BioSig Pro — Signature Plugin for Oracle APEX

A production-grade biometric signature capture plugin for Oracle APEX

✨ Features

• ✦ Draw signature with mouse, stylus, or finger
• ✦ Pointer-type awareness — auto-adjusts stroke weight (Mouse / Stylus / Finger)
• ✦ Bézier stroke smoothing — C1-continuous curves, no jagged segments
• ✦ Pressure simulation — slow strokes thicker, fast strokes thinner; real stylus pressure used when available
• ✦ Text signature mode — type name, renders in cursive
• ✦ Rotation export — rotate final image by any degree
• ✦ Adaptive JPEG export — guaranteed to fit within Oracle's VARCHAR2 limit regardless of stroke complexity
• ✦ Correct drawing on responsive layouts — coordinates scale with CSS canvas size
• ✦ Multiple pads per page — each instance is fully isolated
• ✦ Configurable: width, height, pen color, pen width, placeholder text
• ✦ Safe DB submit — guards against empty/corrupt base64, surfaces errors via APEX notifications
• ✦ Mobile-first — full touch and stylus support via Pointer Events API

⚙️ Plugin Attributes

#	Label	Type	Default	Description
1	Canvas Height	Number	200	Height of signature canvas in px
2	Pen Color	Text	#000000	Stroke color (hex)
3	Canvas Width	Number	600	Width of signature canvas in px
4	Pen Width	Number	2	Base stroke thickness in px
5	Rotate Degrees	Number	0	Rotate exported image by N degrees
6	Allow Text Signature	Select (Y/N)	N	Show typed name signature input
7	Placeholder Text	Text	Sign here...	Canvas placeholder text

🚀 Installation

See the complete setup guide in docs/INSTALLATION.md.

🔧 Configuration

See the full attribute reference in docs/CONFIGURATION.md.

🖼️ Screenshots

🧱 Built With

• Oracle APEX
• PL/SQL
• Vanilla JavaScript
• HTML5 Canvas

👨‍💻 Author

Hassan Raza

• Oracle ACE Apprentice

• Oracle APEX Cloud Developer Certified Professional

• Senior Oracle Application Developer at S&H Software Solutions, Frankfurt

• GitHub: https://github.com/Darkhound-droid/

• LinkedIn: https://www.linkedin.com/in/link-hassan-raza/

🤝 Contributing

Contributions are welcome and appreciated.

1. Fork the repository
2. Create a feature branch
3. Commit your changes with clear messages
4. Open a pull request with implementation details and screenshots where relevant

Please also open an issue for major design changes before implementation.

📦 Releases

The compiled .sql plugin export is published in the GitHub Releases section for each tagged version.

📄 License

This project is licensed under the MIT License. See LICENSE for details.