@uiw/react-baidu-map-curve-line/esm/useCurveLine.js

Baidu Map Components for React.

import { useState, useEffect, useMemo } from 'react';
import { useMapContext } from '@uiw/react-baidu-map-map';
import { requireScript } from '@uiw/react-baidu-map-utils';
import { useEnableProperties, useProperties, useVisiable, useEventProperties } from '@uiw/react-baidu-map-utils';
export function useCurveLine(props) {
  if (props === void 0) {
    props = {};
  }
  var {
    strokeColor,
    strokeWeight,
    strokeOpacity,
    strokeStyle,
    enableMassClear,
    enableEditing = false,
    enableClicking,
    icons
  } = props;
  var {
    map
  } = useMapContext();
  var [curveLine, setCurveLine] = useState();
  var libSDK = window.BMapLib;
  var [bMapLib, setBMapLib] = useState(libSDK);
  var [loadMapLib, setLoadBMapLib] = useState(false || !!libSDK);
  // eslint-disable-next-line react-hooks/exhaustive-deps
  var opts = {
    strokeColor,
    strokeWeight,
    strokeOpacity,
    strokeStyle,
    enableMassClear,
    enableEditing,
    enableClicking,
    icons
  };
  useMemo(() => {
    // 如果第一次加载，会执行下面的
    if (map && bMapLib && !curveLine) {
      if (bMapLib.CurveLine) {
        var points = (props.path || []).map(item => new BMap.Point(item.lng, item.lat));
        var instance = new BMapLib.CurveLine(points, opts);
        map.addOverlay(instance);
        setCurveLine(instance);
      }
    }

    // 如果 bMapLib 已经加载过，会执行下面的
    if (map && bMapLib && !bMapLib.CurveLine) {
      requireScript('//api.map.baidu.com/library/CurveLine/1.5/src/CurveLine.min.js').then(() => {
        if (window.BMapLib) {
          var newMapLib = Object.assign(window.BMapLib, bMapLib);
          setBMapLib(newMapLib);
          var _points = (props.path || []).map(item => new BMap.Point(item.lng, item.lat));
          var _instance = new BMapLib.CurveLine(_points, opts);
          map.addOverlay(_instance);
          setCurveLine(_instance);
        }
      }).catch(() => {});
    }

    // 如果第一次加载，会执行下面的
    if (!bMapLib && !loadMapLib) {
      setLoadBMapLib(true);
      requireScript('//api.map.baidu.com/library/CurveLine/1.5/src/CurveLine.min.js').then(() => {
        if (window.BMapLib) {
          setBMapLib(window.BMapLib);
        }
      }).catch(() => {});
    }
  }, [map, bMapLib, curveLine, loadMapLib, props.path, opts]);
  var [path, setPath] = useState(props.path || []);
  useEffect(() => {
    if (curveLine && props.path && path && JSON.stringify(path) !== JSON.stringify(props.path)) {
      var points = path.map(item => new BMap.Point(item.lng, item.lat));
      curveLine.setPath(points);
    }
  }, [curveLine, path, props.path]);
  useVisiable(curveLine, props);
  useEventProperties(curveLine, props, ['Click', 'DblClick', 'MouseDown', 'MouseUp', 'MouseOut', 'MouseOver', 'Remove', 'LineUpdate']);
  useEnableProperties(curveLine, props, ['Editing', 'MassClear']);
  // PositionAt
  useProperties(curveLine, props, ['StrokeColor', 'StrokeOpacity', 'StrokeWeight', 'StrokeStyle']);
  return {
    curveLine,
    setCurveLine,
    BMapLib: bMapLib,
    path,
    setPath
  };
}