-    int instance_idx = selection.get_instance_idx();
     selection.clear();
     for (auto item: sels)
         add_to_selection(item, selection, instance_idx, false);