@uiw/react-baidu-map-scale-control

^{使用 我的应用 也是一种 支持 我的方式：}

ScaleControl 比例尺控件
===


比例尺控件。你也可以使用 Map 组件 widget 属性来设置控件更方便。

``jsx
import { ScaleControl, useScaleControl } from '@uiw/react-baidu-map';
// 或者单独安装使用
import ScaleControl, { useScaleControl } from '@uiw/react-baidu-map-scale-control';
`

$3

`jsx mdx:preview
import React, { useState, useRef } from 'react';
import { Map, APILoader, ScaleControl } from '@uiw/react-baidu-map';

const Example = () => {
const [show, setShow] = useState(true);
return (
<>
setShow(!show)}>
{show ? '关闭' : '开启'}



);
}

const Demo = () => (


export default Demo;
`

$3

scaleControl, setScaleControl

`jsx mdx:preview
import React from 'react';
import { useRef, useEffect, useState } from 'react';
import { Map, APILoader, Provider, useMap, useScaleControl } from '@uiw/react-baidu-map';

const Example = () => {
const divElm = useRef(null);
const [show, setShow] = useState(true);
const { setContainer, map } = useMap();
const { scaleControl } = useScaleControl({
map, anchor: BMAP_NAVIGATION_CONTROL_LARGE, visiable: show,
});

useEffect(() => {
if (divElm.current && !map) {
setContainer(divElm.current);
}
}, [map]);
return (
<>
setShow(!show)}>
{show ? '关闭' : '开启'}