@uiw/react-baidu-map-ground-overlay

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macOS"><img alt="Palette Genius" height="52" width="52" src="https://wangchujiang.com/appicon/palette-genius.png"></a> <a target="_blank" href="https://apps.apple.com/app/6470879005" title="Symbol Scribe for macOS"><img alt="Symbol Scribe" height="52" width="52" src="https://wangchujiang.com/appicon/symbol-scribe.png"></a> <br/> </div> <hr> GroundOverlay 地面叠加层 === [![Buy me a coffee](https://img.shields.io/badge/Buy%20me%20a%20coffee-048754?logo=buymeacoffee)](https://jaywcjlove.github.io/#/sponsor) [![npm version](https://img.shields.io/npm/v/@uiw/react-baidu-map-ground-overlay.svg)](https://www.npmjs.com/package/@uiw/react-baidu-map-ground-overlay) [![Downloads](https://img.shields.io/npm/dm/@uiw/react-baidu-map-ground-overlay.svg?style=flat)](https://www.npmjs.com/package/@uiw/react-baidu-map-ground-overlay) 地图上的地面叠加层。 ```jsx import { GroundOverlay, useGroundOverlay } from '@uiw/react-baidu-map'; // 或者单独安装使用 import GroundOverlay, { useGroundOverlay } from '@uiw/react-baidu-map-ground-overlay'; ``` ### 基本用法 ```jsx mdx:preview import React, { useState } from 'react'; import { Map, GroundOverlay, APILoader } from '@uiw/react-baidu-map'; const Example = () => { const [visiable, setVisiable] = useState(true); const bounds = new BMap.Bounds( new BMap.Point(116.29579,39.837146), new BMap.Point(116.475451,39.9764) ); function groundRef(props) { if (props && props.groundOverlay) { console.log('groundOverlay:', props.groundOverlay); } } return ( <> <button onClick={() => setVisiable(!visiable)}>{visiable ? '隐藏' : '显示'}</button> <Map center="北京" zoom={11} widget={['NavigationControl']} style={{ height: 350 }}> {visiable && ( <GroundOverlay ref={groundRef} bounds={bounds} imageURL="http://lbsyun.baidu.com/jsdemo/img/si-huan.png" opacity={1} displayOnMinLevel={10} displayOnMaxLevel={14} /> )} </Map> </> ); } const Demo = () => ( <div style={{ width: '100%' }}> <APILoader akay="eYpCTECSntZmw0WyoQ7zFpCRR9cpgHFG"> <Example /> </APILoader> </div> ); export default Demo; ``` ### 使用 hooks `groundOverlay`, `useGroundOverlay` > ⚠️ 不知为何 `show` 和 `hide` 方法存在但不起作用，理论上是继承 [`Overlay`](https://lbsyun.baidu.com/cms/jsapi/reference/jsapi_reference_3_0.html#a3b0) 类就会有 `show()` 和 `hide()` 方法。 ```jsx mdx:preview import React from 'react'; import { useRef, useEffect, useState } from 'react'; import { Map, Provider, APILoader, useMap, useGroundOverlay } from '@uiw/react-baidu-map'; const Example = () => { const divElm = useRef(null); const [visiable, setVisiable] = useState(true); const bounds = new BMap.Bounds( new BMap.Point(116.29579,39.837146), new BMap.Point(116.475451,39.9764) ); const { map, setContainer } = useMap({ center: '北京', zoom: 11, widget: ['GeolocationControl', 'NavigationControl'] }); const { groundOverlay, setGroundOverlay } = useGroundOverlay({ map, bounds, visiable, imageURL: 'http://lbsyun.baidu.com/jsdemo/img/si-huan.png', onClick: () => { console.log('点击事件！'); }, }); useEffect(() => { if (divElm.current) { setContainer(divElm.current); } }); useEffect(() => { if (groundOverlay && map) { // 不知为何方法存在但不起作用， // 理论上是继承 Overlay 类就会有 `show` 和 `hide` 方法。 console.log('groundOverlay:hide:', visiable, groundOverlay.hide); console.log('groundOverlay:show:', visiable, groundOverlay.show); visiable ? groundOverlay.hide() : groundOverlay.show(); } }, [visiable]); return ( <> <button onClick={() => setVisiable(!visiable)}>{visiable ? '隐藏' : '显示'}</button> <div ref={divElm} style={{ height: '100%' }} /> </> ) } const Demo = () => ( <div style={{ width: '100%', height: '300px' }}> <APILoader akay="eYpCTECSntZmw0WyoQ7zFpCRR9cpgHFG"> <Provider> <Example /> </Provider> </APILoader> </div> ); export default Demo; ``` ### Props | 参数 | 说明 | 类型 | 默认值 | | ----- | ----- | ----- | ----- | | bounds | **`必填`** 图层显示的矩形区域 | `BMap.Bounds(sw: Point, ne: Point)` | - | | imageURL | **`必填`** 图层地址 | `string` | - | | opacity | 图层透明度 | `number` | - | | displayOnMinLevel | 图层显示的最小级别 | `number` | - | | displayOnMaxLevel | 图层显示的最小级别 | `number` | - | ```js const bounds = new BMap.Bounds( new BMap.Point(116.29579,39.837146), new BMap.Point(116.475451,39.9764) ); ``` ### 事件 | 参数 | 说明 | 类型 | 默认值 | | ----- | ----- | ----- | ----- | | onClick | 鼠标点击图层后会触发此事件 | (event: { type: string, target: any }) => void; | - | | onDblClick | 鼠标双击图层后会触发此事件 | (event: { type: string, target: any }) => void; | - |