视频标注
TIP
视频标注示例。
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 L from "leaflet";
import { ATTRIBUTIONS } from "../../../constants";
let map: L.Map | null = null;
const initMap = () => {
//定义视频图层
let videolayer: L.VideoOverlay | null;
//视频文件路径
const videoUrl = "https://www.mapbox.com/bites/00188/patricia_nasa.webm";
//视频添加的地图范围
const videoBounds: [[number, number], [number, number]] = [
[30.5207, 114.3938],
[30.5227, 114.3958],
];
//地图容器
map = L.map("map", {
//参考坐标系
crs: L.CRS.EPSG3857,
//显示中心
center: [30.5217, 114.3948],
//最小显示等级
minZoom: 1,
//最大显示等级
maxZoom: 18,
//当前显示等级
zoom: 18,
//取消鼠标双击缩放
doubleClickZoom: false,
});
//加载天地图矢量图层
L.tileLayer(
"http://t0.tianditu.gov.cn/DataServer?T=vec_w&x={x}&y={y}&l={z}&tk=55b4d4eaef95384c946e9bd1b99c5610",
{ noWrap: true, attribution: ATTRIBUTIONS }
).addTo(map);
//加载天地图矢量注记图层
L.tileLayer(
"http://t0.tianditu.gov.cn/DataServer?T=cva_w&x={x}&y={y}&l={z}&tk=55b4d4eaef95384c946e9bd1b99c5610",
{ noWrap: true, attribution: ATTRIBUTIONS }
).addTo(map);
//添加播放图标
const playIcon = L.icon({
//图标地址
iconUrl: "/image/play.png",
//图标大小
iconSize: [70, 70],
});
//添加图片标注(播放)
const playMarker = L.marker([30.5217, 114.3948], {
//添加图标
icon: playIcon,
}).addTo(map);
//添加取消播放图标
const stopIcon = L.icon({
//图标地址
iconUrl: "/image/stop-playing.png",
//图标大小
iconSize: [40, 40],
});
//添加图片标注(取消播放)
const stopMarker = L.marker([30.5217, 114.3948], {
//添加图标
icon: stopIcon,
});
/**鼠标单击事件
* @param {string} type 事件类型(鼠标单击)
* @param {function} fn 事件触发后的响应函数
*/
playMarker.on("click", function () {
if (!map) return;
//添加视频图层至地图中显示
videolayer = L.videoOverlay(videoUrl, videoBounds);
map.addLayer(videolayer);
//移除播放标注
map.removeLayer(playMarker);
//添加取消播放标注
map.addLayer(stopMarker);
});
/**鼠标单击事件
* @param {string} type 事件类型(鼠标单击)
* @param {function} fn 事件触发后的响应函数
*/
stopMarker.on("click", function () {
if (!map || !videolayer) return;
//将地图中的视频图层移除
map.removeLayer(videolayer);
//移除取消播放标注
map.removeLayer(stopMarker);
//添加播放标注
map.addLayer(playMarker);
videolayer = null;
});
};
onMounted(() => {
initMap();
});
// 销毁地图
onBeforeUnmount(() => {
if (map) {
map.remove();
map = null;
}
});
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
#map {
height: 650px;
color: #3a3a3a;
}
:deep(video) {
max-width: initial;
}
</style>