export type GestureEventPinch = CustomEvent<{
    scale: number;
    centerX: number;
    centerY: number;
}>;
export type GestureEventDrag = CustomEvent<{
    deltaX: number;
    deltaY: number;
    clientX: number;
    clientY: number;
    end: boolean;
}>;
export type GestureEventDoubleTap = CustomEvent<{
    x: number;
    y: number;
}>;
export declare class GestureHelper {
    private __pointers;
    private __lastTapTime;
    private __lastPinchDistance;
    private __dragStart;
    private element;
    constructor(element: Element);
    private init;
    dispose(): void;
    private handlePointerDown;
    private handlePointerMove;
    private handlePointerUp;
    private handlePinch;
    private handleDrag;
    private handleTap;
    private getDistance;
    private addGlobalListeners;
    private removeGlobalListeners;
}