;;;; output-svg.scm -- implement Scheme output routines for SVG1
;;;;
;;;; source file of the GNU LilyPond music typesetter
-;;;;
-;;;; (c) 2002--2004 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;;
+;;;; (c) 2002--2008 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
-(debug-enable 'backtrace)
(define-module (scm output-svg))
(define this-module (current-module))
(use-modules
(guile)
(ice-9 regex)
- (lily))
-
-;; GLobals
-;; FIXME: 2?
-(define output-scale (* 2 scale-to-unit))
+ (ice-9 format)
+ (lily)
+ (srfi srfi-1)
+ (srfi srfi-13))
-(define (stderr string . rest)
- (apply format (cons (current-error-port) (cons string rest)))
- (force-output (current-error-port)))
+(define fancy-format format)
+(define format ergonomic-simple-format)
-(define (debugf string . rest)
- (if #f
- (apply stderr (cons string rest))))
+(define lily-unit-length 1.75)
(define (dispatch expr)
(let ((keyword (car expr)))
(if (module-defined? this-module keyword)
(apply (eval keyword this-module) (cdr expr))
(begin
- (display
- (string-append "undefined: " (symbol->string keyword) "\n"))
+ (ly:warning (_ "undefined: ~S") keyword)
""))))))
-
+
;; Helper functions
-(define (tagify tag string . attribute-alist)
- (string-append
- "<"
- tag
- (apply string-append
- (map (lambda (x)
- (string-append " " (symbol->string (car x)) "='" (cdr x) "'"))
- attribute-alist))
- ">"
- string "</" tag ">\n"))
-
-(define (control->list c)
- (list (car c) (cdr c)))
-
-(define (control->string c)
- (string-append
- (number->string (car c)) ","
- ;; lose the -1
- (number->string (* -1 (cdr c))) " "))
+(define-public (attributes attributes-alist)
+ (apply string-append
+ (map (lambda (x) (format " ~s=\"~a\"" (car x) (cdr x)))
+ attributes-alist)))
+
+(define-public (eo entity . attributes-alist)
+ "o = open"
+ (format "<~S~a>\n" entity (attributes attributes-alist)))
+
+(define-public (eoc entity . attributes-alist)
+ " oc = open/close"
+ (format "<~S~a/>\n" entity (attributes attributes-alist)))
+
+(define-public (ec entity)
+ "c = close"
+ (format "</~S>\n" entity))
-(define (control-flip-y c)
- (cons (car c) (* -1 (cdr c))))
-(define (ly:numbers->string lst)
- (string-append
- (number->string (car lst))
- (if (null? (cdr lst))
- ""
- (string-append "," (ly:numbers->string (cdr lst))))))
+
+(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))))
+
+(define (offset->point o)
+ (format " ~S,~S" (car o) (- (cdr o))))
+
+(define (number-list->point lst)
+ (define (helper lst)
+ (if (null? lst)
+ '()
+ (cons (format "~S,~S" (car lst) (cadr lst))
+ (helper (cddr 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 ")
- (control->string c0)
- "C " (apply string-append (map control->string c123))
+ (offset->point c0)
+ "C " (apply string-append (map offset->point c123))
(if (not close) "" (string-append
- "L " (control->string close))))))
+ "L " (offset->point close))))))
(define (sqr x)
(* x x))
-(define (font-size font)
- (let* ((designsize (ly:font-design-size font))
- (magnification (* (ly:font-magnification font)))
- (ops 2)
- (scaling (* ops magnification designsize)))
- (debugf "scaling:~S\n" scaling)
- (debugf "magnification:~S\n" magnification)
- (debugf "design:~S\n" designsize)
- scaling))
-
(define (integer->entity integer)
- (format #f "&#x~x;" integer))
-
+ (fancy-format "&#x~x;" integer))
+
(define (char->entity char)
(integer->entity (char->integer char)))
-
+
(define (string->entities string)
(apply string-append
(map (lambda (x) (char->entity x)) (string->list string))))
+(define pango-description-regexp-comma
+ (make-regexp "([^,]+), ?([-a-zA-Z_]*) ([0-9.]+)$"))
+
+(define pango-description-regexp-nocomma
+ (make-regexp "([^ ]+) ([-a-zA-Z_]*) ?([0-9.]+)$"))
+
+(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)))
+
+ (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))))
+
+ (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)
- (let* ((encoding (ly:font-encoding font))
- (anchor (if (memq encoding '(fetaMusic fetaBraces)) 'start 'start))
- (family (font-family font)))
- (format #f "font-family:~a;font-weight:~a;font-size:~a;text-anchor:~S;"
- (otf-name-mangling font family)
- (otf-weight-mangling font family)
- (font-size font) anchor)))
+ (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))))
(define (fontify font expr)
- (tagify "text" expr (cons 'style (svg-font font))))
-
-;; FIXME
-(define-public (otf-name-mangling font family)
- ;; Hmm, family is bigcheese20/26?
- (if (string=? (substring family 0 (min (string-length family) 9))
- "bigcheese")
- "LilyPond"
- (if (string=? family "aybabtu")
- "LilyPondBraces"
- family)))
-
-(define-public (otf-weight-mangling font family)
- ;; Hmm, family is bigcheese20/26?
- (if (string=? (substring family 0 (min (string-length family) 9))
- "bigcheese")
- (substring family 9)
- "Regular"))
+ (entity 'text expr
+ `(style . ,(svg-font font))
+ '(fill . "currentColor")
+ ))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; stencil outputters
;;; catch-all for missing stuff
;;; comment this out to see find out what functions you miss :-)
-(define (dummy . foo) "")
-(map (lambda (x) (module-define! this-module x dummy))
- (append
- (ly:all-stencil-expressions)
- (ly:all-output-backend-commands)))
-
-(define (beam width slope thick blot)
- (let* ((x width)
- (y (* slope width))
- (z (sqrt (+ (sqr x) (sqr y)))))
- (tagify "rect" ""
- `(style . ,(format "stroke-linejoin:round;stroke-linecap:round;stroke-width:~f;" blot))
- `(x . "0")
- `(y . ,(number->string (* output-scale (- 0 (/ thick 2)))))
- `(width . ,(number->string (* output-scale width)))
- `(height . ,(number->string (* output-scale thick)))
- `(ry . ,(number->string (* output-scale (/ blot 2))))
- `(transform .
- ,(format #f "matrix (~f, ~f, 0, 1, 0, 0) scale (~f, ~f)"
- (/ x z)
- (* -1 (/ y z))
- 1 1)))))
+
+(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)))
- (tagify "path" ""
- `(style . ,(format "stroke-linejoin:round;stroke-linecap:round;stroke-width:~f;" thick))
- `(transform . ,(format #f "scale (~f, ~f)"
- output-scale output-scale))
+ (entity 'path ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ '(stroke . "currentColor")
+ '(fill . "currentColor")
+ `(stroke-width . ,thick)
`(d . ,(string-append (svg-bezier first #f)
- (svg-bezier second first-c0))))))
+ (svg-bezier second first-c0)))
+ )))
+
+(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 ,(tagify "tspan" (char->entity (integer->char i))))))
+ `(fontify ,font ,(entity 'tspan (char->entity (integer->char i))))))
-(define (comment s)
+(define-public (comment s)
(string-append "<!-- " s " !-->\n"))
-(define (filledbox breapth width depth height)
- (round-filled-box breapth width depth height 0))
+(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)))
+
+(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 (named-glyph font name)
(dispatch
- `(fontify ,font ,(tagify "tspan"
+ `(fontify ,font ,(entity 'tspan
(integer->entity
(ly:font-glyph-name-to-charcode font name))))))
(define (placebox x y expr)
- (tagify "g"
- ;; FIXME -- JCN
- ;;(dispatch expr)
+ (entity 'g
expr
- `(transform . ,(format #f "translate (~f, ~f)"
- (* output-scale x)
- (- 0 (* output-scale y))))))
+ ;; 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)))))
+
+(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))))
+ ))
+
+;; 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 (resetrotation ang x y)
+ "</g>")
(define (round-filled-box breapth width depth height blot-diameter)
- (tagify "rect" ""
- `(style . ,(format "stroke-linejoin:round;stroke-linecap:round;stroke-width:~f;" blot-diameter))
- `(x . ,(number->string (* output-scale (- 0 breapth))))
- `(y . ,(number->string (* output-scale (- 0 height))))
- `(width . ,(number->string (* output-scale (+ breapth width))))
- `(height . ,(number->string (* output-scale (+ depth height))))
- `(ry . ,(number->string (/ blot-diameter 2)))))
+ (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 (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 (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 (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)))))
(define (text font string)
- (dispatch `(fontify ,font ,(tagify "tspan" (string->entities 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)
+ ))
-;; WTF is this in every backend?
-(define (horizontal-line x1 x2 th)
- (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
+(define (resetcolor)
+ "</g>")
projects / lilypond.git / blobdiff