Collaboration diagram for org.turro.elephant.impl.util.Thumbs:

Public Member Functions
	Thumbs (HttpServletRequest request)

String	getThumb (String file, int maxDim, String rotate)

void	createThumb (String rotate, String file, String thumb, int maxDim)

Detailed Description

Author: Lluis Turró Cutiller lluis.nosp@m.@tur.nosp@m.ro.or.nosp@m.g

Definition at line 36 of file Thumbs.java.

Constructor & Destructor Documentation

◆ Thumbs()

org.turro.elephant.impl.util.Thumbs.Thumbs ( HttpServletRequest request )

Definition at line 40 of file Thumbs.java.

                                             {
     this.request = request;
     this.context = request.getSession().getServletContext();
   }

Member Function Documentation

◆ createThumb()

void org.turro.elephant.impl.util.Thumbs.createThumb	(	String	rotate,
		String	file,
		String	thumb,
		int	maxDim
	)

Definition at line 63 of file Thumbs.java.

                                                                                 {
     
     String filePath = context.getRealPath(file),
            thumbPath = context.getRealPath(thumb);
     
     try {
  
       File fi = new File(filePath);
  
       // maximum dimension
       if(maxDim <= 0) maxDim = 200;
  
       if(needsRecreateThumb(thumbPath, maxDim)) {
  
         BufferedImage inImage = ImageIO.read(fi);
         
         // Determine the scale.
         double scale = (double)maxDim/(double)inImage.getWidth(null);
 //        if (inImage.getHeight(null) > inImage.getWidth(null)) {
 //          scale = (double)maxDim/(double)inImage.getHeight(null);
 //        }
  
         if(inImage.getWidth() <= maxDim/* && inImage.getHeight() <= maxDim*/) {
           scale = 1;
         }
         
         // Determine size of new image. 
         //One of them should equal maxDim.
         int scaledW = (int)(scale*inImage.getWidth(null));
         int scaledH = (int)(scale*inImage.getHeight(null));
  
         // Create an image buffer in 
         //which to paint on.
         BufferedImage outImage;
         if(":L".equals(rotate) || ":R".equals(rotate)) 
           outImage = new BufferedImage(
               scaledH, scaledW, BufferedImage.TYPE_INT_RGB);
         else
           outImage = new BufferedImage(
               scaledW, scaledH, BufferedImage.TYPE_INT_RGB);
  
         // Set the scale.
         AffineTransform tx = new AffineTransform();
  
         // If the image is smaller than 
         //the desired image size,
         // don't bother scaling.
         if (scale < 1.0d) {
           tx.scale(scale, scale);
         }
  
         if(":L".equals(rotate)) {
           // 90 to left
           tx.translate(inImage.getHeight(), 0);
           tx.rotate(Math.PI/2);
         }
         else if(":R".equals(rotate)) {
           // 90 to right
           tx.translate(0, inImage.getWidth());
           tx.rotate(-(Math.PI/2));
         }
  
         // Paint image.
         Graphics2D g2d = outImage.createGraphics();
         g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
         g2d.drawImage(inImage, tx, null);
         g2d.dispose();
  
         File fo = new File(thumbPath);
         ImageIO.write(outImage, "jpg", fo); 
     
         
       }
  
     } catch(Exception ex) {
       Logger.getLogger(Thumbs.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
     }
   }

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◆ getThumb()

String org.turro.elephant.impl.util.Thumbs.getThumb	(	String	file,
		int	maxDim,
		String	rotate
	)

Definition at line 46 of file Thumbs.java.

                                                                  {
     String contextPath = request.getContextPath(),
            fileNoContext = file;
     
     if(contextPath.length() > 1 && file.startsWith(contextPath)) {
       fileNoContext = file.substring(contextPath.length());
     }
     String filePath = fileNoContext,
            thumbPath = insertThumb(fileNoContext);
     
     if(filePath.indexOf("_thumb") > -1) return file;
  
     createThumb(rotate, filePath, thumbPath, maxDim);
  
     return insertThumb(file);
   }