angular - Angular2 - Hur man ställer in en google.maps.OverlayView? (översätt JS-prototyp till Typescript)

Jag skulle vilja skapa en Google Maps-komponent som fungerar så här: https://jsfiddle.net/gvvy5vxz/2/

Det är baserat på detta: https://developers.google.com/maps/documentation/javascript/examples/overlay-simple

Jag är ny på TypeScript och jag har fastnat med prototypsimplementeringen, särskilt med denna JS-snutt:

USGSOverlay.prototype = new google.maps.OverlayView();

USGSOverlay(bounds, image, map) {

    // Initialize all properties.
    this.bounds_ = bounds;
    this.image_ = image;
    this.map_ = map;

    // Define a property to hold the image's div. We'll
    // actually create this div upon receipt of the onAdd()
    // method so we'll leave it null for now.
    this.div_ = null;

    // Explicitly call setMap on this overlay.
    this.setMap(map);
  }

Jag har ingen aning om hur man översätter det på ett TypeScript-sätt och hur man deklarerar saker korrekt.

Jag antar att jag borde skapa en klass USGSOverlay som utökar google.maps.OverlayView men det fungerar inte.

class USGSOverlay extends google.maps.OverlayView{

  bounds_;
  image_;
  map_;
  div_;

  constructor(bounds, image, map){
    // Initialize all properties.
    this.bounds_ = bounds;
    this.image_ = image;
    this.map_ = map;

    // Define a property to hold the image's div. We'll
    // actually create this div upon receipt of the onAdd()
    // method so we'll leave it null for now.
    this.div_ = null;

    // Explicitly call setMap on this overlay.
    this.setMap(map);
  }
}

Detta är min arbetsbas komponent. Den skapar en enkel karta inuti #map:

import { Component } from '@angular/core';
declare const google: any;
/*
/*  Component Map
*/
@Component({
  selector: 'map',
  template: `
    <div id="map"></div>
  `,
  styles: [
    `#map{ width:100%; height:100%; position: absolute; width:100%; height:100%; top:0; left:0;}`
  ],
})
export class MapComponent {

  ngOnInit(){
    google.maps.event.addDomListener(window, 'load', this.initMap);
  }

  initMap() {

    const map = new google.maps.Map(document.getElementById('map'), {
      zoom: 11,
      center: {lat: 62.323907, lng: -150.109291},
      mapTypeId: google.maps.MapTypeId.SATELLITE
    });

    const bounds = new google.maps.LatLngBounds(
        new google.maps.LatLng(62.281819, -150.287132),
        new google.maps.LatLng(62.400471, -150.005608));
  }
}

Svar #1

Här är vad som fungerade för mig (med Ionic 2):

  1. Använd dessa kommandon:

    npm install typings --global
typings install dt~google.maps --global --save
typings install google.maps --global

  2. Lägg till "typings/*.d.ts" i din tsconfig.json:

    "include": [
  "src/**/*.ts",
  "typings/*.d.ts"
]

  3. Här är TypeScript-koden:

    import { Component, ViewChild, ElementRef } from '@angular/core';
import { NavController } from 'ionic-angular';
// import typings
import { } from '@types/googlemaps';
/*
/*  Component Map
*/
@Component({
    selector: 'page-overlay',
    templateUrl: 'overlay.html'
})
export class OverlayPage {
    @ViewChild('map') mapElement: ElementRef;
    map: any;
    // weird syntax, I know, but it works
    constructor(public navCtrl: NavController) {
    }
    USGSOverlay = class extends google.maps.OverlayView {
        bounds_: any;
        image_: any;
        map_: any;
        div_: any;
        constructor(bounds, image, private map) {
            super();
            // Initialize all properties.
            this.bounds_ = bounds;
            this.image_ = image;
            this.map_ = map;
            // Define a property to hold the image's div. We'll
            // actually create this div upon receipt of the onAdd()
            // method so we'll leave it null for now.
            this.div_ = null;
            // Explicitly call setMap on this overlay.
            this.setMap(map);
            this.set
        }
        /**
         * onAdd is called when the map's panes are ready and the overlay has been
         * added to the map.
         */
        onAdd() {
            const div = document.createElement('div');
            div.style.borderStyle = 'none';
            div.style.borderWidth = '0px';
            div.style.position = 'absolute';
            // Create the img element and attach it to the div.
            const img = document.createElement('img');
            img.src = this.image_;
            img.style.width = '100%';
            img.style.height = '100%';
            img.style.position = 'absolute';
            div.appendChild(img);
            this.div_ = div;
            // Add the element to the "overlayLayer" pane.
            const panes = this.getPanes();
            panes.overlayLayer.appendChild(div);
        };
        draw() {
            // We use the south-west and north-east
            // coordinates of the overlay to peg it to the correct position and size.
            // To do this, we need to retrieve the projection from the overlay.
            const overlayProjection = this.getProjection();
            // Retrieve the south-west and north-east coordinates of this overlay
            // in LatLngs and convert them to pixel coordinates.
            // We'll use these coordinates to resize the div.
            const sw = overlayProjection.fromLatLngToDivPixel(this.bounds_.getSouthWest());
            const ne = overlayProjection.fromLatLngToDivPixel(this.bounds_.getNorthEast());
            // Resize the image's div to fit the indicated dimensions.
            const div = this.div_;
            div.style.left = sw.x + 'px';
            div.style.top = ne.y + 'px';
            div.style.width = (ne.x - sw.x) + 'px';
            div.style.height = (sw.y - ne.y) + 'px';
        };
        // The onRemove() method will be called automatically from the API if
        // we ever set the overlay's map property to 'null'.
        onRemove() {
            this.div_.parentNode.removeChild(this.div_);
            this.div_ = null;
        };
    };
    ngOnInit() {
        this.loadMap();
        var bounds = new google.maps.LatLngBounds(
            new google.maps.LatLng(62.281819, -150.287132),
            new google.maps.LatLng(62.400471, -150.005608));
        // The photograph is courtesy of the U.S. Geological Survey.
        var srcImage = 'https://developers.google.com/maps/documentation/' +
            'javascript/examples/full/images/talkeetna.png';
        const overlay = new this.USGSOverlay(bounds, srcImage, this.map);
        //overlay.setMap(this.map);
    }
    ionViewDidLoad() {
        this.loadMap();
        var bounds = new google.maps.LatLngBounds(
            new google.maps.LatLng(62.281819, -150.287132),
            new google.maps.LatLng(62.400471, -150.005608));
        // The photograph is courtesy of the U.S. Geological Survey.
        var srcImage = 'https://developers.google.com/maps/documentation/' +
            'javascript/examples/full/images/talkeetna.png';
        const overlay = new this.USGSOverlay(bounds, srcImage, this.map);
        //overlay.setMap(this.map);
    }
    loadMap() {        
        let latLng = new google.maps.LatLng(62.323907, -150.109291);
        var mapOptions = {
            zoom :15,
            center : latLng,
            enableHighAccuracy: true,
            timeout: 5000,
            maximumAge: 0
        };
        this.map = new google.maps.Map(this.mapElement.nativeElement, mapOptions);
    }
}

Svar #2

Jag var på rätt väg, det fungerar...

import { Component } from '@angular/core';
declare const google: any;

class USGSOverlay extends google.maps.OverlayView{

  bounds_;
  image_;
  map_;
  div_;

  constructor(bounds, image, map){
    // Initialize all properties.
    this.bounds_ = bounds;
    this.image_ = image;
    this.map_ = map;

    // Define a property to hold the image's div. We'll
    // actually create this div upon receipt of the onAdd()
    // method so we'll leave it null for now.
    this.div_ = null;

    // Explicitly call setMap on this overlay.
    this.setMap(map);
  }

  /**
   * onAdd is called when the map's panes are ready and the overlay has been
   * added to the map.
   */
  onAdd(){
    const div = document.createElement('div');
    div.style.borderStyle = 'none';
    div.style.borderWidth = '0px';
    div.style.position = 'absolute';

    // Create the img element and attach it to the div.
    const img = document.createElement('img');
    img.src = this.image_;
    img.style.width = '100%';
    img.style.height = '100%';
    img.style.position = 'absolute';
    div.appendChild(img);

    this.div_ = div;

    // Add the element to the "overlayLayer" pane.
    const panes = this.getPanes();
    panes.overlayLayer.appendChild(div);
  };

  draw(){

    // We use the south-west and north-east
    // coordinates of the overlay to peg it to the correct position and size.
    // To do this, we need to retrieve the projection from the overlay.
    const overlayProjection = this.getProjection();

    // Retrieve the south-west and north-east coordinates of this overlay
    // in LatLngs and convert them to pixel coordinates.
    // We'll use these coordinates to resize the div.
    const sw = overlayProjection.fromLatLngToDivPixel(this.bounds_.getSouthWest());
    const ne = overlayProjection.fromLatLngToDivPixel(this.bounds_.getNorthEast());

    // Resize the image's div to fit the indicated dimensions.
    const div = this.div_;
    div.style.left = sw.x + 'px';
    div.style.top = ne.y + 'px';
    div.style.width = (ne.x - sw.x) + 'px';
    div.style.height = (sw.y - ne.y) + 'px';
  };

  // The onRemove() method will be called automatically from the API if
  // we ever set the overlay's map property to 'null'.
  onRemove(){
    this.div_.parentNode.removeChild(this.div_);
    this.div_ = null;
  };
};



/*
/*  Component Map
*/
@Component({
  selector: 'map',
  template: `
    <div id="map"></div>
  `,
  styles: [
    `#map{ width:100%; height:100%; position: absolute; width:100%; height:100%; top:0; left:0;}`
  ],
})
export class MapComponent {

  overlay;

  ngOnInit(){
    google.maps.event.addDomListener(window, 'load', this.initMap);
  }

  initMap() {

    const map = new google.maps.Map(document.getElementById('map'), {
      zoom: 11,
      center: {lat: 62.323907, lng: -150.109291},
      mapTypeId: google.maps.MapTypeId.SATELLITE
    });

    const bounds = new google.maps.LatLngBounds(
        new google.maps.LatLng(62.281819, -150.287132),
        new google.maps.LatLng(62.400471, -150.005608));

    // The photograph is courtesy of the U.S. Geological Survey.
    const srcImage = 'https://developers.google.com/maps/documentation/' +
        'javascript/examples/full/images/talkeetna.png';

    // The custom USGSOverlay object contains the USGS image,
    // the bounds of the image, and a reference to the map.
    this.overlay = new USGSOverlay(bounds, srcImage, map);
  }
}

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