ScaleTransition class

Animates the scale of a transformed widget.

Here's an illustration of the ScaleTransition widget, with it's scale animated by a CurvedAnimation set to Curves.fastOutSlowIn:

The following code implements the ScaleTransition as seen in the video above:
link

To create a local project with this code sample, run:
flutter create --sample=widgets.ScaleTransition.1 mysample

See also:

  • PositionedTransition, a widget that animates its child from a start position to an end position over the lifetime of the animation.
  • RelativePositionedTransition, a widget that transitions its child's position based on the value of a rectangle relative to a bounding box.
  • SizeTransition, a widget that animates its own size and clips and aligns its child.
Inheritance

Constructors

ScaleTransition({Key? key, required Animation<double> scale, Alignment alignment = Alignment.center, FilterQuality? filterQuality, Widget? child})
Creates a scale transition.
const

Properties

alignment → Alignment
The alignment of the origin of the coordinate system in which the transform takes place, relative to the size of the box.
finalinherited
animation → Animation<double>
The animation that controls the matrix of the child.
no setterinherited
child → Widget?
The widget below this widget in the tree.
finalinherited
filterQuality → FilterQuality?
The filter quality with which to apply the transform as a bitmap operation.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
listenable → Listenable
The Listenable to which this widget is listening.
finalinherited
onTransform → TransformCallback
The callback to compute a Matrix4 from the animation. It's called every time animation changes its value.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scale → Animation<double>
The animation that controls the scale of the child.
no setter

Methods

build(BuildContext context) → Widget
Override this method to build widgets that depend on the state of the listenable (e.g., the current value of the animation).
inherited
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<AnimatedWidget>
Subclasses typically do not override this method.
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited