org.jfree.report.demo.helper
Class ImageRenderFunction

java.lang.Object
  org.jfree.report.function.AbstractFunction
      org.jfree.report.demo.helper.ImageRenderFunction

All Implemented Interfaces:

java.lang.Cloneable, java.util.EventListener, Expression, Function, PageEventListener, ReportListener, java.io.Serializable

public class ImageRenderFunction

extends AbstractFunction

implements java.io.Serializable, PageEventListener

The ImageRenderFunction creates a simple Image using a BufferedImage within a function to show the use of the ImageFunctionElement. The image is created whenever a new page is started.

Author:

Thomas Morgner

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.jfree.report.function.Expression

AUTOACTIVATE_PROPERTY

Constructor Summary

ImageRenderFunction()

Method Summary

java.lang.Object	getValue() Return the last generated Image.
void	pageCanceled(ReportEvent event) Receives notification that a page was canceled by the ReportProcessor.
void	pageFinished(ReportEvent event) Receives notification that a page is completed.
void	pageStarted(ReportEvent event) Create a image according to the current state, simple and silly ...

Methods inherited from class org.jfree.report.function.AbstractFunction

clone, getDataRow, getDependencyLevel, getInstance, getName, getProperties, getProperty, getProperty, groupFinished, groupStarted, initialize, isActive, itemsAdvanced, itemsFinished, itemsStarted, reportDone, reportFinished, reportInitialized, reportStarted, setDataRow, setDependencyLevel, setName, setProperties, setProperty

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageRenderFunction

public ImageRenderFunction()

Method Detail

pageStarted

public void pageStarted(ReportEvent event)

Create a image according to the current state, simple and silly ...

Specified by:

pageStarted in interface PageEventListener

Parameters:

event - the report event.

pageFinished

public void pageFinished(ReportEvent event)

Receives notification that a page is completed.

Specified by:

pageFinished in interface PageEventListener

Parameters:

event - The event.

getValue

public java.lang.Object getValue()

Return the last generated Image.

Specified by:

getValue in interface Expression

Returns:

the function value.

pageCanceled

public void pageCanceled(ReportEvent event)

Receives notification that a page was canceled by the ReportProcessor. This method is called, when a page was removed from the report after it was generated.

Specified by:

pageCanceled in interface PageEventListener

Parameters:

event - The event.