$ show raysan5/raygui
This repository contains raygui, an immediate-mode GUI library for the raylib game programming library. It is written entirely in C as a single header file (src/raygui.h). The library provides over 25 controls (buttons, sliders, text boxes, list views, color pickers, etc.) designed specifically for building development tools, debug overlays, and editors. The architecture follows an immediate-mode pattern where controls are drawn and return their state every frame, with no retained state managed by the library, making it highly predictable and easy to integrate into existing game loops. A powerful styling system allows complete customization of colors, fonts, and metrics, with over 20 pre-built themes provided in the styles/ directory. The library also includes a built-in icon system with 256+ 16x16 icons. While tightly coupled to raylib by default, a standalone mode (RAYGUI_STANDALONE) allows it to be adapted to any graphics library by implementing a small set of backend functions. The examples directory contains several high-quality, reusable custom widgets (curve editor, property list, file dialog) that demonstrate how to extend the library. The codebase is mature, well-documented, and actively maintained, representing a high standard of C library craftsmanship within its domain.
The LLM identified 4 files worth highlighting for reuse:
The entire raygui library. While monolithic, it is a masterclass in single-file C library design. It provides a comprehensive immediate-mode GUI framework, a flexible styling system, and an icon system. The code is well-organized with clear sections for each control, consistent error handling, and extensive inline documentation. It is the core reusable asset of the repository.
Implements a cubic Hermite spline curve editor as a self-contained raygui widget. Allows adding, removing, and dragging control points, editing tangents, and evaluating the curve. Demonstrates how to build complex, stateful custom controls on top of raygui's immediate-mode foundation. The evaluation function (GuiCurveEval) is a clean mathematical interpolation that can be reused independently.
A complete modal file dialog built with raygui. Handles directory listing, navigation, file filtering, and selection. A standard UI component implemented cleanly and self-sufficiently, demonstrating modal window patterns and file system interaction.
A template file defining the minimal set of input and drawing functions required to use raygui without raylib. This is a critical piece of architecture that demonstrates the library's portability and provides a clear contract for integrating with any other graphics framework (SDL, GLFW, custom engine).