foundations/foundations library

Design tokens, theming hosts, and shared interaction primitives for Material 3 Expressive components.

Classes

CornerRounding

Defines the amount and quality around a given vertex of a shape. radius defines the radius of the circle which forms the basis of the rounding for the vertex. smoothing defines the amount by which the curve is extended from the circular arc around the corner to the edge between vertices.

M3EButtonFontSize

Per-size label font sizes for expressive buttons.

M3EColorScheme

The full set of Material 3 color roles used across expressive components.

M3EColorUtils

Color helpers shared across expressive components.

M3EComponentTheme

Registers an adaptive theme dependency for a single M3E component subtree.

M3EDimensions

Standardized spacing and corner-radius tokens for Material 3 Expressive.

M3EElevation

Material 3 elevation tokens expressed in logical pixels (dp).

M3EFocus

Shared focus helpers for M3E input components.

M3EHaptics

Shared haptic helpers for Material 3 Expressive components.

M3EIcons

A curated set of glyphs from the bundled MaterialIcons font.

M3EInheritedTheme

Inherited theme handle used by M3ETheme.of.

M3EInkSplashTheme

Supplies expressive splash color for Material buttons that only expose overlay color to their ink layer.

M3EInteractionState

The mutually reinforcing interaction states of a component.

M3EMaterialApp

A MaterialApp wired to adaptive M3ETheme with minimal integration code.

M3EMaterialNewShapes

Foundation bridge to material_new_shapes expressive morph polygons.

M3EMotion

Material 3 Expressive motion tokens.

M3EResolvedTheme

Applies a resolved M3EThemeData to a subtree.

M3EScrimSystemUi

System UI overlay for modal surfaces shown over a dark scrim.

M3EShapeClipper

Clips a child to a catalog M3EShapeKind polygon, fitted to the clip size.

M3EShapeContainer

A box clipped to an M3EShapeKind polygon.

M3EShapes

Material 3 Expressive shape (corner radius) tokens.

M3EShapeSet

A five-step BorderRadius scale for a single shape family.

M3ESpacing

Material 3 Expressive spacing tokens.

M3ESpring

A serialisable description of a Material 3 Expressive spring.

M3EStateLayer

Resolves Material state-layer overlay colors using M3EStateOpacity tokens.

M3EStateLayerOverlay

Paints a Material ink splash clipped to shape behind child.

M3EStateOpacity

Material 3 state layer opacity tokens.

M3ETappable

A reusable interaction primitive powering expressive components.

M3ETappableInkScope

Supplies ink interaction callbacks from the tappable primitive to overlays.

M3ETheme

Provides an M3EThemeData to the widget subtree.

M3EThemeController

Manual brightness control for an adaptive M3ETheme root.

M3EThemeData

Immutable bundle of expressive design tokens and per-component themes.

M3EThemeExtension<T extends M3EThemeExtension<T>>

Base type for overridable component themes registered on M3EThemeData.

M3EThemeScope

Hosts adaptive theme listeners and resolves M3EThemeData for components.

M3EThemeScopeState

State for M3EThemeScope that resolves brightness and dynamic color.

M3ETypeScale

The Material 3 type scale.

Morph

This class is used to animate between start and end polygons objects.

RoundedPolygon

The RoundedPolygon class allows simple construction of polygonal shapes with optional rounding at the vertices. Polygons can be constructed with either the number of vertices desired or an ordered list of vertices.

Enums

M3EHapticFeedback

Haptic feedback intensity levels for M3E interactions.

M3EShapeKind

Catalog of Material 3 Expressive morph polygons for clipping and fill.

M3ETypeVariations

Named Roboto Flex axis presets for Material 3 Expressive type.

Extensions

M3EFrameworkColorSchemeHarmonization on ColorScheme

Same as dynamic_color's ColorScheme.harmonized for material_ui.

Matrix4PointTransformer on Matrix4

MorphToPathExtension on Morph

RoundedPolygonToPathExtension on RoundedPolygon

Functions

pathFromCubics({required Path path, required int startAngle, required bool repeatPath, required bool closePath, required List<Cubic> cubics, required double rotationPivotX, required double rotationPivotY}) → Path

Returns a Path for a Cubic list.

Typedefs

M3EStateWidgetBuilder = Widget Function(BuildContext context, M3EInteractionState state)

Builds the visual for a tappable surface given its interaction state.