FarmMapsLib/projects/ng-openlayers/src/lib/sources/imagewms.component.ts

75 lines
2.0 KiB
TypeScript

import {
Component,
Host,
Input,
OnChanges,
OnInit,
forwardRef,
SimpleChanges,
Output,
EventEmitter,
} from '@angular/core';
import { ImageWMS } from 'ol/source';
import { LayerImageComponent } from '../layers/layerimage.component';
import { SourceComponent } from './source.component';
import { ProjectionLike } from 'ol/proj';
import { AttributionLike } from 'ol/source/Source';
import { LoadFunction } from 'ol/Image';
import { ImageSourceEvent } from 'ol/source/Image';
import { ServerType } from 'ol/source/wms';
@Component({
selector: 'aol-source-imagewms',
template: ` <ng-content></ng-content> `,
providers: [{ provide: SourceComponent, useExisting: forwardRef(() => SourceImageWMSComponent) }],
})
export class SourceImageWMSComponent extends SourceComponent implements OnChanges, OnInit {
@Input()
attributions: AttributionLike;
@Input()
crossOrigin: string;
@Input()
hidpi: boolean;
@Input()
serverType: ServerType;
@Input()
imageLoadFunction?: LoadFunction;
@Input()
params: { [key: string]: any };
@Input()
projection: ProjectionLike | string;
@Input()
ratio: number;
@Input()
resolutions: Array<number>;
@Input()
url: string;
@Output()
imageLoadStart = new EventEmitter<ImageSourceEvent>();
@Output()
imageLoadEnd = new EventEmitter<ImageSourceEvent>();
@Output()
imageLoadError = new EventEmitter<ImageSourceEvent>();
instance: ImageWMS;
constructor(@Host() layer: LayerImageComponent) {
super(layer);
}
ngOnInit() {
this.instance = new ImageWMS(this);
this.host.instance.setSource(this.instance);
this.instance.on('imageloadstart', (event: ImageSourceEvent) => this.imageLoadStart.emit(event));
this.instance.on('imageloadend', (event: ImageSourceEvent) => this.imageLoadEnd.emit(event));
this.instance.on('imageloaderror', (event: ImageSourceEvent) => this.imageLoadError.emit(event));
}
ngOnChanges(changes: SimpleChanges) {
if (this.instance && changes.hasOwnProperty('params')) {
this.instance.updateParams(this.params);
}
}
}