PrismTokens class

The shared design tokens every Prism component reads from.

Prism components ship with sensible defaults, so you never have to install tokens. Register them once and every Prism widget on screen — toasts, banners, sheets, skeletons, tables — picks up the same spacing rhythm, corner radii and motion language.

MaterialApp(
  theme: ThemeData(
    extensions: const [PrismTokens.fallback], // or your own values
  ),
)

Read them anywhere with PrismTokens.of or the context.prismTokens extension:

final tokens = context.prismTokens;
SizedBox(height: tokens.spaceMd);
Inheritance
Available extensions
Annotations

Constructors

PrismTokens({double spaceXs = 4, double spaceSm = 8, double spaceMd = 16, double spaceLg = 24, double spaceXl = 32, double spaceXxl = 48, double radiusSm = 8, double radiusMd = 12, double radiusLg = 16, double radiusXl = 24, Duration durationFast = const Duration(milliseconds: 120), Duration durationMedium = const Duration(milliseconds: 240), Duration durationSlow = const Duration(milliseconds: 420), Curve curveStandard = Curves.easeInOutCubic, Curve curveEmphasized = Curves.easeOutExpo, Curve curveExit = Curves.easeInCubic, double contentMaxWidth = 720, double breakpointCompact = 600, double breakpointExpanded = 840, double controlHeight = 44, double borderWidth = 1})
Creates a token set. Every field has a sensible default so you can override only what you care about.
const

Properties

borderWidth → double
Hairline border width used for dividers and outlined surfaces.
final
breakpointCompact → double
Window width below which the layout is considered "compact" (phone).
final
breakpointExpanded → double
Window width at or above which the layout is considered "expanded".
final
contentMaxWidth → double
Maximum content width on wide windows before content centres.
final
controlHeight → double
Standard height for buttons, fields and list rows.
final
curveEmphasized → Curve
Emphasized easing for entrances.
final
curveExit → Curve
Easing used when something leaves the screen.
final
curveStandard → Curve
Standard easing for symmetric transitions.
final
durationFast → Duration
Fast motion — 120 ms by default. Hover, press, tiny fades.
final
durationMedium → Duration
Medium motion — 240 ms by default. Enter/exit, reveals.
final
durationSlow → Duration
Slow motion — 420 ms by default. Page transitions, large layout shifts.
final
hashCode → int
The hash code for this object.
no setterinherited
radiusLg → double
Large corner radius — 16 by default.
final
radiusMd → double
Medium corner radius — 12 by default.
final
radiusSm → double
Small corner radius — 8 by default.
final
radiusXl → double
Extra-large corner radius — 24 by default.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
spaceLg → double
Large spacing — 24 by default.
final
spaceMd → double
Medium spacing — 16 by default.
final
spaceSm → double
Small spacing — 8 by default.
final
spaceXl → double
Extra-large spacing — 32 by default.
final
spaceXs → double
Extra-small spacing — 4 logical pixels by default.
final
spaceXxl → double
Extra-extra-large spacing — 48 by default.
final
type → Object
The extension's type.
no setterinherited

Methods

copyWith({double? spaceXs, double? spaceSm, double? spaceMd, double? spaceLg, double? spaceXl, double? spaceXxl, double? radiusSm, double? radiusMd, double? radiusLg, double? radiusXl, Duration? durationFast, Duration? durationMedium, Duration? durationSlow, Curve? curveStandard, Curve? curveEmphasized, Curve? curveExit, double? contentMaxWidth, double? breakpointCompact, double? breakpointExpanded, double? controlHeight, double? borderWidth}) → PrismTokens
Creates a copy of this theme extension with the given fields replaced by the non-null parameter values.
override
lerp(covariant ThemeExtension<PrismTokens>? other, double t) → PrismTokens
Linearly interpolate with another ThemeExtension object.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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

Static Methods

of(BuildContext context) → PrismTokens
Reads the nearest tokens, falling back to PrismTokens.fallback.

Constants

fallback → const PrismTokens
The Prism default token set: a 4-point spacing scale, 8/12/16/24 radii, and a fast/medium/slow motion language.