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57 lines
1.8 KiB
57 lines
1.8 KiB
15 years ago
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RG_EDITVIEWTIMESIGNOTIFIER_H_
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#define _RG_EDITVIEWTIMESIGNOTIFIER_H_
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namespace Rosegarden {
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class EditViewTimeSigNotifier : public Rosegarden::CompositionObserver
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{
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public:
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EditViewTimeSigNotifier(RosegardenGUIDoc *doc) :
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m_composition(&doc->getComposition()),
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m_timeSigChanged(false) {
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m_composition->addObserver(this);
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}
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virtual ~EditViewTimeSigNotifier() {
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if (!isCompositionDeleted()) m_composition->removeObserver(this);
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}
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virtual void timeSignatureChanged(const Rosegarden::Composition *c) {
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if (c == m_composition) m_timeSigChanged = true;
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}
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bool hasTimeSigChanged() const { return m_timeSigChanged; }
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void reset() { m_timeSigChanged = false; }
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protected:
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Rosegarden::Composition *m_composition;
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bool m_timeSigChanged;
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};
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}
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#endif /*EDITVIEWTIMESIGNOTIFIER_H_*/
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