File: public/js/tinymce/src/plugins/imagetools/src/main/js/core/ImageSize.js

/**
 * ImageSize.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.imagetools.core.ImageSize',
  [
  ],
  function () {
    function getImageSize(img) {
      var width, height;

      function isPxValue(value) {
        return /^[0-9\.]+px$/.test(value);
      }

      width = img.style.width;
      height = img.style.height;
      if (width || height) {
        if (isPxValue(width) && isPxValue(height)) {
          return {
            w: parseInt(width, 10),
            h: parseInt(height, 10)
          };
        }

        return null;
      }

      width = img.width;
      height = img.height;

      if (width && height) {
        return {
          w: parseInt(width, 10),
          h: parseInt(height, 10)
        };
      }

      return null;
    }

    function setImageSize(img, size) {
      var width, height;

      if (size) {
        width = img.style.width;
        height = img.style.height;

        if (width || height) {
          img.style.width = size.w + 'px';
          img.style.height = size.h + 'px';
          img.removeAttribute('data-mce-style');
        }

        width = img.width;
        height = img.height;

        if (width || height) {
          img.setAttribute('width', size.w);
          img.setAttribute('height', size.h);
        }
      }
    }

    function getNaturalImageSize(img) {
      return {
        w: img.naturalWidth,
        h: img.naturalHeight
      };
    }

    return {
      getImageSize: getImageSize,
      setImageSize: setImageSize,
      getNaturalImageSize: getNaturalImageSize
    };
  }
);