Carl D. Sorensen wrote:
> LilyPond programming standards call for no tabs in the files.
>
> If you convert all the tabs to an appropriate number of spaces to get the
> indentation right, please submit a patch so we can fix this.
Here's output-ps.scm with spaces instead of tabs.
Is there a way to automate this? I just used a
find and replace approach with jEdit for this
one file. And how many files are in the source?
- Mark
;;;; output-ps.scm -- implement Scheme output interface for PostScript
;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
;;;; (c) 1998--2009 Jan Nieuwenhuizen <jann...@gnu.org>
;;;; Han-Wen Nienhuys <han...@xs4all.nl>
;;;; Note: currently misused as testbed for titles with markup, see
;;;; input/test/title-markup.ly
;;;;
;;;; TODO:
;;;; * %% Papersize in (header ...)
;;;; * text setting, kerning.
;;;; * document output-interface
(define-module (scm output-ps)
#:re-export (quote)
;; JUNK this -- see lily.scm: ly:all-output-backend-commands
#:export (unknown
bezier-sandwich
char
circle
comment
dashed-line
dashed-slur
dot
draw-line
ellipse
embedded-ps
named-glyph
no-origin
oval
placebox
polygon
repeat-slash
resetcolor
resetrotation
round-filled-box
setcolor
setrotation
text
))
(use-modules (guile)
(ice-9 regex)
(srfi srfi-1)
(srfi srfi-13)
(scm framework-ps)
(lily))
;;; helper functions, not part of output interface
;;;
;; ice-9 format uses a lot of memory
;; using simple-format almost halves lilypond cell usage
(define (str4 num)
(if (or (nan? num) (inf? num))
(begin
(ly:warning (_ "Found infinity or nan in output. Substituting 0.0"))
(if (ly:get-option 'strict-infinity-checking)
(exit 1))
"0.0")
(ly:number->string num)))
(define (number-pair->string4 numpair)
(ly:format "~4l" numpair))
;;;
;;; Lily output interface, PostScript implementation --- cleanup and docme
;;;
;; two beziers
(define (bezier-sandwich lst thick)
(ly:format "~l ~4f draw_bezier_sandwich"
(map number-pair->string4 lst)
thick))
(define (char font i)
(ly:format "~a (\\~a) show"
(ps-font-command font)
(ly:inexact->string i 8)))
(define (circle radius thick fill)
(ly:format
"~a ~4f ~4f draw_circle"
(if fill
"true"
"false")
radius thick))
(define (dashed-line thick on off dx dy phase)
(ly:format "~4f ~4f ~4f [ ~4f ~4f ] ~4f draw_dashed_line"
dx
dy
thick
on
off
phase))
;; what the heck is this interface ?
(define (dashed-slur thick on off l)
(ly:format "~l ~4f [ ~4f ~4f ] 0 draw_dashed_slur"
(let ((control-points (append (cddr l) (list (car l) (cadr l)))))
(map number-pair->string4 control-points))
thick
on
off))
(define (dot x y radius)
(ly:format " ~4l draw_dot" (list radius x y)))
(define (draw-line thick x1 y1 x2 y2)
(ly:format "~4f ~4f ~4f ~4f ~4f draw_line"
(- x2 x1) (- y2 y1)
x1 y1 thick))
(define (ellipse x-radius y-radius thick fill)
(ly:format
"~a ~4f ~4f ~4f draw_ellipse"
(if fill
"true"
"false")
x-radius y-radius thick))
(define (embedded-ps string)
string)
(define (glyph-string postscript-font-name
size
cid?
w-x-y-named-glyphs)
(define (glyph-spec w x y g)
(let ((prefix (if (string? g) "/" "")))
(ly:format "~4f ~4f ~a~a"
(+ w x) y
prefix g)))
(ly:format
(if cid?
"/~a /CIDFont findresource ~a output-scale div scalefont setfont
~a
~a print_glyphs"
"/~a ~a output-scale div selectfont
~a
~a print_glyphs")
postscript-font-name
size
(string-join (map (lambda (x) (apply glyph-spec x))
(reverse w-x-y-named-glyphs)) "\n")
(length w-x-y-named-glyphs)))
(define (grob-cause offset grob)
(if (ly:get-option 'point-and-click)
(let* ((cause (ly:grob-property grob 'cause))
(music-origin (if (ly:stream-event? cause)
(ly:event-property cause 'origin))))
(if (ly:input-location? music-origin)
(let* ((location (ly:input-file-line-char-column music-origin))
(raw-file (car location))
(file (if (is-absolute? raw-file)
raw-file
(string-append (ly-getcwd) "/" raw-file)))
(x-ext (ly:grob-extent grob grob X))
(y-ext (ly:grob-extent grob grob Y)))
(if (and (< 0 (interval-length x-ext))
(< 0 (interval-length y-ext)))
(ly:format "~4f ~4f ~4f ~4f (textedit://~a:~a:~a:~a) mark_URI\n"
(+ (car offset) (car x-ext))
(+ (cdr offset) (car y-ext))
(+ (car offset) (cdr x-ext))
(+ (cdr offset) (cdr y-ext))
;; TODO
;;full escaping.
;; backslash is interpreted by GS.
(ly:string-substitute "\\" "/"
(ly:string-substitute " " "%20" file))
(cadr location)
(caddr location)
(cadddr location))
""))
""))
""))
(define (named-glyph font glyph)
(ly:format "~a /~a glyphshow " ;;Why is there a space at the end?
(ps-font-command font)
glyph))
(define (no-origin)
"")
(define (oval x-radius y-radius thick fill)
(ly:format
"~a ~4f ~4f ~4f draw_oval"
(if fill
"true"
"false")
x-radius y-radius thick))
(define (placebox x y s)
(ly:format
"~4f ~4f moveto
~a\n" x y s))
(define (polygon points blot-diameter filled?)
(ly:format "~a ~4l ~a ~4f draw_polygon"
(if filled? "true" "false")
points
(- (/ (length points) 2) 1)
blot-diameter))
(define (repeat-slash width slope beam-thickness)
(define (euclidean-length x y)
(sqrt (+ (* x x) (* y y))))
(let ((x-width (euclidean-length beam-thickness (/ beam-thickness slope)))
(height (* width slope)))
(ly:format "~4l draw_repeat_slash"
(list x-width width height))))
(define (round-filled-box left right bottom top blotdiam)
(let* ((halfblot (/ blotdiam 2))
(x (- halfblot left))
(width (- right (+ halfblot x)))
(y (- halfblot bottom))
(height (- top (+ halfblot y))))
(ly:format "~4l draw_round_box"
(list width height x y blotdiam))))
;; save current color on stack and set new color
(define (setcolor r g b)
(ly:format "gsave ~4l setrgbcolor\n"
(list r g b)))
;; restore color from stack
(define (resetcolor) "grestore\n")
;; rotation around given point
(define (setrotation ang x y)
(ly:format "gsave ~4l translate ~a rotate ~4l translate\n"
(list x y)
ang
(list (* -1 x) (* -1 y))))
(define (resetrotation ang x y)
"grestore ")
(define (text font s)
;; (ly:warning (_ "TEXT backend-command encountered in Pango backend"))
;; (ly:warning (_ "Arguments: ~a ~a"" font str))
(let* ((space-length (cdar (ly:text-dimension font " ")))
(space-move (string-append (number->string space-length)
;; how much precision do we need here?
" 0.0 rmoveto "))
(out-vec (decode-byte-string s)))
(string-append
(ps-font-command font) " "
(string-join
(vector->list
(vector-for-each
(lambda (sym)
(if (eq? sym 'space)
space-move
(string-append "/" (symbol->string sym) " glyphshow")))
out-vec))))))
(define (unknown)
"\n unknown\n")
(define (url-link url x y)
(ly:format "~a ~a currentpoint vector_add ~a ~a currentpoint vector_add (~a) mark_URI"
(car x)
(car y)
(cdr x)
(cdr y)
url))
(define (utf-8-string pango-font-description string)
(ly:warning (_ "utf-8-string encountered in PS backend")))
(define (path thickness exps)
(define (convert-path-exps exps)
(if (pair? exps)
(let*
((head (car exps))
(rest (cdr exps))
(arity
(cond
((memq head '(rmoveto rlineto lineto moveto)) 2)
((memq head '(rcurveto curveto)) 6)
(else 1)))
(args (take rest arity))
)
;; WARNING: this is a vulnerability: a user can output arbitrary PS code here.
(cons (ly:format
"~l ~a "
args
head)
(convert-path-exps (drop rest arity))))
'()))
(ly:format
"1 setlinecap ~a setlinewidth\n~l stroke"
thickness
(convert-path-exps exps) ))
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