# ui The user interfaces here are built with [raylib](https://www.raylib.com/). Quick start: * set `SHOW_FPS=1` to show the FPS * set `STRICT_MODE=1` to kill the app if it drops too much below 60fps * set `SCALE=1.5` to scale the entire UI by 1.5x * https://www.raylib.com/cheatsheet/cheatsheet.html * https://electronstudio.github.io/raylib-python-cffi/README.html#quickstart Style guide: * All graphical elements should subclass [`Widget`](/system/ui/widgets/__init__.py). * Prefer a stateful widget over a function for easy migration from QT * All internal class variables and functions should be prefixed with `_`