ly/music-functions-init.ly

   1 % -*-Scheme-*-
   2
   3 \version "2.6.0"
   4
   5 %% need SRFI-1 filter
   6
   7 #(use-modules (srfi srfi-1))
   8
   9 applymusic =
  10 #(def-music-function (parser location func music) (procedure? ly:music?)
  11                (func music))
  12
  13 oldaddlyrics =
  14 #(def-music-function (parser location music lyrics) (ly:music? ly:music?)
  15
  16               (make-music 'OldLyricCombineMusic
  17                           'origin location
  18                           'elements (list music lyrics)))
  19
  20 grace =
  21 #(def-grace-function startGraceMusic stopGraceMusic)
  22
  23 acciaccatura =
  24 #(def-grace-function startAcciaccaturaMusic stopAcciaccaturaMusic)
  25 appoggiatura =
  26 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic)
  27
  28 partcombine =
  29 #(def-music-function (parser location part1 part2) (ly:music? ly:music?)
  30                 (make-part-combine-music (list part1 part2)))
  31
  32 autochange =
  33 #(def-music-function (parser location music) (ly:music?)
  34                (make-autochange-music music))
  35
  36 applycontext =
  37 #(def-music-function (parser location proc) (procedure?)
  38                  (make-music 'ApplyContext
  39                    'origin location
  40                    'procedure proc))
  41
  42 musicMap =
  43 #(def-music-function (parser location proc mus) (procedure? ly:music?)
  44              (music-map proc mus))
  45
  46 displayMusic =
  47 #(def-music-function (parser location music) (ly:music?)
  48                  (display-scheme-music music)
  49                  music)
  50 applyoutput =
  51 #(def-music-function (parser location proc) (procedure?)
  52                 (make-music 'ApplyOutputEvent
  53                   'origin location
  54                   'procedure proc))
  55
  56 breathe =
  57 #(def-music-function (parser location) ()
  58             (make-music 'EventChord
  59               'origin location
  60               'elements (list (make-music 'BreathingSignEvent))))
  61
  62
  63 unfoldRepeats =
  64 #(def-music-function (parser location music) (ly:music?)
  65                   (unfold-repeats music))
  66
  67 compressMusic =
  68 #(def-music-function
  69                   (parser location fraction music) (number-pair? ly:music?)
  70                   (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction))))
  71
  72 makeClusters =
  73 #(def-music-function
  74                 (parser location arg) (ly:music?)
  75                 (music-map note-to-cluster arg))
  76
  77
  78 removeWithTag =
  79 #(def-music-function
  80   (parser location tag music) (symbol? ly:music?)
  81   (music-filter
  82    (lambda (m)
  83     (let* ((tags (ly:music-property m 'tags))
  84            (res (memq tag tags)))
  85      (not res)))
  86  music))
  87
  88 keepWithTag =
  89 #(def-music-function
  90   (parser location tag music) (symbol? ly:music?)
  91   (music-filter
  92    (lambda (m)
  93     (let* ((tags (ly:music-property m 'tags))
  94            (res (memq tag tags)))
  95      (or
  96       (eq? tags '())
  97       res)))
  98    music))
  99
 100
 101 %% Todo:
 102 %% doing
 103 %% def-music-function in a .scm causes crash.
 104
 105 cueDuring =
 106 #(def-music-function
 107   (parser location what dir main-music)
 108   (string? ly:dir? ly:music?)
 109   (make-music 'QuoteMusic
 110               'element main-music
 111               'quoted-context-type 'Voice
 112               'quoted-context-id "cue"
 113               'quoted-music-name what
 114               'quoted-voice-direction dir
 115               'origin location))
 116
 117
 118 quoteDuring = #
 119 (def-music-function
 120   (parser location what main-music)
 121   (string? ly:music?)
 122   (make-music 'QuoteMusic
 123               'element main-music
 124               'quoted-music-name what
 125               'origin location))
 126
 127
 128
 129 pitchedTrill =
 130 #(def-music-function
 131    (parser location main-note secondary-note)
 132    (ly:music? ly:music?)
 133    (let*
 134        ((get-notes (lambda (ev-chord)
 135                      (filter
 136                       (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
 137                       (ly:music-property ev-chord 'elements))))
 138         (sec-note-events (get-notes secondary-note))
 139         (trill-events (filter (lambda (m) (memq 'trill-span-event (ly:music-property m 'types)))
 140                               (ly:music-property main-note 'elements)))
 141
 142         (trill-pitch
 143          (if (pair? sec-note-events)
 144              (ly:music-property (car sec-note-events) 'pitch)
 145              )))
 146
 147      (if (ly:pitch? trill-pitch)
 148          (for-each (lambda (m) (ly:music-set-property! m 'trill-pitch trill-pitch))
 149                    trill-events)
 150          (ly:warning (_ "Second argument of \\pitchedTrill should be single note.")))
 151
 152      main-note))
 153
 154 killCues =
 155 #(def-music-function
 156    (parser location music)
 157    (ly:music?)
 158    (music-map
 159     (lambda (mus)
 160       (if (string? (ly:music-property mus 'quoted-music-name))
 161           (ly:music-property mus 'element)
 162           mus)) music))
 163
 164
 165 afterGraceFraction =
 166 #(cons 6 8)
 167
 168 afterGrace =
 169 #(def-music-function
 170   (parser location main grace)
 171   (ly:music? ly:music?)
 172
 173   (let*
 174       ((main-length (ly:music-length main))
 175        (fraction  (ly:parser-lookup parser 'afterGraceFraction)))
 176
 177     (make-simultaneous-music
 178      (list
 179       main
 180       (make-sequential-music
 181        (list
 182
 183         (make-music 'SkipMusic
 184                     'duration (ly:make-duration
 185                                0 0
 186                                (* (ly:moment-main-numerator main-length)
 187                                   (car fraction))
 188                                (* (ly:moment-main-denominator main-length)
 189                                   (cdr fraction)) ))
 190         (make-music 'GraceMusic
 191                     'element grace)))))))
 192
 193 %{
 194
 195 TODO:
 196
 197 remove these from the parser, and softcode here:
 198
 199  * \tag
 200
 201 with small syntax changes, we could also do
 202
 203  * \bar
 204  *  ?
 205
 206 %}