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% Copyright (C) 2001 Aladdin Enterprises. All rights reserved.
%
% This program is free software; you can redistribute it and/or modify it
% under the terms of the GNU General Public License as published by the
% Free Software Foundation; either version 2 of the License, or (at your
% option) any later version.
%
% This program is distributed in the hope that it will be useful, but
% WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
% Public License for more details.
%
% You should have received a copy of the GNU General Public License along
% with this program; if not, write to the Free Software Foundation, Inc.,
% 59 Temple Place, Suite 330, Boston, MA, 02111-1307.
% $Id: gs_icc.ps,v 1.2.2.1.2.1 2003/04/12 14:02:38 giles Exp $
% PostScript portion of ICCBased color space support
//userdict /.icc_comp_map_dict
<< 1 /DeviceGray 3 /DeviceRGB 4 /DeviceCMYK >>
put
colorspacedict /ICCBased
{
% Verify that the source object is an array, that it is at least of length
% two, and that the second entry is a readable dictionary. If we got this
% far, we know the top-level object exists and is readable, but it might
% be a dictionary.
dup type dup /arraytype ne exch /packedarraytype ne and
{ /setcolorspace /typecheck signalerror }
if
dup length 2 lt
{ /setcolorspace /rangecheck signalerror }
if
dup 1 get type /dicttype ne
{ /setcolorspace /typecheck signalerror }
if
dup 1 get rcheck not
{ /setcolorspace /invalidaccess signalerror }
if
% Verify that the dictionary defines the key N (number of components) and
% entry is provided and has a legitimate value
dup 1 get /N .knownget
{
//.icc_comp_map_dict exch known not
{
% generate the appropriate error
/setcolorspace
1 index 1 get /N type type /integertype ne
{ /typecheck }
{ /rangecheck }
ifelse
signalerror
}
if
}
{ /setcolorspace /undefined signalerror }
ifelse
% Verify DataSrouce and, if it is a string, convert it to a file
dup 1 get /DataSource .knownget
{
dup rcheck not
{ pop /setcolorspace /invalidaccess signalerror }
if
type dup /stringtype eq
{
pop
2 array copy
dup 1
2 copy get dup length dict copy
dup /DataSource
2 copy get /ReusableStreamDecode filter
put
put
}
{
/filetype ne
{ /setcolorspace /typecheck signalerror }
if
}
ifelse
}
{ /setcolorspace /undefined signalerror }
ifelse
% set the alternate color space to be the current color space
dup 1 get /Alternate .knownget not
{ dup 1 get /N get //.icc_comp_map_dict exch get }
if
setcolorspace
% if CIE spaces are not use, just take the alternate space
NOCIE
{ pop //null }
{ % check for native support
/.seticcspace where
{ pop dup 1 get
% Acrobat Reader silently ignores errors with ICC profiles
% and uses the alternate color space -- do the same.
mark exch { .seticcspace } stopped
{ cleartomark pop //null }
{ pop }
ifelse
}
{ pop //null }
ifelse
}
ifelse
}
bind put
//userdict /.icc_comp_map_dict undef
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