1 files changed, 108 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/phonon/volumefadereffect.cpp b/src/3rdparty/phonon/phonon/volumefadereffect.cpp
new file mode 100644
index 0000000000..066199ea42
--- /dev/null
+++ b/src/3rdparty/phonon/phonon/volumefadereffect.cpp
@@ -0,0 +1,108 @@
+/*  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.), Trolltech ASA 
+    (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