1 ;;;; output-lib.scm -- implement Scheme output helper functions
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2003 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 ; Tablature functions, by Jiba (jiba@tuxfamily.org)
10 ; The TabNoteHead stem attachment function.
11 (define (tablature-stem-attachment-function style duration)
12 (cons 0.0 0.5) ;; UGH!
15 ; The TabNoteHead molecule callback.
16 ; Create a text molecule
17 (define-public (tablature-molecule-callback grob)
18 (let ((molecule (fontify-text
19 (ly:get-default-font grob)
20 (ly:get-grob-property grob 'text)
22 molecule ; return the molecule.
25 ; The TabNoteHead tablatureFormat callback.
26 ; Compute the text grob-property
27 (define-public (fret-number-tablature-format string tuning pitch)
29 (- (ly:pitch-semitones pitch)
31 (- string 1) ; remove 1 because list index starts at 0 and guitar string at 1.
37 (define-public (hammer-molecule-callback grob)
38 (let* ((note-collums (ly:get-grob-property grob 'note-columns))
39 (note-column1 (cadr note-collums))
40 (note-column2 (car note-collums))
41 (note1 (car (ly:get-grob-property note-column1 'note-heads)))
42 (note2 (car (ly:get-grob-property note-column2 'note-heads)))
43 (fret1 (string->number (ly:get-grob-property note1 'text)))
44 (fret2 (string->number (ly:get-grob-property note2 'text)))
45 (letter (if (< fret1 fret2) "H"
46 (if (> fret1 fret2) "P"
49 (let ((slur (Slur::brew_molecule grob))
50 (text (fontify-text (ly:get-default-font grob) letter)))
52 (let ((x (/ (- (cdr (ly:molecule-get-extent slur 0))
53 (/ (cdr (ly:molecule-get-extent text 0)) 2.0)
57 (ly:molecule-set-extent! text 0 (cons x x))
58 (ly:molecule-align-to! text 0 1)
61 (ly:molecule-combine-at-edge slur 1 1 text -0.6)
68 (define-public guitar-tunings '(4 -1 -5 -10 -15 -20))
70 ; end of tablature functions
73 (define-public (make-molecule-boxer line-thick x-padding y-padding callback)
74 "Makes a routine that adds a box around the grob parsed as argument"
75 (define (molecule-boxer grob)
79 (x-ext (interval-widen (ly:molecule-get-extent mol 0) x-padding))
80 (y-ext (interval-widen (ly:molecule-get-extent mol 1) y-padding))
81 (x-rule (make-filled-box-molecule (interval-widen x-ext line-thick)
83 (y-rule (make-filled-box-molecule (cons 0 line-thick) y-ext))
86 (set! mol (ly:molecule-combine-at-edge mol 0 1 y-rule x-padding))
87 (set! mol (ly:molecule-combine-at-edge mol 0 -1 y-rule x-padding))
88 (set! mol (ly:molecule-combine-at-edge mol 1 1 x-rule 0))
89 (set! mol (ly:molecule-combine-at-edge mol 1 -1 x-rule 0))
96 (define-public (arg->string arg)
97 (cond ((number? arg) (inexact->string arg 10))
98 ((string? arg) (string-append "\"" arg "\""))
99 ((symbol? arg) (string-append "\"" (symbol->string arg) "\""))))
101 (define-public (func name . args)
107 (map (lambda (x) (string-append " " (arg->string x))) args)))
110 ;;(define (mm-to-pt x)
111 ;; (* (/ 72.27 25.40) x))
113 ;; do nothing in .scm output
114 (define-public (comment s) "")
116 (define-public (numbers->string l)
117 (apply string-append (map ly:number->string l)))
119 ; (define (chop-decimal x) (if (< (abs x) 0.001) 0.0 x))
121 (define (number->octal-string x)
122 (let* ((n (inexact->exact x))
123 (n64 (quotient n 64))
124 (n8 (quotient (- n (* n64 64)) 8)))
128 (number->string (remainder (- n (+ (* n64 64) (* n8 8))) 8)))))
130 (define-public (inexact->string x radix)
131 (let ((n (inexact->exact x)))
132 (number->string n radix)))
135 (define-public (number-pair->string c)
136 (string-append (ly:number->string (car c)) " "
137 (ly:number->string (cdr c)) " "))
142 (make-string 1 (integer->char (+ (char->integer #\A) i)))))
144 (define (scm-scm action-name)
149 (define-public (find-notehead-symbol duration style)
151 ((xcircle) "2xcircle")
152 ((harmonic) "0neo_mensural")
154 ;; Oops, I actually would not call this "baroque", but, for
155 ;; backwards compatibility to 1.4, this is supposed to take
156 ;; brevis, longa and maxima from the neo-mensural font and all
157 ;; other note heads from the default font. -- jr
159 (string-append (number->string duration) "neo_mensural")
160 (number->string duration)))
162 (string-append (number->string duration) (symbol->string style)))
164 (string-append (number->string duration) (symbol->string style)))
166 ;; The default font in mf/feta-bolletjes.mf defines a brevis, but
167 ;; neither a longa nor a maxima. Hence let us, for the moment,
168 ;; take these from the neo-mensural font. TODO: mf/feta-bolletjes
169 ;; should define at least a longa for the default font. The longa
170 ;; should look exactly like the brevis of the default font, but
171 ;; with a stem exactly like that of the quarter note. -- jr
173 (string-append (number->string duration) "neo_mensural")
174 (number->string duration)))
176 (if (string-match "vaticana*|hufnagel*|medicaea*" (symbol->string style))
177 (symbol->string style)
178 (string-append (number->string (max 0 duration))
179 (symbol->string style))))))
182 (define (note-head-style->attachment-coordinates style duration)
183 "Return pair (X . Y), containing multipliers for the note head
184 bounding box, where to attach the stem. e.g.: X==0 means horizontally
185 centered, X==1 is at the right, X == -1 is at the left."
191 '(0.0 . 0.6) ;; neo-mensural
192 '(1.0 . 0.5) ;; default
194 ((cross) '(1.0 . 0.75))
195 ((mensural) '(0.0 . 0.6))
196 ((neo_mensural) '(0.0 . 0.6))
197 ((diamond) '(1.0 . 0.8))
198 ((transparent) '(1.0 . 1.0))
199 ((slash) '(1.0 . 1.0))
200 ((harmonic) '(1.0 0.0))
203 ;;UGH this needs to be changed: triangle is not point-symmetric, has different attachments
205 ((triangle) '(0.75 . 0.15))
208 '(0.0 . 0.6) ;; neo-mensural
209 '(1.0 . 0.5) ;; default
213 ;; this also works for easy notation.
217 (define-public (string-encode-integer i)
220 ((< i 0) (string-append "n" (string-encode-integer (- i))))
222 (make-string 1 (integer->char (+ 65 (modulo i 26))))
223 (string-encode-integer (quotient i 26))))))
226 (define-public ((every-nth-bar-number-visible n) barnum) (= 0 (modulo barnum n)))
228 (define-public ((modulo-bar-number-visible n m) barnum) (and (> barnum 1) (= m (modulo barnum n))))
230 (define-public ((set-bar-number-visibility n) tr)
231 (let* ((bn (ly:get-context-property tr 'currentBarNumber)))
232 (ly:set-context-property! tr 'barNumberVisibility (modulo-bar-number-visible n (modulo bn n)))))
234 (define-public (default-bar-number-visibility barnum) (> barnum 1))
236 ;; See documentation of Item::visibility_lambda_
237 (define-public (begin-of-line-visible d) (if (= d 1) '(#f . #f) '(#t . #t)))
238 (define-public (end-of-line-visible d) (if (= d -1) '(#f . #f) '(#t . #t)))
239 (define-public (spanbar-begin-of-line-invisible d) (if (= d -1) '(#t . #t) '(#f . #f)))
241 (define-public (all-visible d) '(#f . #f))
242 (define-public (all-invisible d) '(#t . #t))
243 (define-public (begin-of-line-invisible d) (if (= d 1) '(#t . #t) '(#f . #f)))
244 (define-public (end-of-line-invisible d) (if (= d -1) '(#t . #t) '(#f . #f)))
247 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
251 ; How should a bar line behave at a break?
253 ;; Why prepend `default-' to every scm identifier?
254 (define-public (default-break-barline glyph dir)
255 (let ((result (assoc glyph
256 '((":|:" . (":|" . "|:"))
257 ("||:" . ("||" . "|:"))
259 ("||:" . ("||" . "|:"))
261 ("|:" . ("|" . "|:"))
264 ;; hmm... should we end with a barline here?
265 (".|" . ("|" . ".|"))
268 (".|." . (".|." . ()))
270 ("empty" . (() . ()))
271 ("brace" . (() . "brace"))
272 ("bracket" . (() . "bracket"))
276 (if (equal? result #f)
277 (ly:warn (string-append "Unknown bar glyph: `" glyph "'"))
278 (index-cell (cdr result) dir))