shadcn_theme 0.1.10

Theme-only Flutter package for shadcn color themes and style presets.

shadcn_theme

A theme-only Flutter package for shadcn color themes and style presets.

This package does not ship or wrap any components. It provides token registries, ThemeData factories, and a ThemeExtension so your own Flutter widgets can use shadcn-inspired colors, typography, spacing, radius, density, borders, shadows, and state layers.

Features

• 24 official shadcn color themes.
• 7 official shadcn style presets: Vega, Nova, Maia, Lyra, Mira, Luma, and Sera.
• Light and dark ThemeData factories.
• Complete token access for chart and sidebar colors.
• ThemeData and BuildContext token accessors.
• Stable string lookup helpers for theme ids, style ids, and color token names.
• Example Flutter app under example/.
• No runtime network requests and no npm dependency.

Color values are generated from the official shadcn apps/v4/registry/themes.ts source. Accent-style themes such as blue and amber are pre-merged with the official default neutral base color.

shadcn/ui is MIT licensed; this package keeps its generated token data static so apps do not need the JavaScript registry at runtime.

Usage

import 'package:flutter/material.dart';
import 'package:shadcn_theme/shadcn_theme.dart';

MaterialApp(
  theme: ShadcnThemeData.light(
    theme: ShadcnThemeName.zinc,
    style: ShadcnStyleName.nova,
  ),
  darkTheme: ShadcnThemeData.dark(
    theme: ShadcnThemeName.zinc,
    style: ShadcnStyleName.nova,
  ),
  home: const MyApp(),
);

Override the base radius while keeping the selected style's shape ratios:

final theme = ShadcnThemeData.light(
  theme: ShadcnThemeName.emerald,
  style: ShadcnStyleName.luma,
  radius: 14,
);

Read tokens from the active theme:

final shadcn = context.shadcnTheme;
final optional = Theme.of(context).maybeShadcnTheme;
final chartColors = shadcn.colors.charts;
final sidebarBackground = shadcn.colors.get('sidebar');
final cardPadding = shadcn.style.cardPaddingInsets;
final brightness = shadcn.brightness;

Read tokens without a BuildContext:

final themeName = ShadcnThemeNames.parse('blue');
final styleName = ShadcnStyleNames.parse('mira');
final tokens = themeName.tokens.light;
final styles = styleName.tokens;

Example

Run the bundled example app:

cd example
flutter run

Run the example smoke test:

cd example
flutter test

The example switches color themes, style presets, and brightness while using the same package API that applications consume.

Token Updates

Generated token maintenance rules are documented in doc/token_generation.md.

The 0.1.x public API contract is documented in doc/api_contract.md.

Release validation is documented in doc/release_checklist.md.

Scope

This package intentionally does not implement shadcn widgets. Use Flutter, Material, or your own components and let this package supply the design system tokens and Flutter theme mapping.