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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "playercontrols.h"
#include <QBoxLayout>
#include <QSlider>
#include <QStyle>
#include <QToolButton>
#include <QComboBox>
#include <QAudio>
PlayerControls::PlayerControls(QWidget *parent)
: QWidget(parent)
{
m_playButton = new QToolButton(this);
m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
connect(m_playButton, &QAbstractButton::clicked, this, &PlayerControls::playClicked);
m_stopButton = new QToolButton(this);
m_stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop));
m_stopButton->setEnabled(false);
connect(m_stopButton, &QAbstractButton::clicked, this, &PlayerControls::stop);
m_nextButton = new QToolButton(this);
m_nextButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward));
connect(m_nextButton, &QAbstractButton::clicked, this, &PlayerControls::next);
m_previousButton = new QToolButton(this);
m_previousButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward));
connect(m_previousButton, &QAbstractButton::clicked, this, &PlayerControls::previous);
m_muteButton = new QToolButton(this);
m_muteButton->setIcon(style()->standardIcon(QStyle::SP_MediaVolume));
connect(m_muteButton, &QAbstractButton::clicked, this, &PlayerControls::muteClicked);
m_volumeSlider = new QSlider(Qt::Horizontal, this);
m_volumeSlider->setRange(0, 100);
connect(m_volumeSlider, &QSlider::valueChanged, this, &PlayerControls::onVolumeSliderValueChanged);
m_rateBox = new QComboBox(this);
m_rateBox->addItem("0.5x", QVariant(0.5));
m_rateBox->addItem("1.0x", QVariant(1.0));
m_rateBox->addItem("2.0x", QVariant(2.0));
m_rateBox->setCurrentIndex(1);
connect(m_rateBox, QOverload<int>::of(&QComboBox::activated), this, &PlayerControls::updateRate);
QBoxLayout *layout = new QHBoxLayout;
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_stopButton);
layout->addWidget(m_previousButton);
layout->addWidget(m_playButton);
layout->addWidget(m_nextButton);
layout->addWidget(m_muteButton);
layout->addWidget(m_volumeSlider);
layout->addWidget(m_rateBox);
setLayout(layout);
}
QMediaPlayer::PlaybackState PlayerControls::state() const
{
return m_playerState;
}
void PlayerControls::setState(QMediaPlayer::PlaybackState state)
{
if (state != m_playerState) {
m_playerState = state;
switch (state) {
case QMediaPlayer::StoppedState:
m_stopButton->setEnabled(false);
m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
break;
case QMediaPlayer::PlayingState:
m_stopButton->setEnabled(true);
m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
break;
case QMediaPlayer::PausedState:
m_stopButton->setEnabled(true);
m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
break;
}
}
}
float PlayerControls::volume() const
{
qreal linearVolume = QAudio::convertVolume(m_volumeSlider->value() / qreal(100),
QAudio::LogarithmicVolumeScale,
QAudio::LinearVolumeScale);
return linearVolume;
}
void PlayerControls::setVolume(float volume)
{
qreal logarithmicVolume = QAudio::convertVolume(volume,
QAudio::LinearVolumeScale,
QAudio::LogarithmicVolumeScale);
m_volumeSlider->setValue(qRound(logarithmicVolume * 100));
}
bool PlayerControls::isMuted() const
{
return m_playerMuted;
}
void PlayerControls::setMuted(bool muted)
{
if (muted != m_playerMuted) {
m_playerMuted = muted;
m_muteButton->setIcon(style()->standardIcon(muted
? QStyle::SP_MediaVolumeMuted
: QStyle::SP_MediaVolume));
}
}
void PlayerControls::playClicked()
{
switch (m_playerState) {
case QMediaPlayer::StoppedState:
case QMediaPlayer::PausedState:
emit play();
break;
case QMediaPlayer::PlayingState:
emit pause();
break;
}
}
void PlayerControls::muteClicked()
{
emit changeMuting(!m_playerMuted);
}
qreal PlayerControls::playbackRate() const
{
return m_rateBox->itemData(m_rateBox->currentIndex()).toDouble();
}
void PlayerControls::setPlaybackRate(float rate)
{
for (int i = 0; i < m_rateBox->count(); ++i) {
if (qFuzzyCompare(rate, float(m_rateBox->itemData(i).toDouble()))) {
m_rateBox->setCurrentIndex(i);
return;
}
}
m_rateBox->addItem(QString("%1x").arg(rate), QVariant(rate));
m_rateBox->setCurrentIndex(m_rateBox->count() - 1);
}
void PlayerControls::updateRate()
{
emit changeRate(playbackRate());
}
void PlayerControls::onVolumeSliderValueChanged()
{
emit changeVolume(volume());
}
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