%
% lltjext.sty: derived from plext.sty in pLaTeX.
%

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{lltjext}[2015/09/18 v1.2-ltj-4 Macros for vertical writing]
\RequirePackage{luatexja}

\let\ltj@lltjext@orig@tabular=\tabular
\let\ltj@lltjext@orig@array=\array

%%% array and tabular
\def\array{\let\@acol\@arrayacol \let\@classz\@arrayclassz
 \let\@classiv\@arrayclassiv
 \let\\\@arraycr\let\@halignto\@empty\X@tabarray}
\def\tabular{\let\@halignto\@empty\X@tabular}
\@namedef{tabular*}{\@ifnextchar<%>
   {\@stabular}{\@stabular<Z>}}
\def\X@tabarray{\@ifnextchar<%>
   {\p@tabarray}{\p@tabarray<Z>}}
\def\X@tabular{\@ifnextchar<%>
   {\p@tabular}{\p@tabular<Z>}}
\def\@stabular<#1>#2{\def\@halignto{to#2}\p@tabular<#1>}
\def\p@tabular<#1>{\leavevmode \hbox \bgroup 
   \count@=\ltjgetparameter{direction}$\let\@acol\@tabacol
   \let\@classz\@tabclassz
   \let\@classiv\@tabclassiv \let\\\@tabularcr\p@tabarray<#1>}
\def\p@tabarray<#1>{\m@th\@ifnextchar[%]
   {\p@array<#1>}{\p@array<#1>[c]}}

\def\p@array<#1>[#2]#3{%
  \let\box@dir\relax
  \if #1z\relax
    \ifnum\ltjgetparameter{direction}=3\relax
      \let\box@dir\utod\@tempcnta=\zstrutbox
    \fi
  \else
    \if #1y\relax
       \let\box@dir\yoko\@tempcnta=\strutbox
    \else\if #1t\relax
       \let\box@dir\tate\@tempcnta=\tstrutbox
    \else\if #1d\relax
       \let\box@dir\dtou\@tempcnta=\dstrutbox
    \else\if #1u\relax
       \let\box@dir\utod\@tempcnta=\zstrutbox
    \fi\fi\fi\fi
  \fi
  \ifx\box@dir\relax
    \ifcase\count@
       \or   \let\box@dir\dtou\@tempcnta=\dstrutbox% dtou
       \or\or\let\box@dir\tate\@tempcnta=\tstrutbox% tate
       \or   \let\box@dir\yoko\@tempcnta=\strutbox% yoko
       \else \let\box@dir\utod\@tempcnta=\zstrutbox% utod
    \fi
  \fi
  \setbox\@arstrutbox\hbox{%
    \box@dir
    \vrule\@height\arraystretch\ltjgetht\@tempcnta
          \@depth\arraystretch\ltjgetdp\@tempcnta \@width\z@}%
  \fork@array@option<#1>[#2]%
  \@mkpream{#3}\edef\@preamble{\ialign \noexpand\@halignto
  \bgroup\@arstrut \@preamble \tabskip\z@skip \cr}%
   \let\tabularnewline\\%
  \@begin@alignbox\bgroup\box@dir\adjustbaseline
    \let\par\@empty
    \let\@sharp##\let\protect\relax
    \lineskip\z@skip\baselineskip\z@skip\@preamble}
\def\endarray{\crcr\egroup\egroup\@end@alignbox}
\def\endtabular{\endarray$\egroup}
\expandafter \let \csname endtabular*\endcsname = \endtabular
\def\fork@array@option<#1>[#2]{%
\ifnum\ltjgetparameter{direction}=4 % yoko
  \ifx\box@dir\yoko
    \if #2t\relax
       \let\@begin@alignbox\vtop
       \let\@end@alignbox\relax
    \else\if #2b\relax
       \let\@begin@alignbox\vbox
       \let\@end@alignbox\relax
    \else
       \let\@begin@alignbox\vcenter
       \let\@end@alignbox\relax
    \fi\fi
  \else
    \if #2t\relax
       \def\@begin@alignbox{\vtop\bgroup\kern\z@\vbox}%
       \def\@end@alignbox{\egroup}%
    \else\if #2b\relax
       \let\@begin@alignbox\vbox
       \let\@end@alignbox\relax
    \else
       \let\@begin@alignbox\vcenter
       \let\@end@alignbox\relax
    \fi\fi
  \fi
\else\ifnum\ltjgetparameter{direction}=1 % dtou
  \ifx\box@dir\yoko
    \if #2t\relax
       \def\@begin@alignbox{\vtop\bgroup\kern\z@\vbox}%
       \def\@end@alignbox{\egroup}%
    \else\if #2b\relax
       \let\@begin@alignbox\vbox
       \let\@end@alignbox\relax
    \else
      \let\@begin@alignbox\vcenter
        \let\@end@alignbox\relax
    \fi\fi
  \else\ifx\box@dir\dtou
    \if #2t\relax
       \let\@begin@alignbox\vtop
       \let\@end@alignbox\relax
    \else\if #2b\relax
       \let\@begin@alignbox\vbox
       \let\@end@alignbox\relax
    \else
       \let\@begin@alignbox\vcenter
       \let\@end@alignbox\relax
    \fi\fi
  \else % 180 度回転→vtop, vbox を入れ替える
    \if #2t\relax
       \let\@begin@alignbox\vbox %%% !!!
       \let\@end@alignbox\relax
    \else\if #2b\relax
       \let\@begin@alignbox\vtop %%% !!!
       \let\@end@alignbox\relax
    \else
       \let\@begin@alignbox\vcenter
       \let\@end@alignbox\relax
    \fi\fi
  \fi\fi
\else % tate, utod
  \ifx\box@dir\yoko
    \if #2t\relax
      \def\@begin@alignbox{\vtop\bgroup\kern\z@\vbox}%
      \def\@end@alignbox{\egroup}%
    \else\if #2b\relax
      \def\@begin@alignbox{\vbox\bgroup\vbox}%
      \def\@end@alignbox{\kern\z@\egroup}%
    \else
      \let\@begin@alignbox\vcenter
      \let\@end@alignbox\relax
    \fi\fi
  \else\ifx\box@dir\dtou % 180 度回転→vtop, vbox を入れ替える
    \if #2t\relax
      \let\@begin@alignbox\vbox %%% !!!
      \let\@end@alignbox\relax
    \else\if #2b\relax
      \let\@begin@alignbox\vtop %%% !!!
      \let\@end@alignbox\relax
    \else
      \let\@begin@alignbox\vcenter
      \let\@end@alignbox\relax
    \fi\fi
  \else
    \if #2t\relax
       \let\@begin@alignbox\vtop
       \let\@end@alignbox\relax
    \else\if #2b\relax
       \let\@begin@alignbox\vbox
       \let\@end@alignbox\relax
    \else
       \let\@begin@alignbox\vcenter
       \let\@end@alignbox\relax
    \fi\fi
  \fi\fi
\fi\fi%
}

%%% caption
\newbox\@floatbox
\newdimen\floatwidth
\newdimen\floatheight
\newdimen\floatruletick \floatruletick=0.4pt
\newdimen\captionfloatsep \captionfloatsep=10pt
\def\caption@dir{Z}
\let\captiondir\relax
\newdimen\captionwidth \captionwidth\z@
\def\caption@posa{Z}
\def\caption@posb{Z}
\newbox\@captionbox
\def\captionfontsetup{\normalfont\normalsize}
\def\layoutfloat{\@ifnextchar(%)
   {\X@layoutfloat}{\X@layoutfloat(-5\p@,-5\p@)}}
\def\X@layoutfloat(#1,#2){\@ifnextchar[%]
   {\@layoutfloat(#1,#2)}{\@layoutfloat(#1,#2)[c]}}
\long\def\@layoutfloat(#1,#2)[#3]#4{%
  \setbox\z@\hbox{#4}%
  \floatwidth=#1 \floatheight=#2 \edef\float@pos{#3}%
  \ifdim\floatwidth<\z@
     \floatwidth\ltjgetwd\z@\floatruletick\z@
  \fi
  \ifdim\floatheight<\z@
     \floatheight\ltjgetht\z@\advance\floatheight\ltjgetdp\z@\relax
     \floatruletick\z@
  \fi
  \setbox\@floatbox\vbox to\floatheight{\offinterlineskip
    \hrule width\floatwidth height\floatruletick depth\z@
    \vss\hbox to\floatwidth{%
      \vrule width\floatruletick height\floatheight depth\z@
      \hss\vbox to\floatheight{\hsize\floatwidth\vss#4\vss}\hss
      \vrule width\floatruletick height\floatheight depth\z@
    }\hrule width\floatwidth height\floatruletick depth\z@}}
\def\DeclareLayoutCaption#1<#2>(#3)[#4#5]{%
  \expandafter
  \ifx\csname #1@layoutcaption\endcsname\relax \else
    \@latex@info{Redeclaring capiton layout setting of '#1'}%
  \fi
  \expandafter
  \gdef\csname #1@layoutcaption\endcsname{%
     \if Z\caption@dir\def\caption@dir{#2}\fi
     \ifdim\captionwidth=\z@ \captionwidth=#3\relax\fi
     \if Z\caption@posa\def\caption@posa{#4}\fi
     \if Z\caption@posb\def\caption@posb{#5}\fi}}
\@onlypreamble\DeclareLayoutCaption
\DeclareLayoutCaption{figure}<y>(.8\linewidth)[cd]
\DeclareLayoutCaption{table}<y>(.8\linewidth)[cu]
\def\layoutcaption{\def\caption@dir{Z}\captionwidth\z@
  \def\caption@posa{Z}\def\caption@posb{Z}%
  \@ifnextchar<\X@layoutcaption{%
    \@ifnextchar(\@ilayoutcaption{%
      \@ifnextchar[\@iilayoutcaption\relax}}}
\def\X@layoutcaption<#1>{\def\caption@dir{#1}%
  \@ifnextchar(\@ilayoutcaption{%
    \@ifnextchar[\@iilayoutcaption\relax}}
\def\@ilayoutcaption(#1){\setlength\captionwidth{#1}%
  \@ifnextchar[{\@iilayoutcaption}{\relax}}
\def\@iilayoutcaption[#1#2]{%
  \def\caption@posa{#1}\def\caption@posb{#2}}
\def\pcaption{\refstepcounter\@captype \@dblarg{\@pcaption\@captype}}
\long\def\@pcaption#1[#2]#3{%
  \addcontentsline{\csname ext@#1\endcsname}{#1}{%
    \protect\numberline{\csname the#1\endcsname}{\ignorespaces#2}}%
  \ifvoid\@floatbox
     \latex@error{Use with `\protect\layoutfloat'.}\@eha
  \fi
  \make@pcaptionbox{#3}%
  \@pboxswfalse
  \setbox\@tempboxa\vbox{\hbox to\hsize{\if l\float@pos\else\hss\fi
    \if l\caption@posb\box\@captionbox\kern\captionfloatsep\fi
    \if t\caption@posa\vtop
    \else\if b\caption@posa\vbox
    \else\ifmmode\vcenter \else\@pboxswtrue $\vcenter \fi\fi\fi
    {\if u\caption@posb\box\@captionbox\kern\captionfloatsep\fi
     \unvbox\@floatbox
     \if d\caption@posb\kern\captionfloatsep\box\@captionbox\fi}%
    \if r\caption@posb\kern\captionfloatsep\box\@captionbox\fi
    \if@pboxsw \m@th$\fi \if r\float@pos\else\hss\fi}}%
  \par\vskip.25\baselineskip
  \box\@tempboxa}
\def\make@pcaptionbox#1{%
  \expandafter
  \ifx\csname\@captype @layoutcaption\endcsname\relax
     \@latex@warning{Default caption layout of `\@captype' unknown.}%
       \def\caption@dir{Z}\captionwidth\z@
       \def\caption@posa{Z}\def\caption@posb{Z}%
  \else
     \csname \@captype @layoutcaption\endcsname
  \fi
  \@tempswafalse
  % tempswa\hline 基本組の組方向とキャプションの組方向が直交するか？
  \if y\caption@dir \let\captiondir\yoko
    \ifodd\ltjgetparameter{direction}\relax\@tempswatrue\fi
  \else\if z\caption@dir \let\captiondir\relax
    \ifnum\ltjgetparameter{direction}=3\relax\let\captiondir\utod\fi
  \else\if d\caption@dir \let\captiondir\dtou
    \ifodd\ltjgetparameter{direction}\else\@tempswatrue\fi
  \else\if u\caption@dir \let\captiondir\utod
    \ifodd\ltjgetparameter{direction}\else\@tempswatrue\fi
  \else\if t\caption@dir \let\captiondir\tate
    \ifodd\ltjgetparameter{direction}\else\@tempswatrue\fi
  \fi\fi\fi\fi\fi
  \setbox0\hbox{\hbox{\captiondir
     \captionfontsetup\parindent\z@\inhibitglue
     \csname fnum@\@captype\endcsname 　#1}}%"
  \if@tempswa\@tempdima\ltjgetht0\relax\else\@tempdima\ltjgetwd0\relax\fi
  \ifdim\@tempdima>\captionwidth \@tempdima\captionwidth \fi
  \@pboxswfalse
  \setbox0\hbox{%
    \if u\caption@posb\vbox
    \else\if d\caption@posb\vbox
    \else\if t\caption@posa\vtop
    \else\if b\caption@posa\vbox
    \else\ifmmode\vcenter\else\@pboxswtrue $\vcenter\fi
    \fi\fi\fi\fi
    {\hsize\@tempdima\kern\z@
    \vbox{\captiondir\hsize\@tempdima
      \captionfontsetup\parindent\z@\inhibitglue
      \csname fnum@\@captype\endcsname 　#1}\kern\z@
    }\if@pboxsw \m@th$\fi}%
  \let\to@captionboxwidth\relax
  \if l\caption@posb \else\if r\caption@posb\else
  \def\to@captionboxwidth{to\floatwidth}\fi\fi
  \setbox\@captionbox\hbox\to@captionboxwidth{%
     \if t\caption@posa\else\hss\fi
     \unhbox0\relax
     \if b\caption@posa\else\hss\fi}}

%%% minipage and parbox
\def\minipage{\@ifnextchar<%>
   {\X@minipage}{\X@minipage<Z>}}
\def\X@minipage<#1>{\@ifnextchar[%]
   {\@iminipage<#1>}{\@iiiminipage<#1>{c}\@empty[s]}}
\def\@iminipage<#1>[#2]{\@ifnextchar[%]
   {\@iiminipage<#1>{#2}}{\@iiiminipage<#1>{#2}\@empty[s]}}
\def\@iiminipage<#1>#2[#3]{\@ifnextchar[%]
   {\@iiiminipage<#1>{#2}{#3}}{\@iiiminipage<#1>{#2}{#3}[#2]}}
\def\@iiiminipage<#1>#2#3[#4]#5{%
  \leavevmode\bgroup
  \setlength\@tempdima{#5}%
  \def\@mpargs{<#1>{#2}{#3}[#4]{#5}}%
  \let\box@dir\relax
  \if #1z\relax
    \ifnum\ltjgetparameter{direction}=3\relax
      \let\box@dir\utod
    \fi
  \else
    \if #1y\relax     \let\box@dir\yoko
    \else\if #1t\relax\let\box@dir\tate
    \else\if #1d\relax\let\box@dir\dtou
    \else\if #1u\relax\let\box@dir\utod
    \fi\fi\fi\fi
  \fi
  \ifx\box@dir\relax
    \ifcase\ltjgetparameter{direction}\relax
       \or   \let\box@dir\dtou
       \or\or\let\box@dir\tate
       \or   \let\box@dir\yoko
       \else \let\box@dir\utod
    \fi
  \fi
  \setbox\@tempboxa\vbox\bgroup\box@dir
    \adjustbaseline
    \color@begingroup
      \hsize\@tempdima
      \textwidth\hsize \columnwidth\hsize
      \@parboxrestore
      \def\@mpfn{mpfootnote}\def\thempfn{\thempfootnote}%
      \c@mpfootnote\z@
      \let\@footnotetext\@mpfootnotetext
      \let\@listdepth\@mplistdepth \@mplistdepth\z@
      \@minipagerestore
      \global\@minipagetrue %% \global added 24 May 89
      \everypar{\global\@minipagefalse\everypar{}}}
\def\endminipage{%
    \par
    \unskip
    \ifvoid\@mpfootins\else
      \vskip\skip\@mpfootins
      \normalcolor
      \footnoterule
      \unvbox\@mpfootins
    \fi
    \global\@minipagefalse   %% added 24 May 89
  \color@endgroup
  \egroup
  \expandafter\@iiiparbox\@mpargs{\unvbox\@tempboxa}\egroup}
\def\parbox{\@ifnextchar<%>
   {\X@parbox}{\X@parbox<Z>}}
\def\X@parbox<#1>{\@ifnextchar[%]
   {\@iparbox<#1>}{\@iiiparbox<#1>{c}\@empty[s]}}
\def\@iparbox<#1>[#2]{\@ifnextchar[%]
   {\@iiparbox<#1>{#2}}{\@iiiparbox<#1>{#2}\@empty[s]}}
\def\@iiparbox<#1>#2[#3]{\@ifnextchar[%]%
   {\@iiiparbox<#1>{#2}{#3}}{\@iiiparbox<#1>{#2}{#3}[#2]}}
\long\def\@iiiparbox<#1>#2#3[#4]#5#6{%
  \leavevmode\bgroup
  \setlength\@tempdima{#5}%
  \fork@parbox@option<#1>[#2]%
  \@begin@tempboxa\vbox{\box@dir
    \hsize\@tempdima\@parboxrestore\adjustbaseline#6\endgraf}%
    \ifx\@empty#3\relax\else
      \setlength\@tempdimb{#3}%
      \def\@parboxto{to\@tempdimb}%
    \fi
    \@begin@parbox\@parboxto{\box@dir\adjustbaseline
       \let\hss\vss\let\unhbox\unvbox
       \csname bm@#4\endcsname}\@end@parbox
  \@end@tempboxa\egroup}
\def\fork@parbox@option<#1>[#2]{%
  \let\box@dir\relax
  \if #1z\relax
    \ifnum\ltjgetparameter{direction}=3\relax
      \let\box@dir\utod
    \fi
  \else
    \if #1y\relax     \let\box@dir\yoko
    \else\if #1t\relax\let\box@dir\tate
    \else\if #1d\relax\let\box@dir\dtou
    \else\if #1u\relax\let\box@dir\utod
    \fi\fi\fi\fi
  \fi
  \ifx\box@dir\relax
    \ifcase\ltjgetparameter{direction}\relax
       \or   \let\box@dir\dtou
       \or\or\let\box@dir\tate
       \or   \let\box@dir\yoko
       \else \let\box@dir\utod
    \fi
  \fi
%%% now almost same as \fork@array@option
\ifnum\ltjgetparameter{direction}=4 % yoko
  \ifx\box@dir\yoko
    \if #2t\relax
       \let\@begin@parbox\vtop
       \let\@end@parbox\relax
    \else\if #2b\relax
       \let\@begin@parbox\vbox
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \else
    \if #2t\relax
       \def\@begin@parbox{\vtop\bgroup\kern\z@\vbox}%
       \def\@end@parbox{\egroup}%
    \else\if #2b\relax
       \let\@begin@parbox\vbox
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \fi
\else\ifnum\ltjgetparameter{direction}=1 % dtou
  \ifx\box@dir\yoko
    \if #2t\relax
       \def\@begin@parbox{\vtop\bgroup\kern\z@\vbox}
       \def\@end@parbox{\egroup}
    \else\if #2b\relax
       \let\@begin@parbox\vbox
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \else\ifx\box@dir\dtou
    \if #2t\relax
       \let\@begin@parbox\vtop
       \let\@end@parbox\relax
    \else\if #2b\relax
       \let\@begin@parbox\vbox
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \else % 180 度回転→vtop, vbox を入れ替える
    \if #2t\relax
       \let\@begin@parbox\vbox %%% !!!
       \let\@end@parbox\relax
    \else\if #2b\relax
       \let\@begin@parbox\vtop %%% !!!
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \fi\fi
\else % tate, utod
  \ifx\box@dir\yoko
    \if #2t\relax
      \def\@begin@parbox{\vtop\bgroup\kern\z@\vbox}%
      \def\@end@parbox{\egroup}%
    \else\if #2b\relax
      \def\@begin@parbox{\vbox\bgroup\vbox}%
      \def\@end@parbox{\kern\z@\egroup}%
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \else\ifx\box@dir\dtou % 180 度回転→vtop, vbox を入れ替える
    \if #2t\relax
      \let\@begin@parbox\vbox %%% !!!
      \let\@end@parbox\relax
    \else\if #2b\relax
      \let\@begin@parbox\vtop %%% !!!
      \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \else
    \if #2t\relax
       \let\@begin@parbox\vtop
       \let\@end@parbox\relax
    \else\if #2b\relax
       \let\@begin@parbox\vbox
       \let\@end@parbox\relax
    \else
      \def\@begin@parbox{$\vcenter}%
      \def\@end@parbox{\m@th$}%
    \fi\fi
  \fi\fi
\fi\fi%
}

%%% pbox
\def\pbox{\leavevmode\@ifnextchar<{\X@makePbox}{\X@makePbox<Z>}}
\def\X@makePbox<#1>{%
  \@ifnextchar[{\@imakePbox<#1>}{\@imakePbox<#1>[-5\p@]}}
\def\@imakePbox<#1>[#2]{\@ifnextchar[%]
  {\@iimakePbox<#1>{#2}}{\@iimakePbox<#1>{#2}[c]}}
\def\@iimakePbox<#1>#2[#3]#4{%
  \bgroup\let\box@dir\relax
  \if #1z\relax
    \ifnum\ltjgetparameter{direction}=3 \relax
      \let\box@dir\utod
    \fi
  \else
    \if #1y\relax     \let\box@dir\yoko
    \else\if #1t\relax\let\box@dir\tate
    \else\if #1d\relax\let\box@dir\dtou
    \else\if #1u\relax\let\box@dir\utod
    \fi\fi\fi\fi
  \fi
  \ifx\box@dir\relax
    \ifcase\ltjgetparameter{direction}
       \or   \let\box@dir\dtou
       \or\or\let\box@dir\tate
       \or   \let\box@dir\yoko
       \else \let\box@dir\utod
    \fi
  \fi
    \ifdim #2 <\z@ \hbox{\box@dir#4}\else
    \hbox to#2{\box@dir
               \if #3l\relax\else\hss\fi
               #4\relax
               \if #3r\relax\else\hss\fi}\fi\egroup}

%%% picture
\def\picture{\@ifnextchar<%>
   {\X@picture}{\X@picture<Z>}}
\def\X@picture<#1>(#2,#3){\@ifnextchar(%)
   {\@@picture<#1>(#2,#3)}{\@@picture<#1>(#2,#3)(0,0)}}
\newdimen\@picwd
\def\ltj@@pic@reset@blshift{%
  \ltj@yablshift\z@\ltj@ykblshift\z@
  \ltj@tablshift\z@\ltj@tkblshift\z@
}%
\def\@@picture<#1>(#2,#3)(#4,#5){%
  \edef\ltj@@pic@save@blshift{%
    \noexpand\ltj@yablshift\the\ltj@yablshift\noexpand\relax
    \noexpand\ltj@ykblshift\the\ltj@ykblshift\noexpand\relax
    \noexpand\ltj@tablshift\the\ltj@tablshift\noexpand\relax
    \noexpand\ltj@tkblshift\the\ltj@tkblshift\noexpand\relax
  }%
  \bgroup\let\box@dir\relax
  \if #1z\relax
    \ifnum\ltjgetparameter{direction}=3 \relax
      \let\box@dir\utod
    \fi
  \else
    \if #1y\relax     \let\box@dir\yoko
    \else\if #1t\relax\let\box@dir\tate
    \else\if #1d\relax\let\box@dir\dtou
    \else\if #1u\relax\let\box@dir\utod
    \fi\fi\fi\fi
  \fi
  \ifx\box@dir\relax
    \ifcase\ltjgetparameter{direction}
       \or   \let\box@dir\dtou
       \or\or\let\box@dir\tate
       \or   \let\box@dir\yoko
       \else \let\box@dir\utod
    \fi
  \fi
  \@picwd=#2\unitlength \@picht=#3\unitlength
  \setbox\@picbox\hbox to\@picwd\bgroup\box@dir
  \hskip-#4\unitlength\lower#5\unitlength\hbox\bgroup
  \ltj@@pic@reset@blshift
  \ignorespaces}
\def\endpicture{%
  \egroup\hss\egroup
  \setbox0=\hbox{\box@dir%
    \ltjsetht\@picbox\@picht \ltjsetdp\@picbox\z@
  }%
  \@tempswafalse
  \ifnum\ltjgetparameter{direction}=3  \@tempswatrue\fi
  \ifnum\ltjgetparameter{direction}=11  \@tempswatrue\fi
  \if@tempswa
    \ifx\box@dir\yoko % この場合だけ垂直位置補正が必要
     \ltjsetht\@picbox\dimexpr\ltjgetht\@picbox+\ltjgetdp\@picbox\relax
      \ltjsetdp\@picbox\z@
    \fi
  \fi
  \mbox{\box\@picbox}%
  \egroup\ltj@@pic@save@blshift}
\let\org@put\put
\def\put{\ltj@@pic@reset@blshift\org@put}
\let\org@line\line
\def\line{\ltj@@pic@reset@blshift\org@line}
\let\org@vector\vector
\def\vector{\ltj@@pic@reset@blshift\org@vector}
\let\org@dashbox\dashbox
\def\dashbox{\ltj@@pic@reset@blshift\org@dashbox}
\let\org@oval\oval
\def\oval{\ltj@@pic@reset@blshift\org@oval}
\let\org@circle\circle
\def\circle{\ltj@@pic@reset@blshift\org@circle}

%%% rensuji
\newif\ifnot@advanceline
\newskip\rensujiskip
\rensujiskip=0.25\chs plus.25\zw minus.25\zw
\DeclareRobustCommand\rensuji{%
  \@ifstar{\not@advancelinetrue\@rensuji}{\@rensuji}}
\def\@rensuji{\@ifnextchar[{\@@rensuji}{\@@rensuji[c]}}
\def\@@rensuji[#1]#2{\ifnum\ltjgetparameter{direction}=4\relax%
  \hbox{#2}\else
  \hskip\rensujiskip
  \ifvmode\leavevmode\fi
  \setbox\tw@\hbox{漢}% 「あ」では仮名書体使用時がまずそう
  \@tempdimb\ltjgetht\tw@ \advance\@tempdimb\ltjgetdp\tw@
  \ifnot@advanceline\not@advancelinefalse\else
    \setbox\z@\hbox{\yoko#2}%
    \@tempdima\ltjgetht\z@ \advance\@tempdima\ltjgetdp\z@
    \ifnum\ltjgetparameter{direction}=1\relax
      % 周囲が dtou の場合には，高さ \ltjgetht\tw@, 深さ \ltjgetdp\tw@ のボックスを基準としている．
      \if #1c\relax\vrule \@width \z@ \@height\dimexpr.5\@tempdima+.5\ltjgetht\tw@-.5\ltjgetdp\tw@
                          \@depth\dimexpr.5\@tempdima-.5\ltjgetht\tw@+.5\ltjgetdp\tw@
      \else\if #1l\relax\vrule\@width \z@\@height\ltjgetht\tw@ \@depth\dimexpr\@tempdima-\ltjgetht\tw@
      \else\vrule\@width \z@ \@height\dimexpr\@tempdima-\ltjgetdp\tw@ \@depth\ltjgetdp\tw@
      \fi\fi
    \else
      % 周囲が tate, utod の場合も同じ
      \if #1c\relax\vrule \@width \z@ \@height\dimexpr.5\@tempdima+.5\ltjgetht\tw@-.5\ltjgetdp\tw@
                          \@depth\dimexpr.5\@tempdima-.5\ltjgetht\tw@+.5\ltjgetdp\tw@
      \else\if #1r\relax\vrule\@width \z@\@height\ltjgetht\tw@ \@depth\dimexpr\@tempdima-\ltjgetht\tw@
      \else\vrule\@width \z@ \@height\dimexpr\@tempdima-\ltjgetdp\tw@ \@depth\ltjgetdp\tw@
      \fi\fi
    \fi
  \fi
  \ifnum\ltjgetparameter{direction}=1\relax
    \if #1c\relax\hbox to\@tempdimb{\yoko\hss#2\hss\kern-\ltjgetdp\tw@}%
    \else\if #1r\relax\vbox{\hbox to\@tempdimb{\yoko\hss#2\kern-\ltjgetdp\tw@}}%
    \else\lower\ltjgetdp\tw@\vtop{\hbox to\@tempdimb{\yoko#2\hss}}%
    \fi\fi
  \else
    \if #1c\relax\raise\dimexpr.5\@tempdimb-\ltjgetdp\tw@
        \hbox to\@tempdimb{\yoko \hss#2\hss}%
    \else\if #1r\relax\raise\dimexpr.5\@tempdimb-\ltjgetdp\tw@
        \vbox{\hbox to\@tempdimb{\yoko\hss#2}}%
    \else\raise\dimexpr.5\@tempdimb-\ltjgetdp\tw@
         \vtop{\hbox to\@tempdimb{\yoko #2\hss}}%
    \fi\fi
  \fi
  \hskip\rensujiskip
\fi}
\let\Rensuji\rensuji
\let\prensuji\rensuji

%%% kanji
\def\Kanji#1{\expandafter\@Kanji\csname c@#1\endcsname}
\def\@Kanji#1{\expandafter\kansuji\number #1}
\def\kanji{\ifnum\ltjgetparameter{direction}=3 \expandafter\kansuji\fi}

%%% bou
%%%
\def\boutenchar{\char\euc"A1A2}%"
\def\bou#1{\ifvmode\leavevmode\fi\@bou#1\end}
\def\@bou#1{%
  \ifx#1\end \let\next=\relax
  \else
    \ifnum\ltjgetparameter{direction}=3\relax
      \hbox to\z@{\vbox to\z@{\boxmaxdepth\maxdimen
        \vss\moveleft0.2\zw\hbox{\yoko\boutenchar}\nointerlineskip
        \hbox{\char\euc"A1A1}}\hss}\nobreak#1\relax
    \else
      \hbox to\z@{\vbox to\z@{\boxmaxdepth\maxdimen
        \vss\moveleft-0.2\zw\hbox{\boutenchar}\nointerlineskip
        \hbox{\char\euc"A1A1}}\hss}\nobreak#1\relax
    \fi
    \let\next=\@bou
  \fi\next}

%%% kasen
\def\kasen#1{%
  \ifnum\ltjgetparameter{direction}=3\relax
    \setbox\z@\hbox{#1}\leavevmode\raise.7\zw
    \hbox to\z@{\vrule\@width\wd\z@ \@depth\z@ \@height.4\p@\hss}%
    \box\z@
  \else\underline{#1}\fi}

%%% references
\def\@eqnnum{{\reset@font\rmfamily \normalcolor
  \ifnum\ltjgetparameter{direction}=3 \raise.25\zh\hbox{\yoko(\theequation)}%
  \else (\theequation)\fi}}
\def\@thecounter#1{\noexpand\rensuji{\noexpand\arabic{#1}}}
\def\@thmcounter#1{\noexpand\rensuji{\noexpand\arabic{#1}}}

%% Compatibility with array package

\def\ltj@lltjext@patch@array{%
  \def\@startpbox##1{\bgroup
   \box@dir\adjustbaseline%%% これを追加
   \hsize=##1\@arrayparboxrestore
     \everypar{%
        \vrule \@height \ltjgetht\@arstrutbox \@width \z@
        \everypar{}}%
     }
  \def\@tabarray{\@ifnextchar<\p@tabarray{\p@tabarray<Z>}}
  \def\p@array<##1>[##2]##3{%
    \let\box@dir\relax
    \if ##1z\relax
      \ifnum\ltjgetparameter{direction}=3\relax
        \let\box@dir\utod\@tempcnta=\zstrutbox
      \fi
    \else
      \if ##1y\relax
        \let\box@dir\yoko\@tempcnta=\strutbox
      \else\if ##1t\relax
        \let\box@dir\tate\@tempcnta=\tstrutbox
      \else\if ##1d\relax
         \let\box@dir\dtou\@tempcnta=\dstrutbox
      \else\if ##1u\relax
         \let\box@dir\utod\@tempcnta=\zstrutbox
      \fi\fi\fi\fi
    \fi
    \ifx\box@dir\relax
      \ifcase\ltjgetparameter{direction}
         \or   \let\box@dir\dtou\@tempcnta=\tabskip \z@\tabskip \z@\dstrutbox% dtou
         \or\or\let\box@dir\tate\@tempcnta=\tstrutbox% tate
         \or   \let\box@dir\yoko\@tempcnta=\strutbox% yoko
         \else \let\box@dir\utod\@tempcnta=\zstrutbox% utod
      \fi
    \fi
    \setbox \@arstrutbox \hbox{\box@dir\vrule
               \@height \arraystretch
                 \dimexpr \ltjgetht\@tempcnta+\extrarowheight\relax
               \@depth \arraystretch \ltjgetdp \@tempcnta
               \@width \z@}%
    \fork@array@option<##1>[##2]%
    \begingroup
    \@mkpream{##3}%
    \xdef\@preamble{\ialign \noexpand \@halignto
                    \bgroup \tabskip \z@skip \@arstrut \@preamble
                            \tabskip \z@ \cr}%
    \endgroup
    \@arrayleft
    \@begin@alignbox\bgroup\box@dir\adjustbaseline
      \let\par\@empty
      \let\@sharp####\let\protect\relax
      \let\\\@arraycr\let\tabularnewline\\\let\par\@empty
     \lineskip\z@skip\baselineskip\z@skip\@preamble}
  \def\endarray{\crcr\egroup\egroup\@end@alignbox}
}

\@ifpackageloaded{array}{%
  \let\tabular=\ltj@lltjext@orig@tabular
  \let\array=\ltj@lltjext@orig@array
  \ltj@lltjext@patch@array
}{%
  \let\ltj@lltjext@orig@tabular\relax
  \let\ltj@lltjext@orig@array\relax
  \RequirePackage{filehook}
  \AtEndOfPackageFile{array}{\ltj@lltjext@patch@array}
}


\endinput
