/**
 * Highlight marks (`:mark[text]{style="…"}`, #888): the coloured band
 * behind a phrase, as a textbook highlights its key words. The parser keeps
 * the phrase as ordinary text (its range rides on `InlineSpan.links`, so
 * the layout is the one without the mark) and the measurer stamps it on
 * the segments of its words (`VDTLineSegment.mark`). Once the document is
 * laid out, each line gets the bands of the marks on it
 * (`VDTLine.highlights`), placed where the renderers paint the segments
 * ({@link segmentPositions}: alignment, justified word spaces and the
 * line's paint order included), which every renderer paints under the
 * line's text.
 *
 * A band covers the marked words of a line and the spaces between them,
 * from 0.8 em above the baseline to 0.25 em below it, grown by the style's
 * vertical padding. At the phrase's true start and end it reaches
 * `paddingX` past the letters and its corners are rounded; where the phrase
 * breaks onto the next line the band stops square at the last letter, and
 * the next line's band starts square at the first. A style with
 * `decorationBreak: 'clone'` gives every line piece the padding and the
 * corners of both ends instead (CSS `box-decoration-break: clone`); the
 * band is painted, not measured, so the layout is the same.
 */
import type { ResolvedMarkStyleConfig } from './types.js';
import type { VDTDocument, VDTLine, VDTLineHighlight } from './vdt.js';
import { segmentPositions } from './cjkMarks.js';
type BlockLike = Parameters<typeof segmentPositions>[1];
/** The highlight bands of a line, relative to it; empty when it holds no
 *  mark. */
export declare function lineHighlights(line: VDTLine, block: BlockLike, styles: readonly ResolvedMarkStyleConfig[], dpi: number): VDTLineHighlight[];
/** Set `VDTLine.highlights` on every line of the document that holds a
 *  highlight mark (see the module comment): paragraphs, headings, list
 *  items, notes and the texts of resource blocks. A style that sets the
 *  text's `color` gives it to the marked words. */
export declare function highlightDocument(doc: VDTDocument): void;
export {};
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