QPropertyAnimation¶
The
QPropertyAnimation
class animates Qt properties. More…
New in version 4.6.
Synopsis¶
Functions¶
def
propertyName
()def
setPropertyName
(propertyName)def
setTargetObject
(target)def
targetObject
()
Detailed Description¶
QPropertyAnimation
interpolates over Qt properties . As property values are stored inQVariant
s, the class inheritsQVariantAnimation
, and supports animation of the samemeta types
as its super class.A class declaring properties must be a
QObject
. To make it possible to animate a property, it must provide a setter (so thatQPropertyAnimation
can set the property’s value). Note that this makes it possible to animate many of Qt’s widgets. Let’s look at an example:QPropertyAnimation *animation = new QPropertyAnimation(myWidget, "geometry"); animation->setDuration(10000); animation->setStartValue(QRect(0, 0, 100, 30)); animation->setEndValue(QRect(250, 250, 100, 30)); animation->start();The property name and the
QObject
instance of which property should be animated are passed to the constructor. You can then specify the start and end value of the property. The procedure is equal for properties in classes you have implemented yourself–just check withQVariantAnimation
that yourQVariant
type is supported.The
QVariantAnimation
class description explains how to set up the animation in detail. Note, however, that if a start value is not set, the property will start at the value it had when theQPropertyAnimation
instance was created.
QPropertyAnimation
works like a charm on its own. For complex animations that, for instance, contain several objects,QAnimationGroup
is provided. An animation group is an animation that can contain other animations, and that can manage when its animations are played. Look atQParallelAnimationGroup
for an example.
- class PySide2.QtCore.QPropertyAnimation([parent=None])¶
PySide2.QtCore.QPropertyAnimation(target, propertyName[, parent=None])
- param parent:
- param target:
- param propertyName:
Construct a
QPropertyAnimation
object.parent
is passed toQObject
‘s constructor.Construct a
QPropertyAnimation
object.parent
is passed toQObject
‘s constructor. The animation changes the propertypropertyName
ontarget
. The default duration is 250ms.See also
- PySide2.QtCore.QPropertyAnimation.propertyName()¶
- Return type:
This property holds the target property name for this animation.
This property defines the target property name for this animation. The property name is required for the animation to operate.
- PySide2.QtCore.QPropertyAnimation.setPropertyName(propertyName)¶
- Parameters:
propertyName –
PySide2.QtCore.QByteArray
This property holds the target property name for this animation.
This property defines the target property name for this animation. The property name is required for the animation to operate.
- PySide2.QtCore.QPropertyAnimation.setTargetObject(target)¶
- Parameters:
target –
PySide2.QtCore.QObject
This property holds the target
QObject
for this animation..This property defines the target
QObject
for this animation.
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