import TopicShape from './topicShape';
import Bounds from '../../../utils/bounds';
import BranchViewController from '../../../viewController/branchViewController';
import Size from '../../../utils/size';
export default class UnderlineTopicShape extends TopicShape {
    constructor();
    protected calcTopicShapePath(bounds: Bounds): string;
    getTopicMargins(branch: BranchViewController, size: Size): {
        top: number;
        left: number;
        bottom: number;
        right: number;
    };
    getDrawBounds(topicBounds: Bounds, topicBorderWidth: number): Bounds;
    protected getOffsetPointCalcFnList(branch: BranchViewController): ((parent: BranchViewController, child: BranchViewController) => import("../../../utils/position").default)[];
}