QML GestureArea Element

The GestureArea item enables simple gesture handling. More...

Inherits Item

• List of all members, including inherited members

Detailed Description

A GestureArea is like a MouseArea, but it has signals for gesture events.

Warning: Elements in the Qt.labs module are not guaranteed to remain compatible in future versions.

Warning: GestureArea is an experimental element whose development has been discontinued. PinchArea is available in QtQuick 1.1 and handles two finger gesture input.

Note: This element is only functional on devices with touch input.

 import Qt.labs.gestures 1.0

 GestureArea {
     anchors.fill: parent
  // onPan:        ... gesture.acceleration ...
  // onPinch:      ... gesture.rotationAngle ...
  // onSwipe:      ...
  // onTapAndHold: ...
  // onTap:        ...
  // onGesture:    ...
 }

Each signal has a gesture parameter that has the properties of the gesture.

Signal	Type	Property	Description
onTap	point	position	the position of the tap
onTapAndHold	point	position	the position of the tap
onPan	real	acceleration	the acceleration of the pan
onPan	point	delta	the offset from the previous input position to the current input
onPan	point	offset	the total offset from the first input position to the current input position
onPan	point	lastOffset	the previous value of offset
onPinch	point	centerPoint	the midpoint between the two input points
onPinch	point	lastCenterPoint	the previous value of centerPoint
onPinch	point	startCenterPoint	the first value of centerPoint
onPinch	real	rotationAngle	the angle covered by the gesture motion
onPinch	real	lastRotationAngle	the previous value of rotationAngle
onPinch	real	totalRotationAngle	the complete angle covered by the gesture
onPinch	real	scaleFactor	the change in distance between the two input points
onPinch	real	lastScaleFactor	the previous value of scaleFactor
onPinch	real	totalScaleFactor	the complete scale factor of the gesture
onSwipe	real	swipeAngle	the angle of the swipe

Custom gestures, handled by onGesture, will have custom properties.

GestureArea is an invisible item: it is never painted.

See also MouseArea.