Features

• Animated sweep-gradient border
• One-shot boost via controller.triggerBoost()
• Press-and-hold boost via holdBoostMode
• Optional glowEffect with tunable glow constructor
• Animated on/off via enabled + fadeDuration
• Optional disabled static border (showBorderWhenDisabled)
• Optional child clipping (clipChild)
• Seamless gradient loop with autoCloseGradientLoop
• Smooth phase continuity (no jump back after boost)
• Rounded corners, configurable border width, inner color, and shadows

Bottom Bar Demo

Installation

dependencies:
  animated_border_widgets: ^0.2.0

Quick Start

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

class Demo extends StatefulWidget {
  const Demo({super.key});

  @override
  State<Demo> createState() => _DemoState();
}

class _DemoState extends State<Demo> {
  final controller = AnimatedGradientBorderController();

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AnimatedGradientBorder(
      controller: controller,
      borderRadius: BorderRadius.circular(20),
      borderWidth: 1.8,
      colors: const [
        Color(0xFFED7203),
        Color(0xFFFFA726),
        Color(0xFFFFD54F),
        Color(0xFFFFE0B2),
        Color(0xFFFFB74D),
        Color(0xFFFF8A65),
        Color(0xFFED7203),
      ],
      child: SizedBox(
        height: 56,
        child: ElevatedButton(
          onPressed: controller.triggerBoost,
          child: const Text('Boost'),
        ),
      ),
    );
  }
}

Simple glowEffect Example

AnimatedGradientBorder(
  glowEffect: true,
  colors: const [
    Color(0xFF2B7FFF),
    Color(0xFF55D4FF),
    Color(0xFF9FFFE0),
    Color(0xFF2B7FFF),
  ],
  child: const SizedBox(
    height: 52,
    child: Center(child: Text('Glow Effect')),
  ),
)

Hold Boost Mode

Use holdBoostMode for press-and-hold interactions:

AnimatedGradientBorder(
  holdBoostMode: isPressed,
  holdBoostTurnsPerSecond: 0.9,
  colors: palette,
  child: const SizedBox(height: 52),
)

Example

See the complete demo in example/:

• Demo bottom bar
• Tap boost button
• Hold boost button
• Gray border -> animated border reveal on hold

Full Parameter Set

AnimatedGradientBorder(
  key: const ValueKey('full-config'),
  child: const SizedBox(height: 52),
  colors: const [Colors.orange, Colors.yellow],
  borderRadius: const BorderRadius.all(Radius.circular(16)),
  borderWidth: 1.8,
  turnDuration: const Duration(seconds: 7),
  boostDuration: const Duration(milliseconds: 700),
  boostTurns: 0.24,
  innerColor: Colors.white,
  boxShadow: const [
    BoxShadow(
      color: Color(0x22000000),
      blurRadius: 12,
      offset: Offset(0, 6),
    ),
  ],
  controller: AnimatedGradientBorderController(),
  holdBoostMode: false,
  holdBoostTurnsPerSecond: 0.35,
  enabled: true,
  fadeDuration: const Duration(milliseconds: 300),
  showBorderWhenDisabled: true,
  disabledBorderColor: const Color(0x33000000),
  disabledBorderWidth: null, // defaults to borderWidth
  clipChild: false,
  autoCloseGradientLoop: true,
  glowEffect: false,
  glow: const AnimatedGradientBorderGlow(
    opacity: 0.55,
    outerBlurSigma: 18,
    innerBlurSigma: 8,
    outerStrokeWidth: 14,
    innerStrokeWidth: 8,
    spread: 4,
    blendMode: BlendMode.srcOver,
    fadeDuration: Duration(milliseconds: 220),
    fadeCurve: Curves.easeOut,
  ),
)

AnimatedGradientBorderController:

• triggerBoost()

License

MIT License. See LICENSE.

How to Contribute

To get started, read CONTRIBUTING.md to learn about the guidelines within this project.

Changelog

Refer to the Changelog to get all release notes.

Maintainers

LOGION

Valerij Shishov

This library is open for issues and pull requests. If you have ideas for improvements or bugs, the repository is open to contributions!