vue中使用leaflet(一)

下載leaflet與leaflet.pm

leaflet 用於根據座標自動繪製等操作，leaflet.pm可實現用戶手動繪製。
leaflet.pm 參考網址：https://www.npmjs.com/package/leaflet.pm
leaflet 參考網址：https://leafletjs.com/reference-1.6.0.html

npm install leaflet.pm
npm install leaflet

引入，在項目main.js中

import 'leaflet/dist/leaflet.css'
// 引入Leaflet對象 掛載到Vue上，便於全局使用，也可以單獨頁面中單獨引用
import * as L from 'leaflet'
import 'leaflet.pm'
import 'leaflet.pm/dist/leaflet.pm.css'

Vue.config.productionTip = false;
Vue.L = Vue.prototype.$L = L

/* leaflet icon */
delete L.Icon.Default.prototype._getIconUrl
L.Icon.Default.mergeOptions({
  iconRetinaUrl: require('leaflet/dist/images/marker-icon-2x.png'),
  iconUrl: require('leaflet/dist/images/marker-icon.png'),
  shadowUrl: require('leaflet/dist/images/marker-shadow.png'),
})

初始化地圖

初始化

 map = L.map('map',{
      center: [40.02404009136253, 116.50641060224784], // 地圖中心
      zoom: 14,   //縮放比列
      zoomControl: false, //禁用 + - 按鈕
      doubleClickZoom: false,  // 禁用雙擊放大
      attributionControl: false  // 移除右下角leaflet標識
    });

引入圖層,可以引入多個圖層

 L.tileLayer(
    "http://mt0.google.cn/vt/lyrs=y@160000000&hl=zh-CN&gl=CN&src=app&y={y}&x={x}&z={z}&s=Ga",
  ).addTo(this.map);

初始化綜合代碼

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

<script>
export default {
  data() {
    return {
        map: ""
    };
  },
  mounted() {
    this.initDate();
  },
  methods: {
    initDate() {
      this.map = L.map("map", {
        center: [40.02404009136253, 116.50641060224784], // 地圖中心
        zoom: 14, //縮放比列
        zoomControl: false, //禁用 + - 按鈕
        doubleClickZoom: false, // 禁用雙擊放大
        attributionControl: false // 移除右下角leaflet標識
      });
      let name = L.tileLayer(
        "http://mt0.google.cn/vt/lyrs=y@160000000&hl=zh-CN&gl=CN&src=app&y={y}&x={x}&z={z}&s=Ga",
      ).addTo(this.map);
    //   this.map.removeLayer(name)  // 移除圖層
    }
  }
};
</script>

<style lang="stylus" scoped>
#map {
  width: 100%;
  height: calc(100vh);
  z-index: 1;
}
</style>

添加繪製按鈕功能及獲取對應座標

引入leafle.pm原生組件

 this.map.pm.addControls({
    position: "topleft",
    drawPolygon: false, // 添加繪製多邊形
    drawMarker: false, //添加按鈕以繪製標記
    drawCircleMarker: false, //添加按鈕以繪製圓形標記
    drawPolyline: false, //添加按鈕繪製線條
    drawRectangle:	true,	//添加按鈕繪製矩形
    drawCircle: false, //  添加按鈕繪製圓圈
    editMode: true, //  添加按鈕編輯多邊形
    dragMode: true, //   添加按鈕拖動多邊形
    cutPolygon: true, // 添加一個按鈕以刪除圖層裏面的部分內容
    removalMode: true  // 清除圖層
  });
 // 設置繪製後的線條顏色等
this.map.pm.setPathOptions({
    color: "orange",
    fillColor: "green",
    fillOpacity: 0.4
});
this.map.pm.setLang('zh');  //設置語言  en, de, it, ru, ro, es, fr, pt_br, zh , nl

綁定自己的按鈕

<!----template>
<template>
  <div>
    <button class="draw" @click="draw()">繪製</button>
    <button class="disDraw" @click="disDraw()">關閉繪製</button>
    <div id="map"></div>
  </div>
</template>

<!----js>
draw() {
  this.map.pm.enableDraw("Polygon", { 
      snappable: false,
   });
  //   this.map.pm.enableDraw("Marker", { snappable: false });
  //   this.map.pm.enableDraw("CircleMarker", { snappable: false });
},
disDraw() {
  this.map.pm.disableDraw("Polygon");
  //    this.map.pm.disableDraw('Marker');
  //    this.map.pm.disableDraw('CircleMarker');
}

<!----style>
.draw {
  display: flex;
  z-index: 2;
  width: 100px;
  height: 50px;
  position: absolute;
  left: 50px;
  justify-content: center;
  align-items: center;
}

.disDraw {
  display: flex;
  z-index: 2;
  width: 100px;
  height: 50px;
  position: absolute;
  left: 200px;
  justify-content: center;
  align-items: center;
}

獲取繪製的座標

getlatLngs() {
  //pm:drawstart 開始第一個點的時候調用
  //pm:drawend  禁止繪製時調用
  //pm:create  創建完成時調用
  this.map.on("pm:drawstart", e => {
    console.log(e, "first");
  });
  this.map.on("pm:drawend", e => {
    console.log(e, "禁止繪製");
  });
  this.map.on("pm:create", e => {
    console.log(e, "繪製完成時調用");
    console.log(e.layer._latlngs[0], "繪製座標")
  });
},

編輯功能

繪製完成添加可編輯功能

layer爲需要改變的圖層

layer.pm.enable({
    allowSelfIntersection: false, 
    preventMarkerRemoval: false,  // 禁止右鍵刪除點
});

監聽編輯事件

layer.on('pm:edit', e => {
    console.log(e, "拖動");
    console.log(e.target._latlngs[0], "拖動後的座標")
});
layer.on('pm:edit', e => {
    console.log(e, "拖動");
    console.log(e.target._latlngs[0], "拖動後的座標")
});
layer.on('pm:vertexadded', e =>{
    console.log(e, "添加頂點")
});

全局編輯開啓關閉

 // 開啓全體編輯按鈕
map.pm.toggleGlobalEditMode();

// 禁用全局編輯按鈕
map.pm.disableGlobalEditMode()


// 全局編輯切換
map.pm.toggleGlobalEditMode()

// 判斷是否全局編輯,有返回值
map.pm.globalEditEnabled()

拖動

map.pm.toggleGlobalDragMode()
// 是否啓用全局拖動模式
alert(map.pm.globalDragModeEnabled())

刪除

map.pm.toggleGlobalRemovalMode();

切割

//開啓
map.pm.Draw.Cut.enable({
    allowSelfIntersection: false
});

// 關閉
map.pm.Draw.Cut.disable()

// 切換
map.pm.Draw.Cut.toggle();

// 監聽切割事件
layer.on("pm:cut", e =>{
     console.log(e, "切割");
})

後期會把全部源碼上傳到碼雲或CSDN資源