2.2 KiB
Arcitecture
This document describes how the crates that make up egui are all connected.
Also see CONTRIBUTING.md for what to do before opening a PR.
Crate overview
The crates in this repository are: egui, emath, epaint, egui, epi, egui_web, egui_glium, egui_demo_lib, egui_demo_app.
egui: The main GUI library.
Example code: if ui.button("Click me").clicked() { … }
This is the crate where the bulk of the code is at. egui depends only on emath and epaint.
emath: minimal 2D math library
Examples: Vec2, Pos2, Rect, lerp, remap
epaint
2d shapes and text that can be turned into textured triangles.
Example: Shape::Circle { center, radius, fill, stroke }
Depends on emath, rusttype, atomic_refcell, ahash.
epi
Depends only on egui.
Adds a thin application level wrapper around egui for hosting an egui app inside of eframe.
egui_web
Puts an egui app inside the web browser by compiling to WASM and binding to the web browser with js-sys and wasm-bindgen. Paints the triangles that egui outputs using WebGL.
egui_glium
Puts an egui app inside a native window on your laptop. Paints the triangles that egui outputs using glium.
eframe
A wrapper around egui_web + egui_glium, so you can compile the same app for either web or native.
The demo that you can see at https://emilk.github.io/egui/index.html is using eframe to host the egui. The demo code is found in:
egui_demo_lib
Depends on egui + epi.
This contains a bunch of uses of egui and looks like the ui code you would write for an egui app.
egui_demo_app
Thin wrapper around egui_demo_lib so we can compile it to a web site or a native app executable.
Depends on egui_demo_lib + eframe.
Other integrations
There are also many great integrations for game engines such as bevy and miniquad which you can find at https://github.com/emilk/egui#integrations.