Skip to content

Instantly share code, notes, and snippets.

@prajaybasu
Created August 29, 2018 18:49
Show Gist options
  • Save prajaybasu/3bbbcf4254fe73758942ca94aa1300e8 to your computer and use it in GitHub Desktop.
Save prajaybasu/3bbbcf4254fe73758942ca94aa1300e8 to your computer and use it in GitHub Desktop.
Test
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/exif-js/2.3.0/exif.min.js"></script>
<script>
window.onload = getExif("1535556934547.jpg");
function getExif(src) {
var img = new Image();
img.src = src;
img.onload = function () {
EXIF.getData(img, function () {
var orientation = EXIF.getTag(this, "Orientation");
var width = img.width;
var height = img.height;
var canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
var context = canvas.getContext("2d");
if ((orientation % 2 == 0))
{
}
switch (orientation) {
case 1: context.transform(1, 0, 0, 1, 0, 0); break;
case 2: canvas.width = img.height; canvas.height = img.width; context.transform(-1, 0, 0, 1, width, 0); break;
case 3: context.transform(-1, 0, 0, -1, width, height); break;
case 4: canvas.width = img.height; canvas.height = img.width; context.transform(1, 0, 0, -1, 0, height); break;
case 5: context.transform(0, 1, 1, 0, 0, 0); break;
case 6: canvas.width = img.height; canvas.height = img.width; context.transform(0, 1, -1, 0, height, 0); break;
case 7: context.transform(0, -1, -1, 0, height, width); break;
case 8: canvas.width = img.height; canvas.height = img.width; context.transform(0, -1, 1, 0, 0, width); break;
}
context.drawImage(img, 0, 0);
var imageTarget = document.createElement('img');
imageTarget.src = canvas.toDataURL('image/png');
imageTarget.style.width = canvas.width + 'px';
imageTarget.style.height = canvas.height + 'px';
document.body.appendChild(imageTarget);
});
}
}
</script>
</head>
</html>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment