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+%D \module
+%D [ file=supp-fun,
+%D version=1995.10.10,
+%D title=\CONTEXT\ Support Macros,
+%D subtitle=Fun Stuff,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\unprotect
+
+%D This module implements some typographics tricks that can
+%D be fun when designing document layouts. The examples use
+%D macros that are typical to \CONTEXT, but non \CONTEXT\
+%D users can use the drop caps and first line treatment
+%D macros without problems. This module will be extended
+%D when the need for more of such tricks arises.
+
+\ifx \undefined \writestatus \input supp-mis.tex \relax \fi
+
+\writestatus{loading}{ConTeXt Support Macros / Fun Stuff}
+
+\ifx\definefont\undefined
+ \def\definedfont[#1]{\font\temp#1\relax\temp}
+\fi
+
+%D \macros
+%D {DroppedCaps, DroppedString, DroppedIndent, DroppedLines}
+%D
+%D \startbuffer
+%D \DroppedCaps
+%D {\color[green]} {cmbx12}
+%D {2.2\baselineskip} {2pt} {\baselineskip} {2}
+%D Let's start
+%D \stopbuffer
+%D
+%D \getbuffer with dropped caps, those blown up first
+%D characters of a paragraph. It's hard to implement a general
+%D mechanism that suits all situations, but dropped caps are so
+%D seldomly used that we can permit ourselves a rather user
+%D unfriendly implementation.
+%D
+%D \typebuffer
+%D
+%D As we will see, there are 7 different settings involved. The
+%D first argument takes a command that is used to do whatever
+%D fancy things we want to do, but normally this one will be
+%D empty. The second argument takes the font. Because we're
+%D dealing with something very typographic, there is no real
+%D reason to adopt complicated font switching schemes, a mere
+%D name will do. Font encodings can bring no harm, because the
+%D alphanumeric characters are nearly always located at their
+%D natural position in the encoding vector.
+%D
+%D \startbuffer
+%D \DroppedCaps
+%D {\color[red]} {cmbx12}
+%D {\baselineskip} {0pt} {0pt} {1}
+%D This simple
+%D \stopbuffer
+%D
+%D \getbuffer case shows us what happens when we apply minimal
+%D values. Here we used:
+%D
+%D \typebuffer
+%D
+%D \startbuffer
+%D \DroppedCaps
+%D {\color[red]} {cmbx12}
+%D {2\baselineskip} {0pt} {\baselineskip} {2}
+%D Is this ugly
+%D \stopbuffer
+%D
+%D \getbuffer example the third argument tells
+%D this macro that we want a dropped capital scaled to the
+%D baseline distance. The two zero point arguments are the
+%D horizontal and vertical offsets and the last arguments
+%D determines the hanging indentation. In this paragraph we
+%D set the height to two times the baselinedistance and use
+%D two hanging lines:
+%D
+%D \typebuffer
+%D
+%D Here, the first character is moved down one baseline. Here
+%D we also see why the horizontal offset is important. The
+%D first example (showing the~L) sets this to a few points and
+%D also used a slightly larger height.
+%D
+%D Of course common users (typist) are not supposed to see this
+%D kind of fuzzy definitions, but fortunately \TEX\ permits us
+%D to hide them in macros. Using a macro also enables us to
+%D garantee consistency throughout the document:
+%D
+%D \startbuffer
+%D \def\MyDroppedCaps%
+%D {\DroppedCaps
+%D {\color[green]} {cmbx12}
+%D {5\baselineskip} {3pt} {3\baselineskip} {4}}
+%D
+%D \MyDroppedCaps The implementation
+%D \stopbuffer
+%D
+%D \typebuffer
+%D
+%D \getbuffer of the general macro is rather simple and only
+%D depends on the arguments given and the dimensions of the
+%D strut box. We explicitly load the font, which is no problem
+%D because \TEX\ does not load a font twice. We could have
+%D combined some arguments, like the height, vertical offset
+%D and the number of lines, but the current implementation
+%D proved to be the most flexible. One should be aware of the
+%D fact that the offsets depend on the design of the glyphs
+%D used.
+
+\let\DroppedIndent\!!zeropoint \def\DroppedLines{0}
+
+\def\DroppedString{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
+
+\let\globaldropcaps\global % will be an option, but on by default
+
+\def\localdropcaps{\let\globaldropcaps\relax}
+
+\chardef\DroppedStatus = 0 % 0=done 1=starting 2=doing 3=error
+\chardef\DropMode = 0 % 1 == marginhang
+
+\ifx\keeplinestogether\undefined
+ \let\keeplinestogether\gobbleoneargument
+\fi
+
+\def\DroppedCaps#1#2#3#4#5#6#7% does not yet handle accented chars
+ {\defconvertedargument\asciia{#7}%
+ \defconvertedcommand \asciib{\DroppedString}%
+ \ExpandBothAfter\doifinstringelse\asciia\asciib
+ {\noindentation
+ \dontleavehmode
+ \checkindentation % redo this one
+ %\ifhmode\hskip-\parindent\fi % sensitive for context mechanism
+ \keeplinestogether{#6}%
+ \setbox0\hbox{\definedfont[#2 at #3]#1{#7}\hskip#4}%
+ \ifdim\dp0>\strutdp % one of those Q's , will be option
+ \setbox2\hbox{\raise\dp0\hbox{\lower\strutdp\copy0}}%
+ \ht2\ht0
+ \dp0\strutdp
+ \setbox0\box2
+ \fi
+ \setbox0\hbox
+ {\ifnum\DropMode=\plusone
+ \hskip-\wd0\wd0\zeropoint
+ \fi
+ \lower#5\box0}%
+ \ht0\strutht
+ \dp0\strutdp
+ \ifnum\DropMode=\plusone
+ \globaldropcaps\let\DroppedIndent\!!zeropoint
+ \globaldropcaps\edef\DroppedLines{\number\maxdimen}%
+ \globaldropcaps\chardef\DroppedStatus\plusthree
+ \else
+ \globaldropcaps\edef\DroppedIndent{\the\wd0}%
+ \globaldropcaps\edef\DroppedLines {\number#6}%
+ \globaldropcaps\chardef\DroppedStatus\plustwo
+ \globaldropcaps\hangindent\DroppedIndent
+ \globaldropcaps\hangafter-\DroppedLines
+% \noindent
+ \noindentation
+ \checkindentation % redo this one
+ \hskip-\DroppedIndent
+ \fi
+ \vbox{\forgetall\box0}%
+ \nobreak
+ \let\next\ignorespaces} % Could be a one character word !
+ {\globaldropcaps\let\DroppedIndent\!!zeropoint
+ \globaldropcaps\edef\DroppedLines{\number\maxdimen}%
+ \globaldropcaps\chardef\DroppedStatus\plusthree
+ \def\next{#7}}%
+ \let\globaldropcaps\global
+ \next}
+
+%D Before we go to the next topic, we summarize this command:
+%D
+%D \starttyping
+%D \DroppedCaps
+%D {command} {font}
+%D {height} {hoffset} {voffset} {lines}
+%D \stoptyping
+%D
+%D Sometimes you need to make sure that the global settings are
+%D kept local, as in:
+%D
+% %D \startbuffer
+% %D \defineparagraphs[SomePar][n=2,rule=on]
+% %D \setupparagraphs [SomePar][1][width=.5\textwidth]
+% %D \setupparagraphs [SomePar][2][width=.5\textwidth]
+%D \startbuffer
+%D \defineparagraphs[SomePar][n=2,rule=on]
+%D \setupparagraphs [SomePar][1][width=.5\textwidth]
+%D \setupparagraphs [SomePar][2][width=.5\textwidth]
+%D
+%D \startSomePar
+%D \localdropcaps\NiceDroppedCaps{}{cmr12}{0pt}{2}Here we need
+%D to explicitly keep the hanging indentation local, like it or
+%D not.
+%D \SomePar
+%D \localdropcaps\NiceDroppedCaps{}{cmr12}{0pt}{2}Here we need
+%D to explicitly keep the hanging indentation local, like it or
+%D not.
+%D \stopSomePar
+%D \stopbuffer
+%D
+%D \typebuffer \getbuffer
+
+%D \macros
+%D {AutoDroppedCaps, CheckDroppedCaps}
+%D
+%D {\em To be documented.}
+
+% example usage
+%
+% \def\bpar{\ifvmode\CheckDroppedCaps\fi}
+% \def\epar{\ifhmode\par\fi\CheckDroppedCaps}
+
+\newcount\lastprevgraf
+\newcount\droppedlines
+
+\def\CheckDroppedCaps
+ {\global\lastprevgraf\prevgraf}
+
+\def\AutoDroppedCaps % will be proper core stuff since it
+ {\globaldropcaps\chardef\DroppedStatus\plusone
+ \global\lastprevgraf\zerocount
+ \global\droppedlines\zerocount
+ \EveryPar{\doAutoDroppedCaps}}
+
+\let\AutoDroppedNext\relax
+
+\ifx\AutoDroppedCapsCommand\undefined
+ \def\AutoDroppedCapsCommand{\NiceDroppedCaps{}{SerifBold}{.125em}{3}}
+\fi
+
+\def\doAutoDroppedCaps
+ {\ifcase\DroppedStatus % done
+ \let\next\relax
+ \or % starting
+ % \ifnum\lastprevgraf>0 % tricky, probably a wrong par
+ % \globaldropcaps\chardef\DroppedStatus=3 % and inhibits dropped
+ % \let\next\relax % caps after titles and more than once
+ % \else % so let's nill this rubishly code fragment
+ \let\next\AutoDroppedCapsCommand
+ % \fi % and hope for the best
+ \or % doing
+ \global\advance\droppedlines \lastprevgraf
+ \ifnum\droppedlines=\zerocount
+ \globaldropcaps\chardef\DroppedStatus\zerocount
+ \let\next\relax
+ \else\ifnum\droppedlines>\zerocount
+ \ifnum\droppedlines<\DroppedLines\relax
+ \globaldropcaps\hangindent\DroppedIndent
+ \globaldropcaps\hangafter-\DroppedLines
+ \globaldropcaps\advance\hangafter \droppedlines
+ \hskip-\parindent % brrr
+ \let\next\AutoDroppedNext
+ \else
+ \globaldropcaps\chardef\DroppedStatus\zerocount
+ \let\next\relax
+ \fi
+ \else
+ \globaldropcaps\chardef\DroppedStatus\zerocount
+ \let\next\relax
+ \fi\fi
+ \or % error
+ \globaldropcaps\chardef\DroppedStatus\zerocount
+ \let\next\relax
+ \fi
+ \next}
+
+%D \macros
+%D {LineDroppedCaps, NiceDroppedCaps}
+%D
+%D To save definitions, we also provide:
+%D
+%D \starttyping
+%D \LineDroppedCaps {command} {font} {hoffset} {lines}
+%D \NiceDroppedCaps {command} {font} {hoffset} {lines}
+%D \stoptyping
+%D
+%D The first command scales the font to the exact height, while
+%D the second command scales the font to a nice 2.5 times the
+%D line height, a value that gives a pleasant grayness.
+
+\def\DoLineDroppedCaps#1#2#3#4#5% compensation command font offset lines
+ {\scratchcounter#5%
+ \advance\scratchcounter \minusone
+ \scratchdimen\scratchcounter\baselineskip
+ \advance\scratchdimen #1%
+ \NormalizeFontHeight\DummyFont{W}\scratchdimen{#3}%
+ \DroppedCaps{#2}{#3}\TheNormalizedFontSize{#4}
+ {\scratchcounter\baselineskip}{#5}}
+
+\def\LineDroppedCaps% command font offset lines
+ {\DoLineDroppedCaps{\strutht}}
+
+\def\NiceDroppedCaps% command font offset lines
+ {\DoLineDroppedCaps{.5\baselineskip}}
+
+%D \macros
+%D {TreatFirstLine}
+%D
+%D \startbuffer
+%D \TreatFirstLine {\sc} {} {} {}
+%D Instead of limiting its action to one token, the next macro
+%D treats the whole first line. This paragraph was typeset by
+%D saying:
+%D \stopbuffer
+%D
+%D \getbuffer
+%D
+%D \typebuffer
+%D
+%D \startbuffer
+%D \TreatFirstLine {\startcolor[red]\bf} {\stopcolor} {} {}
+%D The combined color and font effect is also possible,
+%D although one must be careful in using macros that accumulate
+%D grouping, but the commands used here are pretty save in that
+%D respect.
+%D \stopbuffer
+%D
+%D \getbuffer
+%D
+%D \typebuffer
+%D
+%D Before we explain the third and fourth argument, we show the
+%D implementation. Those who know a bit about the way \TEX\
+%D treats tokens, will probably see in one glance that this
+%D alternative works all right for most text||only situations
+%D in which there is enough text available for the first line,
+%D but that more complicated things will blow. One has to live
+%D with that. A workaround is rather trivial but obscures the
+%D principles used.
+
+\def\TreatFirstLine#1#2#3#4% before, after, first, next
+ {\leavevmode
+ \bgroup
+ \forgetall
+ \bgroup
+ #1%
+ \setbox0\emptybox
+ \setbox2\emptybox
+ \def\grabfirstline##1 %
+ {\setbox2\hbox
+ {\ifvoid0
+ {#3{\ignorespaces##1}}%
+ \else
+ \unhcopy0\ {#4{##1}}%
+ \fi}%
+ \ifdim\wd2=\zeropoint
+ \setbox0\emptybox
+ \setbox2\emptybox
+ \@EA\grabfirstline
+ \else\ifdim\wd2>\hsize
+ \hbox to \hsize{\strut\unhbox0}#2\egroup
+ \break##1\
+ \egroup
+ \else
+ \setbox0\box2
+ \@EAEAEA\grabfirstline
+ \fi\fi}%
+ \grabfirstline}
+
+%D \startbuffer
+%D \gdef\FunnyCommand
+%D {\getrandomfloat\FunnyR{0}{1}%
+%D \getrandomfloat\FunnyG{0}{1}%
+%D \getrandomfloat\FunnyB{0}{1}%
+%D \definecolor[FunnyColor][r=\FunnyR,g=\FunnyG,b=\FunnyB]%
+%D \color[FunnyColor]}
+%D
+%D %\TreatFirstLine {\bf} {} {\FunnyCommand} {\FunnyCommand}
+%D The third and fourth argument can be used to gain special
+%D effects on the individual words. Of course one needs ...
+%D \stopbuffer
+%D
+%D \getbuffer
+%D to know a bit more about the macro package used to get real
+%D nice effects, but this example probably demonstrates the
+%D principles well.
+%D
+%D \typebuffer
+%D
+%D Like in dropped caps case, one can hide such treatments in a
+%D macro, like:
+%D
+%D \starttyping
+%D \def\MyTreatFirstLine%
+%D {\TreatFirstLine{\bf}{}{\FunnyCommand}{\FunnyCommand}}
+%D \stoptyping
+
+%D \macros
+%D {reshapebox}
+%D
+%D \startbuffer
+%D \beginofshapebox
+%D When using \CONTEXT, one can also apply this funny command
+%D to whole lines by using the reshape mechanism. Describing
+%D this interesting mechanism falls outside the scope of this
+%D module, so we only show the trick. This is an example of
+%D low level \CONTEXT\ functionality: it's all there, and it's
+%D stable, but not entirely meant for novice users.
+%D \endofshapebox
+%D
+%D \reshapebox{\FunnyCommand{\box\shapebox}} \flushshapebox
+%D \stopbuffer
+%D
+%D \getbuffer
+%D
+%D \typebuffer
+%D
+%D This mechanism permits hyphenation and therefore gives
+%D better results than the previously discussed macro
+%D \type{\TreatFirstLine}.
+
+%D \macros
+%D {TreatFirstCharacter}
+%D
+%D \startbuffer
+%D \TreatFirstCharacter{\bf\color[green]} Just to be
+%D \stopbuffer
+%D
+%D \getbuffer complete we also offer a very simple one
+%D character alternative, that is not that hard to understand:
+
+\def\TreatFirstCharacter#1#2% command, character
+ {{#1{#2}}}
+
+%D A previous paragraph started with:
+%D
+%D \typebuffer
+
+%D \macros
+%D {StackCharacters}
+%D
+%D The next hack deals with vertical stacking.
+
+\def\StackCharacters#1#2#3#4% sequence vsize vskip command
+ {\vbox #2
+ {\forgetall
+ \baselineskip\zeropoint
+ \def\StackCharacter##1{#4{##1}\cr\noalign{#3}}%
+ \halign
+ {\hss##\hss&##\cr
+ \handletokens#1\with\StackCharacter\cr}}}
+
+%D \startbuffer
+%D \StackCharacters{CONTEXT}{}{\vskip.2ex}{\FunnyCommand}
+%D \stopbuffer
+%D
+%D Such a stack looks like:
+%D
+%D \startlinecorrection
+%D \hbox to \hsize
+%D {$\hss\bfd
+%D \vcenter{\StackCharacters{TEX} {}{\vskip.2ex}{\FunnyCommand}}%
+%D \hss
+%D \vcenter{\StackCharacters{CON} {}{\vskip.2ex}{\FunnyCommand}}
+%D \hss
+%D \vcenter{\StackCharacters{TEXT} {}{\vskip.2ex}{\FunnyCommand}}
+%D \hss
+%D \vcenter{\StackCharacters{CONTEXT}{}{\vskip.2ex}{\FunnyCommand}}
+%D \hss$}
+%D \stoplinecorrection
+%D
+%D and is typeset by saying:
+%D
+%D \typebuffer
+%D
+%D An alternative would have been
+%D
+%D \starttyping
+%D \StackCharacters {CONTEXT} {to 5cm} {\vfill} {\FunnyCommand}
+%D \stoptyping
+
+%D \macros
+%D {processtokens}
+%D
+%D At a lower level horizontal and vertical manipulations are
+%D already supported by:
+%D
+%D \starttyping
+%D \processtokens {begin} {between} {end} {space} {text}
+%D \stoptyping
+%D
+%D \startbuffer[a]
+%D \processtokens
+%D {\hbox to .5\hsize\bgroup} {\hfill}
+%D {\egroup} {\space} {LET'S HAVE}
+%D \stopbuffer
+%D
+%D \startbuffer[b]
+%D \processtokens
+%D {\vbox\bgroup\raggedcenter\hsize1em}
+%D {\vskip.25ex} {\egroup} {\strut} {FUN}
+%D \stopbuffer
+%D
+%D This macro is able to typeset:
+%D
+%D \leavevmode\hbox to \hsize
+%D {$\hfil\hfil
+%D \vcenter{\bf\getbuffer[a]}%
+%D \hfil
+%D \vcenter{\bfd\getbuffer[b]}%
+%D \hfil\hfil$}
+%D
+%D which was specified as:
+%D
+%D \typebuffer[a]
+%D \typebuffer[b]
+
+%D \macros
+%D {NormalizeFontHeight, NormalizeFontWidth,
+%D TheNormalizedFontSize}
+%D
+%D Next we introduce some font manipulation macros. When we
+%D want to typeset some text spread in a well defined area, it
+%D can be considered bad practice to manipulate character and
+%D word spacing. In such situations the next few macros can be
+%D of help:
+%D
+%D \starttyping
+%D \NormalizeFontHeight \name {sample text} {height} {font}
+%D \NormalizeFontWidth \name {sample text} {width} {font}
+%D \stoptyping
+%D
+%D These are implemented using an auxilliary macro:
+
+\def\NormalizeFontHeight{\NormalizeFontSize\ht}
+\def\NormalizeFontWidth {\NormalizeFontSize\wd}
+
+% \def\NormalizeFontSize#1#2#3#4#5%
+% {\bgroup
+% \dimen0=#4% #4 can be \ht0 or so
+% \setbox0\hbox{\definedfont[#5 at 10pt]#3}%
+% \ifdim\wd0>\zeropoint
+% \dimen2=#10 % #1 is \wd or \ht
+% \dimen4=10000pt
+% \divide\dimen4 \dimen2
+% \divide\dimen0 \plusthousand
+% \dimen0=\number\dimen4\dimen0
+% \xdef\TheNormalizedFontSize{\the\dimen0}%
+% \else
+% \dimen0\bodyfontsize
+% \fi
+% \definedfont[#5 at \the\dimen0]%
+% \expandafter
+% \egroup
+% \expandafter\font\expandafter#2\fontname\font\relax}
+%
+% the familiar struggle with accuracy forces us to use:
+
+\def\NormalizeFontSize#1#2#3#4#5%
+ {\bgroup
+ \dimen0=#4% #4 can be \ht0 or so
+ \setbox0\hbox{\definedfont[#5 at 5pt]#3}% 10pt
+ \ifdim\wd0>\zeropoint
+ \dimen2=#10 % #1 is \wd or \ht
+ \dimen4=\maxdimen % 10000pt
+ \divide\dimen4 \dimen2
+ \divide\dimen0 1638 % 1000
+ \dimen0=\number\dimen4\dimen0
+ \divide \dimen0 \plustwo % ...
+ \xdef\TheNormalizedFontSize{\the\dimen0}%
+ \else
+ \dimen0\bodyfontsize
+ \fi
+ % mkii
+ % \definedfont[#5 at \the\dimen0]%
+ % \expandafter
+ % \egroup
+ % \expandafter\font\expandafter#2\fontname\font\relax}
+ % mkiv safe (file: prefix etc)
+ \expanded{\egroup\def\noexpand#2{\definedfont[#5 at \the\dimen0]}}}
+
+%D Afterwards, we have access to the calculated size by:
+
+\let\TheNormalizedFontSize\!!zeropoint
+
+%D Extra:
+
+\def\WidthSpanningText#1#2#3% text width font
+ {\hbox{\NormalizeFontWidth\temp{#1}{#2}{#3}\temp\the\everydefinedfont#1}}
+
+%D Consider for instance:
+%D
+%D \startbuffer
+%D \NormalizeFontHeight \tmp {X} {2\baselineskip} {cmr10}
+%D
+%D {\tmp To Be Or Not To Be}
+%D \stopbuffer
+%D
+%D \typebuffer
+%D
+%D This shows up as (we also show the baselines):
+%D
+%D {\showbaselines\getbuffer}
+%D
+%D The horizontal counterpart is:
+%D
+%D \startbuffer
+%D \NormalizeFontWidth \tmp {This Line Fits} {\hsize} {cmr10}
+%D
+%D \hbox{\tmp This Line Fits}
+%D \stopbuffer
+%D
+%D \typebuffer
+%D
+%D The calculated font scale is avaliable in the macro
+%D \type{\NormalizedFontSize}.
+%D
+%D \startlinecorrection
+%D \ruledhbox{\getbuffer}
+%D \stoplinecorrection
+%D
+%D One can of course combine these macros with the ones
+%D described earlier, like in:
+%D
+%D \starttyping
+%D \NormalizeFontHeight {text} \DroppedFont {2\baselineskip} {cmbx12}
+%D
+%D \def\NicelyDroppedCaps
+%D {\DroppedCaps
+%D {\color[green]}
+%D {\DroppedFont}
+%D {2pt}
+%D {\baselineskip}
+%D {2}}
+%D \stoptyping
+%D
+%D It's up to the reader to test this one.
+
+\unexpanded\def\FirstNCharacters#1#2% \FirstNCharacters{3}{fr{\"o}beln}
+ {\bgroup
+ \scratchcounter\zerocount
+ \def\docommand##1%
+ {\ifnum\scratchcounter=#1\else
+ ##1\relax % catches ##1 = \"e and alike
+ \advance\scratchcounter\plusone
+ \fi}
+ \handletokens#2\with\docommand
+ \egroup}
+
+%D \macros
+%D {FittingText}
+%D
+%D First used in Pascal (demo-bbv):
+%D
+%D \startbuffer
+%D \ruledvbox{\FittingText{3cm}{1cm}{Serif}{24pt}{1pt}{1}
+%D {\veryraggedright
+%D \hangindent1em\hangafter1\relax
+%D \begstrut \dorecurse{8}{Bram Marta }\unskip \endstrut}}
+%D
+%D \ruledvbox{\FittingText{3cm}{1cm}{Serif}{24pt}{1pt}{1}
+%D {\raggedleft\begstrut Bram\\Marta \unskip\endstrut}}
+%D \stopbuffer
+%D
+%D \typebuffer
+%D
+%D \startlinecorrection
+%D \getbuffer
+%D \stoplinecorrection
+
+% #1 width #2 height #3 font #4 size #5 step #6 interlinie #7 text
+
+\long\def\FittingText#1#2#3#4#5#6#7%
+ {\bgroup
+ \forgetall
+ \dontcomplain
+ \setuptolerance[\v!verytolerant]% == \tolerance4500
+ \hsize#1%
+ \def\\{\softbreak}%
+ \!!heighta#4%
+ \!!heightb#2%
+ \doloop
+ {\ifdim\!!heighta>\onepoint
+ \expanded{\definefont[\s!dummy][#3 at \the\!!heighta][\c!interlinespace=#6]}%
+ \getvalue\s!dummy
+ \setbox\scratchbox\vbox{#7\endgraf}%
+ \ifdim\ht\scratchbox>\!!heightb
+ \advance\!!heighta-#5%
+ \else
+ \beginshapebox
+ \unvcopy\scratchbox
+ \endshapebox
+ \global\dimen1\hsize
+ \reshapebox
+ {\setbox\shapebox\hbox{\unhbox\shapebox}%
+ \ifdim\wd\shapebox>\dimen1
+ \global\dimen1\wd\shapebox
+ \fi}%
+ \ifdim\dimen1>\hsize
+ \advance\!!heighta-#5%
+ \else
+ \exitloop
+ \fi
+ \fi
+ \else
+ \exitloop
+ \fi}%
+ %\writestatus{\strippedcsname\FittingText}{height: \the\!!heighta}%
+ \unvbox\scratchbox
+ \egroup}
+
+%D New:
+
+% \font width gap font spec text
+
+\def\NormalizeFontWidthSpread#1#2#3#4#5#6%
+ {\global\setfalse\NFSpread
+ \scratchdimen#3%
+ \scratchdimen-.5\scratchdimen
+ \advance\scratchdimen#2\relax
+ \NormalizeFontWidth
+ #1%
+ {\def\+{\global\settrue\NFSpread\gobbleuntil\relax}%
+ \def\\{\gobbleuntil\relax}% newline
+ \setupspacing
+ #6\relax}%
+ {\scratchdimen}%
+ {#4}%
+ \ifconditional\NFSpread
+ % de gap valt in de binding
+ \else
+ \definefont[\strippedcsname#1][#4 #5]%
+ \fi}
+
+\def\SpreadGapText#1#2%
+ {{\def\+{\kern#1}#2}}
+
+\def\GapText#1#2#3#4#5% width distance font spec title
+ {\bgroup
+ \NormalizeFontWidthSpread\DummyFont{#1}{#2}{#3}{#4}{#5}%
+ \DummyFont\setupspacing\SpreadGapText{#2}{#5}\endgraf
+ \egroup}
+
+\protect \endinput
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 15:11:55 +0000