;;;; source file of the GNU LilyPond music typesetter
;;;;
;;;; (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
-;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;; Note: currently misused as testbed for titles with markup, see
;;;; input/test/title-markup.ly
;; JUNK this -- see lily.scm: ly:all-output-backend-commands
#:export (unknown
- blank
+ bezier-sandwich
+ char
circle
- dot
+ comment
+ dashed-line
dashed-slur
- char
- setcolor
- resetcolor
+ dot
+ draw-line
+ embedded-ps
named-glyph
- dashed-line
- zigzag-line
- comment
- repeat-slash
+ no-origin
placebox
- bezier-sandwich
- embedded-ps
+ polygon
+ repeat-slash
+ resetcolor
+ resetrotation
round-filled-box
+ setcolor
+ setrotation
text
- polygon
- draw-line
- no-origin))
+ zigzag-line))
(use-modules (guile)
(lily))
;;; helper functions, not part of output interface
+;;;
+
+
(define (escape-parentheses s)
(regexp-substitute/global #f "(^|[^\\])([\\(\\)])" s 'pre 1 "\\" 2 'post))
(/ (round (* 10000 num)) 10000))
(define (str4 num)
- (format #f "~f" (round4 num)))
+ (if (or (nan? num) (inf? num))
+ (begin
+ (ly:warning (_ "Found infinity or nan in output. Substituting 0.0"))
+ "0.0")
+ (format #f "~f" (round4 num))))
(define (number-pair->string4 numpair)
- (format #f "~f ~f" (round4 (car numpair)) (round4 (cdr numpair))))
+ (string-append (str4 (car numpair))
+ " "
+ (str4 (cdr numpair))))
(define (numbers->string4 numlist)
(string-join (map str4 numlist) " "))
(define (circle radius thick fill)
(format #f
- "~f ~f ~a draw_circle" (round4 radius) (round4 thick)
+ "~a ~f ~f draw_circle"
(if fill
- "true "
- "false ")))
+ "true"
+ "false")
+ (round4 radius) (round4 thick)))
-(define (dashed-line thick on off dx dy)
- (format #f "~a ~a ~a [ ~a ~a ] 0 draw_dashed_line"
+(define (dashed-line thick on off dx dy phase)
+ (format #f "~a ~a ~a [ ~a ~a ] ~a draw_dashed_line"
(str4 dx)
(str4 dy)
(str4 thick)
(str4 on)
- (str4 off)))
+ (str4 off)
+ (str4 phase)
+
+ ))
;; what the heck is this interface ?
(define (dashed-slur thick on off l)
(format #f "~a ~a [ ~a ~a ] 0 draw_dashed_slur"
- (string-join (map number-pair->string4 l) " ")
+ (let ((control-points (append (cddr l) (list (car l) (cadr l)))))
+ (string-join (map number-pair->string4 control-points) " "))
(str4 thick)
(str4 on)
(str4 off)))
(define (dot x y radius)
(format #f " ~a draw_dot"
- (numbers->string4 (list x y radius))))
+ (numbers->string4 (list radius x y))))
(define (draw-line thick x1 y1 x2 y2)
- (format #f "1 setlinecap 1 setlinejoin ~a setlinewidth ~a ~a moveto ~a ~a lineto stroke"
- (str4 thick)
- (str4 x1)
- (str4 y1)
- (str4 x2)
- (str4 y2)))
+ (format #f "~a ~a ~a ~a ~a draw_line"
+ (str4 (- x2 x1))
+ (str4 (- y2 y1))
+ (str4 x1)
+ (str4 y1)
+ (str4 thick)))
(define (embedded-ps string)
string)
cid?
w-x-y-named-glyphs)
- (format #f "gsave \n/~a ~a output-scale div selectfont\n~a grestore"
+ (define (glyph-spec w x y g)
+ (let ((prefix (if (string? g) "/" "")))
+ (format #f "~f ~f ~a~a"
+ (round2 (+ w x))
+ (round2 y)
+ prefix g)))
+
+ (format #f
+ (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-append
- (apply
- string-append
- (map (lambda (item)
- (let*
- ((w (car item))
- (x (cadr item))
- (y (caddr item))
- (g (cadddr item))
- (prefix (if (string? g) "/" "")))
-
- (format #f "~f ~f ~a~a\n" (round2 (+ w x))
- (round2 y) prefix g)
- ))
- w-x-y-named-glyphs))
- (format #f "~a print_glyphs" (length w-x-y-named-glyphs)))
- ))
+ (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)
(let* ((cause (ly:grob-property grob 'cause))
- (music-origin (if (ly:music? cause)
- (ly:music-property cause 'origin))))
+ (music-origin (if (ly:stream-event? cause)
+ (ly:event-property cause 'origin))))
(if (not (ly:input-location? music-origin))
""
(let* ((location (ly:input-file-line-char-column music-origin))
(if (string=?
(substring key 0 (min (string-length prefix) (string-length key)))
prefix)
- (string-append "/" key " {" val "} bind def\n")
- (string-append "/" key " (" val ") def\n"))))
+ (format "/~a { ~a } bind def\n" key val)
+ (format "/~a (~a) def\n" key val))))
(define (named-glyph font glyph)
(format #f "~a /~a glyphshow " ;;Why is there a space at the end?
(define (placebox x y s)
(format #f
-"gsave ~a ~a translate
-0 0 moveto
-~a
-grestore\n"
-
- (str4 x)
- (str4 y)
- s))
+"~a ~a moveto
+~a\n"
+ (str4 x)
+ (str4 y)
+ s))
(define (polygon points blot-diameter filled?)
(format #f "~a ~a ~a ~a draw_polygon"
+ (if filled? "true" "false")
(numbers->string4 points)
- (str4 (/ (length points) 2))
- (str4 blot-diameter)
- (if filled? "true" "false")))
+ (number->string (- (/ (length points) 2) 1))
+ (str4 blot-diameter)))
-(define (repeat-slash wid slope thick)
- (format #f "~a draw_repeat_slash"
- (numbers->string4 (list wid slope thick))))
+(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)))
+ (format #f "~a draw_repeat_slash"
+ (numbers->string4 (list x-width width height)))))
-;; restore color from stack
-(define (resetcolor) "setrgbcolor\n")
-(define (round-filled-box x y width height blotdiam)
- (format #f "~a draw_round_box"
- (numbers->string4
- (list x y width height blotdiam))))
+(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))))
+ (format #f "~a draw_round_box"
+ (numbers->string4
+ (list width height x y blotdiam)))))
;; save current color on stack and set new color
(define (setcolor r g b)
- (format #f "currentrgbcolor ~a setrgbcolor\n"
+ (format #f "gsave ~a setrgbcolor\n"
(numbers->string4 (list r g b))))
+;; restore color from stack
+(define (resetcolor) "grestore \n")
+
+;; rotation around given point
+(define (setrotation ang x y)
+ (format "gsave ~a translate ~a rotate ~a translate\n"
+ (numbers->string4 (list x y))
+ (number->string ang)
+ (numbers->string4 (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)))
(str4 thick)
(str4 dx)
(str4 dy)))
+
+
+(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 (format "~a ~a "
+ (string-join (map (lambda (x) (format "~a " x)) args) " ")
+ head)
+ (convert-path-exps (drop rest arity))))
+ '()))
+
+
+ (format
+ "1 setlinecap ~a setlinewidth\n~a stroke"
+ thickness
+ (string-join (convert-path-exps exps) " ")))
+
projects / lilypond.git / blobdiff