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 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))))
43 (define size-independent-fonts
45 ((* * * braces *) . ("feta-braces00"
55 ;; FIXME: what about this comment?:
57 ;; font-lookup seems a little inefficient -- walking this entire list
60 ;; should really have name/pt size at the front of the list.
61 ;; (also tried to vary the order of this list, with little effect)
63 ;; (font-relative-size font-series font-shape font-family
66 (define paper20-style-sheet-alist
68 ;; why are font file names strings, not symbols?
69 ((3 medium upright number 13) . "feta-nummer13")
70 ((2 medium upright number 13) . "feta-nummer13")
71 ((1 medium upright number 11) . "feta-nummer11")
72 ((0 medium upright number 10) . "feta-nummer10")
73 ((-1 medium upright number 8) . "feta-nummer8")
74 ((-2 medium upright number 7) . "feta-nummer7")
75 ((-3 medium upright number 6) . "feta-nummer6")
76 ((-4 medium upright number 5) . "feta-nummer5")
77 ((-5 medium upright number 4) . "feta-nummer4")
79 ((4 medium upright roman 17) . "cmr17")
80 ((3 medium upright roman 17) . "cmr17")
81 ((2 medium upright roman 12) . "cmr12")
82 ((1 medium upright roman 12) . "cmr12")
83 ((0 medium upright roman 10) . "cmr10")
84 ((-1 medium upright roman 8) . "cmr8" )
85 ((-2 medium upright roman 7) . "cmr7" )
86 ((-3 medium upright roman 6) . "cmr6" )
87 ((-4 medium upright roman 5) . "cmr5" )
88 ((-5 medium upright roman 5) . "cmr5" )
90 ((3 medium italic roman 12) . "cmti12")
91 ((2 medium italic roman 12) . "cmti12")
92 ((1 medium italic roman 12) . "cmti12") ;;; ugh. Should add magnification here!
93 ((0 medium italic roman 10) . "cmti10")
94 ((-1 medium italic roman 8) . "cmti8")
95 ((-2 medium italic roman 7) . "cmti7")
96 ((-3 medium italic roman 7) . "cmti7")
98 ;;; cmbx17 is sauter, not commonly available as Type1.
99 ((4 bold upright roman 17) . "cmbx17")
100 ((3 bold upright roman 17) . "cmbx17")
102 ((2 bold upright roman 14) . "cmbx14")
103 ((1 bold upright roman 12) . "cmbx12")
104 ((0 bold upright roman 10) . "cmbx10")
105 ((-1 bold upright roman 8) . "cmbx8")
106 ((-2 bold upright roman 7) . "cmbx7")
108 ((2 bold italic roman 12) . "cmbxti12")
109 ((1 bold italic roman 12) . "cmbxti12")
110 ((0 bold italic roman 10) . "cmbxti10")
112 ((-1 bold italic roman 8) . "cmbxti8")
113 ((-2 bold italic roman 7) . "cmbxti7")
115 ((4 medium upright typewriter 17) . "cmtt17")
116 ((3 medium upright typewriter 17) . "cmtt17")
117 ((2 medium upright typewriter 12) . "cmtt12")
118 ((1 medium upright typewriter 12) . "cmtt12")
119 ((0 medium upright typewriter 10) . "cmtt10")
120 ((-1 medium upright typewriter 8) . "cmtt8" )
121 ((-2 medium upright typewriter 7) . "cmtt7" )
122 ((-3 medium upright typewriter 6) . "cmtt6" )
123 ((-4 medium upright typewriter 5) . "cmtt5" )
124 ((-5 medium upright typewriter 5) . "cmtt5" )
126 ((3 medium caps roman 12) . "cmcsc12")
127 ((2 medium caps roman 12) . "cmcsc12")
128 ((1 medium caps roman 12) . "cmcsc12")
129 ((0 medium caps roman 10) . "cmcsc10")
130 ((-1 medium caps roman 8) . "cmcsc8")
131 ((-2 medium caps roman 7) . "cmcsc7")
132 ((-3 medium caps roman 7) . "cmcsc7")
134 ((3 * * dynamic 19) . "feta-din19")
135 ((2 * * dynamic 19) . "feta-din19")
136 ((1 * * dynamic 17) . "feta-din17")
137 ((0 * * dynamic 14) . "feta-din14")
138 ((-1 * * dynamic 12) . "feta-din12")
139 ((-2 * * dynamic 9) . "feta-din9")
140 ((-3 * * dynamic 8) . "feta-din8")
141 ((-4 * * dynamic 7) . "feta-din7")
142 ((-5 * * dynamic 6) . "feta-din6")
144 ((2 * * music 26) . ("feta26" "parmesan26"))
145 ((1 * * music 23) . ("feta23" "parmesan23"))
146 ((0 * * music 20) . ("feta20" "parmesan20"))
147 ((-1 * * music 16) . ("feta16" "parmesan16"))
148 ((-2 * * music 13) . ("feta13" "parmesan13"))
149 ((-3 * * music 11) . ("feta11" "parmesan11"))
150 ((-4 * * music 11) . ("feta11" "parmesan11"))
152 ((2 * * ancient 26) . ("feta26" "parmesan26"))
153 ((1 * * ancient 23) . ("feta23" "parmesan23"))
154 ((0 * * ancient 20) . ("feta20" "parmesan20"))
155 ((-1 * * ancient 16) . ("feta16" "parmesan16"))
156 ((-2 * * ancient 13) . ("feta13" "parmesan13"))
157 ((-3 * * ancient 11) . ("feta11" "parmesan11"))
158 ((-4 * * ancient 11) . ("feta11" "parmesan11"))
160 ((0 * * math 10) . "msam10")
161 ((-1 * * math 10) . "msam10")
162 ((-2 * * math 10) . "msam10")
163 ((-3 * * math 10) . "msam10")
167 (define (change-relative-size font-desc decrement)
168 "return a FONT-DESCR with relative size decremented by DECREMENT"
170 (if (number? (car font-desc))
171 (cons (- (car font-desc) decrement) (cdr font-desc))
175 (define (change-rhs-size font-desc from to )
176 (cons (car font-desc)
177 (regexp-substitute/global #f from (cdr font-desc) 'pre to 'post))
182 (define (map-alist-keys func list)
183 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
186 (cons (cons (func (caar list)) (cdar list))
187 (map-alist-keys func (cdr list)))
192 (define (map-alist-vals func list)
193 "map a function FUNC over the vals of LIST, leaving the keys."
196 (cons (cons (caar list) (func (cdar list)))
197 (map-alist-vals func (cdr list)))
200 (define (change-style-sheet-relative-size sheet x)
201 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
204 ;; make style sheet for each paper version.
205 (define font-list-alist
206 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
207 paper20-style-sheet-alist x))
218 ;; make a kludged up paper-19 style sheet. Broken by virtual fonts.
221 (set! font-list-alist
225 (map (lambda (x) (change-rhs-size x "20" "19"))
226 paper20-style-sheet-alist))
229 (define-public (make-font-list sym)
230 (append size-independent-fonts
231 (cdr (assoc sym font-list-alist))))
235 (define (wild-eq? x y)
240 (define (font-qualifies? qualifiers font-desc)
241 "does FONT-DESC satisfy QUALIFIERS?"
242 (if (null? qualifiers) #t
243 (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
244 (font-qualifies? (cdr qualifiers) font-desc)
247 (define (find-first-font qualifiers fonts)
250 (if (font-qualifies? qualifiers (caar fonts))
252 (find-first-font qualifiers (cdr fonts))
257 (define (select-unique-font qualifiers fonts)
258 "return a single font from FONTS (or a default, if none found)
259 and warn if the selected font is not unique.
262 (err (current-error-port))
266 (if (not (= (length fonts) 1))
268 (display "\ncouldn't find unique font satisfying " err)
269 (write qualifiers err)
270 (display " found " err)
273 (write (map cdr fonts) err))
278 (cdar fonts)) ; return the topmost.
283 ; there used to be a Scheme properties-to-font-name function,
284 ; but that is superseeded by the C++ version out of speed concerns.
287 (define-public (markup-to-properties abbrev-alist style-alist markup)
289 ;; (display "markup: `")
294 ;; This is hairy. We want to allow:
295 ;; ((foo bar) "text")
296 ;; ((foo (bar . 1)) "text")
299 (if (and (symbol? (car markup))
300 (or (not (pair? (cdr markup)))
301 (number? (cadr markup))))
302 (if (equal? '() (cdr markup))
303 (markup-to-properties abbrev-alist style-alist (car markup))
306 (if (equal? '() (cdr markup))
307 (markup-to-properties abbrev-alist style-alist (car markup))
308 (append (markup-to-properties abbrev-alist style-alist (car markup))
309 (markup-to-properties abbrev-alist style-alist (cdr markup)))))
311 ;; markup is single abbreviation
312 (let ((entry (assoc markup
314 (append abbrev-alist style-alist))))
317 (list (cons markup #t))))))
320 ; fixme, how's this supposed to work?
321 ; and why don't we import font-setting from elt?
322 (define (style-to-font-name sheet style)
323 (let* ((entry (assoc style style-to-font-alist))
324 (qualifiers (if entry (cdr entry) '()))
325 (font (find-first-font qualifiers sheet))
326 (err (current-error-port))
331 (display "\ncouldn't find any font satisfying " err)
332 (write qualifiers err)
335 font) ; return the topmost.
339 (define (test-module)
340 (display (filter pair? '(1 2 (1 2) (1 .2)))
341 (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
343 (display (style-to-font-name 'paper20 'large)))
346 ;;; ascii-script font init
347 (define as-font-sheet-alist
348 '((as5 . (((* * * braces *) . ("as-braces9"))
349 ((* * * number *) . "as-number1")
350 ((0 * * music *) . ("as5"))
351 ((0 * * roman *) . "as-dummy")))
352 (as9 . (((* * * braces *) . ("as-braces9"))
353 ((0 medium upright number 10) . "as-number4")
354 ((* * * number 5) . "as-number1")
355 ((0 * * music *) . ("as9"))
356 ((0 * * roman *) . "as-dummy")))))
358 (define-public (as-make-font-list sym)
359 (set! font-list-alist
360 (append font-list-alist as-font-sheet-alist))
361 (make-font-list sym))