2 ;;; font.scm -- implement Font stuff
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
9 (define (font-field name font-descr)
13 ((eq? name 'font-relative-size) 0)
14 ((eq? name 'font-series) 1)
15 ((eq? name 'font-shape) 2)
16 ((eq? name 'font-family) 3)
17 ((eq? name 'font-design-size) 4)
18 (else (ly:warning "unknown font field name"))
24 ;; most of these routines have been reimplemented in C++
26 ;; TODO TODO . (should not use filtering?)
27 ;; this is bad, since we generate garbage every font-lookup.
28 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
30 (define (filter-field field-name value font-descr-alist)
31 "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE"
33 (lambda (x) (let* (field-value (font-field field-name (car x)))
34 (or (eq? field-value '*) (eq? value field-value))))
39 (define size-independent-fonts
41 ((* * * braces *) . ("feta-braces00"
51 ;; FIXME: what about this comment?:
53 ;; font-lookup seems a little inefficient -- walking this entire list
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
62 (define paper20-style-sheet-alist
64 ;; why are font file names strings, not symbols?
65 ((3 medium upright number 13) . "feta-nummer13")
66 ((2 medium upright number 13) . "feta-nummer13")
67 ((1 medium upright number 11) . "feta-nummer11")
68 ((0 medium upright number 10) . "feta-nummer10")
69 ((-1 medium upright number 8) . "feta-nummer8")
70 ((-2 medium upright number 7) . "feta-nummer7")
71 ((-3 medium upright number 6) . "feta-nummer6")
72 ((-4 medium upright number 5) . "feta-nummer5")
73 ((-5 medium upright number 4) . "feta-nummer4")
75 ((4 medium upright roman 17) . "cmr17")
76 ((3 medium upright roman 17) . "cmr17")
77 ((2 medium upright roman 12) . "cmr12")
78 ((1 medium upright roman 12) . "cmr12")
79 ((0 medium upright roman 10) . "cmr10")
80 ((-1 medium upright roman 8) . "cmr8" )
81 ((-2 medium upright roman 7) . "cmr7" )
82 ((-3 medium upright roman 6) . "cmr6" )
83 ((-4 medium upright roman 5) . "cmr5" )
84 ((-5 medium upright roman 5) . "cmr5" )
86 ((3 medium italic roman 12) . "cmti12")
87 ((2 medium italic roman 12) . "cmti12")
88 ((1 medium italic roman 12) . "cmti12") ;;; ugh. Should add magnification here!
89 ((0 medium italic roman 10) . "cmti10")
90 ((-1 medium italic roman 8) . "cmti8")
91 ((-2 medium italic roman 7) . "cmti7")
92 ((-3 medium italic roman 7) . "cmti7")
94 ;;; cmbx17 is sauter, not commonly available as Type1.
95 ((4 bold upright roman 17) . "cmbx17")
96 ((3 bold upright roman 17) . "cmbx17")
98 ((2 bold upright roman 14) . "cmbx14")
99 ((1 bold upright roman 12) . "cmbx12")
100 ((0 bold upright roman 10) . "cmbx10")
101 ((-1 bold upright roman 8) . "cmbx8")
102 ((-2 bold upright roman 7) . "cmbx7")
104 ((2 bold italic roman 12) . "cmbxti12")
105 ((1 bold italic roman 12) . "cmbxti12")
106 ((0 bold italic roman 10) . "cmbxti10")
108 ((-1 bold italic roman 8) . "cmbxti8")
109 ((-2 bold italic roman 7) . "cmbxti7")
111 ((4 medium upright typewriter 17) . "cmtt17")
112 ((3 medium upright typewriter 17) . "cmtt17")
113 ((2 medium upright typewriter 12) . "cmtt12")
114 ((1 medium upright typewriter 12) . "cmtt12")
115 ((0 medium upright typewriter 10) . "cmtt10")
116 ((-1 medium upright typewriter 8) . "cmtt8" )
117 ((-2 medium upright typewriter 7) . "cmtt7" )
118 ((-3 medium upright typewriter 6) . "cmtt6" )
119 ((-4 medium upright typewriter 5) . "cmtt5" )
120 ((-5 medium upright typewriter 5) . "cmtt5" )
122 ((3 medium caps roman 12) . "cmcsc12")
123 ((2 medium caps roman 12) . "cmcsc12")
124 ((1 medium caps roman 12) . "cmcsc12")
125 ((0 medium caps roman 10) . "cmcsc10")
126 ((-1 medium caps roman 8) . "cmcsc8")
127 ((-2 medium caps roman 7) . "cmcsc7")
128 ((-3 medium caps roman 7) . "cmcsc7")
130 ((3 * * dynamic 19) . "feta-din19")
131 ((2 * * dynamic 19) . "feta-din19")
132 ((1 * * dynamic 17) . "feta-din17")
133 ((0 * * dynamic 14) . "feta-din14")
134 ((-1 * * dynamic 12) . "feta-din12")
135 ((-2 * * dynamic 9) . "feta-din9")
136 ((-3 * * dynamic 8) . "feta-din8")
137 ((-4 * * dynamic 7) . "feta-din7")
138 ((-5 * * dynamic 6) . "feta-din6")
140 ((2 * * music 26) . ("feta26" "parmesan26"))
141 ((1 * * music 23) . ("feta23" "parmesan23"))
142 ((0 * * music 20) . ("feta20" "parmesan20"))
143 ((-1 * * music 16) . ("feta16" "parmesan16"))
144 ((-2 * * music 13) . ("feta13" "parmesan13"))
145 ((-3 * * music 11) . ("feta11" "parmesan11"))
146 ((-4 * * music 11) . ("feta11" "parmesan11"))
148 ((2 * * ancient 26) . ("feta26" "parmesan26"))
149 ((1 * * ancient 23) . ("feta23" "parmesan23"))
150 ((0 * * ancient 20) . ("feta20" "parmesan20"))
151 ((-1 * * ancient 16) . ("feta16" "parmesan16"))
152 ((-2 * * ancient 13) . ("feta13" "parmesan13"))
153 ((-3 * * ancient 11) . ("feta11" "parmesan11"))
154 ((-4 * * ancient 11) . ("feta11" "parmesan11"))
156 ((0 * * math 10) . "msam10")
157 ((-1 * * math 10) . "msam10")
158 ((-2 * * math 10) . "msam10")
159 ((-3 * * math 10) . "msam10")
163 (define (change-relative-size font-desc decrement)
164 "return a FONT-DESCR with relative size decremented by DECREMENT"
166 (if (number? (car font-desc))
167 (cons (- (car font-desc) decrement) (cdr font-desc))
171 (define (change-rhs-size font-desc from to )
172 (cons (car font-desc)
173 (regexp-substitute/global #f from (cdr font-desc) 'pre to 'post))
178 (define (map-alist-keys func list)
179 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
182 (cons (cons (func (caar list)) (cdar list))
183 (map-alist-keys func (cdr list)))
188 (define (map-alist-vals func list)
189 "map a function FUNC over the vals of LIST, leaving the keys."
192 (cons (cons (caar list) (func (cdar list)))
193 (map-alist-vals func (cdr list)))
196 (define (change-style-sheet-relative-size sheet x)
197 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
200 ;; make style sheet for each paper version.
201 (define font-list-alist
202 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
203 paper20-style-sheet-alist x))
214 ;; make a kludged up paper-19 style sheet. Broken by virtual fonts.
217 (set! font-list-alist
221 (map (lambda (x) (change-rhs-size x "20" "19"))
222 paper20-style-sheet-alist))
225 (define-public (make-font-list sym)
226 (append size-independent-fonts
227 (cdr (assoc sym font-list-alist))))
231 (define (wild-eq? x y)
236 (define (font-qualifies? qualifiers font-desc)
237 "does FONT-DESC satisfy QUALIFIERS?"
238 (if (null? qualifiers) #t
239 (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
240 (font-qualifies? (cdr qualifiers) font-desc)
243 (define (find-first-font qualifiers fonts)
246 (if (font-qualifies? qualifiers (caar fonts))
248 (find-first-font qualifiers (cdr fonts))
253 (define (select-unique-font qualifiers fonts)
254 "return a single font from FONTS (or a default, if none found)
255 and warn if the selected font is not unique.
258 (err (current-error-port))
262 (if (not (= (length fonts) 1))
264 (display "\ncouldn't find unique font satisfying " err)
265 (write qualifiers err)
266 (display " found " err)
269 (write (map cdr fonts) err))
274 (cdar fonts)) ; return the topmost.
279 ; there used to be a Scheme properties-to-font-name function,
280 ; but that is superseeded by the C++ version out of speed concerns.
283 (define-public (markup-to-properties abbrev-alist style-alist markup)
285 ;; (display "markup: `")
290 ;; This is hairy. We want to allow:
291 ;; ((foo bar) "text")
292 ;; ((foo (bar . 1)) "text")
295 (if (and (symbol? (car markup))
296 (or (not (pair? (cdr markup)))
297 (number? (cadr markup))))
298 (if (equal? '() (cdr markup))
299 (markup-to-properties abbrev-alist style-alist (car markup))
302 (if (equal? '() (cdr markup))
303 (markup-to-properties abbrev-alist style-alist (car markup))
304 (append (markup-to-properties abbrev-alist style-alist (car markup))
305 (markup-to-properties abbrev-alist style-alist (cdr markup)))))
307 ;; markup is single abbreviation
308 (let ((entry (assoc markup
310 (append abbrev-alist style-alist))))
313 (list (cons markup #t))))))
316 ;;; ascii-script font init
317 (define as-font-sheet-alist
318 '((as5 . (((* * * braces *) . ("as-braces9"))
319 ((* * * number *) . "as-number1")
320 ((0 * * music *) . ("as5"))
321 ((0 * * roman *) . "as-dummy")))
322 (as9 . (((* * * braces *) . ("as-braces9"))
323 ((0 medium upright number 10) . "as-number4")
324 ((* * * number 5) . "as-number1")
325 ((0 * * music *) . ("as9"))
326 ((0 * * roman *) . "as-dummy")))))
328 (define-public (as-make-font-list sym)
329 (set! font-list-alist
330 (append font-list-alist as-font-sheet-alist))
331 (make-font-list sym))