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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: 960px;
+ }
+
+ img {
+ max-width: 100%;
+ }
+
+ .row,
+ .preview {
+ overflow: hidden;
+ }
+
+ .col {
+ float: left;
+ }
+
+ .col-6 {
+ width: 50%;
+ }
+
+ .col-3 {
+ width: 25%;
+ }
+
+ .col-2 {
+ width: 16.7%;
+ }
+
+ .col-1 {
+ width: 8.3%;
+ }
+ </style>
+</head>
+<body>
+ <div class="container">
+ <h1>Customize preview for Cropper</h1>
+ <div class="row">
+ <div class="col col-6">
+ <img id="image" src="../images/picture.jpg" alt="Picture">
+ </div>
+ <div class="col col-3">
+ <div class="preview"></div>
+ </div>
+ <div class="col col-2">
+ <div class="preview"></div>
+ </div>
+ <div class="col col-1">
+ <div class="preview"></div>
+ </div>
+ </div>
+ </div>
+
+ <script src="../js/cropper.js"></script>
+ <script>
+ function each(arr, callback) {
+ var length = arr.length;
+ var i;
+
+ for (i = 0; i < length; i++) {
+ callback.call(arr, arr[i], i, arr);
+ }
+
+ return arr;
+ }
+
+ window.addEventListener('DOMContentLoaded', function () {
+ var image = document.querySelector('#image');
+ var previews = document.querySelectorAll('.preview');
+ var cropper = new Cropper(image, {
+ ready: function () {
+ var clone = this.cloneNode();
+
+ clone.className = '';
+ clone.style.cssText = (
+ 'display: block;' +
+ 'width: 100%;' +
+ 'min-width: 0;' +
+ 'min-height: 0;' +
+ 'max-width: none;' +
+ 'max-height: none;'
+ );
+
+ each(previews, function (elem) {
+ elem.appendChild(clone.cloneNode());
+ });
+ },
+
+ crop: function (event) {
+ var data = event.detail;
+ var cropper = this.cropper;
+ var imageData = cropper.getImageData();
+ var previewAspectRatio = data.width / data.height;
+
+ each(previews, function (elem) {
+ var previewImage = elem.getElementsByTagName('img').item(0);
+ var previewWidth = elem.offsetWidth;
+ var previewHeight = previewWidth / previewAspectRatio;
+ var imageScaledRatio = data.width / previewWidth;
+
+ elem.style.height = previewHeight + 'px';
+ previewImage.style.width = imageData.naturalWidth / imageScaledRatio + 'px';
+ previewImage.style.height = imageData.naturalHeight / imageScaledRatio + 'px';
+ previewImage.style.marginLeft = -data.x / imageScaledRatio + 'px';
+ previewImage.style.marginTop = -data.y / imageScaledRatio + 'px';
+ });
+ },
+ });
+ });
+ </script>
+</body>
+</html>