-;;;; output-ps.scm -- implement Scheme output interface for PostScript
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
-;;;;
-;;;; (c) 1998--2009 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; Copyright (C) 1998--2011 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;;
+;;;; LilyPond is free software: you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation, either version 3 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; LilyPond is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
;;;; 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
- ))
-
+ #:re-export (quote))
(use-modules (guile)
(ice-9 regex)
+ (ice-9 optargs)
(srfi srfi-1)
(srfi srfi-13)
(scm framework-ps)
(define (str4 num)
(if (or (nan? num) (inf? num))
(begin
- (ly:warning (_ "Found infinity or nan in output. Substituting 0.0"))
+ (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))
+ (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"
+ (ly:format "~l ~4f draw_bezier_sandwich"
(map number-pair->string4 lst)
thick))
(- x2 x1) (- y2 y1)
x1 y1 thick))
+(define (partial-ellipse x-radius y-radius start-angle end-angle thick connect fill)
+ (ly:format "~a ~a ~4f ~4f ~4f ~4f ~4f draw_partial_ellipse"
+ (if fill "true" "false")
+ (if connect "true" "false")
+ x-radius
+ y-radius
+ start-angle
+ end-angle
+ thick))
+
(define (ellipse x-radius y-radius thick fill)
(ly:format
"~a ~4f ~4f ~4f draw_ellipse"
(ly:format "~4f ~4f ~4f ~a~a"
w x y
prefix g)))
-
- (ly:format
+
+ (ly:format
(if cid?
"/~a /CIDFont findresource ~a output-scale div scalefont setfont
~a
(+ (car offset) (cdr x-ext))
(+ (cdr offset) (cdr y-ext))
- ;; TODO
- ;;full escaping.
+ ;; Backslashes are not valid
+ ;; file URI path separators.
+ (ly:string-percent-encode
+ (ly:string-substitute "\\" "/" file))
- ;; backslash is interpreted by GS.
- (ly:string-substitute "\\" "/"
- (ly:string-substitute " " "%20" file))
(cadr location)
(caddr location)
(cadddr location))
"false")
x-radius y-radius thick))
-(define (placebox x y s)
- (ly:format
-"~4f ~4f moveto
-~a\n" x y s))
+(define (placebox x y s)
+ (if (not (string-null? 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"
(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)
+(define (unknown)
"\n unknown\n")
(define (url-link url x y)
(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 (page-link page-no x y)
+ (if (number? page-no)
+ (ly:format "~a ~a currentpoint vector_add ~a ~a currentpoint vector_add ~a mark_page_link"
+ (car x)
+ (car y)
+ (cdr x)
+ (cdr y)
+ page-no)
+ ""))
+
+(define* (path thickness exps #:optional (cap 'round) (join 'round) (fill? #f))
(define (convert-path-exps exps)
(if (pair? exps)
(let*
((head (car exps))
(rest (cdr exps))
- (arity
+ (arity
(cond
((memq head '(rmoveto rlineto lineto moveto)) 2)
((memq head '(rcurveto curveto)) 6)
+ ((eq? head 'closepath) 0)
(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
+ args
head)
(convert-path-exps (drop rest arity))))
'()))
-
-
- (ly:format
- "1 setlinecap ~a setlinewidth\n~l stroke"
- thickness
- (convert-path-exps exps) ))
-
+
+ (let ((cap-numeric (case cap ((butt) 0) ((round) 1) ((square) 2)
+ (else (begin
+ (ly:warning (_ "unknown line-cap-style: ~S")
+ (symbol->string cap))
+ 1))))
+ (join-numeric (case join ((miter) 0) ((round) 1) ((bevel) 2)
+ (else (begin
+ (ly:warning (_ "unknown line-join-style: ~S")
+ (symbol->string join))
+ 1)))))
+ (ly:format
+ "gsave currentpoint translate
+~a setlinecap ~a setlinejoin ~a setlinewidth
+~l gsave stroke grestore ~a grestore"
+ cap-numeric
+ join-numeric
+ thickness
+ (convert-path-exps exps)
+ (if fill? "fill" ""))))
+
+(define (setscale x y)
+ (ly:format "gsave ~4l scale\n"
+ (list x y)))
+
+(define (resetscale)
+ "grestore\n")
projects / lilypond.git / blobdiff