2 ;;; tex.scm -- implement Scheme output routines for TeX
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
7 ;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 (define-module (scm tex) )
11 (debug-enable 'backtrace)
20 (define this-module (current-module))
26 (define font-name-alist '())
28 (define (tex-encoded-fontswitch name-mag)
29 (let* ((iname-mag (car name-mag))
30 (ename-mag (cdr name-mag)))
33 (string-append "magfont"
34 (string-encode-integer
35 (hashq (car ename-mag) 1000000))
37 (string-encode-integer
38 (inexact->exact (* 1000 (cdr ename-mag)))))))))
40 (define (define-fonts internal-external-name-mag-pairs)
41 (set! font-name-alist (map tex-encoded-fontswitch
42 internal-external-name-mag-pairs))
45 (font-load-command (car x) (cdr x)))
46 (map cdr font-name-alist))))
50 ;; urg, how can exp be #unspecified? -- in sketch output
52 ;; set! returns #<unspecified> --hwn
53 (define (fontify name-mag-pair exp)
54 (string-append (select-font name-mag-pair)
61 (define (select-font name-mag-pair)
64 (c (assoc name-mag-pair font-name-alist))
70 (display (object-type (car name-mag-pair)))
71 (display (object-type (caaar font-name-alist)))
73 (ly:warn (string-append
74 "Programming error: No such font known "
75 (car name-mag-pair) " "
76 (ly:number->string (cdr name-mag-pair))
78 "") ; issue no command
79 (string-append "\\" (cddr c)))
84 (define (beam width slope thick)
85 (embedded-ps (list 'beam width slope thick)))
87 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
88 (embedded-ps (list 'bracket arch_angle arch_width arch_height height arch_thick thick)))
90 (define (dashed-slur thick dash l)
91 (embedded-ps (list 'dashed-slur thick dash `(quote ,l))))
94 (string-append "\\char" (inexact->string i 10) " "))
96 (define (dashed-line thick on off dx dy)
97 (embedded-ps (list 'dashed-line thick on off dx dy)))
99 (define (zigzag-line centre? zzw zzh thick dx dy)
100 (embedded-ps (list 'zigzag-line centre? zzw zzh thick dx dy)))
102 (define (font-load-command name-mag command)
104 "\\font\\" command "="
107 (ly:number->string (inexact->exact (* 1000 (cdr name-mag))))
110 (define (ez-ball c l b)
111 (embedded-ps (list 'ez-ball c l b)))
113 (define (header-to-file fn key val)
114 (set! key (symbol->string key))
115 (if (not (equal? "-" fn))
116 (set! fn (string-append fn "." key))
119 (format "writing header field `~a' to `~a'..."
121 (if (equal? "-" fn) "<stdout>" fn)
123 (current-error-port))
126 (display val (open-file fn "w"))
128 (display "\n" (current-error-port))
132 (if (or (equal? (minor-version) "4.1")
133 (equal? (minor-version) "4")
134 (equal? (minor-version) "3.4"))
135 (define (embedded-ps expr)
137 (with-output-to-string
138 (lambda () (ps-output-expression expr (current-output-port))))))
139 (string-append "\\embeddedps{" ps-string "}")))
140 (define (embedded-ps expr)
142 ((os (open-output-string)))
143 (ps-output-expression expr os)
144 (string-append "\\embeddedps{" (get-output-string os) "}"))))
147 (string-append "% " s "\n"))
151 ; uncomment for some stats about lily memory
152 ; (display (gc-stats))
155 "\\EndLilyPondOutput\n"
157 "\\ifx\\LilyPondDocument\\undefined\n"
158 " \\def\\x{\\endgroup}%\n"
169 (define (experimental-on)
172 (define (repeat-slash w a t)
173 (embedded-ps (list 'repeat-slash w a t)))
177 "\\def\\scaletounit{ "
178 (number->string (cond
179 ((equal? (ly:unit) "mm") (/ 72.0 25.4))
180 ((equal? (ly:unit) "pt") (/ 72.0 72.27))
181 (else (error "unknown unit" (ly:unit)))
184 "\\special{\\string! "
186 ;; URG: ly:gulp-file: now we can't use scm output without Lily
187 (regexp-substitute/global
189 (ly:gulp-file "music-drawing-routines.ps") 'pre " %\n" 'post)
190 ;; (if (defined? 'ps-testing) "/testing true def%\n" "")
193 "\\catcode `\\@=11\n"
194 "\\expandafter\\ifx\\csname @nodocument\\endcsname \\relax\n"
195 " \\def\\x{\\endgroup}%\n"
199 " \\def\\LilyPondDocument{}\n"
200 " \\documentclass{article}\n"
201 " \\pagestyle{empty}\n"
202 ;; argh, we can't say \begin{document} because \begin is defined as
206 " \\ifdim\\lilypondpaperlinewidth\\lilypondpaperunit > 0pt\n"
207 " \\hsize\\lilypondpaperlinewidth\\lilypondpaperunit\n"
213 "\\input lilyponddefs\n"
214 "\\outputscale=\\lilypondpaperoutputscale \\lilypondpaperunit\n"
215 "\\turnOnPostScript\n"))
217 ;; Note: this string must match the string in ly2dvi.py!!!
218 (define (header creator generate)
220 "% Generated automatically by: " creator generate "\n"))
222 (define (invoke-char s i)
224 "\n\\" s "{" (inexact->string i 10) "}" ))
227 ;; need to do something to make this really safe.
229 (define-public (output-tex-string s)
230 (if security-paranoia
231 (regexp-substitute/global #f "\\\\" s 'pre "$\\backslash$" 'post)
234 (define (lily-def key val)
236 (regexp-substitute/global
237 #f "_" (output-tex-string key) 'pre "X" 'post))
239 (tex-val (output-tex-string val)))
240 (if (equal? (sans-surrounding-whitespace tex-val) "")
241 (string-append "\\let\\" tex-key "\\undefined\n")
242 (string-append "\\def\\" tex-key "{" tex-val "}%\n"))))
244 (define (number->dim x)
246 ;;ugh ly:* in backend needs compatibility func for standalone output
247 (ly:number->string x) " \\outputscale "))
249 (define (placebox x y s)
252 (number->dim y) "}{" (number->dim x) "}{" s "}%\n"))
254 (define (bezier-bow l thick)
255 (embedded-ps (list 'bezier-bow `(quote ,l) thick)))
257 (define (bezier-sandwich l thick)
258 (embedded-ps (list 'bezier-sandwich `(quote ,l) thick)))
260 (define (start-system wd ht)
261 (string-append "\\leavevmode\n"
262 "\\scoreshift = " (number->dim (* ht 0.5)) "\n"
263 "\\ifundefined{lilypondscoreshift}%\n"
265 " \\advance\\scoreshift by -\\lilypondscoreshift\n"
267 "\\hbox to " (number->dim wd) "{%\n"
268 "\\lower\\scoreshift\n"
269 "\\vbox to " (number->dim ht) "{\\hbox{%\n"))
271 (define (stop-system)
272 "}\\vss}\\hss}\\interscoreline\n")
273 (define (stop-last-system)
276 (define (filledbox breapth width depth height)
277 (if (and #f (defined? 'ps-testing))
279 (string-append (numbers->string (list breapth width depth height))
282 "\\kern" (number->dim (- breapth))
283 "\\vrule width " (number->dim (+ breapth width))
284 "depth " (number->dim depth)
285 "height " (number->dim height) " ")))
287 (define (roundfilledbox x y width height blotdiam)
288 (embedded-ps (list 'roundfilledbox x y width height blotdiam)))
291 (string-append "\\hbox{" (output-tex-string s) "}"))
293 (define (tuplet ht gapx dx dy thick dir)
294 (embedded-ps (list 'tuplet ht gapx dx dy thick dir)))
296 (define (draw-line thick fx fy tx ty)
297 (embedded-ps (list 'draw-line thick fx fy tx ty)))
299 (define (between-system-string string)
302 (define (define-origin file line col)
303 (if (procedure? point-and-click)
304 (string-append "\\special{src:" ;;; \\string ?
305 (point-and-click line col file)
310 ;; no-origin not yet supported by Xdvi
311 (define (no-origin) "")
313 (define my-eval-in-module eval)
315 (if (or (equal? (minor-version) "4.1")
316 (equal? (minor-version) "4")
317 (equal? (minor-version) "3.4"))
318 (set! my-eval-in-module eval-in-module))
320 (define-public (tex-output-expression expr port)
321 (display (my-eval-in-module expr this-module) port )