2 ;;; font.scm -- implement Font stuff
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 2000--2001 Jan Nieuwenhuizen <janneke@gnu.org>
9 (define style-to-font-alist
13 (define (font-field name font-descr)
17 ((eq? name 'font-relative-size) 0)
18 ((eq? name 'font-series) 1)
19 ((eq? name 'font-shape) 2)
20 ((eq? name 'font-family) 3)
21 ((eq? name 'font-name) 4)
22 ((eq? name 'font-design-size) 5)
23 (else (ly-warning "unknown font field name"))
29 ;; most of these routines have been reimplemented in C++
31 ;; TODO TODO . (should not use filtering?)
32 ;; this is bad, since we generate garbage every font-lookup.
33 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
35 (define (filter-field field-name value font-descr-alist)
36 "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE"
38 (lambda (x) (let* (field-value (font-field field-name (car x)))
39 (or (eq? field-value '*) (eq? value field-value))))
43 (define paper-style-sheet-alist
45 ((8 * * braces feta-braces 8) . "feta-braces8")
46 ((7 * * braces feta-braces 7) . "feta-braces7")
47 ((6 * * braces feta-braces 6) . "feta-braces6")
48 ((5 * * braces feta-braces 5) . "feta-braces5")
49 ((4 * * braces feta-braces 4) . "feta-braces4")
50 ((3 * * braces feta-braces 3) . "feta-braces3")
51 ((2 * * braces feta-braces 2) . "feta-braces2")
52 ((1 * * braces feta-braces 1) . "feta-braces1")
53 ((0 * * braces feta-braces 0) . "feta-braces0")
56 ;; FIXME: what about this comment?:
57 ;; should really have name/pt size at the front of the list.
58 ;; (also tried to vary the order of this list, with little effect)
60 ;; (font-relative-size font-series font-shape font-family font-name
62 (define paper20-style-sheet-alist
64 ;; why are font file names strings, not symbols?
65 ((3 medium upright number feta-nummer 13) . "feta-nummer13")
66 ((2 medium upright number feta-nummer 13) . "feta-nummer13")
67 ((1 medium upright number feta-nummer 11) . "feta-nummer11")
68 ((0 medium upright number feta-nummer 10) . "feta-nummer10")
69 ((-1 medium upright number feta-nummer 8) . "feta-nummer8")
70 ((-2 medium upright number feta-nummer 7) . "feta-nummer7")
71 ((-3 medium upright number feta-nummer 6) . "feta-nummer6")
72 ((-4 medium upright number feta-nummer 5) . "feta-nummer5")
73 ((-5 medium upright number feta-nummer 4) . "feta-nummer4")
75 ((4 medium upright roman cmr 17) . "cmr17")
76 ((3 medium upright roman cmr 17) . "cmr17")
77 ((2 medium upright roman cmr 12) . "cmr12")
78 ((1 medium upright roman cmr 12) . "cmr12")
79 ((0 medium upright roman cmr 10) . "cmr10")
80 ((-1 medium upright roman cmr 8) . "cmr8" )
81 ((-2 medium upright roman cmr 7) . "cmr7" )
82 ((-3 medium upright roman cmr 6) . "cmr6" )
83 ((-4 medium upright roman cmr 5) . "cmr5" )
84 ((-5 medium upright roman cmr 5) . "cmr5" )
86 ((3 medium italic roman cmti 12) . "cmti12")
87 ((2 medium italic roman cmti 12) . "cmti12")
88 ((1 medium italic roman cmti 12) . "cmti12")
89 ((0 medium italic roman cmti 10) . "cmti10")
90 ((-1 medium italic roman cmti 8) . "cmti8")
91 ((-2 medium italic roman cmti 7) . "cmti7")
92 ((-3 medium italic roman cmti 7) . "cmti7")
94 ((2 bold upright roman cmbx 12) . "cmbx12")
95 ((1 bold upright roman cmbx 12) . "cmbx12")
96 ((0 bold upright roman cmbx 10) . "cmbx10")
97 ((-1 bold upright roman cmbx 8) . "cmbx8")
98 ((-2 bold upright roman cmbx 7) . "cmbx7")
100 ((2 bold italic roman cmbxti 12) . "cmbxti12")
101 ((1 bold italic roman cmbxti 12) . "cmbxti12")
102 ((0 bold italic roman cmbxti 10) . "cmbxti10")
103 ((-1 bold italic roman cmbxti 8) . "cmbxti8")
104 ((-2 bold italic roman cmbxti 7) . "cmbxti7")
106 ((4 medium upright typewriter cmtt 17) . "cmtt17")
107 ((3 medium upright typewriter cmtt 17) . "cmtt17")
108 ((2 medium upright typewriter cmtt 12) . "cmtt12")
109 ((1 medium upright typewriter cmtt 12) . "cmtt12")
110 ((0 medium upright typewriter cmtt 10) . "cmtt10")
111 ((-1 medium upright typewriter cmtt 8) . "cmtt8" )
112 ((-2 medium upright typewriter cmtt 7) . "cmtt7" )
113 ((-3 medium upright typewriter cmtt 6) . "cmtt6" )
114 ((-4 medium upright typewriter cmtt 5) . "cmtt5" )
115 ((-5 medium upright typewriter cmtt 5) . "cmtt5" )
117 ((3 medium caps roman cmcsc 12) . "cmcsc12")
118 ((2 medium caps roman cmcsc 12) . "cmcsc12")
119 ((1 medium caps roman cmcsc 12) . "cmcsc12")
120 ((0 medium caps roman cmcsc 10) . "cmcsc10")
121 ((-1 medium caps roman cmcsc 8) . "cmcsc8")
122 ((-2 medium caps roman cmcsc 7) . "cmcsc7")
123 ((-3 medium caps roman cmcsc 7) . "cmcsc7")
125 ((3 * * dynamic feta-din 19) . "feta-din19")
126 ((2 * * dynamic feta-din 19) . "feta-din19")
127 ((1 * * dynamic feta-din 17) . "feta-din17")
128 ((0 * * dynamic feta-din 14) . "feta-din14")
129 ((-1 * * dynamic feta-din 12) . "feta-din12")
130 ((-2 * * dynamic feta-din 9) . "feta-din9")
131 ((-3 * * dynamic feta-din 8) . "feta-din8")
132 ((-4 * * dynamic feta-din 7) . "feta-din7")
133 ((-5 * * dynamic feta-din 6) . "feta-din6")
135 ((2 * * music feta 26) . "feta26")
136 ((1 * * music feta 23) . "feta23")
137 ((0 * * music feta 20) . "feta20")
138 ((-0.5 * * music feta 20) . "feta19")
139 ((-1 * * music feta 16) . "feta16")
140 ((-2 * * music feta 13) . "feta13")
141 ((-3 * * music feta 11) . "feta11")
142 ((-4 * * music feta 11) . "feta11")
144 ((0 * * math msam 10) . "msam10")
145 ((-1 * * math msam 10) . "msam10")
146 ((-2 * * math msam 10) . "msam10")
147 ((-3 * * math msam 10) . "msam10")
151 (define (change-relative-size font-desc decrement)
152 "return a FONT-DESCR with relative size decremented by DECREMENT"
153 (cons (- (car font-desc) decrement) (cdr font-desc))
157 (define (map-alist-keys func list)
158 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
161 (cons (cons (func (caar list)) (cdar list))
162 (map-alist-keys func (cdr list)))
166 (define (map-alist-vals func list)
167 "map a function FUNC over the vals of LIST, leaving the keys."
170 (cons (cons (caar list) (func (cdar list)))
171 (map-alist-vals func (cdr list)))
174 (define (change-style-sheet-relative-size sheet x)
175 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
178 ;; make style sheet for each paper version.
179 (define font-list-alist
180 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
181 paper20-style-sheet-alist x))
193 (define (make-style-sheet sym)
194 `((fonts . ,(append paper-style-sheet-alist
195 (cdr (assoc sym font-list-alist))))
197 . ((font-family . music)
198 (font-relative-size . 0)
199 (font-shape . upright)
200 (font-series . medium)
203 . ((finger . ((font-family . number) (font-relative-size . -3)))
204 (volta . ((font-family . number) (font-relative-size . -2)))
205 (tuplet . ((font-family . roman) (font-shape . italic) (font-relative-size . -1)))
207 (timesig . ((font-family . number) ))
208 (timesig-symbol . ((font-family . music) (font-relative-size . 0)))
210 (mmrest . ((font-family . number) (font-relative-size . 1)))
211 (mmrest-symbol . ((font-family . music) (font-relative-size . 0)))
213 (mark . ((font-family . number) (font-relative-size . 1)))
214 (script . ((font-family . roman) (font-relative-size . -1)))
215 (large . ((font-family . roman) (font-relative-size . 1)))
216 (Large . ((font-series . bold) (font-family . roman)
217 (font-relative-size . 2)))
218 (dynamic . ((font-family . dynamic) (font-relative-size . 0)))
220 (properties-to-font .
221 ,Font_interface::properties_to_font_name)
223 (markup-to-properties . ,markup-to-properties)
225 . ((columns . ((axis . 0)))
226 (lines . ((axis . 1)))
227 (roman . ((font-family . roman)))
228 (music . ((font-family . music) (lookup . name)))
229 (finger . ((font-style . finger)))
230 (bold . ((font-series . bold)))
231 (upright . ((font-shape . upright)))
232 (italic . ((font-shape . italic)))
233 (named . ((lookup . name)))
234 (overstrike . ((extent . (0 . 0))))
235 (super . ((raise . 1) (font-relative-size . -1) (extent . (0 . 0))))
236 (sub . ((raise . -1) (font-relative-size . -1) (extent . (0 . 0))))
237 (text . ((lookup . value)))
244 (define (qualifiers-to-fontnames qualifiers font-descr-alist)
245 " reduce the font list by successively applying a font-qualifier."
246 (if (null? qualifiers)
249 (qualifiers-to-fontnames
251 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
255 (define (wild-eq? x y)
260 (define (font-qualifies? qualifiers font-desc)
261 "does FONT-DESC satisfy QUALIFIERS?"
262 (if (null? qualifiers) #t
263 (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
264 (font-qualifies? (cdr qualifiers) font-desc)
267 (define (find-first-font qualifiers fonts)
270 (if (font-qualifies? qualifiers (caar fonts))
272 (find-first-font qualifiers (cdr fonts))
277 (define (select-unique-font qualifiers fonts)
278 "return a single font from FONTS (or a default, if none found)
279 and warn if the selected font is not unique.
282 (err (current-error-port))
286 (if (not (= (length fonts) 1))
288 (display "\ncouldn't find unique font satisfying " err)
289 (write qualifiers err)
290 (display " found " err)
293 (write (map cdr fonts) err))
298 (cdar fonts)) ; return the topmost.
303 (define (chain-assoc x alist-list)
304 (if (null? alist-list)
306 (let* ((handle (assoc x (car alist-list))))
309 (chain-assoc x (cdr alist-list))))))
312 ;; the C++ version in font-interface.cc is usually used.
314 ;; FIXME: this has silently been broken by the introduction
315 ;; of wildcards in the font list.
316 (define (properties-to-font-name fonts properties-alist-list)
318 ;; change order to change priorities of qualifiers.
319 (q-order '(font-name font-family font-series font-shape
320 font-design-size font-relative-size))
321 (rawqualifiers (map (lambda (x)
322 (chain-assoc x properties-alist-list))
324 (qualifiers (filter-list pair? rawqualifiers))
325 (selected (find-first-font qualifiers fonts))
326 (err (current-error-port)))
328 (if (equal? selected "")
330 (display "\ncouldn't find any font satisfying " err)
331 (write qualifiers err)
334 selected) ; return the topmost.
337 (define (markup-to-properties sheet markup)
338 ;; (display "markup: `")
343 ;; This is hairy. We want to allow:
344 ;; ((foo bar) "text")
345 ;; ((foo (bar . 1)) "text")
348 (if (and (symbol? (car markup))
349 (or (not (pair? (cdr markup)))
350 (number? (cadr markup))))
351 (if (equal? '() (cdr markup))
352 (markup-to-properties sheet (car markup))
355 (if (equal? '() (cdr markup))
356 (markup-to-properties sheet (car markup))
357 (append (markup-to-properties sheet (car markup))
358 (markup-to-properties sheet (cdr markup)))))
360 ;; markup is single abbreviation
361 (let ((entry (assoc markup
363 (append (cdr (assoc 'abbreviation-alist sheet))
364 (cdr (assoc 'style-alist sheet))))))
367 (list (cons markup #t))))))
370 ; fixme, how's this supposed to work?
371 ; and why don't we import font-setting from elt?
372 (define (style-to-font-name sheet style)
373 (let* ((entry (assoc style style-to-font-alist))
374 (qualifiers (if entry (cdr entry) '()))
375 (font (find-first-font qualifiers sheet))
376 (err (current-error-port))
381 (display "\ncouldn't find any font satisfying " err)
382 (write qualifiers err)
385 font) ; return the topmost.
389 (define (test-module)
390 (display (filter-list pair? '(1 2 (1 2) (1 .2)))
391 (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
393 (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
394 (display (style-to-font-name 'paper20 'large))