X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Foutput-svg.scm;h=b6bdb2721c56abc52ee406bf07c4a4bb900e2ec5;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=6b4cf35dcc2663a4e947aed3330e1e79f981b489;hpb=38299c6707bf7db3b79575e2600005ec0a3a7343;p=lilypond.git

diff --git a/scm/output-svg.scm b/scm/output-svg.scm
index 6b4cf35dcc..b6bdb2721c 100644
--- a/scm/output-svg.scm
+++ b/scm/output-svg.scm
@@ -1,52 +1,37 @@
 ;;;; 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
 
-;;; FIXME
-
-;;; * sodipodi gets confuseed by dashes in font names.
-;;;
-;;;   removing feta-nummer*.pfa (LilyPond-feta-nummer),
-;;;   feta-braces*.pfa (LilyPond-feta-braces), feta-din*.pfa
-;;;   (LilyPond-feta-din) from font path shows feta fonts in sodipodi.
-;;;
-;;; * inkscape fails to map Feta fonts to private use area (PUA) E000
-;;;   (sodipodi is fine).
-
-;;; * maybe we need to have a unicode mapping somehow, we could
-;;;   - use OpenType instead of Type1
-;;; http://lists.gnu.org/archive/html/lilypond-devel/2004-05/msg00098.html
-;;;
-;;;   - or fix the pangofc-afm-decoder and add it to Pango (no chance?)
-;;;     or have fontconfig read AFM files
-;;;  http://lists.gnu.org/archive/html/lilypond-devel/2004-05/msg00103.html
+;;;; 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))
+ (ice-9 format)
+ (lily)
+ (srfi srfi-1)
+ (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))))
+(define fancy-format format)
+(define format ergonomic-simple-format)
 
+(define lily-unit-length 1.75)
 
 (define (dispatch expr)
   (let ((keyword (car expr)))
@@ -57,82 +42,126 @@
       (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 (control-flip-y c)
-  (cons (car c) (* -1 (cdr c))))
+(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-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 (ly:numbers->string lst)
-  (string-append
-   (number->string (car lst))
-   (if (null? (cdr lst))
-       ""
-       (string-append "," (ly:numbers->string (cdr 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 (char->entity font char)
-  (format #f "&#x~x;" (char->unicode-index font char)))
-		   
-(define (string->entities font string)
-  (apply string-append
-	 (map (lambda (x) (char->entity font x)) (string->list string))))
+(define (integer->entity integer)
+  (fancy-format "&#x~x;" integer))
 
-(define (svg-font font)
-  (let* ((encoding (ly:font-encoding font))
-	 (anchor (if (memq encoding '(fetaMusic fetaBraces)) 'start 'start)))
-   (format #f "font-family:~a;font-size:~a;text-anchor:~S;"
-	   (font-family font) (font-size font) anchor)))
+(define (char->entity char)
+  (integer->entity (char->integer char)))
 
-(define (fontify font expr)
-   (tagify "text" expr (cons 'style (svg-font font))))
+(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)
+  (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)
+  (entity 'text expr
+	  `(style . ,(svg-font font))
+	  '(fill . "currentColor")
+	  ))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;; stencil outputters
@@ -140,71 +169,216 @@
 
 ;;; 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 font (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 ,(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 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)
+	  ))
 
-;; WTF is this in every backend?
-(define (horizontal-line x1 x2 th)
-  (filledbox (- x1) (- x2 x1) (* .5 th) (* .5 th)))
+(define (resetcolor)
+  "</g>")