@arcgis/core/views/input/handlers/MultiTouch.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/* COPYRIGHT Esri - https://js.arcgis.com/5.0.8/LICENSE.txt */
import{signal as t}from"../../../core/signal.js";import{InputHandler as e}from"../InputHandler.js";class i extends e{get multiTouchActive(){return this._multiTouchActive.value}constructor(){super(!0),this._activeTouchPointerIds=new Set,this._multiTouchActive=t(!1),this._onPointerAdd=({data:t})=>{"touch"===t.pointerType&&(this._activeTouchPointerIds.add(t.native.pointerId),this._update())},this._onPointerRemove=({data:t})=>{"touch"===t.pointerType&&(this._activeTouchPointerIds.delete(t.native.pointerId),this._update())},this.registerIncoming("pointer-down",this._onPointerAdd),this.registerIncoming("pointer-up",this._onPointerRemove),this.registerIncoming("pointer-capture-lost",this._onPointerRemove),this.registerIncoming("pointer-cancel",this._onPointerRemove)}_update(){this._multiTouchActive.value=this._activeTouchPointerIds.size>1}}export{i as MultiTouch};