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QGraphicsVideoItem Class

The QGraphicsVideoItem class provides a graphics item which display video produced by a QMediaObject.

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QGraphicsVideoItem Class

Detailed Description

Attaching a QGraphicsVideoItem to a QMediaObject allows it to display the video or image output of that media object. A QGraphicsVideoItem is attached to a media object by passing a pointer to the QMediaObject to the setMediaObject() function.

 
Sélectionnez
player = new QMediaPlayer(this);

QGraphicsVideoItem *item = new QGraphicsVideoItem;
player->setVideoOutput(item);
graphicsView->scene()->addItem(item);
graphicsView->show();

player->setMedia(QUrl("http://example.com/myclip4.ogv"));
player->play();

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

See Also

Property Documentation

 

aspectRatioMode : Qt::AspectRatioMode

how a video is scaled to fit the graphics item's size.

Access functions:

  • aspectRatioMode() const

  • void setAspectRatioMode( mode)

mediaObject : QMediaObject* const

This property holds the media object which provides the video displayed by a graphics item.

Access functions:

  • virtual *mediaObject() const override

[read-only] nativeSize : const QSizeF

This property holds the native size of the video.

Access functions:

  • nativeSize() const

Notifier signal:

offset : QPointF

This property holds the video item's offset.

QGraphicsVideoItem will draw video using the offset for its top left corner.

Access functions:

  • offset() const

  • void setOffset(const &offset)

size : QSizeF

This property holds the video item's size.

QGraphicsVideoItem will draw video scaled to fit size according to its fillMode.

Access functions:

  • size() const

  • void setSize(const &size)

Member Function Documentation

 

[explicit] QGraphicsVideoItem::QGraphicsVideoItem(QGraphicsItem *parent = nullptr)

Constructs a graphics item that displays video.

The parent is passed to QGraphicsItem.

[virtual] QGraphicsVideoItem::~QGraphicsVideoItem()

Destroys a video graphics item.

[override virtual] QRectF QGraphicsVideoItem::boundingRect() const

void QGraphicsVideoItem::nativeSizeChanged(const QSizeF &size)

Signals that the native size of the video has changed.

Notifier signal for property nativeSize.

[override virtual] void QGraphicsVideoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr)

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