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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 <glaurent@telegraph-road.org>,
+ Chris Cannam <cannam@all-day-breakfast.com>,
+ Richard Bown <richard.bown@ferventsoftware.com>
+
+ 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.
+*/
+
+#ifndef _RG_CHANGEVELOCITYCOMMAND_H_
+#define _RG_CHANGEVELOCITYCOMMAND_H_
+
+#include "document/BasicSelectionCommand.h"
+#include <qstring.h>
+#include <klocale.h>
+
+
+
+
+namespace Rosegarden
+{
+
+class EventSelection;
+
+
+/** Add or subtract a constant from all event velocities.
+ Use SelectionPropertyCommand if you want to do something more
+ creative. */
+class ChangeVelocityCommand : public BasicSelectionCommand
+{
+public:
+ ChangeVelocityCommand(int delta, EventSelection &selection) :
+ BasicSelectionCommand(getGlobalName(delta), selection, true),
+ m_selection(&selection), m_delta(delta) { }
+
+ static QString getGlobalName(int delta = 0) {
+ if (delta > 0) return i18n("&Increase Velocity");
+ else return i18n("&Reduce Velocity");
+ }
+
+protected:
+ virtual void modifySegment();
+
+private:
+ EventSelection *m_selection;// only used on 1st execute (cf bruteForceRedo)
+ int m_delta;
+};
+
+
+}
+
+#endif