1 ;;;; tex.scm -- implement Scheme output routines for TeX
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 ;; The public interface is tight.
10 ;; It has to be, because user-code is evalled with this module.
12 ;; ***It should also be clean, well defined, documented and reviewed***
14 ;; To be reasonably safe, you probably do not want to use the TeX
15 ;; backend anyway, but rather the PostScript backend. You may want
16 ;; to run gs in a uml sandbox too.
19 (define-module (scm output-tex)
22 ;; JUNK this -- see lily.scm: ly:all-output-backend-commands
51 (use-modules (ice-9 regex)
67 (string-append "\\" (tex-font-command font)
68 "\\char" (ly:inexact->string i 10) " "))
73 (define (url-link url x y)
79 (define (circle radius thick)
80 (embedded-ps (list 'circle radius thick)))
82 (define (dot x y radius)
83 (embedded-ps (list 'dot x y radius)))
85 (define (embedded-ps string)
86 (embedded-ps (list 'embedded-ps string)))
88 (define (white-dot x y radius)
89 (embedded-ps (list 'white-dot x y radius)))
91 (define (beam width slope thick blot)
92 (embedded-ps (list 'beam width slope thick blot)))
94 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
95 (embedded-ps (list 'bracket arch_angle arch_width arch_height height arch_thick thick)))
97 (define (dashed-slur thick on off lst)
98 (embedded-ps (list 'dashed-slur thick on off `(quote ,lst))))
100 (define (named-glyph font name)
101 (let* ((info (ly:otf-font-glyph-info font name))
102 (subfont (assoc-get 'subfont info))
103 (subidx (assoc-get 'subfont-index info)))
105 ;;(stderr "INFO: ~S\n" info)
106 ;;(stderr "FONT: ~S\n" font)
107 (if (and subfont subidx)
108 (string-append "\\" (tex-font-command-raw
110 (ly:font-magnification font))
111 "\\char" (number->string subidx))
114 (ly:warn "Can't find ~a in ~a" name font)
117 (define (dashed-line thick on off dx dy)
118 (embedded-ps (list 'dashed-line thick on off dx dy)))
120 (define (zigzag-line centre? zzw zzh thick dx dy)
121 (embedded-ps (list 'zigzag-line centre? zzw zzh thick dx dy)))
123 (define (ez-ball c lst b)
124 (embedded-ps (list 'ez-ball c lst b)))
126 (define (embedded-ps expr)
128 (with-output-to-string
129 (lambda () (ps-output-expression expr (current-output-port))))))
130 (string-append "\\embeddedps{" ps-string "}")))
132 (define (repeat-slash w a t)
133 (embedded-ps (list 'repeat-slash w a t)))
135 (define (number->dim x)
137 ;;ugh ly:* in backend needs compatibility func for standalone output
138 (ly:number->string x) " \\outputscale "))
140 (define (placebox x y s)
142 "\\lyitem{" (ly:number->string x) "}{" (ly:number->string y) "}{" s "}%\n"))
144 (define (bezier-sandwich lst thick)
145 (embedded-ps (list 'bezier-sandwich `(quote ,lst) thick)))
147 ;; WTF is this in every backend?
148 (define (horizontal-line x1 x2 th)
149 (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
151 (define (filledbox breapth width depth height)
152 (if (and #f (defined? 'ps-testing))
154 (string-append (ly:numbers->string (list breapth width depth height))
156 (string-append "\\lyvrule{"
157 (ly:number->string (- breapth)) "}{"
158 (ly:number->string (+ breapth width)) "}{"
159 (ly:number->string depth) "}{"
160 (ly:number->string height) "}")))
162 (define (round-filled-box x y width height blotdiam)
163 (embedded-ps (list 'round-filled-box x y width height blotdiam)))
165 (define (text font s)
167 "\\hbox{\\~a{}~a}" (tex-font-command font)
168 (sanitize-tex-string s)))
170 (define (white-text scale s)
171 (embedded-ps (list 'white-text scale s)))
173 (define (setcolor r g b)
174 (string-append "\\color[rgb]{"
175 (number->string r) ", "
176 (number->string g) ", "
177 (number->string b) "}"))
180 ;; The PostScript backend saves the current color
181 ;; during setcolor and restores it during resetcolor.
182 ;; We don't do that here.
184 (string-append "\\color[rgb]{0,0,0}\n"))
186 (define (polygon points blotdiameter)
187 (embedded-ps (list 'polygon `(quote ,points) blotdiameter)))
189 (define (draw-line thick fx fy tx ty)
190 (embedded-ps (list 'draw-line thick fx fy tx ty)))
192 ;; no-origin not yet supported by Xdvi
193 (define (no-origin) "")
195 (define (grob-cause offset grob)
196 (if (procedure? point-and-click)
197 (let* ((cause (ly:grob-property grob 'cause))
198 (music-origin (if (ly:music? cause)
199 (ly:music-property cause 'origin)))
200 (location (if (ly:input-location? music-origin)
201 (ly:input-file-line-column music-origin))))
204 (string-append "\\special{src:"
205 (apply point-and-click location) "}")