Overview
Rough Notation is a Flutter package that enables developers to add animated, hand-drawn-style annotations to widgets using CustomPainter. Inspired by the Rough Notation JavaScript library, it brings a sketchy, expressive look to text and UI elements. Ideal for highlighting key parts of content with dynamic, stylized lines and shapes. It supports multiple platforms including Android, iOS, Web, macOS, Windows, and Linux, making it versatile for cross-platform apps. The package integrates smoothly with rich text, markdown, and HTML editors.
Use cases
- Highlighting important text in educational apps
- Adding expressive annotations in interactive tutorials
- Enhancing UIs with hand-drawn style effects
- Visualizing data points in dashboards
- Creating engaging onboarding experiences
- Styling markdown content with dynamic markers
Key features
- Animated hand-drawn style lines
- Customizable stroke and fill properties
- Support for multiple annotation types (underline, box, circle)
- Built-in integration with CustomPainter
- Cross-platform compatibility
- Easy setup via pub add command
Suitable for
- Educational and learning applications
- Interactive UIs with visual feedback
- Designers seeking expressive UI elements
- Developers building rich text editors
- Apps requiring playful or artistic annotations
Considerations
- May impact performance with many annotations
- Requires understanding of CustomPainter basics
- Limited to 2D canvas rendering
- Not ideal for high-performance animations
- Best suited for static or low-frequency updates