PinchEvent QML Type
For specifying information about a pinch event. More...
Import Statement: | import QtQuick |
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
center : QPointF |
previousCenter : QPointF |
startCenter : QPointF |
These properties hold the position of the center point between the two touch points.
center
is the current center pointpreviousCenter
is the center point of the previous event.startCenter
is the center point when the gesture began
These properties hold the scale factor determined by the change in distance between the two touch points.
scale
is the current scale factor.previousScale
is the scale factor of the previous event.
When a pinch gesture is started, the scale is 1.0
.
These properties hold the angle between the two touch points.
angle
is the current angle between the two points in the range -180 to 180.previousAngle
is the angle of the previous event.rotation
is the total rotation since the pinch gesture started.
When a pinch gesture is started, the rotation is 0.0
.
point1 : QPointF |
point2 : QPointF |
startPoint1 : QPointF |
startPoint2 : QPointF |
These properties provide the actual touch points generating the pinch.
point1
andpoint2
hold the current positions of the points.startPoint1
andstartPoint2
hold the positions of the points when the second point was touched.
accepted : bool |
Setting this property to false in the PinchArea::onPinchStarted
handler will result in no further pinch events being generated, and the gesture ignored.
pointCount : int |
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.
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