/**
 * Heading designs cut off by the page (EF-91). A heading whose reserved
 * height reaches past the foot of its column claims the rest of the column
 * (of the page, for an opener), so nothing runs under it — but a design
 * taller than the page itself still loses what lies past the page's foot
 * (an opener, painted across the page) or past its column's foot (an
 * in-column design, which canvas and PDF cut at its column's foot). The layout
 * does not report it: a cover whose design claims the page is the usual
 * case and loses nothing, so `VDTDocument.warnings` stays as it is. A host
 * that wants to know runs this check on the finished layout; the Sandbox
 * lists its results in the Checks panel.
 */
import { type VDTDocument } from '../vdt.js';
/** A heading design laid out past the foot of what can print it. */
export interface HeadingDesignCut {
    kind: 'headingDesignCut';
    /** Page of the heading, in its document. */
    pageIndex: number;
    /** The heading's level. */
    level: number;
    /** `'page'`: an opener's text runs past the foot of the page (its trim);
     *  `'column'`: an in-column design's text runs past the foot of its
     *  column. */
    where: 'page' | 'column';
    /** How far the lowest baseline of the design's text lies past that
     *  foot, in px. */
    overflowPx: number;
    /** Source range of the heading, for an editor to point at. */
    sourceStart?: number;
    sourceEnd?: number;
}
/**
 * The heading designs of `doc` whose text is laid out past the foot of the
 * page (an opener) or of the heading's column (an in-column design), by
 * more than half a pixel: a long lead on a small screen page, say. Part
 * pages and blank versos are not headings and are not checked. Pure: reads
 * the finished layout only.
 */
export declare function collectHeadingDesignCuts(doc: VDTDocument): HeadingDesignCut[];
//# sourceMappingURL=headingDesignCuts.d.ts.map