Flux Motion #

Declarative, mobile-first motion for Flutter. Apply polished animation to any widget without spreading AnimationController, listeners, and lifecycle logic through your application.

Install #

flutter pub add flutter_flux_motion

import 'package:flutter_flux_motion/flutter_flux_motion.dart';

Quick start #

Every motion wraps an ordinary Flutter widget. Configure its behavior with an immutable spec and choose when it starts with MotionTrigger.

FluxSlide(
  trigger: MotionTrigger.onMount,
  spec: const SlideSpec(
    begin: Offset(0, 24),
    duration: Duration(milliseconds: 480),
    curve: Curves.easeOutCubic,
  ),
  child: const Card(
    child: Padding(
      padding: EdgeInsets.all(16),
      child: Text('Ready to move'),
    ),
  ),
)

Interaction and imperative playback #

Motions can start on mount, tap, tap down, tap up, hover, scroll, or visibility.

FluxGlow(
  trigger: MotionTrigger.onTap,
  spec: const GlowSpec(
    color: Color(0xFF8B5CF6),
    radius: 24,
    spreadRadius: 3,
  ),
  child: const Icon(Icons.favorite, size: 44),
)

Use FluxMotionController when product state, validation, or an asynchronous result should control playback.

final motion = FluxMotionController();

FluxShake(
  controller: motion,
  child: const TextField(),
)

// For example, after invalid form submission:
motion.replay();

The controller exposes play(), stop(), reset(), and replay() and attaches to one motion widget at a time.

Orchestration #

Use FluxSequence for ordered effects and FluxStagger for coordinated lists or groups. Both own their timeline and support the same interaction triggers and imperative controller.

FluxStagger(
  spec: const StaggerSpec(
    interval: Duration(milliseconds: 70),
    beginOffset: Offset(0, 18),
  ),
  children: const [
    ListTile(title: Text('Profile')),
    ListTile(title: Text('Notifications')),
    ListTile(title: Text('Security')),
  ],
)

Navigation motion #

Flux Motion integrates with Flutter's native navigator, dialogs, and Material bottom sheets.

final result = await Navigator.of(context).push<String>(
  FluxPageRoute(
    spec: const FluxPageRouteSpec.sharedAxis(),
    builder: (_) => const CheckoutPage(),
  ),
);

Use showFluxDialog and showFluxBottomSheet for typed results, native barriers and gestures, and consistent transition timing.

Available APIs #

All widget and navigation motions honor Flutter's reduced-motion setting via MediaQuery.disableAnimations.

Interactive catalog #

The Flux Motion catalog documents each public component with live examples, parameters, activation modes, mobile scenarios, composition guidance, and copy-ready Dart code.

To run the catalog locally:

cd example
flutter run -d chrome

Development #

flutter pub get
flutter analyze
flutter test

Architecture and testing principles live in the docs/ directory. Contributions and real-world motion scenarios are welcome through the issue tracker.

License #

Flux Motion is available under the BSD 3-Clause License.