2 ;;; font.scm -- implement Font stuff
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
12 (define style-to-font-alist
14 (finger . ((font-family . number) (font-relative-size . -3)))
15 (volta . ((font-family . number) (font-relative-size . -2)))
16 (timesig . ((font-family . number) (font-relative-size . 0)))
17 (mmrest . ((font-family . number) (font-relative-size . -1)))
18 (mark . ((font-family . number) (font-relative-size . 1)))
19 (script . ((font-family . roman) (font-relative-size . -1)))
20 (large . ((font-family . roman) (font-relative-size . 1)))
21 (Large . ((font-series . bold) (font-family . roman) (font-relative-size . 2)))
22 (dynamic . ((font-series . bold) (font-family . dynamic) (font-relative-size . 0)))
26 (define (font-field name font-descr)
30 ((eq? name 'font-relative-size) 0)
31 ((eq? name 'font-series) 1)
32 ((eq? name 'font-shape) 2)
33 ((eq? name 'font-family) 3)
34 ((eq? name 'font-name) 4)
35 ((eq? name 'font-point-size-size) 5)
40 ;; return that part of LIST for which PRED is true.
41 (define (filter-list pred? list)
44 (rest (filter-list pred? (cdr list)))
46 (if (pred? (car list))
47 (cons (car list) rest)
54 ;; return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE
56 ;;;;;;;;; TODO TODO . (should not use filtering?)
57 ;; this is bad, since we generate garbage every font-lookup.
58 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
62 ;;; kut kut, het lukt gewoon niet, vandaag:
64 ;;;couldn't find font satisfying ((font-family . roman) (font-shape . upright) (font-relative-size . -3))
67 (define (filter-field field-name value font-descr-alist)
69 (let ((err (current-error-port)))
70 (display "\nignoring string qualifier: " err)
75 (lambda (x) (eq? value (font-field field-name (car x))))
79 (define paper20-style-sheet-alist
81 ((0 medium upright music feta 20) . "feta20")
82 ((-1 medium upright music feta 16) . "feta16")
83 ((-2 medium upright music feta 13) . "feta13")
84 ((-3 medium upright music feta 13) . "feta11")
85 ((-4 medium upright music feta 13) . "feta11")
86 ((1 medium upright music feta 23) . "feta23")
87 ((2 medium upright music feta 26) . "feta26")
88 ((0 medium upright braces feta-braces 20) . "feta-braces20")
89 ((0 medium italic roman cmti 10) . "cmti10")
90 ((1 medium italic roman cmti 12) . "cmti12")
91 ((3 bold italic dynamic feta 10) . "feta-din13")
92 ((2 bold italic dynamic feta 10) . "feta-din13")
93 ((1 bold italic dynamic feta 10) . "feta-din12")
94 ((0 bold italic dynamic feta 10) . "feta-din10")
95 ((-1 bold italic dynamic feta 10) . "feta-din8")
96 ((-2 bold italic dynamic feta 10) . "feta-din7")
97 ((-3 bold italic dynamic feta 10) . "feta-din6")
98 ((-4 bold italic dynamic feta 10) . "feta-din5")
99 ((-5 bold italic dynamic feta 10) . "feta-din4")
100 ((3 medium upright number feta-nummer 13) . "feta-nummer13")
101 ((2 medium upright number feta-nummer 13) . "feta-nummer13")
102 ((1 medium upright number feta-nummer 12) . "feta-nummer12")
103 ((0 medium upright number feta-nummer 10) . "feta-nummer10")
104 ((-1 medium upright number feta-nummer 8) . "feta-nummer8")
105 ((-2 medium upright number feta-nummer 6) . "feta-nummer6")
106 ((-3 medium upright number feta-nummer 5) . "feta-nummer5")
107 ((-4 medium upright number feta-nummer 4) . "feta-nummer4")
108 ((0 medium upright roman cmr 10) . "cmr10")
109 ((1 medium upright roman cmr 12) . "cmr12")
110 ((-1 medium upright roman cmr 8) . "cmr8" )
111 ((-2 medium upright roman cmr 7) . "cmr7" )
112 ((-3 medium upright roman cmr 6) . "cmr6" )
113 ((-4 medium upright roman cmr 5) . "cmr5" )
114 ((-5 medium upright roman cmr 4) . "cmr4" )
115 ((2 bold upright roman cmbx 10) . "cmbx10")
116 ((1 bold upright roman cmbx 12) . "cmbx12")
117 ((-3 medium upright math msam 10) . "msam10")
118 ((-2 medium upright math msam 10) . "msam10")
119 ((-1 medium upright math msam 10) . "msam10")
120 ((0 medium upright math msam 10) . "msam10")
124 ;; return a FONT-DESCR with relative size incremented by INCREMENT
125 (define (change-relative-size font-desc increment)
126 (cons (+ increment (car font-desc)) (cdr font-desc))
129 ;; map a function FUNC over the keys of an alist LIST, leaving the vals.
130 (define (map-alist-keys func list)
133 (cons (cons (func (caar list)) (cdar list))
134 (map-alist-keys func (cdr list)))
137 ;; map a function FUNC over the vals of LIST, leaving the keys.
138 (define (map-alist-vals func list)
141 (cons (cons (caar list) (func (cdar list)))
142 (map-alist-vals func (cdr list)))
145 (define (change-style-sheet-relative-size sheet x)
146 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
149 ;; make style sheet for each paper version.
150 (define style-sheet-alist
151 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
152 paper20-style-sheet-alist x))
163 (define (font-regexp-to-font-name paper regexp)
164 (let ((style-sheet (cdr (assoc paper style-sheet-alist))))
165 (let loop ((fonts style-sheet))
166 (if (string-match regexp (caar fonts))
168 (if (pair? (cdr fonts))
172 ;; reduce the font list by successively applying a font-qualifier.
173 (define (qualifiers-to-fontname qualifiers font-descr-alist)
174 (if (null? qualifiers)
175 (if (null? font-descr-alist)
177 (cdar font-descr-alist)) ; return the topmost.
179 (qualifiers-to-fontname
181 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
185 (define (properties-to-font-name paper properties-alist)
187 (fonts (cdr (assoc paper style-sheet-alist)))
189 ;; change order to change priorities of qualifiers.
190 (q-order '(font-name font-family font-series font-shape font-point-size font-relative-size))
191 (rawqualifiers (map (lambda (x) (assoc x properties-alist))
194 (qualifiers (filter-list pair? rawqualifiers))
195 (fontnm (qualifiers-to-fontname qualifiers fonts))
196 (err (current-error-port))
201 (display "\ncouldn't find font satisfying " err)
202 (display qualifiers err)
212 (define markup-abbrev-to-properties-alist
215 (rows . ((align . 0)))
216 (lines . ((align . 1)))
217 (roman . ((font-family . roman)))
218 (music . ((font-family . music)))
219 (finger . ((font-style . finger)))
220 (bold . ((font-series . bold)))
221 (italic . ((font-shape . italic)))
222 (named . ((lookup . name)))
223 (super . ((raise . 1) (font-relative-size . -1)))
224 (sub . ((raise . -1) (font-relative-size . -1)))
225 (text . ((lookup . value)))
227 (map (lambda (x) (cons (car x) (cons 'font-style (car x))))
228 style-to-font-alist)))
230 (define (markup-to-properties markup)
231 ;;(display "markup: `")
236 (let ((entry (assoc markup markup-abbrev-to-properties-alist)))
237 (if entry (cdr entry)
238 (list (cons markup #t))))))
240 ; fixme, how's this supposed to work?
241 ; and why don't we import font-setting from elt?
242 (define (style-to-font-name paper style)
243 (let* ((entry (assoc style style-to-font-alist))
244 (qs (if entry (cdr entry) '()))
245 (sheet (cdr (assoc paper style-sheet-alist)))
246 (fontnm (qualifiers-to-fontname qs sheet))
247 (err (current-error-port)))
250 (display "\ncouldn't find font satisfying " err)
259 ; (define (test-module)
260 ; (display (filter-list pair? '(1 2 (1 2) (1 .2)))
261 ;(display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
263 ; (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
264 ; (display (style-to-font-name 'paper20 'large))