QNativeGestureEvent class contains parameters that describe a gesture event. 更多...
| 头： | #include <QNativeGestureEvent> |
| qmake: | QT += gui |
| Since: | Qt 5.2 |
| 继承： | QInputEvent |
| QNativeGestureEvent (Qt::NativeGestureType type , const QPointF & localPos , const QPointF & windowPos , const QPointF & screenPos , qreal realValue , ulong sequenceId , quint64 intValue ) | |
| Qt::NativeGestureType | gestureType () const |
| const QPoint | globalPos () const |
| const QPointF & | localPos () const |
| const QPoint | pos () const |
| const QPointF & | screenPos () const |
| qreal | value () const |
| const QPointF & | windowPos () const |
QNativeGestureEvent class contains parameters that describe a gesture event.
Native gesture events are generated by the operating system, typically by interpreting touch events. Gesture events are high-level events such as zoom or rotate.
| Event Type | 描述 | Touch equence |
|---|---|---|
| Qt::ZoomNativeGesture | Magnification delta in percent. | macOS: Two-finger pinch. |
| Qt::SmartZoomNativeGesture | 布尔放大状态。 | macOS: Two-finger douple tap (trackpad) / One-finger douple tap (magic mouse). |
| Qt::RotateNativeGesture | 旋转增量 (以度为单位)。 | macOS: Two-finger rotate. |
In addition, BeginNativeGesture and EndNativeGesture are sent before and after gesture event streams:
BeginNativeGesture ZoomNativeGesture ZoomNativeGesture ZoomNativeGesture EndNativeGesture
另请参阅 Qt::NativeGestureType and QGestureEvent .
Constructs a native gesture event of type type .
点 localPos , windowPos and screenPos specify the gesture position relative to the receiving widget or item, window, and screen, respectively.
realValue is the macOS event parameter, sequenceId and intValue are the Windows event parameters.
返回手势类型。
该函数在 Qt 5.2 引入。
Returns the position of the gesture as a QPointF in screen coordinates
该函数在 Qt 5.2 引入。
Returns the position of the gesture as a QPointF , relative to the widget or item that received the event.
该函数在 Qt 5.2 引入。
Returns the position of the mouse cursor, relative to the widget or item that received the event.
该函数在 Qt 5.2 引入。
Returns the position of the gesture as a QPointF in screen coordinates.
该函数在 Qt 5.2 引入。
Returns the gesture value. The value should be interpreted based on the gesture type. For example, a Zoom gesture provides a scale factor while a Rotate gesture provides a rotation delta.
该函数在 Qt 5.2 引入。
另请参阅 QNativeGestureEvent and gestureType ().
Returns the position of the gesture as a QPointF , relative to the window that received the event.
该函数在 Qt 5.2 引入。
