Keyboard shortcuts

Press ← or → to navigate between chapters

Press S or / to search in the book

Press ? to show this help

Press Esc to hide this help

Layout System

The layout system in univis_ui is built around two passes:

  • an upward pass for intrinsic measurement
  • a downward pass for constraint solving and placement

It operates on three core components:

  • UNode: box metrics and basic visuals
  • ULayout: container behavior
  • USelf: per-child item behavior

Important Files

  • crates/univis_ui_engine/src/layout/univis_node.rs
  • crates/univis_ui_engine/src/layout/core/pass_up.rs
  • crates/univis_ui_engine/src/layout/core/pass_down.rs
  • crates/univis_ui_engine/src/layout/core/solver.rs
  • crates/univis_ui_engine/src/layout/core/layout_cache.rs

Core Principles

  • roots start from URootUi
  • LayoutDepth is derived automatically from hierarchy traversal
  • IntrinsicSize estimates content-driven sizing
  • ComputedSize is the final size consumed by rendering