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1   /*
2    * Copyright (c) 2002-2020, City of Paris
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions
7    * are met:
8    *
9    *  1. Redistributions of source code must retain the above copyright notice
10   *     and the following disclaimer.
11   *
12   *  2. Redistributions in binary form must reproduce the above copyright notice
13   *     and the following disclaimer in the documentation and/or other materials
14   *     provided with the distribution.
15   *
16   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17   *     contributors may be used to endorse or promote products derived from
18   *     this software without specific prior written permission.
19   *
20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30   * POSSIBILITY OF SUCH DAMAGE.
31   *
32   * License 1.0
33   */
34  package fr.paris.lutece.plugins.document.utils;
35  
36  import org.imgscalr.Scalr;
37  
38  import java.awt.image.BufferedImage;
39  
40  import java.io.ByteArrayInputStream;
41  import java.io.ByteArrayOutputStream;
42  import java.io.IOException;
43  
44  import javax.imageio.ImageIO;
45  
46  
47  /**
48   * Image utils class
49   */
50  public final class ImageUtils
51  {
52      /** Parameter JPG */
53      private static final String PARAMETER_JPG = "jpg";
54  
55      /**
56       * Private constructor
57       */
58      private ImageUtils(  )
59      {
60      }
61  
62      /**
63       * Resize an image
64       * @param byteArray the original byte arrau
65       * @param width the new width
66       * @return the resize byte array
67       * @throws IOException occurs during treatment
68       */
69      public static byte[] resizeImage( byte[] byteArray, int width )
70          throws IOException
71      {
72          // Crop image if needed
73          ByteArrayInputStream in = new ByteArrayInputStream( byteArray );
74          ByteArrayOutputStream out = new ByteArrayOutputStream(  );
75          BufferedImage image = ImageIO.read( in );
76          BufferedImage resizedImage;
77          resizedImage = Scalr.resize( image, Scalr.Mode.FIT_TO_WIDTH, width );
78          ImageIO.write( resizedImage, PARAMETER_JPG, out );
79  
80          return out.toByteArray(  );
81      }
82  }