LilyPond module

[Henning Hraban Ramm <hraban@fiee.net>]

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Hi there!

I'm trying to fix the LilyPond module for LilyPond 2.9.x (find my  
current version attached).
One of the problems is, that the EPS/PDF produced by LilyPond is  
always too big (doesn't obey the ordered dimensions, but is uniformly  
upscaled).
The code after line 250 should shift the notes to the left, if the  
line is wider than ordered - that worked in previous versions,  
because it was only wider, if there was text in front of the score.

So, if I calculate the scaling factor (ca. 1.5), how can I use it in  
the module? Sorry, I still can't code in TeX...

(At the same time I try to get answers on the LilyPond list how to  
avoid the scaling.)

Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://contextgarden.net
http://www.cacert.org (I'm an assurer)

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%D \module
%D   [       file=t-lilypond,
%D        version=2006.09.17,
%D          title=\CONTEXT\ User Modules,
%D       subtitle=Lilypond Connections (Music Typesetting),
%D         author=Christopher Creutzig,
%D           date=\currentdate,
%D      copyright=Christopher Creutzig]

%M \usemodule[lilypond]

%D This module serves to include lilypond music directly in the
%D \CONTEXT\ source, just as \METAPOST\ code can be.  Before starting
%D with the implementation, one or two examples are in order.
%D \startbuffer[sample]
%D \startlilypond
%D % Telemann, TWV 40:11
%D \version "2.9.16"
%D 
%D \relative c' {
%D \set Staff.instrumentName = flute
%D \key fis \minor
%D \time 3/4
%D \partial 4
%D 
%D    r8 fis'8 | fis4. cis8 a cis | fis, a cis fis a fis |
%D    b, d fis b d b | eis,, gis cis eis gis b, |
%D    a fis' gis, fis' cis eis | fis,4 r8
%D    a' gis fis | e gis, a e' fis cis |
%D    d fis, gis b e d | cis4 \trill r8
%D    cis b a | b dis e gis cis, b |
%D    a e' dis fis b, a | gis4 \trill r8
%D }
%D \stoplilypond
%D \stopbuffer
%D
%D The input
%D
%D \typebuffer[sample]
%D
%D is typeset as
%D
%D \getbuffer[sample]
%D
%D \type{\startlilypond} accepts options, as in\crlf
%D \type{\startlilypond[staffsize=24, linewidth=14cm, indent=5cm, time=no]}:
%D 
%D \nobreak
%D \startlilypond[staffsize=24,linewidth=14cm,indent=5cm,time=no]
%D \version "2.9.16"
%D \relative c' {
%D \set Staff.instrumentName = flute
%D \key fis \minor
%D \time 3/4
%D \partial 4
%D    r8 fis'8 | fis4. cis8 a cis | fis, a cis fis a fis |
%D    b, d fis b d b | eis,, gis cis eis gis b, |
%D    a fis' gis, fis' cis eis | fis,4 r8
%D    a' gis fis | e gis, a e' fis cis |
%D    d fis, gis b e d | cis4 \trill r8
%D    cis b a | b dis e gis cis, b |
%D    a e' dis fis b, a | gis4 \trill r8
%D }
%D \stoplilypond
%D
%D It is also possible to mix text and music:
%D \lower 8.2pt\hbox{\lilypond[fragment=true,staffsize=16,time=no]{g'}} is a g.
%D
%D TODO: Complete list of options.
%D
%D TODO: The \type{\lower} in the example above should not be necessary.
%D
%D TODO: Switches to turn off the clef etc.
%D
%D TODO: Proper support for multipage results.
%D
%D TODO: lilypond -> \CONTEXT.
%D
%D \page
%D Now for the implementation.  As usual, we use a prefix for buffers,
%D \type{\getparameters} etc.:

\unprotect
\def\??lily{lilypond-}

%D Define the text snippets to be placed around fragments.
%D Since lilypond uses similar syntax to \TeX, we must do some catcode fiddling.
\bgroup
\catcode`\/=\@@escape
/catcode`/\=/@@other
/catcode`/#=/@@other
/catcode`/<=/@@begingroup
/catcode`/>=/@@endgroup
/catcode`/{=/@@other
/catcode`/}=/@@other
/catcode`/%=/@@other
/gdef/lily!fragmentprefix<
/string^^J
%\layout {/string^^J
%  /string^^J
% }/string^^J
/string^^J
{/string^^J
% ly snippet contents follows:/string^^J
>

/gdef/lily!fragmentsuffix</string^^J
% end ly snippet/string^^J
}/string^^J
>

/gdef/lily!prefix</string^^J
#(set! toplevel-score-handler print-score-with-defaults)/string^^J
#(set! toplevel-music-handler 
  (lambda (p m) 
   (if (not (eq? (ly:music-property m 'void) #t)) 
        (print-score-with-defaults 
         p (scorify-music m p)))))/string^^J
/string^^J
#(ly:set-option (quote no-point-and-click))/string^^J
/string^^J
#(define version-seen #t)/string^^J
/iflily!time/else
\layout {/string^^J
  raggedlast = ##t
%\context {/string^^J
% \Score/string^^J
% timing = ##f/string^^J
%}/string^^J
\context {/string^^J
 \Staff/string^^J
 \remove Time_signature_engraver/string^^J
}/string^^J
}/string^^J
/fi
\paper {/string^^J
  #(define dump-extents #t)/string^^J
  raggedright = /iflily!align ##f/else ##t/fi/string^^J
  indent = /withoutpt/the/lily!indent\pt/string^^J
  linewidth = /withoutpt/the/lily!linewidth\pt/string^^J
  vsize = /withoutpt/the/lily!vsize\pt/string^^J
  printpagenumber = ##f/string^^J
}/string^^J
>

/gdef/lily!hash<#>
/egroup

\newdimen\lily!linewidth
\newdimen\lily!vsize
\newdimen\lily!indent
\newif\iflily!align
\newif\iflily!time

\newcount\lily!figures

%D Again, as usual, there is a \type{\setuplilypond} command
%D that accepts the same parameters as \type{\lilypond} and
%D \type{\startlilypond} do in their optional argument:
\def\setuplilypond{\dosingleempty\dosetuplilypond}

\def\dosetuplilypond[#1]{%
   \getparameters[\??lily][#1]%
}

%D We set the following defaults:
\setuplilypond
  [staffsize=20,
   indent=0pt,
   time=\v!yes,
   align=?,% default depends on fragment=...
   fragment=\v!no,
   ]

%D \type{\startlilypond} is a multistage implementation, because
%D end-of-line characters must be treated specially in the
%D \type{\startlilypond}\textellipsis\type{\stoplilypond} range.
\def\startlilypond{\dosingleempty\dostartlilypond}

\def\dostartlilypond[#1]{%
   \bgroup
   \obeylines
   \dodostartlilypond[{#1}]%
}

\long\def\dodostartlilypond[#1]#2\stoplilypond{%
   \egroup% from \dostartlilypond
   \bgroup%
%D The default of the \type{linewidth} parameter is the local
%D \type{\hsize}.
   \setlocalhsize
   \getparameters[\??lily][linewidth=\the\localhsize,height=\the\textheight,#1]%
   \lily!linewidth\dimexpr\getvalue{\??lily linewidth}\relax
   \lily!vsize\dimexpr\getvalue{\??lily height}\relax
   \lily!indent\dimexpr\getvalue{\??lily indent}\relax
%D The default of \type{align} depends on whether we typeset a fragment:
   \@EAEAEA\doifelse\getvalue{\??lily align}{\v!yes}%
      \lily!aligntrue\lily!alignfalse
   \@EAEAEA\doif\getvalue{\??lily fragment}{\v!no}{%
     \@EAEAEA\doif\getvalue{\??lily align}?
        \lily!aligntrue
   }%
   \@EAEAEA\doifelse\getvalue{\??lily time}\v!yes
      \lily!timetrue\lily!timefalse
%D We are using a counter to keep the different lilypond pieces
%D separate.  This allows to typeset them only once, during the
%D first run.
%D
%D TODO: This won't work any longer once we pass the remaining
%D vertical space to lilypond.
   \global\advance\lily!figures\plusone
   \startmode[*\v!first]% 
   \def\obeyedlines{\string^^J}%
   \convertargument#2\to\ascii
   \expanded{%
   \setbuffer[lilypond-\the\lily!figures]%
   \lily!prefix
   \lily!hash(set-global-staff-size \getvalue{\??lily staffsize})\string^^J%
   \ifundefined{\??lily fragment}\else\lily!fragmentprefix\fi
   %% TODO: Option "packed"
   \ascii%
   \ifundefined{\??lily fragment}\else\lily!fragmentsuffix\fi
   }%
   \endbuffer%
%D Generating a pdf directly always creates a whole page, so we generate eps first.
%D If \type{\ifeof18} creates an error for you, your pdfetex is too old.
%D just change it to \iftrue then.  (\type{\ifeof18} checks whether \type{\write18}
%D is disabled.)
	\def\LP{/usr/local/bin/lilypond -b eps -f eps }
	\def\TU{/usr/local/teTeX/bin/powerpc-apple-darwin-current/texutil }
   \ifeof18
      \doif\jobsuffix{pdf}{%
	      \installprogram{\LP \bufferprefix lilypond-\the\lily!figures.tmp}%
         \installprogram{/usr/local/teTeX/bin/powerpc-apple-darwin-current/texutil --figures --epstopdf \bufferprefix lilypond-\the\lily!figures.eps}%
      }%
      %\else{\installprogram{\LP \bufferprefix lilypond-\the\lily!figures.tmp}%
   \else
      \executesystemcommand{\LP \bufferprefix lilypond-\the\lily!figures.tmp}%
      \doif\jobsuffix{pdf}{%
      	\executesystemcommand{\LP \bufferprefix lilypond-\the\lily!figures.tmp}%
         \executesystemcommand{\TU --figures --epstopdf \bufferprefix lilypond-\the\lily!figures.eps}%
      %\else{\installprogram{\LP \bufferprefix lilypond-\the\lily!figures.tmp}%
      }%
   \fi
   \stopmode% only first run
   \doifelse\jobsuffix{pdf}
     {\edef\lily!img{\bufferprefix lilypond-\the\lily!figures.pdf}}%
     {\edef\lily!img{\bufferprefix lilypond-\the\lily!figures.eps}}%
%D If we are not in the middle of some text, we have to check
%D whether lilypond created an image that is wider than requested:
%D It places the instrument names in the left margin.
%D
%D Problem: EPS is always too wide, we must scale it! (HR)
%D
%D TODO: Get the relevant dimension directly from lilypond,
%D to place the instrument name into the left margin for
%D short snippets as well.
   \ifvmode
      \getfiguredimensions[\bufferprefix lilypond-\the\lily!figures.pdf][]%
      \leavevmode
      \ifdim\figurewidth>\localhsize
        \!!dimena=\localhsize
        \advance\!!dimena by-\figurewidth
        \noindent\hskip\!!dimena
      \fi
   \fi
   \externalfigure[\lily!img][]%
   \egroup%
}%

%D For short snippets, we define an inline alternative to
%D our start/stop pair:
\def\lilypond{\dosingleempty\dolilypond}

\def\dolilypond[#1]#2{\startlilypond[#1]#2\stoplilypond}

\protect
%D End of file

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