org.fcrepo.localservices.imagemanip

Class ImageManipulation

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.fcrepo.localservices.imagemanip.ImageManipulation

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class ImageManipulation
extends javax.servlet.http.HttpServlet

ImageManipulation is a Java servlet that takes a URL of an image as a param and based on other given parameters, can perform a variety of image related manipulations on the object.

After the image is manipulated, it is then sent back as an image/type object to the calling parent, most often a browser or an HTML img tag.

Author:

Theodore Serbinski

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ImageManipulation()

Method Summary

Modifier and Type	Method and Description
ij.process.ImageProcessor	crop(ij.process.ImageProcessor ip, String cropX, String cropY, String cropWidth, String cropHeight) Crops an image with supplied starting point and ending point.
void	destroy()
void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) Method automatically called by browser to handle image manipulations.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImageManipulation

public ImageManipulation()

Method Detail

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet

doGet

public void doGet(javax.servlet.http.HttpServletRequest req,
                  javax.servlet.http.HttpServletResponse res)
           throws javax.servlet.ServletException,
                  IOException

Method automatically called by browser to handle image manipulations.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Parameters:

req - Browser request to servlet res Response sent back to browser after image manipulation

Throws:

IOException - If an input or output exception occurred ServletException If a servlet exception occurred

javax.servlet.ServletException

crop

public ij.process.ImageProcessor crop(ij.process.ImageProcessor ip,
                                      String cropX,
                                      String cropY,
                                      String cropWidth,
                                      String cropHeight)

Crops an image with supplied starting point and ending point.

Parameters:

ip - The image to crop cropX The starting x position; x=0 corresponds to left side of image cropY The starting y position; y=0 corresponds to top of image cropWidth The width of the crop, starting from the above x cropHeight The height of the crop, starting from the above y

Returns:

The image cropped