Vue中封装Openlayer切换底图组件LjBaseLayerChange

野性酷女 2022-09-05 13:57 189阅读 0赞

# 效果图： #

![20210818151034832.png][]

# 使用： #

<template>
       <div id="map" style="width:100vw;height:100vh">
          <div
            style="
              position: fixed;
              top: 12vh;
              right: 30vw;
              z-index: 999;
              display: flex;
              gap: 5px;
              cursor: pointer;
            "
          >
            <LjBaseLayerChange
              img="https://smart-garden-manage.oss-cn-chengdu.aliyuncs.com/%E6%A0%85%E6%A0%BC.jpg"
              title="影像"
              headBgColor="orange"
              @handleClick="changeBaseLayer('tianditu')"
            ></LjBaseLayerChange>
            <LjBaseLayerChange
              img="https://smart-garden-manage.oss-cn-chengdu.aliyuncs.com/%E7%9F%A2%E9%87%8F.jpg"
              title="矢量"
              headBgColor="#2196f3"
              @handleClick="changeBaseLayer('osm')"
            ></LjBaseLayerChange>
          </div>
       </div>
    </template>
     
    <script>
    import "ol/ol.css";
    import { Map, View} from "ol";
    import { Tile as TileLayer, Vector as VectorLayer } from "ol/layer";
    import { TileWMS, OSM, XYZ, Vector as VectorSource } from "ol/source";
    
    import { defaults as defaultControls } from "ol/control";
    
    import LjBaseLayerChange from "@/components/LjBaseLayerChange/index.vue";
    
    export default {
      name: "",
      components: {
        LjBaseLayerChange,
      },
      data() {
        return {
          map: {},
          baselayers: [], //底图
        };
      },
      computed: {},
      mounted() {
        this.initMap();
      },
      methods: {
        changeBaseLayer(e) {
          this.baselayers.forEach((item) => {
            if (e !== item.get("name")) {
              item.setVisible(false);
              return;
            }
            item.setVisible(true);
          });
        },
        initMap() {
          this.baselayers = [
            new TileLayer({
              name: "tianditu",
              source: new XYZ({
                url: "http://t3.tianditu.com/DataServer?T=img_w&tk=5a257cd2df1b3311723bd77b0de14baf&x={x}&y={y}&l={z}",
              }),
              visible: true,
            }),
            new TileLayer({
              name: "osm",
              source: new OSM(),
              visible: false,
            }),
          ];
          this.map = new Map({
            layers: [
              ...this.baselayers, //所有底图
            ],
            target: "map",
            view: new View({
              projection: "EPSG:4326",
              center: [104.29806, 30.5263],
              zoom: 18,
            }),
            controls: defaultControls({ attribution: false, zoom: false }),
          });
        },
      },
      watch: {},
    };
    </script>

#  LjBaseLayerChange/index.vue: #

<template>
      <div
        style="width: 35px; height: 35px; position: relative"
        @click="changeBaseLayer()"
      >
        <el-image style="width: 100%; height: 100%" :src="img"></el-image>
        <div
          style="
            position: absolute;
            top: 0;
            width: 100%;
            text-align: center;
            color: white;
          "
          :style="{ backgroundColor: headBgColor }"
        >
          {
       { title }}
        </div>
      </div>
    </template>
    
    <script>
    export default {
      name: "LjBaseLayerChange",
      components: {},
      props: {
        img: {
          type: String,
          default: "",
        },
        title: {
          type: String,
          default: "标题",
        },
        headBgColor: {
          type: String,
          default: "#ff551f",
        },
      },
      data() {
        return {};
      },
      computed: {},
      created() {},
      mounted() {},
      filters: {},
      methods: {
        changeBaseLayer() {
          this.$emit("handleClick");
        },
      },
      watch: {},
    };
    </script>
    
    <style lang="scss" scoped>
    .LjBaseLayerChange {
    }
    </style>

[20210818151034832.png]: /images/20220829/03cbc7b1390246e99db313888d8c9c97.png