-;; As an excercise, do it with records.
-;; Should use GOOPS, really.
+;;;; This file is part of LilyPond, the GNU music typesetter.
+;;;;
+;;;; Copyright (C) 2004--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;;
+;;;; 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/>.
;; TODO:
;;
;; lookup-font should be written in C.
;;
-;; should dump tree to .texi as internal documentation
-;;
-;; * should extract design sizes from fonts: fonts should
-;; be read off the disk, on demand, something like:
-;;
-;; cmr -> ((font-load "cmr6") (font-load "cmr8") .. )
-;;
+
+;; We have a tree, where each level of the tree is a qualifier
+;; (eg. encoding, family, shape, series etc.) this defines the levels
+;; in the tree. The first one is encoding, so we can directly select
+;; between text or music in the first step of the selection.
+(define default-qualifier-order
+ '(font-encoding font-family font-shape font-series))
(define-class <Font-tree-element>
- ()
- )
+ ())
(define-class <Font-tree-leaf> (<Font-tree-element>)
(default-size #:init-keyword #:default-size)
(define (make-font-tree-node
qualifier default)
(make <Font-tree-node>
- #:qualifier qualifier
- #:default default
- #:children (make-hash-table 11)))
+ #:qualifier qualifier
+ #:default default
+ #:children (make-hash-table 11)))
(define-method (display (leaf <Font-tree-leaf>) port)
(map (lambda (x) (display x port))
- (list
- "Font-size-family: \n"
- (slot-ref leaf 'default-size)
- (slot-ref leaf 'size-vector) )))
-
-(define-method (display (node <Font-tree-node>) port)
-
- (map
- (lambda (x)
- (display x port))
-
- (list
- "Font_node { \nqual: "
- (font-qualifier node)
- "(def: "
- (font-default node)
- ") {\n"))
- (for-each
- (lambda (x)
- (display "\n")
- (display (car x) port)
- (display "=" port)
- (display (cdr x) port))
- (hash-table->alist (font-children node)))
- (display "} } \n"))
-
+ (list
+ "#<Font-size-family:\n"
+ (slot-ref leaf 'default-size)
+ (slot-ref leaf 'size-vector)
+ "#>"
+ )))
+(define-method (display (node <Font-tree-node>) port)
+ (map
+ (lambda (x)
+ (display x port))
+ (list
+ "Font_node {\nqual: "
+ (font-qualifier node)
+ "(def: "
+ (font-default node)
+ ") {\n"))
+ (for-each
+ (lambda (x)
+ (display "\n")
+ (display (car x) port)
+ (display "=" port)
+ (display (cdr x) port))
+ (hash-table->alist (font-children node)))
+ (display "} }\n"))
-(define default-qualifier-order
- '(font-encoding font-family font-shape font-series))
(define-method (add-font (node <Font-tree-node>) fprops size-family)
(define (assoc-delete key alist)
(assoc-remove! (list-copy alist) key))
+
(define (make-node fprops size-family)
(if (null? fprops)
(make-font-tree-leaf (car size-family) (cdr size-family))
- (let*
- ((qual (next-qualifier default-qualifier-order fprops)))
+ (let* ((qual (next-qualifier default-qualifier-order fprops)))
(make-font-tree-node qual
- (assoc-get qual fprops)))
- ))
+ (assoc-get qual fprops)))))
+
(define (next-qualifier order props)
(cond
((and (null? props) (null? order))
(else
(if (assoc-get (car order) props)
(car order)
- (next-qualifier (cdr order) props))
- )))
-
- (let*
- ((q (font-qualifier node))
- (d (font-default node))
- (v (assoc-get q fprops d))
- (new-fprops (assoc-delete q fprops))
- (child (hashq-ref (slot-ref node 'children)
- v #f)))
-
-
+ (next-qualifier (cdr order) props)))))
+
+ (let* ((q (font-qualifier node))
+ (d (font-default node))
+ (v (assoc-get q fprops d))
+ (new-fprops (assoc-delete q fprops))
+ (child (hashq-ref (slot-ref node 'children)
+ v #f)))
(if (not child)
(begin
(set! child (make-node new-fprops size-family))
(if (pair? new-fprops)
(add-font child new-fprops size-family))))
-
(define-method (add-font (node <Font-tree-leaf>) fprops size-family)
(throw "must add to node, not leaf"))
-
(define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
- (let*
- ((qual (font-qualifier node))
+ (let* ((qual (font-qualifier node))
(def (font-default node))
(val (chain-assoc-get qual alist-chain def))
- (desired-child (hashq-ref (font-children node) val))
- )
+ (desired-child (hashq-ref (font-children node) val)))
(if desired-child
(g-lookup-font desired-child alist-chain)
- (g-lookup-font (hashq-ref (font-children node) def) alist-chain)
- )))
+ (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
(define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
node)
-;; two step call is handy for debugging.
+;; two step call is handy for debugging.
(define (lookup-font node alist-chain)
(g-lookup-font node alist-chain))
+;; TODO - we could actually construct this by loading all OTFs and
+;; inspecting their design size fields.
+(define-public feta-design-size-mapping
+ '((11 . 11.22)
+ (13 . 12.60)
+ (14 . 14.14)
+ (16 . 15.87)
+ (18 . 17.82)
+ (20 . 20)
+ (23 . 22.45)
+ (26 . 25.20)))
+
+;; Each size family is a vector of fonts, loaded with a delay. The
+;; vector should be sorted according to ascending design size.
+(define-public (add-music-fonts node name family design-size-alist factor)
+ "Setup music fonts.
+
+Arguments:
+ NODE the font tree to modify.
+ NAME is the basename for the music font. NAME-DESIGNSIZE.otf should be the music font,
+ NAME-brace.otf should have piano braces.
+ DESIGN-SIZE-ALIST is a list of (ROUNDED . DESIGN-SIZE). ROUNDED is
+ as suffix for font filenames, while DESIGN-SIZE should be the actual
+ design size. The latter is used for text fonts loaded through
+ pango/fontconfig
+ FACTOR is size factor relative to default size that is being used.
+ This is used to select the proper design size for the text fonts.
+"
+ (for-each
+ (lambda (x)
+ (add-font node
+ (list (cons 'font-encoding (car x))
+ (cons 'font-family family))
+ (cons (* factor (cadr x))
+ (caddr x))))
+
+ `((fetaText ,(ly:pt 20.0)
+ ,(list->vector
+ (map (lambda (tup)
+ (cons (ly:pt (cdr tup))
+ (format "~a-~a ~a"
+ name
+ (car tup)
+ (ly:pt (cdr tup)))))
+ design-size-alist)))
+ (fetaMusic ,(ly:pt 20.0)
+ ,(list->vector
+ (map (lambda (size-tup)
+ (delay (ly:system-font-load
+ (format "~a-~a" name (car size-tup)))))
+ design-size-alist
+ )))
+ (fetaBraces ,(ly:pt 20.0)
+ #(,(delay (ly:system-font-load
+ (format "~a-brace" name)))))
+ )))
+
+(define-public (add-pango-fonts node lily-family family factor)
+ ;; Synchronized with the `text-font-size' variable in
+ ;; layout-set-absolute-staff-size-in-module (see paper.scm).
+ (define text-font-size (ly:pt (* factor 11.0)))
+
+ (define (add-node shape series)
+ (add-font node
+ `((font-family . ,lily-family)
+ (font-shape . ,shape)
+ (font-series . ,series)
+ (font-encoding . latin1) ;; ugh.
+ )
+ `(,text-font-size
+ . #(,(cons
+ (ly:pt 12)
+ (ly:make-pango-description-string
+ `(((font-family . ,family)
+ (font-series . ,series)
+ (font-shape . ,shape)))
+ (ly:pt 12)))))))
+
+ (add-node 'upright 'normal)
+ (add-node 'caps 'normal)
+ (add-node 'upright 'bold)
+ (add-node 'italic 'normal)
+ (add-node 'italic 'bold))
+
+(define-public (make-pango-font-tree roman-str sans-str typewrite-str factor)
+ (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
+ (add-music-fonts n "emmentaler" 'feta feta-design-size-mapping factor)
+ (add-pango-fonts n 'roman roman-str factor)
+ (add-pango-fonts n 'sans sans-str factor)
+ (add-pango-fonts n 'typewriter typewrite-str factor)
+ n))
+(define-public (make-century-schoolbook-tree factor)
+ (make-pango-font-tree
+ "Century Schoolbook L,serif"
+ "sans-serif" "monospace" factor))
-(define-public (make-font-tree factor)
- (let*
- ((n (make-font-tree-node 'font-encoding 'music))
- )
-
- (for-each
- (lambda (x)
- (add-font n
- (list (cons 'font-encoding (car x)))
- (cons (* factor (cadr x))
- (caddr x))))
- '((number 10
- #((3.82 . "feta-nummer4")
- (5.5 . "feta-nummer6")
- (8.0 . "feta-nummer8")
- (10.0 . "feta-nummer10")
- (12.0 . "feta-nummer12")
- (16.0 . "feta-nummer16")))
- (dynamic 14.0 #((6.0 . "feta-din6")
- (8.0 . "feta-din8")
- (10.0 . "feta-din10")
- (12.0 . "feta-din12")
- (14.0 . "feta-din14")
- (17.0 . "feta-din17")
- ))
- (math 10 #((10.0 . "msam10")))
- (music 20.0
- #((11.22 . ("feta11" "parmesan11"))
- (12.60 . ("feta13" "parmesan13"))
- (14.14 . ("feta14" "parmesan14"))
- (15.87 . ("feta16" "parmesan16"))
- (17.82 . ("feta18" "parmesan18"))
- (20.0 . ("feta20" "parmesan20"))
- (22.45 . ("feta23" "parmesan23"))
- (25.20 . ("feta26" "parmesan26"))
- ))
- (braces 10 #((10.0 . ("feta-braces00"
- "feta-braces10"
- "feta-braces20"
- "feta-braces30"
- "feta-braces40"
- "feta-braces50"
- "feta-braces60"
- "feta-braces70"
- "feta-braces80"))
- ))))
-
- (for-each
- (lambda (x)
- (add-font
- n
- `((font-encoding . text)
- (font-series . ,(vector-ref (car x) 2))
- (font-shape . ,(vector-ref (car x) 1))
- (font-family . ,(vector-ref (car x) 0)))
- (cons (* factor (cadr x))
- (cddr x))
- ))
- '((#(roman upright medium) .
- (10.0 . #((6.0 . "cmr6")
- (8.0 . "cmr8")
- (10.0 . "cmr10")
- (17.0 . "cmr17")
- )))
-
- (#(roman upright bold) .
- (10.0 . #((6.0 . "cmbx6")
- (8.0 . "cmbx8")
- (10.0 . "cmbx10")
- (12.0 . "cmbx12")
- )))
-
- (#(roman italic medium) .
- (10.0 . #((7.0 . "cmti7")
- (10.0 . "cmti10")
- (12.0 . "cmti12")
- )))
- (#(roman italic bold) .
- (10.0 . #((8.0 . "cmbxti8")
- (10.0 . "cmbxti10")
- (14.0 . "cmbxti14")
- )))
-
- (#(roman caps medium) .
- (10.0 . #((10.0 . "cmcsc10"))))
-
- (#(roman upright bold-narrow ) .
- (10.0 . #((10.0 . "cmb10")
- )))
-
- (#(sans upright medium) .
- (10.0 . #((8.0 . "cmss8")
- (10.0 . "cmss10")
- (12.0 . "cmss12")
- (17.0 . "cmss17")
- )))
- (#(typewriter upright medium) .
- (10.0 . #((8.0 . "cmtt8")
- (10.0 . "cmtt10")
- (12.0 . "cmtt12")
- )))
- ))
- n))
+(define-public all-text-font-encodings
+ '(latin1))
+
+(define-public all-music-font-encodings
+ '(fetaBraces
+ fetaMusic
+ fetaText))
-; (display (make-font-tree 1.0))
+(define-public (magstep s)
+ (exp (* (/ s 6) (log 2))))
-(define-public (magstep x)
- (exp (* (/ x 6) (log 2))))
+(define-public (magnification->font-size m)
+ (* 6 (/ (log m) (log 2))))
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