1 ;;;; This file is part of LilyPond, the GNU music typesetter.
3 ;;;; Copyright (C) 1998--2010 Jan Nieuwenhuizen <janneke@gnu.org>
4 ;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
6 ;;;; LilyPond is free software: you can redistribute it and/or modify
7 ;;;; it under the terms of the GNU General Public License as published by
8 ;;;; the Free Software Foundation, either version 3 of the License, or
9 ;;;; (at your option) any later version.
11 ;;;; LilyPond is distributed in the hope that it will be useful,
12 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;;;; GNU General Public License for more details.
16 ;;;; You should have received a copy of the GNU General Public License
17 ;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
19 ;;;; Note: currently misused as testbed for titles with markup, see
20 ;;;; input/test/title-markup.ly
23 ;;;; * %% Papersize in (header ...)
24 ;;;; * text setting, kerning.
25 ;;;; * document output-interface
27 (define-module (scm output-ps)
37 ;;; helper functions, not part of output interface
41 ;; ice-9 format uses a lot of memory
42 ;; using simple-format almost halves lilypond cell usage
45 (if (or (nan? num) (inf? num))
47 (ly:warning (_ "Found infinity or nan in output. Substituting 0.0"))
48 (if (ly:get-option 'strict-infinity-checking)
51 (ly:number->string num)))
53 (define (number-pair->string4 numpair)
54 (ly:format "~4l" numpair))
57 ;;; Lily output interface, PostScript implementation --- cleanup and docme
61 (define (bezier-sandwich lst thick)
62 (ly:format "~l ~4f draw_bezier_sandwich"
63 (map number-pair->string4 lst)
67 (ly:format "~a (\\~a) show"
68 (ps-font-command font)
69 (ly:inexact->string i 8)))
71 (define (circle radius thick fill)
73 "~a ~4f ~4f draw_circle"
79 (define (dashed-line thick on off dx dy phase)
80 (ly:format "~4f ~4f ~4f [ ~4f ~4f ] ~4f draw_dashed_line"
88 ;; what the heck is this interface ?
89 (define (dashed-slur thick on off l)
90 (ly:format "~l ~4f [ ~4f ~4f ] 0 draw_dashed_slur"
91 (let ((control-points (append (cddr l) (list (car l) (cadr l)))))
92 (map number-pair->string4 control-points))
97 (define (dot x y radius)
98 (ly:format " ~4l draw_dot" (list radius x y)))
100 (define (draw-line thick x1 y1 x2 y2)
101 (ly:format "~4f ~4f ~4f ~4f ~4f draw_line"
105 (define (connected-shape pointlist thick x-scale y-scale connect fill)
106 (ly:format "~a~4f ~4f ~4f ~4f ~a ~a draw_connected_shape"
109 (apply (if (eq? (length x) 6)
110 (lambda (x1 x2 x3 x4 x5 x6)
111 (ly:format "~4f ~4f ~4f ~4f ~4f ~4f 6 "
119 (ly:format "~4f ~4f 2 " x1 x2)))
121 (reverse pointlist)))
126 (if connect "true" "false")
127 (if fill "true" "false")))
129 (define (partial-ellipse x-radius y-radius start-angle end-angle thick connect fill)
130 (ly:format "~a ~a ~4f ~4f ~4f ~4f ~4f draw_partial_ellipse"
131 (if fill "true" "false")
132 (if connect "true" "false")
139 (define (ellipse x-radius y-radius thick fill)
141 "~a ~4f ~4f ~4f draw_ellipse"
145 x-radius y-radius thick))
147 (define (embedded-ps string)
150 (define (glyph-string postscript-font-name
155 (define (glyph-spec w x y g)
156 (let ((prefix (if (string? g) "/" "")))
157 (ly:format "~4f ~4f ~4f ~a~a"
163 "/~a /CIDFont findresource ~a output-scale div scalefont setfont
167 "/~a ~a output-scale div selectfont
172 (string-join (map (lambda (x) (apply glyph-spec x))
173 (reverse w-x-y-named-glyphs)) "\n")
174 (length w-x-y-named-glyphs)))
177 (define (grob-cause offset grob)
178 (if (ly:get-option 'point-and-click)
179 (let* ((cause (ly:grob-property grob 'cause))
180 (music-origin (if (ly:stream-event? cause)
181 (ly:event-property cause 'origin))))
182 (if (ly:input-location? music-origin)
183 (let* ((location (ly:input-file-line-char-column music-origin))
184 (raw-file (car location))
185 (file (if (is-absolute? raw-file)
187 (string-append (ly-getcwd) "/" raw-file)))
188 (x-ext (ly:grob-extent grob grob X))
189 (y-ext (ly:grob-extent grob grob Y)))
191 (if (and (< 0 (interval-length x-ext))
192 (< 0 (interval-length y-ext)))
193 (ly:format "~4f ~4f ~4f ~4f (textedit://~a:~a:~a:~a) mark_URI\n"
194 (+ (car offset) (car x-ext))
195 (+ (cdr offset) (car y-ext))
196 (+ (car offset) (cdr x-ext))
197 (+ (cdr offset) (cdr y-ext))
199 ;; Backslashes are not valid
200 ;; file URI path separators.
201 (ly:string-percent-encode
202 (ly:string-substitute "\\" "/" file))
211 (define (named-glyph font glyph)
212 (ly:format "~a /~a glyphshow " ;;Why is there a space at the end?
213 (ps-font-command font)
219 (define (oval x-radius y-radius thick fill)
221 "~a ~4f ~4f ~4f draw_oval"
225 x-radius y-radius thick))
227 (define (placebox x y s)
228 (if (not (string-null? s))
229 (ly:format "~4f ~4f moveto ~a\n" x y s)
232 (define (polygon points blot-diameter filled?)
233 (ly:format "~a ~4l ~a ~4f draw_polygon"
234 (if filled? "true" "false")
236 (- (/ (length points) 2) 1)
239 (define (repeat-slash width slope beam-thickness)
240 (define (euclidean-length x y)
241 (sqrt (+ (* x x) (* y y))))
243 (let ((x-width (euclidean-length beam-thickness (/ beam-thickness slope)))
244 (height (* width slope)))
245 (ly:format "~4l draw_repeat_slash"
246 (list x-width width height))))
249 (define (round-filled-box left right bottom top blotdiam)
250 (let* ((halfblot (/ blotdiam 2))
251 (x (- halfblot left))
252 (width (- right (+ halfblot x)))
253 (y (- halfblot bottom))
254 (height (- top (+ halfblot y))))
255 (ly:format "~4l draw_round_box"
256 (list width height x y blotdiam))))
258 ;; save current color on stack and set new color
259 (define (setcolor r g b)
260 (ly:format "gsave ~4l setrgbcolor\n"
263 ;; restore color from stack
264 (define (resetcolor) "grestore\n")
266 ;; rotation around given point
267 (define (setrotation ang x y)
268 (ly:format "gsave ~4l translate ~a rotate ~4l translate\n"
271 (list (* -1 x) (* -1 y))))
273 (define (resetrotation ang x y)
279 (define (url-link url x y)
280 (ly:format "~a ~a currentpoint vector_add ~a ~a currentpoint vector_add (~a) mark_URI"
287 (define (path thickness exps)
288 (define (convert-path-exps exps)
295 ((memq head '(rmoveto rlineto lineto moveto)) 2)
296 ((memq head '(rcurveto curveto)) 6)
297 ((eq? head 'closepath) 0)
299 (args (take rest arity))
302 ;; WARNING: this is a vulnerability: a user can output arbitrary PS code here.
307 (convert-path-exps (drop rest arity))))
312 "gsave currentpoint translate 1 setlinecap ~a setlinewidth\n~l stroke grestore"
314 (convert-path-exps exps)))