PinchEvent QML Type
For specifying information about a pinch event. More...
| Import Statement: | import QtQuick 2.15 |
Properties
- 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
Detailed Description
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.
See also PinchArea.
Property Documentation
These properties provide the actual touch points generating the pinch.
point1andpoint2hold the current positions of the points.startPoint1andstartPoint2hold the positions of the points when the second point was touched.
These properties hold the angle between the two touch points.
angleis the current angle between the two points in the range -180 to 180.previousAngleis the angle of the previous event.rotationis the total rotation since the pinch gesture started.
When a pinch gesture is started, the rotation is 0.0.
These properties hold the scale factor determined by the change in distance between the two touch points.
scaleis the current scale factor.previousScaleis the scale factor of the previous event.
When a pinch gesture is started, the scale is 1.0.
These properties hold the position of the center point between the two touch points.
centeris the current center pointpreviousCenteris the center point of the previous event.startCenteris the center point when the gesture began
Setting this property to false in the PinchArea::onPinchStarted handler will result in no further pinch events being generated, and the gesture ignored.
Holds the number of points currently touched. The PinchArea will not react until two touch points have initited a gesture, but will remain active until all touch points have been released.