cce26bb6b6
- Add column: Option<u32> field to Span in hybrid.rs - Create layout/columns.rs module with: - Column struct (index + x_range) - assign_columns_to_spans() - assign by x_range containing bbox[0] - assign_columns_to_lines() - propagate via mode (>50% dominance) - HasBBoxAndColumn and HasSpansWithColumn traits - Update layout/mod.rs to export column types - Fix test fixtures in inspect/render (add column: None) Acceptance criteria: - 2-column page span at x0=50 -> Some(0), x0=350 -> Some(1) - Full-width heading line -> None (mixed spans) - Single-column page -> all spans Some(0) - Inter-column gap -> None Closes: pdftract-64j83 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
32 lines
1.2 KiB
Rust
32 lines
1.2 KiB
Rust
//! Layout analysis for Phase 4.
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//!
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//! This module implements block-level layout analysis including:
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//! - Caption classification (caption.rs)
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//! - Code block classification (code.rs)
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//! - Column label assignment (columns.rs)
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//! - Line formation (line.rs)
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//! - Readability aggregation (readability.rs)
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//! - English wordlist for dict coverage scoring (wordlist.rs)
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//!
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//! Phase 4 organizes extracted text into semantic blocks (paragraphs,
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//! headings, figures, captions, etc.) based on spatial and font metrics.
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pub mod caption;
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pub mod code;
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pub mod columns;
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pub mod line;
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pub mod readability;
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pub mod wordlist;
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pub use caption::{classify_caption, classify_page_captions, Block, PageContext};
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pub use code::{
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classify_code, classify_page_code_blocks, is_fixed_pitch_flag, is_monospace_font_name,
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is_monospace_span, MonospaceSpan,
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};
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pub use columns::{assign_columns_to_lines, assign_columns_to_spans, Column};
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pub use line::{
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cluster_spans_into_lines, compute_baseline, group_lines_into_blocks, union_bboxes, BlockInput,
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HasBBox, HasFontSize, Line, LineDirection, LineMetadata,
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};
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pub use readability::{aggregate_page_readability, ScoredSpan};
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pub use wordlist::is_english_word;
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