QVideoWidget Class

The QVideoWidget class provides a widget which presents video produced by a media object. More...

• List of all members, including inherited members

Properties

Public Functions

Reimplemented Public Functions

Public Slots

Signals

Reimplemented Protected Functions

Detailed Description

Attaching a QVideoWidget to a QMediaObject allows it to display the video or image output of that media object. A QVideoWidget is attached to media object by passing a pointer to the QMediaObject in its constructor, and detached by destroying the QVideoWidget.

player = new QMediaPlayer;

playlist = new QMediaPlaylist(player);
playlist->addMedia(QUrl("http://example.com/myclip1.mp4"));
playlist->addMedia(QUrl("http://example.com/myclip2.mp4"));

videoWidget = new QVideoWidget;
player->setVideoOutput(videoWidget);

videoWidget->show();
playlist->setCurrentIndex(1);
player->play();

Note: Only a single display output can be attached to a media object at one time.

See also QMediaObject, QMediaPlayer, and QGraphicsVideoItem.

QImage img = QImage("images/qt-logo.png").convertToFormat(QImage::Format_ARGB32);
QVideoSurfaceFormat format(img.size(), QVideoFrame::Format_ARGB32);
videoWidget = new QVideoWidget;
videoWidget->videoSurface()->start(format);
videoWidget->videoSurface()->present(img);
videoWidget->show();

Member Function Documentation

QVideoWidget::QVideoWidget(QWidget *parent = nullptr)

Constructs a new video widget.

The parent is passed to QWidget.

[signal] void QVideoWidget::brightnessChanged(int brightness)

Signals that a video widgets's brightness adjustment has changed.

Note: Notifier signal for property brightness.

See also brightness().

[signal] void QVideoWidget::contrastChanged(int contrast)

Signals that a video widgets's contrast adjustment has changed.

Note: Notifier signal for property contrast.

See also contrast().

[signal] void QVideoWidget::fullScreenChanged(bool fullScreen)

Signals that the fullScreen mode of a video widget has changed.

Note: Notifier signal for property fullScreen.

See also isFullScreen().

[signal] void QVideoWidget::hueChanged(int hue)

Signals that a video widgets's hue has changed.

Note: Notifier signal for property hue.

See also hue().

[signal] void QVideoWidget::saturationChanged(int saturation)

Signals that a video widgets's saturation has changed.

Note: Notifier signal for property saturation.

See also saturation().

[virtual] QVideoWidget::~QVideoWidget()

Destroys a video widget.

[override virtual protected] bool QVideoWidget::event(QEvent *event)

Reimplements: QWidget::event(QEvent *event).

Current event event. Returns the value of the baseclass QWidget::event(QEvent *event) function.

[override virtual protected] void QVideoWidget::hideEvent(QHideEvent *event)

Reimplements: QWidget::hideEvent(QHideEvent *event).

Handles the hide event.

[override virtual protected] void QVideoWidget::moveEvent(QMoveEvent *event)

Reimplements: QWidget::moveEvent(QMoveEvent *event).

Handles the move event.

[override virtual protected] void QVideoWidget::paintEvent(QPaintEvent *event)

Reimplements: QWidget::paintEvent(QPaintEvent *event).

Handles the paint event.

[override virtual protected] void QVideoWidget::resizeEvent(QResizeEvent *event)

Reimplements: QWidget::resizeEvent(QResizeEvent *event).

Handles the resize event.

[override virtual protected] void QVideoWidget::showEvent(QShowEvent *event)

Reimplements: QWidget::showEvent(QShowEvent *event).

Handles the show event.

[override virtual] QSize QVideoWidget::sizeHint() const

Reimplements an access function for property: QWidget::sizeHint.

Returns the size hint for the current back end, if there is one, or else the size hint from QWidget.