QCameraFocusControl Class

成员函数

[protected] QCameraFocusControl::QCameraFocusControl(QObject *parent = Q_NULLPTR)

Constructs a camera control object with parent.

QCameraFocusControl::~QCameraFocusControl()

Destruct the camera control object.

[pure virtual] QPointF QCameraFocusControl::customFocusPoint() const

Return the position of custom focus point, in relative frame coordinates: QPointF(0,0) points to the left top frame point, QPointF(0.5,0.5) points to the frame center.

Custom focus point is used only in FocusPointCustom focus mode.

参见 setCustomFocusPoint().

[signal] void QCameraFocusControl::customFocusPointChanged(const QPointF &point)

Signal is emitted when the custom focus point is changed.

参见 QCameraFocusControl::customFocusPoint() and QCameraFocusControl::setCustomFocusPoint().

[pure virtual] QCameraFocus::FocusModes QCameraFocusControl::focusMode() const

Returns the focus mode being used.

参见 setFocusMode().

[signal] void QCameraFocusControl::focusModeChanged(QCameraFocus::FocusModes mode)

Signal is emitted when the focus mode is changed, usually in result of QCameraFocusControl::setFocusMode call or capture mode changes.

参见 QCameraFocusControl::focusMode() and QCameraFocusControl::setFocusMode().

[pure virtual] QCameraFocus::FocusPointMode QCameraFocusControl::focusPointMode() const

Returns the camera focus point selection mode.

参见 setFocusPointMode().

[signal] void QCameraFocusControl::focusPointModeChanged(QCameraFocus::FocusPointMode mode)

Signal is emitted when the focus point mode is changed, usually in result of QCameraFocusControl::setFocusPointMode call or capture mode changes.

参见 QCameraFocusControl::focusPointMode() and QCameraFocusControl::setFocusPointMode().

[pure virtual] QCameraFocusZoneList QCameraFocusControl::focusZones() const

Returns the list of zones, the camera is using for focusing or focused on.

[signal] void QCameraFocusControl::focusZonesChanged()

Signal is emitted when the set of zones, camera focused on is changed.

Usually the zones list is changed when the camera is focused.

参见 QCameraFocusControl::focusZones().

[pure virtual] bool QCameraFocusControl::isFocusModeSupported(QCameraFocus::FocusModes mode) const

Returns true if focus mode is supported.

[pure virtual] bool QCameraFocusControl::isFocusPointModeSupported(QCameraFocus::FocusPointMode mode) const

Returns true if the camera focus point mode is supported.

[pure virtual] void QCameraFocusControl::setCustomFocusPoint(const QPointF &point)

Sets the custom focus point.

If camera supports fixed set of focus points, it should use the nearest supported focus point, and return the actual focus point with QCameraFocusControl::focusZones().

参见 QCameraFocusControl::customFocusPoint() and QCameraFocusControl::focusZones().

[pure virtual] void QCameraFocusControl::setFocusMode(QCameraFocus::FocusModes mode)

Set the focus mode to mode.

参见 focusMode().

[pure virtual] void QCameraFocusControl::setFocusPointMode(QCameraFocus::FocusPointMode mode)

Sets the camera focus point selection mode.

参见 focusPointMode().