-;; As an excercise, do it with records.
-;; Should use GOOPS, really.
+;;;; font.scm -- construct font trees
+;;;;
+;;;; source file of the GNU LilyPond music typesetter
+;;;;
+;;;; (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
;; 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") .. )
-;;
(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))
-
-(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
- #(,(delay (ly:font-load "feta-nummer4"))
- ,(delay (ly:font-load "feta-nummer6"))
- ,(delay (ly:font-load "feta-nummer8"))
- ,(delay (ly:font-load "feta-nummer10"))
- ,(delay (ly:font-load "feta-nummer12"))
- ,(delay (ly:font-load "feta-nummer16"))))
- (dynamic 14.0 #(,(delay (ly:font-load "feta-din6"))
- ,(delay (ly:font-load "feta-din8"))
- ,(delay (ly:font-load "feta-din10"))
- ,(delay (ly:font-load "feta-din12"))
- ,(delay (ly:font-load "feta-din14"))
- ,(delay (ly:font-load "feta-din17"))
- ))
- (math 10 #(,(delay (ly:font-load "msam10"))))
- (music 20.0
- #(,(delay (ly:make-virtual-font
- (ly:font-load "feta11")
- (ly:font-load "parmesan11")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta13")
- (ly:font-load "parmesan13")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta14")
- (ly:font-load "parmesan14")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta16")
- (ly:font-load "parmesan16")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta18")
- (ly:font-load "parmesan18")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta20")
- (ly:font-load "parmesan20")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta23")
- (ly:font-load "parmesan23")))
- ,(delay (ly:make-virtual-font
- (ly:font-load "feta26")
- (ly:font-load "parmesan26")))
- ))
-
- (braces 10 #(,(delay
- (ly:make-virtual-font
- (ly:font-load "feta-braces00")
- (ly:font-load "feta-braces10")
- (ly:font-load "feta-braces20")
- (ly:font-load "feta-braces30")
- (ly:font-load "feta-braces40")
- (ly:font-load "feta-braces50")
- (ly:font-load "feta-braces60")
- (ly:font-load "feta-braces70")
- (ly:font-load "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 . #(,(delay (ly:font-load "cmr6"))
- ,(delay (ly:font-load "cmr8"))
- ,(delay (ly:font-load "cmr10"))
- ,(delay (ly:font-load "cmr17"))
- )))
-
- (#(roman upright bold) .
- (10.0 . #(,(delay (ly:font-load "cmbx6"))
- ,(delay (ly:font-load "cmbx8"))
- ,(delay (ly:font-load "cmbx10"))
- ,(delay (ly:font-load "cmbx12"))
- )))
-
- (#(roman italic medium) .
- (10.0 . #(,(delay (ly:font-load "cmti7"))
- ,(delay (ly:font-load "cmti10"))
- ,(delay (ly:font-load "cmti12"))
- )))
- (#(roman italic bold) .
- (10.0 . #(,(delay (ly:font-load "cmbxti8"))
- ,(delay (ly:font-load "cmbxti10"))
- ,(delay (ly:font-load "cmbxti14"))
- )))
-
- (#(roman caps medium) .
- (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
-
- (#(roman upright bold-narrow ) .
- (10.0 . #(,(delay (ly:font-load "cmb10"))
- )))
-
- (#(sans upright medium) .
- (10.0 . #(,(delay (ly:font-load "cmss8"))
- ,(delay (ly:font-load "cmss10"))
- ,(delay (ly:font-load "cmss12"))
- ,(delay (ly:font-load "cmss17"))
- )))
- (#(typewriter upright medium) .
- (10.0 . #(,(delay (ly:font-load "cmtt8"))
- ,(delay (ly:font-load "cmtt10"))
- ,(delay (ly:font-load "cmtt12"))
- )))
- ))
+;; Ugh. Currently, we load the PFB Feta fonts for `fetaDynamic' with
+;; Pango. This should be changed to load the Emmentaler fonts instead
+;; (with Pango too), but then we need support for a `font-style'
+;; property which isn't implemented yet.
+(define feta-alphabet-size-vector
+ (list->vector
+ (map (lambda (tup)
+ (cons (ly:pt (cdr tup))
+ (format "feta-alphabet~a ~a"
+ (car tup)
+ (ly:pt (cdr tup)))))
+ '((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 factor)
+ (for-each
+ (lambda (x)
+ (add-font node
+ (list (cons 'font-encoding (car x)))
+ (cons (* factor (cadr x))
+ (caddr x))))
+ `((fetaDynamic ,(ly:pt 20.0) ,feta-alphabet-size-vector)
+ (fetaNumber ,(ly:pt 20.0) ,feta-alphabet-size-vector)
+ (fetaMusic ,(ly:pt 20.0)
+ #(,(delay (ly:system-font-load "emmentaler-11"))
+ ,(delay (ly:system-font-load "emmentaler-13"))
+ ,(delay (ly:system-font-load "emmentaler-14"))
+ ,(delay (ly:system-font-load "emmentaler-16"))
+ ,(delay (ly:system-font-load "emmentaler-18"))
+ ,(delay (ly:system-font-load "emmentaler-20"))
+ ,(delay (ly:system-font-load "emmentaler-23"))
+ ,(delay (ly:system-font-load "emmentaler-26"))))
+ (fetaBraces ,(ly:pt 20.0)
+ #(,(delay (ly:system-font-load "aybabtu")))))))
+
+(define-public (add-pango-fonts node lily-family family factor)
+ (define (add-node shape series)
+ (add-font node
+ `((font-family . ,lily-family)
+ (font-shape . ,shape)
+ (font-series . ,series)
+ (font-encoding . latin1) ;; ugh.
+ )
+ `(,(ly:pt (* factor 11.0))
+ . #(,(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 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))
-; (display (make-font-tree 1.0))
+(define-public (make-century-schoolbook-tree factor)
+ (make-pango-font-tree
+ "Century Schoolbook L"
+ "Sans" "Mono" factor))
+
+(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))))
projects / lilypond.git / blobdiff