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 (font-load-command name-mag command)
101 "\\font\\" command "="
104 (ly:number->string (inexact->exact (* 1000 (cdr name-mag))))
107 (define (ez-ball c l b)
108 (embedded-ps (list 'ez-ball c l b)))
110 (define (header-to-file fn key val)
111 (set! key (symbol->string key))
112 (if (not (equal? "-" fn))
113 (set! fn (string-append fn "." key))
116 (format "writing header field `~a' to `~a'..."
118 (if (equal? "-" fn) "<stdout>" fn)
120 (current-error-port))
123 (display val (open-file fn "w"))
125 (display "\n" (current-error-port))
129 (if (or (equal? (minor-version) "4.1")
130 (equal? (minor-version) "4")
131 (equal? (minor-version) "3.4"))
132 (define (embedded-ps expr)
134 (with-output-to-string
135 (lambda () (ps-output-expression expr (current-output-port))))))
136 (string-append "\\embeddedps{" ps-string "}")))
137 (define (embedded-ps expr)
139 ((os (open-output-string)))
140 (ps-output-expression expr os)
141 (string-append "\\embeddedps{" (get-output-string os) "}"))))
144 (string-append "% " s "\n"))
148 ; uncomment for some stats about lily memory
149 ; (display (gc-stats))
152 "\\EndLilyPondOutput\n"
154 "\\ifx\\LilyPondDocument\\undefined\n"
155 " \\def\\x{\\endgroup}%\n"
166 (define (experimental-on)
169 (define (repeat-slash w a t)
170 (embedded-ps (list 'repeat-slash w a t)))
172 (define (font-switch i)
176 (define (font-def i s)
178 "\\font" (font-switch i) "=" s "\n"))
182 "\\def\\scaletounit{ "
183 (number->string (cond
184 ((equal? (ly:unit) "mm") (/ 72.0 25.4))
185 ((equal? (ly:unit) "pt") (/ 72.0 72.27))
186 (else (error "unknown unit" (ly:unit)))
189 "\\special{\\string! "
191 ;; URG: ly:gulp-file: now we can't use scm output without Lily
192 (regexp-substitute/global
194 (ly:gulp-file "music-drawing-routines.ps") 'pre " %\n" 'post)
195 ;; (if (defined? 'ps-testing) "/testing true def%\n" "")
198 "\\catcode `\\@=11\n"
199 "\\expandafter\\ifx\\csname @nodocument\\endcsname \\relax\n"
200 " \\def\\x{\\endgroup}%\n"
204 " \\def\\LilyPondDocument{}\n"
205 " \\documentclass{article}\n"
206 " \\pagestyle{empty}\n"
207 ;; argh, we can't say \begin{document} because \begin is defined as
211 " \\ifdim\\lilypondpaperlinewidth\\lilypondpaperunit > 0pt\n"
212 " \\hsize\\lilypondpaperlinewidth\\lilypondpaperunit\n"
218 "\\input lilyponddefs\n"
219 "\\outputscale=\\lilypondpaperoutputscale \\lilypondpaperunit\n"
220 "\\turnOnPostScript\n"))
222 ;; Note: this string must match the string in ly2dvi.py!!!
223 (define (header creator generate)
225 "% Generated automatically by: " creator generate "\n"))
227 (define (invoke-char s i)
229 "\n\\" s "{" (inexact->string i 10) "}" ))
232 ;; need to do something to make this really safe.
234 (define-public (output-tex-string s)
235 (if security-paranoia
236 (regexp-substitute/global #f "\\\\" s 'pre "$\\backslash$" 'post)
239 (define (lily-def key val)
241 (regexp-substitute/global
242 #f "_" (output-tex-string key) 'pre "X" 'post))
244 (tex-val (output-tex-string val)))
245 (if (equal? (sans-surrounding-whitespace tex-val) "")
246 (string-append "\\let\\" tex-key "\\undefined\n")
247 (string-append "\\def\\" tex-key "{" tex-val "}%\n"))))
249 (define (number->dim x)
251 ;;ugh ly:* in backend needs compatibility func for standalone output
252 (ly:number->string x) " \\outputscale "))
254 (define (placebox x y s)
257 (number->dim y) "}{" (number->dim x) "}{" s "}%\n"))
259 (define (bezier-bow l thick)
260 (embedded-ps (list 'bezier-bow `(quote ,l) thick)))
262 (define (bezier-sandwich l thick)
263 (embedded-ps (list 'bezier-sandwich `(quote ,l) thick)))
265 (define (start-system wd ht)
266 (string-append "\\leavevmode\n"
267 "\\scoreshift = " (number->dim (* ht 0.5)) "\n"
268 "\\ifundefined{lilypondscoreshift}%\n"
270 " \\advance\\scoreshift by -\\lilypondscoreshift\n"
272 "\\hbox to " (number->dim wd) "{%\n"
273 "\\lower\\scoreshift\n"
274 "\\vbox to " (number->dim ht) "{\\hbox{%\n"))
276 (define (stop-system)
277 "}\\vss}\\hss}\\interscoreline\n")
278 (define (stop-last-system)
281 (define (filledbox breapth width depth height)
282 (if (and #f (defined? 'ps-testing))
284 (string-append (numbers->string (list breapth width depth height))
287 "\\kern" (number->dim (- breapth))
288 "\\vrule width " (number->dim (+ breapth width))
289 "depth " (number->dim depth)
290 "height " (number->dim height) " ")))
292 (define (roundfilledbox x y width height blotdiam)
293 (embedded-ps (list 'roundfilledbox x y width height blotdiam)))
296 (string-append "\\hbox{" (output-tex-string s) "}"))
298 (define (tuplet ht gapx dx dy thick dir)
299 (embedded-ps (list 'tuplet ht gapx dx dy thick dir)))
301 (define (draw-line thick fx fy tx ty)
302 (embedded-ps (list 'draw-line thick fx fy tx ty)))
304 (define (between-system-string string)
307 (define (define-origin file line col)
308 (if (procedure? point-and-click)
309 (string-append "\\special{src:" ;;; \\string ?
310 (point-and-click line col file)
315 ; no-origin not yet supported by Xdvi
316 (define (no-origin) "")
318 (define my-eval-in-module eval)
320 (if (or (equal? (minor-version) "4.1")
321 (equal? (minor-version) "4")
322 (equal? (minor-version) "3.4"))
323 (set! my-eval-in-module eval-in-module))
325 (define-public (tex-output-expression expr port)
326 (display (my-eval-in-module expr this-module) port )