X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Ffont.scm;h=662f655a8d5c1045ea12ad710d82ac8da07c16d0;hb=17f11c2f5ab963bfb07b7652b4860dc4dda5540a;hp=e6c46e7ba1d2db7d761b6d212de8e8ba3c7514c8;hpb=0c1ce854cfb2b9ad594526e359ec206fdd9b21fe;p=lilypond.git diff --git a/scm/font.scm b/scm/font.scm index e6c46e7ba1..662f655a8d 100644 --- a/scm/font.scm +++ b/scm/font.scm @@ -1,396 +1,245 @@ -;;; -;;; font.scm -- implement Font stuff -;;; -;;; source file of the GNU LilyPond music typesetter -;;; -;;; (c) 2000--2001 Jan Nieuwenhuizen -;;; - -(define style-to-font-alist - `( -)) - -(define (font-field name font-descr) - (list-ref - font-descr - (cond - ((eq? name 'font-relative-size) 0) - ((eq? name 'font-series) 1) - ((eq? name 'font-shape) 2) - ((eq? name 'font-family) 3) - ((eq? name 'font-name) 4) - ((eq? name 'font-design-size) 5) - (else (ly-warning "unknown font field name")) - ) - )) - -;;;;;;;;; TODO TODO . (should not use filtering?) -;; this is bad, since we generate garbage every font-lookup. -;; otoh, if the qualifiers is narrow enough , we don't generate much garbage. - -(define (filter-field field-name value font-descr-alist) - "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE" - (filter-list - (lambda (x) (let* (field-value (font-field field-name (car x))) - (or (eq? field-value '*) (eq? value field-value)))) - font-descr-alist) - ) - -;; should really have name/pt size at the front of the list. +;;;; This file is part of LilyPond, the GNU music typesetter. +;;;; +;;;; Copyright (C) 2004--2010 Han-Wen Nienhuys +;;;; +;;;; 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 . + +;; TODO: ;; -;; (also tried to vary the order of this list, with little effect) -(define paper20-style-sheet-alist - '( - ;; why are font-names strings, not symbols? - ((3 medium upright number feta-nummer 13) . "feta-nummer13") - ((2 medium upright number feta-nummer 13) . "feta-nummer13") - ((1 medium upright number feta-nummer 11) . "feta-nummer11") - ((0 medium upright number feta-nummer 10) . "feta-nummer10") - ((-1 medium upright number feta-nummer 8) . "feta-nummer8") - ((-2 medium upright number feta-nummer 7) . "feta-nummer7") - ((-3 medium upright number feta-nummer 6) . "feta-nummer6") - ((-4 medium upright number feta-nummer 5) . "feta-nummer5") - ((-5 medium upright number feta-nummer 4) . "feta-nummer4") - - ((4 medium upright roman cmr 17) . "cmr17") - ((3 medium upright roman cmr 17) . "cmr17") - ((2 medium upright roman cmr 12) . "cmr12") - ((1 medium upright roman cmr 12) . "cmr12") - ((0 medium upright roman cmr 10) . "cmr10") - ((-1 medium upright roman cmr 8) . "cmr8" ) - ((-2 medium upright roman cmr 7) . "cmr7" ) - ((-3 medium upright roman cmr 6) . "cmr6" ) - ((-4 medium upright roman cmr 5) . "cmr5" ) - ((-5 medium upright roman cmr 5) . "cmr5" ) - - ((3 medium italic roman cmti 12) . "cmti12") - ((2 medium italic roman cmti 12) . "cmti12") - ((1 medium italic roman cmti 12) . "cmti12") - ((0 medium italic roman cmti 10) . "cmti10") - ((-1 medium italic roman cmti 8) . "cmti8") - ((-2 medium italic roman cmti 7) . "cmti7") - ((-3 medium italic roman cmti 7) . "cmti7") - - ((2 bold upright roman cmbx 12) . "cmbx12") - ((1 bold upright roman cmbx 12) . "cmbx12") - ((0 bold upright roman cmbx 10) . "cmbx10") - ((-1 bold upright roman cmbx 8) . "cmbx8") - ((-2 bold upright roman cmbx 7) . "cmbx7") - - ((2 bold italic roman cmbxti 12) . "cmbxti12") - ((1 bold italic roman cmbxti 12) . "cmbxti12") - ((0 bold italic roman cmbxti 10) . "cmbxti10") - ((-1 bold italic roman cmbxti 8) . "cmbxti8") - ((-2 bold italic roman cmbxti 7) . "cmbxti7") - - ((4 medium upright typewriter cmtt 17) . "cmtt17") - ((3 medium upright typewriter cmtt 17) . "cmtt17") - ((2 medium upright typewriter cmtt 12) . "cmtt12") - ((1 medium upright typewriter cmtt 12) . "cmtt12") - ((0 medium upright typewriter cmtt 10) . "cmtt10") - ((-1 medium upright typewriter cmtt 8) . "cmtt8" ) - ((-2 medium upright typewriter cmtt 7) . "cmtt7" ) - ((-3 medium upright typewriter cmtt 6) . "cmtt6" ) - ((-4 medium upright typewriter cmtt 5) . "cmtt5" ) - ((-5 medium upright typewriter cmtt 5) . "cmtt5" ) - - ((3 medium caps roman cmcsc 12) . "cmcsc12") - ((2 medium caps roman cmcsc 12) . "cmcsc12") - ((1 medium caps roman cmcsc 12) . "cmcsc12") - ((0 medium caps roman cmcsc 10) . "cmcsc10") - ((-1 medium caps roman cmcsc 8) . "cmcsc8") - ((-2 medium caps roman cmcsc 7) . "cmcsc7") - ((-3 medium caps roman cmcsc 7) . "cmcsc7") - - ;; smallest needs 8 steps: -3 to +5, so - ;; biggest also needs 8 available steps: +2 to + 10 - ((10 * * braces feta-braces 3) . "feta-braces3") - ((9 * * braces feta-braces 3) . "feta-braces3") - ((8 * * braces feta-braces 3) . "feta-braces3") - ((7 * * braces feta-braces 3) . "feta-braces3") - ((6 * * braces feta-braces 3) . "feta-braces3") - ((5 * * braces feta-braces 3) . "feta-braces3") - ((4 * * braces feta-braces 2) . "feta-braces2") - ((3 * * braces feta-braces 1) . "feta-braces1") - ((2 * * braces feta-braces 0) . "feta-braces0") - ((1 * * braces feta-braces 0) . "feta-braces0") - ((0 * * braces feta-braces 0) . "feta-braces0") - ((-1 * * braces feta-braces 0) . "feta-braces0") - ((-2 * * braces feta-braces 0) . "feta-braces0") - ((-3 * * braces feta-braces 0) . "feta-braces0") - - ((3 * * dynamic feta-din 19) . "feta-din19") - ((2 * * dynamic feta-din 19) . "feta-din19") - ((1 * * dynamic feta-din 17) . "feta-din17") - ((0 * * dynamic feta-din 14) . "feta-din14") - ((-1 * * dynamic feta-din 12) . "feta-din12") - ((-2 * * dynamic feta-din 9) . "feta-din9") - ((-3 * * dynamic feta-din 8) . "feta-din8") - ((-4 * * dynamic feta-din 7) . "feta-din7") - ((-5 * * dynamic feta-din 6) . "feta-din6") - - ((2 * * music feta 26) . "feta26") - ((1 * * music feta 23) . "feta23") - ((0 * * music feta 20) . "feta20") - ((-0.5 * * music feta 20) . "feta19") - ((-1 * * music feta 16) . "feta16") - ((-2 * * music feta 13) . "feta13") - ((-3 * * music feta 11) . "feta11") - ((-4 * * music feta 11) . "feta11") - - ((0 * * math msam 10) . "msam10") - ((-1 * * math msam 10) . "msam10") - ((-2 * * math msam 10) . "msam10") - ((-3 * * math msam 10) . "msam10") - )) - -;; -(define (change-relative-size font-desc decrement) - "return a FONT-DESCR with relative size decremented by DECREMENT" - (cons (- (car font-desc) decrement) (cdr font-desc)) - ) - -;; -(define (map-alist-keys func list) - "map a function FUNC over the keys of an alist LIST, leaving the vals. " - (if (null? list) - '() - (cons (cons (func (caar list)) (cdar list)) - (map-alist-keys func (cdr list))) - )) - -;; -(define (map-alist-vals func list) - "map a function FUNC over the vals of LIST, leaving the keys." - (if (null? list) - '() - (cons (cons (caar list) (func (cdar list))) - (map-alist-vals func (cdr list))) - )) - -(define (change-style-sheet-relative-size sheet x) - (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet)) - - -;; make style sheet for each paper version. -(define font-list-alist - (map-alist-vals (lambda (x) (change-style-sheet-relative-size - paper20-style-sheet-alist x)) - '((paper11 . -3) - (paper13 . -2) - (paper16 . -1) - (paper19 . -0.5) - (paper20 . 0) - (paper23 . 1) - (paper26 . 2) - )) - ) - - -(define (make-style-sheet sym) - `((fonts . ,(cdr (assoc sym font-list-alist))) - (font-defaults - . ((font-family . music) - (font-relative-size . 0) - (font-shape . upright) - (font-series . medium) - )) - (style-alist - . ((finger . ((font-family . number) (font-relative-size . -3))) - (volta . ((font-family . number) (font-relative-size . -2))) - (tuplet . ((font-family . roman) (font-shape . italic) (font-relative-size . -1))) - - (timesig . ((font-family . number) (font-relative-size . 0))) - (timesig-symbol . ((font-family . music) (font-relative-size . 0))) - - (mmrest . ((font-family . number) (font-relative-size . 1))) - (mmrest-symbol . ((font-family . music) (font-relative-size . 0))) - - (mark . ((font-family . number) (font-relative-size . 1))) - (script . ((font-family . roman) (font-relative-size . -1))) - (large . ((font-family . roman) (font-relative-size . 1))) - (Large . ((font-series . bold) (font-family . roman) - (font-relative-size . 2))) - (dynamic . ((font-family . dynamic) (font-relative-size . 0))) - )) - (properties-to-font . - ,Font_interface::properties_to_font_name) - - (markup-to-properties . ,markup-to-properties) - (abbreviation-alist - . ((columns . ((axis . 0))) - (lines . ((axis . 1))) - (roman . ((font-family . roman))) - (music . ((font-family . music) (lookup . name))) - (finger . ((font-style . finger))) - (bold . ((font-series . bold))) - (upright . ((font-shape . upright))) - (italic . ((font-shape . italic))) - (named . ((lookup . name))) - (overstrike . ((extent . (0 . 0)))) - (super . ((raise . 1) (font-relative-size . -1) (extent . (0 . 0)))) - (sub . ((raise . -1) (font-relative-size . -1) (extent . (0 . 0)))) - (text . ((lookup . value))) - ) - ) - - ) - ) - -(define (qualifiers-to-fontnames qualifiers font-descr-alist) - " reduce the font list by successively applying a font-qualifier." - (if (null? qualifiers) - font-descr-alist - - (qualifiers-to-fontnames - (cdr qualifiers) - (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist) - ) - )) - -(define (wild-eq? x y) - (or (eq? x y) - (eq? x '*) - (eq? y '*))) - -(define (font-qualifies? qualifiers font-desc) - "does FONT-DESC satisfy QUALIFIERS?" - (if (null? qualifiers) #t - (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers)) - (font-qualifies? (cdr qualifiers) font-desc) - #f))) - -(define (find-first-font qualifiers fonts) - (if (null? fonts) - "" - (if (font-qualifies? qualifiers (caar fonts)) - (cdar fonts) - (find-first-font qualifiers (cdr fonts)) - ) - )) - - -(define (select-unique-font qualifiers fonts) - "return a single font from FONTS (or a default, if none found) -and warn if the selected font is not unique. -" - (let* ( - (err (current-error-port)) - ) - - - (if (not (= (length fonts) 1)) - (begin - (display "\ncouldn't find unique font satisfying " err) - (write qualifiers err) - (display " found " err) - (if (null? fonts) - (display "none" err) - (write (map cdr fonts) err)) - )) - - (if (null? fonts) - "cmr10" - (cdar fonts)) ; return the topmost. - - )) - - -(define (chain-assoc x alist-list) - (if (null? alist-list) - #f - (let* ((handle (assoc x (car alist-list)))) - (if (pair? handle) - handle - (chain-assoc x (cdr alist-list)))))) - -;; TODO -;; the C++ version in font-interface.cc is usually used. +;; lookup-font should be written in C. ;; -;; FIXME: this has silently been broken by the introduction -;; of wildcards in the font list. -(define (properties-to-font-name fonts properties-alist-list) - (let* ( - ;; change order to change priorities of qualifiers. - (q-order '(font-name font-family font-series font-shape - font-design-size font-relative-size)) - (rawqualifiers (map (lambda (x) - (chain-assoc x properties-alist-list)) - q-order)) - (qualifiers (filter-list pair? rawqualifiers)) - (selected (find-first-font qualifiers fonts)) - (err (current-error-port))) - - (if (equal? selected "") - (begin - (display "\ncouldn't find any font satisfying " err) - (write qualifiers err) - "cmr10" - ) - selected) ; return the topmost. - )) - -(define (markup-to-properties sheet markup) - ;; (display "markup: `") - ;; (write markup) - ;; (display "'\n") - - (if (pair? markup) - ;; This is hairy. We want to allow: - ;; ((foo bar) "text") - ;; ((foo (bar . 1)) "text") - ;; ((foo . (0 . 1))) - - (if (and (symbol? (car markup)) - (or (not (pair? (cdr markup))) - (number? (cadr markup)))) - (if (equal? '() (cdr markup)) - (markup-to-properties sheet (car markup)) - (list markup)) - - (if (equal? '() (cdr markup)) - (markup-to-properties sheet (car markup)) - (append (markup-to-properties sheet (car markup)) - (markup-to-properties sheet (cdr markup))))) - - ;; markup is single abbreviation - (let ((entry (assoc markup - ;; assoc-chain? - (append (cdr (assoc 'abbreviation-alist sheet)) - (cdr (assoc 'style-alist sheet)))))) - (if entry - (cdr entry) - (list (cons markup #t)))))) - -; fixme, how's this supposed to work? -; and why don't we import font-setting from elt? -(define (style-to-font-name sheet style) - (let* ((entry (assoc style style-to-font-alist)) - (qualifiers (if entry (cdr entry) '())) - (font (find-first-font qualifiers sheet)) - (err (current-error-port)) - ) - - (if (equal? font "") +;; 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 + ()) + +(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-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 - (display "\ncouldn't find any font satisfying " err) - (write qualifiers err) - "cmr10" - ) - font) ; return the topmost. - )) - -(if #f (begin - (define (test-module) - (display (filter-list pair? '(1 2 (1 2) (1 .2))) - (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist)) - - (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist)) - (display (style-to-font-name 'paper20 'large)) - ) - ) - ) - - -) + (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)) + +;; 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) + "Set up 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 + a 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 a size factor relative to the 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 all-text-font-encodings + '(latin1)) + +(define-public all-music-font-encodings + '(fetaBraces + fetaMusic + fetaText)) + +(define-public (magstep s) + (exp (* (/ s 6) (log 2)))) + +(define-public (magnification->font-size m) + (* 6 (/ (log m) (log 2))))