only queue an item redraw from Item::show() or Item::Hide() if the call changes the...

diff --git a/libs/canvas/item.cc b/libs/canvas/item.cc
index 8a8acce086052ab414bef231a22a2298ced0c2e1..418382da17c27c88a1deae3edf914dfad6fb3f09 100644 (file)
--- a/libs/canvas/item.cc
+++ b/libs/canvas/item.cc
@@ -240,15 +240,19 @@ Item::lower_to_bottom ()
 void
 Item::hide ()
 {
-       _visible = false;
-       _canvas->item_shown_or_hidden (this);
+       if (_visible) {
+               _visible = false;
+               _canvas->item_shown_or_hidden (this);
+       }
 }
 
 void
 Item::show ()
 {
-       _visible = true;
-       _canvas->item_shown_or_hidden (this);
+       if (!_visible) {
+               _visible = true;
+               _canvas->item_shown_or_hidden (this);
+       }
 }
 
 Duple