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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "videoplayer.h"
++
++ #include <QBoxLayout>
++ #include <QFileDialog>
++ #include <QHBoxLayout>
++ #include <QLabel>
++ #include <QMediaPlayer>
++ #include <QPushButton>
++ #include <QSizePolicy>
++ #include <QSlider>
++ #include <QStandardPaths>
++ #include <QString>
++ #include <QStyle>
++ #include <QVideoWidget>
++
++ VideoPlayer::VideoPlayer(QWidget *parent) : QWidget(parent)
++ {
++ m_mediaPlayer = new QMediaPlayer(this);
++ QVideoWidget *videoWidget = new QVideoWidget;
++
++ QAbstractButton *openButton = new QPushButton(tr("Open..."));
++ connect(openButton, &QAbstractButton::clicked, this, &VideoPlayer::openFile);
++
++ m_playButton = new QPushButton;
++ m_playButton->setEnabled(false);
++ m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
++
++ connect(m_playButton, &QAbstractButton::clicked, this, &VideoPlayer::play);
++
++ m_positionSlider = new QSlider(Qt::Horizontal);
++ m_positionSlider->setRange(0, 0);
++
++ connect(m_positionSlider, &QAbstractSlider::sliderMoved, this, &VideoPlayer::setPosition);
++
++ m_errorLabel = new QLabel;
++ m_errorLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Maximum);
++
++ QBoxLayout *controlLayout = new QHBoxLayout;
++ controlLayout->setContentsMargins(0, 0, 0, 0);
++ controlLayout->addWidget(openButton);
++ controlLayout->addWidget(m_playButton);
++ controlLayout->addWidget(m_positionSlider);
++
++ QBoxLayout *layout = new QVBoxLayout;
++ layout->addWidget(videoWidget);
++ layout->addLayout(controlLayout);
++ layout->addWidget(m_errorLabel);
++
++ setLayout(layout);
++
++ m_mediaPlayer->setVideoOutput(videoWidget);
++ connect(m_mediaPlayer, &QMediaPlayer::playbackStateChanged, this,
++ &VideoPlayer::mediaStateChanged);
++ connect(m_mediaPlayer, &QMediaPlayer::positionChanged, this, &VideoPlayer::positionChanged);
++ connect(m_mediaPlayer, &QMediaPlayer::durationChanged, this, &VideoPlayer::durationChanged);
++ connect(m_mediaPlayer, &QMediaPlayer::errorChanged, this, &VideoPlayer::handleError);
++ }
++
++ VideoPlayer::~VideoPlayer() { }
++
++ void VideoPlayer::openFile()
++ {
++ QFileDialog fileDialog(this);
++ fileDialog.setAcceptMode(QFileDialog::AcceptOpen);
++ fileDialog.setWindowTitle(tr("Open Movie"));
++ fileDialog.setDirectory(QStandardPaths::standardLocations(QStandardPaths::MoviesLocation)
++ .value(0, QDir::homePath()));
++ if (fileDialog.exec() == QDialog::Accepted)
++ setUrl(fileDialog.selectedUrls().constFirst());
++ }
++
++ void VideoPlayer::setUrl(const QUrl &url)
++ {
++ m_errorLabel->setText(QString());
++ setWindowFilePath(url.isLocalFile() ? url.toLocalFile() : QString());
++ m_mediaPlayer->setSource(url);
++ m_playButton->setEnabled(true);
++ }
++
++ void VideoPlayer::play()
++ {
++ switch (m_mediaPlayer->playbackState()) {
++ case QMediaPlayer::PlayingState:
++ m_mediaPlayer->pause();
++ break;
++ default:
++ m_mediaPlayer->play();
++ break;
++ }
++ }
++
++ void VideoPlayer::mediaStateChanged(QMediaPlayer::PlaybackState state)
++ {
++ switch (state) {
++ case QMediaPlayer::PlayingState:
++ m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
++ break;
++ default:
++ m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
++ break;
++ }
++ }
++
++ void VideoPlayer::positionChanged(qint64 position)
++ {
++ m_positionSlider->setValue(position);
++ }
++
++ void VideoPlayer::durationChanged(qint64 duration)
++ {
++ m_positionSlider->setRange(0, duration);
++ }
++
++ void VideoPlayer::setPosition(int position)
++ {
++ m_mediaPlayer->setPosition(position);
++ }
++
++ void VideoPlayer::handleError()
++ {
++ if (m_mediaPlayer->error() == QMediaPlayer::NoError)
++ return;
++
++ m_playButton->setEnabled(false);
++ const QString errorString = m_mediaPlayer->errorString();
++ QString message = "Error: ";
++ if (errorString.isEmpty())
++ message += " #" + QString::number(int(m_mediaPlayer->error()));
++ else
++ message += errorString;
++ m_errorLabel->setText(message);
++ }
++
++ #include "moc_videoplayer.cpp"