The QCameraZoomControl class supplies control for optical and digital camera zoom. More...
| Header: | #include <QCameraZoomControl> |
| qmake: | QT += multimedia |
| Inherits: | QMediaControl |
| virtual | ~QCameraZoomControl() |
| virtual qreal | currentDigitalZoom() const = 0 |
| virtual qreal | currentOpticalZoom() const = 0 |
| virtual qreal | maximumDigitalZoom() const = 0 |
| virtual qreal | maximumOpticalZoom() const = 0 |
| virtual qreal | requestedDigitalZoom() const = 0 |
| virtual qreal | requestedOpticalZoom() const = 0 |
| virtual void | zoomTo(qreal optical, qreal digital) = 0 |
| void | currentDigitalZoomChanged(qreal zoom) |
| void | currentOpticalZoomChanged(qreal zoom) |
| void | maximumDigitalZoomChanged(qreal zoom) |
| void | maximumOpticalZoomChanged(qreal zoom) |
| void | requestedDigitalZoomChanged(qreal zoom) |
| void | requestedOpticalZoomChanged(qreal zoom) |
| QCameraZoomControl(QObject *parent = nullptr) |
The QCameraZoomControl class supplies control for optical and digital camera zoom.
The interface name of QCameraZoomControl is org.qt-project.qt.camerazoomcontrol/5.0 as defined in QCameraZoomControl_iid.
See also QMediaService::requestControl() and QCamera.
[protected] QCameraZoomControl::QCameraZoomControl(QObject *parent = nullptr)Constructs a camera zoom control object with parent.
[virtual] QCameraZoomControl::~QCameraZoomControl()Destruct the camera zoom control object.
[pure virtual] qreal
QCameraZoomControl::currentDigitalZoom() constReturn the current digital zoom value.
[signal] void QCameraZoomControl::currentDigitalZoomChanged(qreal zoom)Signal emitted when the current digital zoom value changed.
[pure virtual] qreal
QCameraZoomControl::currentOpticalZoom() constReturn the current optical zoom value.
[signal] void QCameraZoomControl::currentOpticalZoomChanged(qreal zoom)Signal emitted when the current optical zoom value changed.
[pure virtual] qreal
QCameraZoomControl::maximumDigitalZoom() constReturns the maximum digital zoom value, or 1.0 if digital zoom is not supported.
[signal] void QCameraZoomControl::maximumDigitalZoomChanged(qreal zoom)Signal emitted when the maximum supported digital zoom value changed.
The maximum supported zoom value can depend on other camera settings, like capture mode or resolution.
[pure virtual] qreal
QCameraZoomControl::maximumOpticalZoom() constReturns the maximum optical zoom value, or 1.0 if optical zoom is not supported.
[signal] void QCameraZoomControl::maximumOpticalZoomChanged(qreal zoom)Signal emitted when the maximum supported optical zoom value changed.
The maximum supported zoom value can depend on other camera settings, like focusing mode.
[pure virtual] qreal
QCameraZoomControl::requestedDigitalZoom() constReturn the requested digital zoom value.
[signal] void QCameraZoomControl::requestedDigitalZoomChanged(qreal zoom)Signal emitted when the requested digital zoom value changed.
[pure virtual] qreal
QCameraZoomControl::requestedOpticalZoom() constReturn the requested optical zoom value.
[signal] void QCameraZoomControl::requestedOpticalZoomChanged(qreal zoom)Signal emitted when the requested optical zoom value changed.
[pure virtual] void QCameraZoomControl::zoomTo(qreal optical, qreal digital)Sets optical and digital zoom values.
Zooming can be asynchronous with value changes reported with currentDigitalZoomChanged() and currentOpticalZoomChanged() signals.
The backend should expect and correctly handle frequent zoomTo() calls during zoom animations or slider movements.
org.qt-project.qt.camerazoomcontrol/5.0
Defines the interface name of the QCameraZoomControl class.
