FossThemeData class

The root token bundle: the six leaf bundles in one object. Register it once, then read everything through context.fossTheme. FossThemeData.light and FossThemeData.dark are the defaults; build your own to retheme the app.

Customize globally by passing your own FossThemeData, or per instance through the widget's style object. There are no per-instance token props: to change color, radius, or spacing, change the theme.

MaterialApp(
  theme: FossThemeData.light.toThemeData(),
  darkTheme: FossThemeData.dark.toThemeData(),
);
Inheritance
Annotations

Constructors

FossThemeData({required FossColors colors, required FossRadii radii, required FossSpacing spacing, required FossTypography typography, required FossShadows shadows, required FossMotion motion})
Creates a theme from explicit bundles. Prefer the named defaults.
const

Properties

colors → FossColors
Semantic color roles.
final
hashCode → int
The hash code for this object.
no setteroverride
motion → FossMotion
Animation durations.
final
radii → FossRadii
Corner radii.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
shadows → FossShadows
Elevation shadows.
final
spacing → FossSpacing
Spacing scale.
final
type → Object
The extension's type.
no setterinherited
typography → FossTypography
Text styles.
final

Methods

copyWith({FossColors? colors, FossRadii? radii, FossSpacing? spacing, FossTypography? typography, FossShadows? shadows, FossMotion? motion}) → FossThemeData
Creates a copy of this theme extension with the given fields replaced by the non-null parameter values.
override
lerp(covariant FossThemeData? other, double t) → FossThemeData
Linearly interpolate with another ThemeExtension object.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
retheme(FossThemeSpec spec) → FossThemeData
Layers spec over this theme, returning a rethemed copy. Each unset spec field keeps this theme's value; colors pass through enumerated, while radius, spacing, shadow color, and font family seed their scales. Start from light or dark.
toString() → String
A string representation of this object.
inherited
toThemeData() → ThemeData
This theme wrapped in a ThemeData, to register on MaterialApp.theme. Registers the theme as an extension; it does not restyle Material widgets.

Operators

operator ==(Object other) → bool
The equality operator.
override

Constants

dark → const FossThemeData
The default dark theme (light, with the dark color set).
light → const FossThemeData
The default light theme.