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% Copyright 2018 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{tikzlibrarymatrix.code.tex}
% A matrix of nodes contains a node in each cell.
\tikzset{matrix of nodes/.style={%
matrix,%
cells={anchor=base},%
execute at begin cell=\tikz@lib@matrix@start@cell,%
execute at end cell=\tikz@lib@matrix@end@cell,%
execute at empty cell=\tikz@lib@matrix@empty@cell,
execute at begin matrix=\iftikz@handle@active@code\tikz@orig@shorthands\fi,%
}}%
\def\tikz@lib@matrix@empty@cell{\iftikz@lib@matrix@empty\node[name=\tikzmatrixname-\the\pgfmatrixcurrentrow-\the\pgfmatrixcurrentcolumn]{};\fi}%
\newif\iftikz@lib@matrix@plain
\def\tikz@lib@matrix@start@cell{%
\pgfutil@ifnextchar|{\tikz@lib@matrix@with@options}{\tikz@lib@matrix@normal@start@cell}}%
\def\tikz@lib@matrix@with@options|#1|{\tikz@lib@matrix@plainfalse\node%
[name=\tikzmatrixname-\the\pgfmatrixcurrentrow-\the\pgfmatrixcurrentcolumn]#1\bgroup\tikz@lib@matrix@startup}%
\def\tikz@lib@matrix@normal@start@cell{\pgfutil@ifnextchar\let{\tikz@lib@matrix@check}{\tikz@lib@matrix@plainfalse\node
[name=\tikzmatrixname-\the\pgfmatrixcurrentrow-\the\pgfmatrixcurrentcolumn]\bgroup\tikz@lib@matrix@startup}}%
\def\tikz@lib@matrix@check#1{% evil hackery to find out about start of path
\pgfutil@ifnextchar\tikz@signal@path{\tikz@lib@matrix@plaintrue\let}{\tikz@lib@matrix@plainfalse\node
[name=\tikzmatrixname-\the\pgfmatrixcurrentrow-\the\pgfmatrixcurrentcolumn]\bgroup\tikz@lib@matrix@startup\let}%
}%
\def\tikz@lib@matrix@end@cell{%
\iftikz@lib@matrix@plain%
\else%
\expandafter\egroup\expandafter;%
\fi%
}%
\def\tikz@lib@matrix@startup{%
\pgfutil@ifnextchar\bgroup{%
% Save meaning of \\:
\let\tikz@lib@matrix@saved@eol=\\%
% Now smuggle meaning inside following group.
\let\\=\pgfmatrixendrow%
\afterassignment\tikz@lib@matrix@smuggle%
\let\tikz@next}
{\let\\=\pgfmatrixendrow}%
}%
\def\tikz@lib@matrix@smuggle{%
\bgroup%
\let\\=\tikz@lib@matrix@saved@eol%
}%
% Fill empty nodes in a matrix of nodes
\newif\iftikz@lib@matrix@empty
\tikzoption{nodes in empty cells}[true]{\csname tikz@lib@matrix@empty#1\endcsname}%
% Same as a matrix of nodes, but switch on math mode in each cell
\tikzset{matrix of math nodes/.style={%
matrix of nodes,
nodes={%
execute at begin node=$,%
execute at end node=$%
}%
}}%
% Provide a delimiter
\tikzoption{left delimiter}{\tikzset{append after command={\tikz@delimiter%
{south east}%
{south west}%
{every delimiter,every left delimiter}%
{south}%
{north}%
{#1}%
{.}%
{\pgf@y}}}}%
\tikzoption{right delimiter}{\tikzset{append after command={\tikz@delimiter%
{south west}%
{south east}%
{every delimiter,every right delimiter}%
{south}%
{north}%
{.}%
{#1}%
{\pgf@y}}}}%
\tikzoption{above delimiter}{\tikzset{append after command={\tikz@delimiter%
{south east}%
{north west}%
{every delimiter,every above delimiter,rotate=-90}%
{west}%
{east}%
{#1}%
{.}%
{\pgf@x}}}}%
\tikzoption{below delimiter}{\tikzset{append after command={\tikz@delimiter%
{south west}%
{south west}%
{every delimiter,every below delimiter,rotate=-90}%
{west}%
{east}%
{.}%
{#1}%
{\pgf@x}}}}%
\def\tikz@delimiter#1#2#3#4#5#6#7#8{%
\bgroup
\pgfextra{\let\tikz@save@last@fig@name=\tikz@last@fig@name}%
node[outer sep=0pt,inner sep=0pt,draw=none,fill=none,anchor=#1,at=(\tikz@last@fig@name.#2),#3]
{%
{\nullfont\pgf@process{\pgfpointdiff{\pgfpointanchor{\tikz@last@fig@name}{#4}}{\pgfpointanchor{\tikz@last@fig@name}{#5}}}}%
$\left#6\vcenter{\hrule height .5#8 depth .5#8 width0pt}\right#7$%
}
\pgfextra{\global\let\tikz@last@fig@name=\tikz@save@last@fig@name}%
\egroup%
}%
\tikzset{every delimiter/.style={}}%
\tikzset{every left delimiter/.style={}}%
\tikzset{every right delimiter/.style={}}%
\tikzset{every above delimiter/.style={}}%
\tikzset{every below delimiter/.style={}}%
\endinput
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