import { BoxZoom } from './BoxZoom';
import { EventDispatcher } from './EventDispatcher';
export declare class PlotZoom {
    scope: any;
    boxZoom: BoxZoom;
    zoomStarted: number;
    lastTransform: {
        x: number;
        y: number;
        k: number;
    };
    eventDispatcher: EventDispatcher;
    zoomObj: any;
    constructor(scope: any);
    initZoomObject(): void;
    init(): void;
    zoomStart(): void;
    zooming(): void;
    zoomEnd(): void;
    private handleContextMenuEvent;
    private zoom;
    private moveGraph;
    private scaleGraph;
    private setLastTransform;
}