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Text File | 2000-11-21 | 2.3 KB | 67 lines | [TEXT/R*ch] |
- % Copyright (C) 1996, 1997, 1998 Aladdin Enterprises. All rights reserved.
- %
- % This file is part of Ghostscript.
- %
- % Ghostscript is distributed in the hope that it will be useful, but
- % WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- % to anyone for the consequences of using it or for whether it serves any
- % particular purpose or works at all, unless he says so in writing. Refer
- % to the Ghostscript General Public License for full details.
- %
- % Everyone is granted permission to copy, modify and redistribute
- % Ghostscript, but only under the conditions described in the Ghostscript
- % General Public License. A copy of this license is supposed to have been
- % given to you along with Ghostscript so you can know your rights and
- % responsibilities. It should be in a file named COPYING. Among other
- % things, the copyright notice and this notice must be preserved on all
- % copies.
-
- % $Id: viewcmyk.ps,v 1.1 2000/03/09 08:40:40 lpd Exp $
- % viewcmyk.ps
- % Display a raw CMYK file.
- % Requires the colorimage operator.
- % If SCALE is defined, maps input pixels to output pixels with that scale;
- % if SCALE is undefined, scales the image to fit the page.
- % If BITS is defined, it is the number of bits per sample (1,2,4,8,12);
- % if BITS is undefined, its default value is 1.
-
- /viewcmyk { % <filename> <width> viewcmyk -
- 20 dict begin
- /w exch def
- /fname exch def
- /bpc /BITS where { pop BITS } { 1 } ifelse def
- /f fname (r) file def
- mark fname status pop pop pop /flen exch def cleartomark
- /h flen w bpc 4 mul mul 7 add 8 idiv idiv def
- (Dimensions: ) print [w h] == flush
- % Set up scaling.
- /SCALE where {
- pop
- % Map pixels SCALE-for-1. Assume orthogonal transformation.
- SCALE 1 0 dtransform add abs div
- SCALE 0 1 dtransform add abs div
- } {
- % Scale the image (uniformly) to fit the page.
- clippath pathbbox pop pop translate
- pathbbox 3 -1 roll sub h div
- 3 1 roll exch sub w div min dup
- } ifelse scale
- w h bpc [1 0 0 -1 0 h] f false 4 colorimage
- showpage
- f closefile
- end
- } bind def
-
- % If the program was invoked from the command line, run it now.
- [ shellarguments {
- counttomark 2 eq {
- cvi viewcmyk
- } {
- cleartomark
- (Usage: gs -- viewcmyk.ps filename.cmyk width\n) print
- ( e.g.: gs -- viewcmyk.ps my.cmyk 2550\n) print flush
- } ifelse
- } {
- pop
- } ifelse
-