Aw5739 Add ngx openlayers

projects/ngx-openlayers/src/lib/styles/stroke.component.ts

@@ -0,0 +1,95 @@
+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: string;
+  @Input()
+  lineDash: number[];
+  @Input()
+  lineJoin: string;
+  @Input()
+  miterLimit: number;
+  @Input()
+  width: number;
+
+  instance: Stroke;
+  /* the typings do not have the setters */
+  host: /*StyleComponent|StyleCircleComponent|StyleTextComponent*/ any;
+
+  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.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);
+  }
+}