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542 lines
19 KiB
542 lines
19 KiB
% Copyright 2006 by Till Tantau
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%
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% This file may be distributed and/or modified
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%
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% 1. under the LaTeX Project Public License and/or
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% 2. under the GNU Public License.
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%
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% See the file doc/generic/pgf/licenses/LICENSE for more details.
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\ProvidesFileRCS{pgfcoreexternal.code.tex}
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\newif\ifpgfexternal@aux@in@dpth
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\newif\ifpgfexternal@info
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\pgfkeys{
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/pgf/images/include external/.code={\pgfimage{#1}},
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/pgf/images/aux in dpth/.is if=pgfexternal@aux@in@dpth,
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/pgf/images/aux in dpth/.default=true,
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/pgf/images/trim external/.code n args={4}{%
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\def\pgf@external@kern@left{#1}%
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\def\pgf@external@kern@bottom{#2}%
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\def\pgf@external@kern@right{#3}%
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\def\pgf@external@kern@top{#4}%
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\ifx\pgf@external@kern@left\pgfutil@empty\def\pgf@external@kern@left{0sp}\fi%
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\ifx\pgf@external@kern@bottom\pgfutil@empty\def\pgf@external@kern@bottom{0sp}\fi%
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\ifx\pgf@external@kern@right\pgfutil@empty\def\pgf@external@kern@right{0sp}\fi%
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\ifx\pgf@external@kern@top\pgfutil@empty\def\pgf@external@kern@top{0sp}\fi%
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},
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/pgf/images/trim external={1truein}{1truein}{1truein}{1truein},
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/pgf/images/external info/.is if=pgfexternal@info,
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/pgf/images/external info/.default=true,
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}
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% The external read/write mechanism is used as follows:
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%
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% In your document, you put a number or all of your pgfpicture (or
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% tikzpicture) environments inside a pair of \beginpgfexternal and
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% \endpgfexternal. The \beginpgfexternal gets one parameter called the
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% graphics name.
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%
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% Once this is done, the next step is to declare the names of your
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% graphics in the document at the beginning using the
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% \pgfdeclaregraphicname command.
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%
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% Now, when you typeset your document, each time a \beginpgfexternal
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% command is encountered, it will be checked whether the corresponding
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% graphics file exists. If this is the case, it will be included and
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% the code between \beginpgfexternal and \endpgfexternal is
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% ignored. Otherwise, the code is executed normally.
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%
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% Things change when you run tex on your file with the \jobname set to
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% the name of a declared graphics name. In this case, only your
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% graphic will be typeset, the rest of the document will be "thrown away".
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% To be more precise, everything is gobbled up to the beginning
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% of the first \beginpgfexternal with the given graphics name. Then,
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% the content of the "environment" is put in a box (this "environment"
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% need not contain a graphics, it may contain anything that can be put
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% in a box). Then a single page is output whose size is exactly the
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% size of the picture.
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%
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% So, once you have run tex repeatedly, each time with the jobname set
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% to each of the graphics, you can then run tex on the whole document
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% and this will cause all graphics to be included rather than begin
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% typeset.
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%
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% Finally, once all the graphics have been created, you can also say
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% \input pgfexternal.tex instead of including pgf/TikZ.
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\newif\ifpgfexternalreadmainaux
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\pgfexternalreadmainauxtrue
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% Tells pgf which jobname is the name of the real file
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%
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% #1 = name
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%
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% Description:
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%
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% This command is used to tell pgf that the file named #1 should be
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% typeset normally. If \jobname is not equal to #1, only
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% the graphic called \jobname will be typeset.
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%
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% Example:
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%
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% \pgfrealjobname{survey}
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%
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% Note that afterwards, \jobname will be set to the argument. In our
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% example, \jobname will be 'survey'. This is to accomplish
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% compatibility with aux-file generation.
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\def\pgfrealjobname#1{%
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\global\let\pgfactualjobname=\jobname
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\edef\pgf@tempa{\expandafter\string\csname #1\endcsname}%
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\edef\pgf@tempb{\expandafter\string\csname\jobname\endcsname}%
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\ifx\pgf@tempa\pgf@tempb%
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\else%
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\pgf@external@grabshipouttrue%
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\pgfexternal@nofiles% see also \pgf@external@init@aux@in@dpth
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\ifpgfexternalreadmainaux
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% and reset the jobname. This should allow to handle any
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% \label/\ref constructions which are stored in \jobname.aux (and
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% which won't be found otherwise)
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\gdef\jobname{#1}%
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\fi
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\ifpgfexternal@aux@in@dpth
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\csname newwrite\endcsname\w@pgfexternal@auxout
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\fi
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\pgfexternal@geometry@compatibility
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\fi%
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\gdef\pgfrealjobname##1{}% avoid multiple calls.
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}
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\def\pgfexternal@geometry@compatibility{%
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% check if \usepackage{geometry} is loaded:
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\pgfutil@ifundefined{geometry}{%
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}{%
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% The geometry package hooks into \begin{document}, evaluates
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% its driver -- and generates \special instructions to set the
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% paper size.
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%
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% Unfortunately, this confuses dvips utterly - and perhaps
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% other drivers as well.
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%
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% Thus, if we currently about to generate some external
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% graphics, we WANT to disable geometry (it has no purpose in
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% this context anyway).
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%
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% This here works well:
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\pgf@typeout{Package TikZ externalization: calling \string\geometry{driver=none} during externalization.^^J}%
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\geometry{driver=none}%
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}%
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}%
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\def\pgfexternal@nofiles{%
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% replace \relax. The \nofiles macros does
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% \let\makeglossary=\relax
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% but the glossary.sty calls \renewcommand\makeglossary (which
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% will fail if \makeglossary=\relax). Stupid, but it works.
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\let\pgfexternal@nofiles@=\relax
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\def\relax{\relax}%
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%
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% suppress generation of LaTeX .aux, .toc etc files.
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% generation of these files is not thread-safe.
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% the \csname \endcsname yields \relax if \nofiles doesn't exist.
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\csname nofiles\endcsname
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%
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\let\relax=\pgfexternal@nofiles@
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}%
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\newif\ifpgf@external@grabshipout
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\newbox\pgfexternal@startupbox
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\pgfutil@ifundefined{AtBeginDocument}{}{%
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\AtBeginDocument{%
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\ifpgf@external@grabshipout%
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\global\let\pgfexternal@originalshipout=\shipout%
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\global\def\shipout{\setbox\pgfpic=}%
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\maxdeadcycles=10000%
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% Ok, gather everything we have seen up to now in a box. This box
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% will contain any specials that have been used.
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{%
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\output{\global\setbox\pgfexternal@startupbox=\vbox{\csname @begindvi\endcsname\unvbox255}}%
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\hbox{}\eject%
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}%
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\fi%
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}
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}%
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\pgfutil@ifundefined{AtEndDocument}{}{%
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\AtEndDocument{%
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\ifpgf@external@grabshipout
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\pgfutil@ifundefined{pgfexternal@did@a@shipout}{%
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\pgfexternal@error@no@shipout
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}{}%
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\fi
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}%
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}
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% This will be overwritten by the tikz external lib if it is loaded.
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\def\pgfexternal@error@no@shipout{%
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\pgferror{Sorry, image externalization failed: the resulting image was EMPTY. I tried to externalize '\pgfactualjobname'. Perhaps there was a typo somewhere? Please check that your document contains '\string\beginpgfgraphicnamed{\pgfactualjobname} ... \string\endpgfgraphicnamed'}%
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}%
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% "Environment" for an external graphic.
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%
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% #1 = graphic name
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%
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% Example:
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%
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% \beginpgfgraphicnamed{main-graphic2}
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% \begin{tikzpicture}
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% ...
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% \end{tikzpicture}
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% \endpgfgraphicnamed
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\def\pgf@externalbegin#1{%
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% First, check whether we wish to grab this graphic:
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\let\pgf@next=\pgf@external@normal%
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\ifpgf@external@grabshipout%
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\edef\pgf@tempa{\expandafter\string\csname #1\endcsname}%
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\edef\pgf@tempb{\expandafter\string\csname\pgfactualjobname\endcsname}%
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\ifx\pgf@tempa\pgf@tempb%
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\let\pgf@next=\pgf@external@grab%
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\fi%
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\fi%
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\pgf@next{#1}%
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}
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\AtBeginDocument{
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\let\beginpgfgraphicnamed=\pgf@externalbegin% overwrite definition of pgfexternal.tex if necessary
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\let\endpgfgraphicnamed=\unskip
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}
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% Normal operation: Include an external graphic instead of the
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% picture, if such an external picture exists.
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\def\pgf@external@normal#1{%
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\let\pgf@filename=\pgfutil@empty%
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\expandafter\pgf@findfile\pgfsys@imagesuffixlist:+{#1}%
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\ifx\pgf@filename\pgfutil@empty%
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% Ok, no such image... Just typeset the picture normally.
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\let\pgf@next=\relax%
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\else%
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\let\pgf@next=\pgf@replacepicturebygraphic%
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\fi%
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\pgf@next%
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}
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\long\def\pgf@replacepicturebygraphic#1\endpgfgraphicnamed{%
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\expandafter\pgfincludeexternalgraphics\expandafter{\pgf@filename}\unskip
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}
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% This is almost the same as \includegraphics{#1}, but it checks
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% whether '#1.dpth' exists. In such case, it restores the boxes depth
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% stored in #1.dpth.
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%
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% Furthermore, the .dpth file may contain .aux related information
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% collected for the external graphics (references). They start after
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% the first line (if any).
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\def\pgfincludeexternalgraphics#1{%
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\begingroup
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\pgfexternalreaddpth{#1}%
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\pgfkeysifdefined{/pgf/images/include external/#1/.@cmd}{%
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\pgfkeysgetvalue{/pgf/images/include external/#1/.@cmd}\pgf@tempa
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\pgfkeyslet{/pgf/images/include external/.@cmd}\pgf@tempa
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}{}%
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\setbox1=\hbox{\pgfkeysvalueof{/pgf/images/include external/.@cmd}{#1}\pgfeov}%
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\ifdim\pgfexternaltrimleft=0sp \else \kern\pgfexternaltrimleft\relax \fi
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\ifdim\pgfexternaldepth=0pt
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\box1
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\else
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\dimen0=\pgfexternaldepth\relax
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\hbox{\lower\dimen0 \box1 }%
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\fi
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\ifdim\pgfexternaltrimright=0sp \else \kern\pgfexternaltrimright\relax \fi
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\endgroup
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}
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% Reads the .dpth file which contains meta data of the external
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% picture.
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%
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% This command handles the following stuff:
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% - it defines \pgfexternaldepth . The macro contains the contents of
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% a line which does not start with a control sequence (for example a
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% line containing '50pt')
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% - it defines \pgfexternaltrimleft and \pgfexternaltrimright
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% - it checks if the .dpth file contains content stored by means of
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% \pgfexternalstorecommand. If so, the argument of
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% \pgfexternalstorecommand will be restored.
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% - anything else will be appended to the main .aux file, assuming that
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% it contains \label or \ref information (only if the LaTeX switch
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% \if@filesw is \iftrue).
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%
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%
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% #1: the image file name (such that #1.dpth exists)
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\def\pgfexternalreaddpth#1{%
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% no \begingroup. Handle that manually:
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\edef\pgfexternalreaddpth@restore{%
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\noexpand\endlinechar=\the\endlinechar\space
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\noexpand\catcode`\noexpand\@=\the\catcode`\@\space
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}%
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%
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\def\pgfexternaldepth{0sp}%
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\def\pgfexternaltrimleft{0sp}%
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\def\pgfexternaltrimright{0sp}%
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\endlinechar=-1 % suppress white space at end
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\catcode`\@=11
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\openin\r@pgf@reada=#1.dpth
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\pgfincludeexternalgraphics@read@dpth
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%
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\pgfexternalreaddpth@restore
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}%
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%
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% The .dpth consists of 0-N lines, where each is either a single
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% dimension (the box' depth) or something which belongs to the .aux
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% file (such lines will always start with a macro).
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\def\pgfincludeexternalgraphics@read@dpth{%
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\ifeof\r@pgf@reada
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\closein\r@pgf@reada
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\else
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\read\r@pgf@reada to\pgfincludeexternalgraphics@auxline
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\ifx\pgfincludeexternalgraphics@auxline\pgfutil@empty
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\else
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\expandafter\pgfincludeexternalgraphics@read@dpth@line\pgfincludeexternalgraphics@auxline\pgfincludeexternalgraphics@read@dpth@line@EOI
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\fi
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\expandafter\pgfincludeexternalgraphics@read@dpth
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\fi
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}%
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\def\pgfexternal@restore#1{#1}%
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\long\def\pgfincludeexternalgraphics@read@dpth@line@getfirst#1#2\pgfincludeexternalgraphics@read@dpth@line@EOI{%
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\def\pgf@first{#1}%
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}%
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\long\def\pgfincludeexternalgraphics@read@dpth@line#1\pgfincludeexternalgraphics@read@dpth@line@EOI{%
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\pgfincludeexternalgraphics@read@dpth@line@getfirst#1\pgfincludeexternalgraphics@read@dpth@line@EOI
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\expandafter\ifcat\expandafter\noexpand\pgf@first\relax
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% Ah -- the first token is a control sequence. It belongs to
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% the .aux file.
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%
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\expandafter\ifx\pgf@first\pgfexternal@restore
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% if the first line in the .dpth file starts with the
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% magic string \pgfexternal@restore, the complete line
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% will be executed as-is. Example:
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% \pgfexternal@restore{\def\somevalue{1}}
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#1%
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\else
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% do NOT execute #1! many LaTeX commands don't support it (\label for example)
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\pgfutil@ifundefined{if@filesw}{%
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% sorry, .aux file support only for latex
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}{%
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% append to main .aux file (for forward references)
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\if@filesw
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{%
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\toks0={#1}%
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% believe it or not, but the
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% \def\dpthimport{...}\dpthimport *makes* a
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% difference! In ensures any occurring `##' characters are properly expanded to `#'.
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\immediate\write\@auxout{%
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\noexpand\def\noexpand\dpthimport{\the\toks0}\noexpand\dpthimport}%
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}%
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\fi
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}%
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\fi
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\else% it is the depth (which is simply a number for backwards compatibility)
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\def\pgfexternaldepth{#1}%
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\fi
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}%
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% Stores '#1' (expanded!) into the .dpth file of the currently
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% exported image.
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%
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% This command has only an effect if an image is being exported.
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%
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% The stored contents will be read in the context where
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% /pgf/images/include external is active (i.e. by
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% \pgfexternalreaddpth).
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%
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\def\pgfexternalstorecommand#1{%
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}%
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\def\pgfexternalstorecommand@isexporting#1{%
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\immediate\write\w@pgfexternal@auxout{\noexpand\pgfexternal@restore{#1}}%
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}%
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% Grab operation: If jobname matches the graphic name, typeset this
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% picture normal.
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% REMARK:
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% this method is also invoked from within the tikz external library.
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\def\pgf@external@grab#1{%
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\def\pgf@filename{#1}%
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\ifpgfexternal@aux@in@dpth
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\begingroup
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\pgf@external@init@aux@in@dpth
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\let\G@refundefinedtrue=\pgf@external@grab@refundefinedtrue
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\fi
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\gdef\pgf@trimleft@final{0sp}%
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\gdef\pgf@trimright@final{0sp}%
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\setbox\pgfpic=\hbox\bgroup\bgroup%
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\let\endpgfgraphicnamed=\pgf@externalend%
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}
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{\catcode`\^=12 \gdef\pgfexternal@hat{^}}
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\expandafter\let\expandafter\pgf@external@grab@refundefinedtrue@orig\csname G@refundefinedtrue\endcsname
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\def\pgf@external@grab@refundefinedtrue{%
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\pgf@external@grab@refundefinedtrue@orig
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\begingroup
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\def\n{\pgfexternal@hat\pgfexternal@hat J}%
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\pgfexternalstorecommand{%
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\pgf@external@grab@refundefinedtrue@code
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\noexpand\immediate\noexpand\write16{\pgf@external@grab@refundefinedtrue@warning}%
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\noexpand\G@refundefinedtrue
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}%
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\endgroup
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}%
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% A hook. will be overwritten by \usetikzlibrary{external}
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\def\pgf@external@grab@refundefinedtrue@code{}
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\def\pgf@external@grab@refundefinedtrue@warning{%
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LaTeX Warning: External picture `\pgfactualjobname' contains undefined references\noexpand\on@line.\n
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}%
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\let\pgf@external@@protected@write@orig=\protected@write
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\long\def\pgf@external@@protected@write@immediate#1#2#3{%
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\begingroup
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\let\pgf@write@=\write
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\def\write{\noexpand\immediate\pgf@write@}%
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\pgf@external@@protected@write@orig{#1}{#2}{#3}%
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\endgroup
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}%
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\def\pgf@external@init@aux@in@dpth{%
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\let\pgfexternalstorecommand=\pgfexternalstorecommand@isexporting
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%
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% tell LaTeX to write aux files...
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\csname @fileswtrue\endcsname
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% ... but redirect output to the .dpth file!
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\immediate\openout\w@pgfexternal@auxout=\pgf@filename.dpth
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\let\@auxout=\w@pgfexternal@auxout
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% ... and disable the correct page numbers. I can't get that
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% (because the correct page number is only available in the
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% shipout routine). Use immediate output:
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\let\protected@write=\pgf@external@@protected@write@immediate
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}%
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\def\pgf@externalend@storeshifts#1{%
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\immediate\write#1{\the\dp\pgfpic}% store the depth simply as number for backw. compat.
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\ifx\pgf@trimleft@final\pgfutil@empty\else
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\immediate\write#1{\noexpand\pgfexternal@restore{\noexpand\def\noexpand\pgfexternaltrimleft{\pgf@trimleft@final}}}%
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\fi
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\ifx\pgf@trimright@final\pgfutil@empty\else
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\immediate\write#1{\noexpand\pgfexternal@restore{\noexpand\def\noexpand\pgfexternaltrimright{\pgf@trimright@final}}}%
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\fi
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\ifpgfexternal@info
|
|
\immediate\write#1{\noexpand\pgfexternal@restore{\noexpand\def\noexpand\pgfexternalwidth{\the\wd\pgfpic}}}%
|
|
\immediate\write#1{\noexpand\pgfexternal@restore{\noexpand\def\noexpand\pgfexternalheight{\the\dimen0}}}%
|
|
\fi
|
|
}
|
|
% REMARK:
|
|
% this method is also invoked from within the tikz external library.
|
|
\def\pgf@externalend{%
|
|
\unskip\egroup\egroup%
|
|
{%
|
|
\def\pgf@external@trim{0}%
|
|
\def\pgf@external@store@dpth{0}%
|
|
%
|
|
\ifpgf@trim@lowlevel
|
|
\gdef\pgf@trimleft@final{}%
|
|
\gdef\pgf@trimright@final{}%
|
|
\else
|
|
\ifdim\pgf@trimleft@final=0sp \gdef\pgf@trimleft@final{} \else\def\pgf@external@trim{1}\fi
|
|
\ifdim\pgf@trimright@final=0sp \gdef\pgf@trimright@final{} \else\def\pgf@external@trim{1}\fi
|
|
\if1\pgf@external@trim
|
|
% UNDO the trimming! export to pdf doesn't supported trimmed
|
|
% bounding boxes (has to do with the mediabox/trimbox etc).
|
|
% I'll keep the bounding box intact and store the trim information
|
|
% into the .dpth file.
|
|
\setbox\pgfpic=\hbox{%
|
|
\ifx\pgf@trimleft@final\pgfutil@empty\else\kern-\pgf@trimleft@final\fi
|
|
\box\pgfpic
|
|
\ifx\pgf@trimright@final\pgfutil@empty\else\kern-\pgf@trimright@final\fi
|
|
}%
|
|
\def\pgf@external@store@dpth{1}%
|
|
\fi
|
|
\fi
|
|
%
|
|
\parindent0pt % leave the space
|
|
% \leftmargin0pt%
|
|
% \rightmargin0pt%
|
|
\hoffset=0pt % reset to default
|
|
\voffset=0pt
|
|
\dimen0\ht\pgfpic%
|
|
\advance\dimen0\dp\pgfpic%
|
|
\ifdim\dp\pgfpic=0pt\relax
|
|
\else% store the picture's depth. Otherwise, it would be lost.
|
|
\def\pgf@external@store@dpth{1}%
|
|
\fi
|
|
\ifpgfexternal@info
|
|
\def\pgf@external@store@dpth{1}%
|
|
\fi
|
|
%
|
|
\if1\pgf@external@store@dpth
|
|
\ifpgfexternal@aux@in@dpth
|
|
\pgf@externalend@storeshifts\@auxout
|
|
\immediate\closeout\@auxout
|
|
\else
|
|
\immediate\openout\pgf@plotwrite=\pgf@filename.dpth
|
|
\pgf@externalend@storeshifts\pgf@plotwrite
|
|
\immediate\closeout\pgf@plotwrite
|
|
\fi
|
|
\fi
|
|
\pgfsys@prepare@papersize{\the\wd\pgfpic}{\the\dimen0}%
|
|
%
|
|
\setbox0=\vbox{%
|
|
% I admit that I don't know why there is this kerning:
|
|
\kern -\pgf@external@kern@top\relax%
|
|
\hbox{%
|
|
\kern -\pgf@external@kern@left\relax%
|
|
\hbox to0pt{%
|
|
\wd\pgfexternal@startupbox=0pt %
|
|
\ht\pgfexternal@startupbox=0pt %
|
|
\dp\pgfexternal@startupbox=0pt %
|
|
\box\pgfexternal@startupbox%
|
|
\pgfsys@atbegindocument\hss}%
|
|
\box\pgfpic%
|
|
\kern\pgf@external@kern@right\relax%
|
|
}%
|
|
\kern\pgf@external@kern@bottom\relax%
|
|
}%
|
|
%
|
|
% compatibility with eso-pic package: \nointerlineskip is not
|
|
% allowed here, but the eso-pic package uses \nointerlineskip in
|
|
% its shipout routine.
|
|
\let\pgfexternal@nointerlineskip@orig=\nointerlineskip
|
|
\let\nointerlineskip=\pgfexternal@nointerlineskip
|
|
%
|
|
\pgfexternal@originalshipout\box0 %
|
|
\gdef\pgfexternal@did@a@shipout{1}%
|
|
}%
|
|
\ifpgfexternal@aux@in@dpth
|
|
\endgroup
|
|
\fi
|
|
}
|
|
|
|
\def\pgfexternal@nointerlineskip{%
|
|
\ifvmode
|
|
\pgfexternal@nointerlineskip@orig
|
|
\else
|
|
\relax% \nointerlineskip in horizontal mode not allowed. Silently ignore the error message.
|
|
\fi
|
|
}%
|
|
|
|
\endinput
|
|
% vi: tabstop=4 shiftwidth=2 expandtab
|
|
|