import { BaseDrawer } from '../drawer/BaseDrawer';
import { ActorGraphic } from './ActorGraphic';
import { IDrawableGraphic, IDrawingBox } from './interfaces';
export declare abstract class BaseSignalGraphic implements IDrawableGraphic {
    box: IDrawingBox;
    message: string;
    actorAGraphic: ActorGraphic;
    actorBGraphic: ActorGraphic;
    type: 'Signal' | 'Note';
    abstract layoutHeight(offsetY: number): void;
    abstract draw(drawer: BaseDrawer): void;
}