StretchBarsIndicator class

An animated loading indicator with three bars that stretch vertically then horizontally.

Three square bars alternate between stretching into vertical lines (expanding and collapsing) and horizontal lines (expanding and collapsing). Bars maintain their center position while stretching in both directions, creating a pulsing effect.

Example:

StretchBarsIndicator(
  size: 80,
  color: Colors.amber,
  duration: Duration(milliseconds: 1200),
  borderRadius: 3,
)
Inheritance

Constructors

StretchBarsIndicator({Key? key, double size = 60, Color color = Colors.black, Duration duration = const Duration(seconds: 1), double borderRadius = 0})
Creates a stretch bars loading indicator.
const

Properties

borderRadius → double
The border radius for rounding the corners of each bar.
final
color → Color
The color of the animated bars.
final
duration → Duration
The duration of one complete animation cycle (vertical stretch, horizontal stretch).
final
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
size → double
The width and height of the indicator (creates a square).
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<StretchBarsIndicator>
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, 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