Banner class

Displays a diagonal message above the corner of another widget.

Useful for showing the execution mode of an app (e.g., that asserts are enabled.)

Constructors

Banner({Key? key, Widget? child, required String message, TextDirection? textDirection, required BannerLocation location, TextDirection? layoutDirection, Color color = _kColor, TextStyle textStyle = _kTextStyle}): Creates a banner.
const

child → Widget?: The widget to show behind the banner.
final
color → Color: The color of the banner.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
layoutDirection → TextDirection?: The directionality of the layout.
final
location → BannerLocation: Where to show the banner (e.g., the upper right corner).
final
message → String: The message to show in the banner.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
textDirection → TextDirection?: The directionality of the text.
final
textStyle → TextStyle: The style of the text shown on the banner.
final

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