FarmMapsLib/projects/ng-openlayers/src/lib/coordinate.component.ts

81 lines
2.4 KiB
TypeScript

import { Component, Optional, OnChanges, Input, SimpleChanges, OnInit } from '@angular/core';
import { transform } from 'ol/proj';
import { MapComponent } from './map.component';
import { GeometryPointComponent } from './geom/geometrypoint.component';
import { GeometryCircleComponent } from './geom/geometrycircle.component';
import { ViewComponent } from './view.component';
import { OverlayComponent } from './overlay.component';
@Component({
selector: 'aol-coordinate',
template: ` <div class="aol-coordinate"></div> `,
})
export class CoordinateComponent implements OnChanges, OnInit {
@Input()
x: number;
@Input()
y: number;
@Input()
srid = 'EPSG:3857';
private host: any;
private mapSrid = 'EPSG:3857';
constructor(
private map: MapComponent,
@Optional() viewHost: ViewComponent,
@Optional() geometryPointHost: GeometryPointComponent,
@Optional() geometryCircleHost: GeometryCircleComponent,
@Optional() overlayHost: OverlayComponent
) {
// console.log('instancing aol-coordinate');
if (geometryPointHost !== null) {
this.host = geometryPointHost;
} else if (geometryCircleHost !== null) {
this.host = geometryCircleHost;
} else if (viewHost !== null) {
this.host = viewHost;
} else if (overlayHost !== null) {
this.host = overlayHost;
}
}
ngOnInit() {
this.map.instance.on('change:view', (e) => this.onMapViewChanged(e));
this.mapSrid = this.map.instance.getView().getProjection().getCode();
this.transformCoordinates();
}
ngOnChanges(changes: SimpleChanges) {
this.transformCoordinates();
}
private onMapViewChanged(event) {
this.mapSrid = event.target.get(event.key).getProjection().getCode();
this.transformCoordinates();
}
private transformCoordinates() {
let transformedCoordinates: number[];
if (this.srid === this.mapSrid) {
transformedCoordinates = [this.x, this.y];
} else {
transformedCoordinates = transform([this.x, this.y], this.srid, this.mapSrid);
}
switch (this.host.componentType) {
case 'geometry-point':
this.host.instance.setCoordinates(transformedCoordinates);
break;
case 'geometry-circle':
case 'view':
this.host.instance.setCenter(transformedCoordinates);
break;
case 'overlay':
this.host.instance.setPosition(transformedCoordinates);
break;
}
}
}