QGesture ¶

函数 ¶

手势特性 ¶

The class has a list of properties that can be queried by the user to get some gesture-specific arguments. For example, the pinch gesture has a scale factor that is exposed as a property.

Developers of custom gesture recognizers can add additional properties in order to provide additional information about a gesture. This can be done by adding new dynamic properties to a QGesture object, or by subclassing the QGesture class (or one of its subclasses).

手势对象的生命周期 ¶

A QGesture instance is implicitly created when needed and is owned by Qt. Developers should never destroy them or store them for later use as Qt may destroy particular instances of them and create new ones to replace them.

The registered gesture recognizer monitors the input events for the target object via its recognize() function, updating the properties of the gesture object as required.

The gesture object may be delivered to the target object in a QGestureEvent if the corresponding gesture is active or has just been canceled. Each event that is delivered contains a list of gesture objects, since support for more than one gesture may be enabled for the target object. Due to the way events are handled in Qt, gesture events may be filtered by other objects.

另请参阅

QGestureEvent QGestureRecognizer

class QGesture ( [ parent=None ] ) ¶

param parent

QObject

构造新的手势对象采用给定 parent .

QGesture objects are created by gesture recognizers in the create() 函数。

PySide2.QtWidgets.QGesture. GestureCancelPolicy ¶

This enum describes how accepting a gesture can cancel other gestures automatically.

常量	描述
QGesture.CancelNone	On accepting this gesture no other gestures will be affected.
QGesture.CancelAllInContext	On accepting this gesture all gestures that are active in the context (respecting the GestureFlag that were specified when subscribed to the gesture) will be cancelled.

PySide2.QtWidgets.QGesture. gestureCancelPolicy ( ) ¶

返回类型

GestureCancelPolicy

另请参阅

setGestureCancelPolicy()

PySide2.QtWidgets.QGesture. gestureType ( ) ¶

返回类型

GestureType

PySide2.QtWidgets.QGesture. hasHotSpot ( ) ¶

返回类型

bool

PySide2.QtWidgets.QGesture. hotSpot ( ) ¶

返回类型

QPointF

另请参阅

setHotSpot()

PySide2.QtWidgets.QGesture. setGestureCancelPolicy ( policy ) ¶

参数

policy – GestureCancelPolicy

另请参阅

gestureCancelPolicy()

PySide2.QtWidgets.QGesture. setHotSpot ( value ) ¶

参数

value – QPointF

另请参阅

hotSpot()

PySide2.QtWidgets.QGesture. state ( ) ¶

返回类型

GestureState

PySide2.QtWidgets.QGesture. unsetHotSpot ( ) ¶