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|
;;;; tex.scm -- implement Scheme output routines for TeX
;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
;;;; (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
;; The public interface is tight.
;; It has to be, because user-code is evalled with this module.
;; ***It should also be clean, well defined, documented and reviewed***
;; To be reasonably safe, you probably do not want to use the TeX
;; backend anyway, but rather the PostScript backend. You may want
;; to run gs in a uml sandbox too.
(define-module (scm output-tex)
#:re-export (quote)
;; JUNK this -- see lily.scm: ly:all-output-backend-commands
#:export (unknown
blank
circle
dot
dashed-slur
named-glyph
dashed-line
zigzag-line
comment
repeat-slash
placebox
bezier-sandwich
round-filled-box
text
setcolor
resetcolor
polygon
draw-line
no-origin
grob-cause))
(use-modules (ice-9 regex)
(ice-9 string-fun)
(ice-9 format)
(guile)
(srfi srfi-13)
(scm framework-tex)
(lily))
;;;;;;;;
;;;;;;;; DOCUMENT ME!
;;;;;;;;
(define (char font i)
(string-append "\\" (tex-font-command font)
"\\char" (ly:inexact->string i 10) " "))
(define (unknown)
"%\n\\unknown\n")
(define (url-link url x y)
"")
(define (blank)
"")
(define (circle radius thick)
(embedded-ps (list 'circle radius thick)))
(define (dot x y radius)
(embedded-ps (list 'dot x y radius)))
(define (embedded-ps string)
(embedded-ps (list 'embedded-ps string)))
(define (dashed-slur thick on off lst)
(embedded-ps (list 'dashed-slur thick on off `(quote ,lst))))
(define (named-glyph font name)
(let* ((info (ly:otf-font-glyph-info font name))
(subfont (assoc-get 'subfont info))
(subidx (assoc-get 'subfont-index info)))
;;(stderr "INFO: ~S\n" info)
;;(stderr "FONT: ~S\n" font)
(if (and subfont subidx)
(string-append "\\" (tex-font-command-raw
subfont
(ly:font-magnification font))
"\\char" (number->string subidx))
(begin
(ly:warning (_ "can't find ~a in ~a" name font))
""))))
(define (dashed-line thick on off dx dy)
(embedded-ps (list 'dashed-line thick on off dx dy)))
(define (zigzag-line centre? zzw zzh thick dx dy)
(embedded-ps (list 'zigzag-line centre? zzw zzh thick dx dy)))
(define (embedded-ps expr)
(let ((ps-string
(with-output-to-string
(lambda () (ps-output-expression expr (current-output-port))))))
(string-append "\\embeddedps{" ps-string "}")))
(define (repeat-slash w a t)
(embedded-ps (list 'repeat-slash w a t)))
(define (number->dim x)
(string-append
;;ugh ly:* in backend needs compatibility func for standalone output
(ly:number->string x) " \\output-scale "))
(define (placebox x y s)
(string-append
"\\lyitem{" (ly:number->string x) "}{" (ly:number->string y) "}{" s "}%\n"))
(define (bezier-sandwich lst thick)
(embedded-ps (list 'bezier-sandwich `(quote ,lst) thick)))
(define (round-filled-box x y width height blotdiam)
(embedded-ps (list 'round-filled-box x y width height blotdiam)))
(define (text font s)
(format
"\\hbox{\\~a{}~a}" (tex-font-command font)
(sanitize-tex-string s)))
(define (setcolor r g b)
(string-append "\\color[rgb]{"
(number->string r) ", "
(number->string g) ", "
(number->string b) "}"))
;; FIXME
;; The PostScript backend saves the current color
;; during setcolor and restores it during resetcolor.
;; We don't do that here.
(define (resetcolor)
(string-append "\\color[rgb]{0,0,0}\n"))
(define (polygon points blot-diameter fill)
(embedded-ps (list 'polygon `(quote ,points) blot-diameter fill)))
(define (draw-line thick fx fy tx ty)
(embedded-ps (list 'draw-line thick fx fy tx ty)))
;; no-origin not yet supported by Xdvi
(define (no-origin) "")
(define-public (line-location file line col)
"Print an input location, without column number ."
(string-append (number->string line) " " file))
(define-public point-and-click #f)
(define (grob-cause offset grob)
(define (line-column-location file line col)
"Print an input location, including column number ."
(string-append (number->string line) ":"
(number->string col) " " file))
(if (procedure? point-and-click)
(let* ((cause (ly:grob-property grob 'cause))
(music-origin (if (ly:stream-event? cause)
(ly:event-property cause 'origin)))
(location (if (ly:input-location? music-origin)
(ly:input-file-line-column music-origin))))
(if (pair? location)
;;; \\string ?
(string-append "\\special{src:"
(line-column-location location) "}")
""))
""))
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