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

java.lang.Object
  org.apache.xmlgraphics.image.loader.impl.AbstractImageLoader

All Implemented Interfaces:

ImageLoader

Direct Known Subclasses:

CompositeImageLoader, ImageLoaderEPS, ImageLoaderImageIO, ImageLoaderRaw, ImageLoaderRawCCITTFax, ImageLoaderRawJPEG

public abstract class AbstractImageLoader
extends java.lang.Object
implements ImageLoader

Simple abstract base class for ImageLoaders.

Constructor Summary

AbstractImageLoader()

Method Summary

int	getUsagePenalty() Returns the penalty assigned to using this image loader.
Image	loadImage(ImageInfo info, ImageSessionContext session) Loads and returns an image.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.xmlgraphics.image.loader.spi.ImageLoader

getTargetFlavor, loadImage

Constructor Detail

AbstractImageLoader

public AbstractImageLoader()

Method Detail

loadImage

public Image loadImage(ImageInfo info,
                       ImageSessionContext session)
                throws ImageException,
                       java.io.IOException

Loads and returns an image.

Specified by:

loadImage in interface ImageLoader

Parameters:

info - the image info object indicating the image

session - the session context

Returns:

the fully loaded image

Throws:

ImageException - if an error occurs while loading the image

java.io.IOException - if an I/O error occurs while loading the image

getUsagePenalty

public int getUsagePenalty()

Returns the penalty assigned to using this image loader. The value is used to select the best processing chain for images.

Specified by:

getUsagePenalty in interface ImageLoader

Returns:

the usage penalty (must be a non-negative integer)