scm/translation-functions.scm

   1 ;;;; translation-functions.scm --
   2 ;;;;
   3 ;;;;  source file of the GNU LilyPond music typesetter
   4 ;;;;
   5 ;;;; (c) 1998--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   6 ;;;;                 Jan Nieuwenhuizen <janneke@gnu.org>
   7
   8 (define-public (denominator-tuplet-formatter mus)
   9   (number->string (ly:music-property mus 'denominator)))
  10
  11 (define-public (fraction-tuplet-formatter mus)
  12   (string-append
  13    (number->string (ly:music-property mus 'denominator))
  14    ":"
  15    (number->string (ly:music-property mus 'numerator))))
  16
  17 ;; metronome marks
  18 (define-public (format-metronome-markup event context)
  19   (let* ((dur (ly:music-property event 'tempo-unit))
  20        (count (ly:music-property event 'metronome-count))
  21        (note-mark (make-smaller-markup
  22                    (make-note-by-number-markup (ly:duration-log dur)
  23                                                (ly:duration-dot-count dur)
  24                                                1))))
  25     (make-line-markup
  26      (list
  27       (make-general-align-markup Y DOWN note-mark)
  28       (make-simple-markup  "=")
  29       (make-simple-markup (number->string count))))))
  30
  31 (define-public (format-mark-alphabet mark context)
  32   (make-bold-markup (make-markalphabet-markup (1- mark))))
  33
  34 (define-public (format-mark-box-alphabet mark context)
  35   (make-bold-markup (make-box-markup (make-markalphabet-markup (1- mark)))))
  36
  37 (define-public (format-mark-letters mark context)
  38   (make-bold-markup (make-markletter-markup (1- mark))))
  39
  40 (define-public (format-mark-numbers mark context)
  41   (make-bold-markup (number->string mark)))
  42
  43 (define-public (format-mark-barnumbers mark context)
  44   (make-bold-markup (number->string (ly:context-property context 'currentBarNumber))))
  45
  46 (define-public (format-mark-box-letters mark context)
  47   (make-bold-markup (make-box-markup (make-markletter-markup (1- mark)))))
  48
  49 (define-public (format-mark-box-numbers mark context)
  50   (make-bold-markup (make-box-markup (number->string mark))))
  51
  52 (define-public (format-mark-box-barnumbers mark context)
  53   (make-bold-markup (make-box-markup
  54     (number->string (ly:context-property context 'currentBarNumber)))))
  55
  56
  57 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  58 ;; Bass figures.
  59 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  60
  61 (define-public (format-bass-figure figure event context)
  62   (let* ((fig (ly:music-property event 'figure))
  63          (fig-markup (if (number? figure)
  64                          (if (eq? #t (ly:music-property event 'diminished))
  65                              (markup #:slashed-digit figure)
  66                              (markup #:number (number->string figure 10)))
  67                          #f
  68                          ))
  69          (alt (ly:music-property event 'alteration))
  70          (alt-markup
  71           (if (number? alt)
  72               (markup
  73                       #:general-align Y DOWN #:fontsize
  74                       (if (not (= alt DOUBLE-SHARP))
  75                           -2 2)
  76                       (alteration->text-accidental-markup alt))
  77
  78               #f))
  79          (plus-markup (if (eq? #t (ly:music-property event 'augmented))
  80                           (markup #:number "+")
  81                           #f))
  82
  83          (alt-dir (ly:context-property context 'figuredBassAlterationDirection))
  84          (plus-dir (ly:context-property context 'figuredBassPlusDirection))
  85          )
  86
  87     (if (and (not fig-markup) alt-markup)
  88         (begin
  89           (set! fig-markup (markup #:left-align #:pad-around 0.3 alt-markup))
  90           (set! alt-markup #f)))
  91
  92
  93     ;; hmm, how to get figures centered between note, and
  94     ;; lone accidentals too?
  95
  96     ;;    (if (markup? fig-markup)
  97     ;;  (set!
  98     ;;   fig-markup (markup #:translate (cons 1.0 0)
  99     ;;                      #:hcenter fig-markup)))
 100
 101     (if alt-markup
 102         (set! fig-markup
 103               (markup #:put-adjacent
 104                       fig-markup X
 105                       (if (number? alt-dir)
 106                           alt-dir
 107                           LEFT)
 108                       #:pad-x 0.2 alt-markup
 109                       )))
 110
 111
 112     (if plus-markup
 113         (set! fig-markup
 114               (if fig-markup
 115                   (markup #:put-adjacent
 116                           fig-markup
 117                           X (if (number? plus-dir)
 118                                 plus-dir
 119                                 LEFT)
 120                           #:pad-x 0.2 plus-markup)
 121                   plus-markup)))
 122
 123     (if (markup? fig-markup)
 124         (markup #:fontsize -2 fig-markup)
 125         empty-markup)
 126
 127     ))
 128