import { Point } from '@mathigon/euclid';
import { CanvasView, ElementView, SVGParentView } from './elements';
declare global {
    interface Window {
        IntersectionObserver?: IntersectionObserver;
        ResizeObserver: any;
    }
    interface Event {
        handled?: boolean;
    }
}
export type ScreenEvent = PointerEvent | TouchEvent | MouseEvent;
export type ScrollEvent = {
    top: number;
};
export type EventCallback = (e: any) => void;
/** Gets the pointer position from an event. */
export declare function pointerPosition(e: any): Point;
/**
 * Gets the pointer position from an event triggered on an `<svg>` element, in
 * the coordinate system of the `<svg>` element.
 */
export declare function svgPointerPosn(event: ScreenEvent, $svg: SVGParentView): Point;
/**
 * Gets the pointer position from an event triggered on an `<canvas>` element,
 * in the coordinate system of the `<canvas>` element.
 */
export declare function canvasPointerPosition(event: ScreenEvent, $canvas: CanvasView): Point;
/**
 * Get the target element for an event, including for touch/pointer events
 * that started on a different element.
 */
export declare function getEventTarget(event: ScreenEvent): ElementView;
export declare function stopEvent(event: Event): void;
interface SlideEventOptions {
    down?: (p: Point) => void;
    start?: (p: Point) => void;
    move?: (p: Point, start: Point, last: Point) => void;
    end?: (last: Point, start: Point) => void;
    up?: (last: Point, start: Point) => void;
    click?: (p: Point) => void;
    justInside?: boolean;
    accessible?: boolean;
    $box?: ElementView;
}
export declare function slide($el: ElementView, fns: SlideEventOptions): void;
interface OverEventOptions {
    enter?: () => void;
    move?: (p: Point) => void;
    exit?: () => void;
}
export declare function pointerOver($el: ElementView, fns: OverEventOptions): void;
interface HoverEventOptions {
    enter?: () => void;
    exit?: () => void;
    preventMouseover?: () => boolean;
    canFocusWithin?: boolean;
    delay?: number;
    exitDelay?: number;
    $clickTarget?: ElementView;
}
export declare function hover($el: ElementView, options: HoverEventOptions): void;
export declare function bindEvent($el: ElementView, event: string, fn: EventCallback, options?: EventListenerOptions): void;
export declare function unbindEvent($el: ElementView, event: string, fn?: EventCallback): void;
export {};