LanguageFlag class

A widget that displays a dual flag for a natural language.

When both a primary and secondary flag exist for the given language and they differ, renders a split flag with the primary (conventional) flag as background and the secondary (locale-adapted) flag clipped on top.

When no secondary flag is available or both flags are identical, renders the primary flag as a regular BasicFlag.

Example usage:

LanguageFlag.fromFlagMap(
  const LangDeu(),
  alternativeMap: context.maps.languageFlags,
)

Inheritance

Available extensions

DecoratedFlagInterfaceExtension

Constructors

LanguageFlag.fromFlagMap(NaturalLanguage language, {Map<NaturalLanguage, BasicFlag>? alternativeMap = defaultSecondaryCountryLanguageFlags, int splitAngle = 45, bool clipSecondary = true, Clip clipBehavior = Clip.antiAlias, Widget? orElse, double? height, double? width, double? aspectRatio, BoxDecoration? decoration, DecorationPosition? decorationPosition, EdgeInsetsGeometry? padding, FlagShaderDelegate? shader, Widget? child, Key? key}): Creates a new instance of LanguageFlag.
const

Properties

alternativeMap → Map<NaturalLanguage, BasicFlag>?: Map of non-official or alternative flags of the ISO objects.
no setterinherited
aspectRatio → double?: The specified aspect ratio of the flag.
finalinherited
basicFlag → BasicFlag?: Returns the BasicFlag for the specified item from the main map or the alternative map if available.
no setterinherited
calculatedAspectRatio → double?: Available on DecoratedFlagInterface, provided by the DecoratedFlagInterfaceExtension extension
The calculated aspect ratio of the flag based on its width and height.
no setter
child → Widget?: A widget to display in the foreground of the flag.
finalinherited
clipBehavior → Clip: The clip behavior for the split edge.
finalinherited
clipSecondary → bool: Whether to clip the secondary flag (default) or the primary flag.
finalinherited
debugLabel → String: Returns a debug label for the flag, which is the ISO code by default.
no setterinherited
decoration → BoxDecoration?: The decoration of the flag.
finalinherited
decorationPosition → DecorationPosition?: The position of the decoration.
finalinherited
hashCode → int: The hash code for this object.
no setterinherited
height → double?: The height of the flag.
finalinherited
item → NaturalLanguage: The item for which the flag is to be displayed.
finalinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
map → Map<NaturalLanguage, BasicFlag>: A map of flags for ISO objects.
no setterinherited
orElse → Widget?: A widget to display if the flag is not found in the map.
finalinherited
padding → EdgeInsetsGeometry?: The padding around the flag.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
shader → FlagShaderDelegate?: Optional shader delegate applied when painting the stripes.
finalinherited
splitAngle → int: The angle of the split line in degrees.
finalinherited
width → double?: The width of the flag.
finalinherited

Methods

build(BuildContext context) → Widget: Describes the part of the user interface represented by this widget.
inherited
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
toThemeData({Widget? child}) → FlagThemeData: Available on DecoratedFlagInterface, provided by the DecoratedFlagInterfaceExtension extension
Converts this DecoratedFlagInterface to a FlagThemeData instance.

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Constants

defaultConventionalLanguageFlags → const Map<NaturalLanguage, BasicFlag>: Default conventional language-to-flag associations.
defaultSecondaryCountryLanguageFlags → const Map<NaturalLanguage, BasicFlag>: Default secondary country flags for languages spoken in multiple countries.