根据ngx-leaflet文档link (leafletMapMoveEnd)
和(leafletMapZoomEnd)
都是公开事件。
我假设这些事件在与地图初始化相同的DOM中公开,并且应该这样实现:
<div
leaflet
[leafletOptions]="options"
(leafletMapReady)="onMapReady($event)"
(leafletMapMoveEnd)="onMapMove($event)"
(leafletMapZoomEnd)="onMapZoom($event)">
这是捕获这些事件的正确方法吗?
(leafletMapReady)
似乎工作正常。
但是当我弄乱地图本身时,(leafletMapZoomEnd)
或(leafletMapMoveEnd)
似乎都没有触发。
我尝试平移地图以及放大和缩小。这些交互都不会导致点击handleMapZoomEnd($event)
handleMapMoveEnd($event)
方法。
import { Component, Input, OnChanges, OnInit, Output, EventEmitter } from '@angular/core';
import * as fromLeafLet from 'leaflet';
import 'leaflet.markercluster';
@Component({
selector: 'map',
templateUrl: './map.component.html',
styleUrls: [
'./map.component.css',
'./extra-marker-icon.css'
]
})
export class MapComponent implements OnInit, OnChanges {
constructor(){}
onMapReady(map: fromLeafLet.Map): void {
this.map = map;
}
onMapZoom(event: any):void{
console.log('Zoom');
this.onMapDirty.emit();
}
onMapMove(event: any):void{
console.log('Move');
this.onMapDirty.emit();
}
}
答案 0 :(得分:2)
在用于{asymmetrik / ngx-leaflet ngcli教程的Github repo中,我添加了一个分支demo/events
,该分支显示了一个使用zoom / move事件的非常简单的示例。
git clone git@github.com:Asymmetrik/ngx-leaflet-tutorial-ngcli.git
git checkout demo/events
感兴趣的文件是:
./src/app/app.component.html
./src/app/app.component.ts
模板(如下)包含两个处理程序,每个letletletMapMoveEnd和leafletMapZoomEnd输出一个:
<div class="map"
leaflet
[leafletOptions]="options"
(leafletMapReady)="onMapReady($event)"
(leafletMapMoveEnd)="handleMapMoveEnd($event)"
(leafletMapZoomEnd)="handleMapZoomEnd($event)"
></div>
组件(下面)仅在这些事件上打印到控制台。我删除了演示事件正常运行所需的所有内容。
import { Component } from '@angular/core';
import * as L from 'leaflet';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: [
'./app.component.css'
]
})
export class AppComponent {
streetMaps = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
detectRetina: true,
attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
});
map: L.Map;
options = {
layers: [ this.streetMaps ],
zoom: 7,
center: L.latLng([ 46.879966, -121.726909 ])
};
onMapReady(map: L.Map): void {
this.map = map;
}
handleMapZoomEnd(map: L.Map):void{
console.log('onMapZoomEnd');
}
handleMapMoveEnd(map: L.Map):void{
console.log('onMapMoveEnd');
}
}