FluentBadge class

A Fluent 2 badge: a small, non-interactive status or count marker.

FluentBadge(
  color: FluentBadgeColor.danger,
  appearance: FluentBadgeAppearance.tint,
  icon: const Icon(FluentIcons.alert_20_filled),
  child: const Text('9'),
)

Both icon and child are optional; with neither, the badge is a bare dot sized to its own height.

It is a marker, not a control: there is no onPressed, no focus ring, and no hover, pressed or disabled treatment, because Fluent ships no such tokens for Badge. Wrap it in your own gesture surface if a badge has to be tappable, so the affordance is visible in the call site rather than hidden in here.

Customisation follows the same three rungs as FluentButton. style is merged last and wins; FluentBadgeTheme restyles a subtree; and resolveFluentBadgeState, resolveFluentBadgeStyle and buildFluentBadge are public so any one of them can be replaced without forking this widget.

Inheritance

Constructors

FluentBadge({Key? key, Widget? child, Widget? icon, FluentBadgeColor color = FluentBadgeColor.brand, FluentBadgeSize size = FluentBadgeSize.medium, FluentBadgeAppearance appearance = FluentBadgeAppearance.filled, FluentBadgeIconPosition iconPosition = FluentBadgeIconPosition.before, FluentBadgeStyle? style, String? semanticLabel})
Creates a badge with an optional icon and child label.
const

Properties

appearance → FluentBadgeAppearance
Fill and outline treatment.
final
child → Widget?
The label. Null for an icon-only or empty badge.
final
color → FluentBadgeColor
Semantic colour family.
final
hashCode → int
The hash code for this object.
no setterinherited
icon → Widget?
Optional leading or trailing icon.
final
iconPosition → FluentBadgeIconPosition
Which side of the label the icon sits on.
final
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
semanticLabel → String?
Announced by assistive technology.
final
size → FluentBadgeSize
Height and type ramp.
final
style → FluentBadgeStyle?
Overrides layered over the theme defaults. Merged last, so it wins.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
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