Crate presentar_layout 

Layout engine for Presentar UI framework.

Implements Flexbox-inspired and CSS Grid layout with SIMD acceleration.

ComputeBlock Grid Compositor

The compute_block module provides a compositor for managing TUI panel layouts:

• Intrinsic Sizing: Widgets report min/preferred/max sizes via SizeHint
• Cell Ownership: Prevents rendering conflicts via GridCompositor
• Clipping: Enforces bounds at render time to prevent artifacts

See ComputeBlock and GridCompositor for details.

Structs

ComputeBlock

A named region in the grid with ownership semantics.

FlexItem

Flex item properties.

GridArea

A named grid area spanning rows and columns.

GridCompositor

Grid compositor managing block ownership.

GridItem

Grid item placement properties.

GridLayout

Computed grid layout result.

GridTemplate

Grid template definition.

LayoutCache

Layout cache for memoizing measure results.

LayoutEngine

Layout engine with memoization.

Rect

Rectangle in terminal coordinates.

Size

Size in terminal cells (u16 for compatibility with ratatui).

SizeHint

Size hints for content-aware layout.

Enums

ClipMode

Clipping behavior for blocks.

CompositorError

Errors from compositor operations.

FlexAlign

Cross axis alignment for flex layout.

FlexConstraint

Extended constraint with Fill support.

FlexDirection

Direction for flex layout.

FlexJustify

Main axis alignment for flex layout.

GridAlign

Alignment within a grid cell.

GridAutoFlow

Auto-placement flow direction.

TrackSize

A track size specification.

Traits

IntrinsicSize

Trait for widgets with intrinsic sizing.

Functions

auto_place_items

Auto-place items in a grid.

compute_grid_layout

Compute grid track sizes.

compute_intrinsic_layout

Compute layout respecting intrinsic sizes.