% Copyright (C) 1999 Aladdin Enterprises. All rights reserved.% % This file is part of Aladdin Ghostscript.% % Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author% or distributor accepts any responsibility for the consequences of using it,% or for whether it serves any particular purpose or works at all, unless he% or she says so in writing. Refer to the Aladdin Ghostscript Free Public% License (the "License") for full details.% % Every copy of Aladdin Ghostscript must include a copy of the License,% normally in a plain ASCII text file named PUBLIC. The License grants you% the right to copy, modify and redistribute Aladdin Ghostscript, but only% under certain conditions described in the License. Among other things, the% License requires that the copyright notice and this notice be preserved on% all copies.% $Id: gs_trap.ps,v 1.1 2000/03/09 08:40:40 lpd Exp $% PostScript LanguageLevel 3 in-RIP trapping support.ll3dict begin% We need LanguageLevel 2 or higher in order to have setuserparams and% defineresource.languagelevel dup 2 max .setlanguagelevel% ------ Trapping ------ %% The PostScript-level trapping parameters are maintained in userdict,% and explicitly reinstalled upon restore./Trapping mark/settrapparams dup { % <paramdict> settrapparams - /.trapparams .uservar dup length dict .copydict dup 2 index { % Stack: paramdict olddict olddict key value 2 index 2 index known { put dup } { pop pop } ifelse } forall pop dup .settrapparams % Let the operator check parameter validity. .userdict /.trapparams 3 -1 roll put pop} bind .makeoperator/.copyparams { % <obj> .copyparams <obj'> dup type /dicttype eq { dup length dict .copydict dup { .copyparams 3 copy put pop pop } forall } { dup type /arraytype eq { [ exch { .copyparams } forall ] } if } ifelse} odef/currenttrapparams dup { % - currenttrapparams <paramdict> /.trapparams .uservar .copyparams} bind .makeoperator/settrapzone dup { % - settrapzone - % ****** DUMMY ****** newpath} bind .makeoperator% Define initial (dummy) trapping parameters.% These values are mostly complete guesses.userdict /.trapparams mark /BlackColorLimit 1.0 /BlackDensityLimit 1.0 /BlackWidth 1.0 /ColorantZoneDetails 0 dict /Enabled true /HalftoneName null /ImageInternalTrapping false /ImageResolution 1 /ImageToObjectTrapping true /ImageTrapPlacement /Center /SlidingTrapLimit 1.0 /StepLimit 1.0 /TrapColorScaling 0.0 /TrapSetName null /TrapWidth 1.0.dicttomark readonly put.dicttomark /ProcSet defineresource pop% Define the InkParams and TrapParams resource categories.{ /InkParams /TrapParams } { /Generic /Category findresource dup maxlength 3 add dict .copydict begin /InstanceType /dicttype def currentdict end /Category defineresource pop} forall% Define the TrappingType resource category./Generic /Category findresource dup maxlength 3 add dict .copydict begin /InstanceType /integertype def/TrappingType currentdict end /Category defineresource pop{1001} { dup /TrappingType defineresource pop } forall.setlanguagelevelend % ll3dict
% Copyright (C) 1999 Aladdin Enterprises. All rights reserved.
%
% This file is part of Aladdin Ghostscript.
%
% Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
% or distributor accepts any responsibility for the consequences of using it,
% or for whether it serves any particular purpose or works at all, unless he
% or she says so in writing. Refer to the Aladdin Ghostscript Free Public
% License (the "License") for full details.
%
% Every copy of Aladdin Ghostscript must include a copy of the License,
% normally in a plain ASCII text file named PUBLIC. The License grants you
% the right to copy, modify and redistribute Aladdin Ghostscript, but only
% under certain conditions described in the License. Among other things, the
% License requires that the copyright notice and this notice be preserved on
% all copies.
% $Id: gs_trap.ps,v 1.1 2000/03/09 08:40:40 lpd Exp $
% PostScript LanguageLevel 3 in-RIP trapping support.
ll3dict begin
% We need LanguageLevel 2 or higher in order to have setuserparams and
% defineresource.
languagelevel dup 2 max .setlanguagelevel
% ------ Trapping ------ %
% The PostScript-level trapping parameters are maintained in userdict,
% and explicitly reinstalled upon restore.
/Trapping mark
/settrapparams dup { % <paramdict> settrapparams -
/.trapparams .uservar dup length dict .copydict
dup 2 index {
% Stack: paramdict olddict olddict key value
2 index 2 index known { put dup } { pop pop } ifelse
} forall pop
dup .settrapparams % Let the operator check parameter validity.
.userdict /.trapparams 3 -1 roll put pop
} bind .makeoperator
/.copyparams { % <obj> .copyparams <obj'>
dup type /dicttype eq {
dup length dict .copydict
dup {
.copyparams 3 copy put pop pop
} forall
} {
dup type /arraytype eq {
[ exch { .copyparams } forall ]
} if
} ifelse
} odef
/currenttrapparams dup { % - currenttrapparams <paramdict>
/.trapparams .uservar .copyparams
} bind .makeoperator
/settrapzone dup { % - settrapzone -
% ****** DUMMY ******
newpath
} bind .makeoperator
% Define initial (dummy) trapping parameters.
% These values are mostly complete guesses.
userdict /.trapparams mark
/BlackColorLimit 1.0
/BlackDensityLimit 1.0
/BlackWidth 1.0
/ColorantZoneDetails 0 dict
/Enabled true
/HalftoneName null
/ImageInternalTrapping false
/ImageResolution 1
/ImageToObjectTrapping true
/ImageTrapPlacement /Center
/SlidingTrapLimit 1.0
/StepLimit 1.0
/TrapColorScaling 0.0
/TrapSetName null
/TrapWidth 1.0
.dicttomark readonly put
.dicttomark /ProcSet defineresource pop
% Define the InkParams and TrapParams resource categories.
{ /InkParams /TrapParams } {
/Generic /Category findresource dup maxlength 3 add dict .copydict begin
/InstanceType /dicttype def
currentdict end /Category defineresource pop
} forall
% Define the TrappingType resource category.
/Generic /Category findresource dup maxlength 3 add dict .copydict begin
/InstanceType /integertype def
/TrappingType currentdict end /Category defineresource pop
{1001} { dup /TrappingType defineresource pop } forall
.setlanguagelevel
end % ll3dict