1 ;;;; font.scm -- construct font trees
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 ;; lookup-font should be written in C.
12 (define-class <Font-tree-element>
15 (define-class <Font-tree-leaf> (<Font-tree-element>)
16 (default-size #:init-keyword #:default-size)
17 (size-vector #:init-keyword #:size-vector))
19 (define-class <Font-tree-node> (<Font-tree-element>)
20 (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
21 (default #:init-keyword #:default #:accessor font-default)
22 (children #:init-keyword #:children #:accessor font-children))
24 (define (make-font-tree-leaf size size-font-vector)
25 (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
27 (define (make-font-tree-node
29 (make <Font-tree-node>
32 #:children (make-hash-table 11)))
34 (define-method (display (leaf <Font-tree-leaf>) port)
35 (map (lambda (x) (display x port))
37 "#<Font-size-family:\n"
38 (slot-ref leaf 'default-size)
39 (slot-ref leaf 'size-vector)
43 (define-method (display (node <Font-tree-node>) port)
58 (display (car x) port)
60 (display (cdr x) port))
61 (hash-table->alist (font-children node)))
65 (define default-qualifier-order
66 '(font-encoding font-family font-shape font-series))
68 (define-method (add-font (node <Font-tree-node>) fprops size-family)
69 (define (assoc-delete key alist)
70 (assoc-remove! (list-copy alist) key))
72 (define (make-node fprops size-family)
74 (make-font-tree-leaf (car size-family) (cdr size-family))
75 (let* ((qual (next-qualifier default-qualifier-order fprops)))
76 (make-font-tree-node qual
77 (assoc-get qual fprops)))))
79 (define (next-qualifier order props)
81 ((and (null? props) (null? order))
83 ((null? props) (car order))
84 ((null? order) (caar props))
86 (if (assoc-get (car order) props)
88 (next-qualifier (cdr order) props)))))
90 (let* ((q (font-qualifier node))
91 (d (font-default node))
92 (v (assoc-get q fprops d))
93 (new-fprops (assoc-delete q fprops))
94 (child (hashq-ref (slot-ref node 'children)
100 (set! child (make-node new-fprops size-family))
101 (hashq-set! (slot-ref node 'children) v child)))
102 (if (pair? new-fprops)
103 (add-font child new-fprops size-family))))
106 (define-method (add-font (node <Font-tree-leaf>) fprops size-family)
107 (throw "must add to node, not leaf"))
110 (define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
111 (let* ((qual (font-qualifier node))
112 (def (font-default node))
113 (val (chain-assoc-get qual alist-chain def))
114 (desired-child (hashq-ref (font-children node) val)))
117 (g-lookup-font desired-child alist-chain)
118 (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
121 (define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
124 ;; two step call is handy for debugging.
125 (define (lookup-font node alist-chain)
126 (g-lookup-font node alist-chain))
128 ;; Each size family is a vector of fonts, loaded with a delay. The
129 ;; vector should be sorted according to ascending design size.
130 (define feta-alphabet-size-vector
131 (if (defined? 'ly:kpathsea-find-file)
132 `#(,(delay (ly:font-load "feta-alphabet11"))
133 ,(delay (ly:font-load "feta-alphabet13"))
134 ,(delay (ly:font-load "feta-alphabet14"))
135 ,(delay (ly:font-load "feta-alphabet16"))
136 ,(delay (ly:font-load "feta-alphabet18"))
137 ,(delay (ly:font-load "feta-alphabet20"))
138 ,(delay (ly:font-load "feta-alphabet23"))
139 ,(delay (ly:font-load "feta-alphabet26")))
142 (cons (ly:pt (cdr tup))
143 (format "feta-alphabet~a ~a"
155 (define-public (add-music-fonts node factor)
159 (list (cons 'font-encoding (car x)))
160 (cons (* factor (cadr x))
162 `((fetaDynamic ,(ly:pt 20.0) ,feta-alphabet-size-vector)
163 (fetaNumber ,(ly:pt 20.0) ,feta-alphabet-size-vector)
164 (fetaMusic ,(ly:pt 20.0)
165 #(,(delay (ly:font-load "emmentaler-11"))
166 ,(delay (ly:font-load "emmentaler-13"))
167 ,(delay (ly:font-load "emmentaler-14"))
168 ,(delay (ly:font-load "emmentaler-16"))
169 ,(delay (ly:font-load "emmentaler-18"))
170 ,(delay (ly:font-load "emmentaler-20"))
171 ,(delay (ly:font-load "emmentaler-23"))
172 ,(delay (ly:font-load "emmentaler-26"))))
174 (fetaBraces ,(ly:pt 20.0) #(,(delay
175 (ly:font-load "aybabtu")))))))
177 (define-public (add-cmr-fonts node factor)
178 (add-font node '((font-encoding . TeX-math))
179 `(,(* factor 10) . #(,(delay (ly:font-load "msam10")))))
182 (add-font node `((font-encoding . TeX-text)
183 (font-series . ,(vector-ref (car x) 2))
184 (font-shape . ,(vector-ref (car x) 1))
185 (font-family . ,(vector-ref (car x) 0)))
186 (cons (* factor (cadr x))
188 `((#(roman upright medium)
189 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmr6"))
190 ,(delay (ly:font-load "cmr8"))
191 ,(delay (ly:font-load "cmr10"))
192 ,(delay (ly:font-load "cmr17")))))
193 (#(roman upright bold)
194 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmbx6"))
195 ,(delay (ly:font-load "cmbx8"))
196 ,(delay (ly:font-load "cmbx10"))
197 ,(delay (ly:font-load "cmbx12")))))
198 (#(roman italic medium)
199 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmti7"))
200 ,(delay (ly:font-load "cmti10"))
201 ,(delay (ly:font-load "cmti12")))))
202 (#(roman italic bold)
203 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmbxti8"))
204 ,(delay (ly:font-load "cmbxti10"))
205 ,(delay (ly:font-load "cmbxti14")))))
206 (#(roman caps medium)
207 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmcsc10")))))
208 (#(roman upright bold-narrow )
209 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmb10")))))
210 (#(sans upright medium)
211 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmss8"))
212 ,(delay (ly:font-load "cmss10"))
213 ,(delay (ly:font-load "cmss12"))
214 ,(delay (ly:font-load "cmss17")))))
215 (#(typewriter upright medium)
216 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "cmtt8"))
217 ,(delay (ly:font-load "cmtt10"))
218 ,(delay (ly:font-load "cmtt12"))))))))
220 ;; Debian lmodern font support.
221 (define-public (add-cork-lm-fonts node factor)
224 (add-font node `((font-encoding . cork-lm)
225 (font-series . ,(vector-ref (car x) 2))
226 (font-shape . ,(vector-ref (car x) 1))
227 (font-family . ,(vector-ref (car x) 0)))
228 (cons (* factor (cadr x)) (cddr x))))
229 `((#(roman upright medium)
230 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmr6"))
231 ,(delay (ly:font-load "lmr8"))
232 ,(delay (ly:font-load "lmr10"))
233 ,(delay (ly:font-load "lmr17")))))
234 (#(roman upright bold)
235 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmbx6"))
236 ,(delay (ly:font-load "lmbx8"))
237 ,(delay (ly:font-load "lmbx10"))
238 ,(delay (ly:font-load "lmbx12")))))
239 (#(roman italic medium)
240 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmri7"))
241 ,(delay (ly:font-load "lmri10"))
242 ,(delay (ly:font-load "lmri12")))))
243 (#(roman italic bold)
244 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmbxi10")))))
245 (#(roman caps medium)
246 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmcsc10")))))
247 (#(roman upright bold-narrow )
248 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmb10")))))
249 (#(sans upright medium)
250 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmss8"))
251 ,(delay (ly:font-load "lmss10"))
252 ,(delay (ly:font-load "lmss12"))
253 ,(delay (ly:font-load "lmss17")))))
254 (#(sans upright bold)
255 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmssbx10")))))
257 (#(typewriter upright medium)
258 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "lmtt8"))
259 ,(delay (ly:font-load "lmtt10"))
260 ,(delay (ly:font-load "lmtt12"))))))))
262 ;; ec-fonts-mftraced font support.
263 (define-public (add-ec-fonts node factor)
265 (lambda (x) (add-font node
266 `((font-encoding . Extended-TeX-Font-Encoding---Latin)
267 (font-series . ,(vector-ref (car x) 2))
268 (font-shape . ,(vector-ref (car x) 1))
269 (font-family . ,(vector-ref (car x) 0)))
270 (cons (* factor (cadr x)) (cddr x))))
272 `((#(roman upright medium)
273 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecrm6"))
274 ,(delay (ly:font-load "ecrm8"))
275 ,(delay (ly:font-load "ecrm10"))
276 ,(delay (ly:font-load "ecrm17")))))
277 (#(roman upright bold)
278 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecbx6"))
279 ,(delay (ly:font-load "ecbx8"))
280 ,(delay (ly:font-load "ecbx10"))
281 ,(delay (ly:font-load "ecbx12")))))
282 (#(roman italic medium)
283 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecti7"))
284 ,(delay (ly:font-load "ecti10"))
285 ,(delay (ly:font-load "ecti12")))))
286 (#(roman italic bold)
287 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecbi8"))
288 ,(delay (ly:font-load "ecbi10"))
289 ,(delay (ly:font-load "ecbi14")))))
290 (#(roman caps medium)
291 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "eccc10")))))
292 (#(roman slanted-caps medium)
293 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecsc10")))))
294 (#(roman upright bold-narrow )
295 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecrb10")))))
296 (#(sans upright medium)
297 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ecss8"))
298 ,(delay (ly:font-load "ecss10"))
299 ,(delay (ly:font-load "ecss12"))
300 ,(delay (ly:font-load "ecss17")))))
301 (#(typewriter upright medium)
302 . (,(ly:pt 10.0) . #(,(delay (ly:font-load "ectt8"))
303 ,(delay (ly:font-load "ectt10"))
304 ,(delay (ly:font-load "ectt12"))))))))
306 (define-public (add-pango-fonts node lily-family family factor)
307 (define (add-node shape series)
309 `((font-family . ,lily-family)
310 (font-shape . ,shape)
311 (font-series . ,series)
312 (font-encoding . latin1) ;; ugh.
315 `(,(ly:pt (* factor 11.0))
318 (ly:make-pango-description-string
319 `(((font-family . ,family)
320 (font-series . ,series)
321 (font-shape . ,shape)))
324 (add-node 'upright 'normal)
325 (add-node 'caps 'normal)
326 (add-node 'upright 'bold)
327 (add-node 'italic 'normal)
328 (add-node 'italic 'bold))
330 (define-public (make-cmr-tree factor)
332 ((n (make-font-tree-node 'font-encoding 'fetaMusic))
333 (module (resolve-module '(scm kpathsea)))
334 (find (eval 'ly:kpathsea-find-file module))
336 (add-music-fonts n factor)
337 (add-cmr-fonts n factor)
339 (if (find "lmr10.pfb")
340 (add-cork-lm-fonts n factor))
341 (if (find "ecrm10.pfa")
342 (add-ec-fonts n factor))
348 (define-public (make-pango-font-tree roman-str sans-str typewrite-str factor)
349 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
350 (add-music-fonts n factor)
351 (add-pango-fonts n 'roman roman-str factor)
352 (add-pango-fonts n 'sans sans-str factor)
353 (add-pango-fonts n 'typewriter typewrite-str factor)
357 (define-public (make-century-schoolbook-tree factor)
358 (make-pango-font-tree
359 "Century Schoolbook L"
360 "Sans" "Mono" factor))
362 (define-public (magstep s)
363 (exp (* (/ s 6) (log 2))))
365 (define-public (magnification->font-size m)
366 (* 6 (/ (log m) (log 2))))