FarmMapsLib/projects/ng-openlayers/src/lib/styles/stroke.component.ts

96 lines
2.9 KiB
TypeScript

import { Component, Input, Optional, OnInit, OnChanges, SimpleChanges } from '@angular/core';
import { Stroke } from 'ol/style';
import { StyleComponent } from './style.component';
import { StyleCircleComponent } from './circle.component';
import { StyleTextComponent } from './text.component';
import { Color } from 'ol/color';
import { ColorLike } from 'ol/colorlike';
@Component({
selector: 'aol-style-stroke',
template: ` <div class="aol-style-stroke"></div> `,
})
export class StyleStrokeComponent implements OnInit, OnChanges {
@Input()
color: Color | ColorLike;
@Input()
lineCap: CanvasLineCap | undefined;
@Input()
lineDash: number[];
@Input()
lineJoin: CanvasLineJoin | undefined;
@Input()
miterLimit: number;
@Input()
width: number;
public instance: Stroke;
/* the typings do not have the setters */
private readonly host: StyleComponent | StyleCircleComponent | StyleTextComponent;
constructor(
@Optional() styleHost: StyleComponent,
@Optional() styleCircleHost: StyleCircleComponent,
@Optional() styleTextHost: StyleTextComponent
) {
if (!styleHost) {
throw new Error('aol-style-stroke must be a descendant of aol-style');
}
if (!!styleTextHost) {
this.host = styleTextHost;
} else if (!!styleCircleHost) {
this.host = styleCircleHost;
} else {
this.host = styleHost;
}
// console.log('creating aol-style-stroke with: ', this);
}
ngOnInit() {
// console.log('creating ol.style.Stroke instance with: ', this);
this.instance = new Stroke(this);
switch (this.host.componentType) {
case 'style':
this.host.instance.setStroke(this.instance);
// console.log('setting ol.style instance\'s stroke:', this.host);
break;
case 'style-text':
this.host.instance.setStroke(this.instance);
break;
case 'style-circle':
(this.host as StyleCircleComponent).stroke = this.instance;
// console.log('setting ol.style.circle instance\'s stroke:', this.host);
break;
default:
throw new Error('unknown host type: ' + this.host);
// break;
}
}
ngOnChanges(changes: SimpleChanges) {
if (!this.instance) {
return;
}
if (changes.color) {
this.instance.setColor(changes.color.currentValue);
}
if (changes.lineCap) {
this.instance.setLineCap(changes.lineCap.currentValue);
}
if (changes.lineDash) {
this.instance.setLineDash(changes.lineDash.currentValue);
}
if (changes.lineJoin) {
this.instance.setLineJoin(changes.lineJoin.currentValue);
}
if (changes.miterLimit) {
this.instance.setMiterLimit(changes.miterLimit.currentValue);
}
if (changes.width) {
this.instance.setWidth(changes.width.currentValue);
}
this.host.update();
// console.log('changes detected in aol-style-stroke, setting new properties: ', changes);
}
}