鹰眼控件

TIP
在地图右上角添加鹰眼控件。
代码如下:

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vue
<template>
  <div id="map"></div>
</template>

<script lang="ts" setup>
import { onMounted, onBeforeUnmount } from "vue";
import { Map, View } from "ol";
import { Tile as TileLayer } from "ol/layer";
import { OSM } from "ol/source";
import { defaults, OverviewMap } from "ol/control";
import { XYZ } from "ol/source";
import { MAPURL, ATTRIBUTIONS } from "../../../constants";

const raster = new TileLayer({
  source: new XYZ({
    attributions: ATTRIBUTIONS,
    url: MAPURL,
    maxZoom: 20,
  }),
});

let map: Map | null = null;

const initMap = () => {
  map = new Map({
    //初始化map
    target: "map",
    //地图容器中加载的图层
    layers: [
      //加载瓦片图层数据
      raster,
    ],
    view: new View({
      projection: "EPSG:4326", // 坐标系，有EPSG:4326和EPSG:3 857
      center: [0, 0],
      //地图初始显示级别
      zoom: 5,
    }),
    //加载控件到地图容器中
    controls: defaults().extend([
      new OverviewMap({
        className: "ol-overviewmap ol-custom-overviewmap",
        layers: [
          new TileLayer({
            source: new OSM({
              // 使用不同样式的底图
              url:
                "https://{a-c}.tile.thunderforest.com/cycle/{z}/{x}/{y}.png" +
                "?apikey=0e6fc415256d4fbb9b5166a718591d71",
            }),
          }),
        ],
        collapseLabel: "\u00BB",
        label: "\u00AB",
        collapsed: false,
      }),
    ]),
  });
};

onMounted(() => {
  initMap();
});

onBeforeUnmount(() => {
  if (map) {
    map.dispose();
    map = null;
  }
});
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
#map {
  width: 100%;
  height: 650px;
}

/* 控制插件的样式和位置 */
:deep(.ol-custom-overviewmap),
:deep(.ol-custom-overviewmap.ol-uncollapsible) {
  bottom: auto;
  left: auto;
  right: 0;
  top: 0;
}

:deep(.ol-custom-overviewmap:not(.ol-collapsed)) {
  border: 1px solid black;
}

:deep(.ol-custom-overviewmap .ol-overviewmap-map) {
  border: none;
  width: 300px;
}

:deep(.ol-custom-overviewmap .ol-overviewmap-box) {
  border: 2px solid red;
}

:deep(.ol-custom-overviewmap:not(.ol-collapsed) button) {
  bottom: auto;
  left: auto;
  right: 1px;
  top: 1px;
}

:deep(.ol-rotate) {
  top: 170px;
  right: 0;
}
</style>
鹰眼控件 ​

代码如下: ​

鹰眼控件

代码如下:
