HTMLdecoderQR/InstascanDemo.html at master · warintman/HTMLdecoderQR · GitHub

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<!-- saved from url=(0036)https://schmich.github.io/instascan/ -->
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Instascan &ndash; Demo</title>
  <link rel="icon" type="image/png" href="favicon.png">
  <link rel="stylesheet" href="style.css">

  </head>
  <body>
    <div id="app">
      <div class="sidebar">
        <section class="cameras">
          <h2>Cameras</h2>
          <ul id="ulCameras">
          </ul>
        </section>
        <section class="scans">
          <h2>Scans</h2>
          <ul id="scanUL">
            <li class="empty" style="display: block">No scans yet</li>
          </ul>
        </section>
      </div>
      <div class="preview-container">
        <video id="preview" style="width:100%; height: 100%"></video>
      </div>
    </div>

    <script type="text/javascript" src="instascan.min.js"></script>
    <script type="text/javascript">
var scanner = null;
var activeCameraId = null;

function RellenarEscaneo(scan_content) {
  //sectionScan
  document.getElementById('scanUL').children[0].style.display = 'none';
  var liElement = document.createElement('li');
  liElement.title = liElement.innerText = scan_content;
  liElement.className = 'scans-enter-active';
  document.getElementById('scanUL').appendChild(liElement);
}

function PonerNoCamaras() {
  var liElement = document.createElement('li');
  liElement.className='empty';
  liElement.innerText='No cameras found';
  document.getElementById('ulCameras').appendChild(liElement);
}

var cameras = [];
function RellenarCamaras() {
  //ulCameras
  if (cameras.length==0) {
    PonerNoCamaras();
  }
  else {
    cameras.forEach(function (item, index) {
      var liElement = document.createElement('li');
      var nombre = formatName(item.name);
      liElement.title = nombre;
      var spanElement = document.createElement('span');
      if (item.id == activeCameraId) {
        spanElement.className = 'active';
        spanElement.innerText = nombre;
      }
      else {
        var aElement = document.createElement('a');
        aElement.innerText = nombre;
        aElement.addEventListener("click", function (event) {
          selectCamera(item);
        });
        spanElement.appendChild(aElement);
      };
      liElement.appendChild(spanElement);
      document.getElementById('ulCameras').appendChild(liElement);
    });
  }
}

function ModificarListaCamaras(){
  var myNode = document.getElementById('ulCameras');
  while (myNode.firstChild) {
      myNode.removeChild(myNode.firstChild);
  }
  RellenarCamaras();
}

function formatName(name) {
      return name || '(unknown)';
    };

function selectCamera(camera) {
      activeCameraId = camera.id;
      scanner.camera = camera;
      scanner.start();
      ModificarListaCamaras();
    }

document.addEventListener("DOMContentLoaded", function (event) {

  try
  {
    scanner = new Instascan.Scanner({mirror: false, video: document.getElementById('preview'), scanPeriod: 5 });
    scanner.addListener('scan', function (content, image) {
      RellenarEscaneo(content);
      //scans.unshift({ date: +(Date.now()), content: content });
    });
    Instascan.Camera.getCameras().then(function (camerasdt) {
      //si no sale el nombre es porque no es un https
      if (camerasdt.length > 0) {
        cameras = camerasdt;
        activeCameraId = camerasdt[0].id;
        scanner.camera = camerasdt[0];
        scanner.start();
      } else {
        console.error('No cameras found.');
      };
      RellenarCamaras();
    }).catch(function (e) {
      console.error(e);
      PonerNoCamaras();
    });
  }
  catch (err)
  {
    PonerNoCamaras();
  }

});

    </script>
  </body>
</html>