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

116 lines
2.7 KiB
TypeScript

import {
AfterContentInit,
Component,
ContentChild,
EventEmitter,
forwardRef,
Host,
Input,
OnChanges,
Optional,
Output,
SimpleChanges,
} from '@angular/core';
import { Size } from 'ol/size';
import { XYZ } from 'ol/source';
import { TileSourceEvent } from 'ol/source/Tile';
import { LoadFunction, UrlFunction } from 'ol/Tile';
import TileGrid from 'ol/tilegrid/TileGrid';
import { LayerTileComponent } from '../layers/layertile.component';
import { TileGridComponent } from '../tilegrid.component';
import { SourceComponent } from './source.component';
@Component({
selector: 'aol-source-xyz',
template: ` <ng-content></ng-content> `,
providers: [{ provide: SourceComponent, useExisting: forwardRef(() => SourceXYZComponent) }],
})
export class SourceXYZComponent extends SourceComponent implements AfterContentInit, OnChanges {
@Input()
cacheSize: number;
@Input()
crossOrigin: string;
@Input()
opaque: boolean;
@Input()
projection: string;
@Input()
reprojectionErrorThreshold: number;
@Input()
minZoom: number;
@Input()
maxZoom: number;
@Input()
tileGrid: TileGrid;
@Input()
tileLoadFunction?: LoadFunction;
@Input()
tilePixelRatio: number;
@Input()
tileSize: number | Size;
@Input()
tileUrlFunction?: UrlFunction;
@Input()
url: string;
@Input()
urls: string[];
@Input()
wrapX: boolean;
@ContentChild(TileGridComponent, { static: false })
tileGridXYZ: TileGridComponent;
@Output()
tileLoadStart = new EventEmitter<TileSourceEvent>();
@Output()
tileLoadEnd = new EventEmitter<TileSourceEvent>();
@Output()
tileLoadError = new EventEmitter<TileSourceEvent>();
instance: XYZ;
constructor(
@Optional()
@Host()
protected layer?: LayerTileComponent
) {
super(layer);
}
ngAfterContentInit() {
if (this.tileGridXYZ) {
this.tileGrid = this.tileGridXYZ.instance;
}
this.init();
}
ngOnChanges(changes: SimpleChanges) {
const properties: { [index: string]: any } = {};
if (!this.instance) {
return;
}
for (const key in changes) {
if (changes.hasOwnProperty(key)) {
properties[key] = changes[key].currentValue;
}
}
this.instance.setProperties(properties, false);
if (changes.hasOwnProperty('url')) {
this.init();
}
}
init() {
this.instance = new XYZ(this);
this.instance.on('tileloadstart', (event: TileSourceEvent) => this.tileLoadStart.emit(event));
this.instance.on('tileloadend', (event: TileSourceEvent) => this.tileLoadEnd.emit(event));
this.instance.on('tileloaderror', (event: TileSourceEvent) => this.tileLoadError.emit(event));
this.register(this.instance);
}
}