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"))
27 ;;;;;;;;; TODO TODO . (should not use filtering?)
28 ;; this is bad, since we generate garbage every font-lookup.
29 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
31 (define (filter-field field-name value font-descr-alist)
32 "return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE"
34 (lambda (x) (let* (field-value (font-field field-name (car x)))
35 (or (eq? field-value '*) (eq? value field-value))))
39 ;; should really have name/pt size at the front of the list.
41 ;; (also tried to vary the order of this list, with little effect)
42 (define paper20-style-sheet-alist
44 ;; why are font-names strings, not symbols?
45 ((3 medium upright number feta-nummer 13) . "feta-nummer13")
46 ((2 medium upright number feta-nummer 13) . "feta-nummer13")
47 ((1 medium upright number feta-nummer 11) . "feta-nummer11")
48 ((0 medium upright number feta-nummer 10) . "feta-nummer10")
49 ((-1 medium upright number feta-nummer 8) . "feta-nummer8")
50 ((-2 medium upright number feta-nummer 7) . "feta-nummer7")
51 ((-3 medium upright number feta-nummer 6) . "feta-nummer6")
52 ((-4 medium upright number feta-nummer 5) . "feta-nummer5")
53 ((-5 medium upright number feta-nummer 4) . "feta-nummer4")
55 ((4 medium upright roman cmr 17) . "cmr17")
56 ((3 medium upright roman cmr 17) . "cmr17")
57 ((2 medium upright roman cmr 12) . "cmr12")
58 ((1 medium upright roman cmr 12) . "cmr12")
59 ((0 medium upright roman cmr 10) . "cmr10")
60 ((-1 medium upright roman cmr 8) . "cmr8" )
61 ((-2 medium upright roman cmr 7) . "cmr7" )
62 ((-3 medium upright roman cmr 6) . "cmr6" )
63 ((-4 medium upright roman cmr 5) . "cmr5" )
64 ((-5 medium upright roman cmr 5) . "cmr5" )
66 ((3 medium italic roman cmti 12) . "cmti12")
67 ((2 medium italic roman cmti 12) . "cmti12")
68 ((1 medium italic roman cmti 12) . "cmti12")
69 ((0 medium italic roman cmti 10) . "cmti10")
70 ((-1 medium italic roman cmti 8) . "cmti8")
71 ((-2 medium italic roman cmti 7) . "cmti7")
72 ((-3 medium italic roman cmti 7) . "cmti7")
74 ((2 bold upright roman cmbx 12) . "cmbx12")
75 ((1 bold upright roman cmbx 12) . "cmbx12")
76 ((0 bold upright roman cmbx 10) . "cmbx10")
77 ((-1 bold upright roman cmbx 8) . "cmbx8")
78 ((-2 bold upright roman cmbx 7) . "cmbx7")
80 ((2 bold italic roman cmbxti 12) . "cmbxti12")
81 ((1 bold italic roman cmbxti 12) . "cmbxti12")
82 ((0 bold italic roman cmbxti 10) . "cmbxti10")
83 ((-1 bold italic roman cmbxti 8) . "cmbxti8")
84 ((-2 bold italic roman cmbxti 7) . "cmbxti7")
86 ((4 medium upright typewriter cmtt 17) . "cmtt17")
87 ((3 medium upright typewriter cmtt 17) . "cmtt17")
88 ((2 medium upright typewriter cmtt 12) . "cmtt12")
89 ((1 medium upright typewriter cmtt 12) . "cmtt12")
90 ((0 medium upright typewriter cmtt 10) . "cmtt10")
91 ((-1 medium upright typewriter cmtt 8) . "cmtt8" )
92 ((-2 medium upright typewriter cmtt 7) . "cmtt7" )
93 ((-3 medium upright typewriter cmtt 6) . "cmtt6" )
94 ((-4 medium upright typewriter cmtt 5) . "cmtt5" )
95 ((-5 medium upright typewriter cmtt 5) . "cmtt5" )
97 ((3 medium caps roman cmcsc 12) . "cmcsc12")
98 ((2 medium caps roman cmcsc 12) . "cmcsc12")
99 ((1 medium caps roman cmcsc 12) . "cmcsc12")
100 ((0 medium caps roman cmcsc 10) . "cmcsc10")
101 ((-1 medium caps roman cmcsc 8) . "cmcsc8")
102 ((-2 medium caps roman cmcsc 7) . "cmcsc7")
103 ((-3 medium caps roman cmcsc 7) . "cmcsc7")
106 ;; should use the same brace font every where and fix C++ code.
107 ((2 * * braces feta-braces 26) . "feta-braces26")
108 ((1 * * braces feta-braces 23) . "feta-braces23")
109 ((0 * * braces feta-braces 20) . "feta-braces20")
110 ((-1 * * braces feta-braces 16) . "feta-braces16")
111 ((-2 * * braces feta-braces 13) . "feta-braces13")
112 ((-3 * * braces feta-braces 11) . "feta-braces11")
114 ((3 * * dynamic feta-din 19) . "feta-din19")
115 ((2 * * dynamic feta-din 19) . "feta-din19")
116 ((1 * * dynamic feta-din 17) . "feta-din17")
117 ((0 * * dynamic feta-din 14) . "feta-din14")
118 ((-1 * * dynamic feta-din 12) . "feta-din12")
119 ((-2 * * dynamic feta-din 9) . "feta-din9")
120 ((-3 * * dynamic feta-din 8) . "feta-din8")
121 ((-4 * * dynamic feta-din 7) . "feta-din7")
122 ((-5 * * dynamic feta-din 6) . "feta-din6")
124 ((2 * * music feta 26) . "feta26")
125 ((1 * * music feta 23) . "feta23")
126 ((0 * * music feta 20) . "feta20")
127 ((-0.5 * * music feta 20) . "feta19")
128 ((-1 * * music feta 16) . "feta16")
129 ((-2 * * music feta 13) . "feta13")
130 ((-3 * * music feta 11) . "feta11")
131 ((-4 * * music feta 11) . "feta11")
133 ((0 * * math msam 10) . "msam10")
134 ((-1 * * math msam 10) . "msam10")
135 ((-2 * * math msam 10) . "msam10")
136 ((-3 * * math msam 10) . "msam10")
140 (define (change-relative-size font-desc decrement)
141 "return a FONT-DESCR with relative size decremented by DECREMENT"
142 (cons (- (car font-desc) decrement) (cdr font-desc))
146 (define (map-alist-keys func list)
147 "map a function FUNC over the keys of an alist LIST, leaving the vals. "
150 (cons (cons (func (caar list)) (cdar list))
151 (map-alist-keys func (cdr list)))
155 (define (map-alist-vals func list)
156 "map a function FUNC over the vals of LIST, leaving the keys."
159 (cons (cons (caar list) (func (cdar list)))
160 (map-alist-vals func (cdr list)))
163 (define (change-style-sheet-relative-size sheet x)
164 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
167 ;; make style sheet for each paper version.
168 (define font-list-alist
169 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
170 paper20-style-sheet-alist x))
182 (define (make-style-sheet sym)
183 `((fonts . ,(cdr (assoc sym font-list-alist)))
185 . ((font-family . music)
186 (font-relative-size . 0)
187 (font-shape . upright)
188 (font-series . medium)
191 . ((finger . ((font-family . number) (font-relative-size . -3)))
192 (volta . ((font-family . number) (font-relative-size . -2)))
193 (tuplet . ((font-family . roman) (font-shape . italic) (font-relative-size . -1)))
195 (timesig . ((font-family . number) (font-relative-size . 0)))
196 (timesig-symbol . ((font-family . music) (font-relative-size . 0)))
198 (mmrest . ((font-family . number) (font-relative-size . 1)))
199 (mmrest-symbol . ((font-family . music) (font-relative-size . 0)))
201 (mark . ((font-family . number) (font-relative-size . 1)))
202 (script . ((font-family . roman) (font-relative-size . -1)))
203 (large . ((font-family . roman) (font-relative-size . 1)))
204 (Large . ((font-series . bold) (font-family . roman)
205 (font-relative-size . 2)))
206 (dynamic . ((font-family . dynamic) (font-relative-size . 0)))
208 (properties-to-font .
209 ,Font_interface::properties_to_font_name)
211 (markup-to-properties . ,markup-to-properties)
213 . ((columns . ((axis . 0)))
214 (lines . ((axis . 1)))
215 (roman . ((font-family . roman)))
216 (music . ((font-family . music) (lookup . name)))
217 (finger . ((font-style . finger)))
218 (bold . ((font-series . bold)))
219 (upright . ((font-shape . upright)))
220 (italic . ((font-shape . italic)))
221 (named . ((lookup . name)))
222 (overstrike . ((extent . (0 . 0))))
223 (super . ((raise . 1) (font-relative-size . -1) (extent . (0 . 0))))
224 (sub . ((raise . -1) (font-relative-size . -1) (extent . (0 . 0))))
225 (text . ((lookup . value)))
232 (define (qualifiers-to-fontnames qualifiers font-descr-alist)
233 " reduce the font list by successively applying a font-qualifier."
234 (if (null? qualifiers)
237 (qualifiers-to-fontnames
239 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
243 (define (wild-eq? x y)
248 (define (font-qualifies? qualifiers font-desc)
249 "does FONT-DESC satisfy QUALIFIERS?"
250 (if (null? qualifiers) #t
251 (if (wild-eq? (font-field (caar qualifiers) font-desc) (cdar qualifiers))
252 (font-qualifies? (cdr qualifiers) font-desc)
255 (define (find-first-font qualifiers fonts)
258 (if (font-qualifies? qualifiers (caar fonts))
260 (find-first-font qualifiers (cdr fonts))
265 (define (select-unique-font qualifiers fonts)
266 "return a single font from FONTS (or a default, if none found)
267 and warn if the selected font is not unique.
270 (err (current-error-port))
274 (if (not (= (length fonts) 1))
276 (display "\ncouldn't find unique font satisfying " err)
277 (write qualifiers err)
278 (display " found " err)
281 (write (map cdr fonts) err))
286 (cdar fonts)) ; return the topmost.
291 (define (chain-assoc x alist-list)
292 (if (null? alist-list)
294 (let* ((handle (assoc x (car alist-list))))
297 (chain-assoc x (cdr alist-list))))))
300 ;; the C++ version in font-interface.cc is usually used.
302 ;; FIXME: this has silently been broken by the introduction
303 ;; of wildcards in the font list.
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
308 font-design-size font-relative-size))
309 (rawqualifiers (map (lambda (x)
310 (chain-assoc x properties-alist-list))
312 (qualifiers (filter-list pair? rawqualifiers))
313 (selected (find-first-font qualifiers fonts))
314 (err (current-error-port)))
316 (if (equal? selected "")
318 (display "\ncouldn't find any font satisfying " err)
319 (write qualifiers err)
322 selected) ; return the topmost.
325 (define (markup-to-properties sheet markup)
326 ;; (display "markup: `")
331 ;; This is hairy. We want to allow:
332 ;; ((foo bar) "text")
333 ;; ((foo (bar . 1)) "text")
336 (if (and (symbol? (car markup))
337 (or (not (pair? (cdr markup)))
338 (number? (cadr markup))))
339 (if (equal? '() (cdr markup))
340 (markup-to-properties sheet (car markup))
343 (if (equal? '() (cdr markup))
344 (markup-to-properties sheet (car markup))
345 (append (markup-to-properties sheet (car markup))
346 (markup-to-properties sheet (cdr markup)))))
348 ;; markup is single abbreviation
349 (let ((entry (assoc markup
351 (append (cdr (assoc 'abbreviation-alist sheet))
352 (cdr (assoc 'style-alist sheet))))))
355 (list (cons markup #t))))))
358 ; fixme, how's this supposed to work?
359 ; and why don't we import font-setting from elt?
360 (define (style-to-font-name sheet style)
361 (let* ((entry (assoc style style-to-font-alist))
362 (qualifiers (if entry (cdr entry) '()))
363 (font (find-first-font qualifiers sheet))
364 (err (current-error-port))
369 (display "\ncouldn't find any font satisfying " err)
370 (write qualifiers err)
373 font) ; return the topmost.
377 (define (test-module)
378 (display (filter-list pair? '(1 2 (1 2) (1 .2)))
379 (display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
381 (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
382 (display (style-to-font-name 'paper20 'large))