% Copyright 2006 by Till Tantau
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file doc/generic/pgf/licenses/LICENSE for more details.

\ProvidesFileRCS $Header: /cvsroot/pgf/pgf/generic/pgf/systemlayer/pgfsys-dvips.def,v 1.14 2006/10/11 15:22:26 tantau Exp $

% Driver commands for dvips

\def\pgfsys@invoke#1{\special{ps:: #1}}
\def\pgfsys@outerinvoke#1{\special{ps: #1}}
\def\pgf@sys@postscript@header#1{\AtBeginDvi{\special{! #1}}}
\def\pgf@sys@postscript@object#1{\special{! #1}}


%
% Load common postscript commands:
%
\input pgfsys-common-postscript.def


%
% dvips-specific stuff:
%

\def\pgfsys@beginpicture{\special{ps: }\special{ps::[begin]}\pgfsys@invoke{pgfo}}
\def\pgfsys@endpicture{\pgfsys@invoke{pgfc}\special{ps::[end]}}
\def\pgfsys@hbox#1{%
  \pgfsys@invoke{pgfs}%
    \special{ps::[end]}%
      \wd#1=0pt%
      \ht#1=0pt%
      \dp#1=0pt%
      \box#1
    \special{ps::[begin]}%
  \pgfsys@invoke{pgfr}%
}
\def\pgfsys@begininvisible{%
  \special{ps::[begin]}%
  \pgfsys@invoke{gsave nulldevice}%
  \special{ps::[end]}}
\def\pgfsys@endinvisible{%
  \special{ps::[begin]}%
  \pgfsys@invoke{grestore}%
  \special{ps::[end]}%
}
\def\pgfsys@color@unstacked#1{\special{ps: \XC@usecolor{#1}}}
\def\pgfsys@imagesuffixlist{epsi:eps:ps}

\def\pgfsys@papersize#1#2{%
  \expandafter\gdef\expandafter\pgfsys@atbegindocument\expandafter{\pgfsys@atbegindocument\special{papersize=#1,#2}}}

\expandafter\gdef\expandafter\pgfsys@atbegindocument\expandafter{\pgfsys@atbegindocument%
  \pgf@sys@postscript@header{
    /pgfsc{}B% stroke color is empty by default
    /pgffc{}B% fill color is empty by default
    /pgfstr{stroke}B%
    /pgffill{fill}B%
    /pgfeofill{eofill}B%
    /pgfe{a dup 0 rlineto exch 0 exch rlineto neg 0 rlineto closepath}B% rectangle
    /pgfw{setlinewidth}B% setlinewidth
    /pgfs{save pgfpd 72 Resolution div 72 VResolution div neg scale 
      magscale{1 DVImag div dup scale}if 
      pgfx neg pgfy neg translate pgffoa .setopacityalpha}B% save
    /pgfr{pgfsd restore}B %restore
    userdict begin%
    /pgfo{pgfsd /pgfx currentpoint /pgfy exch def def @beginspecial}B %open
    /pgfc{newpath @endspecial pgfpd}B %close
    /pgfsd{globaldict /pgfdelta /delta where {pop delta} {0} ifelse put}B% save delta
    /pgfpd{/delta globaldict /pgfdelta get def}B % put delta
    /.setopacityalpha where {pop} {/.setopacityalpha{pop}def} ifelse % install .setopacityalpha 
    /.pgfsetfillopacityalpha{/pgffoa exch def
      /pgffill{gsave pgffoa .setopacityalpha fill 1 .setopacityalpha newpath fill grestore}B
      /pgfeofill{gsave pgffoa .setopacityalpha eofill1 .setopacityalpha newpath eofill grestore}B}B
    /.pgfsetstrokeopacityalpha{/pgfsoa exch def
      /pgfstr{gsave pgfsoa .setopacityalpha stroke grestore}B}B
    /pgffoa 1 def
    /pgfsoa 1 def
    end
  }%
}

\AtBeginDocument{ % needed for plain TeX
  \pgfsys@atbegindocument
  \let\pgfsys@atbegindocument=\relax
}

\endinput

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