Changed #

• Updated README with latest features documentation
• Added TextAlignment usage examples
• Added Related Packages section
• Updated installation version to ^0.4.0
• Updated Roadmap with completed features

Fixed #

• Removed unused dart:math and dart:ui imports from decoration_renderer.dart
• Fixed sort_child_properties_last lint warnings in selectable_vertical_text.dart
• Updated TextSpanV to use super parameters

Added #

• Line alignment support (地付き/天付き)
  • alignment property in VerticalTextStyle
  • TextAlignment.start (天付き): Align line to top
  • TextAlignment.center: Center alignment (default)
  • TextAlignment.end (地付き): Align line to bottom
• Alignment demo page in example app

Fixed #

• Ruby position adjustment when sideline decoration is present
• Line grouping for alignment now uses lineIndex instead of exact X coordinate

Changed #

• Uses kinsoku package's TextAlignment enum for alignment values

Fixed #

• Text selection handle dragging
  • Fixed handles being blocked by parent ScrollView gestures
  • Replaced GestureDetector with RawGestureDetector for better gesture control
  • Added early pointer detection with Listener to prevent scroll interference
  • Increased handle size from 6px to 8px radius for better visibility
  • Expanded handle hit test area from 24px to 48px for easier dragging
  • Fixed handle positioning by adding proper left margin
  • Handles now remain fully visible and draggable even inside ScrollView

Changed #

• Selection handles are now larger and easier to tap
• Improved gesture handling with reduced touch slop (1.0px)
• Text layout shifted to accommodate selection handle positioning

Added #

• Text selection support
  • SelectableVerticalText widget for user text selection
  • Tap to select single character
  • Drag to select text range
  • Long-press to show copy menu
  • Copy to clipboard functionality
  • Selection highlighting with customizable color
  • Selection demo page in example app

New Widgets #

• SelectableVerticalText - Vertical text with selection support
• Selection demo at example/lib/demos/selection_demo.dart

Features #

• Character-level hit testing for accurate selection
• Visual selection highlighting
• Context menu with copy action
• Works with ruby (furigana) and kenten annotations

Added #

• Performance optimizations
  • TextPainter reuse in VerticalTextPainter to reduce allocations
  • TextPainter reuse in VerticalRichTextPainter to reduce allocations
  • Optimized rendering pipeline for better performance

Changed #

• Reused TextPainter instances in character rendering methods
• Optimized _drawCharacter() and _drawRuby() methods

Performance Impact #

• ~50% reduction in TextPainter allocations
• Improved rendering performance for scrollable vertical text lists
• Reduced memory pressure during text rendering

Added #

• Initial release
• Basic vertical text layout (top-to-bottom, right-to-left)
• Ruby (furigana) support
• Kenten (emphasis dots) with multiple styles
• Tatechuyoko (horizontal text in vertical layout)
• Kinsoku shori (Japanese line breaking rules)
• Advanced kerning and character spacing
• Yakumono adjustment (punctuation positioning)
• Text selection with context menu
• RichText support for multiple styles
• Figure layout with captions and text wrapping