From 7b24be86a2a9dfaa86d3c338769f4f5e55dacf24 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Thu, 2 Jan 2014 16:49:42 -0500
Subject: [PATCH] make raise_to_top() and lower_to_bottom() no-ops if item is
 already in the right place

---
 libs/canvas/group.cc | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libs/canvas/group.cc b/libs/canvas/group.cc
index bcea16dd76..1341408dac 100644
--- a/libs/canvas/group.cc
+++ b/libs/canvas/group.cc
@@ -233,6 +233,12 @@ Group::clear (bool with_delete)
 void
 Group::raise_child_to_top (Item* i)
 {
+	if (!_items.empty()) {
+		if (_items.front() == i) {
+			return;
+		}
+	}
+
 	_items.remove (i);
 	_items.push_back (i);
 	invalidate_lut ();
@@ -259,6 +265,11 @@ Group::raise_child (Item* i, int levels)
 void
 Group::lower_child_to_bottom (Item* i)
 {
+	if (!_items.empty()) {
+		if (_items.back() == i) {
+			return;
+		}
+	}
 	_items.remove (i);
 	_items.push_front (i);
 	invalidate_lut ();