QGesture¶
Inherited by: QPanGesture, QPinchGesture, QSwipeGesture, QTapAndHoldGesture, QTapGesture
New in version 4.6.
Synopsis¶
Functions¶
def
gestureCancelPolicy
()def
gestureType
()def
hasHotSpot
()def
hotSpot
()def
setGestureCancelPolicy
(policy)def
setHotSpot
(value)def
state
()def
unsetHotSpot
()
Detailed Description¶
Gesture objects are not constructed directly by developers. They are created by the
QGestureRecognizer
object that is registered with the application; seeregisterRecognizer()
.For an overview of gesture handling in Qt and information on using gestures in your applications, see the Gestures in Widgets and Graphics View document.
Gesture Properties¶
The class has a list of properties that can be queried by the user to get some gesture-specific arguments. For example, the pinch gesture has a scale factor that is exposed as a property.
Developers of custom gesture recognizers can add additional properties in order to provide additional information about a gesture. This can be done by adding new dynamic properties to a
QGesture
object, or by subclassing theQGesture
class (or one of its subclasses).
Lifecycle of a Gesture Object¶
A
QGesture
instance is implicitly created when needed and is owned by Qt. Developers should never destroy them or store them for later use as Qt may destroy particular instances of them and create new ones to replace them.The registered gesture recognizer monitors the input events for the target object via its
recognize()
function, updating the properties of the gesture object as required.The gesture object may be delivered to the target object in a
QGestureEvent
if the corresponding gesture is active or has just been canceled. Each event that is delivered contains a list of gesture objects, since support for more than one gesture may be enabled for the target object. Due to the way events are handled in Qt, gesture events may be filtered by other objects.See also
-
class
QGesture
([parent=None])¶ - param parent
QObject
Constructs a new gesture object with the given
parent
.QGesture
objects are created by gesture recognizers in thecreate()
function.
-
PySide2.QtWidgets.QGesture.
GestureCancelPolicy
¶ This enum describes how accepting a gesture can cancel other gestures automatically.
Constant
Description
QGesture.CancelNone
On accepting this gesture no other gestures will be affected.
QGesture.CancelAllInContext
On accepting this gesture all gestures that are active in the context (respecting the
GestureFlag
that were specified when subscribed to the gesture) will be cancelled.
-
PySide2.QtWidgets.QGesture.
gestureCancelPolicy
()¶ - Return type
See also
-
PySide2.QtWidgets.QGesture.
gestureType
()¶ - Return type
GestureType
-
PySide2.QtWidgets.QGesture.
hasHotSpot
()¶ - Return type
bool
-
PySide2.QtWidgets.QGesture.
hotSpot
()¶ - Return type
QPointF
See also
-
PySide2.QtWidgets.QGesture.
setGestureCancelPolicy
(policy)¶ - Parameters
policy –
GestureCancelPolicy
See also
-
PySide2.QtWidgets.QGesture.
state
()¶ - Return type
GestureState
-
PySide2.QtWidgets.QGesture.
unsetHotSpot
()¶
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