X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Ffont.scm;h=d05cc2fd78efdeddf3d85b7fdc19602bf6e393a3;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=b74d878dfd0cc712aa5009f03b4b0e526628e269;hpb=5a3b9bf6c2c8973485925dea6dcaa77acda18202;p=lilypond.git diff --git a/scm/font.scm b/scm/font.scm index b74d878dfd..d05cc2fd78 100644 --- a/scm/font.scm +++ b/scm/font.scm @@ -1,129 +1,204 @@ -;;;; font.scm -- implement Font stuff +;;;; font.scm -- construct font trees ;;;; -;;;; source file of the GNU LilyPond music typesetter +;;;; source file of the GNU LilyPond music typesetter ;;;; -;;;; (c) 2000--2004 Jan Nieuwenhuizen -;;;; Han-Wen Nienhuys - -(define-public (magstep x) - (exp (* (/ x 6) (log 2)))) - -;; Should separate default sizes -;; into separate list/alist ? - -;; FIXME docstring for paper20-font-vector - """ Entries have the following format - - ( #(SERIES SHAPE FAMILY) . - (DEFAULT-SIZE . #(SIZE-FONT-ENTRY... ) )) - -where SIZE-FONT-ENTRY is - - (DESIGN-SIZE FONT-NAME) - -or - - (DESIGN-SIZE (FONT-NAME1 FONT-NAME2 ... ))""" +;;;; (c) 2004--2008 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-public paper20-font-vector - '((#(medium upright number) . - (10 . #( - (4.0 . "feta-nummer4") - (6.0 . "feta-nummer6") - (8.0 . "feta-nummer8") - (10.0 . "feta-nummer10") - (12.0 . "feta-nummer12") - (16.0 . "feta-nummer16") - - - ) - - - )) - (#(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") - ))) - (#(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")))) - (#(* * 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) . - (10.0 . #((10.0 . "msam10")))) - ;; testing ps-encoding - (#(medium latin1 roman) . - (10.0 . #((12.0 . "ecrm12")))) - (#(bold latin1 roman) . - (10.0 . #((14.0 . "ecbm14")))))) - -(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))) - - + (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)) + + +;; 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)) + +(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 (magnification->font-size m) + (* 6 (/ (log m) (log 2))))