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/* This file is part of the KDE project |
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Copyright (C) 2006 Matthias Kretz <kretz@kde.org> |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) version 3, or any |
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later version accepted by the membership of KDE e.V. (or its |
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successor approved by the membership of KDE e.V.), Nokia Corporation |
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(or its successors, if any) and the KDE Free Qt Foundation, which shall |
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act as a proxy defined in Section 6 of version 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 GNU |
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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 |
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License along with this library. If not, see <http://www.gnu.org/licenses/>. |
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|
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*/ |
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|
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#include "volumefadereffect.h" |
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#include "volumefadereffect_p.h" |
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#include "volumefaderinterface.h" |
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#include "factory_p.h" |
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|
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#include <QtCore/qmath.h> |
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|
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#define PHONON_CLASSNAME VolumeFaderEffect |
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#define PHONON_INTERFACENAME VolumeFaderInterface |
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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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PHONON_HEIR_IMPL(Effect) |
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|
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PHONON_INTERFACE_GETTER(float, volume, d->currentVolume) |
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PHONON_INTERFACE_SETTER(setVolume, currentVolume, float) |
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PHONON_INTERFACE_GETTER(Phonon::VolumeFaderEffect::FadeCurve, fadeCurve, d->fadeCurve) |
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PHONON_INTERFACE_SETTER(setFadeCurve, fadeCurve, Phonon::VolumeFaderEffect::FadeCurve) |
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|
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#ifndef PHONON_LOG10OVER20 |
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#define PHONON_LOG10OVER20 |
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static const double log10over20 = 0.1151292546497022842; // ln(10) / 20 |
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#endif // PHONON_LOG10OVER20 |
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|
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double VolumeFaderEffect::volumeDecibel() const |
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{ |
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return log(volume()) / log10over20; |
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} |
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|
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void VolumeFaderEffect::setVolumeDecibel(double newVolumeDecibel) |
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{ |
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setVolume(exp(newVolumeDecibel * log10over20)); |
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} |
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|
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|
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void VolumeFaderEffect::fadeIn(int fadeTime) |
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{ |
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fadeTo(1.0, fadeTime); |
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} |
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|
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void VolumeFaderEffect::fadeOut(int fadeTime) |
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{ |
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fadeTo(0.0, fadeTime); |
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} |
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|
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void VolumeFaderEffect::fadeTo(float volume, int fadeTime) |
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{ |
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K_D(VolumeFaderEffect); |
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if (k_ptr->backendObject()) |
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INTERFACE_CALL(fadeTo(volume, fadeTime)); |
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else |
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d->currentVolume = volume; |
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} |
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|
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bool VolumeFaderEffectPrivate::aboutToDeleteBackendObject() |
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{ |
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if (m_backendObject) { |
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currentVolume = pINTERFACE_CALL(volume()); |
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fadeCurve = pINTERFACE_CALL(fadeCurve()); |
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} |
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return true; |
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} |
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|
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void VolumeFaderEffectPrivate::setupBackendObject() |
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{ |
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Q_ASSERT(m_backendObject); |
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|
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// set up attributes |
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pINTERFACE_CALL(setVolume(currentVolume)); |
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pINTERFACE_CALL(setFadeCurve(fadeCurve)); |
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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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#include "moc_volumefadereffect.cpp" |
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|
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#undef PHONON_CLASSNAME |
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// vim: sw=4 ts=4 |
