[jboss-cvs] jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/util ...

[Christian Bauer]

  User: cbauer  
  Date: 07/06/12 13:51:00

  Modified:    examples/wiki/src/main/org/jboss/seam/wiki/util 
                        WikiUtil.java
  Log:
  Pre-generate thumbnails
  
  Revision  Changes    Path
  1.8       +35 -0     jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/util/WikiUtil.java
  
  (In the diff below, changes in quantity of whitespace are not shown.)
  
  Index: WikiUtil.java
  ===================================================================
  RCS file: /cvsroot/jboss/jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/util/WikiUtil.java,v
  retrieving revision 1.7
  retrieving revision 1.8
  diff -u -b -r1.7 -r1.8
  --- WikiUtil.java	12 Jun 2007 12:30:01 -0000	1.7
  +++ WikiUtil.java	12 Jun 2007 17:51:00 -0000	1.8
  @@ -8,9 +8,15 @@
   import javax.faces.component.UIData;
   import javax.faces.context.FacesContext;
   import javax.servlet.http.HttpSession;
  +import javax.swing.*;
  +import javax.imageio.ImageIO;
   import java.util.Collection;
   import java.util.List;
   import java.math.BigDecimal;
  +import java.awt.image.BufferedImage;
  +import java.awt.*;
  +import java.io.ByteArrayOutputStream;
  +import java.io.IOException;
   
   /**
    * Adds stuff to and for JSF that should be there but isn't. Also stuff that is exposed
  @@ -142,6 +148,35 @@
           return sb.toString();
       }
   
  +    public static byte[] resizeImage(byte[] imageData, String contentType, int width) {
  +        ImageIcon icon = new ImageIcon(imageData);
  +
  +        double ratio = (double) width / icon.getIconWidth();
  +        int resizedHeight = (int) (icon.getIconHeight() * ratio);
  +
  +        int imageType = "image/png".equals(contentType)
  +                        ? BufferedImage.TYPE_INT_ARGB
  +                        : BufferedImage.TYPE_INT_RGB;
  +        BufferedImage bImg = new BufferedImage(width, resizedHeight, imageType);
  +        Graphics2D g2d = bImg.createGraphics();
  +        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
  +        g2d.drawImage(icon.getImage(), 0, 0, width, resizedHeight, null);
  +        g2d.dispose();
  +
  +        String formatName = "";
  +        if ("image/png".equals(contentType))       formatName = "png";
  +        else if ("image/jpeg".equals(contentType)) formatName = "jpeg";
  +
  +        ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
  +        try {
  +            ImageIO.write(bImg, formatName, baos);
  +            return baos.toByteArray();
  +        } catch (IOException ex) {
  +            throw new RuntimeException(ex);
  +        }
  +
  +    }
  +
       public static Throwable unwrap(Throwable throwable) throws IllegalArgumentException {
           if (throwable == null) {
               throw new IllegalArgumentException("Cannot unwrap null throwable");