Package org.apache.xmlgraphics.image.loader.impl

Class DefaultImageSessionContext

java.lang.Object

org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext

org.apache.xmlgraphics.image.loader.impl.DefaultImageSessionContext

All Implemented Interfaces:

ImageSessionContext

public class DefaultImageSessionContext
extends AbstractImageSessionContext

Very simple implementation of the ImageSessionContext interface. It works for absolute URLs and local filenames only. Consider writing your own implementation of the ImageSessionContext if you need more sophisticated functionality.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext

AbstractImageSessionContext.FallbackResolver, AbstractImageSessionContext.RestrictedFallbackResolver, AbstractImageSessionContext.UnrestrictedFallbackResolver

Constructor Summary

Constructors

Constructor	Description
DefaultImageSessionContext(ImageContext context, java.io.File baseDir)	Main constructor.

Method Summary

Modifier and Type	Method	Description
java.io.File	getBaseDir()	Returns the base directory for resolving relative filenames.
ImageContext	getParentContext()	Returns the session-independent context object which provides configuration information.
float	getTargetResolution()	Returns the resolution (in dpi) of the target device used when painting images.
protected javax.xml.transform.Source	resolveURI(java.lang.String uri)	Attempts to resolve the given URI.

Methods inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext

createImageInputStream, getSource, isReusable, needSource, newSource, returnSource, toFile

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultImageSessionContext

public DefaultImageSessionContext(ImageContext context,
                                  java.io.File baseDir)

Main constructor.

Parameters:

context - the parent image context

baseDir - the base directory for resolving relative filenames

Method Detail

getParentContext

public ImageContext getParentContext()

Returns the session-independent context object which provides configuration information.

Returns:

the associated ImageContext instance

getBaseDir

public java.io.File getBaseDir()

Returns the base directory for resolving relative filenames.

Returns:

the base directory

resolveURI

protected javax.xml.transform.Source resolveURI(java.lang.String uri)

Attempts to resolve the given URI.

Specified by:

resolveURI in class AbstractImageSessionContext

Parameters:

uri - URI to access

Returns:

A Source object, or null if the URI cannot be resolved.

getTargetResolution

public float getTargetResolution()

Returns the resolution (in dpi) of the target device used when painting images.

Returns:

the target resolution (in dpi)