import type { jsPDF as JsPdf } from 'jspdf';
import type { WorkPdfPageBounds, WorkPdfPagePoints, WorkPdfTextRun } from './work-pdf-text-layer';
export type WorkPdfTextFontStyle = 'normal' | 'bold' | 'italic' | 'bolditalic';
/** Bounded PDF underline stroke kinds (CSS/Office styles collapse here). */
export type WorkPdfUnderlineKind = 'single' | 'double' | 'thick';
export interface WorkPdfRunUnderline {
    color: string;
    kind: WorkPdfUnderlineKind;
}
/** Opaque fill color for a Writer/CSS highlight background strip. */
export interface WorkPdfRunHighlight {
    color: string;
}
export interface WorkPdfStyledTextRun extends WorkPdfTextRun {
    color: string;
    fontStyle: WorkPdfTextFontStyle;
    /** When set, PDF export paints a vector highlight fill under the text run. */
    highlight?: WorkPdfRunHighlight;
    /** When set, PDF export paints a vector underline after clearing raster text. */
    underline?: WorkPdfRunUnderline;
}
/**
 * Clears raster glyphs under measured Latin runs so the vector text layer can
 * paint sharp, searchable text without inventing a second layout model.
 */
export declare function clearWorkPdfTextRunsOnCanvas(canvas: HTMLCanvasElement, runs: readonly WorkPdfTextRun[], pageCss: Pick<WorkPdfPageBounds, 'height' | 'width'>, fillStyle: string): void;
/**
 * Paints Latin/Latin-1 text as native PDF text operators using Helvetica, and
 * CJK runs with a host-registered TrueType face when available. Non-encodable
 * runs are skipped. Geometry matches the searchable text collector.
 */
export declare function appendWorkPdfVectorTextLayer(pdf: JsPdf, runs: readonly WorkPdfStyledTextRun[], pageCss: Pick<WorkPdfPageBounds, 'height' | 'width'>, pagePoints: WorkPdfPagePoints): void;
export declare function workPdfFontStyleFromCss(style: Pick<CSSStyleDeclaration, 'fontStyle' | 'fontWeight'>): WorkPdfTextFontStyle;
export declare function workPdfTextColorFromCss(color: string): string;