/* This file is part of the KDE project | |
Copyright (C) 2006 Matthias Kretz <kretz@kde.org> | |
This library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) version 3, or any | |
later version accepted by the membership of KDE e.V. (or its | |
successor approved by the membership of KDE e.V.), Nokia Corporation | |
(or its successors, if any) and the KDE Free Qt Foundation, which shall | |
act as a proxy defined in Section 6 of version 3 of the license. | |
This library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with this library. If not, see <http://www.gnu.org/licenses/>. | |
*/ | |
#include "volumefadereffect.h" | |
#include "volumefadereffect_p.h" | |
#include "volumefaderinterface.h" | |
#include "factory_p.h" | |
#include <QtCore/qmath.h> | |
#define PHONON_CLASSNAME VolumeFaderEffect | |
#define PHONON_INTERFACENAME VolumeFaderInterface | |
QT_BEGIN_NAMESPACE | |
#ifndef QT_NO_PHONON_VOLUMEFADEREFFECT | |
namespace Phonon | |
{ | |
PHONON_HEIR_IMPL(Effect) | |
PHONON_INTERFACE_GETTER(float, volume, d->currentVolume) | |
PHONON_INTERFACE_SETTER(setVolume, currentVolume, float) | |
PHONON_INTERFACE_GETTER(Phonon::VolumeFaderEffect::FadeCurve, fadeCurve, d->fadeCurve) | |
PHONON_INTERFACE_SETTER(setFadeCurve, fadeCurve, Phonon::VolumeFaderEffect::FadeCurve) | |
#ifndef PHONON_LOG10OVER20 | |
#define PHONON_LOG10OVER20 | |
static const double log10over20 = 0.1151292546497022842; // ln(10) / 20 | |
#endif // PHONON_LOG10OVER20 | |
double VolumeFaderEffect::volumeDecibel() const | |
{ | |
return log(volume()) / log10over20; | |
} | |
void VolumeFaderEffect::setVolumeDecibel(double newVolumeDecibel) | |
{ | |
setVolume(exp(newVolumeDecibel * log10over20)); | |
} | |
void VolumeFaderEffect::fadeIn(int fadeTime) | |
{ | |
fadeTo(1.0, fadeTime); | |
} | |
void VolumeFaderEffect::fadeOut(int fadeTime) | |
{ | |
fadeTo(0.0, fadeTime); | |
} | |
void VolumeFaderEffect::fadeTo(float volume, int fadeTime) | |
{ | |
K_D(VolumeFaderEffect); | |
if (k_ptr->backendObject()) | |
INTERFACE_CALL(fadeTo(volume, fadeTime)); | |
else | |
d->currentVolume = volume; | |
} | |
bool VolumeFaderEffectPrivate::aboutToDeleteBackendObject() | |
{ | |
if (m_backendObject) { | |
currentVolume = pINTERFACE_CALL(volume()); | |
fadeCurve = pINTERFACE_CALL(fadeCurve()); | |
} | |
return true; | |
} | |
void VolumeFaderEffectPrivate::setupBackendObject() | |
{ | |
Q_ASSERT(m_backendObject); | |
// set up attributes | |
pINTERFACE_CALL(setVolume(currentVolume)); | |
pINTERFACE_CALL(setFadeCurve(fadeCurve)); | |
} | |
} | |
#endif //QT_NO_PHONON_VOLUMEFADEREFFECT | |
QT_END_NAMESPACE | |
#include "moc_volumefadereffect.cpp" | |
#undef PHONON_CLASSNAME | |
// vim: sw=4 ts=4 |