import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
/**
 * Service handling PDF operations using PDF.js
 * Provides methods to load, navigate, and manipulate PDF documents
 */
export declare class PdfService {
    private pdfDocumentSubject;
    pdfDocument$: Observable<any>;
    private currentPageSubject;
    currentPage$: Observable<number>;
    private totalPagesSubject;
    totalPages$: Observable<number>;
    private zoomSubject;
    zoom$: Observable<number>;
    private rotationSubject;
    rotation$: Observable<number>;
    private linkService;
    private _pdfDocument;
    private _viewer;
    private configService;
    constructor();
    /**
     * Gets the link service for handling annotations
     * @returns The link service instance
     */
    getLinkService(): any;
    /**
     * Get the current PDF document
     * @returns The current PDF document or null if none is loaded
     */
    getCurrentDocument(): any;
    /**
     * Clear the current document and reset state
     * Used when switching between PDFs
     */
    clearDocument(): void;
    /**
     * Configures the PDF.js worker source automatically
     * This eliminates the need for users to manually copy worker files
     */
    private configureWorkerSource;
    /**
     * Loads a PDF document from a URL or binary data
     * @param src URL or binary data of the PDF
     * @returns Promise resolving to the loaded PDF document
     */
    loadDocument(src: string | Uint8Array): Promise<any>;
    /**
     * Sets the current page to display
     * @param pageNumber The page number to display (1-based index)
     */
    setCurrentPage(pageNumber: number): void;
    /**
     * Navigate to the next page if available
     */
    nextPage(): void;
    /**
     * Navigate to the previous page if available
     */
    previousPage(): void;
    /**
     * Set the zoom level for the PDF
     * @param zoom The zoom level (1 = 100%)
     */
    setZoom(zoom: number): void;
    /**
     * Increase zoom by 20%
     */
    zoomIn(): void;
    /**
     * Decrease zoom by 20%
     */
    zoomOut(): void;
    /**
     * Rotate the PDF by a specified number of degrees
     * @param degrees The degrees to rotate (positive = clockwise, negative = counterclockwise)
     */
    rotate(degrees: number): void;
    /**
     * Get the document outline (bookmarks)
     * @returns Promise resolving to the outline structure or empty array
     */
    getOutline(): Promise<any[]>;
    /**
     * Generate a thumbnail for a specific page
     * @param pageNumber The page number to generate thumbnail for
     * @param scale The scale for the thumbnail (smaller = faster)
     * @returns Promise resolving to data URL of the thumbnail
     */
    generateThumbnail(pageNumber: number, scale?: number): Promise<string>;
    /**
     * Search for text in the PDF document
     * @param text The text to search for
     * @returns Promise resolving to an array of search results
     */
    search(text: string): Promise<any[]>;
    /**
     * Download the PDF document
     */
    downloadPdf(): Promise<void>;
    /**
     * Print the PDF document
     */
    printPdf(): Promise<void>;
    static ɵfac: i0.ɵɵFactoryDeclaration<PdfService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PdfService>;
}