import { TemplateResult } from 'lit';
import { TcBase } from './tc-base.js';
import { ValueShapeRectangle } from './types.js';
export declare class TcStack extends TcBase<ValueShapeRectangle> {
    gap: number;
    radius: number;
    horizontal: boolean;
    private otherShapes;
    static styles: import("lit").CSSResultGroup[];
    protected computeChartShapes(): void;
    protected chartTemplate(): TemplateResult;
    protected tooltipTemplate(): TemplateResult;
    protected findValueShapeAtPosition(x: number, y: number): ValueShapeRectangle | undefined;
    protected hasEnoughValueShapes(): boolean;
}