124 lines
5.1 KiB
Markdown
124 lines
5.1 KiB
Markdown
# Nuklear
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[](https://travis-ci.org/vurtun/nuklear)
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This is a minimal state immediate mode graphical user interface toolkit
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written in ANSI C and licensed under public domain. It was designed as a simple
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embeddable user interface for application and does not have any dependencies,
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a default renderbackend or OS window and input handling but instead provides a very modular
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library approach by using simple input state for input and draw
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commands describing primitive shapes as output. So instead of providing a
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layered library that tries to abstract over a number of platform and
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render backends it only focuses on the actual UI.
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## Features
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- Immediate mode graphical user interface toolkit
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- Single header library
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- Written in C89 (ANSI C)
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- Small codebase (~17kLOC)
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- Focus on portability, efficiency and simplicity
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- No dependencies (not even the standard library if not wanted)
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- Fully skinnable and customizable
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- Low memory footprint with total memory control if needed or wanted
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- UTF-8 support
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- No global or hidden state
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- Customizable library modules (you can compile and use only what you need)
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- Optional font baker and vertex buffer output
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## Building
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This library is self contained in one single header file and can be used either
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in header only mode or in implementation mode. The header only mode is used
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by default when included and allows including this header in other headers
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and does not contain the actual implementation.
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The implementation mode requires to define the preprocessor macro
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`NK_IMPLEMENTATION` in *one* .c/.cpp file before `#include`ing this file, e.g.:
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```c
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#define NK_IMPLEMENTATION
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#include "nuklear.h"
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```
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IMPORTANT: Every time you include "nuklear.h" you have to define the same optional flags.
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This is very important not doing it either leads to compiler errors or even worse stack corruptions.
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## Gallery
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## Example
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```c
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/* init gui state */
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struct nk_context ctx;
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nk_init_fixed(&ctx, calloc(1, MAX_MEMORY), MAX_MEMORY, &font);
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enum {EASY, HARD};
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int op = EASY;
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float value = 0.6f;
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int i = 20;
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if (nk_begin(&ctx, "Show", nk_rect(50, 50, 220, 220),
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NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) {
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/* fixed widget pixel width */
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nk_layout_row_static(&ctx, 30, 80, 1);
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if (nk_button_label(&ctx, "button")) {
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/* event handling */
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}
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/* fixed widget window ratio width */
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nk_layout_row_dynamic(&ctx, 30, 2);
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if (nk_option_label(&ctx, "easy", op == EASY)) op = EASY;
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if (nk_option_label(&ctx, "hard", op == HARD)) op = HARD;
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/* custom widget pixel width */
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nk_layout_row_begin(&ctx, NK_STATIC, 30, 2);
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{
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nk_layout_row_push(&ctx, 50);
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nk_label(&ctx, "Volume:", NK_TEXT_LEFT);
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nk_layout_row_push(&ctx, 110);
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nk_slider_float(&ctx, 0, &value, 1.0f, 0.1f);
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}
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nk_layout_row_end(&ctx);
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}
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nk_end(&ctx);
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```
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## Bindings
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There are a number of nuklear bindings for different languges created by other authors.
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I cannot atest for their quality since I am not necessarily proficient in either of these
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languages. Furthermore there are no guarantee that all bindings will always be kept up to date:
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- [Java](https://github.com/glegris/nuklear4j) by Guillaume Legris
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- [Golang](https://github.com/golang-ui/nuklear) by golang-ui@github.com
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- [Rust](https://github.com/snuk182/nuklear-rust) by snuk182@github.com
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- [Chicken](https://github.com/wasamasa/nuklear) by wasamasa@github.comx
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- [Nim](https://github.com/zacharycarter/nuklear-nim) by zacharycarter@github.com
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## Credits
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Developed by Micha Mettke and every direct or indirect contributor to the GitHub.
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Embeds `stb_texedit`, `stb_truetype` and `stb_rectpack` by Sean Barret (public domain)
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Embeds `ProggyClean.ttf` font by Tristan Grimmer (MIT license).
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Big thank you to Omar Cornut (ocornut@github) for his [imgui](https://github.com/ocornut/imgui) library and
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giving me the inspiration for this library, Casey Muratori for handmade hero
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and his original immediate mode graphical user interface idea and Sean
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Barret for his amazing single header [libraries](https://github.com/nothings/stb) which restored my faith
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in libraries and brought me to create some of my own.
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## License
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This software is dual-licensed to the public domain and under the following
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license: you are granted a perpetual, irrevocable license to copy, modify,
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publish and distribute this file as you see fit.
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