import { QuestionFileModel } from 'survey-core';
import { IPoint } from '../doc_controller';
import { FlatQuestion } from './flat_question';
import { IPdfBrick } from '../pdf_render/pdf_brick';
import { IQuestionFileStyle } from '../style/types';
export declare class FlatFile extends FlatQuestion<QuestionFileModel, IQuestionFileStyle> {
    private generateFlatItem;
    private addLine;
    private getImagePreviewContentWidth;
    generateFlatsContent(point: IPoint): Promise<IPdfBrick[]>;
}