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156 lines
5.3 KiB
TeX
156 lines
5.3 KiB
TeX
%% Copyright (C) 2011-2012 by Martin Scharrer <martin@scharrer-online.de>
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%% ----------------------------------------------------------------------
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%% This work may be distributed and/or modified under the
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%% conditions of the LaTeX Project Public License, either version 1.3
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%% of this license or (at your option) any later version.
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%% The latest version of this license is in
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%% http://www.latex-project.org/lppl.txt
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%% and version 1.3 or later is part of all distributions of LaTeX
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%% version 2005/12/01 or later.
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%%
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%% This work has the LPPL maintenance status `maintained'.
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%%
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%% The Current Maintainer of this work is Martin Scharrer.
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%%
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%% This work consists of the files adjcalc.dtx, adjustbox.ins
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%% and the derived file adjcalc.sty.
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%% It is part of the larger adjustbox bundle.
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%%
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\ProvidesPackage{adjcalc}[%
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2012/05/16
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v1.1
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Provides advanced setlength with multiple back-ends (calc, etex, pgfmath)]
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\RequirePackage{xkeyval}
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\def\adjcalc@atend{%
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\begingroup
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\expandafter\ifx\csname glueexpr\endcsname\relax
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\endgroup
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\RequirePackage{calc}%
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\adjcalc@calc
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\def\adjcalc@etex{\PackageError{adjcalc}{e-TeX not available for current compiler!}}%
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\else
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\endgroup
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\adjcalc@etex
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\fi
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}
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\def\adjcalc@pgfmath{\AtEndOfPackage{\RequirePackage{pgf}}\def\adjcalc@atend{\adjcalc@pgfmath}}
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\def\adjcalc@etex{\def\adjcalc@atend{\adjcalc@etex}}
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\def\adjcalc@calc{\AtEndOfPackage{\RequirePackage{calc}}\def\adjcalc@atend{\adjcalc@calc}}
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\def\adjcalc@overwrite{\AtEndOfPackage{\adjcalc@overwrite}}
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\def\adjcalc@defaultunit{bp}%
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\DeclareOptionX<adjcalc>{pgfmath}{\adjcalc@pgfmath}
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\DeclareOptionX<adjcalc>{etex}{\adjcalc@etex}
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\DeclareOptionX<adjcalc>{calc}{\adjcalc@calc}
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\DeclareOptionX<adjcalc>{none}{%
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\let\adjcalc@atend\relax
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\let\adjcalc@overwrite\relax
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\def\adjsetlength{\setlength}%
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\def\adjaddtolength{\addtolength}%
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\def\adjsetcounter{\setcounter}%
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\def\adjaddtocounter{\addtocounter}%
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}
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\DeclareOptionX<adjcalc>{overwrite}{\adjcalc@overwrite}
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\DeclareOptionX<adjcalc>{defaultunit}[bp]{%
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\begingroup
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\def\@tempa{#1}%
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\def\@tempb{none}%
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\ifx\@tempa\@tempb% 'none':
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\endgroup
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\def\adjsetlengthdefault{\adjsetlength}%
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\else
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\ifx\@tempb\adjcalc@defaultunit
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\endgroup
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% was 'none' before
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\let\adjsetlengthdefault\adjsetlengthdefault@
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\else
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\endgroup
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\fi
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\fi
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\def\adjcalc@defaultunit{#1}%
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}
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\ProcessOptionsX*<adjcalc>
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\disable@keys{adjcalc}{none}
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\def\adjcalcset{%
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\setkeys{adjcalc}%
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}
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\def\adjcalc@etex{%
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\protected\def\adjsetlength##1##2{%
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##1=\glueexpr(##2)\relax
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}%
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\protected\def\adjaddtolength##1##2{%
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\advance##1 by \glueexpr(##2)\relax
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}%
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\protected\def\adjsetcounter##1##2{%
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\@ifundefined{c@##1}%
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{\@nocounterr{##1}}%
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{\global\csname c@##1\endcsname\numexpr(##2)\relax}%
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}%
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\protected\def\adjaddtocounter##1##2{%
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\@ifundefined{c@##1}%
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{\@nocounterr{##1}}%
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{\global\advance\csname c@##1\endcsname\numexpr(##2)\relax}%
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}%
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\def\adjsetlengthdefault@##1##2{%
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\@defaultunits##1=\glueexpr##2 \adjcalc@defaultunit\relax\@nnil
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}%
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\let\adjsetlengthdefault\adjsetlengthdefault@
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}
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\newif\if@adjcalc@needsdefault
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\def\adjcalc@calc{%
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\DeclareRobustCommand\adjsetlength{\calc@assign@skip}%
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\DeclareRobustCommand\adjaddtolength[1]{\calc@assign@skip{\advance ##1}}%
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\DeclareRobustCommand\adjsetcounter[2]{\@ifundefined{c@##1}{\@nocounterr{##1}}{\calc@assign@count{\global\csname c@##1\endcsname}{##2}}}%
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\DeclareRobustCommand\adjaddtocounter[2]{\@ifundefined{c@##1}{\@nocounterr{##1}}{\calc@assign@count{\global\advance\csname c@##1\endcsname}{##2}}}%
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\def\adjsetlengthdefault@##1##2{%
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\begingroup
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\def\calc@post@scan####1!{%
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\def\@tempa{####1}%
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\ifx\@tempa\@empty
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\endgroup% to end calc processing
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% is number only
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\global\@adjcalc@needsdefaulttrue
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\else
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\endgroup% to end calc processing
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% full expression
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\global\@adjcalc@needsdefaultfalse
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\fi
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}%
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\calc@assign@skip{##1}{##2 \adjcalc@defaultunit}%
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\endgroup
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\if@adjcalc@needsdefault
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##1=##2 \adjcalc@defaultunit\relax
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\else
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\calc@assign@skip{##1}{##2}%
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\fi
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}%
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\def\adjcalc@checkdefault##1\@nnil##2##3{%
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\ifx\relax##1\relax\else
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\calc@assign@skip{##2}{##3}%
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\fi
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}%
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\let\adjsetlengthdefault\adjsetlengthdefault@
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}
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\def\adjcalc@pgfmath{%
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\DeclareRobustCommand\adjsetlength{\pgfmathsetlength}%
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\DeclareRobustCommand\adjaddtolength{\pgfmathaddtolength}%
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\DeclareRobustCommand\adjsetcounter{\pgfmathsetcounter}%
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\DeclareRobustCommand\adjaddtocounter{\pgfmathaddtocounter}%
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\def\adjsetlengthdefault@##1##2{%
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\edef\pgfmathresultunitscale{1\adjcalc@defaultunit}%
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\let\pgfmathpostparse\pgfmathscaleresult
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\pgfmathparse{##2}%
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##1=\pgfmathresult pt\relax
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}%
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\let\adjsetlengthdefault\adjsetlengthdefault@
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}
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\def\adjcalc@overwrite{%
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\let\setlength\adjsetlength
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\let\addtolength\adjaddtolength
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\let\setcounter\adjsetcounter
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\let\addtocounter\adjaddtocounter
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}
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\adjcalc@atend
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\endinput
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%%
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%% End of file `adjcalc.sty'.
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