2 ;;; font.scm -- implement Font stuff
4 ;;; source file of the GNU LilyPond music typesetter
6 ;;; (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
9 (define style-to-font-alist
11 (finger . ((font-family . number) (font-relative-size . -3)))
12 (volta . ((font-family . number) (font-relative-size . -2)))
13 (timesig . ((font-family . number) (font-relative-size . 0)))
14 (mmrest . ((font-family . number) (font-relative-size . -1)))
15 (mark . ((font-family . number) (font-relative-size . 1)))
16 (script . ((font-family . roman) (font-relative-size . -1)))
17 (large . ((font-family . roman) (font-relative-size . 1)))
18 (Large . ((font-series . bold) (font-family . roman) (font-relative-size . 2)))
19 (dynamic . ((font-series . bold) (font-family . dynamic) (font-relative-size . 0)))
22 (define (font-field name font-descr)
26 ((eq? name 'font-relative-size) 0)
27 ((eq? name 'font-series) 1)
28 ((eq? name 'font-shape) 2)
29 ((eq? name 'font-family) 3)
30 ((eq? name 'font-name) 4)
31 ((eq? name 'font-point-size-size) 5)
35 ;; return that part of LIST for which PRED is true.
36 (define (filter-list pred? list)
39 (rest (filter-list pred? (cdr list)))
41 (if (pred? (car list))
42 (cons (car list) rest)
49 ;;;;;;;;; TODO TODO . (should not use filtering?)
50 ;; this is bad, since we generate garbage every font-lookup.
51 ;; otoh, if the qualifiers is narrow enough , we don't generate much garbage.
54 ;; return those descriptions from FONT-DESCR-LIST whose FIELD-NAME matches VALUE
55 (define (filter-field field-name value font-descr-alist)
57 (lambda (x) (eq? value (font-field field-name (car x))))
61 (define paper20-style-sheet-alist
63 ((0 medium upright music feta 20) . "feta20")
64 ((-1 medium upright music feta 16) . "feta16")
65 ((-2 medium upright music feta 13) . "feta13")
66 ((-3 medium upright music feta 13) . "feta11")
67 ((-4 medium upright music feta 13) . "feta11")
68 ((1 medium upright music feta 23) . "feta23")
69 ((2 medium upright music feta 26) . "feta26")
70 ((0 medium upright braces feta-braces 20) . "feta-braces20")
71 ((0 medium italic roman cmti 10) . "cmti10")
72 ((1 medium italic roman cmti 12) . "cmti12")
73 ((3 bold italic dynamic feta 10) . "feta-din13")
74 ((2 bold italic dynamic feta 10) . "feta-din13")
75 ((1 bold italic dynamic feta 10) . "feta-din12")
76 ((0 bold italic dynamic feta 10) . "feta-din10")
77 ((-1 bold italic dynamic feta 10) . "feta-din8")
78 ((-2 bold italic dynamic feta 10) . "feta-din7")
79 ((-3 bold italic dynamic feta 10) . "feta-din6")
80 ((-4 bold italic dynamic feta 10) . "feta-din5")
81 ((-5 bold italic dynamic feta 10) . "feta-din4")
82 ((3 medium upright number feta-nummer 13) . "feta-nummer13")
83 ((2 medium upright number feta-nummer 13) . "feta-nummer13")
84 ((1 medium upright number feta-nummer 12) . "feta-nummer12")
85 ((0 medium upright number feta-nummer 10) . "feta-nummer10")
86 ((-1 medium upright number feta-nummer 8) . "feta-nummer8")
87 ((-2 medium upright number feta-nummer 6) . "feta-nummer6")
88 ((-3 medium upright number feta-nummer 5) . "feta-nummer5")
89 ((-4 medium upright number feta-nummer 4) . "feta-nummer4")
90 ((0 medium upright roman cmr 10) . "cmr10")
91 ((1 medium upright roman cmr 12) . "cmr12")
92 ((-1 medium upright roman cmr 8) . "cmr8" )
93 ((-2 medium upright roman cmr 7) . "cmr7" )
94 ((-3 medium upright roman cmr 6) . "cmr6" )
95 ((-4 medium upright roman cmr 5) . "cmr5" )
96 ((-5 medium upright roman cmr 4) . "cmr4" )
97 ((2 bold upright roman cmbx 10) . "cmbx10")
98 ((1 bold upright roman cmbx 12) . "cmbx12")
99 ((-3 medium upright math msam 10) . "msam10")
100 ((-2 medium upright math msam 10) . "msam10")
101 ((-1 medium upright math msam 10) . "msam10")
102 ((0 medium upright math msam 10) . "msam10")
106 ;; return a FONT-DESCR with relative size incremented by INCREMENT
107 (define (change-relative-size font-desc increment)
108 (cons (+ increment (car font-desc)) (cdr font-desc))
111 ;; map a function FUNC over the keys of an alist LIST, leaving the vals.
112 (define (map-alist-keys func list)
115 (cons (cons (func (caar list)) (cdar list))
116 (map-alist-keys func (cdr list)))
119 ;; map a function FUNC over the vals of LIST, leaving the keys.
120 (define (map-alist-vals func list)
123 (cons (cons (caar list) (func (cdar list)))
124 (map-alist-vals func (cdr list)))
127 (define (change-style-sheet-relative-size sheet x)
128 (map-alist-keys (lambda (descr) (change-relative-size descr x)) sheet))
131 ;; make style sheet for each paper version.
132 (define style-sheet-alist
133 (map-alist-vals (lambda (x) (change-style-sheet-relative-size
134 paper20-style-sheet-alist x))
145 (define (font-regexp-to-font-name paper regexp)
146 (let ((style-sheet (cdr (assoc paper style-sheet-alist))))
147 (let loop ((fonts style-sheet))
148 (if (string-match regexp (caar fonts))
150 (if (pair? (cdr fonts))
154 ;; reduce the font list by successively applying a font-qualifier.
155 (define (qualifiers-to-fontname qualifiers font-descr-alist)
156 (if (null? qualifiers)
157 (if (null? font-descr-alist)
159 (cdar font-descr-alist)) ; return the topmost.
161 (qualifiers-to-fontname
163 (filter-field (caar qualifiers) (cdar qualifiers) font-descr-alist)
167 (define (properties-to-font-name paper properties-alist)
169 (fonts (cdr (assoc paper style-sheet-alist)))
171 ;; change order to change priorities of qualifiers.
172 (q-order '(font-name font-family font-series font-shape font-point-size font-relative-size))
173 (rawqualifiers (map (lambda (x) (assoc x properties-alist))
176 (qualifiers (filter-list pair? rawqualifiers))
177 (fontnm (qualifiers-to-fontname qualifiers fonts))
178 (err (current-error-port))
183 (display "\ncouldn't find font satisfying " err)
184 (write qualifiers err)
194 (define markup-abbrev-to-properties-alist
197 (rows . ((align . 0)))
198 (lines . ((align . 1)))
199 (roman . ((font-family . roman)))
200 (music . ((font-family . music)))
201 (finger . ((font-style . finger)))
202 (bold . ((font-series . bold)))
203 (italic . ((font-shape . italic)))
204 (named . ((lookup . name)))
205 (super . ((raise . 1) (font-relative-size . -1)))
206 (sub . ((raise . -1) (font-relative-size . -1)))
207 (text . ((lookup . value)))
209 (map (lambda (x) (cons (car x) (cons 'font-style (car x))))
210 style-to-font-alist)))
212 (define (markup-to-properties markup)
213 ;;(display "markup: `")
218 (let ((entry (assoc markup markup-abbrev-to-properties-alist)))
219 (if entry (cdr entry)
220 (list (cons markup #t))))))
222 ; fixme, how's this supposed to work?
223 ; and why don't we import font-setting from elt?
224 (define (style-to-font-name paper style)
225 (let* ((entry (assoc style style-to-font-alist))
226 (qs (if entry (cdr entry) '()))
227 (sheet (cdr (assoc paper style-sheet-alist)))
228 (fontnm (qualifiers-to-fontname qs sheet))
229 (err (current-error-port)))
232 (display "\ncouldn't find font satisfying " err)
241 ; (define (test-module)
242 ; (display (filter-list pair? '(1 2 (1 2) (1 .2)))
243 ;(display (filter-field 'font-name 'cmbx paper20-style-sheet-alist))
245 ; (display (qualifiers-to-fontname '((font-name . cmbx)) paper20-style-sheet-alist))
246 ; (display (style-to-font-name 'paper20 'large))