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50
51#include "videoplayer.h"
52
53#include "videowidget.h"
54
55#include <QtWidgets>
56#include <qvideosurfaceformat.h>
57
58VideoPlayer::VideoPlayer(QWidget *parent)
59 : QWidget(parent)
60 , mediaPlayer(0, QMediaPlayer::VideoSurface)
61 , playButton(0)
62 , positionSlider(0)
63{
64 VideoWidget *videoWidget = new VideoWidget;
65
66 QAbstractButton *openButton = new QPushButton(tr(s: "Open..."));
67 connect(sender: openButton, signal: &QAbstractButton::clicked,
68 receiver: this, slot: &VideoPlayer::openFile);
69
70 playButton = new QPushButton;
71 playButton->setEnabled(false);
72 playButton->setIcon(style()->standardIcon(standardIcon: QStyle::SP_MediaPlay));
73
74 connect(sender: playButton, signal: &QAbstractButton::clicked,
75 receiver: this, slot: &VideoPlayer::play);
76
77 positionSlider = new QSlider(Qt::Horizontal);
78 positionSlider->setRange(min: 0, max: 0);
79
80 connect(sender: positionSlider, signal: &QSlider::sliderMoved,
81 receiver: this, slot: &VideoPlayer::setPosition);
82
83 QBoxLayout *controlLayout = new QHBoxLayout;
84 controlLayout->setContentsMargins(left: 0, top: 0, right: 0, bottom: 0);
85 controlLayout->addWidget(openButton);
86 controlLayout->addWidget(playButton);
87 controlLayout->addWidget(positionSlider);
88
89 QBoxLayout *layout = new QVBoxLayout;
90 layout->addWidget(videoWidget);
91 layout->addLayout(layout: controlLayout);
92
93 setLayout(layout);
94
95 mediaPlayer.setVideoOutput(videoWidget->videoSurface());
96 connect(sender: &mediaPlayer, signal: &QMediaPlayer::stateChanged,
97 receiver: this, slot: &VideoPlayer::mediaStateChanged);
98 connect(sender: &mediaPlayer, signal: &QMediaPlayer::positionChanged, receiver: this, slot: &VideoPlayer::positionChanged);
99 connect(sender: &mediaPlayer, signal: &QMediaPlayer::durationChanged, receiver: this, slot: &VideoPlayer::durationChanged);
100}
101
102VideoPlayer::~VideoPlayer()
103{
104}
105
106void VideoPlayer::openFile()
107{
108 QString fileName = QFileDialog::getOpenFileName(parent: this, caption: tr(s: "Open Movie"),dir: QDir::homePath());
109
110 if (!fileName.isEmpty()) {
111 mediaPlayer.setMedia(media: QUrl::fromLocalFile(localfile: fileName));
112
113 playButton->setEnabled(true);
114 }
115}
116
117void VideoPlayer::play()
118{
119 switch(mediaPlayer.state()) {
120 case QMediaPlayer::PlayingState:
121 mediaPlayer.pause();
122 break;
123 default:
124 mediaPlayer.play();
125 break;
126 }
127}
128
129void VideoPlayer::mediaStateChanged(QMediaPlayer::State state)
130{
131 switch(state) {
132 case QMediaPlayer::PlayingState:
133 playButton->setIcon(style()->standardIcon(standardIcon: QStyle::SP_MediaPause));
134 break;
135 default:
136 playButton->setIcon(style()->standardIcon(standardIcon: QStyle::SP_MediaPlay));
137 break;
138 }
139}
140
141void VideoPlayer::positionChanged(qint64 position)
142{
143 positionSlider->setValue(position);
144}
145
146void VideoPlayer::durationChanged(qint64 duration)
147{
148 positionSlider->setRange(min: 0, max: duration);
149}
150
151void VideoPlayer::setPosition(int position)
152{
153 mediaPlayer.setPosition(position);
154}
155

source code of qtmultimedia/examples/multimediawidgets/customvideosurface/customvideowidget/videoplayer.cpp