/*  This file is part of the KDE project.+
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Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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+
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This library is free software: you can redistribute it and/or modify+
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it under the terms of the GNU Lesser General Public License as published by+
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the Free Software Foundation, either version 2.1 or 3 of the License.+
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+
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This library is distributed in the hope that it will be useful,+
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but WITHOUT ANY WARRANTY; without even the implied warranty of+
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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GNU Lesser General Public License for more details.+
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+
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You should have received a copy of the GNU Lesser General Public License+
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along with this library.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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+
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#ifndef PHONON_VOLUMEEFFECT_H+
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#define PHONON_VOLUMEEFFECT_H+
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+
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#include "effect.h"+
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#include <phonon/volumefaderinterface.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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#ifndef QT_NO_PHONON_VOLUMEFADEREFFECT+
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+
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namespace Phonon+
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{+
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    namespace DS9+
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    {+
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        class VolumeEffectFilter;+
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        class VolumeEffect : public Effect, public Phonon::VolumeFaderInterface+
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        {+
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            Q_OBJECT+
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                Q_INTERFACES(Phonon::VolumeFaderInterface)+
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        public:+
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            VolumeEffect(QObject *parent);+
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+
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            //reimplementation+
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            virtual float volume() const;+
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            virtual void setVolume(float);+
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            virtual Phonon::VolumeFaderEffect::FadeCurve fadeCurve() const;+
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            virtual void setFadeCurve(Phonon::VolumeFaderEffect::FadeCurve);+
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            virtual void fadeTo(float, int);+
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+
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        private:+
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            float m_volume;+
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+
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            //paramaters used to fade+
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            Phonon::VolumeFaderEffect::FadeCurve m_fadeCurve;+
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+
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            bool m_fading; //determines if we should be fading.+
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            float m_initialVolume;  +
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            float m_targetVolume;+
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            int m_fadeDuration;+
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            int m_fadeSamplePosition;+
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            qreal (*m_fadeCurveFn)(const qreal, const qreal, const qreal);+
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+
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            //allow the filter to get access to that+
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            friend class VolumeEffectFilter;+
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+
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        };+
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    }+
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}+
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+
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#endif //QT_NO_PHONON_VOLUMEFADEREFFECT+
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+
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QT_END_NAMESPACE+
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+
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#endif+
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