org.foray.graphic.factory
Class BMPFactory

java.lang.Object
  org.foray.graphic.factory.GraphicFactory
      org.foray.graphic.factory.BMPFactory

public class BMPFactory
extends GraphicFactory

ImageReader object for BMP image type.

Author:

Pankaj Narula

Field Summary

protected static byte[]

BMP_HEADER The header bytes at the beginning of a BMP file.

Constructor Summary

BMPFactory(GraphicServer4a server)
Constructor.

Method Summary

BMPGraphic

attemptCreate(URL url, BufferedInputStream bis) Subclasses implement this method to try to create an appropriate Graphic instance.

Methods inherited from class org.foray.graphic.factory.GraphicFactory

getLogger, getServer, makeGraphic, maxBytesToVerify

Methods inherited from class java.lang.Object

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

Field Detail

BMP_HEADER

protected static final byte[] BMP_HEADER

The header bytes at the beginning of a BMP file.

Constructor Detail

BMPFactory

public BMPFactory(GraphicServer4a server)

Constructor.

Parameters:

server - The parent graphic server.

Method Detail

attemptCreate

public BMPGraphic attemptCreate(URL url,
                                BufferedInputStream bis)
                         throws IOException

Description copied from class: GraphicFactory

Subclasses implement this method to try to create an appropriate Graphic instance. Note that this superclass handles the task of marking and resetting the input stream, so all the subclass needs to do is read the stream.

Specified by:

attemptCreate in class GraphicFactory

Parameters:

url - The URL which contains the graphic content.

bis - The reusable input stream containing the bytes from url.

Returns:

The newly-created Graphic instance, or null if this factory was unable to create such an instance.

Throws:

IOException - For IO errors.