harvey/sys/lib/ghostscript/gs_ciecs2.ps

%    Copyright (C) 2002 Aladdin Enterprises.  All rights reserved.
% 
% This software is provided AS-IS with no warranty, either express or
% implied.
% 
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
% 
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA  94903, U.S.A., +1(415)492-9861.

% $Id: gs_ciecs2.ps,v 1.1 2002/08/22 07:12:28 henrys Exp $
% Level 2 CIEBased color space method dictionaries.

%
% The validation routines in these method dictionaries perform only
% partial validations; the .setcie* operators will perform the rest.
%

% verify that at least one of the CIEBased color spaces is supported
true
  { /.setcieaspace /.setcieabcspace /.setciedefspace /.setciedefgspace }
  {
    where
      { pop not exit }
    if
  }
forall
  { currentfile closefile }
if


.currentglobal true .setglobal
.cspace_util begin

%
%   <obj>   check_cie_cspace   <obj>
%
% Perform a very basic check that an object is a CIEBased color space
% array.
%
/check_cie_cspace
  {
    //check_array exec
    dup 1 get type /dicttype ne
      //setcspace_typecheck
    if
  }
bind def



/.setcieaspace where
  {
    pop
    colorspacedict
    /CIEBasedA
      mark
        /cs_potential_indexed_base true
        /cs_potential_pattern_base true
        /cs_potential_alternate true
        /cs_potential_icc_alternate true
        /cs_get_ncomps //ncomps_1

        /cs_get_range
          {
            1 get /RangeA .knownget not
              { //dflt_range_1 }
            if
          }
        bind

        /cs_get_default_color { pop 0 } bind
        /cs_get_currentgray //no_currentgray
        /cs_get_currentrgb //no_currentrgb
        /cs_get_currentcmyk //no_currentcmyk
        /cs_validate //check_cie_cspace
        /cs_substitute //dup_1
        /cs_prepare {}

        /cs_install
          {
            NOCIE
              { pop /DeviceGray //.cs_install exec }
              { 1 get .setcieaspace }
            ifelse
          }
        bind

        /cs_prepare_color //validate_1
        /cs_complete_setcolor //pop_1
      .dicttomark
    put
  }
if

/.setcieabcspace where
  {
    pop
    colorspacedict
    /CIEBasedABC
      mark
        /cs_potential_indexed_base true
        /cs_potential_pattern_base true
        /cs_potential_alternate true
        /cs_potential_icc_alternate true
        /cs_get_ncomps //ncomps_3

        /cs_get_range
          {
            1 get /RangeABC .knownget not
              { //dflt_range_3 }
            if
          }
        bind

        /cs_get_default_color { pop 0 0 0 } bind
        /cs_get_currentgray //no_currentgray
        /cs_get_currentrgb //no_currentrgb
        /cs_get_currentcmyk //no_currentcmyk
        /cs_validate //check_cie_cspace
        /cs_substitute //dup_1
        /cs_prepare {}

        /cs_install
          {
            NOCIE
              { pop /DeviceRGB //.cs_install exec }
              { 1 get .setcieabcspace }
            ifelse
          }
        bind

        /cs_prepare_color //validate_3
        /cs_complete_setcolor //pop_1
      .dicttomark
    put
  }
if


end     % .cspace_util
.setglobal