import { vec2 } from "gl-matrix";
/**
 * Enum for {@link MouseEvent.state} numbers
 */
export declare enum Mouse {
    LEFT = 0,
    MIDDLE = 1,
    RIGHT = 2,
    MOVE = 123
}
/**
 * A callback to be executed on mouse button events.
 */
export declare type MouseCallback = (pressed: boolean, pos: vec2) => void;
/**
 * Handles mouse events for an {@link HTMLElement}.
 */
export default class MouseHandler {
    readonly element: HTMLElement;
    /**
     * The mouse's current position within the element.
     */
    private position;
    private buttons;
    private listeners;
    constructor(element: HTMLElement);
    private addListeners;
    /**
     * Gets the current mouse position within the element.
     *
     * If the mouse has not yet entered the element then the position will be [0, 0].
     *
     * @returns The mouse position in pixels as a {@link vec2};
     */
    getMousePos(): vec2;
    /**
     * Determines wether the given mouse button is pressed.
     *
     * @param button The {@link Mouse} button to check
     * @returns Wether the given button is pressed or not
     */
    isPressed(button?: Mouse): boolean;
    /**
     * Attaches a listener to a given mouse button that is called whenever the state of the button changes.
     *
     * @param button The {@link Mouse} button to attach the listener to
     * @param cb The callback to execute on a mousedown/mouseup event
     */
    addListener(button: Mouse, cb: MouseCallback): void;
    /**
     * Removes a listener from a given mouse button.
     *
     * @param button The {@link Mouse} button the listener is attached to
     * @param cb The attached listener
     */
    removeListener(button: Mouse, cb: MouseCallback): void;
}