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diff --git a/src/commands/segment/SetTriggerSegmentBasePitchCommand.cpp b/src/commands/segment/SetTriggerSegmentBasePitchCommand.cpp
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+++ b/src/commands/segment/SetTriggerSegmentBasePitchCommand.cpp
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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+ 
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+ 
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+ 
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+ 
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+
+#include "SetTriggerSegmentBasePitchCommand.h"
+
+#include <klocale.h>
+#include "base/Composition.h"
+#include "base/TriggerSegment.h"
+
+
+namespace Rosegarden
+{
+
+SetTriggerSegmentBasePitchCommand::SetTriggerSegmentBasePitchCommand(Composition *composition,
+        TriggerSegmentId id,
+        int newPitch) :
+        KNamedCommand(i18n("Set Base Pitch")),
+        m_composition(composition),
+        m_id(id),
+        m_newPitch(newPitch),
+        m_oldPitch( -1)
+{
+    // nothing
+}
+
+SetTriggerSegmentBasePitchCommand::~SetTriggerSegmentBasePitchCommand()
+{
+    // nothing
+}
+
+void
+SetTriggerSegmentBasePitchCommand::execute()
+{
+    TriggerSegmentRec *rec = m_composition->getTriggerSegmentRec(m_id);
+    if (!rec)
+        return ;
+    if (m_oldPitch == -1) {
+        m_oldPitch = rec->getBasePitch();
+    }
+    rec->setBasePitch(m_newPitch);
+}
+
+void
+SetTriggerSegmentBasePitchCommand::unexecute()
+{
+    TriggerSegmentRec *rec = m_composition->getTriggerSegmentRec(m_id);
+    if (!rec)
+        return ;
+    rec->setBasePitch(m_oldPitch);
+}
+
+}