1 ;;; pdftex.scm -- implement Scheme output routines for PDFTeX
3 ;;; source file of the GNU LilyPond music typesetter
4 ;;; modified from the existing tex.scm
6 ;;; (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
7 ;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 ;;; Stephen Peters <portnoy@portnoy.org>
11 ;; TODO: port this to the new module framework.
13 (define-module (scm pdftex))
15 (use-modules (scm pdf)
20 (define font-name-alist '())
22 (define this-module (current-module))
27 (define (select-font name-mag-pair)
30 (c (assoc name-mag-pair font-name-alist))
36 (display (object-type (car name-mag-pair)))
37 (display (object-type (caaar font-name-alist)))
39 (ly:warn (string-append
40 "Programming error: No such font known "
41 (car name-mag-pair) " "
42 (ly:number->string (cdr name-mag-pair))
44 "") ; issue no command
45 (string-append "\\" (cddr c)))
50 (define (beam width slope thick)
51 (embedded-pdf (list 'beam width slope thick)))
53 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
54 (embedded-pdf (list 'bracket arch_angle arch_width arch_height height arch_thick thick)))
56 (define (dashed-slur thick dash l)
57 (embedded-pdf (list 'dashed-slur thick dash l)))
60 (string-append "\\char" (inexact->string i 10) " "))
62 (define (dashed-line thick on off dx dy)
63 (embedded-pdf (list 'dashed-line thick on off dx dy)))
65 (define (font-load-command name-mag command)
67 "\\font\\" command "="
70 (ly:number->string (inexact->exact (* 1000 (cdr name-mag))))
73 (define (ez-ball c l b)
74 (embedded-pdf (list 'ez-ball c l b)))
76 (define (header-to-file fn key val)
77 (set! key (symbol->string key))
78 (if (not (equal? "-" fn))
79 (set! fn (string-append fn "." key))
82 (format "writing header field `~a' to `~a'..."
84 (if (equal? "-" fn) "<stdout>" fn)
89 (display val (open-file fn "w"))
91 (display "\n" (current-error-port))
95 (if (or (equal? (minor-version) "4.1")
96 (equal? (minor-version) "4")
97 (equal? (minor-version) "3.4"))
98 (define (embedded-pdf expr)
100 (with-output-to-string
101 (lambda () (pdf-output-expression expr (current-output-port))))))
102 (string-append "\\embeddedpdf{" ps-string "}")))
103 (define (embedded-pdf expr)
105 ((os (open-output-string)))
106 (pdf-output-expression expr os)
107 (string-append "\\embeddedpdf{" (get-output-string os) "}"))))
111 (simple-format #f "% ~a\n" s))
115 ; uncomment for some stats about lily memory
116 ; (display (gc-stats))
117 (string-append "%\n\\lilypondend\n"
121 (define (experimental-on)
124 (define (repeat-slash w a t)
125 (embedded-pdf (list 'repeat-slash w a t)))
126 (define (fontify name-mag-pair exp)
127 (string-append (select-font name-mag-pair)
131 (define (tex-encoded-fontswitch name-mag)
132 (let* ((iname-mag (car name-mag))
133 (ename-mag (cdr name-mag)))
136 (string-append "magfont"
137 (string-encode-integer
138 (hashq (car ename-mag) 1000000))
140 (string-encode-integer
141 (inexact->exact (* 1000 (cdr ename-mag)))))))))
142 (define (define-fonts internal-external-name-mag-pairs)
143 (set! font-name-alist (map tex-encoded-fontswitch
144 internal-external-name-mag-pairs))
147 (font-load-command (car x) (cdr x)))
148 (map cdr font-name-alist))))
151 (define (font-switch i)
155 (define (font-def i s)
157 "\\font" (font-switch i) "=" s "\n"))
161 "\\def\\lilyoutputscalefactor{"
162 (number->string (cond
163 ((equal? (ly:unit) "mm") (/ 72.0 25.4))
164 ((equal? (ly:unit) "pt") (/ 72.0 72.27))
165 (else (error "unknown unit" (ly:unit)))
168 "\\ifx\\lilypondstart\\undefined\n"
169 " \\input lilyponddefs\n"
171 "\\outputscale=\\lilypondpaperoutputscale \\lilypondpaperunit\n"
172 "\\lilypondpostscript\n"
173 "\\pdfcompresslevel=0"))
175 ;; Note: this string must match the string in ly2dvi.py!!!
176 (define (header creator generate)
178 "% Generated automatically by: " creator generate "\n"))
180 (define (invoke-char s i)
182 "\n\\" s "{" (inexact->string i 10) "}" ))
185 ;; need to do something to make this really safe.
187 (define (output-tex-string s)
188 (if security-paranoia
189 (regexp-substitute/global #f "\\\\" s 'pre "$\\backslash$" 'post)
192 (define (lily-def key val)
194 (regexp-substitute/global
195 #f "_" (output-tex-string key) 'pre "X" 'post)
198 (tex-val (output-tex-string val)))
199 (if (equal? (sans-surrounding-whitespace tex-val) "")
200 (string-append "\\let\\" tex-key "\\undefined\n")
201 (string-append "\\def\\" tex-key "{" tex-val "}%\n")))
203 (define (number->dim x)
205 ;;ugh ly:* in backend needs compatibility func for standalone output
206 (ly:number->string x) " \\outputscale "))
208 (define (placebox x y s)
209 (string-append "\\lyitem{"
210 (ly:number->string y) "}{"
211 (ly:number->string x) "}{"
214 (define (bezier-bow l thick)
215 (embedded-pdf (list 'bezier-bow `(quote ,l) thick)))
217 (define (bezier-sandwich l thick)
218 (embedded-pdf (list 'bezier-sandwich `(quote ,l) thick)))
220 (define (start-system wd ht)
221 (string-append "\\leavevmode\n"
222 "\\scoreshift = " (number->dim (* ht 0.5)) "\n"
223 "\\lilypondifundefined{lilypondscoreshift}%\n"
225 " {\\advance\\scoreshift by -\\lilypondscoreshift}%\n"
227 (ly:number->string wd) "}{"
228 (ly:number->string ht) "{%\n"))
230 (define (stop-system)
231 "}%\n%\n\\interscoreline\n%\n")
232 (define (stop-last-system)
235 (define (filledbox breapth width depth height)
236 (string-append "\\lyvrule{"
237 (ly:number->string (- breapth)) "}{"
238 (ly:number->string (+ breapth width)) "}{"
239 (ly:number->string depth) "}{"
240 (ly:number->string height) "}"))
242 (define (roundfilledbox x y width height blotdiam)
243 (embedded-pdf (list 'roundfilledbox x y width height blotdiam)))
246 (string-append "\\hbox{" (output-tex-string s) "}"))
248 (define (draw-line thick fx fy tx ty)
249 (embedded-pdf (list 'draw-line thick fx fy tx ty)))
251 (define (define-origin file line col)
252 (if (procedure? point-and-click)
253 (string-append "\\special{src:\\string:"
254 (point-and-click line col file)
259 ; no-origin not supported in PDFTeX
260 (define (no-origin) "")
265 (define-public (pdftex-output-expression expr port)
266 (display (eval expr this-module) port) )