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#include "playercontrols.h"

#include <QtGui/qboxlayout.h>

#include <QtGui/qslider.h>

#include <QtGui/qstyle.h>

#include <QtGui/qtoolbutton.h>

#include <QtGui/qcombobox.h>

PlayerControls::PlayerControls(QWidget *parent)

    : QWidget(parent)

    , playerState(QMediaPlayer::StoppedState)

    , playerMuted(false)

    , playButton(0)

    , stopButton(0)

    , nextButton(0)

    , previousButton(0)

    , muteButton(0)

    , volumeSlider(0)

    , rateBox(0)

{

    playButton = new QToolButton(this);

    playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));

    connect(playButton, SIGNAL(clicked()), this, SLOT(playClicked()));

    stopButton = new QToolButton(this);

    stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop));

    stopButton->setEnabled(false);

    connect(stopButton, SIGNAL(clicked()), this, SIGNAL(stop()));

    nextButton = new QToolButton(this);

    nextButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward));

    connect(nextButton, SIGNAL(clicked()), this, SIGNAL(next()));

    previousButton = new QToolButton(this);

    previousButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward));

    connect(previousButton, SIGNAL(clicked()), this, SIGNAL(previous()));

    muteButton = new QToolButton(this);

    muteButton->setIcon(style()->standardIcon(QStyle::SP_MediaVolume));

    connect(muteButton, SIGNAL(clicked()), this, SLOT(muteClicked()));

    volumeSlider = new QSlider(Qt::Horizontal, this);

#ifndef Q_WS_MAEMO_5

    volumeSlider->setRange(0, 100);

    connect(volumeSlider, SIGNAL(sliderMoved(int)), this, SIGNAL(changeVolume(int)));

#endif

    rateBox = new QComboBox(this);

    rateBox->addItem("0.5x", QVariant(0.5));

    rateBox->addItem("1.0x", QVariant(1.0));

    rateBox->addItem("2.0x", QVariant(2.0));

    rateBox->setCurrentIndex(1);

    connect(rateBox, SIGNAL(activated(int)), SLOT(updateRate()));

    QBoxLayout *layout = new QHBoxLayout;

    layout->setMargin(0);

    layout->addWidget(stopButton);

    layout->addWidget(previousButton);

    layout->addWidget(playButton);

    layout->addWidget(nextButton);

    layout->addWidget(muteButton);

    if (volumeSlider)

        layout->addWidget(volumeSlider);

    if (rateBox)

        layout->addWidget(rateBox);

    setLayout(layout);

}

QMediaPlayer::State PlayerControls::state() const

{

    return playerState;

}

void PlayerControls::setState(QMediaPlayer::State state)

{

    if (state != playerState) {

        playerState = state;

        switch (state) {

        case QMediaPlayer::StoppedState:

            stopButton->setEnabled(false);

            playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));

            break;

        case QMediaPlayer::PlayingState:

            stopButton->setEnabled(true);

            playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));

            break;

        case QMediaPlayer::PausedState:

            stopButton->setEnabled(true);

            playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));

            break;

        }

    }

}

int PlayerControls::volume() const

{

    return volumeSlider ? volumeSlider->value() : 0;

}

void PlayerControls::setVolume(int volume)

{

    if (volumeSlider)

        volumeSlider->setValue(volume);

}

bool PlayerControls::isMuted() const

{

    return playerMuted;

}

void PlayerControls::setMuted(bool muted)

{

    if (muted != playerMuted) {

        playerMuted = muted;

        muteButton->setIcon(style()->standardIcon(muted

                ? QStyle::SP_MediaVolumeMuted

                : QStyle::SP_MediaVolume));

    }

}

void PlayerControls::playClicked()

{

    switch (playerState) {

    case QMediaPlayer::StoppedState:

    case QMediaPlayer::PausedState:

        emit play();

        break;

    case QMediaPlayer::PlayingState:

        emit pause();

        break;

    }

}

void PlayerControls::muteClicked()

{

    emit changeMuting(!playerMuted);

}

qreal PlayerControls::playbackRate() const

{

    return rateBox->itemData(rateBox->currentIndex()).toDouble();

}

void PlayerControls::setPlaybackRate(float rate)

{

    for (int i=0; i<rateBox->count(); i++) {

        if (qFuzzyCompare(rate, float(rateBox->itemData(i).toDouble()))) {

            rateBox->setCurrentIndex(i);

            return;

        }

    }

    rateBox->addItem( QString("%1x").arg(rate), QVariant(rate));

    rateBox->setCurrentIndex(rateBox->count()-1);

}

void PlayerControls::updateRate()

{

    emit changeRate(playbackRate());

}