1 ;;;; output-ps.scm -- implement Scheme output interface for PostScript
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 ;;;; Note: currently misused as testbed for titles with markup, see
9 ;;;; input/test/title-markup.ly
12 ;;;; * %% Papersize in (header ...)
13 ;;;; * text setting, kerning.
14 ;;;; * document output-interface
16 (debug-enable 'backtrace)
18 (define-module (scm output-ps)
20 #:export (define-fonts
67 (define page-number 0)
69 ;;; helper functions, not part of output interface
70 (define (escape-parentheses s)
71 (regexp-substitute/global #f "(^|[^\\])([\\(\\)])" s 'pre 1 "\\" 2 'post))
73 (define (offset-add a b)
74 (cons (+ (car a) (car b))
77 (define (ps-encoding text)
78 (escape-parentheses text))
81 (define (ps-string-def prefix key val)
82 (string-append "/" prefix (symbol->string key) " ("
83 (escape-parentheses val)
86 (define (ps-number-def prefix key val)
87 (let ((s (if (integer? val)
88 (ly:number->string val)
89 (ly:number->string (exact->inexact val)))))
90 (string-append "/" prefix (symbol->string key) " " s " def\n")))
92 (define (tex-font? fontname)
93 (equal? (substring fontname 0 2) "cm"))
97 ;;; Lily output interface, PostScript implementation --- cleanup and docme
100 ;;; Output-interface functions
101 (define (beam width slope thick blot)
103 (ly:numbers->string (list slope width thick blot)) " draw_beam" ))
106 (define (bezier-sandwich l thick)
108 (string-join (map ly:number-pair->string l) " ")
110 (ly:number->string thick)
111 " draw_bezier_sandwich"))
113 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
116 (list arch_angle arch_width arch_height height arch_thick thick))
119 (define (char font i)
121 (font-command font) " setfont "
122 "(\\" (ly:inexact->string i 8) ") show" ))
125 (string-append "% " s "\n"))
127 (define (dashed-line thick on off dx dy)
129 (ly:number->string dx) " "
130 (ly:number->string dy) " "
131 (ly:number->string thick)
133 (ly:number->string on) " "
134 (ly:number->string off)
135 " ] 0 draw_dashed_line"))
137 ;; what the heck is this interface ?
138 (define (dashed-slur thick dash l)
140 (string-join (map ly:number-pair->string l) " ")
142 (ly:number->string thick)
144 (ly:number->string dash)
147 (ly:number->string (* 10 thick))
148 " ] 0 draw_dashed_slur"))
150 (define (font-command font . override-coding)
151 (let* ((name (ly:font-filename font))
152 (magnify (ly:font-magnification font))
153 (coding-alist (ly:font-encoding-alist font))
154 (input-encoding (assoc-get 'input-name coding-alist))
155 (font-encoding (assoc-get 'output-name coding-alist))
156 (coding-command (if (null? override-coding)
157 (if (equal? input-encoding font-encoding)
159 (car override-coding))))
161 ;; FIXME: now feta stuff has feta* input-encoding (again?)
162 ;;(format (current-error-port) "FONT: ~S, ~S\n" name font-encoding)
163 ;;(format (current-error-port) "INPUT: ~S\n" input-encoding)
164 (if (and coding-command (equal? (substring coding-command 0 4) "feta"))
165 (set! coding-command #f))
168 "magfont" (string-encode-integer (hashq name 1000000))
169 "m" (string-encode-integer (inexact->exact (round (* 1000 magnify))))
170 (if (not coding-command) "" (string-append "e" coding-command)))))
172 (define (define-fonts bookpaper)
174 (define font-list (ly:bookpaper-fonts bookpaper))
175 (define (define-font command fontname scaling)
177 "/" command " { /" fontname " findfont "
178 (ly:number->string scaling) " output-scale div scalefont } bind def\n"))
180 (define (reencode-font plain encoding command)
181 (let ((coding-vector (get-coding-command encoding)))
183 plain " " coding-vector " /" command " reencode-font\n"
184 "/" command "{ /" command " findfont 1 scalefont } bind def\n")))
186 (define (guess-ps-fontname basename)
187 "We do not have the FontName, try to guess is from basename."
189 ((tex-font? basename)
190 ;; FIXME: we need proper Fontmap for the bluesky CM*, EC* fonts.
191 ;; Only the fonts that we trace in mf/ are in our own FontMap.
192 (string-append basename ".pfb"))
193 (else (string-append basename ".pfa"))
196 (define (font-load-command font)
197 (let* ((specced-font-name (ly:font-name font))
198 (fontname (if specced-font-name
200 (guess-ps-fontname (ly:font-filename font))))
202 (coding-alist (ly:font-encoding-alist font))
203 (input-encoding (assoc-get 'input-name coding-alist))
204 (font-encoding (assoc-get 'output-name coding-alist))
205 (command (font-command font))
206 ;; FIXME -- see (font-command )
207 (plain (font-command font #f))
208 (designsize (ly:font-design-size font))
209 (magnification (* (ly:font-magnification font)))
210 (ops (ly:output-def-lookup bookpaper 'outputscale))
211 (scaling (* ops magnification designsize)))
214 (define-font plain fontname scaling)
215 (if (or (equal? input-encoding font-encoding)
217 (equal? font-encoding "fetaBraces")
218 (equal? font-encoding "fetaNumber")
219 (equal? font-encoding "fetaMusic")
220 (equal? font-encoding "parmesanMusic"))
222 (reencode-font plain input-encoding command)))))
224 (define (font-load-encoding encoding)
225 (let ((filename (get-coding-filename encoding)))
226 (ly:kpathsea-gulp-file filename)))
228 (let* ((encoding-list (map (lambda (x)
229 (assoc-get 'input-name
230 (ly:font-encoding-alist x)))
232 (encodings (uniq-list (sort-list (filter string? encoding-list)
236 (apply string-append (map font-load-encoding encodings))
238 (map (lambda (x) (font-load-command x)) font-list)))))
240 (define (define-origin file line col) "")
242 (define (dot x y radius)
246 (list x y radius)) " draw_dot"))
248 (define (draw-line thick x1 y1 x2 y2)
250 "1 setlinecap 1 setlinejoin "
251 (ly:number->string thick) " setlinewidth "
252 (ly:number->string x1) " "
253 (ly:number->string y1) " moveto "
254 (ly:number->string x2) " "
255 (ly:number->string y2) " lineto stroke"))
258 "\nend-lilypond-output\n")
260 (define (ez-ball ch letter-col ball-col)
263 (ly:numbers->string (list letter-col ball-col))
264 " /Helvetica-Bold " ;; ugh
267 (define (filledbox breapth width depth height) ; FIXME : use draw_round_box
268 (string-append (ly:numbers->string (list breapth width depth height))
271 (define (header creator time-stamp paper page-count- classic?)
272 (set! page-count page-count-)
276 "%%Creator: " creator " " time-stamp "\n"
277 "%%Pages: " (number->string page-count) "\n"
278 "%%PageOrder: Ascend\n"
279 "%%DocumentPaperSizes: " (ly:output-def-lookup paper 'papersize) "\n"
280 ;;(string-append "GNU LilyPond (" (lilypond-version) "), ")
281 ;; (strftime "%c" (localtime (current-time))))
282 ;; FIXME: duplicated in every backend
285 (string-append "Engraved by LilyPond (version " (lilypond-version) ")"))
291 ;; WTF is this in every backend?
292 (define (horizontal-line x1 x2 th)
293 (draw-line th x1 0 x2 0))
295 (define (lily-def key val)
296 (let ((prefix "lilypondpaper"))
298 (substring key 0 (min (string-length prefix) (string-length key)))
300 (string-append "/" key " {" val "} bind def\n")
301 (string-append "/" key " (" val ") def\n"))))
303 (define (no-origin) "")
305 ;; FIXME: duplictates output-scopes, duplicated in other backends
306 ;; FIXME: silly interface name
307 (define (output-paper-def pd)
308 (let ((prefix "lilypondpaper"))
310 (define (scope-entry->string key var)
311 (if (variable-bound? var)
312 (let ((val (variable-ref var)))
314 ((string? val) (ps-string-def prefix key val))
315 ((number? val) (ps-number-def prefix key val))
321 (module-map scope-entry->string (ly:output-def-scope pd)))))
323 ;; FIXME: duplicated in other output backends
324 ;; FIXME: silly interface name
325 (define (output-scopes paper scopes fields basename)
326 (let ((prefix "lilypond"))
328 ;; FIXME: duplicates output-paper's scope-entry->string, mostly
329 (define (value->string val)
331 ((string? val) (string-append "(" val ")"))
332 ((symbol? val) (symbol->string val))
333 ((number? val) (number->string val))
336 (define (output-entry ps-key ly-key)
338 "/" ps-key " " (value->string (ly:output-def-lookup paper ly-key)) " def \n"))
342 "/lily-output-units 2.83464 def %% milimeter \n"
343 "% /lily-output-units 0.996264 def %% true points.\n"
344 (output-entry "staff-line-thickness" 'linethickness)
345 (output-entry "line-width" 'linewidth)
346 (output-entry "paper-size" 'papersize)
347 (output-entry "staff-height" 'staffheight) ;junkme.
349 (number->string (ly:output-def-lookup paper 'outputscale))
350 " lily-output-units mul def \n"
352 (ly:gulp-file "music-drawing-routines.ps")
353 (ly:gulp-file "lilyponddefs.ps")
358 (define (placebox x y s)
360 (ly:number->string x) " " (ly:number->string y) " { " s " } place-box\n"))
362 (define (polygon points blotdiameter)
364 (ly:numbers->string points) " "
365 (ly:number->string (/ (length points) 2)) " "
366 (ly:number->string blotdiameter)
369 (define (repeat-slash wid slope thick)
371 (ly:numbers->string (list wid slope thick))
372 " draw_repeat_slash"))
374 (define (round-filled-box x y width height blotdiam)
377 (list x y width height blotdiam)) " draw_round_box"))
379 (define (start-system origin dim)
381 "\n" (ly:number-pair->string origin) " start-system\n"
383 "set-ps-scale-to-lily-scale\n"))
385 (define (stem breapth width depth height) ; FIXME: use draw_round_box.
387 (ly:numbers->string (list breapth width depth height))
390 (define (stop-system last?)
393 (define (symmetric-x-triangle thick w h)
395 (ly:numbers->string (list h w thick))
396 " draw_symmetric_x_triangle"))
398 (define (text font s)
402 ;; ugh, we should find a better way to
403 ;; extract the hsbw for /space from the font.
405 (space-length (cdar (ly:text-dimension font "t")))
407 (add-command (lambda (x) (set! commands (cons x commands)))) )
411 "Translate space as into moveto, group the rest in words."
412 (if (and (< 0 (string-length word))
413 (equal? #\space chr))
415 (string-append "(" (ps-encoding word) ") show\n")))
417 (if (equal? #\space chr)
418 (add-command (string-append (number->string space-length) " 0.0 rmoveto ")) )
420 (if (equal? #\space chr)
422 (string-append word (make-string 1 chr))))
424 (string-append s " "))
427 (font-command font) " setfont "
428 (string-join (reverse commands)))
434 (define (zigzag-line centre? zzw zzh thick dx dy)
436 (if centre? "true" "false") " "
437 (ly:number->string zzw) " "
438 (ly:number->string zzh) " "
439 (ly:number->string thick) " "
441 (ly:number->string dx) " "
442 (ly:number->string dy)
443 " draw_zigzag_line"))
446 (set! page-number (+ page-number 1))
448 "%%Page: " (number->string page-number) " " (number->string page-count) "\n"
451 (define (stop-page last?)