AlignTransitionModifier class

Animated version of an Align that animates its Align.alignment property.

Here's an illustration of the DecoratedBoxTransition widget, with it's DecoratedBoxTransition.decoration animated by a CurvedAnimation set to Curves.decelerate:

{@tool dartpad} The following code implements the AlignTransition as seen in the video above:

** See code in examples/api/lib/widgets/transitions/align_transition.0.dart ** {@end-tool}

See also:

  • AnimatedAlign, which animates changes to the alignment without taking an explicit Animation argument.
  • 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.
  • SlideTransition, a widget that animates the position of a widget relative to its normal position.
Inheritance
Available extensions

Constructors

AlignTransitionModifier({Key? key, Widget? child, Key? modifierKey, required Animation<AlignmentGeometry> alignment, double? widthFactor, double? heightFactor})
Creates an animated Align whose AlignmentGeometry animation updates the widget.
const

Properties

alignment → Animation<AlignmentGeometry>
The animation that controls the child's alignment.
final
hashCode → int
The hash code for this object.
no setterinherited
heightFactor → double?
If non-null, the child's height factor, see Align.heightFactor.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
modifierKey → Key?
The actual key of the widget, which Modifier wrapped
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
widthFactor → double?
If non-null, the child's width factor, see Align.widthFactor.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
buildWithChild(BuildContext context, Widget? child) → Widget
A build method that receives an extra child parameter.
override
createElement() → SingleChildStatelessElement
Create a SingleChildStatelessElement
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
modified() → Modifier

Available on Widget, provided by the ModifierTransformer extension

Transform normal widget to Modifier
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