export type MouseButton = 'left' | 'middle' | 'right';
export type KeyboardModifier = 'shift' | 'alt' | 'accel';
export type MouseState = {
    buttons: Record<MouseButton, boolean>;
    button: MouseButton | null;
    u: number;
    v: number;
    x: number;
    y: number;
    moveX: number;
    moveY: number;
    gestureX: number;
    gestureY: number;
};
export type WheelState = {
    u: number;
    v: number;
    x: number;
    y: number;
    moveX: number;
    moveY: number;
    spinX: number;
    spinY: number;
};
export type KeyboardState = Record<string, boolean>;
export type PickRef = {
    pickId: number;
    pickIndex: number;
};
export type PointerCaptureAPI = {
    hasCapture: () => PickRef | null;
    beginCapture: (ref: PickRef) => void;
    endCapture: () => void;
};
export type PointerLockAPI = {
    beginLock: () => void;
    endLock: () => void;
    hasLock: () => boolean;
};
export type EventCallback<T extends CanvasEvent<T> = CanvasEvent<any>> = (event: T) => void;
export type EventBinding<T extends CanvasEvent<T> = CanvasEvent<any>> = {
    id: number;
    callback: EventCallback<T>;
};
export type EventHandler<T extends CanvasEvent<T> = CanvasEvent<any>> = EventCallback<T> | EventBinding<T>;
export type CanvasEvent<T = any> = {
    type: string;
    target: T;
    preventDefault: () => void;
    stopPropagation: () => void;
    defaultPrevented: boolean;
    propagationStopped: boolean;
    detail: number;
    which: number;
};
export type KeyboardEvent<T = any> = CanvasEvent<T> & {
    altKey: boolean;
    code: string;
    ctrlKey: boolean;
    isComposing: boolean;
    key: string;
    locale: string;
    location: number;
    metaKey: boolean;
    repeat: boolean;
    shiftKey: boolean;
};
export type PointerEvent<T = any> = CanvasEvent<T> & MouseState & PickRef & {
    height: number;
    isPrimary: boolean;
    pointerId: number;
    pointerType: string;
    pressure: number;
    tangentialPressure: number;
    tiltX: number;
    tiltY: number;
    twist: number;
    width: number;
    clientX: number;
    clientY: number;
    relatedTarget: EventTarget | null;
    screenX: number;
    screenY: number;
    altKey: boolean;
    ctrlKey: boolean;
    metaKey: boolean;
    shiftKey: boolean;
};
export type WheelEvent<T = any> = CanvasEvent<T> & WheelState & PickRef & {
    clientX: number;
    clientY: number;
    relatedTarget: EventTarget | null;
    screenX: number;
    screenY: number;
    altKey: boolean;
    ctrlKey: boolean;
    metaKey: boolean;
    shiftKey: boolean;
};