ChipThemeData class
Holds the color, shape, and text styles for a Material Design chip theme.
Use this class to configure a ChipTheme widget, or to set the ThemeData.chipTheme for a Theme widget.
To obtain the current ambient chip theme, use ChipTheme.of.
The parts of a chip are:
- The "avatar", which is a widget that appears at the beginning of the chip. This is typically a CircleAvatar widget.
- The "label", which is the widget displayed in the center of the chip. Typically this is a Text widget.
- The "delete icon", which is a widget that appears at the end of the chip.
- The chip is disabled when it is not accepting user input. Only some chips have a disabled state: ActionChip, ChoiceChip, FilterChip, and InputChip.
The simplest way to create a ChipThemeData is to use copyWith on the one you get from ChipTheme.of, or create an entirely new one with ChipThemeData.fromDefaults.
  
  
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class CarColor extends StatefulWidget {
  const CarColor({super.key});
  @override
  State createState() => _CarColorState();
}
class _CarColorState extends State<CarColor> {
  Color _color = Colors.red;
  @override
  Widget build(BuildContext context) {
    return ChipTheme(
      data: ChipTheme.of(context).copyWith(backgroundColor: Colors.lightBlue),
      child: ChoiceChip(
        label: const Text('Light Blue'),
        onSelected: (bool value) {
          setState(() {
            _color = value ? Colors.lightBlue : Colors.red;
          });
        },
        selected: _color == Colors.lightBlue,
      ),
    );
  }
}See also:
- Chip, a chip that displays information and can be deleted.
- InputChip, a chip that represents a complex piece of information, such as an entity (person, place, or thing) or conversational text, in a compact form.
- ChoiceChip, allows a single selection from a set of options. Choice chips contain related descriptive text or categories.
- FilterChip, uses tags or descriptive words as a way to filter content.
- ActionChip, represents an action related to primary content.
- CircleAvatar, which shows images or initials of entities.
- Wrap, A widget that displays its children in multiple horizontal or vertical runs.
- ChipTheme widget, which can override the chip theme of its children.
- Theme widget, which performs a similar function to ChipTheme, but for overall themes.
- ThemeData, which has a default ChipThemeData.
- Mixed-in types
- Annotations
Constructors
- 
          ChipThemeData.new({MaterialStateProperty<Color?> ? color, Color? backgroundColor, Color? deleteIconColor, Color? disabledColor, Color? selectedColor, Color? secondarySelectedColor, Color? shadowColor, Color? surfaceTintColor, Color? selectedShadowColor, bool? showCheckmark, Color? checkmarkColor, EdgeInsetsGeometry? labelPadding, EdgeInsetsGeometry? padding, BorderSide? side, OutlinedBorder? shape, TextStyle? labelStyle, TextStyle? secondaryLabelStyle, Brightness? brightness, double? elevation, double? pressElevation, IconThemeData? iconTheme, BoxConstraints? avatarBoxConstraints, BoxConstraints? deleteIconBoxConstraints})
- 
          Create a ChipThemeData given a set of exact values. All the values
must be specified except for shadowColor,selectedShadowColor,elevation, andpressElevation, which may be null.const
- ChipThemeData.fromDefaults({Brightness? brightness, Color? primaryColor, required Color secondaryColor, required TextStyle labelStyle})
- 
          Generates a ChipThemeData from a brightness, a primary color, and a text
style.
            factory
Properties
- avatarBoxConstraints → BoxConstraints?
- 
  Overrides the default for ChipAttributes.avatarBoxConstraints,
the size constraints for the avatar widget.
  final
- backgroundColor → Color?
- 
  Overrides the default for ChipAttributes.backgroundColor
which is used for unselected, enabled chip backgrounds.
  final
- brightness → Brightness?
- 
  Overrides the default value for all chips which affects various base
material color choices in the chip rendering.
  final
- checkmarkColor → Color?
- 
  Overrides the default for
CheckmarkableChipAttributes.checkmarkColor.
  final
- 
  color
  → MaterialStateProperty<Color?> ?
- 
  Overrides the default for ChipAttributes.color.
  final
- deleteIconBoxConstraints → BoxConstraints?
- 
  Overrides the default for DeletableChipAttributes.deleteIconBoxConstraints.
the size constraints for the delete icon widget.
  final
- deleteIconColor → Color?
- 
  Overrides the default for DeletableChipAttributes.deleteIconColor.
  final
- disabledColor → Color?
- 
  Overrides the default for
DisabledChipAttributes.disabledColor, the background color
which indicates that the chip is not enabled.
  final
- elevation → double?
- 
  Overrides the default for ChipAttributes.elevation,
the elevation of the chip's Material.
  final
- hashCode → int
- 
  The hash code for this object.
  no setteroverride
- iconTheme → IconThemeData?
- 
  Overrides the default for ChipAttributes.iconTheme,
the theme used for all icons in the chip.
  final
- labelPadding → EdgeInsetsGeometry?
- 
  Overrides the default for ChipAttributes.labelPadding,
the padding around the chip's label widget.
  final
- labelStyle → TextStyle?
- 
  Overrides the default for ChipAttributes.labelStyle,
the style of the DefaultTextStyle that contains the
chip's label.
  final
- padding → EdgeInsetsGeometry?
- 
  Overrides the default for ChipAttributes.padding,
the padding between the contents of the chip and the outside shape.
  final
- pressElevation → double?
- 
  Overrides the default for TappableChipAttributes.pressElevation,
the elevation of the chip's Material during a "press" or tap down.
  final
- runtimeType → Type
- 
  A representation of the runtime type of the object.
  no setterinherited
- secondaryLabelStyle → TextStyle?
- 
  Overrides the default for ChoiceChip.labelStyle,
the style of the DefaultTextStyle that contains the
chip's label.
  final
- secondarySelectedColor → Color?
- 
  Overrides the default for ChoiceChip.selectedColor, the
background color that indicates that the chip is selected.
  final
- selectedColor → Color?
- 
  Overrides the default for
SelectableChipAttributes.selectedColor, the background color
that indicates that the chip is selected.
  final
- selectedShadowColor → Color?
- 
  Overrides the default for
SelectableChipAttributes.selectedShadowColor, the Color of the
chip's shadow when its elevation is greater than 0 and the chip
is selected.
  final
- shadowColor → Color?
- 
  Overrides the default for ChipAttributes.shadowColor, the
Color of the chip's shadow when its elevation is greater than 0.
  final
- shape → OutlinedBorder?
- 
  Overrides the default for ChipAttributes.shape,
the shape of border to draw around the chip.
  final
- showCheckmark → bool?
- 
  Overrides the default for
CheckmarkableChipAttributes.showCheckmark, which indicates if
a check mark should be shown.
  final
- side → BorderSide?
- 
  Overrides the default for ChipAttributes.side,
the color and weight of the chip's outline.
  final
- surfaceTintColor → Color?
- 
  Overrides the default for ChipAttributes.surfaceTintColor, the
Color of the chip's surface tint overlay when its elevation is
greater than 0.
  final
Methods
- 
  copyWith({MaterialStateProperty< Color?> ? color, Color? backgroundColor, Color? deleteIconColor, Color? disabledColor, Color? selectedColor, Color? secondarySelectedColor, Color? shadowColor, Color? surfaceTintColor, Color? selectedShadowColor, bool? showCheckmark, Color? checkmarkColor, EdgeInsetsGeometry? labelPadding, EdgeInsetsGeometry? padding, BorderSide? side, OutlinedBorder? shape, TextStyle? labelStyle, TextStyle? secondaryLabelStyle, Brightness? brightness, double? elevation, double? pressElevation, IconThemeData? iconTheme, BoxConstraints? avatarBoxConstraints, BoxConstraints? deleteIconBoxConstraints}) → ChipThemeData
- Creates a copy of this object but with the given fields replaced with the new values.
- 
  debugFillProperties(DiagnosticPropertiesBuilder properties) → void 
- 
  Add additional properties associated with the node.
  override
- 
  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
- 
  toStringShort() → String 
- 
  A brief description of this object, usually just the runtimeType and the
hashCode.
  inherited
Operators
- 
  operator ==(Object other) → bool 
- 
  The equality operator.
  override
Static Methods
- 
  lerp(ChipThemeData? a, ChipThemeData? b, double t) → ChipThemeData? 
- Linearly interpolate between two chip themes.