GPUI Kit

GPUI Kit (aka: GPUI Component) is a comprehensive Rust desktop application framework built on GPUI.

It combines a complete UI system with application-grade data, layout, content, and editing capabilities, and it ships as three crates that build on each other, all reachable through the single gpui-kit dependency:

gpui-base: Unstyled behavior, controlled state, focus, overlays, virtual lists, dock infrastructure, and semantic design tokens.
gpui-component: GPUI Component, the complete styled component library with 60+ controls, themes, data tables, dock layout, and a code editor.
gpui-shell: Opens a Rust host to JavaScript extensions, one granted capability at a time.

Use gpui-component for polished controls with one coherent visual language, or build your own design system on the reusable behavior and infrastructure in gpui-base. This section documents GPUI Component; see GPUI Base and GPUI Shell for the other two layers.

#Features

60+ UI Components: Forms, navigation, overlays, feedback, layout, and more.
Production Ready: Used to build Longbridge Pro from day one and refined in a publicly shipped commercial desktop application.
Native Feel: Modern controls inspired by macOS and Windows.
120 FPS: GPU-accelerated interfaces that remain smooth under load.
Data Tables: Virtual scrolling, fixed and resizable columns, sorting, and cell selection across hundreds of thousands of rows.
Virtual Lists: Render only the visible range, including differently sized items.
Code Editor: 200K lines, Tree-sitter highlighting, diagnostics, completion, and hover.
Dock Layout: Resizable panels, draggable tabs, nested splits, edge docks, and freeform Tiles.
Rich Content: Native Markdown and HTML, syntax highlighting, and charts.
Design Freedom: Use the complete visual system or build your own on gpui-base.
Typed Motion: CSS-aligned easing, timing, keyframes, springs, presence, and measured reveal with allocation-free steady sampling.
Cross Platform: Ship one Rust codebase to macOS, Windows, and Linux.

#Quick Example

Add gpui-kit to your Cargo.toml:

[dependencies]
gpui-kit = "0.6"

Then create a simple “Hello, World!” application with a button:

use gpui_kit::*;
use gpui_kit::component::button::*;
use gpui_kit::component::*;

pub struct HelloWorld;
impl Render for HelloWorld {
    fn render(&mut self, _: &mut Window, _: &mut Context<Self>) -> impl IntoElement {
        div()
            .v_flex()
            .gap_2()
            .size_full()
            .items_center()
            .justify_center()
            .child("Hello, World!")
            .child(
                Button::new("ok")
                    .primary()
                    .label("Let's Go!")
                    .on_click(|_, _, _| println!("Clicked!")),
            )
    }
}

fn main() {
    gpui_kit::application().run(move |cx| {
        // This must be called before using any GPUI Component features.
        gpui_kit::init(cx);

        cx.spawn(async move |cx| {
            cx.open_window(WindowOptions::default(), |window, cx| {
                let view = cx.new(|_| HelloWorld);
                // This first level on the window, should be a Root.
                cx.new(|cx| Root::new(view, window, cx))
            })
            .expect("Failed to open window");
        })
        .detach();
    });
}

#Community & Support

Learn how to build interruptible 120 FPS animation in the GPUI Base Motion guide.

#License

Apache-2.0