💥 BREAKING CHANGES #

• Renamed BevelTapMechanic → RaisedEdgeTapMechanic
  • Better reflects the actual visual effect (raised edge rather than beveled/angled edges)
  • Class name: BevelTapMechanic → RaisedEdgeTapMechanic
  • Parameters renamed:
    • bevelHeight → raisedEdgeHeight
    • bevelColor → raisedEdgeColor
    • bevelGradient → raisedEdgeGradient
  • All "bevel" terminology removed from codebase, documentation, and examples

🔄 Migration Guide #

// Before (1.1.0 and earlier)
BevelTapMechanic(
  bevelHeight: 8.0,
  bevelColor: Colors.blue.shade900,
  bevelGradient: LinearGradient(...),
)

// After (2.0.1)
RaisedEdgeTapMechanic(
  raisedEdgeHeight: 8.0,
  raisedEdgeColor: Colors.blue.shade900,
  raisedEdgeGradient: LinearGradient(...),
)

🎯 Rationale #

The term "bevel" traditionally refers to angled/slanted edges in UI design. The current implementation creates a raised platform effect with a flat colored edge beneath the button, not true beveled geometry. The new name "RaisedEdgeTapMechanic" accurately describes what the mechanic does and sets the right expectations for users.

This rename is a critical change to prevent confusion, especially as the package may expand to support multi-directional raised edges in the future.

✨ Added #

• Enhanced Example Pages
  • Added borderRadius parameter to _buildExample and _buildMechanicDemo functions
  • Added border parameter for colored borders on example buttons
  • Examples now support custom border radius configuration
  • Border radius properly passed to both Tappable widget and child Container

🔄 Changed #

• RaisedEdgeTapMechanic Redesign 🎉

  • Simplified architecture: Removed complex trapezoid clipping and custom painting
  • Raised bottom approach: Clean raised bottom edge that smoothly lowers when pressed
  • Vertical scaling effect: Content scales vertically from compressed to 100% height using Matrix4.diagonal3Values
  • Top-fixed animation: Top edge stays fixed while bottom extends downward on press
  • No content distortion: Removed perspective transforms that caused visual artifacts
  • Cleaner code: Reduced from ~285 lines to ~189 lines
  • Better performance: Simpler rendering pipeline with Stack-based layout
  • Smooth animation: Default 200ms duration for natural feel
  • Perfect for keyboard buttons, game UIs, and retro-style interfaces

• Duration Update

  • RaisedEdgeTapMechanic default duration increased from 100ms to 200ms for smoother animation

🐛 Fixed #

• Fixed gap between content and raised bottom in RaisedEdgeTapMechanic
• Fixed content not expanding to full height when pressed
• Removed unnecessary Container wrappers in examples

📝 Documentation #

• Updated RaisedEdgeTapMechanic documentation to reflect new simplified design
• Updated example descriptions to match new behavior
• Improved code comments for clarity

🎯 Migration Notes #

The RaisedEdgeTapMechanic API remains unchanged - existing code will work without modifications. However, the visual effect is now simpler and more performant:

// Same API, better implementation
RaisedEdgeTapMechanic(
  raisedEdgeHeight: 8.0,
  raisedEdgeColor: Colors.blue.shade900,
)

The new design provides:

• ✅ Cleaner visual effect (no trapezoid distortion)
• ✅ Better performance (simpler rendering)
• ✅ Smoother animation (longer default duration)
• ✅ More predictable behavior (top stays fixed)

✨ Added #

• Pluggable Tap Mechanics System

  • New tapMechanics parameter on Tappable and TappableContainer widgets
  • Support for multiple mechanics on a single widget
  • Mechanics compose together for rich interactive experiences

• Built-in Tap Mechanics

  • RippleTapMechanic: Material Design ink ripple effect (default)
    • Supports custom splash color, highlight color, splash radius
    • Support for InkSparkle (Material 3) and InkRipple splash factories
  • ScaleTapMechanic: Scale animation on press
    • Configurable scale factor, duration, and animation curve
    • Default shrinks to 95% (0.95 scale factor)
  • PressTapMechanic: 3D press effect with shadow animation
    • Configurable press depth, shadow color, and blur radius
    • Simulates realistic button press interaction
  • OpacityTapMechanic: Opacity fade on press (iOS-style)
    • Configurable opacity level
    • Smooth fade in/out animation
  • RaisedEdgeTapMechanic: 3D raised edge/raised button effect
    • Realistic physical button simulation with raised bottom edge
    • Configurable raised edge direction (top, bottom, left, right)
    • Adjustable raised edge height for different depth effects
    • Support for solid color or gradient on raised edge
    • Content perspective transform that matches 3D surface
    • Animated borders on raised edge
    • Smooth animation between raised and pressed (flat) states
    • Perfect for retro UIs, game interfaces, and realistic button designs
  • NoneTapMechanic: No visual feedback
    • Pure gesture detection without visual effects

• Example Application

  • Comprehensive example app showcasing all widgets and mechanics
  • Individual demo pages for Tappable, TappableContainer, and Tap Mechanics
  • Live examples of single and combined mechanics
  • Real-world use cases and patterns
  • Located in example/ directory

• Base Classes for Extensibility

  • TapMechanic abstract class for custom mechanics
  • Easy to create custom tap effects by extending TapMechanic
  • Full control over tap animation and visual feedback

🗑️ Deprecated #

• Ripple-specific parameters on Tappable

  • splashColor → Use RippleTapMechanic(splashColor: ...) in tapMechanics
  • highlightColor → Use RippleTapMechanic(highlightColor: ...) in tapMechanics
  • splashRadius → Use RippleTapMechanic(splashRadius: ...) in tapMechanics
  • splashFactory → Use RippleTapMechanic(splashFactory: ...) in tapMechanics
  • Will be removed in version 1.0.0

• Ripple-specific parameters on TappableContainer

  • Same deprecations as Tappable
  • Use tapMechanics parameter instead
  • Will be removed in version 1.0.0

🔄 Changed #

• Tappable widget architecture
  • Refactored to use composition-based tap mechanics system
  • Mechanics are applied in order (first wraps child, second wraps first, etc.)
  • Maintains full backward compatibility with deprecated parameters

📝 Migration Guide #

// Before (0.2.0) - Still works but deprecated
Tappable(
  onTap: () {},
  splashColor: Colors.blue.withValues(alpha: 0.3),
  highlightColor: Colors.blue.withValues(alpha: 0.1),
  child: Text('Tap me'),
)

// After (0.3.0) - Recommended approach
Tappable(
  onTap: () {},
  tapMechanics: [
    RippleTapMechanic(
      splashColor: Colors.blue.withValues(alpha: 0.3),
      highlightColor: Colors.blue.withValues(alpha: 0.1),
    ),
  ],
  child: Text('Tap me'),
)

// New: Combine multiple mechanics
Tappable(
  onTap: () {},
  tapMechanics: [
    RippleTapMechanic(),
    ScaleTapMechanic(scaleFactor: 0.95),
  ],
  child: Text('Ripple + Scale'),
)

// New: Use different mechanics
Tappable(
  onTap: () {},
  tapMechanics: [
    PressTapMechanic(
      pressDepth: 4.0,
      shadowColor: Colors.black26,
    ),
  ],
  child: Text('3D Press'),
)

🎯 Rationale #

• Flexibility: Support for different design systems (Material, Cupertino, custom)
• Composability: Combine multiple tap effects for richer interactions
• Extensibility: Easy to create custom tap mechanics
• Tree-shakable: Unused mechanics won't be included in final bundle
• Modern UX: Support for popular interaction patterns (scale, press, fade)
• Future-proof: Architecture ready for additional tap mechanics

📚 Documentation #

• Updated README.md with tap mechanics section and examples
• Added comprehensive example app with live demos
• Documented all tap mechanics with parameters and use cases
• Migration guide for deprecated parameters

🗑️ Deprecated #

• TButton: Moved to tappable_elements package as TeButton
  • Use package:tappable_elements for button components
  • Will be removed in version 1.0.0
• TCheckbox: Moved to tappable_elements package as TeCheckbox
  • Use package:tappable_elements for checkbox components
  • Will be removed in version 1.0.0
• TSwitch: Moved to tappable_elements package as TeSwitch
  • Use package:tappable_elements for switch components
  • Will be removed in version 1.0.0

📦 Package Restructuring #

• Core widgets remain: Tappable and TappableContainer are still part of this package
• UI elements extracted: Button, Checkbox, and Switch widgets moved to dedicated tappable_elements package
• Better separation: Core touch/tap functionality separated from UI components

📝 Migration Guide #

// Before (tappable 0.0.1)
import 'package:tappable/tappable.dart';

TButton(onPressed: () {}, child: Text('Click me'))

// After (tappable 0.2.0)
import 'package:tappable/tappable.dart';  // For Tappable and TappableContainer
import 'package:tappable_elements/tappable_elements.dart';  // For UI elements

TeButton(onPressed: () {}, child: Text('Click me'))

🎯 Rationale #

• Improves package modularity and maintainability
• Allows independent versioning of UI components
• Reduces dependencies for apps only needing core tap functionality
• Prepares for future expansion of UI element library

Added #

• Initial release of the tappable package
• Tappable widget with Material Design ink effects
  • Support for custom splash and highlight colors
  • Configurable border radius for ink effects
  • Optional padding and fill parent functionality
  • Support for custom splash factories
• TappableContainer widget combining Tappable with Container
  • Automatic border radius extraction from BoxDecoration
  • Full Container parameter support
  • Seamless integration of tap effects with container styling
• TCheckbox widget with customizable appearance
  • Stack-based architecture with background and thumb layers
  • Builder pattern support via buildBackground and buildThumb
  • Configurable size and border radius
  • Default Material Design-like styling
• TSwitch widget with smooth animations
  • Animated thumb position and background color
  • Customizable via builder pattern
  • Configurable animation duration
  • Default toggle switch appearance with shadow effects
• TButton widget for highly customizable buttons
  • Built on TappableContainer foundation
  • Support for disabled states with custom styling
  • Configurable disabled opacity
  • Full Container and Tappable parameter exposure
• Tree-shakable exports for optimal bundle size
  • Main export file for all widgets
  • Individual widget exports in widgets/ directory
• Comprehensive documentation in CLAUDE.md
  • Complete API reference for all widgets
  • Multiple examples from basic to advanced
  • Design philosophy and best practices
  • Advanced usage patterns
• MIT License
• README with package overview

Architecture Decisions #

• Chose Stack-based approach for checkbox and switch to maximize customization
• Separated tappable logic from container logic for better composition
• Used builder pattern for custom rendering to provide maximum flexibility
• Implemented tree-shakable exports to support minimal bundle sizes

[Unreleased] #

Planned #

• Haptic feedback support for tap mechanics
• Accessibility improvements (focus, keyboard navigation, semantic labels)
• Additional tap mechanics (bounce, rotate, slide)
• Theme support with InheritedWidget for default mechanics
• Comprehensive test coverage
• Performance benchmarks for combined mechanics