1 ;;; ps.scm -- implement Scheme output routines for PostScript
3 ;;; source file of the GNU LilyPond music typesetter
5 ;;; (c) 1998--2001 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 (define-module (scm ps)
13 (define this-module (current-module))
15 (debug-enable 'backtrace)
17 (if (or (equal? (minor-version) "4")
18 (equal? (minor-version) "3.4"))
19 (define-public (ps-output-expression expr port)
20 (display (eval-in-module expr this-module) port))
22 (define-public (ps-output-expression expr port)
23 (display (eval expr this-module) port)))
35 (define (tex-encoded-fontswitch name-mag)
36 (let* ((iname-mag (car name-mag))
37 (ename-mag (cdr name-mag)))
40 (string-append "magfont"
41 (string-encode-integer
42 (hashq (car ename-mag) 1000000))
44 (string-encode-integer
45 (inexact->exact (* 1000 (cdr ename-mag)))))))))
47 (define (fontify name-mag-pair exp)
48 (string-append (select-font name-mag-pair)
52 (define (define-fonts internal-external-name-mag-pairs)
53 (set! font-name-alist (map tex-encoded-fontswitch
54 internal-external-name-mag-pairs))
57 (font-load-command (car x) (cdr x)))
58 (map cdr font-name-alist))))
62 ;; alist containing fontname -> fontcommand assoc (both strings)
63 (define font-alist '())
65 (define current-font "")
67 (define (select-font name-mag-pair)
70 (c (assoc name-mag-pair font-name-alist))
76 (display (object-type (car name-mag-pair)))
77 (display (object-type (caaar font-name-alist)))
79 (ly-warn (string-append
80 "Programming error: No such font known "
81 (car name-mag-pair) " "
82 (ly-number->string (cdr name-mag-pair))
85 "") ; issue no command
86 (string-append " " (cddr c) " "))
89 (define (font-load-command name-mag command)
93 (capitalize-font-name (car name-mag))
95 "20 " (ly-number->string (cdr name-mag)) " mul "
96 "output-scale div scalefont setfont } bind def "
99 ;; Ugh, the Bluesky type1 fonts for computer modern use capitalized
100 ;; postscript font names.
101 (define (capitalize-font-name name)
102 (if (equal? (substring name 0 2) "cm")
106 (define (beam width slope thick)
108 (numbers->string (list slope width thick)) " draw_beam" ))
111 (string-append "% " s "\n"))
113 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
115 (numbers->string (list arch_angle arch_width arch_height height arch_thick thick)) " draw_bracket" ))
118 (invoke-char " show" i))
122 ;; what the heck is this interface ?
123 (define (dashed-slur thick dash l)
125 (apply string-append (map control->string l))
126 (ly-number->string thick)
128 (ly-number->string dash)
130 (ly-number->string (* 10 thick)) ;UGH. 10 ?
131 " ] 0 draw_dashed_slur"))
133 (define (dashed-line thick on off dx dy)
135 (ly-number->string dx)
137 (ly-number->string dy)
139 (ly-number->string thick)
141 (ly-number->string on)
143 (ly-number->string off)
144 " ] 0 draw_dashed_line"))
146 (define (draw-line thick x1 y1 x2 y2)
151 (ly-number->string thick)
153 (ly-number->string x1)
155 (ly-number->string y1)
157 (ly-number->string x2)
159 (ly-number->string y2)
164 (define (repeat-slash wid slope thick)
165 (string-append (numbers->string (list wid slope thick))
166 " draw_repeat_slash"))
169 "\nend-lilypond-output\n")
171 (define (experimental-on) "")
173 (define (filledbox breapth width depth height)
174 (string-append (numbers->string (list breapth width depth height))
177 (define (roundfilledbox x width y height blotdiam)
180 (list x width y height blotdiam)) " draw_round_box"))
182 (define (dot x y radius)
185 (list x y radius)) " draw_dot"))
188 (define (font-def i s)
191 (substring s 0 (- (string-length s) 4))
192 " findfont 12 scalefont setfont} bind def \n"))
194 (define (font-switch i)
195 (string-append (font i) " "))
199 ;; URG: now we can't use scm output without Lily
200 (ly-gulp-file "lilyponddefs.ps")
201 " {exch pop //systemdict /run get exec} "
202 (ly-gulp-file "music-drawing-routines.ps")
203 "{ exch pop //systemdict /run get exec } "
204 ;; ps-testing is broken: global module
205 (if (defined? 'ps-testing) "\n /testing true def" "")
206 ;; "\n /testing true def"
209 (define (lily-def key val)
211 (if (string=? (substring key 0 (min (string-length "lilypondpaper") (string-length key))) "lilypondpaper")
212 (string-append "/" key " {" val "} bind def\n")
213 (string-append "/" key " (" val ") def\n")
217 (define (header creator generate)
220 "%%Creator: " creator generate "\n"))
222 (define (invoke-char s i)
224 "(\\" (inexact->string i 8) ") " s " " ))
227 (define (placebox x y s)
229 (ly-number->string x) " " (ly-number->string y) " {" s "} place-box\n"))
231 (define (bezier-sandwich l thick)
233 (apply string-append (map control->string l))
234 (ly-number->string thick)
235 " draw_bezier_sandwich "
236 (bezier-ending (list-ref l 3) (list-ref l 0) (list-ref l 5))
237 (bezier-ending (list-ref l 7) (list-ref l 0) (list-ref l 5))))
239 (define (bezier-ending z0 z1 z2)
249 (/ (sqrt (+ (* (- x1 x2) (- x1 x2)) (* (- y1 y2) (- y1 y2)))) 2)))
252 ; TODO: use HEIGHT argument
254 (define (start-system height)
257 (ly-number->string height)
259 set-ps-scale-to-lily-scale
263 (define (stem breapth width depth height)
264 (string-append (numbers->string (list breapth width depth height))
267 (define (stop-system)
270 (define (stop-last-system)
274 (string-append "(" s ") show "))
280 (define (ez-ball ch letter-col ball-col)
283 (numbers->string (list letter-col ball-col))
284 " /Helvetica-Bold " ;; ugh
287 (define (define-origin a b c ) "")
288 (define (no-origin) "")