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Bug report: Cannot load exr image in URI format (data:image/x-exr;base64, ) #20

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hchoi405 opened this issue Oct 20, 2021 · 0 comments
Open

Bug report: Cannot load exr image in URI format (data:image/x-exr;base64, ) #20

hchoi405 opened this issue Oct 20, 2021 · 0 comments
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enhancement New feature or request

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@hchoi405
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First of all, thank you for maintaining this repository.

While I'm making a third-party app using Jeri, I found that it cannot load the HDR image in URI format, that is in data:image/x-exr;base64,~, whereas other types of LDR images (tested jpg, png) are loaded successfully.

Here is a sample code that reproduces the problem. Run the HTML then press the Choose File button to select any images like the image images/test_image.exr or images/test_image.jpg given in this repository

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Example: Basic</title>
  <style>
    .stretch {
      width: 100%;
      height: 100%;
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
    }
  </style>
</head>

<body>
  <div style="width:100%; height: 80vh; position: relative;">
    <canvas id="image-layer" class="stretch"></canvas>
    <div id="mouse-layer" class="stretch"></div>
  </div>

  <input type="file" onchange="encodeImageFileAsURL(this)" />

  <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.6/umd/react.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.6/umd/react-dom.development.js"></script>
  <script src="./jeri.js"></script>
  </script>
  <script>
    const ImageLayer = Jeri.ImageLayer;
    const MouseLayer = Jeri.MouseLayer;

    const cache = new Jeri.ImageCache();

    function encodeImageFileAsURL(element) {
      var file = element.files[0];
      var reader = new FileReader();
      reader.onloadend = function () {
        cache.get(reader.result)
          .then((image) => {
            const imageLayer = new ImageLayer(document.getElementById('image-layer'), image);
            const mouseLayer = new MouseLayer(document.getElementById('mouse-layer'), image);
            mouseLayer.setEnableMouseEvents(true);
            mouseLayer.onTransformationChange(function (transformation) {
              imageLayer.setTransformation(transformation);
            });
          })
          .catch((error) => console.error(error));
      }
      reader.readAsDataURL(file);
    }
  </script>
</body>

</html>
@cbreak-black cbreak-black added the enhancement New feature or request label Oct 22, 2021
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@cbreak-black @hchoi405