QPinchGesture ¶

概要 ¶

详细描述 ¶

A pinch gesture is a form of touch user input in which the user typically touches two points on the input device with a thumb and finger, before moving them closer together or further apart to change the scale factor, zoom, or level of detail of the user interface.

For an overview of gesture handling in Qt and information on using gestures in your applications, see the 在 Widget 和图形视图中的手势 文档。

Instead of repeatedly applying the same pinching gesture, the user may continue to touch the input device in one place, and apply a second touch to a new point, continuing the gesture. When this occurs, gesture events will continue to be delivered to the target object, containing an instance of QPinchGesture 在 GestureUpdated 状态。

另请参阅

QPanGesture QSwipeGesture

class QPinchGesture ( [ parent=None ] ) ¶

参数

parent – QObject

PySide2.QtWidgets.QPinchGesture. ChangeFlag ¶

This enum describes the changes that can occur to the properties of the gesture object.

常量	描述
QPinchGesture.ScaleFactorChanged	The scale factor held by scaleFactor 改变。
QPinchGesture.RotationAngleChanged	The rotation angle held by rotationAngle 改变。
QPinchGesture.CenterPointChanged	The center point held by centerPoint 改变。

另请参阅

changeFlags totalChangeFlags

PySide2.QtWidgets.QPinchGesture. centerPoint ( ) ¶

返回类型

QPointF

另请参阅

setCenterPoint()

PySide2.QtWidgets.QPinchGesture. changeFlags ( ) ¶

返回类型

ChangeFlags

另请参阅

setChangeFlags()

PySide2.QtWidgets.QPinchGesture. lastCenterPoint ( ) ¶

返回类型

QPointF

另请参阅

setLastCenterPoint()

PySide2.QtWidgets.QPinchGesture. lastRotationAngle ( ) ¶

返回类型

qreal

另请参阅

setLastRotationAngle()

PySide2.QtWidgets.QPinchGesture. lastScaleFactor ( ) ¶

返回类型

qreal

另请参阅

setLastScaleFactor()

PySide2.QtWidgets.QPinchGesture. rotationAngle ( ) ¶

返回类型

qreal

另请参阅

setRotationAngle()

PySide2.QtWidgets.QPinchGesture. scaleFactor ( ) ¶

返回类型

qreal

另请参阅

setScaleFactor()

PySide2.QtWidgets.QPinchGesture. setCenterPoint ( value ) ¶

参数

value – QPointF

另请参阅

centerPoint()

PySide2.QtWidgets.QPinchGesture. setChangeFlags ( value ) ¶

参数

value – ChangeFlags

另请参阅

changeFlags()

PySide2.QtWidgets.QPinchGesture. setLastCenterPoint ( value ) ¶

参数

value – QPointF

另请参阅

lastCenterPoint()

PySide2.QtWidgets.QPinchGesture. setLastRotationAngle ( value ) ¶

参数

value – qreal

另请参阅

lastRotationAngle()

PySide2.QtWidgets.QPinchGesture. setLastScaleFactor ( value ) ¶

参数

value – qreal

另请参阅

lastScaleFactor()

PySide2.QtWidgets.QPinchGesture. setRotationAngle ( value ) ¶

参数

value – qreal

另请参阅

rotationAngle()

PySide2.QtWidgets.QPinchGesture. setScaleFactor ( value ) ¶

参数

value – qreal

另请参阅

scaleFactor()

PySide2.QtWidgets.QPinchGesture. setStartCenterPoint ( value ) ¶

参数

value – QPointF

另请参阅

startCenterPoint()

PySide2.QtWidgets.QPinchGesture. setTotalChangeFlags ( value ) ¶

参数

value – ChangeFlags

另请参阅

totalChangeFlags()

PySide2.QtWidgets.QPinchGesture. setTotalRotationAngle ( value ) ¶

参数

value – qreal

另请参阅

totalRotationAngle()

PySide2.QtWidgets.QPinchGesture. setTotalScaleFactor ( value ) ¶

参数

value – qreal

另请参阅

totalScaleFactor()

PySide2.QtWidgets.QPinchGesture. startCenterPoint ( ) ¶

返回类型

QPointF

另请参阅

setStartCenterPoint()

PySide2.QtWidgets.QPinchGesture. totalChangeFlags ( ) ¶

返回类型

ChangeFlags

另请参阅

setTotalChangeFlags()

PySide2.QtWidgets.QPinchGesture. totalRotationAngle ( ) ¶

返回类型

qreal

另请参阅

setTotalRotationAngle()

PySide2.QtWidgets.QPinchGesture. totalScaleFactor ( ) ¶

返回类型

qreal

另请参阅

setTotalScaleFactor()