PinchEvent QML Type

For specifying information about a pinch event. 更多...

导入语句：

import QtQuick

• 所有成员列表，包括继承成员

特性

• accepted : bool
• angle : real
• center : QPointF
• point1 : QPointF
• point2 : QPointF
• pointCount : int
• previousAngle : real
• previousCenter : QPointF
• previousScale : real
• rotation : real
• scale : real
• startCenter : QPointF
• startPoint1 : QPointF
• startPoint2 : QPointF

详细描述

The PinchEvent type was added in QtQuick 1.1

The center , startCenter , previousCenter properties provide the center position between the two touch points.

The scale and previousScale properties provide the scale factor.

The angle , previousAngle and rotation properties provide the angle between the two points and the amount of rotation.

The point1 , point2 , startPoint1 , startPoint2 properties provide the positions of the touch points.

The accepted property may be set to false in the onPinchStarted handler if the gesture should not be handled.

另请参阅 PinchArea .

特性文档编制

[read-only] center : QPointF

[read-only] previousCenter : QPointF

[read-only] startCenter : QPointF

These properties hold the position of the center point between the two touch points.

• center is the current center point
• previousCenter is the center point of the previous event.
• startCenter is the center point when the gesture began