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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_EDITVIEWTIMESIGNOTIFIER_H_
#define _RG_EDITVIEWTIMESIGNOTIFIER_H_
namespace Rosegarden {
class EditViewTimeSigNotifier : public Rosegarden::CompositionObserver
{
public:
EditViewTimeSigNotifier(RosegardenGUIDoc *doc) :
m_composition(&doc->getComposition()),
m_timeSigChanged(false) {
m_composition->addObserver(this);
}
virtual ~EditViewTimeSigNotifier() {
if (!isCompositionDeleted()) m_composition->removeObserver(this);
}
virtual void timeSignatureChanged(const Rosegarden::Composition *c) {
if (c == m_composition) m_timeSigChanged = true;
}
bool hasTimeSigChanged() const { return m_timeSigChanged; }
void reset() { m_timeSigChanged = false; }
protected:
Rosegarden::Composition *m_composition;
bool m_timeSigChanged;
};
}
#endif /*EDITVIEWTIMESIGNOTIFIER_H_*/
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