angular-cesium
Version:
Angular library for working with Cesium.
99 lines (98 loc) • 12 kB
JavaScript
import { ChangeDetectionStrategy, Component, ElementRef, Input, Output, EventEmitter } from '@angular/core';
import { fromEvent as observableFromEvent } from 'rxjs';
import { switchMap, takeUntil, tap } from 'rxjs/operators';
import { CesiumService } from '../../../../angular-cesium/services/cesium/cesium.service';
/**
* Toolbar widget, act as a container for ac-toolbar-button components
* allowing drag configuration and passing `toolbarClass` as attributes
*
* Usage:
* ```
* <ac-toolbar [allowDrag]="true" (onDrag)="handleDrag($event)">
<ac-toolbar-button [iconUrl]="'assets/home-icon.svg'" (onClick)="goHome()">
</ac-toolbar-button>
<ac-toolbar-button [iconUrl]="'assets/explore-icon.svg'" (onClick)="rangeAndBearing()">
</ac-toolbar-button>
</ac-toolbar>
* ```
*
*/
export class AcToolbarComponent {
constructor(element, cesiumService) {
this.element = element;
this.cesiumService = cesiumService;
this.allowDrag = true;
this.onDrag = new EventEmitter();
this.dragStyle = {
'height.px': 20,
'width.px': 20,
};
}
ngOnInit() {
this.cesiumService.getMap().getMapContainer().appendChild(this.element.nativeElement);
if (this.allowDrag) {
this.listenForDragging();
}
}
ngOnChanges(changes) {
if (changes.allowDrag && changes.allowDrag.currentValue && !changes.allowDrag.previousValue) {
this.listenForDragging();
}
if (changes.allowDrag && !changes.allowDrag.currentValue && changes.allowDrag.previousValue) {
this.dragSubscription.unsubscribe();
}
}
ngOnDestroy() {
if (this.dragSubscription) {
this.dragSubscription.unsubscribe();
}
}
listenForDragging() {
this.mouseDown$ = this.mouseDown$ || observableFromEvent(this.element.nativeElement, 'mousedown');
this.mouseMove$ = this.mouseMove$ || observableFromEvent(document, 'mousemove');
this.mouseUp$ = this.mouseUp$ || observableFromEvent(document, 'mouseup');
this.drag$ = this.drag$ ||
this.mouseDown$.pipe(switchMap(() => this.mouseMove$.pipe(tap(this.onDrag.emit), takeUntil(this.mouseUp$))));
this.dragSubscription = this.drag$.subscribe((event) => {
this.element.nativeElement.style.left = `${event.x}px`;
this.element.nativeElement.style.top = `${event.y}px`;
});
}
}
AcToolbarComponent.decorators = [
{ type: Component, args: [{
selector: 'ac-toolbar',
template: `
<div class="{{toolbarClass}}">
<div *ngIf="allowDrag">
<ac-toolbar-button>
<ac-drag-icon></ac-drag-icon>
</ac-toolbar-button>
</div>
<ng-content></ng-content>
</div>
`,
changeDetection: ChangeDetectionStrategy.OnPush,
styles: [`
:host {
position: absolute;
top: 20px;
left: 20px;
width: 20px;
height: 20px;
z-index: 999;
-webkit-user-drag: none;
}
`]
},] }
];
AcToolbarComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: CesiumService }
];
AcToolbarComponent.propDecorators = {
toolbarClass: [{ type: Input }],
allowDrag: [{ type: Input }],
onDrag: [{ type: Output }]
};
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{\r\n  ChangeDetectionStrategy,\r\n  Component,\r\n  ElementRef,\r\n  Input,\r\n  OnDestroy,\r\n  OnInit,\r\n  OnChanges,\r\n  SimpleChanges,\r\n  Output,\r\n  EventEmitter\r\n} from '@angular/core';\r\nimport { fromEvent as observableFromEvent, Subscription, Observable } from 'rxjs';\r\nimport { switchMap, takeUntil, tap } from 'rxjs/operators';\r\nimport { CesiumService } from '../../../../angular-cesium/services/cesium/cesium.service';\r\n\r\n\r\n/**\r\n * Toolbar widget, act as a container for ac-toolbar-button components\r\n * allowing drag configuration and passing `toolbarClass` as attributes\r\n *\r\n * Usage:\r\n * ```\r\n * <ac-toolbar [allowDrag]=\"true\" (onDrag)=\"handleDrag($event)\">\r\n <ac-toolbar-button [iconUrl]=\"'assets/home-icon.svg'\" (onClick)=\"goHome()\">\r\n </ac-toolbar-button>\r\n <ac-toolbar-button [iconUrl]=\"'assets/explore-icon.svg'\" (onClick)=\"rangeAndBearing()\">\r\n </ac-toolbar-button>\r\n </ac-toolbar>\r\n * ```\r\n *\r\n */\r\n@Component(\r\n  {\r\n    selector: 'ac-toolbar',\r\n    template: `\r\n        <div class=\"{{toolbarClass}}\">\r\n            <div *ngIf=\"allowDrag\">\r\n                <ac-toolbar-button>\r\n                    <ac-drag-icon></ac-drag-icon>\r\n                </ac-toolbar-button>\r\n            </div>\r\n\r\n            <ng-content></ng-content>\r\n        </div>\r\n    `,\r\n    styles: [`\r\n        :host {\r\n            position: absolute;\r\n            top: 20px;\r\n            left: 20px;\r\n            width: 20px;\r\n            height: 20px;\r\n            z-index: 999;\r\n            -webkit-user-drag: none;\r\n        }\r\n    `],\r\n    changeDetection: ChangeDetectionStrategy.OnPush,\r\n  }\r\n)\r\nexport class AcToolbarComponent implements OnInit, OnChanges, OnDestroy {\r\n  @Input()\r\n  toolbarClass: string;\r\n  @Input()\r\n  allowDrag = true;\r\n  @Output()\r\n  onDrag = new EventEmitter<MouseEvent>();\r\n\r\n  dragStyle = {\r\n    'height.px': 20,\r\n    'width.px': 20,\r\n  };\r\n\r\n  private mouseDown$: Observable<MouseEvent>;\r\n  private mouseMove$: Observable<MouseEvent>;\r\n  private mouseUp$: Observable<MouseEvent>;\r\n  private drag$: Observable<MouseEvent>;\r\n  private dragSubscription: Subscription;\r\n\r\n  constructor(private element: ElementRef, private cesiumService: CesiumService) {}\r\n\r\n  ngOnInit() {\r\n    this.cesiumService.getMap().getMapContainer().appendChild(this.element.nativeElement);\r\n    if (this.allowDrag) {\r\n      this.listenForDragging();\r\n    }\r\n  }\r\n\r\n\r\n  ngOnChanges(changes: SimpleChanges) {\r\n    if (changes.allowDrag && changes.allowDrag.currentValue && !changes.allowDrag.previousValue) {\r\n      this.listenForDragging();\r\n    }\r\n\r\n    if (changes.allowDrag && !changes.allowDrag.currentValue && changes.allowDrag.previousValue) {\r\n      this.dragSubscription.unsubscribe();\r\n    }\r\n  }\r\n\r\n  ngOnDestroy(): void {\r\n    if (this.dragSubscription) {\r\n      this.dragSubscription.unsubscribe();\r\n    }\r\n  }\r\n\r\n  private listenForDragging() {\r\n    this.mouseDown$ = this.mouseDown$ || observableFromEvent(this.element.nativeElement, 'mousedown');\r\n    this.mouseMove$ = this.mouseMove$ || observableFromEvent(document, 'mousemove') as Observable<MouseEvent>;\r\n    this.mouseUp$ = this.mouseUp$ || observableFromEvent(document, 'mouseup') as Observable<MouseEvent>;\r\n\r\n    this.drag$ = this.drag$ ||\r\n                 this.mouseDown$.pipe(\r\n                    switchMap(() => this.mouseMove$.pipe(\r\n                      tap(this.onDrag.emit),\r\n                      takeUntil(this.mouseUp$)\r\n                    ))\r\n                 );\r\n\r\n    this.dragSubscription = this.drag$.subscribe((event: MouseEvent) => {\r\n      this.element.nativeElement.style.left = `${event.x}px`;\r\n      this.element.nativeElement.style.top = `${event.y}px`;\r\n    });\r\n  }\r\n}\r\n"]}