fop 1.0

org.apache.fop.afp.ioca
Class ImageRasterData

java.lang.Object
  extended by org.apache.fop.afp.modca.AbstractAFPObject
      extended by org.apache.fop.afp.ioca.ImageRasterData
All Implemented Interfaces:
Streamable

public class ImageRasterData
extends AbstractAFPObject

Contains the image points that define the IM image raster pattern. A raster pattern is the array of presentation device pels that forms the image. The image data is uncompressed. Bits are grouped into bytes and are ordered from left to right within each byte. Each bit in the image data represents an image point and is mapped to presentation device pels as specified in the IOC structured field. A bit with value B'1' indicates a significant image point; a bit with value B'0' indicates an insignificant image point. Image points are recorded from left to right in rows that represents scan lines (X direction), and rows representing scan lines are recorded from top to bottom (Y direction). When the image is presented, all image points in a row are presented before any image points in the next sequential row are presented, and all rows have the same number of image points. If the total number of image points is not a multiple of 8, the last byte of the image data is padded to a byte boundary. The padding bits do not represent image points and are ignored by presentation devices.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.fop.afp.modca.AbstractAFPObject
AbstractAFPObject.Category, AbstractAFPObject.Type
 
Field Summary
 
Fields inherited from class org.apache.fop.afp.modca.AbstractAFPObject
log, SF_CLASS, SF_HEADER
 
Constructor Summary
ImageRasterData(byte[] data)
          Constructor for the image raster data object
 
Method Summary
 void writeToStream(java.io.OutputStream os)
          DataStream objects must implement the writeToStream() method to write its data to the given OutputStream
 
Methods inherited from class org.apache.fop.afp.modca.AbstractAFPObject
copyChunks, copySF, copySF, truncate, writeChunksToStream, writeObjects
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ImageRasterData

public ImageRasterData(byte[] data)
Constructor for the image raster data object

Parameters:
data - The raster image data
Method Detail

writeToStream

public void writeToStream(java.io.OutputStream os)
                   throws java.io.IOException
DataStream objects must implement the writeToStream() method to write its data to the given OutputStream

Parameters:
os - the outputsteam stream
Throws:
java.io.IOException - an I/O exception of some sort has occurred.

fop 1.0

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