1 ;;;; framework-ps.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 (define-module (scm framework-ps))
9 (use-modules (ice-9 regex)
17 (define (stderr string . rest)
18 (apply format (cons (current-error-port) (cons string rest)))
19 (force-output (current-error-port)))
21 ;;(define pdebug stderr)
22 (define (pdebug . rest) #f)
24 (define mm-to-bigpoint
27 (define-public (ps-font-command font . override-coding)
28 (let* ((name (ly:font-filename font))
29 (magnify (ly:font-magnification font))
30 (coding-alist (ly:font-encoding-alist font))
31 (input-encoding (assoc-get 'input-name coding-alist))
32 (font-encoding (assoc-get 'output-name coding-alist))
33 (coding-command (if (null? override-coding)
34 (if (equal? input-encoding font-encoding)
36 (car override-coding))))
39 "magfont" (string-encode-integer (hashq name 1000000))
40 "m" (string-encode-integer (inexact->exact (round (* 1000 magnify))))
41 (if (not coding-command) "" (string-append "e" coding-command)))))
43 (define (tex-font? fontname)
45 (equal? (substring fontname 0 2) "cm")
46 (equal? (substring fontname 0 2) "ec")))
48 (define (load-fonts bookpaper)
49 (let* ((fonts (ly:bookpaper-fonts bookpaper))
50 (font-names (uniq-list (sort (map ly:font-filename fonts) string<?)))
54 (let* ((aname (string-append x ".pfa"))
55 (apath (ly:kpathsea-expand-path aname))
57 (bpath (if (not apath)
58 (ly:kpathsea-expand-path
59 (string-append x ".pfb"))
62 (apath (ly:gulp-file apath))
63 (bpath (ly:pfb->pfa bpath))
65 (ly:warn "Can't find PFA font ~S" x)
67 (filter string? font-names))))
69 (string-join pfas "\n")))
71 (define (define-fonts bookpaper)
73 (define font-list (ly:bookpaper-fonts bookpaper))
74 (define (define-font command fontname scaling)
76 "/" command " { /" fontname " findfont "
77 (ly:number->string scaling) " output-scale div scalefont } bind def\n"))
79 (define (reencode-font plain encoding command)
80 (let ((coding-vector (get-coding-command encoding)))
82 plain " " coding-vector " /" command " reencode-font\n"
83 "/" command "{ /" command " findfont 1 scalefont } bind def\n")))
86 (define (font-load-command font)
87 (let* ((specced-font-name (ly:font-name font))
88 (fontname (if specced-font-name
90 (ly:font-filename font)))
92 (coding-alist (ly:font-encoding-alist font))
93 (input-encoding (assoc-get 'input-name coding-alist))
94 (font-encoding (assoc-get 'output-name coding-alist))
95 (command (ps-font-command font))
96 ;; FIXME -- see (ps-font-command )
97 (plain (ps-font-command font #f))
98 (designsize (ly:font-design-size font))
99 (magnification (* (ly:font-magnification font)))
100 (ops (ly:output-def-lookup bookpaper 'outputscale))
101 (scaling (* ops magnification designsize)))
103 ;; debugging: [output]encoding is broken
104 ;; found so far: coding-alist is empty!
105 (pdebug "font: ~S\n" font)
106 (pdebug "fontname: ~S\n" fontname)
107 (pdebug "input-encoding:~S\n" input-encoding)
108 (pdebug "font-encoding:~S\n" font-encoding)
110 (pdebug "coding-alist:~S\n" coding-alist)
113 (define-font plain fontname scaling)
114 (if (equal? input-encoding font-encoding)
116 (reencode-font plain input-encoding command)))))
118 (define (font-load-encoding encoding)
119 (let ((filename (get-coding-filename encoding)))
120 (ly:gulp-file (ly:kpathsea-expand-path filename))))
122 (let* ((encoding-list (map (lambda (x)
123 (assoc-get 'input-name
124 (ly:font-encoding-alist x)))
126 (encodings (uniq-list (sort-list (filter string? encoding-list)
129 (pdebug "encodings:~S\n" encodings)
131 (apply string-append (map font-load-encoding encodings))
133 (map (lambda (x) (font-load-command x)) font-list)))))
135 ;; FIXME: duplicated in other output backends
136 ;; FIXME: silly interface name
137 (define (output-variables paper)
138 ;; FIXME: duplicates output-paper's scope-entry->string, mostly
139 (define (value->string val)
141 ((string? val) (string-append "(" val ")"))
142 ((symbol? val) (symbol->string val))
143 ((number? val) (number->string val))
146 (define (output-entry ps-key ly-key)
149 (value->string (ly:output-def-lookup paper ly-key)) " def \n"))
152 "/lily-output-units " (number->string mm-to-bigpoint) " def %% milimeter \n"
153 (output-entry "staff-line-thickness" 'linethickness)
154 (output-entry "line-width" 'linewidth)
155 (output-entry "paper-size" 'papersize)
156 (output-entry "staff-height" 'staffheight) ;junkme.
158 (number->string (ly:output-def-lookup paper 'outputscale))
159 " lily-output-units mul def \n"))
161 (define (dump-page outputter page page-number page-count)
162 (ly:outputter-dump-string outputter
165 (number->string page-number) " " (number->string page-count) "\n"
166 "0 0 start-system { "
167 "set-ps-scale-to-lily-scale "
169 (ly:outputter-dump-stencil outputter page)
170 (ly:outputter-dump-string outputter "} stop-system \nshowpage\n"))
172 (define (eps-header bookpaper bbox)
173 (string-append "%!PS-Adobe-2.0 EPSF-2.0\n"
174 "%%Creator: creator time-stamp\n"
176 (string-join (map number->string bbox) " ") "\n"
179 (define (page-header bookpaper page-count)
180 (string-append "%!PS-Adobe-3.0\n"
181 "%%Creator: creator time-stamp\n"
182 "%%Pages: " (number->string page-count) "\n"
183 "%%PageOrder: Ascend\n"
184 "%%DocumentPaperSizes: "
185 (ly:output-def-lookup bookpaper 'papersize) "\n"))
187 (define (preamble bookpaper)
189 (output-variables bookpaper)
190 (ly:gulp-file "music-drawing-routines.ps")
191 (ly:gulp-file "lilyponddefs.ps")
192 (load-fonts bookpaper)
193 (define-fonts bookpaper)))
195 (define-public (output-framework outputter book scopes fields basename)
196 (let* ((bookpaper (ly:paper-book-book-paper book))
197 (pages (ly:paper-book-pages book))
199 (page-count (length pages)))
202 (ly:outputter-dump-string outputter x))
204 (page-header bookpaper page-count)
205 (preamble bookpaper)))
209 (set! page-number (1+ page-number))
210 (dump-page outputter page page-number page-count))
212 (ly:outputter-dump-string outputter "%%Trailer\n%%EOF\n")))
214 (define-public (output-preview-framework outputter book scopes fields basename)
215 (let* ((bookpaper (ly:paper-book-book-paper book))
216 (systems (ly:paper-book-lines book))
217 (scale (ly:output-def-lookup bookpaper 'outputscale ))
218 (titles (take-while ly:paper-system-title? systems))
219 (non-title (find (lambda (x)
220 (not (ly:paper-system-title? x))) systems))
222 (stack-stencils Y DOWN 0.0
223 (map ly:paper-system-stencil
224 (append titles (list non-title)))))
225 (xext (ly:stencil-extent dump-me X))
226 (yext (ly:stencil-extent dump-me Y)))
230 (ly:outputter-dump-string outputter x))
232 (eps-header bookpaper
236 (round (* x scale mm-to-bigpoint))))
237 (list (car xext) (car yext)
238 (cdr xext) (cdr yext))))
239 (preamble bookpaper)))
242 (ly:outputter-dump-string outputter
243 (string-append "0 0 start-system { "
244 "set-ps-scale-to-lily-scale "
247 (ly:outputter-dump-stencil outputter dump-me)
248 (ly:outputter-dump-string outputter "} stop-system\n%%Trailer\n%%EOF\n")))
250 (define-public (convert-to-pdf book name)
252 ((defs (ly:paper-book-book-paper book))
253 (size (ly:output-def-lookup defs 'papersize)))
255 (postscript->pdf (if (string? size) size "a4")
258 (define-public (convert-to-png book name)
260 ((defs (ly:paper-book-book-paper book))
261 (resolution (ly:output-def-lookup defs 'pngresolution)))
263 (postscript->png (if (number? resolution) resolution 90)
266 (define-public (convert-to-dvi book name)
267 (ly:warn "Can not generate DVI via the postscript back-end"))
269 (define-public (convert-to-tex book name)
270 (ly:warn "Can not generate TeX via the postscript back-end"))
272 (define-public (convert-to-ps book name)