import { Barcode1D, draw } from 'barcode-bakery-common';
/**
 * Constructor.
 */
declare class Code39 extends Barcode1D {
    /**
     * Code index for the starting character.
     */
    protected starting: number;
    /**
     * Code index for the ending character.
     */
    protected ending: number;
    /**
     * Indicates if we display the checksum.
     */
    protected checksum: boolean;
    constructor();
    /**
     * Sets if we display the checksum.
     *
     * @param checksum Displays the checksum.
     */
    setChecksum(checksum: boolean): void;
    /**
     * Parses the text before displaying it.
     *
     * @param text The text.
     */
    parse(text: string): void;
    /**
     * Draws the barcode.
     *
     * @param image The surface.
     */
    draw(image: draw.Surface): void;
    /**
     * Returns the maximal size of a barcode.
     * [0]->width
     * [1]->height
     *
     * @param width The width.
     * @param height The height.
     * @return An array, [0] being the width, [1] being the height.
     */
    getDimension(width: number, height: number): number[];
    /**
     * Validates the input.
     */
    protected validate(): void;
    /**
     * Overloaded method to calculate checksum.
     */
    protected calculateChecksum(): void;
    /**
     * Overloaded method to display the checksum.
     *
     * @return The checksum value.
     */
    protected processChecksum(): string | null;
}
export { Code39 };