1 ; lily.scm -- implement Scheme output routines for TeX and PostScript
3 ; source file of the GNU LilyPond music typesetter
5 ; (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
8 ;(debug-enable 'backtrace)
14 (map (lambda (n) (string-append (number->string n ) " ")) l)))
19 (map (lambda (n) (string-append (number->string n) " ")) l)))
21 (define (chop-decimal x) (if (< (abs x) 0.001) 0.0 x))
23 (define (number->octal-string x)
24 (let* ((n (inexact->exact x))
26 (n8 (quotient (- n (* n64 64)) 8)))
30 (number->string (remainder (- n (+ (* n64 64) (* n8 8))) 8)))))
32 (define (inexact->string x radix)
33 (let ((n (inexact->exact x)))
34 (number->string n radix)))
40 (string-append (number->string (car c)) " ")
41 (string-append (number->string (cadr c)) " ")))
48 (make-string 1 (integer->char (+ (char->integer #\A) i)))
53 (define (scm-scm action-name)
56 (define security-paranoia #f)
59 ;; See documentation of Item::visibility_lambda_
60 (define (postbreak_only_visibility d) (if (= d 1) '(#f . #f) '(#t . #t)))
61 (define (non_postbreak_visibility d) (if (= d -1) '(#t . #t) '(#f . #f)))
62 (define (spanbar_non_postbreak_visibility d) (if (= d -1) '(#t . #t) '(#f . #f)))
64 ;; Score_span_bars are only visible at start of line
65 ;; i.e. if break_dir == RIGHT == 1
66 (define Span_score_bar_visibility postbreak_only_visibility)
67 (define Piano_bar_visibility postbreak_only_visibility)
68 (define Staff_group_bar_visibility postbreak_only_visibility)
75 (define (tex-scm action-name)
80 (define font-alist '())
82 (define current-font "")
83 (define (clear-fontcache)
87 (set! current-font "")))
89 (define (cached-fontname i)
92 (make-string 1 (integer->char (+ 65 i)))))
94 (define (select-font font-name)
95 (if (not (equal? font-name current-font))
97 (set! current-font font-name)
98 (define font-cmd (assoc font-name font-alist))
101 (set! font-cmd (cached-fontname font-count))
102 (set! font-alist (acons font-name font-cmd font-alist))
103 (set! font-count (+ 1 font-count))
104 (string-append "\\font" font-cmd "=" font-name font-cmd))
109 (define (beam width slope thick)
110 (embedded-ps ((ps-scm 'beam) width slope thick)))
113 (embedded-ps ((ps-scm 'bracket) h)))
115 (define (dashed-slur thick dash l)
116 (embedded-ps ((ps-scm 'dashed-slur) thick dash l)))
118 (define (crescendo w h cont)
119 (embedded-ps ((ps-scm 'crescendo) w h cont)))
122 (string-append "\\show{" (inexact->string i 10) "}"))
124 (define (decrescendo w h cont)
125 (embedded-ps ((ps-scm 'decrescendo) w h cont)))
127 (define (embedded-ps s)
128 (string-append "\\embeddedps{" s "}"))
131 "\n\\EndLilyPondOutput")
133 (define (experimental-on)
134 "\\turnOnExperimentalFeatures")
136 (define (font-switch i)
140 (define (font-def i s)
142 "\\font" (font-switch i) "=" s "\n"))
144 (define (generalmeter num den)
146 "\\generalmeter{" (number->string (inexact->exact num)) "}{" (number->string (inexact->exact den)) "}"))
148 (define (header-end) "\\turnOnPostScript")
150 (define (header creator generate)
152 "%created by: " creator generate "\n"))
154 (define (invoke-char s i)
156 "\n\\" s "{" (inexact->string i 10) "}" ))
158 (define (invoke-dim1 s d)
160 "\n\\" s "{" (number->dim d) "}"))
165 ;; need to do something to make this really safe.
167 (if security-paranoia
168 (define (output-tex-string s)
169 (regexp-substitute/global #f "\\\\" s 'pre "$\\backslash$" 'post))
170 (define (output-tex-string s) s))
172 (define (lily-def key val)
174 "\\def\\" (output-tex-string key) "{" (output-tex-string val) "}\n"))
176 (define (number->dim x)
178 (number->string (chop-decimal x)) "pt "))
180 (define (placebox x y s)
183 (number->dim y) "}{" (number->dim x) "}{" s "}"))
185 (define (pianobrace y)
187 (define minht (* 2 mudelapaperstaffheight))
188 (define maxht (* 7 minht))
190 "{\\bracefont " (char (max
192 (/ (- (min y (- maxht step)) minht) step))) "}"))
196 (define (rulesym h w)
198 "\\vrule height " (number->dim (/ h 2))
199 " depth " (number->dim (/ h 2))
200 " width " (number->dim w)
204 (define (bezier-sandwich l)
205 (embedded-ps ((ps-scm 'bezier-sandwich) l)))
214 (define (filledbox breapth width depth height)
216 "\\kern" (number->dim (- breapth))
217 "\\vrule width " (number->dim (+ breapth width))
218 "depth " (number->dim depth)
219 "height " (number->dim height) " "))
226 (string-append "\\hbox{" (output-tex-string s) "}"))
228 (define (tuplet dx dy thick dir)
229 (embedded-ps ((ps-scm 'tuplet) dx dy thick dir)))
231 (define (volta w thick last)
232 (embedded-ps ((ps-scm 'volta) w thick last)))
235 ;; The procedures listed below form the public interface of TeX-scm.
236 ;; (should merge the 2 lists)
237 (cond ((eq? action-name 'all-definitions)
240 (define bezier-sandwich ,bezier-sandwich)
241 (define bracket ,bracket)
243 (define crescendo ,crescendo)
244 (define dashed-slur ,dashed-slur)
245 (define decrescendo ,decrescendo)
246 (define end-output ,end-output)
247 (define experimental-on ,experimental-on)
248 (define filledbox ,filledbox)
249 (define font-def ,font-def)
250 (define font-switch ,font-switch)
251 (define generalmeter ,generalmeter)
252 (define header-end ,header-end)
253 (define lily-def ,lily-def)
254 (define header ,header)
255 (define invoke-char ,invoke-char)
256 (define invoke-dim1 ,invoke-dim1)
257 (define pianobrace ,pianobrace)
258 (define placebox ,placebox)
259 (define rulesym ,rulesym)
260 (define select-font ,select-font)
261 (define start-line ,start-line)
262 (define stop-line ,stop-line)
264 (define tuplet ,tuplet)
265 (define volta ,volta)
268 ((eq? action-name 'beam) beam)
269 ((eq? action-name 'tuplet) tuplet)
270 ((eq? action-name 'bracket) bracket)
271 ((eq? action-name 'crescendo) crescendo)
272 ((eq? action-name 'dashed-slur) dashed-slur)
273 ((eq? action-name 'decrescendo) decrescendo)
274 ((eq? action-name 'end-output) end-output)
275 ((eq? action-name 'experimental-on) experimental-on)
276 ((eq? action-name 'font-def) font-def)
277 ((eq? action-name 'font-switch) font-switch)
278 ((eq? action-name 'generalmeter) generalmeter)
279 ((eq? action-name 'header-end) header-end)
280 ((eq? action-name 'lily-def) lily-def)
281 ((eq? action-name 'header) header)
282 ((eq? action-name 'invoke-char) invoke-char)
283 ((eq? action-name 'invoke-dim1) invoke-dim1)
284 ((eq? action-name 'placebox) placebox)
285 ((eq? action-name 'rulesym) rulesym)
286 ((eq? action-name 'bezier-sandwich) bezier-sandwich)
287 ((eq? action-name 'start-line) start-line)
288 ((eq? action-name 'stem) stem)
289 ((eq? action-name 'stop-line) stop-line)
290 ((eq? action-name 'volta) volta)
291 (else (error "unknown tag -- PS-TEX " action-name))
296 (define (ps-scm action-name)
298 (define font-alist '())
299 (define font-count 0)
300 (define current-font "")
301 (define (clear-fontcache)
303 (set! font-alist '())
305 (set! current-font "")))
307 (define (cached-fontname i)
310 (make-string 1 (integer->char (+ 65 i)))))
312 (define (select-font font-name)
313 (if (not (equal? font-name current-font))
315 (set! current-font font-name)
316 (define font-cmd (assoc font-name font-alist))
317 (if (eq? font-cmd #f)
319 (set! font-cmd (cached-fontname font-count))
320 (set! font-alist (acons font-name font-cmd font-alist))
321 (set! font-count (+ 1 font-count))
322 (string-append "\n/" font-cmd " {/"
324 " findfont 12 scalefont setfont} bind def\n"
330 (define (beam width slope thick)
332 (numbers->string (list width slope thick)) " draw_beam " ))
335 (invoke-dim1 "draw_bracket" h))
338 (invoke-char "show" i))
340 (define (crescendo w h cont)
342 (numbers->string (list w h (inexact->exact cont)))
345 (define (dashed-slur thick dash l)
347 (apply string-append (map control->string l))
348 (number->string thick)
350 (if (> 1 dash) (number->string (- (* thick dash) thick)) "0") " "
351 (number->string (* 2 thick))
352 " ] 0 draw_dashed_slur"))
354 (define (decrescendo w h cont)
356 (numbers->string (list w h (inexact->exact cont)))
363 (define (experimental-on) "")
365 (define (filledbox kern width height depth)
366 (string-append (numbers->string (list kern width height depth))
370 (define (font-def i s)
373 (substring s 0 (- (string-length s) 4))
374 " findfont 12 scalefont setfont} bind def\n"))
376 (define (font-switch i)
377 (string-append (font i) " "))
379 (define (generalmeter num den)
380 (string-append (number->string (inexact->exact num)) " " (number->string (inexact->exact den)) " generalmeter "))
382 (define (header-end) "")
383 (define (lily-def key val)
385 "/" key " {" val "} bind def\n"))
387 (define (header creator generate)
390 "%%Creator: " creator generate "\n"))
392 (define (invoke-char s i)
394 "(\\" (inexact->string i 8) ") " s " " ))
396 (define (invoke-dim1 s d)
398 (number->string (* d (/ 72.27 72))) " " s ))
400 (define (placebox x y s)
402 (number->string x) " " (number->string y) " {" s "} placebox "))
404 (define (rulesym x y)
406 (number->string x) " "
407 (number->string y) " "
410 (define (bezier-sandwich l)
412 (apply string-append (map control->string l))
413 " draw_bezier_sandwich"))
420 (define (stem kern width height depth)
421 (string-append (numbers->string (list kern width height depth))
428 (string-append "(" s ") set" f " "))
431 (define (volta w thick last)
433 (numbers->string (list w thick (inexact->exact last)))
436 (define (tuplet dx dy thick dir)
438 (numbers->string (list dx dy thick (inexact->exact dir)))
447 (cond ((eq? action-name 'all-definitions)
450 (define tuplet ,tuplet)
451 (define bracket ,bracket)
453 (define crescendo ,crescendo)
454 (define volta ,volta)
455 (define bezier-sandwich ,bezier-sandwich)
456 (define dashed-slur ,dashed-slur)
457 (define decrescendo ,decrescendo)
458 (define end-output ,end-output)
459 (define experimental-on ,experimental-on)
460 (define filledbox ,filledbox)
461 (define font-def ,font-def)
462 (define font-switch ,font-switch)
463 (define generalmeter ,generalmeter)
464 (define header-end ,header-end)
465 (define lily-def ,lily-def)
466 (define header ,header)
467 (define invoke-char ,invoke-char)
468 (define invoke-dim1 ,invoke-dim1)
469 (define placebox ,placebox)
470 (define rulesym ,rulesym)
471 (define select-font ,select-font)
472 (define start-line ,start-line)
474 (define stop-line ,stop-line)
477 ((eq? action-name 'tuplet) tuplet)
478 ((eq? action-name 'beam) beam)
479 ((eq? action-name 'bezier-sandwich) bezier-sandwich)
480 ((eq? action-name 'bracket) bracket)
481 ((eq? action-name 'char) char)
482 ((eq? action-name 'crescendo) crescendo)
483 ((eq? action-name 'dashed-slur) dashed-slur)
484 ((eq? action-name 'decrescendo) decrescendo)
485 ((eq? action-name 'experimental-on) experimental-on)
486 ((eq? action-name 'filledbox) filledbox)
487 ((eq? action-name 'select-font) select-font)
488 ((eq? action-name 'volta) volta)
489 (else (error "unknown tag -- PS-SCM " action-name))
495 ; Russ McManus, <mcmanus@IDT.NET>
497 ; I use the following, which should definitely be provided somewhere
498 ; in guile, but isn't, AFAIK:
502 (define (hash-table-for-each fn ht)
504 ((= i (vector-length ht)))
505 (do ((alist (vector-ref ht i) (cdr alist)))
507 (fn (car (car alist)) (cdr (car alist))))))
509 (define (hash-table-map fn ht)
512 ((= i (vector-length ht)) (reverse ret-ls))
513 (do ((alist (vector-ref ht i) (cdr alist)))
515 (set! ret-ls (cons (fn (car (car alist)) (cdr (car alist))) ret-ls)))))