RadarScreen class

A full-screen radar widget with centered content, optional search results displayed in a circle, and a bottom action.

When results is provided and showResults is true, the result widgets appear around the center icon with a staggered scale + fade animation. Each result widget is positioned evenly on a circle of resultsRadius.

{@tool snippet}

// Searching state
RadarScreen(
  centerIcon: Icon(Icons.wifi, color: Colors.white, size: 28),
  label: 'Searching...',
  config: RadarEffectConfig.classic,
)

// Results found
RadarScreen(
  centerIcon: Icon(Icons.wifi, color: Colors.white, size: 28),
  label: 'Found 3 users',
  config: RadarEffectConfig.classic,
  showResults: true,
  resultsRadius: 130.0,
  results: [
    CircleAvatar(child: Text('A')),
    CircleAvatar(child: Text('B')),
    CircleAvatar(child: Text('C')),
  ],
)

{@end-tool}

Inheritance

Constructors

RadarScreen({Key? key, Widget? centerIcon, String? label, TextStyle? labelStyle, Widget? bottomAction, RadarEffectConfig config = RadarEffectConfig.green, GKController? controller, List<Widget> results = const [], bool showResults = false, double resultsRadius = 130.0, double resultSize = 56.0, Duration resultsAnimationDuration = const Duration(milliseconds: 800), double startAngle = -pi / 2})
Creates a RadarScreen.
const

Properties

bottomAction → Widget?
Widget positioned at the bottom (e.g. a cancel button).
final
centerIcon → Widget?
Widget displayed inside the center circle (e.g. an Icon).
final
config → RadarEffectConfig
Visual configuration for the radar.
final
controller → GKController?
Optional external GKController for the radar animation.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → String?
Text label shown below the center icon.
final
labelStyle → TextStyle?
Style for the label text.
final
results → List<Widget>
Widgets to display around the center when showResults is true.
final
resultsAnimationDuration → Duration
Total duration of the staggered results animation.
final
resultSize → double
The width and height allocated for each result widget.
final
resultsRadius → double
Distance from center to each result widget in logical pixels.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showResults → bool
Whether to show the results with a staggered animation.
final
startAngle → double
The angle (in radians) where the first result is placed.
final

Methods

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