BlurBox

Introduction

A powerful and versatile Flutter widget library for applying beautiful blur effects to your UI elements.

BlurBox works like a Container widget but with added blur capabilities, giving you all the styling options of Container plus sophisticated blur effects.

Features

• BlurBox: The core widget for applying customizable blur effects
• AnimatedBlurBox: Smooth animations for changing blur values
• PresetBlurBox: Predefined blur styles for quick implementation
• ThemedBlurBox: Automatically adapts colors to match your app theme
• DirectionalBlurBox: Creates directional blur effects with adjustable angles
• RadialBlurBox: Creates blur that radiates from a focal point
• FollowingBlurBox: Blur that follows user interaction (touch/cursor)
• ScrollAwareBlurBox: Adjust blur based on scroll position
• PatternedBlurBox: Apply blur with decorative pattern overlays
• GeometricPatternBlurBox: Create geometric pattern backgrounds with blur
• OrganicPatternBlurBox: Create flowing natural blur patterns
• KaleidoscopeBlurBox: Create symmetrical kaleidoscope effects with blur

Installation

dependencies:
  blurbox: ^0.0.5

or

flutter pub add blurbox

import 'package:blurbox/blurbox.dart';

Basic Usage

BlurBox

The simplest way to add a blur effect to any widget:

BlurBox(
  blur: 5.0, // Adjust the blur amount
  color: Colors.white.withAlpha(30), // Semi-transparent background
  borderRadius: BorderRadius.circular(16),
  padding: EdgeInsets.all(20),
  child: Text('This text has a blurred background!'),
)

Blur Background

Create a full-screen blurred background:

BlurBox(
  width: double.infinity,
  height: double.infinity,
  blur: 5.0, 
  child: const Center(
    child: Text(
      'Blur Background!',
      style: TextStyle(fontSize: 24.0),
    ),
  ),
),

PresetBlurBox

Use predefined blur styles for quick implementation:

PresetBlurBox(
  preset: BlurPreset.heavy, // Choose from: soft, medium, heavy, subtleShadow, frostedGlass, and more
  borderRadius: BorderRadius.circular(16),
  padding: EdgeInsets.all(20),
  child: Center(
    child: Text(
      'Heavy Blur',
      style: TextStyle(fontSize: 24, color: Colors.white),
    ),
  ),
)

AnimatedBlurBox

Smoothly animate between blur states:

AnimatedBlurBox(
  blur: _isBlurred ? 20.0 : 0.0, // Toggle between blurred and clear
  begin: _isBlurred ? 0.0 : 20.0,
  duration: Duration(milliseconds: 800),
  curve: Curves.easeInOutCubic,
  borderRadius: BorderRadius.circular(20),
  child: Center(
    child: Text('Animated Blur Effect'),
  ),
)

ThemedBlurBox

Automatically match your app theme:

ThemedBlurBox(
  blur: 8,
  borderRadius: BorderRadius.circular(16),
  padding: EdgeInsets.all(20),
  elevation: 4,
  child: Text('Adapts to your app theme colors'),
)

Advanced Usage

DirectionalBlurBox

Create blur effects that flow in a specific direction:

DirectionalBlurBox(
  blur: 12,
  angle: 45.0, // Direction of blur in degrees
  color: Colors.blue.withAlpha(50),
  borderRadius: BorderRadius.circular(16),
  padding: EdgeInsets.all(20),
  child: Text('Directional blur effect'),
)

RadialBlurBox

Create blur that radiates from a focal point:

RadialBlurBox(
  radius: 150.0,
  falloff: 2.0,
  quality: 8,
  maxBlur: 15,
  focalPoint: Alignment(0.3, -0.2), // Position of the focal point
  color: Colors.purple.withAlpha(50),
  borderRadius: BorderRadius.circular(16),
  padding: EdgeInsets.all(20),
  child: Text('Radial blur effect'),
)

FollowingBlurBox

Blur that follows user interaction:

FollowingBlurBox(
  radius: 60,
  blurIntensity: 12,
  followSpeed: 0.5, // How quickly the blur follows (0.0-1.0)
  color: Colors.pink.withAlpha(50),
  child: Container(
    height: 200,
    width: 300,
    child: Center(
      child: Text('Move your finger or cursor over me'),
    ),
  ),
)

ScrollAwareBlurBox

Adjust blur based on scroll position:

ScrollAwareBlurBox(
  scrollController: _scrollController, // Your ScrollController
  minBlur: 0,
  maxBlur: 15,
  scrollThreshold: 300, // How far to scroll for max blur
  color: Colors.white.withAlpha(75),
  child: Text('Scroll-aware header'),
)

PatternedBlurBox

Create blur with decorative pattern overlays:

PatternedBlurBox(
  blur: 8.0,
  color: Colors.white.withAlpha(50),
  patternAsset: 'assets/patterns/dots.png',
  patternOpacity: 0.15,
  borderRadius: BorderRadius.circular(15),
  child: Padding(
    padding: const EdgeInsets.all(20),
    child: Text('Patterned Glass Effect'),
  ),
)

Pattern BlurBoxes

Create beautiful patterns with blur effects:

// Geometric patterns
GeometricPatternBlurBox(
  baseBlur: 8,
  shapeCount: 100,
  colors: [Colors.blue, Colors.purple, Colors.pink],
  shapeTypes: [
    GeometricShapeType.circle,
    GeometricShapeType.rectangle,
  ],
  borderRadius: BorderRadius.circular(16),
  child: Text('Geometric patterns'),
)

// Organic, flowing patterns
OrganicPatternBlurBox(
  blur: 10,
  backgrundBlur: 50,
  color: Colors.teal.withAlpha(100),
  complexity: 8,
  fluidity: 0.8,
  animationDuration: Duration(seconds: 15),
  borderRadius: BorderRadius.circular(16),
  child: Text('Organic patterns'),
)

// Kaleidoscope patterns
KaleidoscopeBlurBox(
  segments: 8,
  blur: 5.0,
  color: Colors.purple.withAlpha(50),
  patternType: KaleidoscopePatternType.basic,
  animated: true,
  rotationDuration: Duration(seconds: 20),
  borderRadius: BorderRadius.circular(16),
  child: Text('Kaleidoscope patterns'),
)

Extension Methods

Apply blur effects directly to any widget:

// Simple blur
Text('Blurred Text').blurry(
  blur: 10,
  color: Colors.blue.withAlpha(50),
  borderRadius: BorderRadius.circular(15),
  padding: EdgeInsets.symmetric(horizontal: 20, vertical: 10),
)

// Animated blur
Container(
  child: Text('Animates between clear and blurry'),
).animatedBlurry(
  blur: _isBlurred ? 10.0 : 0.0,
  beginBlur: _isBlurred ? 0.0 : 10.0,
  duration: Duration(milliseconds: 500),
  borderRadius: BorderRadius.circular(16),
)

Performance Tips

ListView(
physics: const AlwaysScrollableScrollPhysics()
.applyTo(const BouncingScrollPhysics()),
children: [...]
)

Customization

BlurBox offers extensive customization options similar to Container:

• blur: Controls the blur intensity (default: 5.0)
• color: Sets the background color (default: transparent)
• height and width: Define the size
• elevation: Applies a shadow effect
• padding: Adds internal spacing
• margin: Adds external spacing
• alignment: Positions the child within the BlurBox
• clipBehavior: Controls child clipping (default: Clip.none)
• borderRadius: Sets rounded corners
• border: Defines a border
• boxShadow: Creates shadow effects
• gradient: Applies a gradient background
• shape: Defines the shape (default: BoxShape.rectangle)

Examples

Check out the example app in the GitHub repository for complete demonstrations of all features.

License

This package is available under the Apache License.