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-design-size) 4)
22 (else (ly-warning "unknown font field name"))
28 ;; most of these routines have been reimplemented in C++
30 ;; TODO TODO . (should not use filtering?)
31 ;; this is bad, since we generate garbage every font-lookup.
32 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
34 (define (filter-field field-name value font-descr-alist)
35 "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE"
37 (lambda (x) (let* (field-value (font-field field-name (car x)))
38 (or (eq? field-value '*) (eq? value field-value))))
42 (define paper-style-sheet-alist
44 ((8 * * braces 8) . "feta-braces8")
45 ((7 * * braces 7) . "feta-braces7")
46 ((6 * * braces 6) . "feta-braces6")
47 ((5 * * braces 5) . "feta-braces5")
48 ((4 * * braces 4) . "feta-braces4")
49 ((3 * * braces 3) . "feta-braces3")
50 ((2 * * braces 2) . "feta-braces2")
51 ((1 * * braces 1) . "feta-braces1")
52 ((0 * * braces 0) . "feta-braces0")
55 ;; FIXME: what about this comment?:
56 ;; should really have name/pt size at the front of the list.
57 ;; (also tried to vary the order of this list, with little effect)
59 ;; (font-relative-size font-series font-shape font-family
61 (define paper20-style-sheet-alist
63 ;; why are font file names strings, not symbols?
64 ((3 medium upright number 13) . "feta-nummer13")
65 ((2 medium upright number 13) . "feta-nummer13")
66 ((1 medium upright number 11) . "feta-nummer11")
67 ((0 medium upright number 10) . "feta-nummer10")
68 ((-1 medium upright number 8) . "feta-nummer8")
69 ((-2 medium upright number 7) . "feta-nummer7")
70 ((-3 medium upright number 6) . "feta-nummer6")
71 ((-4 medium upright number 5) . "feta-nummer5")
72 ((-5 medium upright number 4) . "feta-nummer4")
74 ((4 medium upright roman 17) . "cmr17")
75 ((3 medium upright roman 17) . "cmr17")
76 ((2 medium upright roman 12) . "cmr12")
77 ((1 medium upright roman 12) . "cmr12")
78 ((0 medium upright roman 10) . "cmr10")
79 ((-1 medium upright roman 8) . "cmr8" )
80 ((-2 medium upright roman 7) . "cmr7" )
81 ((-3 medium upright roman 6) . "cmr6" )
82 ((-4 medium upright roman 5) . "cmr5" )
83 ((-5 medium upright roman 5) . "cmr5" )
85 ((3 medium italic roman 12) . "cmti12")
86 ((2 medium italic roman 12) . "cmti12")
87 ((1 medium italic roman 12) . "cmti12") ;;; ugh. Should add magnification here!
88 ((0 medium italic roman 10) . "cmti12")
89 ((-1 medium italic roman 8) . "cmti10")
90 ((-2 medium italic roman 7) . "cmti8")
91 ((-3 medium italic roman 7) . "cmti7")
93 ((4 bold upright roman 17) . "cmbx17")
94 ((3 bold upright roman 17) . "cmbx17")
95 ((2 bold upright roman 14) . "cmbx14")
96 ((1 bold upright roman 12) . "cmbx12")
97 ((0 bold upright roman 10) . "cmbx10")
98 ((-1 bold upright roman 8) . "cmbx8")
99 ((-2 bold upright roman 7) . "cmbx7")
101 ((2 bold italic roman 12) . "cmbxti12")
102 ((1 bold italic roman 12) . "cmbxti12")
103 ((0 bold italic roman 10) . "cmbxti10")
104 ((-1 bold italic roman 8) . "cmbxti8")
105 ((-2 bold italic roman 7) . "cmbxti7")
107 ((4 medium upright typewriter 17) . "cmtt17")
108 ((3 medium upright typewriter 17) . "cmtt17")
109 ((2 medium upright typewriter 12) . "cmtt12")
110 ((1 medium upright typewriter 12) . "cmtt12")
111 ((0 medium upright typewriter 10) . "cmtt10")
112 ((-1 medium upright typewriter 8) . "cmtt8" )
113 ((-2 medium upright typewriter 7) . "cmtt7" )
114 ((-3 medium upright typewriter 6) . "cmtt6" )
115 ((-4 medium upright typewriter 5) . "cmtt5" )
116 ((-5 medium upright typewriter 5) . "cmtt5" )
118 ((3 medium caps roman 12) . "cmcsc12")
119 ((2 medium caps roman 12) . "cmcsc12")
120 ((1 medium caps roman 12) . "cmcsc12")
121 ((0 medium caps roman 10) . "cmcsc10")
122 ((-1 medium caps roman 8) . "cmcsc8")
123 ((-2 medium caps roman 7) . "cmcsc7")
124 ((-3 medium caps roman 7) . "cmcsc7")
126 ((3 * * dynamic 19) . "feta-din19")
127 ((2 * * dynamic 19) . "feta-din19")
128 ((1 * * dynamic 17) . "feta-din17")
129 ((0 * * dynamic 14) . "feta-din14")
130 ((-1 * * dynamic 12) . "feta-din12")
131 ((-2 * * dynamic 9) . "feta-din9")
132 ((-3 * * dynamic 8) . "feta-din8")
133 ((-4 * * dynamic 7) . "feta-din7")
134 ((-5 * * dynamic 6) . "feta-din6")
136 ((2 * * music 26) . "feta26")
137 ((1 * * music 23) . "feta23")
138 ((0 * * music 20) . "feta20")
139 ((-0.5 * * music 20) . "feta19")
140 ((-1 * * music 16) . "feta16")
141 ((-2 * * music 13) . "feta13")
142 ((-3 * * music 11) . "feta11")
143 ((-4 * * music 11) . "feta11")
145 ((2 * * ancient 26) . "parmesan26")
146 ((1 * * ancient 23) . "parmesan23")
147 ((0 * * ancient 20) . "parmesan20")
148 ((-0.5 * * ancient 20) . "parmesan19")
149 ((-1 * * ancient 16) . "parmesan16")
150 ((-2 * * ancient 13) . "parmesan13")
151 ((-3 * * ancient 11) . "parmesan11")
152 ((-4 * * ancient 11) . "parmesan11")
154 ((0 * * math 10) . "msam10")
155 ((-1 * * math 10) . "msam10")
156 ((-2 * * math 10) . "msam10")
157 ((-3 * * math 10) . "msam10")
161 (define (change-relative-size font-desc decrement)
162 "return a FONT-DESCR with relative size decremented by DECREMENT"
163 (cons (- (car font-desc) decrement) (cdr font-desc))
167 (define (map-alist-keys func list)
168 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
171 (cons (cons (func (caar list)) (cdar list))
172 (map-alist-keys func (cdr list)))
177 (define (map-alist-vals func list)
178 "map a function FUNC over the vals of LIST, leaving the keys."
181 (cons (cons (caar list) (func (cdar list)))
182 (map-alist-vals func (cdr list)))
185 (define (change-style-sheet-relative-size sheet x)
186 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
189 ;; make style sheet for each paper version.
190 (define font-list-alist
191 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
192 paper20-style-sheet-alist x))
204 (define (make-style-sheet sym)
205 `((fonts . ,(append paper-style-sheet-alist
206 (cdr (assoc sym font-list-alist))))
208 . ((font-family . music)
209 (font-relative-size . 0)
210 (font-shape . upright)
211 (font-series . medium)
214 . ((finger . ((font-family . number) (font-relative-size . -3)))
215 (volta . ((font-family . number) (font-relative-size . -2)))
216 (tuplet . ((font-family . roman) (font-shape . italic) (font-relative-size . -1)))
218 (timesig . ((font-family . number) ))
219 (timesig-symbol . ((font-family . music) ))
221 (mmrest . ((font-family . number) ))
222 (mmrest-symbol . ((font-family . music) ))
224 (mark-number . ((font-family . number) (font-relative-size . 1)))
225 (mark-letter . ((font-family . roman)
227 (font-shape . upright)
228 (font-relative-size . 2)))
230 (script . ((font-family . roman) (font-relative-size . -1)))
231 (large . ((font-family . roman) (font-relative-size . 1)))
232 (Large . ((font-series . bold) (font-family . roman)
233 (font-relative-size . 2)))
234 (dynamic . ((font-family . dynamic) (font-relative-size . 0)))
236 (properties-to-font .
237 ,Font_interface::properties_to_font_name)
239 (markup-to-properties . ,markup-to-properties)
241 . ((columns . ((axis . 0)))
242 (lines . ((axis . 1)))
243 (roman . ((font-family . roman)))
244 (music . ((font-family . music) (lookup . name)))
245 (finger . ((font-style . finger)))
246 (bold . ((font-series . bold)))
247 (upright . ((font-shape . upright)))
248 (italic . ((font-shape . italic)))
249 (named . ((lookup . name)))
250 (overstrike . ((extent . (0 . 0))))
251 (super . ((raise . 1) (font-relative-size . -1) (extent . (0 . 0))))
252 (sub . ((raise . -1) (font-relative-size . -1) (extent . (0 . 0))))
253 (text . ((lookup . value)))
260 (define (qualifiers-to-fontnames qualifiers font-descr-alist)
261 " reduce the font list by successively applying a font-qualifier."
262 (if (null? qualifiers)
265 (qualifiers-to-fontnames
267 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
271 (define (wild-eq? x y)
276 (define (font-qualifies? qualifiers font-desc)
277 "does FONT-DESC satisfy QUALIFIERS?"
278 (if (null? qualifiers) #t
279 (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
280 (font-qualifies? (cdr qualifiers) font-desc)
283 (define (find-first-font qualifiers fonts)
286 (if (font-qualifies? qualifiers (caar fonts))
288 (find-first-font qualifiers (cdr fonts))
293 (define (select-unique-font qualifiers fonts)
294 "return a single font from FONTS (or a default, if none found)
295 and warn if the selected font is not unique.
298 (err (current-error-port))
302 (if (not (= (length fonts) 1))
304 (display "\ncouldn't find unique font satisfying " err)
305 (write qualifiers err)
306 (display " found " err)
309 (write (map cdr fonts) err))
314 (cdar fonts)) ; return the topmost.
319 (define (chain-assoc x alist-list)
320 (if (null? alist-list)
322 (let* ((handle (assoc x (car alist-list))))
325 (chain-assoc x (cdr alist-list))))))
328 ;; the C++ version in font-interface.cc is usually used.
330 ;; FIXME: this has silently been broken by the introduction
331 ;; of wildcards in the font list.
332 (define (properties-to-font-name fonts properties-alist-list)
334 ;; change order to change priorities of qualifiers.
335 (q-order '(font-family font-series font-shape
336 font-design-size font-relative-size))
337 (rawqualifiers (map (lambda (x)
338 (chain-assoc x properties-alist-list))
340 (qualifiers (filter-list pair? rawqualifiers))
341 (selected (find-first-font qualifiers fonts))
342 (err (current-error-port)))
344 (if (equal? selected "")
346 (display "\ncouldn't find any font satisfying " err)
347 (write qualifiers err)
350 selected) ; return the topmost.
353 (define (markup-to-properties sheet markup)
354 ;; (display "markup: `")
359 ;; This is hairy. We want to allow:
360 ;; ((foo bar) "text")
361 ;; ((foo (bar . 1)) "text")
364 (if (and (symbol? (car markup))
365 (or (not (pair? (cdr markup)))
366 (number? (cadr markup))))
367 (if (equal? '() (cdr markup))
368 (markup-to-properties sheet (car markup))
371 (if (equal? '() (cdr markup))
372 (markup-to-properties sheet (car markup))
373 (append (markup-to-properties sheet (car markup))
374 (markup-to-properties sheet (cdr markup)))))
376 ;; markup is single abbreviation
377 (let ((entry (assoc markup
379 (append (cdr (assoc 'abbreviation-alist sheet))
380 (cdr (assoc 'style-alist sheet))))))
383 (list (cons markup #t))))))
386 ; fixme, how's this supposed to work?
387 ; and why don't we import font-setting from elt?
388 (define (style-to-font-name sheet style)
389 (let* ((entry (assoc style style-to-font-alist))
390 (qualifiers (if entry (cdr entry) '()))
391 (font (find-first-font qualifiers sheet))
392 (err (current-error-port))
397 (display "\ncouldn't find any font satisfying " err)
398 (write qualifiers err)
401 font) ; return the topmost.
405 (define (test-module)
406 (display (filter-list pair? '(1 2 (1 2) (1 .2)))
407 (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
409 (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
410 (display (style-to-font-name 'paper20 'large))