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 ;; (debug-enable 'backtrace)
11 ;; The public interface is tight.
12 ;; It has to be, because user-code is evalled with this module.
14 ;; ***It should also be clean, well defined, documented and reviewed***
16 ;; To be reasonably safe, you probably do not want to use the TeX
17 ;; backend anyway, but rather the PostScript backend. You may want
18 ;; to run gs in a uml sandbox too.
21 (define-module (scm output-tex)
24 ;; JUNK this -- see lily.scm: ly:all-output-backend-commands
53 (use-modules (ice-9 regex)
69 (string-append "\\" (tex-font-command font)
70 "\\char" (ly:inexact->string i 10) " "))
75 (define (url-link url x y)
81 (define (circle radius thick)
82 (embedded-ps (list 'circle radius thick)))
84 (define (dot x y radius)
85 (embedded-ps (list 'dot x y radius)))
87 (define (embedded-ps string)
88 (embedded-ps (list 'embedded-ps string)))
90 (define (white-dot x y radius)
91 (embedded-ps (list 'white-dot x y radius)))
93 (define (beam width slope thick blot)
94 (embedded-ps (list 'beam width slope thick blot)))
96 (define (bracket arch_angle arch_width arch_height height arch_thick thick)
97 (embedded-ps (list 'bracket arch_angle arch_width arch_height height arch_thick thick)))
99 (define (dashed-slur thick on off lst)
100 (embedded-ps (list 'dashed-slur thick on off `(quote ,lst))))
102 (define (named-glyph font name)
103 (let* ((info (ly:otf-font-glyph-info font name))
104 (subfont (assoc-get 'subfont info))
105 (subidx (assoc-get 'subfont-index info)))
107 ;;(stderr "INFO: ~S\n" info)
108 ;;(stderr "FONT: ~S\n" font)
109 (if (and subfont subidx)
110 (string-append "\\" (tex-font-command-raw
112 (ly:font-magnification font))
113 "\\char" (number->string subidx))
116 (ly:warn "Can't find ~a in ~a" name font)
119 (define (dashed-line thick on off dx dy)
120 (embedded-ps (list 'dashed-line thick on off dx dy)))
122 (define (zigzag-line centre? zzw zzh thick dx dy)
123 (embedded-ps (list 'zigzag-line centre? zzw zzh thick dx dy)))
125 (define (ez-ball c lst b)
126 (embedded-ps (list 'ez-ball c lst b)))
128 (define (embedded-ps expr)
130 (with-output-to-string
131 (lambda () (ps-output-expression expr (current-output-port))))))
132 (string-append "\\embeddedps{" ps-string "}")))
134 (define (repeat-slash w a t)
135 (embedded-ps (list 'repeat-slash w a t)))
137 (define (number->dim x)
139 ;;ugh ly:* in backend needs compatibility func for standalone output
140 (ly:number->string x) " \\outputscale "))
142 (define (placebox x y s)
144 "\\lyitem{" (ly:number->string x) "}{" (ly:number->string y) "}{" s "}%\n"))
146 (define (bezier-sandwich lst thick)
147 (embedded-ps (list 'bezier-sandwich `(quote ,lst) thick)))
149 ;; WTF is this in every backend?
150 (define (horizontal-line x1 x2 th)
151 (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
153 (define (filledbox breapth width depth height)
154 (if (and #f (defined? 'ps-testing))
156 (string-append (ly:numbers->string (list breapth width depth height))
158 (string-append "\\lyvrule{"
159 (ly:number->string (- breapth)) "}{"
160 (ly:number->string (+ breapth width)) "}{"
161 (ly:number->string depth) "}{"
162 (ly:number->string height) "}")))
164 (define (round-filled-box x y width height blotdiam)
165 (embedded-ps (list 'round-filled-box x y width height blotdiam)))
167 (define (text font s)
169 "\\hbox{\\~a{}~a}" (tex-font-command font)
170 (sanitize-tex-string s)))
172 (define (white-text scale s)
173 (embedded-ps (list 'white-text scale s)))
175 (define (setcolor r g b)
176 (string-append "\\color[rgb]{"
177 (number->string r) ", "
178 (number->string g) ", "
179 (number->string b) "}"))
182 ;; The PostScript backend saves the current color
183 ;; during setcolor and restores it during resetcolor.
184 ;; We don't do that here.
186 (string-append "\\color[rgb]{0,0,0}"))
188 (define (polygon points blotdiameter)
189 (embedded-ps (list 'polygon `(quote ,points) blotdiameter)))
191 (define (draw-line thick fx fy tx ty)
192 (embedded-ps (list 'draw-line thick fx fy tx ty)))
194 ;; no-origin not yet supported by Xdvi
195 (define (no-origin) "")
197 (define (grob-cause offset grob)
198 (if (procedure? point-and-click)
199 (let* ((cause (ly:grob-property grob 'cause))
200 (music-origin (if (ly:music? cause)
201 (ly:music-property cause 'origin)))
202 (location (if (ly:input-location? music-origin)
203 (ly:input-file-line-column music-origin))))
206 (string-append "\\special{src:"
207 (apply point-and-click location) "}")