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%% $Id: xyps-c.doc,v 3.7 1999/02/16 15:12:50 krisrose Exp $
%%
%% Xy-pic ``Colour extension'' PostScript backend support.
%% Copyright (c) 1993-1996 Ross Moore <ross@mpce.mq.edu.au>
%%
%% This file is part of the Xy-pic package for graphs and diagrams in TeX.
%% See the companion README and INSTALL files for further information.
%% Copyright (c) 1991-1996 Kristoffer H. Rose <krisrose@brics.dk>
%%
%% The Xy-pic package 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.
%%
%% The Xy-pic package 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 package; if not, write to the Free Software Foundation, Inc.,
%% 675 Mass Ave, Cambridge, MA 02139, USA.
%%
%% As a special exception, you may use this file and all files derived
%% from it without restrictions. This special exception was added with
%% version 3.7 of Xy-pic.
%%
\expandafter\ifx\csname xyps-cloaded\endcsname\empty
\message{not reloaded}\endinput \fi
\expandafter\let\csname xyps-cloaded\endcsname=\empty \xycatcodes
\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\paragraph*{Header:}\leavevmode
\DOCHEADER
\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{Colour}
The included file |xyps-c.tex| (version \stripRCS$Revision: 3.7 $) provides
\PS\ support for the effects defined in the |color| extension
in~\S??g[:color].
\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The \PS\ style methods are required, so ensure that they are loaded.
\DOCMODE(
\expandafter\ifx \csname xyps-sloaded\endcsname\empty\else
\xyinputorelse@{xyps-s}{\xyerror@{Could not load xyps-s}{}}%
\xycatcodes\fi
\DOCMODE)
\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
This file is loaded and its effects are activated automatically whenever
|\xyoption{color}| is requested and the current <driver> supports
colours using \PS. Should there be any need to turn off this support,
the following commands are available; they obey usual \TeX\ groupings.
%
\begin{defs}
|\NoPScolor| & remove \PS\ support\kern-50pt\cr
|\UsePScolor| & reinstate \PS.
\end{defs}
%
Without \PS\ support some drivers may still be able to provide some
support for colours. These commands are not guaranteed to work adequately
with all drivers. They are provided primarily for testing and
trouble-shooting; \eg~with <driver> configurations untested by the
authors of \Xy-pic, who should be notified of any difficulties.
\DOCMODE(
\xydef@\UsePScolor{\installPScolor@}
\xydef@\NoPScolor{\UnloadColor@}
\DOCMODE)
\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\paragraph*{Installation}
Installation consists of rebinding the macros |\xycolor@| and |\newxycolor@|
and of reloading the standard colours to include a description for \PS.
This installation should be delayed till after |color| and |ps| themselves
have been installed.
\DOCMODE(
\xydef@\installPScolor@{\installPSstyle@
\let\xymath@=\xyPSmath@ \let\xynomath@=\xyPSnomath@
\let\checkxyPScolor@=\checkxyPScolor@@
\let\xycolor@@=\xyPScolor@@
\xystandardcolors@
\xyuncatcodes }
\DOCMODE)
\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
All effects defined in the |color| extension can
be implemented using the \PS\ dictionary, loaded by |xyps-ps|.
This file provides ``generic'' \PS\ code which is known to work
correctly with most drivers. No attempt is made to provide special
code for particular drivers; for driver-specific variations, consult
the appropriate |xy|<driver>|.doc| file.
\DOCMODE(
\xydef@\xyPSmath@{\hbox\bgroup\dimen@=.55ex \checkxyPScolor@ \xyinside@}
\xydef@\xyPSnomath@{\hbox\bgroup\dimen@=\z@ \checkxyPScolor@ \xyinside@}
\xydef@\checkxyPScolor@@{\xycolor@raw@@{}\let\checkxyPScolor@=\relax}
\xylet@\checkxyPScolor@=\relax
\DOCMODE)
\DOCMODE(
\xydef@\xyPSnewcolor@#1#2#3#4#5{%
\expandafter\DN@\expandafter{\csname shape [#1]\endcsname}%
\DNii@{\relax}\ifx\next@\nextii@\newxycolor{#1}{}\relax\fi
\DNii@{#4}\ifx\nextii@\empty
\expandafter\DNii@\expandafter{\csname xyPSshape@#1@\endcsname}%
\expandafter\def\nextii@{\xyPScolor@{#2 #3}}\else
\expandafter\DNii@\expandafter{\csname xyPSshape@#1@\endcsname}%
\expandafter\def\nextii@{\xyPScolor@{#4}}\fi
\ifx\nextii@\empty\expandafter\def\next@{\xyPSnotimplemented@@`#1'@@}%
\else
\edef\tmp@{\noexpand\let\expandafter\noexpand\next@
\expandafter\noexpand\nextii@}\expandafter\tmp@\fi }
\xydef@\xyPScolor@{\ifPSspecials@\expandafter\xyPScolor@@
\else\expandafter\eat@\fi}
\xydef@\xyPScolor@@#1{\bgroup \checkXyStyle@
\def\preStyle@@{\expandafter\addtostyletoks@\expandafter{\xyPSpre@}}%
\def\postStyle@@{\expandafter\addtostyletoks@\expandafter{\xyPSpost@}}%
\let\modPSboxz@=\modXYstyle@ \xyPS@color@@{#1}%
\toks@={\egroup\let\xy@style@=\relax \def\Drop@@}%
\expandafter\addtotoks@\expandafter{\expandafter{\Drop@@}\def\Connect@@}%
\expandafter\addtotoks@\expandafter{\expandafter{\Connect@@}}%
\the\toks@ }
%\xydef@\xyPS@color@@#1{#1 /xycolor{#1}def }
\xydef@\xyPS@color@@#1{\xyPSsplitPS@{{#1}cc}{}}
\xydef@\xycolor@raw@@#1{\PSraw@@{xyc}}
\DOCMODE)
\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\paragraph*{The end \& Log}\leavevmode
\DOCMODE(
\endinput
% $Log: xyps-c.doc,v $
% Revision 3.7 1999/02/16 15:12:50 krisrose
% Interim release (Y&Y fonts now free).
%
% Revision 3.3 1996/12/18 10:05:50 ross
% minor improvements to file-loading commands
%
% Revision 3.1 1995/09/05 20:36:33 ross
% Release!
%
% Revision 3.0 1995/07/07 20:13:19 ross
% Major release w/new User's Guide!
%
% Revision 2.13 1995/07/04 15:04:51 ross
% Ready for release of v3.
%
% Revision 2.9 1994/06/09 14:38:56 ross
% Release 3beta.
% Includes support for special effects: Rotations, Scaling, Line-width, Colour.
% Back-ends are separated into separate files.
% More back-ends are supported, experimentally --- needs testing.
%
% Revision 2.9 1994/06/09 14:38:56 ross
% Release 3beta.
% Includes support for special effects: Rotations, Scaling, Line-width, Colour.
% Back-ends are separated into separate files.
% More back-ends are supported, experimentally --- needs testing.
%
% NEW for version 2.9 by by Ross Moore.
\DOCMODE)
\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Tell Emacs that this is a LaTeX document and how it is formatted:
% Local Variables:
% mode:latex
% fill-column:77
% fill-prefix:""
% End:
|
