Installation

Add to Cargo.toml

[dependencies]
lui = "0.1"

With the winit integration harness (recommended for desktop apps):

[dependencies]
lui = "0.1"
lui-winit = "0.1"

For embedding inside an existing egui/eframe application:

[dependencies]
lui = "0.1"
lui-egui = "0.1"

System Requirements

• GPU with Vulkan, Metal, or DX12 support — the default wgpu backend uses wgpu::Backends::PRIMARY, which selects the best available backend for the platform. The render backend is pluggable; future native backends (D3D12, Vulkan, OpenGL) are planned.
• Working graphics drivers — if you can run wgpu examples, you can run lui.
• Fonts — lui does not ship fonts. You must register .ttf, .otf, or .ttc font files at startup. The winit harness includes register_system_fonts() helpers.

Crate Dependency Tree

lui (façade)
├── lui-parser
├── lui-style
│   └── lui-models
├── lui-layout-old
│   ├── lui-text (cosmic-text)
│   └── lui-events
├── lui-display-list          # backend-agnostic IR
├── lui-renderer-wgpu (wgpu)  # pluggable via RenderBackend trait
└── lui-tree

Integration crates layer on top:

lui-winit / lui-egui
└── lui

Optional Features

Feature	Crate	Description
Winit harness	lui-winit	Batteries-included window and event loop via winit. Viewport scrolling, clipboard, F12 screenshots.
egui backend	lui-egui	Embed lui inside an egui/eframe application window.
Component framework	lui-ui	Elm-architecture component model with reactive state, scoped CSS, and render caching.
Devtools	lui-devtools	Visual devtools panel for inspecting component trees and CSS styles at runtime.

Next Steps

Head to the Quick Start guide to get your first window on screen.