QCameraControl Class Reference

Member Function Documentation

QCameraControl::QCameraControl ( QObject * parent = 0 ) [protected]

Constructs a camera control object with parent.

QCameraControl::~QCameraControl ()

Destruct the camera control object.

bool QCameraControl::canChangeProperty ( PropertyChangeType changeType, QCamera::Status status ) const [pure virtual]

Returns true if backend can effectively apply changing camera properties of changeType type while the camera state is QCamera::Active and camera status matches status parameter.

If backend doesn't support applying this change in the active state, it will be stopped before the settings are changed and restarted after. Otherwise the backend should apply the change in the current state, with the camera status indicating the progress, if necessary.

This function was introduced in Qt Mobility 1.1.

QCamera::CaptureMode QCameraControl::captureMode () const [pure virtual]

Returns the current capture mode.

This function was introduced in Qt Mobility 1.1.

See also setCaptureMode().

void QCameraControl::captureModeChanged ( QCamera::CaptureMode mode ) [signal]

Signal emitted when the camera capture mode changes.

This function was introduced in Qt Mobility 1.1.

void QCameraControl::error ( int error, const QString & errorString ) [signal]

Signal emitted when an error occurs with error code error and a description of the error errorString.

This function was introduced in Qt Mobility 1.1.

bool QCameraControl::isCaptureModeSupported ( QCamera::CaptureMode mode ) const [pure virtual]

Returns true if the capture mode is suported.

This function was introduced in Qt Mobility 1.1.

void QCameraControl::setCaptureMode ( QCamera::CaptureMode mode ) [pure virtual]

Sets the current capture mode.

The capture mode changes are synchronous and allowed in any camera state.

If the capture mode is changed while camera is active, it's recommended to change status to QCamera::LoadedStatus and start activating the camera in the next event loop with the status changed to QCamera::StartingStatus. This allows the capture settings to be applied before camera is started. Than change the status to QCamera::StartedStatus when the capture mode change is done.

This function was introduced in Qt Mobility 1.1.

See also captureMode().

void QCameraControl::setState ( QCamera::State state ) [pure virtual]

Sets the camera state.

State changes are synchronous and indicate user intention, while camera status is used as a feedback mechanism to inform application about backend status. Status changes are reported asynchronously with QCameraControl::statusChanged() signal.

This function was introduced in Qt Mobility 1.1.

See also state() and QCamera::State.

QCamera::State QCameraControl::state () const [pure virtual]

Returns the state of the camera service.

This function was introduced in Qt Mobility 1.1.

See also setState() and QCamera::state.

void QCameraControl::stateChanged ( QCamera::State state ) [signal]

Signal emitted when the camera state changes.

In most cases the state chage is caused by QCameraControl::setState(), but if critical error has occurred the state changes to QCamera::UnloadedState.

This function was introduced in Qt Mobility 1.1.

QCamera::Status QCameraControl::status () const [pure virtual]

Returns the status of the camera service.

This function was introduced in Qt Mobility 1.1.

See also QCamera::state.

void QCameraControl::statusChanged ( QCamera::Status status ) [signal]

Signal emitted when the camera status changes.

This function was introduced in Qt Mobility 1.1.