input/new/letter-tablature-formatting.ly

   1 \version "2.12.0"
   2
   3 \header {
   4   lsrtags = "staff-notation,fretted-strings"
   5
   6   texidoc = "Tablature can be formatted using letters instead of
   7 numbers."
   8   doctitle = "Letter tablature formatting"
   9 }
  10
  11 #(define (letter-tablature-format str context event)
  12   (let*
  13       ((tuning (ly:context-property context 'stringTunings))
  14        (pitch (ly:event-property event 'pitch)))
  15     (make-whiteout-markup
  16      (make-vcenter-markup
  17       (string (integer->char
  18          (+ (char->integer #\a)
  19             (- (ly:pitch-semitones pitch)
  20             (list-ref tuning (- str 1))))))))))
  21
  22 music = \relative c {
  23   c4 d e f
  24   g4 a b c
  25   d4 e f g
  26 }
  27
  28 <<
  29   \new Staff {
  30     \clef "G_8"
  31     \music
  32   }
  33   \new TabStaff \with {
  34     tablatureFormat = #letter-tablature-format
  35   }
  36   {
  37     \music
  38   }
  39 >>