dual_slider 0.0.1+1

A highly customizable Flutter slider widget with dual-direction support, perfect for bidirectional controls like volume, balance, or brightness.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.0.1+1 - 2025-11-13

Fixed

• Shortened package description to meet pub.dev recommendations (60-180 characters)
• Applied Dart formatter to all files for consistency

0.0.1 - 2025-11-11

🎉 Initial Release

First public release of dual_slider package!

✨ Features

Core Functionality

• Dual-direction slider widget with customizable range (-maxValue to +maxValue)
• Flexible value range with configurable maxValue (minimum 1.0)
• Initial value support for setting starting position
• Smooth animations using Flutter's native Slider widget

Customization

• Track colors:

  • Single color support for solid tracks
  • Multi-color gradient support (2+ colors)
  • Custom gradient support for advanced designs
  • Default blue-green gradient

• Thumb customization:

  • Customizable thumb color
  • Icon support (any Material Icon)
  • Border color customization
  • Auto-sized thumb based on track height
  • Manual thumb size with smart limits (80% - 240% of track height)

• Track styling:

  • Adjustable track height
  • Custom border radius support
  • Per-corner radius customization (BorderRadius.only)
  • Fully rounded, slightly rounded, or sharp corners
  • Full-width track (no padding)

Advanced Features

• Divisions for discrete value snapping
• Tick marks with show/hide option
• Dual-color tick marks:
  • activeTickMarkColor for left/negative side
  • inactiveTickMarkColor for right/positive side
  • Auto-sized tick marks by Flutter

Callbacks

• onChanged - Called during value changes
• onChangeStart - Called when dragging starts
• onChangeEnd - Called when dragging ends

📱 Platform Support

• ✅ Android
• ✅ iOS
• ✅ Web
• ✅ macOS
• ✅ Windows
• ✅ Linux

📦 Package Info

• Minimum Dart SDK: ^3.9.2
• Minimum Flutter: >=1.17.0
• Pure Dart implementation (no native code)
• Zero external dependencies (only flutter SDK)

📚 Documentation

• Comprehensive README with examples
• 5 usage examples in demo app
• Full API documentation
• Design tips and use cases
• Screenshots and visual guide

🧪 Testing

• Widget tests included
• Basic rendering tests
• Custom color tests
• Tick marks tests

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Upcoming Features

See TODO.md for planned features in future releases:

• Center indicator for zero point
• Haptic feedback on divisions
• Value labels/tooltips
• Enhanced accessibility support