ui_layout

A minimal Flexbox-inspired layout engine for Rust GUI development.

This crate provides a small, predictable layout system designed for custom GUI frameworks, editors, and experimental UI engines.

Features

• Flex layout (Row / Column)
• flex_grow and flex_basis
• Fixed size and flexible size mixing
• Min / max size constraints
• Margin and padding (CSS-like spacing)
• Block layout
• Recursive tree-based layout
• Parent-relative positioning

Non-goals

• Full CSS compatibility
• Inline or text layout
• Absolute / fixed positioning
• Web rendering or HTML/CSS parsing

Design goals

• Simple and explicit layout rules
• Easy to reason about and debug
• Suitable for custom renderers (wgpu, skia, etc.)
• No dependency on web standards or DOM

Example

use layout::*;

LayoutEngine::layout(&mut root, 800.0, 600.0);

Status

See CHANGELOG.md for a detailed list of changes.

• Version: 0.2.0
• API is still evolving
• Focused on Flexbox-like block layouts

Future versions may add:

• justify-content
• align-items
• gap
• Improved flex sizing rules

License

MIT