xmlgraphics-commons 1.4

org.apache.xmlgraphics.image.loader.impl
Class PreloaderBMP

java.lang.Object
  extended by org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
      extended by org.apache.xmlgraphics.image.loader.impl.PreloaderBMP
All Implemented Interfaces:
ImagePreloader

public class PreloaderBMP
extends AbstractImagePreloader

Image preloader for BMP images.


Field Summary
protected static int BMP_SIG_LENGTH
          Length of the BMP header
 
Fields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader
DEFAULT_PRIORITY
 
Constructor Summary
PreloaderBMP()
           
 
Method Summary
 ImageInfo preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context)
          "Preloads" an image, i.e.
 
Methods inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
getHeader, getPriority
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

BMP_SIG_LENGTH

protected static final int BMP_SIG_LENGTH
Length of the BMP header

See Also:
Constant Field Values
Constructor Detail

PreloaderBMP

public PreloaderBMP()
Method Detail

preloadImage

public ImageInfo preloadImage(java.lang.String uri,
                              javax.xml.transform.Source src,
                              ImageContext context)
                       throws java.io.IOException,
                              ImageException
"Preloads" an image, i.e. indentifies whether the source image is supported by this implementation and determines the image's intrinsic size and possibly some additional information. The image is usually not fully loaded at this time to conserve memory. The method returns null if the image was not identified. An ImageException is only thrown if the image is identified but some error has happened while working on the file.

Parameters:
uri - the original (unresolved) URI of the image
src - a image source the image is loaded from
context - the context object that provides configuration information
Returns:
an image info object with the basic information about an image or null if the image is not supported by this implementation
Throws:
java.io.IOException - if an I/O error occurs while preloading the image
ImageException - if an error occurs while preloading the image

xmlgraphics-commons 1.4

Copyright 1999-2010 The Apache Software Foundation. All Rights Reserved.