/**
    * This file Copyright (c) 2011-2018 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.dam.app.ui.field.upload;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.InputStream;
  
  import org.apache.commons.io.IOUtils;
  import org.devlib.schmidt.imageinfo.ImageInfo;
  
  /**
   * Represents the size of an image. This class is immutable.
   */
  final class ImageSize {
  
      private final long width;
      private final long height;
  
      ImageSize(long width, long height) {
          this.width = width;
          this.height = height;
      }
  
      public long getWidth() {
          return width;
      }
  
      public long getHeight() {
          return height;
      }
  
      /**
       * Scales the size to fit inside a bounding rectangle keeping the aspect ratio as is. If this image is smaller than
       * the bounding rectangle no change occurs.
       */
      public ImageSize scaleToFitIfLarger(long boundingWidth, long boundingHeight) {
  
          if (this.width >= this.height && this.width > boundingWidth) {
              double scaleFactor = ((double) boundingWidth) / this.width;
              long scaledHeight = (long) (scaleFactor * this.height);
              return new ImageSize(boundingWidth, scaledHeight);
          }
  
          if (this.height > this.width && this.height > boundingHeight) {
              double scaleFactor = ((double) boundingHeight) / this.height;
              long scaledWidth = (long) (scaleFactor * this.width);
              return new ImageSize(scaledWidth, boundingHeight);
          }
  
          return this;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (!(o instanceof ImageSize)) {
              return false;
          }
  
          final ImageSize../../../../../info/magnolia/dam/app/ui/field/upload/ImageSize.html#ImageSize">ImageSize imageSize = (ImageSize) o;
  
          return height == imageSize.height && width == imageSize.width;
      }
  
     @Override
     public int hashCode() {
         int result = (int) (width ^ (width >>> 32));
         result = 31 * result + (int) (height ^ (height >>> 32));
         return result;
     }
 
     public static ImageSize valueOf(File file) throws FileNotFoundException {
         return valueOf(new FileInputStream(file));
     }
 
     public static ImageSize valueOf(InputStream inputStream) {
         InputStream stream = null;
         try {
             ImageInfo imageInfo = new ImageInfo();
             stream = inputStream;
             imageInfo.setInput(stream);
             return imageInfo.check() ? new ImageSize(imageInfo.getWidth(), imageInfo.getHeight()) : null;
         } finally {
             IOUtils.closeQuietly(stream);
         }
     }
 }