QNativeGestureEvent Class
The QNativeGestureEvent class contains parameters that describe a gesture event. 更多...
| 头文件: | #include <QNativeGestureEvent> |
| qmake: | QT += gui |
| 开始支持版本: | Qt 5.2 |
| 基类: | QInputEvent |
公有函数
| 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 |
- 2 个公有函数继承自 QInputEvent
- 6 个公有函数继承自 QEvent
其他继承的成员
详细描述
The 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 | Description | Touch equence |
|---|---|---|
| Qt::ZoomNativeGesture | Magnification delta in percent. | macOS: Two-finger pinch. |
| Qt::SmartZoomNativeGesture | Boolean magnification state. | macOS: Two-finger douple tap (trackpad) / One-finger douple tap (magic mouse). |
| Qt::RotateNativeGesture | Rotation delta in degrees. | macOS: Two-finger rotate. |
In addition, BeginNativeGesture and EndNativeGesture are sent before and after gesture event streams:
BeginNativeGesture ZoomNativeGesture ZoomNativeGesture ZoomNativeGesture EndNativeGesture
参见 Qt::NativeGestureType and QGestureEvent.
成员函数
QNativeGestureEvent::QNativeGestureEvent(Qt::NativeGestureType type, const QPointF &localPos, const QPointF &windowPos, const QPointF &screenPos, qreal realValue, ulong sequenceId, quint64 intValue)
Constructs a native gesture event of type type.
The points 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.
Qt::NativeGestureType QNativeGestureEvent::gestureType() const
Returns the gesture type.
This function was introduced in Qt 5.2.
const QPoint QNativeGestureEvent::globalPos() const
Returns the position of the gesture as a QPointF in screen coordinates
This function was introduced in Qt 5.2.
const QPointF &QNativeGestureEvent::localPos() const
Returns the position of the gesture as a QPointF, relative to the widget or item that received the event.
This function was introduced in Qt 5.2.
const QPoint QNativeGestureEvent::pos() const
Returns the position of the mouse cursor, relative to the widget or item that received the event.
This function was introduced in Qt 5.2.
const QPointF &QNativeGestureEvent::screenPos() const
Returns the position of the gesture as a QPointF in screen coordinates.
This function was introduced in Qt 5.2.
qreal QNativeGestureEvent::value() const
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.
This function was introduced in Qt 5.2.
参见 QNativeGestureEvent and gestureType().
const QPointF &QNativeGestureEvent::windowPos() const
Returns the position of the gesture as a QPointF, relative to the window that received the event.
This function was introduced in Qt 5.2.