Emigui

(Experimental, Modularized Immediate mode Graphical User Interface)

An immediate mode GUI library written in Rust. For web apps or native apps.

Goals:

• Lightweight
• Short, conveniant syntax
• Responsive (60 Hz without breaking a sweat)
• Portable
• Platform independent (the same code works on the web and as a native app)

How it works:

Loop:

• Gather input: mouse, touches, screen size, ...
• Run application code (Immediate Mode GUI)
• Output is a triangle mesh
• Render with e.g. OpenGL

Available backends:

Wherever you can render textured triangles you can use Emigui.

Currently two backends have been tested:

• WebAssembly (emigui_wasm) for making a web app
• Glium for native apps (see example_glium).

The same application code can thus be compiled to either into a native app or a web app.

Demos

Emigui feature demo, (partial) source: https://github.com/emilk/emigui/blob/master/emigui/src/example_app.rs

Hobogo: A small game using Emigui, source: https://github.com/emilk/hobogo

State

Mostly a tech demo at this point. I hope to find time to work more on this in the future.

Features:

• Text
• Buttons, checkboxes, radio buttons and sliders
• Horizontal or vertical layout
• Column layout
• Collapsible headers (sections)
• Anti-aliased rendering of circles, rounded rectangles and lines.

Inspiration

The one and only Dear ImGui is a great Immediate Mode GUI for C++ which works with many backends. That library revolutionized how I think about GUI code from something I hated to do to something I now like to do.

Credits / Licenses

Fonts:

• Comfortaa: Open Font License, see OFT.txt
• ProggyClean.ttf, Copyright (c) 2004, 2005 Tristan Grimmer. MIT License. http://www.proggyfonts.net/
• Roboto-Regular.ttf: Apache License, Version 2.0