use-layer

Layer and z-order semantics primitives for RustUse UI.

Purpose

use-layer models common layer roles, numeric layer indices, and simple layer stacks. It provides ordering helpers without binding to CSS, windows, canvases, or a renderer.

Example

use use_layer::{LayerIndex, LayerRole, LayerStack};

let stack = LayerStack::new(vec![LayerRole::Base, LayerRole::Popover, LayerRole::Modal]);

assert!(LayerRole::Modal.sits_above(LayerRole::Popover));
assert!(LayerIndex::new(20) > LayerIndex::new(10));
assert_eq!(stack.top(), Some(LayerRole::Modal));

Main types

• LayerRole
• LayerIndex
• LayerStack

Facade relationship

The use-ui facade exposes this crate as use_ui::layer when the layer or full feature is enabled.