-;;;; font.scm -- implement Font stuff
-;;;;
-;;;; source file of the GNU LilyPond music typesetter
-;;;;
-;;;; (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
-;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;; As an excercise, do it with records.
+;; Should use GOOPS, really.
-;; Should separate default sizes
-;; into separate list/alist ?
+;; 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>
+ ()
+ )
-"
-Each entry in this vector has the following format
+(define-class <Font-tree-leaf> (<Font-tree-element>)
+ (default-size #:init-keyword #:default-size)
+ (size-vector #:init-keyword #:size-vector))
+(define-class <Font-tree-node> (<Font-tree-element>)
+ (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
+ (default #:init-keyword #:default #:accessor font-default)
+ (children #:init-keyword #:children #:accessor font-children))
- (cons
- #(QUALIFIERS)
- (cons DEFAULT-SIZE
- #(SIZE-FONT-ENTRIES... ) ))
+(define (make-font-tree-leaf size size-font-vector)
+ (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
-where each SIZE-FONT-ENTRY is
+(define (make-font-tree-node
+ qualifier default)
+ (make <Font-tree-node>
+ #:qualifier qualifier
+ #:default default
+ #:children (make-hash-table 11)))
- (cons DESIGN-SIZE FONT-NAME)
+(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"))
-or
- (cons DESIGN-SIZE (list FONT-NAME1 FONT-NAME2 .. ))
+(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)))
+ (make-font-tree-node qual
+ (assoc-get qual fprops)))
+ ))
+ (define (next-qualifier order props)
+ (cond
+ ((and (null? props) (null? order))
+ #f)
+ ((null? props) (car order))
+ ((null? order) (caar props))
+ (else
+ (if (assoc-get (car order) props)
+ (car order)
+ (next-qualifier (cdr order) props))
+ )))
-(define-public (magstep x)
- (exp (* (/ x 6) (log 2))))
+ (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))
+ (hashq-set! (slot-ref node 'children) v child)))
+ (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))
+ (def (font-default node))
+ (val (chain-assoc-get qual alist-chain def))
+ (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)
+ )))
+
+(define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
+ node)
+
+;; two step call is handy for debugging.
+(define (lookup-font node alist-chain)
+ (g-lookup-font node alist-chain))
+
+;
+; 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))))
+ `((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"))
+ ))
+ (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 15 #(,(delay
+ (ly:make-virtual-font
+ (ly:font-load "feta-braces-a")
+ (ly:font-load "feta-braces-b")
+ (ly:font-load "feta-braces-c")
+ (ly:font-load "feta-braces-d")
+ (ly:font-load "feta-braces-e")
+ (ly:font-load "feta-braces-f")
+ (ly:font-load "feta-braces-g")
+ (ly:font-load "feta-braces-h")
+ (ly:font-load "feta-braces-i"))
+ ))))))
+
+
+(define-public (add-cmr-fonts node factor)
+ (add-font
+ node
+ '((font-encoding . math))
+ `((* factor 10) . #(,(delay (ly:font-load "msam10")))))
+
+ (for-each
+ (lambda (x)
+ (add-font
+ node
+ `((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")))))
-(define-public paper20-font-vector
- '((#(medium upright number) .
- (10 . #((10.0 . "feta-nummer10"))))
- (#(medium upright roman) .
- (10.0 . #((6.0 . "cmr6")
- (8.0 . "cmr8")
- (10.0 . "cmr10")
- (17.0 . "cmr17")
- )))
- (#(* * 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"))
- )))
- (#(medium upright sans) .
- (10.0 . #((8.0 . "cmss8")
- (10.0 . "cmss10")
- (12.0 . "cmss12")
- (17.0 . "cmss17")
+ (#(roman upright bold-narrow ) .
+ (10.0 . #(,(delay (ly:font-load "cmb10"))
)))
- (#(medium upright typewriter) .
- (10.0 . #((8.0 . "cmtt8")
- (10.0 . "cmtt10")
- (12.0 . "cmtt12")
- )))
- (#(bold italic roman) .
- (10.0 . #((8.0 . "cmbxti8")
- (10.0 . "cmbxti10")
- (14.0 . "cmbxti14")
- )))
- (#(medium italic roman) .
- (10.0 . #((7.0 . "cmti7")
- (10.0 . "cmti10")
- (12.0 . "cmti12")
- )))
- (#(bold upright roman) .
- (10.0 . #((6.0 . "cmbx6")
- (8.0 . "cmbx8")
- (10.0 . "cmbx10")
- (12.0 . "cmbx12")
- )))
- (#(bold-narrow upright roman) .
- (10.0 . #((10.0 . "cmb10")
- )))
- (#(medium caps roman) .
- (10.0 . #((10.0 . "cmcsc10")
- (12.0 . "cmcsc12"))))
- (#(* * dynamic) .
- (14.0 . #((6.0 . "feta-din6")
- (8.0 . "feta-din8")
- (10.0 . "feta-din10")
- (12.0 . "feta-din10")
- (14.0 . "feta-din14")
- (17.0 . "feta-din17")
+
+ (#(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"))
)))
- (#(* * math) .
- (10.0 . #((10.0 . "msam10"))))
- ))
-
-(define (scale-font-entry entry factor)
- (cons
- (car entry)
- (cons (* (cadr entry) factor)
- (cddr entry))))
-
-(define size-independent-fonts
- '((#(* * braces) .
- (10 . #((10.0 . ("feta-braces00"
- "feta-braces10"
- "feta-braces20"
- "feta-braces30"
- "feta-braces40"
- "feta-braces50"
- "feta-braces60"
- "feta-braces70"
- "feta-braces80")))))))
-
-(define-public (scale-font-list factor)
- (append size-independent-fonts
- (map (lambda (y) (scale-font-entry y factor)) paper20-font-vector)))
+ )))
+
+;; (display (make-font-tree 1.0))
+
+;; Century Schoolbook fonts filenames on Debian/Sid
+(define-public (add-century-schoolbook-fonts node factor)
+
+ (add-font node
+ '((font-family . roman)
+ (font-shape . upright)
+ (font-series . medium)
+ (font-encoding . text))
+ `(10.0 . #(,(delay (ly:font-load "c059013l")))))
+
+ (add-font node
+ '((font-family . roman)
+ (font-shape . italic)
+ (font-series . medium)
+ (font-encoding . text))
+ `(10.0 . #(,(delay (ly:font-load "c059033l")))))
+
+ (add-font node
+ '((font-family . roman)
+ (font-shape . upright)
+ (font-series . bold)
+ (font-encoding . text))
+ `(10.0 . #(,(delay (ly:font-load "c059016l")))))
+
+ (add-font node
+ '((font-family . roman)
+ (font-shape . italic)
+ (font-series . bold)
+ (font-encoding . text))
+ `(10.0 . #(,(delay (ly:font-load "c059036l")))))
+ )
+
+
+(define-public (make-cmr-tree factor)
+
+ (let
+ ((n (make-font-tree-node 'font-encoding 'music)))
+ (add-music-fonts n factor)
+ (add-cmr-fonts n factor)
+ n
+ ))
+
+(define-public (make-century-schoolbook-tree factor)
+
+ (let
+ ((n (make-font-tree-node 'font-encoding 'music)))
+
+ (add-music-fonts n factor)
+ (add-century-schoolbook-fonts n factor)
+ n
+ ))
+
+
+
+(define-public (magstep x)
+ (exp (* (/ x 6) (log 2))))
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