scandit-web-datacapture-core/build/js/chunks/chunk-457L5N2F.js

Scandit Data Capture SDK for the Web

import { b } from './chunk-QBDQQMQ5.js';
import { b as b$1 } from './chunk-LA6TM76R.js';

var d=(e=>(e.Nonzero="nonzero",e.Evenodd="evenodd",e))(d||{}),n=class n extends b{constructor(e){super();this._context=null;this.isNextDrawPending=!1;this.latestCommands=new Uint8Array([]);this.canvas=e,this.doDrawLoop=this.doDraw.bind(this);}get context(){if(!this._context&&(this._context=this.canvas.getContext("2d"),!this._context))throw new TypeError("CanvasRenderingContext cannot be retrieved.");return this._context}draw(e){if(this.latestCommands=e,!this.isCanvasReady()){this.postponeDraw();return}this.isNextDrawPending||(this.isNextDrawPending=!0,requestAnimationFrame(this.doDrawLoop));}updateCanvasSizeAttributes(e,s,t=window.devicePixelRatio){let i=Math.round(e*t),r=Math.round(s*t);(i!==this.canvas.width||r!==this.canvas.height)&&(this.canvas.width=i,this.canvas.height=r,this.context.scale(t,t));}startObservingCanvasResize(){if(!this.resizeObserver){if(!n.ResizeObserver)throw new Error("PrivateCanvasDrawer.ResizeObserver is not set");this.resizeObserver=new n.ResizeObserver(e=>{var r;let[s]=e,{width:t,height:i}=(r=s.contentRect)!=null?r:this.canvas;t===0||i===0||(this.updateCanvasSizeAttributes(t,i),this.latestCommands.length!==0&&(this.draw(this.latestCommands),this.latestCommands=new Uint8Array([])));}),this.resizeObserver.observe(this.canvas);}}endObservingCanvasResize(){this.resizeObserver&&this.resizeObserver.unobserve(this.canvas);}doDraw(){this.context.clearRect(0,0,this.canvas.width,this.canvas.height);let e=new b$1(this.latestCommands);for(;!e.isConsumed();){let s=e.extractCommandType();this.drawSingleCommand(s,e);}this.isNextDrawPending=!1;}postponeDraw(){this.startObservingCanvasResize();}isCanvasReady(){return this.canvas.width>0&&this.canvas.height>0}};n.ResizeObserver="ResizeObserver"in globalThis?globalThis.ResizeObserver:void 0;var h=n;

export { d as a, h as b };