components/buttons/m3e_buttons library

Classes

M3EButton

M3EButton.

M3EButtonConstants

Shared numeric constants used throughout the button package.

M3EButtonDecoration

Styling overrides for M3EButton.

M3EButtonMeasurements

Resolved layout measurements for a button size variant.

M3EButtonMotion

Spring-based motion configuration for M3EButton and M3EToggleButton.

M3EButtonSize

Standard size variants that map to Material 3 Expressive tokens.

M3EButtonTheme

Theme values for M3EButton.

M3EGradientOutlinePainter

Stroke painter for a rounded-rect outline (solid or gradient).

M3ENoOverflowStrategy

Overflow strategy that renders every action inline without a trigger.

M3EOverflowBottomSheetDecoration

Styling configuration for the overflow bottom sheet in M3EButtonGroup.

M3EOverflowPopupDecoration

Styling configuration for the overflow popup menu in M3EButtonGroup.

M3EOverflowStrategy

Abstract base class for custom overflow implementations.

M3EScrollOverflowStrategy

Overflow strategy that scrolls the actions inline in a single axis.

M3EToggleButtonDecoration

Styling overrides for M3EToggleButton and M3EButtonGroup.

Enums

M3EButtonShape

Overall corner-radius strategy for buttons.

M3EButtonStyle

Visual styles for M3EButton and M3EToggleButton.

M3EHapticFeedback

Haptic feedback intensity levels for M3E interactions.

Constants

m3eGradientForegroundSourceColor → const Color

Opaque white so BlendMode.srcIn shows the gradient as the content color.

Functions

m3eGradientBackgroundBuilder({required BorderRadius clipRadius, WidgetStateProperty<Gradient?>? gradient, ButtonLayerBuilder? explicitBuilder}) → ButtonLayerBuilder?

Builds a ButtonLayerBuilder that paints gradient behind the child.

m3eGradientFillLayer({required BorderRadius clipRadius, required Gradient gradient, required Widget? child, bool disabled = false}) → Widget

Paints gradient behind child, clipped to clipRadius.

m3eGradientForegroundBuilder({required BorderRadius clipRadius, WidgetStateProperty<Gradient?>? gradient, ButtonLayerBuilder? explicitBuilder}) → ButtonLayerBuilder?

Builds a ButtonLayerBuilder that applies gradient to foreground content.

m3eGradientForegroundLayer({required BorderRadius clipRadius, required Gradient gradient, required Widget child}) → Widget

Tints child with gradient via BlendMode.srcIn, clipped to clipRadius.

m3eGradientOutlineLayer({required BorderRadius clipRadius, required double width, required Widget child, Gradient? gradient, Color? color}) → Widget

Paints a stroke around child using clipRadius.

m3eGradientOverlayLayer({required BorderRadius clipRadius, required Gradient gradient, required double opacity, required Widget child}) → Widget

Paints gradient as a clipped state layer over child.

m3eGradientSpanRect({required GlobalKey<State<StatefulWidget>> hostKey, required BuildContext context, required Rect local}) → Rect

Maps local into the box of hostKey so siblings share one gradient span.

m3eGradientSurfaceBuilder({required BorderRadius clipRadius, WidgetStateProperty<Gradient?>? backgroundGradient, WidgetStateProperty<Gradient?>? overlayGradient, WidgetStateProperty<Gradient?>? outlineGradient, WidgetStateProperty<BorderSide?>? outlineSide, double outlineFallbackWidth = 1, ButtonLayerBuilder? explicitBuilder}) → ButtonLayerBuilder?

Fill, overlay, and outline for Material backgroundBuilder.

m3eOutlineWidth(BorderSide? side, {double fallback = 1}) → double

Width from side, or fallback when side is null or none.

m3eOverlayOpacityFor(Set<WidgetState> states) → double

Opacity for a gradient state layer from states.

m3eResolveGradientOverlay({required BorderRadius clipRadius, required Set<WidgetState> states, required Widget child, WidgetStateProperty<Gradient?>? overlayGradient}) → Widget

Resolves overlayGradient and paints it when the state layer is active.

m3eStatesForInteraction(M3EInteractionState state, {bool enabled = true}) → Set<WidgetState>

Maps an M3EInteractionState onto WidgetStates.

m3eUsesGradientOverlay(WidgetStateProperty<Gradient?>? overlayGradient) → bool

Whether overlayGradient should replace Material ink splash.