Changes

[http://www.lilypond.org LilyPond] is a great music engraver, and you can include LilyPond in ConTeXt source using [httphttps://modulesgithub.contextgardencom/adityam/filter the filter module] with some setup.net/t-lilypond This is different from using the lilypond module-book preprocessor with LaTeX. (For LaTeX there’s also a package that works similar to our ConTeXt setup here: [https://github.com/jperon/lyluatex lyluatex].)

== Simple Filter Setup == This works with ConTeXt MkII and MkIV, but takes only the first page of multi-pages scores, and you must create the folder "lilytemp" manually:

\def\readPDFfile#1{\externalfigure[#1]} \usemodule[filter]\defineexternalfilter[lilypond] [continue=yes, readcommand=\readPDFfile, directory=lilytemp/, % directory for LilyPond's files output={\externalfilterbasefile.pdf}, filtercommand={lilypond-dbackend=eps -ddelete-intermediate-files -o"lilytemp/\externalfilterbasefile" "\externalfilterinputfile"}]

== Snippets Multi Page Filter Setup == This uses Lua and therefore only works with ConTeXt MkIV. It includes all pages of multi-page scores.It doesn’t look into the complete (multi-page) PDF, but reads a "-system.count" auxiliary file written by LilyPond that contains the number of systems (pages) and includes the single-system PDFs.

There are some notes \lilyponddef\LILYTEMP{lilytemp} % name of folder for LilyPond/buffer files \def\ParseLilypondFile#1% #1 is the name of the output file { \relativectxlua{bes a c bthirddata.parselilypondfile("#1")}}  \startluacode thirddata = thirddata or {} embedded in this line -- create temp folder if missing if not lfs.isdir("\LILYTEMP") then lfs.mkdir("\LILYTEMP") end function thirddata.parselilypondfile(name) -- include all systems (pages) -- name is like \LILYTEMP/mainfile-temp-lilypond-21.pdf logs.report("LILYPOND","name='" .. name .. "'") local scname = string.gsub(name, '%.pdf$', '-systems.count') local syco = tonumber(io.loaddata(scname)) or 0 for nr = 1, syco do logs.report("LILYPOND","including system no." .. nr) context("\\externalfigure[" .. string.gsub(name, '%.pdf$', '-' .. nr) .. "]") end end\stopluacode \usemodule[filter]\defineexternalfilter[lilypond] [continue=yes, cache=yes, readcommand=\ParseLilypondFile, directory=\LILYTEMP/, output={\externalfilterbasefile.pdf}, filtercommand={lilypond -dbackend=eps -ddelete-intermediate-files -o"\LILYTEMP/\externalfilterbasefile/" "\externalfilterinputfile"},]

E.g. for == LilyPond Settings == Collect your LilyPond settings in a songbook you want to place big chunks of LilyPond output (i.e. note staffs) ly file, put it in your text. It behaves lilytemp directory and include it from within your lilypond block like any other graphics, especially similar to embedded [[Metapost|MetaPost]] codethis:

\section{A Tune}startlilypond\include "mysettings.ly"...\stoplilypond</texcode>

You can avoid this \startlilypondinclude line following [http://modules.contextgarden.net/dl/t-filter/doc/context/third/filter/filter.txt filter module documentation], section "Prepend and append text".In short: you can inline your complete LilyPond settings or at least the include line: <texcode>\relative startbuffer[lilypond::settings]\include "mysettings.ly"\stopbuffer \defineexternalfilter[lilypond][ ... bufferbefore={lilypond::settings}, ...]</texcode> === Sample Include File === "mysettings.ly" could look like this: <texcode>\repeat volta version "2 {.18.2"#(ly:set-option (quote no-point-and-click))#(set-global-staff-size 14) % --- start of setup for single-line output files ---#(define default-toplevel-book-handler \partial 4 e4 | print-book-with-defaults-as-systems ) a2 c4 d | e2 f4 e |#(define toplevel-book-handler d2 (lambda ( . c4 |rest) b4 (set! output-empty-score-list #f) (apply print-book-with-defaults rest))) #(define toplevel-music-handler (lambda ( . c8 d4 e |rest) a,2 c4 d | (apply collect-music-for-book rest))) e2 f4 e | g,2 a |#(define toplevel-score-handler \partial 2 (lambda ( . b2rest) (apply collect-scores-for-book rest))) #(define toplevel-text-handler (lambda ( . |rest) (apply collect-scores-for-book rest))) #(set! output-empty-score-list #t) % --- stop single-line setup --- \paper { }#(define dump-extents #t) indent = 0\repeat volta 2 {mm ragged-bottom = ##t ragged-last-bottom = ##t print-page-number = ##f line-width = 120\partial 4 r4 |mm oddFooterMarkup = ##f oddHeaderMarkup = ##f' g bookTitleMarkup = ##f d | e scoreTitleMarkup = ##f e c | a b c d |} \layout { #(layout-set-staff-size 14) % beware, this resets fonts! % set fonts for rm / ss / tt #(define fonts (make-pango-font-tree "TeX Gyre Schola" "LMSans10" "LMTypewriter10 Regular" (/ 14 20))) \context { \Score e2. e4 |\remove "Bar_number_engraver" f g f8 e d4 |\override PaperColumn #'keep-inside-line = ##t e f e c | } a c b8 a g4 | % some example settings \context { \Staff \override TimeSignature #'style = #'numbered } \alternative context {\ChordNames { \partial 2. g2. }chordChanges = ##t majorSevenSymbol = \markup{ \partial 2. a2. 7+ }

Please look up the meaning of settings in [http://lilypond.org/doc/v2.22/Documentation/web/manuals LilyPond’s great documentation]! If you’d like to exchange measures like text width between ConTeXt and LilyPond, you could write those into the LilyPond buffer (see below). To give LilyPond measures to ConTeXt, you would need to write them into a temp file (using Scheme) and read that in again (using Lua).For the time being this is left as an exercise to the user. ;) Unfortunately you can’t define LilyPond’s text (lyrics) size with an absolute value, but only relative to staff size... == DeveloperNamed Buffers == Normally, your LilyPond snippets just get a running number. If you re-order your scores, each one gets re-rendered. You can avoid that if you name your LilyPond snippets: just add <tt>[name=myfunnyname]</tt> to {{cmd|startlilypond}}. If you have just one LilyPond part per component (e.g. songs in a songbook), you could use <tt>[name=\currentcomponent]</tt>. == Automatical width adaption == If you want to set your note line width automatically to your current text width, try this:  -- this goes after "create temp folder" io.savedata("\LILYTEMP/texsettings.ly", "\\paper { line-width = " .. string.gsub(number.todimen(tex.dimen.textwidth),"pt","\\pt") .. " } \n") and then adapt your snippets or preamble buffer:<texcode>\include "../mysettings.ly"\include "texsettings.ly"</texcode> You must comment/delete the "line-width" setting in mysettings.ly, otherwise it doesn’t work. == Example == Here's Corner an example of placing score snippets in the body of the text, with fonts in the score & body matching: <texcode>\def\LILYTEMP{lilytemp} % name of folder for LilyPond/buffer files \def\ParseLilypondFile#1% #1 is the name of the output file {\ctxlua{thirddata.parselilypondfile("#1")}} \startluacode thirddata = thirddata or {}  -- create temp folder if missing if not lfs.isdir("\LILYTEMP") then lfs.mkdir("\LILYTEMP") end  function thirddata.parselilypondfile(name) -- include all systems (pages) -- name is like \LILYTEMP/mainfile-temp-lilypond-21.pdf logs.report("LILYPOND","name='" .. name .. "'") local scname =string.gsub(name, '%.pdf$', '-systems.count') local syco =tonumber(io.loaddata(scname)) or 0

For information how the integration works for nr = 1, syco do logs.report("LILYPOND", please check the module code and its pdf version "including system no." .. nr) context(both available from "\\setupfloats[location=right,frame=off]\\placefigure[none]{}{\\externalfigure[http://modules" ..contextgardenstring.net/tgsub(name, '%.pdf$', '-lilypond' .. nr) .. "]}"). end Unlike lilypond-book for LaTeX, the module does not use a precompiling step and thus can react to local width changes and the like, even if the lilypond code is stored in a buffer.end\stopluacode

Things that have not been implemented yet include:\usemodule[filter]* set the text font (default should be ConTeXt's bodyfont instead of LilyPond's)\defineexternalfilter[lilypond]* make lilypond call back on ConTeXt for included TeX (cf. [http:continue=yes, cache=yes, readcommand=\ParseLilypondFile, directory=\LILYTEMP//lsr, output={\externalfilterbasefile.dsi.unimi.it/LSR/Item?idpdf}, filtercommand=107])* get information from {lilypond about the baseline, for run-in music fragments* tell lilypond how much space is left on the first page* check and probably work on proper multidbackend=eps -dinclude-eps-fonts -dno-gs-load-fonts -page music* LilyPond variableso"\LILYTEMP/\externalfilterbasefile" "\externalfilterinputfile"}]

LilyPond uses fontconfig for font search. At least on MacOS X it's very restricted what kind of fonts it can use \setuplayout[textwidth=6in] % matches line- only singlewidth below\definefontfeature[main][protrusion=quality, expansion=quality]\definefontfamily[mainface][rm][Adobe Jenson Pro][features=main]\setupbodyfont[mainface,13pt]\setupalign[hz,hanging] \starttext \input zapf \startlilypond \layout{ indent=0\mm ragged-style TrueType right = ##f}\paper {myStaffSize = #20 #(including dfont). I didn't manage yet to use define fonts from the TeX (make-pango-font-tree. "Adobe Jenson Pro" "Myriad Pro" "Myriad Pro"(That doesn/ myStaffSize 20)))line-width=6\in oddFooterMarkup=##f oddHeaderMarkup=##f bookTitleMarkup = ##f scoreTitleMarkup = ##f }melody = \relative c't seem to be fontconfig's fault - it writes appropriate font cache files everywhere.){ \clef treble \key c \major \time 4/4  a b c d}

lower === LilyPond is not found ===\relative c { \clef bass \key c \major \time 2/4

You have two options:\score {* modify the module, so that lilypond is called with the whole path ( <code>C:/prog/lilypond/usr/bin/lilypond</code> for example instead of \new Voice = "mel" { \autoBeamOff \melody } \new Lyrics \lyricsto mel \text \new PianoStaff <<code \new Staff = "upper" \upper \new Staff = "lower" \lower >lilypond</code> alone).* place a <code >lilypond.bat</code> somewhere in your search path, calling c:/prog/lilypond/usr/bin/lilypond %1 %2 %3 %4 %5 %6 %7 %8 %9 \layout { \context { \Staff \RemoveEmptyStaves } }}

LilyPond 2.7.26 comes without a command line "version", at least in the MacOS X edition, i.e. the <tt>lilypond.sh\stoptext</tttexcode> script is missing.Here's it's relevant content:

#!/bin/sh ## where was the app installed? INSTALLDIR=/Applications if [ "$1" =Too many open files = "--print-appdir" ]; then echo "$INSTALLDIR/LilyPond.app/" exit 0 fi # where to put the output export LILYPOND_DESTDIR=`pwd` # run the program python "$INSTALLDIR/LilyPond.app/Contents/Resources/lilycall.py" \ "$INSTALLDIR/LilyPond.app/" $@

Save this as <tt>lilypond.sh</tt>, make it executable With bigger projects and symlink it the above setup you might run into a directory on your path"too many open files" errors, at least in older Linux, e.gOSX and other Unix-like OSes. chmod a+x lilypond.sh sudo ln -s lilypond.sh /usr/local/bin/lilypondAsk your shell about the open files maximum and set it higher: