-;;;; output-svg.scm -- implement Scheme output routines for SVG1
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
+;;;; Copyright (C) 2002--2011 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; Patrick McCarty <pnorcks@gmail.com>
;;;;
-;;;; (c) 2002--2009 Jan Nieuwenhuizen <janneke@gnu.org>
-
-;;;; http://www.w3.org/TR/SVG11
-;;;; http://www.w3.org/TR/SVG12/ -- page, pageSet in draft
-
-;;;; TODO:
-;;;; * .cff MUST NOT be in fc's fontpath.
-;;;; - workaround: remove mf/out from ~/.fonts.conf,
-;;;; instead add ~/.fonts and symlink all /mf/out/*otf there.
-;;;; - bug in fontconfig/freetype/pango?
-
-;;;; * inkscape page/pageSet support
-;;;; * inkscape SVG-font support
-;;;; - use fontconfig/fc-cache for now, see output-gnome.scm
+;;;; 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/>.
(define-module (scm output-svg))
(define this-module (current-module))
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; globals
+
+;;; set by framework-gnome.scm
+(define paper #f)
+
(use-modules
- (guile)
- (ice-9 regex)
- (ice-9 format)
- (lily)
- (srfi srfi-1)
- (srfi srfi-13))
+ (guile)
+ (ice-9 regex)
+ (ice-9 format)
+ (ice-9 optargs)
+ (lily)
+ (srfi srfi-1)
+ (srfi srfi-13))
(define fancy-format format)
(define format ergonomic-simple-format)
-(define lily-unit-length 1.75)
+(define lily-unit-length 1.7573)
(define (dispatch expr)
(let ((keyword (car expr)))
- (cond
- ((eq? keyword 'some-func) "")
- ;;((eq? keyword 'placebox) (dispatch (cadddr expr)))
- (else
- (if (module-defined? this-module keyword)
- (apply (eval keyword this-module) (cdr expr))
- (begin
- (ly:warning (_ "undefined: ~S") keyword)
- ""))))))
+ (cond ((eq? keyword 'some-func) "")
+ (else (if (module-defined? this-module keyword)
+ (apply (eval keyword this-module) (cdr expr))
+ (begin (ly:warning (_ "undefined: ~S") keyword)
+ ""))))))
;; Helper functions
(define-public (attributes attributes-alist)
(apply string-append
- (map (lambda (x) (format " ~s=\"~a\"" (car x) (cdr x)))
+ (map (lambda (x)
+ (let ((attr (car x))
+ (value (cdr x)))
+ (if (number? value)
+ (set! value (ly:format "~4f" value)))
+ (format " ~s=\"~a\"" attr value)))
attributes-alist)))
(define-public (eo entity . attributes-alist)
(format "<~S~a>\n" entity (attributes attributes-alist)))
(define-public (eoc entity . attributes-alist)
- " oc = open/close"
+ "oc = open/close"
(format "<~S~a/>\n" entity (attributes attributes-alist)))
(define-public (ec entity)
"c = close"
(format "</~S>\n" entity))
-
+(define-public (comment s)
+ (string-append "<!-- " s " -->\n"))
(define-public (entity entity string . attributes-alist)
(if (equal? string "")
(apply eoc entity attributes-alist)
(string-append
- (apply eo (cons entity attributes-alist)) string (ec entity))))
+ (apply eo (cons entity attributes-alist)) string (ec entity))))
(define (offset->point o)
- (format " ~S,~S" (car o) (- (cdr o))))
+ (ly:format "~4f ~4f" (car o) (- (cdr o))))
(define (number-list->point lst)
(define (helper lst)
(if (null? lst)
'()
- (cons (format "~S,~S" (car lst) (cadr lst))
+ (cons (format "~S ~S" (car lst) (- (cadr lst)))
(helper (cddr lst)))))
- (string-join (helper lst) " "))
+ (string-join (helper lst) " "))
(define (svg-bezier lst close)
(let* ((c0 (car (list-tail lst 3)))
(c123 (list-head lst 3)))
(string-append
- (if (not close) "M " "L ")
- (offset->point c0)
- "C " (apply string-append (map offset->point c123))
- (if (not close) "" (string-append
- "L " (offset->point close))))))
+ (if (not close) "M" "L")
+ (offset->point c0)
+ "C" (string-join (map offset->point c123) " ")
+ (if (not close) "" "z"))))
(define (sqr x)
(* x x))
(apply string-append
(map (lambda (x) (char->entity x)) (string->list string))))
+(define svg-element-regexp
+ (make-regexp "^(<[a-z]+) ?(.*>)"))
+
+(define scaled-element-regexp
+ (make-regexp "^(<[a-z]+ transform=\")(scale.[-0-9. ]+,[-0-9. ]+.\" .*>)"))
+
(define pango-description-regexp-comma
- (make-regexp "([^,]+), ?([-a-zA-Z_]*) ([0-9.]+)$"))
+ (make-regexp ",( Bold)?( Italic)?( Small-Caps)?[ -]([0-9.]+)$"))
(define pango-description-regexp-nocomma
- (make-regexp "([^ ]+) ([-a-zA-Z_]*) ?([0-9.]+)$"))
+ (make-regexp "( Bold)?( Italic)?( Small-Caps)?[ -]([0-9.]+)$"))
-(define (pango-description-to-svg-font str)
- (let*
- ((size 4.0)
- (family "Helvetica")
- (style #f)
- (match-1 (regexp-exec pango-description-regexp-comma str))
- (match-2 (regexp-exec pango-description-regexp-nocomma str))
- (match (if match-1
- match-1
- match-2)))
+(define (pango-description-to-text str expr)
+ (define alist '())
+ (define (set-attribute attr val)
+ (set! alist (assoc-set! alist attr val)))
+ (let* ((match-1 (regexp-exec pango-description-regexp-comma str))
+ (match-2 (regexp-exec pango-description-regexp-nocomma str))
+ (match (if match-1 match-1 match-2)))
(if (regexp-match? match)
(begin
- (set! family (match:substring match 1))
- (if (< 0 (string-length (match:substring match 2)))
- (set! style (match:substring match 2)))
- (set! size
- (string->number (match:substring match 3))))
-
+ (set-attribute 'font-family (match:prefix match))
+ (if (string? (match:substring match 1))
+ (set-attribute 'font-weight "bold"))
+ (if (string? (match:substring match 2))
+ (set-attribute 'font-style "italic"))
+ (if (string? (match:substring match 3))
+ (set-attribute 'font-variant "small-caps"))
+ (set-attribute 'font-size
+ (/ (string->number (match:substring match 4))
+ lily-unit-length))
+ (set-attribute 'text-anchor "start")
+ (set-attribute 'fill "currentColor"))
(ly:warning (_ "cannot decypher Pango description: ~a") str))
- (set! style
- (if (string? style)
- (format "font-style:~a;" style)
- ""))
-
- (format "font-family:~a;~afont-size:~a;text-anchor:west"
- family
- style
- (/ size lily-unit-length))
- ))
-
-;;; FONT may be font smob, or pango font string
-(define (svg-font font)
- (if (string? font)
- (pango-description-to-svg-font font)
- (let ((name-style (font-name-style font))
- (size (modified-font-metric-font-scaling font))
- (anchor "west"))
-
- (format "font-family:~a;font-style:~a;font-size:~a;text-anchor:~a;"
- (car name-style) (cadr name-style)
- size anchor))))
+ (apply entity 'text expr (reverse! alist))))
+
+(define (dump-path path scale . rest)
+ (define alist '())
+ (define (set-attribute attr val)
+ (set! alist (assoc-set! alist attr val)))
+ (if (not (null? rest))
+ (let* ((dx (car rest))
+ (dy (cadr rest))
+ (total-x (+ dx next-horiz-adv)))
+ (if (or (not (zero? total-x))
+ (not (zero? dy)))
+ (let ((x (ly:format "~4f" total-x))
+ (y (ly:format "~4f" dy)))
+ (set-attribute 'transform
+ (string-append
+ "translate(" x ", " y ") "
+ "scale(" scale ", -" scale ")")))
+ (set-attribute 'transform
+ (string-append
+ "scale(" scale ", -" scale ")"))))
+ (set-attribute 'transform (string-append
+ "scale(" scale ", -" scale ")")))
+
+ (set-attribute 'd path)
+ (set-attribute 'fill "currentColor")
+ (apply entity 'path "" (reverse alist)))
+
+
+;; A global variable for keeping track of the *cumulative*
+;; horizontal advance for glyph strings, but only if there
+;; is more than one glyph.
+(define next-horiz-adv 0.0)
+
+;; Matches the required "unicode" attribute from <glyph>
+(define glyph-unicode-value-regexp
+ (make-regexp "unicode=\"([^\"]+)\""))
+
+;; Matches the optional path data from <glyph>
+(define glyph-path-regexp
+ (make-regexp "d=\"([-MmZzLlHhVvCcSsQqTt0-9.\n ]*)\""))
+
+;; Matches a complete <glyph> element with the glyph-name
+;; attribute value of NAME. For example:
+;;
+;; <glyph glyph-name="period" unicode="." horiz-adv-x="110"
+;; d="M0 55c0 30 25 55 55 55s55 -25 55
+;; -55s-25 -55 -55 -55s-55 25 -55 55z" />
+;;
+;; TODO: it would be better to use an XML library to extract
+;; the glyphs instead, and store them in a hash table. --pmccarty
+;;
+(define (glyph-element-regexp name)
+ (make-regexp (string-append "<glyph"
+ "(([[:space:]]+[-a-z]+=\"[^\"]*\")+)?"
+ "[[:space:]]+glyph-name=\"("
+ name
+ ")\""
+ "(([[:space:]]+[-a-z]+=\"[^\"]*\")+)?"
+ "([[:space:]]+)?"
+ "/>")))
+
+(define (extract-glyph all-glyphs name size . rest)
+ (let* ((new-name (regexp-quote name))
+ (regexp (regexp-exec (glyph-element-regexp new-name) all-glyphs))
+ (glyph (match:substring regexp))
+ (unicode-attr (regexp-exec glyph-unicode-value-regexp glyph))
+ (unicode-attr-value (match:substring unicode-attr 1))
+ (unicode-attr? (regexp-match? unicode-attr))
+ (d-attr (regexp-exec glyph-path-regexp glyph))
+ (d-attr-value "")
+ (d-attr? (regexp-match? d-attr))
+ ;; TODO: not urgent, but do not hardcode this value
+ (units-per-em 1000)
+ (font-scale (ly:format "~4f" (/ size units-per-em)))
+ (path ""))
+
+ (if (and unicode-attr? (not unicode-attr-value))
+ (ly:warning (_ "Glyph must have a unicode value")))
+
+ (if d-attr? (set! d-attr-value (match:substring d-attr 1)))
+
+ (cond (
+ ;; Glyph-strings with path data
+ (and d-attr? (not (null? rest)))
+ (begin
+ (set! path (apply dump-path d-attr-value
+ font-scale
+ (list (cadr rest) (caddr rest))))
+ (set! next-horiz-adv (+ next-horiz-adv
+ (car rest)))
+ path))
+ ;; Glyph-strings without path data ("space")
+ ((and (not d-attr?) (not (null? rest)))
+ (begin
+ (set! next-horiz-adv (+ next-horiz-adv
+ (car rest)))
+ ""))
+ ;; Font smobs with path data
+ ((and d-attr? (null? rest))
+ (set! path (dump-path d-attr-value font-scale))
+ path)
+ ;; Font smobs without path data ("space")
+ (else
+ ""))))
+
+(define (extract-glyph-info all-glyphs glyph size)
+ (let* ((offsets (list-head glyph 3))
+ (glyph-name (car (reverse glyph))))
+ (apply extract-glyph all-glyphs glyph-name size offsets)))
+
+(define (svg-defs svg-font)
+ (let ((start (string-contains svg-font "<defs>"))
+ (end (string-contains svg-font "</defs>")))
+ (substring svg-font (+ start 7) (- end 1))))
+
+(define (cache-font svg-font size glyph)
+ (let ((all-glyphs (svg-defs (cached-file-contents svg-font))))
+ (if (list? glyph)
+ (extract-glyph-info all-glyphs glyph size)
+ (extract-glyph all-glyphs glyph size))))
+
+
+(define (music-string-to-path font size glyph)
+ (let* ((name-style (font-name-style font))
+ (scaled-size (/ size lily-unit-length))
+ (font-file (ly:find-file (string-append name-style ".svg"))))
+
+ (if font-file
+ (cache-font font-file scaled-size glyph)
+ (ly:warning (_ "cannot find SVG font ~S") font-file))))
+
+
+(define (font-smob-to-path font glyph)
+ (let* ((name-style (font-name-style font))
+ (scaled-size (modified-font-metric-font-scaling font))
+ (font-file (ly:find-file (string-append name-style ".svg"))))
+
+ (if font-file
+ (cache-font font-file scaled-size glyph)
+ (ly:warning (_ "cannot find SVG font ~S") font-file))))
+
+(define (woff-font-smob-to-text font expr)
+ (let* ((name-style (font-name-style font))
+ (scaled-size (modified-font-metric-font-scaling font))
+ (font-file (ly:find-file (string-append name-style ".woff")))
+ (charcode (ly:font-glyph-name-to-charcode font expr))
+ (char-lookup (format #f "&#~S;" charcode))
+ (glyph-by-name (eoc 'altglyph `(glyphname . ,expr)))
+ (apparently-broken
+ (comment "FIXME: how to select glyph by name, altglyph is broken?"))
+ (text (string-regexp-substitute "\n" ""
+ (string-append glyph-by-name apparently-broken char-lookup))))
+ (define alist '())
+ (define (set-attribute attr val)
+ (set! alist (assoc-set! alist attr val)))
+ (set-attribute 'font-family name-style)
+ (set-attribute 'font-size scaled-size)
+ (apply entity 'text text (reverse! alist))))
+
+(define font-smob-to-text
+ (if (not (ly:get-option 'svg-woff))
+ font-smob-to-path woff-font-smob-to-text))
(define (fontify font expr)
- (entity 'text expr
- `(style . ,(svg-font font))
- '(fill . "currentColor")
- ))
+ (if (string? font)
+ (pango-description-to-text font expr)
+ (font-smob-to-text font expr)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; stencil outputters
;;;
-;;; catch-all for missing stuff
-;;; comment this out to see find out what functions you miss :-)
-
-(if #f
- (begin
- (define (dummy . foo) "")
- (map (lambda (x) (module-define! this-module x dummy))
- (append
- (ly:all-stencil-expressions)
- (ly:all-output-backend-commands)))
- ))
-
-(define (url-link url x y)
- (string-append
- (eo 'a `(xlink:href . ,url))
- (eoc 'rect
- `(x . ,(car x))
- `(y . ,(car y))
- `(width . ,(- (cdr x) (car x)))
- `(height . ,(- (cdr y) (car y)))
- '(fill . "none")
- '(stroke . "none")
- '(stroke-width . "0.0"))
- (ec 'a)))
-
-(define (grob-cause offset grob)
- "")
-
-(define (no-origin)
- "")
-
-
-
(define (bezier-sandwich lst thick)
(let* ((first (list-tail lst 4))
- (first-c0 (car (list-tail first 3)))
(second (list-head lst 4)))
(entity 'path ""
'(stroke-linejoin . "round")
'(fill . "currentColor")
`(stroke-width . ,thick)
`(d . ,(string-append (svg-bezier first #f)
- (svg-bezier second first-c0)))
- )))
+ (svg-bezier second #t))))))
-(define (path thick commands)
- (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))
- (svg-head (assoc-get head '((rmoveto . m)
- (rcurveto . c)
- (curveto . C)
- (moveto . M)
- (lineto . L)
- (rlineto . l))
- ""))
- )
-
- (cons (format "~a~a "
- svg-head (number-list->point args)
- )
- (convert-path-exps (drop rest arity))))
- '()))
-
- (entity 'path ""
- `(stroke-width . ,thick)
- '(stroke-linejoin . "round")
- '(stroke-linecap . "round")
- '(stroke . "currentColor")
- '(fill . "none")
- `(d . ,(string-join (convert-path-exps commands) " "))))
-
(define (char font i)
(dispatch
`(fontify ,font ,(entity 'tspan (char->entity (integer->char i))))))
-(define-public (comment s)
- (string-append "<!-- " s " !-->\n"))
+(define (circle radius thick is-filled)
+ (entity
+ 'circle ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(fill . ,(if is-filled "currentColor" "none"))
+ `(stroke . "currentColor")
+ `(stroke-width . ,thick)
+ `(r . ,radius)))
+
+(define (dashed-line thick on off dx dy phase)
+ (draw-line thick 0 0 dx dy
+ `(stroke-dasharray . ,(format "~a,~a" on off))))
(define (draw-line thick x1 y1 x2 y2 . alist)
-
(apply entity 'line ""
(append
- `((stroke-linejoin . "round")
- (stroke-linecap . "round")
- (stroke-width . ,thick)
- (stroke . "currentColor")
- (x1 . ,x1)
- (y1 . ,(- y1))
- (x2 . ,x2)
- (y2 . ,(- y2)))
- alist)))
+ `((stroke-linejoin . "round")
+ (stroke-linecap . "round")
+ (stroke-width . ,thick)
+ (stroke . "currentColor")
+ (x1 . ,x1)
+ (y1 . ,(- y1))
+ (x2 . ,x2)
+ (y2 . ,(- y2)))
+ alist)))
-(define (dashed-line thick on off dx dy phase)
- (draw-line thick 0 0 dx dy `(style . ,(format "stroke-dasharray:~a,~a;" on off))))
+(define (ellipse x-radius y-radius thick is-filled)
+ (entity
+ 'ellipse ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(fill . ,(if is-filled "currentColor" "none"))
+ `(stroke . "currentColor")
+ `(stroke-width . ,thick)
+ `(rx . ,x-radius)
+ `(ry . ,y-radius)))
+
+(define (partial-ellipse x-radius y-radius start-angle end-angle thick connect fill)
+ (define (make-ellipse-radius x-radius y-radius angle)
+ (/ (* x-radius y-radius)
+ (sqrt (+ (* (* y-radius y-radius)
+ (* (cos angle) (cos angle)))
+ (* (* x-radius x-radius)
+ (* (sin angle) (sin angle)))))))
+ (let*
+ ((new-start-angle (* PI-OVER-180 (angle-0-360 start-angle)))
+ (start-radius (make-ellipse-radius x-radius y-radius new-start-angle))
+ (new-end-angle (* PI-OVER-180 (angle-0-360 end-angle)))
+ (end-radius (make-ellipse-radius x-radius y-radius new-end-angle))
+ (epsilon 1.5e-3)
+ (x-end (- (* end-radius (cos new-end-angle))
+ (* start-radius (cos new-start-angle))))
+ (y-end (- (* end-radius (sin new-end-angle))
+ (* start-radius (sin new-start-angle)))))
+ (if (and (< (abs x-end) epsilon) (< (abs y-end) epsilon))
+ (entity
+ 'ellipse ""
+ `(fill . ,(if fill "currentColor" "none"))
+ `(stroke . "currentColor")
+ `(stroke-width . ,thick)
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ '(cx . 0)
+ '(cy . 0)
+ `(rx . ,x-radius)
+ `(ry . ,y-radius))
+ (entity
+ 'path ""
+ `(fill . ,(if fill "currentColor" "none"))
+ `(stroke . "currentColor")
+ `(stroke-width . ,thick)
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ (cons
+ 'd
+ (string-append
+ (ly:format
+ "M~4f ~4fA~4f ~4f 0 ~4f 0 ~4f ~4f"
+ (* start-radius (cos new-start-angle))
+ (- (* start-radius (sin new-start-angle)))
+ x-radius
+ y-radius
+ (if (> 0 (- new-start-angle new-end-angle)) 0 1)
+ (* end-radius (cos new-end-angle))
+ (- (* end-radius (sin new-end-angle))))
+ (if connect
+ (ly:format "L~4f,~4f"
+ (* start-radius (cos new-start-angle))
+ (- (* start-radius (sin new-start-angle))))
+ "")))))))
+
+(define (embedded-svg string)
+ string)
+
+(define (embedded-glyph-string font size cid glyphs)
+ (define path "")
+ (if (= 1 (length glyphs))
+ (set! path (music-string-to-path font size (car glyphs)))
+ (begin
+ (set! path
+ (string-append (eo 'g)
+ (string-join
+ (map (lambda (x)
+ (music-string-to-path font size x))
+ glyphs)
+ "\n")
+ (ec 'g)))))
+ (set! next-horiz-adv 0.0)
+ path)
+
+(define (woff-glyph-string font-name size cid? w-x-y-named-glyphs)
+ (let* ((name-style (font-name-style font-name))
+ (family-designsize (regexp-exec (make-regexp "(.*)-([0-9]*)")
+ font-name))
+ (family (if (regexp-match? family-designsize)
+ (match:substring family-designsize 1)
+ font-name))
+ (design-size (if (regexp-match? family-designsize)
+ (match:substring family-designsize 2)
+ #f))
+ (scaled-size (/ size lily-unit-length))
+ (font (ly:paper-get-font paper `(((font-family . ,family)
+ ,(if design-size
+ `(design-size . design-size)))))))
+ (define (glyph-spec w x y g)
+ (let* ((charcode (ly:font-glyph-name-to-charcode font g))
+ (char-lookup (format #f "&#~S;" charcode))
+ (glyph-by-name (eoc 'altglyph `(glyphname . ,g)))
+ (apparently-broken
+ (comment "XFIXME: how to select glyph by name, altglyph is broken?")))
+ ;; what is W?
+ (ly:format
+ "<text~a font-family=\"~a\" font-size=\"~a\">~a</text>"
+ (if (or (> (abs x) 0.00001)
+ (> (abs y) 0.00001))
+ (ly:format " transform=\"translate(~4f,~4f)\"" x y)
+ " ")
+ name-style scaled-size
+ (string-regexp-substitute
+ "\n" ""
+ (string-append glyph-by-name apparently-broken char-lookup)))))
+
+ (string-join (map (lambda (x) (apply glyph-spec x))
+ (reverse w-x-y-named-glyphs)) "\n")))
+
+(define glyph-string
+ (if (not (ly:get-option 'svg-woff)) embedded-glyph-string woff-glyph-string))
+
+(define (grob-cause offset grob)
+ "")
(define (named-glyph font name)
- (dispatch
- `(fontify ,font ,(entity 'tspan
- (integer->entity
- (ly:font-glyph-name-to-charcode font name))))))
+ (dispatch `(fontify ,font ,name)))
+
+(define (no-origin)
+ "")
+
+(define (oval x-radius y-radius thick is-filled)
+ (let ((x-max x-radius)
+ (x-min (- x-radius))
+ (y-max y-radius)
+ (y-min (- y-radius)))
+ (entity
+ 'path ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(fill . ,(if is-filled "currentColor" "none"))
+ `(stroke . "currentColor")
+ `(stroke-width . ,thick)
+ `(d . ,(ly:format "M~4f ~4fC~4f ~4f ~4f ~4f ~4f ~4fS~4f ~4f ~4f ~4fz"
+ x-max 0
+ x-max y-max
+ x-min y-max
+ x-min 0
+ x-max y-min
+ x-max 0)))))
+
+(define* (path thick commands #:optional (cap 'round) (join 'round) (fill? #f))
+ (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)
+ ((eq? head 'closepath) 0)
+ (else 1)))
+ (args (take rest arity))
+ (svg-head (assoc-get head
+ '((rmoveto . m)
+ (rcurveto . c)
+ (curveto . C)
+ (moveto . M)
+ (lineto . L)
+ (rlineto . l)
+ (closepath . z))
+ "")))
+
+ (cons (format "~a~a" svg-head (number-list->point args))
+ (convert-path-exps (drop rest arity))))
+ '()))
+
+ (let* ((line-cap-styles '(butt round square))
+ (line-join-styles '(miter round bevel))
+ (cap-style (if (not (memv cap line-cap-styles))
+ (begin
+ (ly:warning (_ "unknown line-cap-style: ~S")
+ (symbol->string cap))
+ 'round)
+ cap))
+ (join-style (if (not (memv join line-join-styles))
+ (begin
+ (ly:warning (_ "unknown line-join-style: ~S")
+ (symbol->string join))
+ 'round)
+ join)))
+ (entity 'path ""
+ `(stroke-width . ,thick)
+ `(stroke-linejoin . ,(symbol->string join-style))
+ `(stroke-linecap . ,(symbol->string cap-style))
+ '(stroke . "currentColor")
+ `(fill . ,(if fill? "currentColor" "none"))
+ `(d . ,(apply string-append (convert-path-exps commands))))))
(define (placebox x y expr)
- (entity 'g
- expr
- ;; FIXME: Not using GNU coding standards [translate ()] here
- ;; to work around a bug in Microsoft Internet Explorer 6.0
- `(transform . ,(ly:format "translate(~f, ~f)"
- x (- y)))))
+ (if (string-null? expr)
+ ""
+ (let*
+ ((normal-element (regexp-exec svg-element-regexp expr))
+ (scaled-element (regexp-exec scaled-element-regexp expr))
+ (scaled? (if scaled-element #t #f))
+ (match (if scaled? scaled-element normal-element))
+ (string1 (match:substring match 1))
+ (string2 (match:substring match 2)))
+
+ (if scaled?
+ (string-append string1
+ (ly:format "translate(~4f, ~4f) " x (- y))
+ string2
+ "\n")
+ (string-append string1
+ (ly:format " transform=\"translate(~4f, ~4f)\" "
+ x (- y))
+ string2
+ "\n")))))
(define (polygon coords blot-diameter is-filled)
(entity
- 'polygon ""
- '(stroke-linejoin . "round")
- '(stroke-linecap . "round")
- `(stroke-width . ,blot-diameter)
- `(fill . ,(if is-filled "currentColor" "none"))
- '(stroke . "currentColor")
- `(points . ,(string-join
- (map offset->point (ly:list->offsets '() coords))))
- ))
+ 'polygon ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(stroke-width . ,blot-diameter)
+ `(fill . ,(if is-filled "currentColor" "none"))
+ '(stroke . "currentColor")
+ `(points . ,(string-join
+ (map offset->point (ly:list->offsets '() coords))))))
+
+(define (repeat-slash width slope thickness)
+ (define (euclidean-length x y)
+ (sqrt (+ (* x x) (* y y))))
+ (let* ((x-width (euclidean-length thickness (/ thickness slope)))
+ (height (* width slope)))
+ (entity
+ 'path ""
+ '(fill . "currentColor")
+ `(d . ,(ly:format "M0 0l~4f 0 ~4f ~4f ~4f 0z"
+ x-width width (- height) (- x-width))))))
-;; rotate around given point
-(define (setrotation ang x y)
- (format "<g transform=\"rotate(~a,~a,~a)\">"
- (number->string (* -1 ang))
- (number->string x)
- (number->string (* -1 y))))
+(define (resetcolor)
+ "</g>\n")
(define (resetrotation ang x y)
- "</g>")
+ "</g>\n")
-(define (round-filled-box breapth width depth height blot-diameter)
- (entity 'rect ""
- ;; The stroke will stick out. To use stroke,
- ;; the stroke-width must be subtracted from all other dimensions.
- ;;'(stroke-linejoin . "round")
- ;;'(stroke-linecap . "round")
- ;;`(stroke-width . ,blot)
- ;;'(stroke . "red")
- ;;'(fill . "orange")
-
- `(x . ,(- breapth))
- `(y . ,(- height))
- `(width . ,(+ breapth width))
- `(height . ,(+ depth height))
- `(ry . ,(/ blot-diameter 2))
- ))
+(define (resetscale)
+ "</g>\n")
-(define (circle radius thick is-filled)
+(define (round-filled-box breapth width depth height blot-diameter)
(entity
- 'circle ""
- '(stroke-linejoin . "round")
- '(stroke-linecap . "round")
- `(fill . ,(if is-filled "currentColor" "none"))
- `(stroke . "currentColor")
- `(stroke-width . ,thick)
- `(r . ,radius)))
+ 'rect ""
+ ;; The stroke will stick out. To use stroke,
+ ;; the stroke-width must be subtracted from all other dimensions.
+ ;;'(stroke-linejoin . "round")
+ ;;'(stroke-linecap . "round")
+ ;;`(stroke-width . ,blot)
+ ;;'(stroke . "red")
+ ;;'(fill . "orange")
+
+ `(x . ,(- breapth))
+ `(y . ,(- height))
+ `(width . ,(+ breapth width))
+ `(height . ,(+ depth height))
+ `(ry . ,(/ blot-diameter 2))
+ '(fill . "currentColor")))
-(define (ellipse x-radius y-radius thick is-filled)
- (entity
- 'ellipse ""
- '(stroke-linejoin . "round")
- '(stroke-linecap . "round")
- `(fill . ,(if is-filled "currentColor" "none"))
- `(stroke . "currentColor")
- `(stroke-width . ,thick)
- `(rx . ,x-radius)
- `(ry . ,y-radius)))
+(define (setcolor r g b)
+ (format "<g color=\"rgb(~a%, ~a%, ~a%)\">\n"
+ (* 100 r) (* 100 g) (* 100 b)))
-(define (oval x-radius y-radius thick is-filled)
- (let ((x-max x-radius)
- (x-min (- x-radius))
- (y-max y-radius)
- (y-min (- y-radius)))
- (entity
- 'path ""
- '(stroke-linejoin . "round")
- '(stroke-linecap . "round")
- `(fill . ,(if is-filled "currentColor" "none"))
- `(stroke . "currentColor")
- `(stroke-width . ,thick)
- `(d . ,(ly:format "M~4f,~4f C~4f,~4f ~4f,~4f ~4f,~4f S~4f,~4f ~4f,~4f"
- x-max 0
- x-max y-max
- x-min y-max
- x-min 0
- x-max y-min
- x-max 0)))))
+;; rotate around given point
+(define (setrotation ang x y)
+ (ly:format "<g transform=\"rotate(~4f, ~4f, ~4f)\">\n"
+ (- ang) x (- y)))
+
+(define (setscale x y)
+ (ly:format "<g transform=\"scale(~4f, ~4f)\">\n"
+ x y))
(define (text font string)
(dispatch `(fontify ,font ,(entity 'tspan (string->entities string)))))
-(define (utf-8-string pango-font-description string)
- (dispatch `(fontify ,pango-font-description ,(entity 'tspan string))))
-
-
-
-(define (setcolor r g b)
- (format "<g color=\"rgb(~a%,~a%,~a%)\">"
- (* 100 r) (* 100 g) (* 100 b)
- ))
+(define (url-link url x y)
+ (string-append
+ (eo 'a `(xlink:href . ,url))
+ (eoc 'rect
+ `(x . ,(car x))
+ `(y . ,(car y))
+ `(width . ,(- (cdr x) (car x)))
+ `(height . ,(- (cdr y) (car y)))
+ '(fill . "none")
+ '(stroke . "none")
+ '(stroke-width . "0.0"))
+ (ec 'a)))
-(define (resetcolor)
- "</g>")
+(define (utf-8-string pango-font-description string)
+ (let ((escaped-string (string-regexp-substitute
+ "<" "<"
+ (string-regexp-substitute "&" "&" string))))
+ (dispatch `(fontify ,pango-font-description
+ ,(entity 'tspan escaped-string)))))
projects / lilypond.git / blobdiff