The SmartFont Library for LED matrix displays

The SmartFont Library by Chaiwat Leanyos is a generic C++ font library for embedded systems (Arduino, ESP32, etc.), designed for efficient rendering of UTF-8 strings on pixel-based displays. It features special support for Thai Language, correctly positioning vowels and tone marks (0x0E00 – 0x0E7F).

Features

• UTF-8 Support: Handles multi-byte characters automatically.
• Thai Language Layout: Automatically adjusts vertical position of upper/lower vowels and tone marks to prevent overlapping.
• Memory Efficient: Fonts are stored in program memory (PROGMEM on AVR/ESP).
• Callback Based: Agnostic to display hardware. You provide drawPixel and clearPixel callbacks.
• Font Converter: Includes a Python tool to generate compatible C source files from .ttf or .otf fonts.

See details on GitHub.

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