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tcbfitting.code.tex
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%% The LaTeX package tcolorbox - version 6.0.3 (2023/03/17)
%% tcbfitting.code.tex: Code for fit boxes
%%
%% -------------------------------------------------------------------------------------------
%% Copyright (c) 2006-2023 by Prof. Dr. Dr. Thomas F. Sturm <thomas dot sturm at unibw dot de>
%% -------------------------------------------------------------------------------------------
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `author-maintained'.
%%
%% This work consists of all files listed in README
%%
%\makeatletter
\tcb@set@library@version{6.0.3}
\newdimen\tcbfitdim
\newdimen\tcb@lowerfitdim
\newdimen\tcb@upperfitdim
\newif\iftcb@continue
\tcbset{%
fit/.style={capture=fitbox},%
fit to/.style args={#1 and #2}{capture=fitbox,width=#1,height=#2},%
fit to height/.style={capture=fitbox,height=#1},%
fit basedim/.code={\def\kvtcb@fit@basedim{#1}\tcbfitdim\kvtcb@fit@basedim},%
fit skip/.store in=\kvtcb@fit@skip,%
fit fontsize macros/.code={%
\renewcommand\tiny{\tcb@setfontsize\tiny{0.5}}%
\renewcommand\scriptsize{\tcb@setfontsize\scriptsize{0.7}}%
\renewcommand\footnotesize{\tcb@setfontsize\footnotesize{0.8}}%
\renewcommand\small{\tcb@setfontsize\small{0.9}}%
\renewcommand\normalsize{\tcb@setfontsize\normalsize{1}}%
\renewcommand\large{\tcb@setfontsize\large{1.2}}%
\renewcommand\Large{\tcb@setfontsize\Large{1.44}}%
\renewcommand\LARGE{\tcb@setfontsize\LARGE{1.728}}%
\renewcommand\huge{\tcb@setfontsize\huge{2.0736}}%
\renewcommand\Huge{\tcb@setfontsize\Huge{2.48832}}},%
fit height plus/.style={fit,height plus=#1},%
fit width plus/.dimstore in=\kvtcb@fit@plus@width,%
fit height from/.style args={#1 to #2}{fit,height from={#1} to {#2}},
fit width from/.style args={#1 to #2}{fit,width={#1},fit width plus={#2-#1}},
fit maxstep/.store in=\kvtcb@fit@maxstep,%
fit maxfontdiff/.store in=\kvtcb@fit@maxfontdiff,%
fit maxfontdiffgap/.store in=\kvtcb@fit@maxfontdiffgap,%
fit maxwidthdiff/.store in=\kvtcb@fit@maxwidthdiff,%
fit maxwidthdiffgap/.store in=\kvtcb@fit@maxwidthdiffgap,%
fit warning/.is choice,
fit warning/on/.code={\let\tcb@fit@warn@begin=\@empty%
\let\tcb@fit@warn@end=\@empty},
fit warning/off/.code={\def\tcb@fit@warn@begin{\hbadness=10000\relax}%
\let\tcb@fit@warn@end=\@empty},
fit warning/final/.code={\tcb@cur@hbadness=\hbadness\def\tcb@fit@warn@begin{\hbadness=10000\relax}%
\def\tcb@fit@warn@end{\hbadness=\tcb@cur@hbadness\relax\tcb@fit@@box}},
fit algorithm/.is choice,
fit algorithm/fontsize/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@fontsize},
fit algorithm/fontsize*/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@fontsize@star},
fit algorithm/areasize/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@areasize},
fit algorithm/areasize*/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@areasize@star},
fit algorithm/hybrid/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@hybrid},
fit algorithm/hybrid*/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@hybrid@star},
fit algorithm/squeeze/.code={\let\tcbox@fitalgorithm=\tcbox@fitalgorithm@squeeze},
spartan@fit/.style={fit algorithm=squeeze},
}
\def\tcb@@capture@fitbox{%
\let\endtcolorbox=\relax%
\iftcb@wrap@environment%
\expandafter\@firstoftwo%
\else%
\expandafter\@secondoftwo%
\fi%
{\begingroup\tcb@hack@currenvir%
\Collect@Body\tcbox@inner@fitbox@collected@for@wrapping}%
{\Collect@Body\tcbox@inner@fitbox@collected}%
}
\long\def\tcbox@inner@fitbox@collected@for@wrapping#1\end#2{%
\endgroup%
\let\tcb@end@tcolorboxenvironment\relax%
\tcbox@inner@fitbox@collected{#1\end{#2}}%
\end{tcolorbox}%
}
\def\tcbfontsize#1{\fontsize{#1\tcbfitdim}{#1\dimexpr\kvtcb@fit@skip\tcbfitdim}\selectfont}
\def\tcb@setfontsize#1#2{\@setfontsize#1{#2\tcbfitdim}{#2\dimexpr\kvtcb@fit@skip\tcbfitdim}}
\long\def\tcbox@inner@fitbox@collected#1{%
\tcbox@inner@fitbox{#1}%
\tcb@finalize@environment%
}
\newcount\tcb@cur@hbadness
\def\tcbox@fitalgorithm@fontsize{%
\tcb@continuetrue%
\loop%
\tcbfitdim.5\tcbfitdim%
\tcb@fit@@box%
\ifnum\count@=\kvtcb@fit@maxstep\relax%
\tcb@continuefalse%
\else%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\ifdim\tcbfitdim<18000sp\relax%
\count@\kvtcb@fit@maxstep\relax%
\tcb@continuefalse%
\fi%
\else%
\tcb@continuefalse%
\fi%
\fi%
\iftcb@continue \repeat%
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\tcbdimto\tcb@fit@@gap{\tcb@fit@@target-\tcb@fit@@h}%
\tcb@lowerfitdim\tcbfitdim%
\tcb@upperfitdim2\tcbfitdim%
\tcbfitdim1.5\tcbfitdim%
\loop%
\tcb@fit@@box%
\tcb@continuetrue%
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\ifdim\dimexpr\tcb@upperfitdim-\tcb@lowerfitdim<\kvtcb@fit@maxfontdiff\relax%
\tcb@continuefalse%
\else%
\ifdim\dimexpr\tcb@upperfitdim-\tcb@lowerfitdim<\kvtcb@fit@maxfontdiffgap\relax%
\ifdim\dimexpr\tcb@fit@@gap<\tcb@fit@@line\relax%
\tcb@continuefalse%
\fi%
\fi%
\fi%
\else%
\tcb@continuefalse%
\fi%
\iftcb@continue%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcb@upperfitdim\tcbfitdim%
\advance\tcbfitdim\tcb@lowerfitdim%
\tcbfitdim0.5\tcbfitdim%
\else%
\tcbdimto\tcb@fit@@gap{\tcb@fit@@target-\tcb@fit@@h}%
\tcb@lowerfitdim\tcbfitdim%
\advance\tcbfitdim\tcb@upperfitdim%
\tcbfitdim0.5\tcbfitdim%
\fi%
\else%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcbfitdim\tcb@lowerfitdim%
\tcb@fit@@box%
\fi%
\fi%
\iftcb@continue \repeat%
\fi%
}
\def\tcbox@fitalgorithm@fontsize@star{%
\tcbox@fitalgorithm@fontsize%
\tcb@resize@box{\tcb@upperbox}{\tcb@w@upper}{\tcb@fit@@target}%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
}
\def\tcbox@fitalgorithm@areasize@core{%
\pgfmathdivide{\tcb@fit@@h}{\tcb@fit@@target}%
\pgfmathsqrt{\pgfmathresult}%
\let\tcb@temp=\pgfmathresult%
\tcbdimto\tcb@w@upper@temp{\pgfmathresult\dimexpr\tcb@w@upper}%
\tcb@fit@@boxsave{\tcb@w@upper@temp}%
%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
\pgfmathdivide{\tcb@fit@@h}{\tcb@fit@@target}%
\pgfmathdivide{\pgfmathresult}{\tcb@temp}%
\pgfmathsqrt{\pgfmathresult}%
\ifdim\dimexpr\pgfmathresult pt<0.98pt\relax
\tcbdimto\tcb@w@upper@temp{\pgfmathresult\dimexpr\tcb@w@upper@temp}%
\tcb@fit@@boxsave{\tcb@w@upper@temp}%
\else\ifdim\dimexpr\pgfmathresult pt>1.02pt\relax
\tcbdimto\tcb@w@upper@temp{\pgfmathresult\dimexpr\tcb@w@upper@temp}%
\tcb@fit@@boxsave{\tcb@w@upper@temp}%
\fi\fi%
%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
}
\def\tcbox@fitalgorithm@areasize{%
\tcbox@fitalgorithm@areasize@core%
\pgfmathdivide{\tcb@w@upper}{\tcb@w@upper@temp}%
\tcbdimto\tcb@fit@@h{\pgfmathresult\dimexpr\tcb@fit@@h}%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\let\tcb@fit@@h=\tcb@fit@@target%
\fi
\tcb@resize@box{\tcb@upperbox}{\tcb@w@upper}{\tcb@fit@@h}%
%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
}
\def\tcbox@fitalgorithm@areasize@star{%
\tcbox@fitalgorithm@areasize@core%
\tcb@resize@box{\tcb@upperbox}{\tcb@w@upper}{\tcb@fit@@target}%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
}
\def\tcbox@fitalgorithm@squeeze{%
\tcb@resize@box{\tcb@upperbox}{\tcb@w@upper}{\tcb@fit@@target}%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
}
\def\tcbox@fitalgorithm@hybrid@core{%
\pgfmathdivide{\tcb@fit@@target}{\tcb@fit@@h}%
\pgfmathsqrt{\pgfmathresult}%
\tcbfitdim=\pgfmathresult\tcbfitdim%
\tcb@fit@@box%
%
\pgfmathdivide{\tcb@fit@@target}{\tcb@fit@@h}%
\pgfmathsqrt{\pgfmathresult}%
\ifdim\dimexpr\pgfmathresult pt<0.85pt\relax
\tcbfitdim=\pgfmathresult\tcbfitdim%
\tcb@fit@@box%
\else\ifdim\dimexpr\pgfmathresult pt>1.15pt\relax
\tcbfitdim=\pgfmathresult\tcbfitdim%
\tcb@fit@@box%
\fi\fi%
}
\def\tcbox@fitalgorithm@hybrid{%
\tcbox@fitalgorithm@hybrid@core%
\tcbox@fitalgorithm@areasize%
}
\def\tcbox@fitalgorithm@hybrid@star{%
\tcbox@fitalgorithm@hybrid@core%
\tcbox@fitalgorithm@areasize@star%
}
\def\tcb@fit@@box{%
\iftcb@hasTitle%
\tcbdimto\tcb@w@title{\kvtcb@width-(\kvtcb@left@rule)-(\kvtcb@right@rule)-(\kvtcb@boxsep)*2-(\kvtcb@lefttitle)-(\kvtcb@righttitle)}%
\begin{tcb@savebox}{\tcb@titlebox}{\tcb@w@title}{tcbcoltitle}\kvtcb@fonttitle\kvtcb@haligntitle\tcb@insert@before@title\kvtcb@title\tcb@insert@after@title\end{tcb@savebox}%
\tcbdimto\tcb@h@titletotal{\ht\tcb@titlebox+\dp\tcb@titlebox+\kvtcb@title@rule+(\kvtcb@boxsep)*2+\kvtcb@toptitle+\kvtcb@bottomtitle}%
\else%
\let\tcb@h@titletotal=\tcb@zpt%
\fi%
\tcbdimto\tcb@fit@@line{\kvtcb@fit@skip\tcbfitdim}%
\tcbdimto\tcb@w@upper{\kvtcb@width-(\kvtcb@left@rule)-(\kvtcb@right@rule)-(\kvtcb@boxsep)*2-(\kvtcb@leftupper)-(\kvtcb@rightupper)}%
\tcb@fit@@boxsave{\tcb@w@upper}%
\tcbdimto\tcb@fit@@h{\ht\tcb@upperbox+\dp\tcb@upperbox}%
\tcbdimto\tcb@fit@@target{\kvtcb@height@fixed-(\kvtcb@top@rule@stand)-(\kvtcb@bottom@rule@stand)-(\kvtcb@top)-(\kvtcb@bottom)-(\kvtcb@boxsep)*2-\tcb@h@titletotal}%
}%
\long\def\tcbox@inner@fitbox#1{%
\let\tcb@space\tcb@zpt%
\let\tcb@val@raisebase=\tcb@zpt%
\unless\ifdefined\kvtcb@height@fixed%
\tcbset{height=\kvtcb@width}%
\fi%
\tcb@hasLowerfalse%
%
\count@\z@%
\tcbfitdim\kvtcb@fit@basedim%
\tcb@fit@warn@begin%
%
\def\tcb@fit@@boxsave##1{%
\tcbdimto\tcb@innerwidth{\kvtcb@width-\kvtcb@left@rule-\kvtcb@right@rule}%
\begin{tcb@savebox}{\tcb@upperbox}{##1}{tcbcolupper}%
\kvtcb@fontupper\fontsize{\tcbfitdim}{\tcb@fit@@line}\selectfont%
\kvtcb@halignupper\tcb@insert@before@upper#1\tcb@insert@after@upper%
\end{tcb@savebox}%
\advance\count@ 1\relax%
}%
%
\tcb@set@@phantom%
\tcb@set@@title%
\tcb@fit@@box%
%
% height fit
\ifdim\kvtcb@height@fixed@plus>0pt\relax%
\let\tcb@fit@@minheight=\kvtcb@height@fixed%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\ifdim\dimexpr\tcb@fit@@h>\dimexpr\tcb@fit@@target+\kvtcb@height@fixed@plus\relax%
\tcbdimto\kvtcb@height@fixed{\kvtcb@height@fixed+\kvtcb@height@fixed@plus}%
\tcbdimto\tcb@fit@@target{\tcb@fit@@target+\kvtcb@height@fixed@plus}%
\else%
\tcbdimto\kvtcb@height@fixed{\kvtcb@height@fixed+\tcb@fit@@h-\tcb@fit@@target}%
\let\tcb@fit@@target=\tcb@fit@@h%
\fi%
\fi%
\fi%
%
% width fit
\ifdim\kvtcb@fit@plus@width>0pt\relax%
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcb@lowerfitdim\dimexpr\kvtcb@width\relax%
\tcb@upperfitdim\dimexpr\kvtcb@width+\kvtcb@fit@plus@width\relax%
\tcbdimto\kvtcb@width{\tcb@upperfitdim}%
\tcb@fit@@box%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\else%
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\tcbdimto\tcb@fit@@gap{\tcb@fit@@target-\tcb@fit@@h}%
\tcbdimto\kvtcb@width{(\tcb@lowerfitdim+\tcb@upperfitdim)/2}%
\loop%
\tcb@fit@@box%
\tcb@continuetrue%
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\ifdim\dimexpr\tcb@upperfitdim-\tcb@lowerfitdim<\kvtcb@fit@maxwidthdiff\relax%
\tcb@continuefalse%
\else%
\ifdim\dimexpr\tcb@upperfitdim-\tcb@lowerfitdim<\kvtcb@fit@maxwidthdiffgap\relax%
\ifdim\dimexpr\tcb@fit@@gap<\tcb@fit@@line\relax%
\tcb@continuefalse%
\fi%
\fi%
\fi%
\else%
\tcb@continuefalse%
\fi%
\iftcb@continue%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcb@lowerfitdim\dimexpr\kvtcb@width\relax%
\tcbdimto\kvtcb@width{(\tcb@lowerfitdim+\tcb@upperfitdim)/2}%
\else%
\tcb@upperfitdim\dimexpr\kvtcb@width\relax%
\tcbdimto\tcb@fit@@gap{\tcb@fit@@target-\tcb@fit@@h}%
\tcbdimto\kvtcb@width{(\tcb@lowerfitdim+\tcb@upperfitdim)/2}%
\fi%
\else%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcbdimto\kvtcb@width{\tcb@upperfitdim}%
\tcb@fit@@box%
\fi%
\fi%
\iftcb@continue \repeat%
\fi%
\fi%
\fi%
\fi%
\fi%
%
% (font) fit
\ifnum\count@<\kvtcb@fit@maxstep\relax%
\ifdim\dimexpr\tcb@fit@@h>\tcb@fit@@target\relax%
\tcbox@fitalgorithm%
\fi%
\fi%
%
\tcb@fit@warn@end%
%
% last height fit
\ifdim\kvtcb@height@fixed@plus>0pt\relax%
\ifdim\dimexpr\tcb@fit@@h<\tcb@fit@@target\relax%
\tcbdimto\tcb@temp{\kvtcb@height@fixed+\tcb@fit@@h-\tcb@fit@@target}%
\ifdim\dimexpr\tcb@temp<\tcb@fit@@minheight\relax%
\else%
\let\kvtcb@height@fixed=\tcb@temp%
\fi%
\fi%
\fi%
%
\edef\tcbfitsteps{\the\count@}%
\tcb@set@@dimensions%
\tcb@draw@color@box%
}
\newcommand{\tcboxfit}[2][]{%
\tcb@ox{capture=fitbox,#1}{#2}%
}
\ExplSyntaxOn
\NewDocumentCommand \__tcobox_new_tcboxfit_ii:w { m +m m o +o +m }
{
\__tcobox_process_newtcolorbox:nn { #2 }{ #3 }
\tl_if_novalue:nTF { #4 }
{
\exp_args:Nc #1 { #3 }{ \tcboxfit[#6,options@for=#3] }
}
{
\tl_if_novalue:nTF { #5 }
{
\exp_args:Nc #1 { #3 }[ #4 ]{ \tcboxfit[#6,options@for=#3] }
}
{
\exp_args:Nc #1 { #3 }[ #4 ][ #5 ]{ \tcboxfit[#6,options@for=#3] }
}
}
}
\NewDocumentCommand \__tcobox_new_tcboxfit_i:w { m +O{} m }
{
\__tcobox_set_backslash_removed:Nn \l_tmpa_tl { #3 }
\exp_args:NNnV \__tcobox_new_tcboxfit_ii:w #1 {#2} \l_tmpa_tl
}
\NewDocumentCommand \newtcboxfit { }
{
\bool_set_true:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_tcboxfit_i:w \newcommand
}
\NewDocumentCommand \renewtcboxfit { }
{
\bool_set_false:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_tcboxfit_i:w \renewcommand
}
\cs_new:Npn \__tcobox_new_TCBoxFit:Nnnnn #1#2#3#4#5
{
\__tcobox_process_newtcolorbox:nn { #2 }{ #3 }
\exp_args:Nc #1 { #3 }{ #4 }{ \tcboxfit[#5,options@for=#3] }
}
\NewDocumentCommand \__tcobox_new_TCBoxFit:w { m +O{} m }
{
\__tcobox_set_backslash_removed:Nn \l_tmpa_tl { #3 }
\exp_args:NNnV \__tcobox_new_TCBoxFit:Nnnnn #1 {#2} \l_tmpa_tl
}
\NewDocumentCommand \DeclareTCBoxFit { }
{
\bool_set_false:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TCBoxFit:w \DeclareDocumentCommand
}
\NewDocumentCommand \NewTCBoxFit { }
{
\bool_set_true:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TCBoxFit:w \NewDocumentCommand
}
\NewDocumentCommand \RenewTCBoxFit { }
{
\bool_set_false:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TCBoxFit:w \RewewDocumentCommand
}
\NewDocumentCommand \ProvideTCBoxFit { }
{
\bool_set_true:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TCBoxFit:w \ProvideDocumentCommand
}
\cs_new:Npn \__tcobox_new_TotalTCBoxFit:Nnnnnn #1#2#3#4#5#6
{
\__tcobox_process_newtcolorbox:nn { #2 }{ #3 }
\exp_args:Nc #1 { #3 }{ #4 }{ \tcboxfit[#5,options@for=#3]{#6} }
}
\NewDocumentCommand \__tcobox_new_TotalTCBoxFit:w { m +O{} m }
{
\__tcobox_set_backslash_removed:Nn \l_tmpa_tl { #3 }
\exp_args:NNnV \__tcobox_new_TotalTCBoxFit:Nnnnnn #1 {#2} \l_tmpa_tl
}
\NewDocumentCommand \DeclareTotalTCBoxFit { }
{
\bool_set_false:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TotalTCBoxFit:w \DeclareDocumentCommand
}
\NewDocumentCommand \NewTotalTCBoxFit { }
{
\bool_set_true:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TotalTCBoxFit:w \NewDocumentCommand
}
\NewDocumentCommand \RenewTotalTCBoxFit { }
{
\bool_set_false:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TotalTCBoxFit:w \RewewDocumentCommand
}
\NewDocumentCommand \ProvideTotalTCBoxFit { }
{
\bool_set_true:N \l__tcobox_prevent_init_overwrite_bool
\__tcobox_new_TotalTCBoxFit:w \ProvideDocumentCommand
}
\ExplSyntaxOff
\tcbset{%
reset@fitting/.style={%
fit algorithm=fontsize,%
fit basedim=10pt,fit skip=1.2,
height plus=0pt,fit width plus=0pt,
fit maxstep=20,fit maxfontdiff=0.1pt,fit maxfontdiffgap=1pt,
fit maxwidthdiff=1pt,fit maxwidthdiffgap=10pt,
fit warning=off
},
initialize@reset=reset@fitting,
}