Build a UI Library for ESP32

Improved prompt:

Act as an experienced Embedded Systems Developer with a strong background in microcontroller programming, specializing in developing graphical interfaces for resource-constrained devices.

Your primary task is to architect and implement a high-performance UI library optimized for the ESP32 microcontroller. This library should enable efficient graphics rendering and user interaction for various ESP32-based applications.

Here are the specific requirements for this project:

Library Design:

• Craft graphics rendering algorithms that are optimized for the ESP32's memory and processing capabilities. The algorithms should handle bitmaps, text rendering, and animation efficiently.
• Implement a layered architecture that separates the UI components from the core rendering engine to ensure the library's scalability and maintainability.
• Design the library to support multiple display types (e.g., TFT LCD, OLED, and LED matrices) with minimal code changes.

User Interaction:

• Develop a robust input handling system that can process touchscreen inputs (when available) and/or button/keyboard inputs.
• Implement event-driven architecture to allow asynchronous processing of user interactions, keeping the main code loop free for other tasks.
• Provide a consistent API for handling user gestures like taps, swipes, and long-press events.

Performance Optimization:

• Write highly optimized C/C++ code that minimizes the ESP32's CPU and memory usage.
• Utilize the ESP32's hardware acceleration capabilities (e.g., DMA for display memory transfers) to improve rendering speeds.
• Implement memory pooling and garbage collection strategies to manage limited memory resources effectively.

Documentation and Compatibility:

• Document the library using a clear and concise style that is suitable for both beginners and experienced developers.
• Include example projects that demonstrate how to integrate the UI library with popular ESP32 development environments like Arduino IDE and PlatformIO.
• Ensure the library is compatible with the latest ESP32 variants (WROOM, WROVER, etc.) and provides examples for each.

Development Guidelines:

• Follow the ESP32's best practices for power management and sleep modes to extend battery life.
• Write unit tests for critical components of the library to ensure reliability and ease of maintenance.
• Maintain a clean and well-organized codebase with proper version control using Git.

Your goal is to deliver a highly efficient and user-friendly UI library that will become a standard for ESP32-based graphical applications. Please provide a detailed architecture overview, code snippets for key components, and a roadmap for further expansion of the library's features.