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