Phased<T> class
abstract
The base class for a Phased widget. Override it to create custom, phased based animations.
Example:
class BlinkState extends PhasedState<bool> {
BlinkState() : super(values: [true, false]);
}
class Blink extends Phased<bool> {
const Blink({
super.key,
required super.state,
required this.child,
});
final Widget child;
@override
Widget build(BuildContext context) {
return AnimatedOpacity(
opacity: state.phaseValue(
values: const {true: 1},
defaultValue: 0,
),
onEnd: state.next,
duration: const Duration(milliseconds: 250),
child: child,
);
}
}
- Inheritance
Constructors
-
Phased({Key? key, required PhasedState<
T> state}) -
The base class for a Phased widget. Override it to create custom, phased
based animations.
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
state
→ PhasedState<
T> -
State of the widget.
final
Methods
-
build(
BuildContext context) → Widget - Override to build the animation.
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< Phased< T> > -
Creates the mutable state for this widget at a given location in the tree.
override
-
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}) → 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