/*  This file is part of the KDE project

    Copyright (C) 2006-2007 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 "volumeslider.h"

#include "volumeslider_p.h"

#include "audiooutput.h"

#include "phonondefs_p.h"

#include "phononnamespace_p.h"

#include "factory_p.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_PHONON_VOLUMESLIDER

namespace Phonon

{

VolumeSlider::VolumeSlider(QWidget *parent)

    : QWidget(parent),

    k_ptr(new VolumeSliderPrivate(this))

{

    K_D(VolumeSlider);

#ifndef QT_NO_TOOLTIP

    setToolTip(tr("Volume: %1%").arg(100));

#endif

#ifndef QT_NO_WHATSTHIS

    setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%. The rightmost is %1%").arg(100));

#endif

    connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_sliderChanged(int)));

    connect(&d->muteButton, SIGNAL(clicked()), SLOT(_k_buttonClicked()));

    setFocusProxy(&d->slider);

}

VolumeSlider::VolumeSlider(AudioOutput *output, QWidget *parent)

    : QWidget(parent),

    k_ptr(new VolumeSliderPrivate(this))

{

    K_D(VolumeSlider);

#ifndef QT_NO_TOOLTIP

    setToolTip(tr("Volume: %1%").arg(100));

#endif

#ifndef QT_NO_WHATSTHIS

    setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%. The rightmost is %1%").arg(100));

#endif

    connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_sliderChanged(int)));

    connect(&d->muteButton, SIGNAL(clicked()), SLOT(_k_buttonClicked()));

    if (output) {

        d->output = output;

        d->slider.setValue(qRound(100 * output->volume()));

        d->slider.setEnabled(true);

        d->muteButton.setEnabled(true);

        connect(output, SIGNAL(volumeChanged(qreal)), SLOT(_k_volumeChanged(qreal)));

        connect(output, SIGNAL(mutedChanged(bool)), SLOT(_k_mutedChanged(bool)));

    }

    setFocusProxy(&d->slider);

}

VolumeSlider::~VolumeSlider()

{

    delete k_ptr;

}

bool VolumeSlider::isMuteVisible() const

{

    return !k_ptr->muteButton.isHidden();

}

void VolumeSlider::setMuteVisible(bool visible)

{

    k_ptr->muteButton.setVisible(visible);

}

QSize VolumeSlider::iconSize() const

{

    return k_ptr->muteButton.iconSize();

}

void VolumeSlider::setIconSize(const QSize &iconSize)

{

    pDebug() << Q_FUNC_INFO << iconSize;

    k_ptr->muteButton.setIconSize(iconSize);

}

qreal VolumeSlider::maximumVolume() const

{

    return k_ptr->slider.maximum() * 0.01;

}

void VolumeSlider::setMaximumVolume(qreal volume)

{

    int max = static_cast<int>(volume * 100);

    k_ptr->slider.setMaximum(max);

#ifndef QT_NO_WHATSTHIS

    setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%. The rightmost is %1%")

            .arg(max));

#endif

}

Qt::Orientation VolumeSlider::orientation() const

{

    return k_ptr->slider.orientation();

}

void VolumeSlider::setOrientation(Qt::Orientation o)

{

    K_D(VolumeSlider);

    Qt::Alignment align = (o == Qt::Horizontal ? Qt::AlignVCenter : Qt::AlignHCenter);

    d->layout.setAlignment(&d->muteButton, align);

    d->layout.setAlignment(&d->slider, align);

    d->layout.setDirection(o == Qt::Horizontal ? QBoxLayout::LeftToRight : QBoxLayout::TopToBottom);

    d->slider.setOrientation(o);

}

AudioOutput *VolumeSlider::audioOutput() const

{

    K_D(const VolumeSlider);

    return d->output;

}

void VolumeSlider::setAudioOutput(AudioOutput *output)

{

    K_D(VolumeSlider);

    if (d->output) {

        disconnect(d->output, 0, this, 0);

    }

    d->output = output;

    if (output) {

        d->slider.setValue(qRound(100 * output->volume()));

        d->slider.setEnabled(true);

        d->muteButton.setEnabled(true);

        d->_k_volumeChanged(output->volume());

        d->_k_mutedChanged(output->isMuted());

        connect(output, SIGNAL(volumeChanged(qreal)), SLOT(_k_volumeChanged(qreal)));

        connect(output, SIGNAL(mutedChanged(bool)), SLOT(_k_mutedChanged(bool)));

    } else {

        d->slider.setValue(100);

        d->slider.setEnabled(false);

        d->muteButton.setEnabled(false);

    }

}

void VolumeSliderPrivate::_k_buttonClicked()

{

    if (output) {

        output->setMuted(!output->isMuted());

    } else {

        slider.setEnabled(false);

        muteButton.setEnabled(false);

    }

}

void VolumeSliderPrivate::_k_mutedChanged(bool muted)

{

#ifndef QT_NO_TOOLTIP

    Q_Q(VolumeSlider);

#endif

    if (muted) {

#ifndef QT_NO_TOOLTIP

        q->setToolTip(VolumeSlider::tr("Muted"));

#endif

        muteButton.setIcon(mutedIcon);

    } else {

#ifndef QT_NO_TOOLTIP

        q->setToolTip(VolumeSlider::tr("Volume: %1%").arg(static_cast<int>(output->volume() * 100.0)));

#endif

        muteButton.setIcon(volumeIcon);

    }

}

void VolumeSliderPrivate::_k_sliderChanged(int value)

{

#ifndef QT_NO_TOOLTIP

    Q_Q(VolumeSlider);

#endif

    if (output) {

#ifndef QT_NO_TOOLTIP

        if (!output->isMuted()) {

           q->setToolTip(VolumeSlider::tr("Volume: %1%").arg(value));

        }

#endif

        ignoreVolumeChange = true;

        output->setVolume((static_cast<qreal>(value)) * 0.01);

        ignoreVolumeChange = false;

    } else {

        slider.setEnabled(false);

        muteButton.setEnabled(false);

    }

}

void VolumeSliderPrivate::_k_volumeChanged(qreal value)

{

    if (!ignoreVolumeChange) {

        slider.setValue(qRound(100 * value));

    }

}

bool VolumeSlider::hasTracking() const

{

    return k_ptr->slider.hasTracking();

}

void VolumeSlider::setTracking(bool tracking)

{

    k_ptr->slider.setTracking(tracking);

}

int VolumeSlider::pageStep() const

{

    return k_ptr->slider.pageStep();

}

void VolumeSlider::setPageStep(int milliseconds)

{

    k_ptr->slider.setPageStep(milliseconds);

}

int VolumeSlider::singleStep() const

{

    return k_ptr->slider.singleStep();

}

void VolumeSlider::setSingleStep(int milliseconds)

{

    k_ptr->slider.setSingleStep(milliseconds);

}

} // namespace Phonon

#endif //QT_NO_PHONON_VOLUMESLIDER

QT_END_NAMESPACE

#include "moc_volumeslider.cpp"

// vim: sw=4 et