caseEditor/src/view/case/draw/selectMapImage.vue

<template>
  <div class="search-layout">
    <el-input v-model="keyword" placeholder="输入名称搜索" style="width: 350px" clearable @change="onSearch">
      <!-- <template #append>
        <el-button :icon="Search" />
      </template> -->
    </el-input>
    <div class="rrr">
      <div class="search-result" v-show="keyword">
        <div class="search-list" v-for="item,index in keywordList" @click="hanleItem(item.name)">
          {{ item.name }}
        </div>
      </div>
      <!-- <div class="search-sh" v-show="keyword">
        <el-button style="width: 100%" @click="showSearch = !showSearch">
          {{ showSearch ? "收起" : "展开" }}搜索结果
        </el-button>
      </div> -->
    </div>
  </div>
  <div class="def-select-map-layout">
    <div class="def-select-map" id="mapEl" ref="mapEl"></div>
  </div>

  <div class="def-map-info" v-if="searchInfo">
    <p><span>纬度</span>{{ searchInfo.lat }}</p>
    <p><span>经度</span>{{ searchInfo.lng }}</p>
    <!-- <p><span>缩放级别</span>{{ info.zoom }}</p> -->
  </div>
</template>

<script setup lang="ts">
import AMapLoader from "@amap/amap-jsapi-loader";
import { Search } from "@element-plus/icons-vue";
import { wgs84_to_gcj02 } from "./map"
import { getTipsList, getTipsNames, getCaseInfo } from "@/store/case";
import { ref, watchEffect, onMounted, computed  } from "vue";
import { QuiskExpose } from "@/helper/mount";
import { debounce } from "@/util";
import html2canvas from "html2canvas"
import L from 'leaflet'
import 'leaflet/dist/leaflet.css'
import { router } from "@/router";
export type MapImage = { blob: Blob | null; search: MapInfo | null };
type MapInfo = { lat: number; lng: number; zoom: number; text: string; address: string; id: string };
// const layer = L.tileLayer('http://webrd01.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=7&x={x}&y={y}&z={z}')
const layer = L.tileLayer('http://a.map.jms.gd/tile/osm/{z}/{x}/{y}.png')
// const layer = L.tileLayer('http://wprd04.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=6&x={x}&y={y}&z={z}&token=YOUR_API_KEY')


let map: any = {}
let clickMarker;
const keyword = ref("");
const showSearch = ref(true);
const info = ref<MapInfo>();
const caseInfoData = ref<any>(null);
const searchInfo = ref<MapInfo>();
const mapEl = ref<HTMLDivElement>();
const keywordList = ref([]);
watchEffect(() => {
  if (keyword.value) {
    showSearch.value = true;
  }
});
const caseId = computed(() => {
  const caseId = router.currentRoute.value.params.caseId;
  if (caseId) {
    return Number(caseId);
  }
});
onMounted(async () => {
  caseInfoData.value = await getCaseInfo(caseId.value);
  let center = [22.61, 113.05];
  if(caseInfoData.value.latAndLong){
    center = caseInfoData.value.latAndLong.split(",")
  }
  console.log("caseInfoData", caseInfoData.value.latAndLong, center);

  // 'map'为HTML节点id
  map = L.map(mapEl.value, {
    center: center,//中心坐标
    zoom: 14,//缩放级别
    zoomControl: true, //缩放组件
    attributionControl: false, //去掉右下角logol
    layers: [layer],//图层
    // center: [51.505, -0.09],
    // zoom: 13
  })
  

  map.on("click", function (e) {
    // 获取点击位置的经纬度坐标
    var latitude = e.latlng.lat;
    var longitude = e.latlng.lng;
    console.log('click', e, [longitude, latitude]);

    searchInfo.value = {
      text: "",
      lat: latitude,
      lng: longitude,
      zoom: 0,
    };
    clickMarker && clickMarker.remove();
    clickMarker = null;
    // 在地图上添加标记
    clickMarker = L.marker([latitude, longitude],{
      position: [latitude, longitude],
      title: "点击位置",
    });
    clickMarker.addTo(map);
    map.panTo([latitude, longitude])
    // map.add(clickMarker);
  });
})

const resultEl = ref<HTMLDivElement>();
const searchAMap = ref<any>();

watchEffect(async (onCleanup) => {
  if (!mapEl.value || !resultEl.value) {
    return;
  }
//   const AMap = await AMapLoader.load({
//     plugins: ["AMap.PlaceSearch", "AMap.Event"],
//     key: "e661b00bdf2c44cccf71ef6070ef41b8",
//     version: "2.0",
//   });

//   const map = new AMap.Map(mapEl.value, {
//     WebGLParams: {
//       preserveDrawingBuffer: true,
//     },
//     resizeEnable: true,
//   });
//   const placeSearch = new AMap.PlaceSearch({
//     pageSize: 5,
//     showCover: false,
//     pageIndex: 1,
//     map: map,
//     panel: resultEl.value,
//     autoFitView: true,
//   });
//   const setSearch = (data) => {
//     console.log('setSearch', data);
//     let city = data.cityname == data.adname? data.cityname : (data.cityname + data.adname);
//     searchInfo.value = {
//       text: data.pname + city + data.address,
//       lat: data.location.lat,
//       lng: data.location.lng,
//       zoom: 0,
//     };
//   };

//   placeSearch.on("listElementClick", (e) => {
//     setSearch(e.data);
//     showSearch.value = false;
//   });
//   placeSearch.on("complete", function (result) {
//     setTimeout(() => {
//       const markers = map.getAllOverlays("marker");
//       for (const marker of markers) {
//         marker.on("click", () => {
//           clickMarker && map.remove(clickMarker);
//           clickMarker = null;
//           setSearch(marker._data);
//         });
//       }
//     }, 500);
//   });
  //绑定地图移动与缩放事件
  map.on("moveend", () => {
    info.value = getMapInfo();
  });
  map.on("zoomend", () => {
    info.value = getMapInfo();
  });
  searchAMap.value = placeSearch;

  onCleanup(() => {
    searchAMap.value = null;
    map.destroy();
  });
});
const getMapInfo = (): MapInfo => {
    var zoom = map.getZoom(); //获取当前地图级别
    var center = map.getCenter();
    return {
      text: "",
      zoom,
      lat: center.lat,
      lng: center.lng,
    };
  };
const onSearch = (val) => {
  getTipsList(val).then((res) => {
    console.log('getTipsList', res);
    keywordList.value = res.data
  });
  console.log('onSearch', val, 'keyword.value', keyword.value);

};
const hanleItem = (name) => {
  // keyword.value = item.name;
  getTipsNames(name).then((ress) => {
    let res = ress.data;
    // longlat = wgs84_to_gcj02(Number(res.lng),Number(res.lat))
    keyword.value = '';
    searchInfo.value = {
      ...res,
      // lng: longlat[0],
      // lat: longlat[1],
      text: res.name,
    }
    clickMarker && clickMarker.remove();
    // let icon = L.icon({
    //   iconUrl: require('./icon.svg'),
    //   iconSize: [25, 30],
    //   iconAnchor: [12, 30]
    // });
    clickMarker = null;

    // 在地图上添加标记
    clickMarker = L.marker([res.lat, res.lng],{
      position: [res.lat, res.lng],
      title: "点击位置",
      // icon,
    });
    clickMarker.addTo(map);
    map.panTo([res.lat, res.lng])
  })
  // onSearch(item.name);
}
var dataURLtoBlob =  function (dataurl){
        var arr = dataurl.split(','),
            mime = arr[0].match(/:(.*?);/)[1],
            bstr = atob(arr[1]),
            n = bstr.length,
            u8arr = new Uint8Array(n);
       while (n--) {
           u8arr[n] = bstr.charCodeAt(n);
       }
       return new Blob([u8arr], { type: mime })
  }
const search = debounce((keyword: string) => {
  searchAMap.value.search(keyword);
}, 1000);
watchEffect(() => {
  searchAMap.value && search(keyword.value);
});

defineExpose<QuiskExpose>({
  submit() {
    return new Promise<MapImage>((resolve) => {
        console.log('searchInfo', searchInfo.value, mapEl.value);
        if (mapEl.value) {
        const canvas = mapEl.value.querySelector("canvas") as HTMLCanvasElement;
        console.log(canvas, 'canvas');
        canvas && canvas.toBlob((blob) => resolve({ blob, search: searchInfo.value! }))// || resolve({ search: searchInfo.value! });
        if(!canvas){
          //div内容生成图片
          html2canvas(mapEl.value, {
            useCORS: true, // 添加这个选项以解决跨域问题
          }).then((canvas) => {
            let imgUrl = canvas.toDataURL("image/png");
            let blob = dataURLtoBlob(imgUrl)
            resolve({ blob, search: searchInfo.value! });
          });
        }
      } else {
        resolve({ blob: null, search: null });
      }
    });
  },
});
</script>

<style lang="scss" scoped>
.search-layout {
  display: inline-block;
  position: relative;
  margin-bottom: 15px;
  z-index: 2;
}

.rrr {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 1;
}

.search-sh,
.search-result {
  overflow: hidden;

  &.show {
    max-height: 450px;
    overflow-y: auto;
  }
  .search-list{
    background: #fff;
    padding-left: 10px;
    line-height: 36px;
  }
}

.def-map-info {
  margin-top: 10px;
  p {
    font-size: 14px;
    color: rgba(0, 0, 0, 0.85);
    display: inline;
    &:not(:last-child)::after {
      content: ",";
      margin-right: 6px;
    }
  }

  span::after {
    content: "：";
  }
}

.def-select-map-layout {
  --scale: 1.5;
  width: 100%;
  padding-top: calc((390 / 540) * 100%);
  position: relative;
  z-index: 1;
}

.def-select-map {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}
</style>