ScrollbarThemeData class Null safety

Defines default property values for descendant Scrollbar widgets.

Descendant widgets obtain the current ScrollbarThemeData object with ScrollbarTheme.of(context). Instances of ScrollbarThemeData can be customized with ScrollbarThemeData.copyWith.

Typically the ScrollbarThemeData of a ScrollbarTheme is specified as part of the overall Theme with ThemeData.scrollbarTheme.

All ScrollbarThemeData properties are null by default. When null, the Scrollbar computes its own default values, typically based on the overall theme's ThemeData.colorScheme.

Constructors

ScrollbarThemeData({MaterialStateProperty<bool?>? thumbVisibility, MaterialStateProperty<double?>? thickness, MaterialStateProperty<bool?>? trackVisibility, Radius? radius, MaterialStateProperty<Color?>? thumbColor, MaterialStateProperty<Color?>? trackColor, MaterialStateProperty<Color?>? trackBorderColor, double? crossAxisMargin, double? mainAxisMargin, double? minThumbLength, bool? interactive, @Deprecated('Use thumbVisibility instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.') bool? isAlwaysShown, @Deprecated('Use ScrollbarThemeData.trackVisibility to resolve based on the current state instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.') bool? showTrackOnHover}): Creates a theme that can be used for ThemeData.scrollbarTheme.
const

Properties

crossAxisMargin → double?: Overrides the default value of the ScrollbarPainter.crossAxisMargin property in all descendant Scrollbar widgets.
final
hashCode → int: The hash code for this object.
read-onlyoverride
interactive → bool?: Overrides the default value of Scrollbar.interactive in all descendant Scrollbar widgets.
final
isAlwaysShown → bool?: Overrides the default value of Scrollbar.isAlwaysShown in all descendant Scrollbar widgets.
Deprecated('Use thumbVisibility instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.')">@Deprecated('Use thumbVisibility instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.')final
mainAxisMargin → double?: Overrides the default value of the ScrollbarPainter.mainAxisMargin property in all descendant Scrollbar widgets.
final
minThumbLength → double?: Overrides the default value of the ScrollbarPainter.minLength property in all descendant Scrollbar widgets.
final
radius → Radius?: Overrides the default value of Scrollbar.radius in all descendant widgets.
final
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
showTrackOnHover → bool?: Overrides the default value of Scrollbar.showTrackOnHover in all descendant Scrollbar widgets.
Deprecated('Use ScrollbarThemeData.trackVisibility to resolve based on the current state instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.')">@Deprecated('Use ScrollbarThemeData.trackVisibility to resolve based on the current state instead. ' 'This feature was deprecated after v2.9.0-1.0.pre.')final
thickness → MaterialStateProperty<double?>?: Overrides the default value of Scrollbar.thickness in all descendant Scrollbar widgets.
final
thumbColor → MaterialStateProperty<Color?>?: Overrides the default Color of the Scrollbar thumb in all descendant Scrollbar widgets.
final
thumbVisibility → MaterialStateProperty<bool?>?: Overrides the default value of Scrollbar.thumbVisibility in all descendant Scrollbar widgets.
final
trackBorderColor → MaterialStateProperty<Color?>?: Overrides the default Color of the Scrollbar track border when showTrackOnHover is true in all descendant Scrollbar widgets.
final
trackColor → MaterialStateProperty<Color?>?: Overrides the default Color of the Scrollbar track when showTrackOnHover is true in all descendant Scrollbar widgets.
final
trackVisibility → MaterialStateProperty<bool?>?: Overrides the default value of Scrollbar.trackVisibility in all descendant Scrollbar widgets.
final

Methods

copyWith({MaterialStateProperty<bool?>? thumbVisibility, MaterialStateProperty<double?>? thickness, MaterialStateProperty<bool?>? trackVisibility, bool? showTrackOnHover, bool? interactive, Radius? radius, MaterialStateProperty<Color?>? thumbColor, MaterialStateProperty<Color?>? trackColor, MaterialStateProperty<Color?>? trackBorderColor, double? crossAxisMargin, double? mainAxisMargin, double? minThumbLength, bool? isAlwaysShown}) → ScrollbarThemeData: Creates a copy of this object 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 non-existent 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(ScrollbarThemeData? a, ScrollbarThemeData? b, double t) → ScrollbarThemeData: Linearly interpolate between two Scrollbar themes.

Flutter
material
ScrollbarThemeData class