3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2009 Marc Hohl <marc@hohlart.de>
7 ;; default tunings for common string instruments
9 (define-public guitar-tuning '(4 -1 -5 -10 -15 -20))
10 (define-public guitar-seven-string-tuning '(4 -1 -5 -10 -15 -20 -25))
11 (define-public guitar-drop-d-tuning '(4 -1 -5 -10 -15 -22))
12 (define-public guitar-open-g-tuning '(2 -1 -5 -10 -17 -22))
14 (define-public bass-tuning '(-17 -22 -27 -32))
15 (define-public bass-four-string-tuning '(-17 -22 -27 -32))
16 (define-public bass-drop-d-tuning '(-17 -22 -27 -34))
17 (define-public bass-five-string-tuning '(-17 -22 -27 -32 -37))
18 (define-public bass-six-string-tuning '(-12 -17 -22 -27 -32 -37))
20 (define-public mandolin-tuning '(16 9 2 -5))
21 ;; tunings for 5-string banjo
22 (define-public banjo-open-g-tuning '(2 -1 -5 -10 7))
23 (define-public banjo-c-tuning '(2 -1 -5 -12 7))
24 (define-public banjo-modal-tuning '(2 0 -5 -10 7))
25 (define-public banjo-open-d-tuning '(2 -3 -6 -10 9))
26 (define-public banjo-open-dm-tuning '(2 -3 -6 -10 9))
27 ;; convert 5-string banjo tuning to 4-string by removing the 5th string
28 (define-public (four-string-banjo tuning)
29 (reverse (cdr (reverse tuning))))
31 ;; for more control over glyph-name calculations,
32 ;; we use a custom callback for tab noteheads
33 ;; which will ignore 'style = 'do
34 (define-public (tab-note-head::calc-glyph-name grob)
35 (let ((style (ly:grob-property grob 'style)))
39 ;; ensure we only call notehead callback when
41 (define-public (tab-note-head::whiteout-if-style-set grob)
42 (let ((style (ly:grob-property grob 'style)))
43 (if (and (symbol? style)
45 (stencil-whiteout (ly:note-head::print grob))
46 (ly:text-interface::print grob))))
48 ;; definitions for the "moderntab" clef:
49 ;; the "moderntab" clef will be added to the list of known clefs,
50 ;; so it can be used as any other clef: \clef "moderntab"
51 (add-new-clef "moderntab" "markup.moderntab" 0 0 0)
53 ;; define sans serif-style tab-Clefs as a markup:
54 (define-builtin-markup-command (customTabClef layout props num-strings staff-space)
58 "Draw a tab clef sans-serif style."
59 (define (square x) (* x x))
60 (let* ((scale-factor (/ staff-space 1.5))
61 (font-size (- (* num-strings 1.5 scale-factor) 7))
62 (base-skip (* (square (+ (* num-strings 0.195) 0.4)) scale-factor)))
64 (interpret-markup layout props
65 (markup #:vcenter #:bold
66 #:override (cons 'font-family 'sans)
68 #:override (cons 'baseline-skip base-skip)
69 #:left-align #:center-column ("T" "A" "B")))))
71 ;; this function decides which clef to take
72 (define-public (clef::print-modern-tab-if-set grob)
73 (let ((glyph (ly:grob-property grob 'glyph)))
74 ;; which clef is wanted?
75 (if (string=? glyph "markup.moderntab")
76 ;; if it is "moderntab", we'll draw it
77 (let* ((staff-symbol (ly:grob-object grob 'staff-symbol))
78 (line-count (ly:grob-property staff-symbol 'line-count))
79 (staff-space (ly:grob-property staff-symbol 'staff-space 1)))
80 (grob-interpret-markup grob (make-customTabClef-markup line-count staff-space)))
81 ;; otherwise, we simply use the default printing routine
82 (ly:clef::print grob))))
84 ;; if stems are drawn, it is nice to have a double stem for
85 ;; (dotted) half notes to distinguish them from quarter notes:
86 (define-public (tabvoice::draw-double-stem-for-half-notes grob)
87 (let ((stem (ly:stem::print grob)))
89 ;; is the note a (dotted) half note?
90 (if (= 1 (ly:grob-property grob 'duration-log))
91 ;; yes -> draw double stem
92 (ly:stencil-combine-at-edge stem X RIGHT stem 0.5)
93 ;; no -> draw simple stem
96 ;; as default, the glissando line between fret numbers goes
97 ;; upwards, here we have a function to correct this behavior:
98 (define-public (glissando::calc-tab-extra-dy grob)
99 (let* ((original (ly:grob-original grob))
100 (left-bound (ly:spanner-bound original LEFT))
101 (right-bound (ly:spanner-bound original RIGHT))
102 (left-pitch (ly:event-property (event-cause left-bound) 'pitch))
103 (right-pitch (ly:event-property (event-cause right-bound) 'pitch)))
105 (if (< (ly:pitch-semitones right-pitch) (ly:pitch-semitones left-pitch))
109 ;; for ties in tablature, fret numbers that are tied to should be invisible,
110 ;; except for 'tied to' numbers after a line break;; these will be
111 ;; parenthesized (thanks to Neil for his solution):
112 (define-public (parenthesize-tab-note-head grob)
113 ;; Helper function to parenthesize tab noteheads,
114 ;; since we can't use ParenthesesItem at this stage
115 ;; This is basically the same as the C++ function
116 ;; in accidental.cc, converted to Scheme
117 (let* ((font (ly:grob-default-font grob))
118 (open (stencil-whiteout
119 (ly:font-get-glyph font "accidentals.leftparen")))
120 (close (stencil-whiteout
121 (ly:font-get-glyph font "accidentals.rightparen")))
122 (me (ly:text-interface::print grob)))
123 (ly:stencil-combine-at-edge
124 (ly:stencil-combine-at-edge
133 ;; ParenthesesItem doesn't work very well for TabNoteHead, since
134 ;; the parentheses are too small and clash with the staff-lines
135 ;; Define a callback for the 'stencils property which will tweak
136 ;; the parentheses' appearance for TabNoteHead
137 (define-public (parentheses-item::calc-tabstaff-parenthesis-stencils grob)
138 ;; the grob we want to parenthesize
139 (let ((victim (ly:grob-array-ref (ly:grob-object grob 'elements) 0)))
140 ;; check whether it's a notehead
141 (if (grob::has-interface victim 'note-head-interface)
143 ;; tweak appearance before retrieving
144 ;; list of stencils '(left-paren right-paren)
145 ;; get the font-size from victim (=TabNoteHead) to handle
146 ;; grace notes properly
147 (ly:grob-set-property! grob 'font-size
148 (ly:grob-property victim 'font-size))
149 (ly:grob-set-property! grob 'padding 0)
150 ;; apply whiteout to each element of the list
151 (map stencil-whiteout
152 (parentheses-item::calc-parenthesis-stencils grob)))
153 (parentheses-item::calc-parenthesis-stencils grob))))
155 ;; the handler for ties in tablature;; split ties yield in a parenthesized
156 ;; fret number, otherwise the fret number will be invisible.
157 (define-public (tie::handle-tab-tie grob)
158 (let* ((original (ly:grob-original grob))
159 (tied-tab-note-head (ly:spanner-bound grob RIGHT))
160 (siblings (if (ly:grob? original)
161 (ly:spanner-broken-into original) '())))
163 (if (and (>= (length siblings) 2)
164 (eq? (car (last-pair siblings)) grob))
165 ;; tie is split -> parenthesize
166 (ly:grob-set-property! tied-tab-note-head 'stencil
167 (lambda (grob) (parenthesize-tab-note-head grob)))
169 ;; tie is not split -> make fret number invisible
170 (ly:grob-set-property! tied-tab-note-head 'transparent #t))))
172 ;; repeat ties occur within alternatives in a repeat construct;
173 ;; the correspondig fret numbers are shown in parentheses:
174 (define-public (repeat-tie::parenthesize-tab-note-head grob)
175 (let ((tied-tab-note-head (ly:grob-object grob 'note-head)))
177 (ly:grob-set-property! tied-tab-note-head 'stencil
178 (lambda (grob) (parenthesize-tab-note-head grob)))))