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QVideoWidget Class ReferenceThe QVideoWidget class provides a widget which presents video produced by a media object. More... #include <QVideoWidget> This class is under development and is subject to change. Inherits QWidget. Public Types
Properties
Public Functions
Reimplemented Public Functions
Public Slots
Signals
Reimplemented Protected Functions
Additional Inherited Members
Detailed DescriptionThe QVideoWidget class provides a widget which presents video produced by a media object. 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;
widget = new QVideoWidget(player);
widget->show();
player->setMedia(QUrl("http://example.com/movie.mp4"));
player->play();
Note: Only a single display output can be attached to a media object at one time. See also QMediaObject, QMediaPlayer, and QGraphicsVideoItem. Member Type Documentation
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| Constant | Value | Description |
|---|---|---|
| QVideoWidget::IgnoreAspectRatio | 0 | The video is scaled to fill the widget ignoring its aspect ratio. |
| QVideoWidget::KeepAspectRatio | 1 | The video is scaled to the largest rectangle that will fit within the widget's dimensions while still retaining its original aspect ratio. |
Property Documentation
aspectRatioMode : AspectRatioMode
This property holds how video is scaled with respect to its aspect ratio.
Access functions:
| AspectRatioMode | aspectRatioMode () const |
| void | setAspectRatioMode ( QVideoWidget::AspectRatioMode mode ) |
brightness : int
This property holds an adjustment to the brightness of displayed video.
Valid brightness values range between -100 and 100, the default is 0.
Access functions:
| int | brightness () const |
| void | setBrightness ( int brightness ) |
Notifier signal:
| void | brightnessChanged ( int brightness ) |
contrast : int
This property holds an adjustment to the contrast of displayed video.
Valid contrast values range between -100 and 100, the default is 0.
Access functions:
| int | contrast () const |
| void | setContrast ( int contrast ) |
Notifier signal:
| void | contrastChanged ( int contrast ) |
fullScreen : bool
This property holds whether video display is confined to a window or is fullScreen.
Access functions:
| bool | isFullScreen () const |
| void | setFullScreen ( bool fullScreen ) |
Notifier signal:
| void | fullScreenChanged ( bool fullScreen ) |
hue : int
This property holds an adjustment to the hue of displayed video.
Valid hue values range between -100 and 100, the default is 0.
Access functions:
| int | hue () const |
| void | setHue ( int hue ) |
Notifier signal:
| void | hueChanged ( int hue ) |
saturation : int
This property holds an adjustment to the saturation of displayed video.
Valid saturation values range between -100 and 100, the default is 0.
Access functions:
| int | saturation () const |
| void | setSaturation ( int saturation ) |
Notifier signal:
| void | saturationChanged ( int saturation ) |
Member Function Documentation
QVideoWidget::QVideoWidget ( QMediaObject * object, QWidget * parent = 0 )
Constructs a new widget which displays video produced by a media object.
The parent is passed to QWidget.
QVideoWidget::~QVideoWidget ()
Destroys a video widget.
void QVideoWidget::brightnessChanged ( int brightness ) [signal]
Signals that a video widgets's brightness adjustment has changed.
See also brightness.
void QVideoWidget::contrastChanged ( int contrast ) [signal]
Signals that a video widgets's contrast adjustment has changed.
See also contrast.
void QVideoWidget::fullScreenChanged ( bool fullScreen ) [signal]
Signals that the fullScreen mode of a video widget has changed.
See also fullScreen.
void QVideoWidget::hideEvent ( QHideEvent * event ) [virtual protected]
Reimplemented from QWidget::hideEvent().
Handles the hide event.
void QVideoWidget::hueChanged ( int hue ) [signal]
Signals that a video widgets's hue has changed.
See also hue.
void QVideoWidget::moveEvent ( QMoveEvent * event ) [virtual protected]
Reimplemented from QWidget::moveEvent().
Handles the move event.
void QVideoWidget::paintEvent ( QPaintEvent * event ) [virtual protected]
Reimplemented from QWidget::paintEvent().
Handles the paint event.
void QVideoWidget::resizeEvent ( QResizeEvent * event ) [virtual protected]
Reimplemented from QWidget::resizeEvent().
Handles the resize event.
void QVideoWidget::saturationChanged ( int saturation ) [signal]
Signals that a video widgets's saturation has changed.
See also saturation.
void QVideoWidget::showEvent ( QShowEvent * event ) [virtual protected]
Reimplemented from QWidget::showEvent().
Handles the show event.
QSize QVideoWidget::sizeHint () const [virtual]
Reimplemented from QWidget::sizeHint().
Returns the size hint for the current back end, if there is one, or else the size hint from QWidget.
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