xmlgraphics-commons 2.2

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

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

public class PreloaderRawPNG
extends AbstractImagePreloader


Field Summary
 
Fields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader
DEFAULT_PRIORITY
 
Constructor Summary
PreloaderRawPNG()
           
 
Method Summary
 int getPriority()
          Returns the priority of the preloader.
 ImageInfo preloadImage(String uri, Source src, ImageContext context)
          "Preloads" an image, i.e.
 
Methods inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
getHeader
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PreloaderRawPNG

public PreloaderRawPNG()
Method Detail

preloadImage

public ImageInfo preloadImage(String uri,
                              Source src,
                              ImageContext context)
                       throws ImageException,
                              IOException
Description copied from interface: ImagePreloader
"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:
ImageException - if an error occurs while preloading the image
IOException - if an I/O error occurs while preloading the image

getPriority

public int getPriority()
Description copied from class: AbstractImagePreloader
Returns the priority of the preloader. The lower the value, the higher the preloader's priority.

Specified by:
getPriority in interface ImagePreloader
Overrides:
getPriority in class AbstractImagePreloader
Returns:
an integer (default is 1000)

xmlgraphics-commons 2.2

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