%D \module
%D   [       file=m-typesetting,
%D        version=2017.11.15, % reused from columnset style
%D          title=\CONTEXT\ Modules,
%D       subtitle=Typesetting pages,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]

%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\startmodule[typesetting]

% \setupcombination
%   [style=mono]

\definecombination
  [twopages]

\definecombination
  [fourpages]
  [twopages]
  [distance=.5\bodyfontsize,
   width=\textwidth]

\definecombination
  [sixpages]
  [twopages]
  [distance=.5\bodyfontsize,
   width=\textwidth]

\definemeasure[firstpages][\dimexpr\dimexpr\textwidth-1  \bodyfontsize\relax/2\relax]
\definemeasure[twopages]  [\dimexpr\dimexpr\textwidth-3  \bodyfontsize\relax/4\relax]
\definemeasure[fourpages] [\dimexpr\dimexpr\textwidth-3  \bodyfontsize\relax/4\relax]
\definemeasure[sixpages]  [\dimexpr\dimexpr\textwidth-2.5\bodyfontsize\relax/6\relax]
\definemeasure[eightpages][\dimexpr\dimexpr\textwidth-3  \bodyfontsize\relax/4\relax]

\starttexdefinition unexpanded WhenValidPage#1
    \ifnum#1>\noffigurepages\relax
        \expandafter\gobbleoneargument
    \else
        \expandafter\firstofoneargument
    \fi
\stoptexdefinition

\starttexdefinition unexpanded OnePage #1
    \startlinecorrection[blank]
        \startcombination[twopages][1*1]
            {\typesetfile[#1.tex][page=1,lines=15]} {1}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded FirstPages #1
    \startlinecorrection[blank]
        \startcombination[twopages][2*1]
            {\typesetfile[#1.tex][page=1,width=\measure{firstpages}]} {1}
            {\typesetfile[#1.tex][page=2,width=\measure{firstpages}]} {2}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded OneSpread #1
    \startlinecorrection[blank]
        \startcombination[twopages][1*1]
            {\typesetfile[#1.tex][page=2,lines=15]} {2}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded TwoPages #1
    \startlinecorrection[blank]
        \startcombination[twopages][2*1]
            {\typesetfile[#1.tex][page=1,width=\measure{twopages}]} {1}
            {\typesetfile[#1.tex][page=2,width=\measure{twopages}]} {2}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded TwoSpread #1
    \startlinecorrection[blank]
        \startcombination[twopages][2*1]
            {\typesetfile[#1.tex][page=2,width=\measure{twopages}]} {2}
            {\typesetfile[#1.tex][page=3,width=\measure{twopages}]} {3}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded FourPages #1
    \startlinecorrection[blank]
        \startcombination[fourpages][4*1]
                              {\typesetfile[#1.tex][page=1,width=\measure{fourpages}]}                    {1}
            {\WhenValidPage{2}{\typesetfile[#1.tex][page=2,width=\measure{fourpages}]}} {\WhenValidPage{2}{2}}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{fourpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{fourpages}]}} {\WhenValidPage{4}{4}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded FourPairs #1
    \startlinecorrection[blank]
        \startcombination[fourpages][2*2]
                              {\typesetfile[#1.tex][page=1,width=\measure{firstpages}]}                    {1}
            {\WhenValidPage{2}{\typesetfile[#1.tex][page=2,width=\measure{firstpages}]}} {\WhenValidPage{2}{2}}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{firstpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{firstpages}]}} {\WhenValidPage{4}{4}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

% \starttexdefinition unexpanded FourPagesTwo #1#2
%     \startlinecorrection[blank]
%         \startcombination[fourpages][4*1]
%                               {\typesetfile[#1.tex][page=1,width=\measure{fourpages}]}                    {1}
%             {\WhenValidPage{2}{\typesetfile[#1.tex][page=2,width=\measure{fourpages}]}} {\WhenValidPage{2}{2}}
%                               {\typesetfile[#2.tex][page=1,width=\measure{fourpages}]}                    {1}
%             {\WhenValidPage{2}{\typesetfile[#2.tex][page=2,width=\measure{fourpages}]}} {\WhenValidPage{2}{2}}
%         \stopcombination
%     \stoplinecorrection
% \stoptexdefinition

\starttexdefinition unexpanded FourSpread #1
    \startlinecorrection[blank]
        \startcombination[fourpages][4*1]
                              {\typesetfile[#1.tex][page=2,width=\measure{fourpages}]}                    {2}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{fourpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{fourpages}]}} {\WhenValidPage{4}{4}}
            {\WhenValidPage{5}{\typesetfile[#1.tex][page=5,width=\measure{fourpages}]}} {\WhenValidPage{5}{5}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded SixPages #1
    \startlinecorrection[blank]
        \startcombination[sixpages][6*1]
                              {\typesetfile[#1.tex][page=1,width=\measure{sixpages}]}                    {1}
            {\WhenValidPage{2}{\typesetfile[#1.tex][page=2,width=\measure{sixpages}]}} {\WhenValidPage{2}{2}}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{sixpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{sixpages}]}} {\WhenValidPage{4}{4}}
            {\WhenValidPage{5}{\typesetfile[#1.tex][page=5,width=\measure{sixpages}]}} {\WhenValidPage{5}{5}}
            {\WhenValidPage{6}{\typesetfile[#1.tex][page=6,width=\measure{sixpages}]}} {\WhenValidPage{6}{6}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded SixSpread #1
    \startlinecorrection[blank]
        \startcombination[sixpages][6*1]
                              {\typesetfile[#1.tex][page=2,width=\measure{sixpages}]}                    {2}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{sixpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{sixpages}]}} {\WhenValidPage{4}{4}}
            {\WhenValidPage{5}{\typesetfile[#1.tex][page=5,width=\measure{sixpages}]}} {\WhenValidPage{5}{5}}
            {\WhenValidPage{6}{\typesetfile[#1.tex][page=6,width=\measure{sixpages}]}} {\WhenValidPage{6}{6}}
            {\WhenValidPage{7}{\typesetfile[#1.tex][page=7,width=\measure{sixpages}]}} {\WhenValidPage{7}{7}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded EightPages #1
    \startlinecorrection[blank]
        \startcombination[fourpages][4*2]
                              {\typesetfile[#1.tex][page=1,width=\measure{eightpages}]}                    {1}
            {\WhenValidPage{2}{\typesetfile[#1.tex][page=2,width=\measure{eightpages}]}} {\WhenValidPage{2}{2}}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{eightpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{eightpages}]}} {\WhenValidPage{4}{4}}
            {\WhenValidPage{5}{\typesetfile[#1.tex][page=5,width=\measure{eightpages}]}} {\WhenValidPage{5}{5}}
            {\WhenValidPage{6}{\typesetfile[#1.tex][page=6,width=\measure{eightpages}]}} {\WhenValidPage{6}{6}}
            {\WhenValidPage{7}{\typesetfile[#1.tex][page=7,width=\measure{eightpages}]}} {\WhenValidPage{7}{7}}
            {\WhenValidPage{8}{\typesetfile[#1.tex][page=8,width=\measure{eightpages}]}} {\WhenValidPage{8}{8}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\starttexdefinition unexpanded EightSpread #1
    \startlinecorrection[blank]
        \startcombination[fourpages][4*2]
                              {\typesetfile[#1.tex][page=2,width=\measure{eightpages}]}                    {2}
            {\WhenValidPage{3}{\typesetfile[#1.tex][page=3,width=\measure{eightpages}]}} {\WhenValidPage{3}{3}}
            {\WhenValidPage{4}{\typesetfile[#1.tex][page=4,width=\measure{eightpages}]}} {\WhenValidPage{4}{4}}
            {\WhenValidPage{5}{\typesetfile[#1.tex][page=5,width=\measure{eightpages}]}} {\WhenValidPage{5}{5}}
            {\WhenValidPage{6}{\typesetfile[#1.tex][page=6,width=\measure{eightpages}]}} {\WhenValidPage{6}{6}}
            {\WhenValidPage{7}{\typesetfile[#1.tex][page=7,width=\measure{eightpages}]}} {\WhenValidPage{7}{7}}
            {\WhenValidPage{8}{\typesetfile[#1.tex][page=8,width=\measure{eightpages}]}} {\WhenValidPage{8}{8}}
            {\WhenValidPage{9}{\typesetfile[#1.tex][page=9,width=\measure{eightpages}]}} {\WhenValidPage{9}{9}}
        \stopcombination
    \stoplinecorrection
\stoptexdefinition

\stopmodule