QCameraFlashControl Class
The QCameraFlashControl class allows controlling a camera's flash. 更多...
| 头文件: | #include <QCameraFlashControl> |
| qmake: | QT += multimedia |
| 基类: | QMediaControl |
公有函数
| ~QCameraFlashControl() | |
| virtual QCameraExposure::FlashModes | flashMode() const = 0 |
| virtual bool | isFlashModeSupported(QCameraExposure::FlashModes mode) const = 0 |
| virtual bool | isFlashReady() const = 0 |
| virtual void | setFlashMode(QCameraExposure::FlashModes mode) = 0 |
- 32 个公有函数继承自 QObject
信号
| void | flashReady(bool ready) |
- 2 个信号继承自 QObject
受保护的函数
| QCameraFlashControl(QObject *parent = Q_NULLPTR) |
- 9 个受保护的函数继承自 QObject
Macros
其他继承的成员
详细描述
The QCameraFlashControl class allows controlling a camera's flash.
You can set the type of flash effect used when an image is captured, and test to see if the flash hardware is ready to fire.
You can retrieve this control from the camera object in the usual way:
Some camera devices may not have flash hardware, or may not be configurable. In that case, there will be no QCameraFlashControl available.
The interface name of QCameraFlashControl is org.qt-project.qt.cameraflashcontrol/5.0 as defined in QCameraFlashControl_iid.
参见 QCamera.
成员函数
[protected] QCameraFlashControl::QCameraFlashControl(QObject *parent = Q_NULLPTR)
Constructs a camera flash control object with parent.
QCameraFlashControl::~QCameraFlashControl()
Destroys the camera control object.
[pure virtual] QCameraExposure::FlashModes QCameraFlashControl::flashMode() const
Returns the current flash mode.
参见 setFlashMode().
[signal] void QCameraFlashControl::flashReady(bool ready)
Signal emitted when flash state changes to ready.
[pure virtual] bool QCameraFlashControl::isFlashModeSupported(QCameraExposure::FlashModes mode) const
Return true if the reqested flash mode is supported. Some QCameraExposure::FlashMode values can be combined, for example QCameraExposure::FlashManual | QCameraExposure::FlashSlowSyncRearCurtain
[pure virtual] bool QCameraFlashControl::isFlashReady() const
Returns true if flash is charged.
[pure virtual] void QCameraFlashControl::setFlashMode(QCameraExposure::FlashModes mode)
Set the current flash mode.
Usually a single QCameraExposure::FlashMode flag is used, but some non conflicting flags combination are also allowed, like QCameraExposure::FlashManual | QCameraExposure::FlashSlowSyncRearCurtain.
参见 flashMode().
宏
QCameraFlashControl_iid
org.qt-project.qt.cameraflashcontrol/5.0
Defines the interface name of the QCameraFlashControl class.