jfig.utils
Class PPMReader

java.lang.Object
  jfig.utils.PPMReader

public class PPMReader

extends java.lang.Object

read image data in portable pixmap format (PPM).

PPMReader: read image data from input streams in raw portable pixmap (PPM) format. This class does not support PGM, PBM or verbose PPM format.

Field Summary

(package private) boolean	debug
(package private) int	height
(package private) int	maxvalue
(package private) int[]	pixels
(package private) int	width

Constructor Summary

PPMReader()

Method Summary

java.awt.Image	getPPMImage(java.awt.Component observer, java.io.InputStream stream) Read a ppm (raw) image from InputStream 'stream' and use AWT-Component 'observer' to create an AWT image.
static void	main(java.lang.String[] argv) main: load and display an PPM image.
static void	usage()

Methods inherited from class java.lang.Object

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

Field Detail

width

int width

height

int height

maxvalue

int maxvalue

pixels

int[] pixels

debug

boolean debug

Constructor Detail

PPMReader

public PPMReader()

Method Detail

getPPMImage

public java.awt.Image getPPMImage(java.awt.Component observer,
                                  java.io.InputStream stream)
                           throws java.lang.Exception

Read a ppm (raw) image from InputStream 'stream' and use AWT-Component 'observer' to create an AWT image. Note that observer _must_ be visible for this to work (AWT bug).

The ppm (raw) image format looks like this:

     P6
     # comment line(s)
     595 842
     255
     width*height bytes with the image data
     

Throws:

java.lang.Exception

usage

public static void usage()

main

public static void main(java.lang.String[] argv)

main: load and display an PPM image. Originally used for debugging, but may be used as a PPM viewer, too.