1 ;;;; framework-svg.scm -- structure for SVG output
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004--2009 Jan Nieuwenhuizen <janneke@gnu.org>
6 ;;;; Patrick McCarty <pnorcks@gmail.com>
9 ;;;; http://www.w3.org/TR/SVG11/
10 ;;;; http://www.w3.org/TR/SVGTiny12/
13 ;;;; http://www.w3.org/TR/SVGPrint/ -- for <pageSet> and <page>
16 ;;;; * Once <pageSet> and <page> are supported by Inkscape and
17 ;;;; other user agents, add a -d option (-dsvg-multiple-page)
18 ;;;; that will create a single SVG file containing all pages
19 ;;;; of output. --pmccarty
21 (define-module (scm framework-svg))
33 (define format ergonomic-simple-format)
35 (define (svg-header paper)
36 (let* ((lookup (lambda (x) (ly:output-def-lookup paper x)))
37 (unit-length (lookup 'output-scale))
38 (output-scale (* lily-unit->mm-factor unit-length))
39 (paper-width (lookup 'paper-width))
40 (paper-height (lookup 'paper-height))
41 (page-width (* output-scale paper-width))
42 (page-height (* output-scale paper-height)))
44 `((xmlns . "http://www.w3.org/2000/svg")
45 (xmlns:xlink . "http://www.w3.org/1999/xlink")
47 (width . ,(ly:format "~2fmm" page-width))
48 (height . ,(ly:format "~2fmm" page-height))
49 (viewBox . ,(ly:format "0 0 ~4f ~4f"
50 paper-width paper-height)))))
52 (define (dump-page paper filename page page-number page-count)
53 (let* ((outputter (ly:make-paper-outputter (open-file filename "wb") 'svg))
54 (dump (lambda (str) (display str (ly:outputter-port outputter)))))
56 (dump (apply eo 'svg (svg-header paper)))
57 (dump (comment (format "Page: ~S/~S" page-number page-count)))
58 (ly:outputter-dump-stencil outputter page)
60 (ly:outputter-close outputter)))
62 (define (output-framework basename book scopes fields)
63 (let* ((paper (ly:paper-book-paper book))
64 (page-stencils (map page-stencil (ly:paper-book-pages book)))
65 (page-number (1- (ly:output-def-lookup paper 'first-page-number)))
66 (page-count (length page-stencils))
68 (file-suffix (lambda (num)
69 (if (= page-count 1) "" (format "-page-~a" num)))))
73 (set! page-number (1+ page-number))
74 (set! filename (format "~a~a.svg"
76 (file-suffix page-number)))
77 (dump-page paper filename page page-number page-count))