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QPinchGesture Class Reference
^{^{[QtGui module]}}

The QPinchGesture class describes a pinch gesture made my the user. More...

Inherits QGesture.

Types

enum ChangeFlag { ScaleFactorChanged, RotationAngleChanged, CenterPointChanged }
class ChangeFlags

Methods

__init__ (self, QObject parent = None)
QPointF centerPoint (self)
ChangeFlags changeFlags (self)
QPointF lastCenterPoint (self)
float lastRotationAngle (self)
float lastScaleFactor (self)
float rotationAngle (self)
float scaleFactor (self)
setCenterPoint (self, QPointF)
setChangeFlags (self, ChangeFlags)
setLastCenterPoint (self, QPointF)
setLastRotationAngle (self, float)
setLastScaleFactor (self, float)
setRotationAngle (self, float)
setScaleFactor (self, float)
setStartCenterPoint (self, QPointF)
setTotalChangeFlags (self, ChangeFlags)
setTotalRotationAngle (self, float)
setTotalScaleFactor (self, float)
QPointF startCenterPoint (self)
ChangeFlags totalChangeFlags (self)
float totalRotationAngle (self)
float totalScaleFactor (self)

Detailed Description

The QPinchGesture class describes a pinch gesture made my the user.

A pinch gesture is a form of multitouch 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.

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 in the Qt.GestureUpdated state.

Type Documentation

QPinchGesture.ChangeFlag

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

Constant	Value	Description
`QPinchGesture.ScaleFactorChanged`	`0x1`	The scale factor held by scaleFactor changed.
`QPinchGesture.RotationAngleChanged`	`0x2`	The rotation angle held by rotationAngle changed.
`QPinchGesture.CenterPointChanged`	`0x4`	The center point held by centerPoint changed.