;;;; 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>
;;;; http://www.w3.org/TR/SVG11
+;;;; http://www.w3.org/TR/SVG12/ -- page, pageSet in draft
+
+;;;; TODO:
+;;;; * font selection: name, size, design size
+;;;; * .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))
(use-modules
(guile)
(ice-9 regex)
- (lily))
+ (lily)
+ (srfi srfi-13))
;; GLobals
;; FIXME: 2?
(define output-scale (* 2 scale-to-unit))
-(define (stderr string . rest)
- (apply format (cons (current-error-port) (cons string rest)))
- (force-output (current-error-port)))
-
(define (debugf string . rest)
(if #f
(apply stderr (cons string rest))))
(display
(string-append "undefined: " (symbol->string keyword) "\n"))
""))))))
-
+
;; 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 (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 (attributes attributes-alist)
+ (apply string-append
+ (map (lambda (x) (format #f " ~s=\"~a\"" (car x) (cdr x)))
+ attributes-alist)))
+
+(define-public (eo entity . attributes-alist)
+ (format #f "<~S~a>\n" entity (attributes attributes-alist)))
+
+(define-public (eoc entity . attributes-alist)
+ (format #f "<~S~a/>\n" entity (attributes attributes-alist)))
+
+(define-public (ec entity)
+ (format #f "</~S>\n" entity))
+
+(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 #f " ~S,~S" (car o) (cdr o)))
(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)))
+ (scaling (* output-scale magnification designsize)))
(debugf "scaling:~S\n" scaling)
(debugf "magnification:~S\n" magnification)
(debugf "design:~S\n" designsize)
(define (integer->entity integer)
(format #f "&#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))))
+;; FIXME: font can be pango font-name or smob
+;; determine size and style properly.
(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)))
+ (let ((name-style (if (string? font) (list font "Regular")
+ (font-name-style font)))
+ (size (if (string? font) 12 (font-size font)))
+ (anchor "west"))
+ (format #f "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 (cons 'style (svg-font font))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; stencil outputters
(ly:all-stencil-expressions)
(ly:all-output-backend-commands)))
-(define (beam width slope thick blot)
+(define (rect-beam width slope thick blot-diameter)
(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)))))
+ (z (/ y x)))
+ (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-diameter)
+ ;;'(stroke . "red")
+ ;;'(fill . "orange")
+
+ `(x . 0)
+ `(y . ,(- (/ thick 2)))
+ `(width . ,width)
+ `(height . ,(+ thick (* (abs z) (/ thick 2))))
+ `(rx . ,(/ blot-diameter 2))
+ `(transform . ,(string-append
+ (format #f "matrix (1, ~f, 0, 1, 0, 0)" (- z))
+ (format #f " scale (~f, ~f)"
+ output-scale output-scale))))))
+
+(define (beam width slope thick blot-diameter)
+ (let* ((b blot-diameter)
+ (t (- thick b))
+ (w (- width b))
+ (h (* w slope)))
+ (entity 'polygon ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(stroke-width . ,blot-diameter)
+ '(stroke . "black")
+ '(fill . "black")
+ `(points . ,(string-join
+ (map offset->point
+ (list (cons (/ b 2) (/ t 2))
+ (cons (+ w (/ b 2)) (+ h (/ t 2)))
+ (cons (+ w (/ b 2)) (+ h (- (/ t 2))))
+ (cons (/ b 2) (- (/ t 2)))))))
+ `(transform
+ . ,(format #f "scale (~f, -~f)" output-scale output-scale)))))
+
+(define (path-beam width slope thick blot-diameter)
+ (let* ((b blot-diameter)
+ (t (- thick b))
+ (w (- width b))
+ (h (* w slope)))
+ (entity 'path ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(stroke-width . ,blot-diameter)
+ '(stroke . "black")
+ '(fill . "black")
+ `(d . ,(format #f "M ~S,~S l ~S,~S l ~S,~S l ~S,~S l ~S,~S"
+ (/ b 2) (/ t 2)
+ w (- h)
+ 0 (- t)
+ (- w) h
+ 0 t))
+ `(transform
+ . ,(format #f "scale (~f, ~f)" output-scale output-scale)))))
(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-width . ,thick)
+ '(stroke . "black")
+ '(fill . "black")
`(d . ,(string-append (svg-bezier first #f)
- (svg-bezier second first-c0))))))
+ (svg-bezier second first-c0)))
+ `(transform
+ . ,(format #f "scale (~f, -~f)" output-scale output-scale)))))
(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 (dashed-line thick on off dx dy)
+ (draw-line thick 0 0 dx dy))
+
+(define (draw-line thick x1 y1 x2 y2)
+ (entity 'line ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(stroke-width . ,thick)
+ '(stroke . "black")
+ ;;'(fill . "black")
+ `(x1 . ,x1)
+ `(y1 . ,y1)
+ `(x2 . ,x2)
+ `(y2 . ,y2)
+ `(transform
+ . ,(format #f "scale (~f, -~f)" output-scale output-scale))))
+
+;; WTF is this in every backend?
+(define (horizontal-line x1 x2 th)
+ (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
+
(define (filledbox breapth width depth height)
(round-filled-box breapth width depth height 0))
(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"
+ (entity 'g
;; FIXME -- JCN
;;(dispatch expr)
expr
`(transform . ,(format #f "translate (~f, ~f)"
(* output-scale x)
- (- 0 (* output-scale y))))))
+ (- (* output-scale y))))))
+
+(define (polygon coords blot-diameter)
+ (entity 'polygon ""
+ '(stroke-linejoin . "round")
+ '(stroke-linecap . "round")
+ `(stroke-width . ,blot-diameter)
+ '(stroke . "black")
+ ;;'(fill . "black")
+ `(points . ,(string-join
+ (map offset->point (ly:list->offsets '() coords))))
+ `(transform
+ . ,(format #f "scale (~f, -~f)" output-scale output-scale))))
(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))
+ `(transform
+ . ,(format #f "scale (~f, ~f)" output-scale output-scale))))
(define (text font string)
- (dispatch `(fontify ,font ,(tagify "tspan" (string->entities string)))))
+ (dispatch `(fontify ,font ,(entity 'tspan (string->entities string)))))
-;; WTF is this in every backend?
-(define (horizontal-line x1 x2 th)
- (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
+(define (utf8-string pango-font-description string)
+ (dispatch `(fontify ,pango-font-description ,(entity 'tspan string))))
projects / lilypond.git / blobdiff