import { Component } from "../component";
import { Selection } from "d3-selection";
declare type GenericSvgSelection = Selection<SVGElement, any, SVGElement, any>;
export declare class Ruler extends Component {
    type: string;
    backdrop: GenericSvgSelection;
    elementsToHighlight: GenericSvgSelection;
    render(): void;
    showRuler([x, y]: [number, number]): void;
    hideRuler(): void;
    /**
     * Adds the listener on the X grid to trigger multiple point tooltips along the x axis.
     */
    addBackdropEventListeners(): void;
    drawBackdrop(): void;
}
export {};