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-point-size) 5)
23 (else (ly-warning "unknown font field name"))
27 (define (filter-list pred? list)
28 "return that part of LIST for which PRED is true."
31 (rest (filter-list pred? (cdr list)))
33 (if (pred? (car list))
34 (cons (car list) rest)
41 ;;;;;;;;; TODO TODO . (should not use filtering?)
42 ;; this is bad, since we generate garbage every font-lookup.
43 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
45 (define (filter-field field-name value font-descr-alist)
46 "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE"
48 (lambda (x) (let* (field-value (font-field field-name (car x)))
49 (or (eq? field-value '*) (eq? value field-value))))
53 ;; should really have name/pt size at the front of the list.
55 ;; (also tried to vary the order of this list, with little effect)
56 (define paper20-style-sheet-alist
58 ((3 medium upright number feta-nummer 13) . "feta-nummer13")
59 ((2 medium upright number feta-nummer 13) . "feta-nummer13")
60 ((1 medium upright number feta-nummer 11) . "feta-nummer11")
61 ((0 medium upright number feta-nummer 10) . "feta-nummer10")
62 ((-1 medium upright number feta-nummer 8) . "feta-nummer8")
63 ((-2 medium upright number feta-nummer 7) . "feta-nummer7")
64 ((-3 medium upright number feta-nummer 6) . "feta-nummer6")
65 ((-4 medium upright number feta-nummer 5) . "feta-nummer5")
66 ((-5 medium upright number feta-nummer 4) . "feta-nummer4")
68 ((4 medium upright roman cmr 17) . "cmr17")
69 ((3 medium upright roman cmr 17) . "cmr17")
70 ((2 medium upright roman cmr 12) . "cmr12")
71 ((1 medium upright roman cmr 12) . "cmr12")
72 ((0 medium upright roman cmr 10) . "cmr10")
73 ((-1 medium upright roman cmr 8) . "cmr8" )
74 ((-2 medium upright roman cmr 7) . "cmr7" )
75 ((-3 medium upright roman cmr 6) . "cmr6" )
76 ((-4 medium upright roman cmr 5) . "cmr5" )
77 ((-5 medium upright roman cmr 5) . "cmr5" )
79 ((3 medium italic roman cmti 12) . "cmti12")
80 ((2 medium italic roman cmti 12) . "cmti12")
81 ((1 medium italic roman cmti 12) . "cmti12")
82 ((0 medium italic roman cmti 10) . "cmti10")
83 ((-1 medium italic roman cmti 8) . "cmti8")
84 ((-2 medium italic roman cmti 7) . "cmti7")
85 ((-3 medium italic roman cmti 7) . "cmti7")
87 ((2 bold upright roman cmbx 12) . "cmbx12")
88 ((1 bold upright roman cmbx 12) . "cmbx12")
89 ((0 bold upright roman cmbx 10) . "cmbx10")
90 ((-1 bold upright roman cmbx 8) . "cmbx8")
91 ((-2 bold upright roman cmbx 7) . "cmbx7")
93 ((4 medium upright typewriter cmtt 17) . "cmtt17")
94 ((3 medium upright typewriter cmtt 17) . "cmtt17")
95 ((2 medium upright typewriter cmtt 12) . "cmtt12")
96 ((1 medium upright typewriter cmtt 12) . "cmtt12")
97 ((0 medium upright typewriter cmtt 10) . "cmtt10")
98 ((-1 medium upright typewriter cmtt 8) . "cmtt8" )
99 ((-2 medium upright typewriter cmtt 7) . "cmtt7" )
100 ((-3 medium upright typewriter cmtt 6) . "cmtt6" )
101 ((-4 medium upright typewriter cmtt 5) . "cmtt5" )
102 ((-5 medium upright typewriter cmtt 5) . "cmtt5" )
104 ;; should use the same brace font every where and fix C++ code.
105 ((2 * * braces feta-braces 26) . "feta-braces26")
106 ((1 * * braces feta-braces 23) . "feta-braces23")
107 ((0 * * braces feta-braces 20) . "feta-braces20")
108 ((-1 * * braces feta-braces 16) . "feta-braces16")
109 ((-2 * * braces feta-braces 13) . "feta-braces13")
110 ((-3 * * braces feta-braces 11) . "feta-braces11")
112 ((3 * * dynamic feta-din 19) . "feta-din19")
113 ((2 * * dynamic feta-din 19) . "feta-din19")
114 ((1 * * dynamic feta-din 17) . "feta-din17")
115 ((0 * * dynamic feta-din 14) . "feta-din14")
116 ((-1 * * dynamic feta-din 12) . "feta-din12")
117 ((-2 * * dynamic feta-din 9) . "feta-din9")
118 ((-3 * * dynamic feta-din 8) . "feta-din8")
119 ((-4 * * dynamic feta-din 7) . "feta-din7")
120 ((-5 * * dynamic feta-din 6) . "feta-din6")
122 ((2 * * music feta 26) . "feta26")
123 ((1 * * music feta 23) . "feta23")
124 ((0 * * music feta 20) . "feta20")
125 ((-0.5 * * music feta 20) . "feta19")
126 ((-1 * * music feta 16) . "feta16")
127 ((-2 * * music feta 13) . "feta13")
128 ((-3 * * music feta 11) . "feta11")
129 ((-4 * * music feta 11) . "feta11")
131 ((0 * * math msam 10) . "msam10")
132 ((-1 * * math msam 10) . "msam10")
133 ((-2 * * math msam 10) . "msam10")
134 ((-3 * * math msam 10) . "msam10")
138 (define (change-relative-size font-desc decrement)
139 "return a FONT-DESCR with relative size decremented by DECREMENT"
140 (cons (- (car font-desc) decrement) (cdr font-desc))
144 (define (map-alist-keys func list)
145 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
148 (cons (cons (func (caar list)) (cdar list))
149 (map-alist-keys func (cdr list)))
153 (define (map-alist-vals func list)
154 "map a function FUNC over the vals of LIST, leaving the keys."
157 (cons (cons (caar list) (func (cdar list)))
158 (map-alist-vals func (cdr list)))
161 (define (change-style-sheet-relative-size sheet x)
162 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
165 ;; make style sheet for each paper version.
166 (define font-list-alist
167 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
168 paper20-style-sheet-alist x))
180 (define (make-style-sheet sym)
181 `((fonts . ,(cdr (assoc sym font-list-alist)))
183 . ((font-family . music)
184 (font-relative-size . 0)
185 (font-shape . upright)
186 (font-series . medium)
189 . ((finger . ((font-family . number) (font-relative-size . -3)))
190 (volta . ((font-family . number) (font-relative-size . -2)))
191 (tuplet . ((font-family . roman) (font-shape . italic) (font-relative-size . -1)))
193 (timesig . ((font-family . number) (font-relative-size . 0)))
194 (timesig-symbol . ((font-family . music) (font-relative-size . 0)))
196 (mmrest . ((font-family . number) (font-relative-size . 1)))
197 (mmrest-symbol . ((font-family . music) (font-relative-size . 0)))
199 (mark . ((font-family . number) (font-relative-size . 1)))
200 (script . ((font-family . roman) (font-relative-size . -1)))
201 (large . ((font-family . roman) (font-relative-size . 1)))
202 (Large . ((font-series . bold) (font-shape . upright)
203 (font-family . roman) (font-relative-size . 2)))
204 (dynamic . ((font-family . dynamic) (font-relative-size . 0)))
206 (properties-to-font .
207 ,Font_interface::properties_to_font_name)
209 ;; FIXME: this is a not-so-cool idea to use ALIGN
210 ;; RAISE, LOOKUP, since they are not proper elt-properties,
211 ;; and might interfere with them.
212 (markup-to-properties . ,markup-to-properties)
214 . ((rows . ((align . 0)))
215 (lines . ((align . 1)))
216 (roman . ((font-family . roman)))
217 (music . ((font-family . music) (lookup . name)))
218 (finger . ((font-style . finger)))
219 (bold . ((font-series . bold)))
220 (italic . ((font-shape . italic)))
221 (named . ((lookup . name)))
222 (super . ((raise . 1) (font-relative-size . -1)))
223 (sub . ((raise . -1) (font-relative-size . -1)))
224 (text . ((lookup . value)))
231 (define (qualifiers-to-fontnames qualifiers font-descr-alist)
232 " reduce the font list by successively applying a font-qualifier."
233 (if (null? qualifiers)
236 (qualifiers-to-fontnames
238 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
242 (define (font-qualifies? qualifiers font-desc)
243 "does FONT-DESC satisfy QUALIFIERS?"
244 (if (null? qualifiers) #t
245 (if (eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
246 (font-qualifies? (cdr qualifiers) font-desc)
252 (define (find-first-font qualifiers fonts)
255 (if (font-qualifies? qualifiers (caar fonts))
257 (find-first-font qualifiers (cdr fonts))
262 (define (select-unique-font qualifiers fonts)
263 "return a single font from FONTS (or a default, if none found)
264 and warn if the selected font is not unique.
267 (err (current-error-port))
271 (if (not (= (length fonts) 1))
273 (display "\ncouldn't find unique font satisfying " err)
274 (write qualifiers err)
275 (display " found " err)
278 (write (map cdr fonts) err))
283 (cdar fonts)) ; return the topmost.
288 (define (chain-assoc x alist-list)
289 (if (null? alist-list)
292 (handle (assoc x (car alist-list)))
296 (chain-assoc x (cdr alist-list))
303 ;; the C++ version in font-interface.cc is usually used.
304 (define (properties-to-font-name fonts properties-alist-list)
306 ;; change order to change priorities of qualifiers.
307 (q-order '(font-name font-family font-series font-shape font-point-size font-relative-size))
308 (rawqualifiers (map (lambda (x) (chain-assoc x properties-alist-list))
310 (qualifiers (filter-list pair? rawqualifiers))
311 (selected (find-first-font qualifiers fonts))
312 (err (current-error-port))
315 (if (equal? selected "")
317 (display "\ncouldn't find any font satisfying " err)
318 (write qualifiers err)
321 selected) ; return the topmost.
324 (define (markup-to-properties sheet markup)
325 ;; (display "markup: `")
330 (if (and (symbol? (car markup)) (not (pair? (cdr markup))))
331 (if (equal? '() (cdr markup))
332 (markup-to-properties sheet (car markup))
335 (if (equal? '() (cdr markup))
336 (markup-to-properties sheet (car markup))
337 (append (markup-to-properties sheet (car markup))
338 (markup-to-properties sheet (cdr markup)))))
340 ;; markup is single abbreviation
341 (let ((entry (assoc markup
343 (append (cdr (assoc 'abbreviation-alist sheet))
344 (cdr (assoc 'style-alist sheet))))))
347 (list (cons markup #t))))))
350 ; fixme, how's this supposed to work?
351 ; and why don't we import font-setting from elt?
352 (define (style-to-font-name sheet style)
353 (let* ((entry (assoc style style-to-font-alist))
354 (qualifiers (if entry (cdr entry) '()))
355 (font (find-first-font qualifiers sheet))
356 (err (current-error-port))
361 (display "\ncouldn't find any font satisfying " err)
362 (write qualifiers err)
365 font) ; return the topmost.
369 (define (test-module)
370 (display (filter-list pair? '(1 2 (1 2) (1 .2)))
371 (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
373 (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
374 (display (style-to-font-name 'paper20 'large))