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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, shrink-to-fit=no">
<title>Cropper.js</title>
<link rel="stylesheet" href="../css/cropper.css">
<style>
.container {
margin: 20px auto;
max-width: 640px;
}
img {
max-width: 100%;
}
.cropper-view-box,
.cropper-face {
border-radius: 50%;
}
</style>
</head>
<body>
<div class="container">
<h1>Crop a round image</h1>
<h3>Image</h3>
<div>
<img id="image" src="../images/picture.jpg" alt="Picture">
</div>
<h3>Result</h3>
<p>
<button type="button" id="button">Crop</button>
</p>
<div id="result"></div>
</div>
<script src="../js/cropper.js"></script>
<script>
function getRoundedCanvas(sourceCanvas) {
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
var width = sourceCanvas.width;
var height = sourceCanvas.height;
canvas.width = width;
canvas.height = height;
context.imageSmoothingEnabled = true;
context.drawImage(sourceCanvas, 0, 0, width, height);
context.globalCompositeOperation = 'destination-in';
context.beginPath();
context.arc(width / 2, height / 2, Math.min(width, height) / 2, 0, 2 * Math.PI, true);
context.fill();
return canvas;
}
window.addEventListener('DOMContentLoaded', function () {
var image = document.getElementById('image');
var button = document.getElementById('button');
var result = document.getElementById('result');
var croppable = false;
var cropper = new Cropper(image, {
aspectRatio: 1,
viewMode: 1,
ready: function () {
croppable = true;
},
});
button.onclick = function () {
var croppedCanvas;
var roundedCanvas;
var roundedImage;
if (!croppable) {
return;
}
// Crop
croppedCanvas = cropper.getCroppedCanvas();
// Round
roundedCanvas = getRoundedCanvas(croppedCanvas);
// Show
roundedImage = document.createElement('img');
roundedImage.src = roundedCanvas.toDataURL()
result.innerHTML = '';
result.appendChild(roundedImage);
};
});
</script>
</body>
</html>
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