interface Bounding {
    width: number;
}
/**
 * Calculates the total width of the thumbnails container based on the number of thumbnails.
 *
 * Formula: `THUMBNAIL_FRAME_WIDTH * total + THUMBNAIL_OFFSET * (total - 1)`.
 *
 * @param total - The number of thumbnails to display.
 * @returns The total width in pixels for the thumbnails container.
 */
export declare function calculateThumbnailsContainerDimension(total: number): number;
/**
 * Calculates the CSS translation offset needed to center the active thumbnail
 * within the thumbnails container.
 *
 * @param current - Zero-based index of the active thumbnail.
 * @param bounding - The bounding rect of the thumbnails container (only `width` is used).
 * @returns The translation offset in pixels (negative = shift left, positive = shift right).
 */
export declare function calculateThumbnailsOffset(current: number, bounding: Bounding): number;
/**
 * Calculates the horizontal scroll offset (as a negative CSS `left` value) needed
 * to keep the active thumbnail centered within the thumbnail strip.
 *
 * @param current - Zero-based index of the currently active thumbnail.
 * @param total - Total number of thumbnails in the strip.
 * @param bounding - The bounding dimensions of the visible thumbnail container.
 * @returns A negative pixel offset to apply as the `left` CSS property, or `0`
 *   when no scrolling is needed.
 */
export declare function calculateThumbnailsLeftScroll(current: number, total: number, bounding: Bounding): number;
export {};