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%D \module
%D [ file=page-app, % from meta-fig
%D version=1998.01.15,
%D title=\CONTEXT\ Page Macros,
%D subtitle=Independent page building,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Page Macros / Applications}
%D This needs an update with a proper define and inheritance.
\unprotect
\installcorenamespace{fittingpage}
\installframedcommandhandler \??fittingpage {fittingpage} \??fittingpage
\newdimen\d_page_fitting_width
\newdimen\d_page_fitting_height
\newbox \b_page_fitting
\definepapersize
[fittingpage]
[\c!width=\d_page_fitting_width,
\c!height=\d_page_fitting_height]
\definemakeup
[fittingpage]
[\c!textstate=\v!empty,
\c!doublesided=\v!no,
\c!location=\v!top, % no topskip
\c!pagestate=\fittingpageparameter\c!pagestate]%
\definelayout
[fittingpage]
[\v!page]
[\c!width=\d_page_fitting_width,
\c!height=\d_page_fitting_height,
\c!location=\v!middle]
\appendtoks
\setuevalue{\e!start\currentfittingpage}{\startfittingpage[\currentfittingpage]}%
\setuevalue{\e!stop \currentfittingpage}{\stopfittingpage}%
\to \everydefinefittingpage
\unexpanded\def\startfittingpage
{\dodoubleempty\page_fitting_start}
\def\page_fitting_start[#1][#2]%
{\page % this is kind of tricky! there can be preceding page refs
\autostarttext
\bgroup % resulting in a zero height page; test fig-make !
\setupinterlinespace[\v!top=0]% no topskip
\def\currentfittingpage{#1}%
\dontcomplain
% runs under current page regime, i.e. page variables passed to mp
\setupcurrentfittingpage[\c!paper=,#2]% auto or size or nothing
\doifelsenothing{\fittingpageparameter\c!command}
\page_fitting_start_normal
\page_fitting_start_command}
\def\page_fitting_start_command
{\grabuntil{\e!stop\currentfittingpage}\page_fitting_stop_command}
\def\page_fitting_stop_command#1%
{\page_fitting_start_normal
\fittingpageparameter\c!command{#1}%
\page_fitting_stop_normal}
\def\page_fitting_start_normal
{\setbox\b_page_fitting\hbox
\bgroup
\inheritedfittingpageframed
\bgroup
\gobblespacetokens}
\unexpanded\def\page_fitting_stop_normal % todo: figure out why a small mp image gets shifted
{\removeunwantedspaces
\egroup
\egroup
% finalize
\doif{\fittingpageparameter\c!margin}\v!page
{\setbox\b_page_fitting\hbox\bgroup
\offsetbox
[\c!leftoffset=\backspace,
\c!rightoffset=\cutspace,
\c!topoffset=\topspace,
\c!bottomoffset=\bottomspace]
{\box\b_page_fitting}%
\egroup}%
\doifsomething{\fittingpageparameter\c!scale}
{\setbox\b_page_fitting\hbox\bgroup
\scale[\c!scale=\fittingpageparameter\c!scale]{\box\b_page_fitting}%
\egroup}%
\ifdim\ht\b_page_fitting=\zeropoint
\ht\b_page_fitting\onepoint
\fi
\ifdim\wd\b_page_fitting=\zeropoint
\wd\b_page_fitting\onepoint
\fi
\d_page_fitting_width \wd\b_page_fitting
\d_page_fitting_height\ht\b_page_fitting
\startlocallayout % hm, we change the papersize so we still need it
\let\checkcurrentlayout\relax % else interference with odd/even layout
\processaction
[\fittingpageparameter\c!paper]
[ \v!auto=>\def\fittingpapersize{\printpapersize},
\s!unknown=>\let\fittingpapersize\commalistelement,
\s!default=>\def\fittingpapersize{fittingpage}]%
\expanded{\setuppapersize[fittingpage][\fittingpapersize]}%
\startmakeup[fittingpage]%
\box\b_page_fitting
\stopmakeup
\stoplocallayout % we need to get rid of this and use the built-in
\egroup
\autostoptext}
\let\stopfittingpage\page_fitting_stop_normal
\setupfittingpage
[%\c!scale=1000,
%\c!pagestate=,
\c!strut=\v!no,
\c!align=\v!normal,
\c!offset=\v!overlay,
\c!width=\v!fit,
\c!height=\v!fit,
\c!frame=\v!off]
%D \TEX\ pages (for \METAPOST\ pages, see \type {meta-fig}):
\definefittingpage
[TEXpage]
[\c!align=\v!normal] % needed, else problems !
\unexpanded\def\setupTEXpage
{\setupfittingpage[TEXpage]}
%D For Mojca:
%D
%D \starttyping
%D \startTEXstream \chapter{Bla} Hello world!\crlf Hello world! \stopTEXstream
%D \startTEXpage \chapter{Bla} Hello world!\crlf Hello world! \stopTEXpage
%D \stoptyping
%D
%D maybe I should support stream=yes in framed.
\unexpanded\def\startTEXstream
{\dosingleempty\page_streams_TEX_start}
\def\page_streams_TEX_start[#1]% old code, to be redone
{\page
\enableoutputstream[tex]}
\unexpanded\def\stopTEXstream
{\disableoutputstream
\startTEXpage
\outputstreamunvbox[tex]%
\stopTEXpage}
%D Application pages, a quick \MKIV\ hack:
\definetypesetting[TEXapplication]
\definebuffer[TEXapplication]
% we could use a counter and saves runs on numbering them.
\def\TEXapplicationfilename{\jobname-texapplication.tex}
\unexpanded\def\stopTEXapplication
{\savebuffer[\thedefinedbuffer{TEXapplication}][\TEXapplicationfilename]%
\typesetfile[TEXapplication][\TEXapplicationfilename]\relax}
%D \macros
%D {startpagefigure}
%D
%D \starttyping
%D \starttext \pagefigure[two.1] \stoptext
%D \stoptyping
\defineexternalfigure[\v!page:\v!figure][\c!offset=\v!overlay] % we force a parent
\unexpanded\def\startpagefigure
{\dodoubleempty\page_figures_start}
% this one:
%
% \def\page_figures_start[#1][#2]%
% {\bgroup
% \def\currentexternalfigure{\v!page:\v!figure}%
% \setupcurrentexternalfigure[\c!offset=\v!overlay,#2]%
% \startTEXpage[\c!offset=\externalfigureparameter\c!offset]%
% \externalfigure[#1]\ignorespaces} % so we can put some text below the graphic
%
% or this one:
\def\page_figures_start[#1][#2]%
{\bgroup
\setupexternalfigure[\v!page:\v!figure][\c!offset=\v!overlay,#2]%
\startTEXpage[\c!offset=\namedexternalfigureparameter{\v!page:\v!figure}\c!offset]%
\externalfigure[#1]\ignorespaces} % so we can put some text below the graphic
\unexpanded\def\stoppagefigure
{\stopTEXpage
\egroup}
\unexpanded\def\pagefigure
{\dodoubleempty\page_figure}
\def\page_figure[#1][#2]%
{\page_figures_start[#1][#2]\stoppagefigure}
\protect \endinput
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