Ticket/InsdepUI/plugin/cropper-2.3.4/examples/a-range-of-aspect-ratio.html

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Cropper</title>
  <link rel="stylesheet" href="../assets/css/bootstrap.min.css">
  <link rel="stylesheet" href="../dist/cropper.css">
  <style>
    .container {
      max-width: 960px;
    }

    img {
      max-width: 100%;
    }
  </style>
</head>
<body>

  <div class="container">
    <h1 class="page-header">Cropper with a range of aspect ratio</h1>
    <div>
      <img id="image" src="../assets/img/picture.jpg" alt="Picture">
    </div>
  </div>

  <!-- Scripts -->
  <script src="../assets/js/jquery.min.js"></script>
  <script src="../assets/js/bootstrap.min.js"></script>
  <script src="../dist/cropper.js"></script>
  <script>
    $(function () {
      var $image = $('#image');
      var minAspectRatio = 0.5;
      var maxAspectRatio = 1.5;

      $image.cropper({
        built: function () {
          var containerData = $image.cropper('getContainerData');
          var cropBoxData = $image.cropper('getCropBoxData');
          var aspectRatio = cropBoxData.width / cropBoxData.height;
          var newCropBoxWidth;

          if (aspectRatio < minAspectRatio || aspectRatio > maxAspectRatio) {
            newCropBoxWidth = cropBoxData.height * ((minAspectRatio + maxAspectRatio) / 2);

            $image.cropper('setCropBoxData', {
              left: (containerData.width - newCropBoxWidth) / 2,
              width: newCropBoxWidth
            });
          }
        },
        cropmove: function () {
          var cropBoxData = $image.cropper('getCropBoxData');
          var aspectRatio = cropBoxData.width / cropBoxData.height;

          if (aspectRatio < minAspectRatio) {
            $image.cropper('setCropBoxData', {
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