Module layout_sorting 

Enhanced layout sorting logic — xycut_enhanced algorithm.

Faithful port of PaddleX’s xycut_enhanced strategy:

1. Header/Footer separation
2. Cross-layout detection (blocks spanning multiple columns)
3. Direction-aware XY-cut sorting
4. Overlapping box shrinking before projection
5. Weighted distance insertion for special blocks
6. Child block association (vision titles → vision parents)

Structs

SortableBlock

A wrapper around layout elements with properties needed for sorting.

SortableElement

Input element for enhanced sorting.

Enums

OrderLabel

Label used for sorting logic.

Functions

sort_layout_enhanced

Main entry point for enhanced sorting.