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.
26 ; The TabNoteHead tablatureFormat callback.
27 ; Compute the text grob-property
28 (define-public (fret-number-tablature-format string tuning pitch)
30 (- (ly:pitch-semitones pitch)
32 (- string 1) ; remove 1 because list index starts at 0 and guitar string at 1.
38 (define-public (hammer-molecule-callback grob)
39 (let* ((note-collums (ly:get-grob-property grob 'note-columns))
40 (note-column1 (cadr note-collums))
41 (note-column2 (car note-collums))
42 (note1 (car (ly:get-grob-property note-column1 'note-heads)))
43 (note2 (car (ly:get-grob-property note-column2 'note-heads)))
44 (fret1 (string->number (ly:get-grob-property note1 'text)))
45 (fret2 (string->number (ly:get-grob-property note2 'text)))
46 (letter (if (< fret1 fret2) "H"
47 (if (> fret1 fret2) "P"
50 (let ((slur (Slur::brew_molecule grob))
51 (text (fontify-text (ly:get-default-font grob) letter)))
53 (let ((x (/ (- (cdr (ly:molecule-get-extent slur 0))
54 (/ (cdr (ly:molecule-get-extent text 0)) 2.0)
58 (ly:molecule-set-extent! text 0 (cons x x))
59 (ly:molecule-align-to! text 0 1)
62 (ly:molecule-combine-at-edge slur 1 1 text -0.6)
69 (define-public guitar-tunings '(4 -1 -5 -10 -15 -20))
71 ; end of tablature functions
74 (define-public (make-molecule-boxer line-thick x-padding y-padding callback)
75 "Makes a routine that adds a box around the grob parsed as argument"
76 (define (molecule-boxer grob)
80 (x-ext (interval-widen (ly:molecule-get-extent mol 0) x-padding))
81 (y-ext (interval-widen (ly:molecule-get-extent mol 1) y-padding))
82 (x-rule (make-filled-box-molecule (interval-widen x-ext line-thick)
84 (y-rule (make-filled-box-molecule (cons 0 line-thick) y-ext))
87 (set! mol (ly:molecule-combine-at-edge mol 0 1 y-rule x-padding))
88 (set! mol (ly:molecule-combine-at-edge mol 0 -1 y-rule x-padding))
89 (set! mol (ly:molecule-combine-at-edge mol 1 1 x-rule 0))
90 (set! mol (ly:molecule-combine-at-edge mol 1 -1 x-rule 0))
97 (define-public (arg->string arg)
98 (cond ((number? arg) (inexact->string arg 10))
99 ((string? arg) (string-append "\"" arg "\""))
100 ((symbol? arg) (string-append "\"" (symbol->string arg) "\""))))
102 (define-public (func name . args)
108 (map (lambda (x) (string-append " " (arg->string x))) args)))
111 ;;(define (mm-to-pt x)
112 ;; (* (/ 72.27 25.40) x))
114 ;; do nothing in .scm output
115 (define-public (comment s) "")
117 (define-public (numbers->string l)
118 (apply string-append (map ly:number->string l)))
120 ; (define (chop-decimal x) (if (< (abs x) 0.001) 0.0 x))
122 (define (number->octal-string x)
123 (let* ((n (inexact->exact x))
124 (n64 (quotient n 64))
125 (n8 (quotient (- n (* n64 64)) 8)))
129 (number->string (remainder (- n (+ (* n64 64) (* n8 8))) 8)))))
131 (define-public (inexact->string x radix)
132 (let ((n (inexact->exact x)))
133 (number->string n radix)))
136 (define-public (number-pair->string c)
137 (string-append (number->string (car c)) " "
138 (number->string (cdr c)) " "))
143 (make-string 1 (integer->char (+ (char->integer #\A) i)))))
145 (define (scm-scm action-name)
150 (define-public (find-notehead-symbol duration style)
152 ((xcircle) "2xcircle")
153 ((harmonic) "0neo_mensural")
155 ;; Oops, I actually would not call this "baroque", but, for
156 ;; backwards compatibility to 1.4, this is supposed to take
157 ;; brevis, longa and maxima from the neo-mensural font and all
158 ;; other note heads from the default font. -- jr
160 (string-append (number->string duration) "neo_mensural")
161 (number->string duration)))
163 (string-append (number->string duration) (symbol->string style)))
165 (string-append (number->string duration) (symbol->string style)))
167 ;; The default font in mf/feta-bolletjes.mf defines a brevis, but
168 ;; neither a longa nor a maxima. Hence let us, for the moment,
169 ;; take these from the neo-mensural font. TODO: mf/feta-bolletjes
170 ;; should define at least a longa for the default font. The longa
171 ;; should look exactly like the brevis of the default font, but
172 ;; with a stem exactly like that of the quarter note. -- jr
174 (string-append (number->string duration) "neo_mensural")
175 (number->string duration)))
177 (if (string-match "vaticana*|hufnagel*|medicaea*" (symbol->string style))
178 (symbol->string style)
179 (string-append (number->string (max 0 duration))
180 (symbol->string style))))))
183 (define (note-head-style->attachment-coordinates style duration)
184 "Return pair (X . Y), containing multipliers for the note head
185 bounding box, where to attach the stem. e.g.: X==0 means horizontally
186 centered, X==1 is at the right, X == -1 is at the left."
192 '(0.0 . 0.6) ;; neo-mensural
193 '(1.0 . 0.5) ;; default
195 ((cross) '(1.0 . 0.75))
196 ((mensural) '(0.0 . 0.6))
197 ((neo_mensural) '(0.0 . 0.6))
198 ((diamond) '(1.0 . 0.8))
199 ((transparent) '(1.0 . 1.0))
200 ((slash) '(1.0 . 1.0))
201 ((harmonic) '(1.0 0.0))
204 ;;UGH this needs to be changed: triangle is not point-symmetric, has different attachments
206 ((triangle) '(0.75 . 0.15))
209 '(0.0 . 0.6) ;; neo-mensural
210 '(1.0 . 0.5) ;; default
214 ;; this also works for easy notation.
218 (define-public (string-encode-integer i)
221 ((< i 0) (string-append "n" (string-encode-integer (- i))))
223 (make-string 1 (integer->char (+ 65 (modulo i 26))))
224 (string-encode-integer (quotient i 26))))))
227 (define-public ((every-nth-bar-number-visible n) barnum) (= 0 (modulo barnum n)))
229 (define-public ((modulo-bar-number-visible n m) barnum) (and (> barnum 1) (= m (modulo barnum n))))
231 (define-public ((set-bar-number-visibility n) tr)
232 (let* ((bn (ly:get-context-property tr 'currentBarNumber)))
233 (ly:set-context-property! tr 'barNumberVisibility (modulo-bar-number-visible n (modulo bn n)))))
235 (define-public (default-bar-number-visibility barnum) (> barnum 1))
237 ;; See documentation of Item::visibility_lambda_
238 (define-public (begin-of-line-visible d) (if (= d 1) '(#f . #f) '(#t . #t)))
239 (define-public (end-of-line-visible d) (if (= d -1) '(#f . #f) '(#t . #t)))
240 (define-public (spanbar-begin-of-line-invisible d) (if (= d -1) '(#t . #t) '(#f . #f)))
242 (define-public (all-visible d) '(#f . #f))
243 (define-public (all-invisible d) '(#t . #t))
244 (define-public (begin-of-line-invisible d) (if (= d 1) '(#t . #t) '(#f . #f)))
245 (define-public (end-of-line-invisible d) (if (= d -1) '(#t . #t) '(#f . #f)))
248 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
252 ; How should a bar line behave at a break?
254 ;; Why prepend `default-' to every scm identifier?
255 (define-public (default-break-barline glyph dir)
256 (let ((result (assoc glyph
257 '((":|:" . (":|" . "|:"))
258 ("||:" . ("||" . "|:"))
260 ("||:" . ("||" . "|:"))
262 ("|:" . ("|" . "|:"))
265 ;; hmm... should we end with a barline here?
266 (".|" . ("|" . ".|"))
269 (".|." . (".|." . ()))
271 ("empty" . (() . ()))
272 ("brace" . (() . "brace"))
273 ("bracket" . (() . "bracket"))
277 (if (equal? result #f)
278 (ly:warn (string-append "Unknown bar glyph: `" glyph "'"))
279 (index-cell (cdr result) dir))