import { PdfFont, PdfStringFormat } from '../../fonts';
import { PdfDocument } from '../../pdf-document';
import { Point } from '../../pdf-type';
import { PdfBrush, PdfGraphics } from '../pdf-graphics';
import { PdfTemplate } from '../pdf-template';
import { PdfDynamicField } from './dynamic-field';
/**
 * Represents an internal dynamic field that maintains a single cached value for rendering.
 *
 * @private
 */
export declare class PdfSingleValueField extends PdfDynamicField {
    /**
     * Holds the template used for rendering the field value.
     *
     * @private
     */
    _template: PdfTemplate;
    /**
     * Stores the cached string value of the field.
     *
     * @private
     */
    _cachedValue: string;
    /**
     * Keeps a reference to the document associated with the cached value.
     *
     * @private
     */
    _cachedDocument: PdfDocument;
    /**
     * Initializes the base dynamic field with optional font, brush, and string format settings.
     *
     * @private
     *
     * @param {PdfFont} [font] - The font used for rendering the field text.
     * @param {PdfBrush} [brush] - The brush used to define the text color.
     * @param {PdfStringFormat} [stringFormat] - The format used for text layout and alignment.
     * @returns {void} Does not return a value.
     */
    _initializeBase(font?: PdfFont, brush?: PdfBrush, stringFormat?: PdfStringFormat): void;
    /**
     * Performs single-value rendering with caching.
     *
     * @private
     * @param {PdfGraphics} graphics The graphics context.
     * @param {Point} location The drawing location.
     * @returns {void} Nothing.
     */
    _performDraw(graphics: PdfGraphics, location: Point): void;
    /**
     * Gets the string value produced by this field.
     *
     * @private
     * @param {PdfGraphics} graphics
     * The graphics context used during rendering.
     *
     * @returns {string} The resolved string value for the field.
     */
    _getValue(graphics: PdfGraphics): string;
}