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Xpmtoppm User Manual(0) Xpmtoppm User Manual(0)
xpmtoppm - convert an X11 pixmap to a PPM image
This program is part of Netpbm(1)
xpbtoppm reads an X11 pixmap (XPM version 1 or 3) as input and produces a PPM image as
xpmtoppm creates a PBM file containing the transparency mask for the image. If the
input image doesn't contain transparency information, the alpha-filename file con-
tains all white (opaque) alpha values. If you don't specify --alphaout, xpmtoppm
does not generate an alpha file, and if the input image has transparency informa-
tion, xpmtoppm simply discards it.
If you specify - as the filename, xpmtoppm writes the alpha output to Standard Out-
put and discards the image.
for one way to use the alpha output file.
xpmtoppm can't handle a line longer than 8K characters in the XPM input. If an
input line exceeds this limit, xpmtoppm quits with an error message to that effect.
Before Netpbm 10.30 (October 2005), the limit was 2K.
xpmtoppm prints information about its processing on Standard Error.
xpmtoppm recognizes only a limited set of the features of XPM Version 3; i.e. it rejects
as invalid many valid XPM images.
The only place a comment block is valid is starting in Column 1 of the line immediately
after 'static char ...'.
In addition, ppmtoxpm properly recognizes any single-line comment that begins in Column 1
in the color table part of the file.
There must be for every pixel a default colorname for a color type visual.
Before Netpbm 10.58 (March 2012), zero bytes per pixel causes the program to fail with a
message about premature EOF on input.
ppmtoxpm(1) , pamcomp(1) , ppm(1)
Copyright (C) 1991 by Jef Poskanzer.
Upgraded to work with XPM version 3 by Arnaud Le Hors<firstname.lastname@example.org>, Tue Apr 9
netpbm documentation 31 December 2011 Xpmtoppm User Manual(0)
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