@lobehub/ui/es/awesome/Spotlight/useMouseOffset.js

Lobe UI is an open-source UI component library for building AIGC web apps

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import { useEffect, useRef, useState } from 'react';
export var useMouseOffset = function useMouseOffset() {
  var _useState = useState(),
    _useState2 = _slicedToArray(_useState, 2),
    offset = _useState2[0],
    setOffset = _useState2[1];
  var _useState3 = useState(true),
    _useState4 = _slicedToArray(_useState3, 2),
    outside = _useState4[0],
    setOutside = _useState4[1];
  var reference = useRef(null);
  useEffect(function () {
    if (reference.current && reference.current.parentElement) {
      var element = reference.current.parentElement;

      // debounce?
      var onMouseMove = function onMouseMove(e) {
        var bound = element.getBoundingClientRect();
        setOffset({
          x: e.clientX - bound.x,
          y: e.clientY - bound.y
        });
        setOutside(false);
      };
      var onMouseLeave = function onMouseLeave() {
        setOutside(true);
      };
      element.addEventListener('mousemove', onMouseMove);
      element.addEventListener('mouseleave', onMouseLeave);
      return function () {
        element.removeEventListener('mousemove', onMouseMove);
        element.removeEventListener('mouseleave', onMouseLeave);
      };
    }
  }, []);
  return [offset, outside, reference];
};