;;;; font.scm -- construct font trees ;;;; ;;;; source file of the GNU LilyPond music typesetter ;;;; ;;;; (c) 2004--2006 Han-Wen Nienhuys ;; TODO: ;; ;; lookup-font should be written in C. ;; (define-class ()) (define-class () (default-size #:init-keyword #:default-size) (size-vector #:init-keyword #:size-vector)) (define-class () (qualifier #:init-keyword #:qualifier #:accessor font-qualifier) (default #:init-keyword #:default #:accessor font-default) (children #:init-keyword #:children #:accessor font-children)) (define (make-font-tree-leaf size size-font-vector) (make #:default-size size #:size-vector size-font-vector)) (define (make-font-tree-node qualifier default) (make #:qualifier qualifier #:default default #:children (make-hash-table 11))) (define-method (display (leaf ) port) (map (lambda (x) (display x port)) (list "#" ))) (define-method (display (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 ) 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))))) (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 ) fprops size-family) (throw "must add to node, not leaf")) (define-method (g-lookup-font (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 ) 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 feta-alphabet-size-vector (if (defined? 'ly:kpathsea-find-file) `#(,(delay (ly:font-load "feta-alphabet11")) ,(delay (ly:font-load "feta-alphabet13")) ,(delay (ly:font-load "feta-alphabet14")) ,(delay (ly:font-load "feta-alphabet16")) ,(delay (ly:font-load "feta-alphabet18")) ,(delay (ly:font-load "feta-alphabet20")) ,(delay (ly:font-load "feta-alphabet23")) ,(delay (ly:font-load "feta-alphabet26"))) (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)))))) (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:font-load "emmentaler-11")) ,(delay (ly:font-load "emmentaler-13")) ,(delay (ly:font-load "emmentaler-14")) ,(delay (ly:font-load "emmentaler-16")) ,(delay (ly:font-load "emmentaler-18")) ,(delay (ly:font-load "emmentaler-20")) ,(delay (ly:font-load "emmentaler-23")) ,(delay (ly:font-load "emmentaler-26")))) (fetaBraces ,(ly:pt 20.0) #(,(delay (ly:font-load "aybabtu"))))))) (define-public (add-cmr-fonts node factor) (add-font node '((font-encoding . TeX-math)) `(,(* factor 10) . #(,(delay (ly:font-load "msam10"))))) (for-each (lambda (x) (add-font node `((font-encoding . TeX-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) . (,(ly:pt 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) . (,(ly:pt 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) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmti7")) ,(delay (ly:font-load "cmti10")) ,(delay (ly:font-load "cmti12"))))) (#(roman italic bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmbxti8")) ,(delay (ly:font-load "cmbxti10")) ,(delay (ly:font-load "cmbxti14"))))) (#(roman caps medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmcsc10"))))) (#(roman upright bold-narrow ) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmb10"))))) (#(sans upright medium) . (,(ly:pt 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) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmtt8")) ,(delay (ly:font-load "cmtt10")) ,(delay (ly:font-load "cmtt12")))))))) ;; Debian lmodern font support. (define-public (add-cork-lm-fonts node factor) (for-each (lambda (x) (add-font node `((font-encoding . cork-lm) (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) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmr6")) ,(delay (ly:font-load "lmr8")) ,(delay (ly:font-load "lmr10")) ,(delay (ly:font-load "lmr17"))))) (#(roman upright bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmbx6")) ,(delay (ly:font-load "lmbx8")) ,(delay (ly:font-load "lmbx10")) ,(delay (ly:font-load "lmbx12"))))) (#(roman italic medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmri7")) ,(delay (ly:font-load "lmri10")) ,(delay (ly:font-load "lmri12"))))) (#(roman italic bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmbxi10"))))) (#(roman caps medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmcsc10"))))) (#(roman upright bold-narrow ) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmb10"))))) (#(sans upright medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmss8")) ,(delay (ly:font-load "lmss10")) ,(delay (ly:font-load "lmss12")) ,(delay (ly:font-load "lmss17"))))) (#(sans upright bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmssbx10"))))) (#(typewriter upright medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmtt8")) ,(delay (ly:font-load "lmtt10")) ,(delay (ly:font-load "lmtt12")))))))) ;; ec-fonts-mftraced font support. (define-public (add-ec-fonts node factor) (for-each (lambda (x) (add-font node `((font-encoding . Extended-TeX-Font-Encoding---Latin) (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) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecrm6")) ,(delay (ly:font-load "ecrm8")) ,(delay (ly:font-load "ecrm10")) ,(delay (ly:font-load "ecrm17"))))) (#(roman upright bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecbx6")) ,(delay (ly:font-load "ecbx8")) ,(delay (ly:font-load "ecbx10")) ,(delay (ly:font-load "ecbx12"))))) (#(roman italic medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecti7")) ,(delay (ly:font-load "ecti10")) ,(delay (ly:font-load "ecti12"))))) (#(roman italic bold) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecbi8")) ,(delay (ly:font-load "ecbi10")) ,(delay (ly:font-load "ecbi14"))))) (#(roman caps medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "eccc10"))))) (#(roman slanted-caps medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecsc10"))))) (#(roman upright bold-narrow ) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecrb10"))))) (#(sans upright medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecss8")) ,(delay (ly:font-load "ecss10")) ,(delay (ly:font-load "ecss12")) ,(delay (ly:font-load "ecss17"))))) (#(typewriter upright medium) . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ectt8")) ,(delay (ly:font-load "ectt10")) ,(delay (ly:font-load "ectt12")))))))) (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-cmr-tree factor) (let* ((n (make-font-tree-node 'font-encoding 'fetaMusic)) (module (resolve-module '(scm kpathsea))) (find (eval 'ly:kpathsea-find-file module)) ) (add-music-fonts n factor) (add-cmr-fonts n factor) (if (find "lmr10.pfb") (add-cork-lm-fonts n factor)) (if (find "ecrm10.pfa") (add-ec-fonts n factor)) n)) (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)) (define-public (make-century-schoolbook-tree factor) (make-pango-font-tree "Century Schoolbook L" "Sans" "Mono" factor)) (define-public (magstep x) (exp (* (/ x 6) (log 2))))