1 ;;;; font.scm -- construct font trees
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 ;; As an excercise, do it with records.
8 ;; Should use GOOPS, really.
12 ;; lookup-font should be written in C.
14 ;; should dump tree to .texi as internal documentation
16 ;; * should extract design sizes from fonts: fonts should
17 ;; be read off the disk, on demand, something like:
19 ;; cmr -> ((font-load "cmr6") (font-load "cmr8") .. )
22 (define-class <Font-tree-element>
26 (define-class <Font-tree-leaf> (<Font-tree-element>)
27 (default-size #:init-keyword #:default-size)
28 (size-vector #:init-keyword #:size-vector))
30 (define-class <Font-tree-node> (<Font-tree-element>)
31 (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
32 (default #:init-keyword #:default #:accessor font-default)
33 (children #:init-keyword #:children #:accessor font-children))
35 (define (make-font-tree-leaf size size-font-vector)
36 (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
38 (define (make-font-tree-node
40 (make <Font-tree-node>
43 #:children (make-hash-table 11)))
45 (define-method (display (leaf <Font-tree-leaf>) port)
46 (map (lambda (x) (display x port))
48 "Font-size-family: \n"
49 (slot-ref leaf 'default-size)
50 (slot-ref leaf 'size-vector) )))
52 (define-method (display (node <Font-tree-node>) port)
59 "Font_node { \nqual: "
67 (display (car x) port)
69 (display (cdr x) port))
70 (hash-table->alist (font-children node)))
74 (define default-qualifier-order
75 '(font-encoding font-family font-shape font-series))
77 (define-method (add-font (node <Font-tree-node>) fprops size-family)
78 (define (assoc-delete key alist)
79 (assoc-remove! (list-copy alist) key))
80 (define (make-node fprops size-family)
82 (make-font-tree-leaf (car size-family) (cdr size-family))
84 ((qual (next-qualifier default-qualifier-order fprops)))
85 (make-font-tree-node qual
86 (assoc-get qual fprops)))))
88 (define (next-qualifier order props)
90 ((and (null? props) (null? order))
92 ((null? props) (car order))
93 ((null? order) (caar props))
95 (if (assoc-get (car order) props)
97 (next-qualifier (cdr order) props)))))
101 ((q (font-qualifier node))
102 (d (font-default node))
103 (v (assoc-get q fprops d))
104 (new-fprops (assoc-delete q fprops))
105 (child (hashq-ref (slot-ref node 'children)
111 (set! child (make-node new-fprops size-family))
112 (hashq-set! (slot-ref node 'children) v child)))
113 (if (pair? new-fprops)
114 (add-font child new-fprops size-family))))
117 (define-method (add-font (node <Font-tree-leaf>) fprops size-family)
118 (throw "must add to node, not leaf"))
121 (define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
123 ((qual (font-qualifier node))
124 (def (font-default node))
125 (val (chain-assoc-get qual alist-chain def))
126 (desired-child (hashq-ref (font-children node) val)))
129 (g-lookup-font desired-child alist-chain)
130 (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
133 (define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
136 ;; two step call is handy for debugging.
137 (define (lookup-font node alist-chain)
138 (g-lookup-font node alist-chain))
141 ; Each size family is a vector of fonts, loaded with a delay.
142 ; The vector should be sorted according to ascending design size.
145 (define-public (add-music-fonts node factor)
149 (list (cons 'font-encoding (car x)))
150 (cons (* factor (cadr x))
155 ,(delay (ly:font-load "bigcheese11"))
156 ,(delay (ly:font-load "bigcheese13"))
157 ,(delay (ly:font-load "bigcheese14"))
158 ,(delay (ly:font-load "bigcheese16"))
159 ,(delay (ly:font-load "bigcheese18"))
160 ,(delay (ly:font-load "bigcheese20"))
161 ,(delay (ly:font-load "bigcheese23"))
162 ,(delay (ly:font-load "bigcheese26"))))
165 ,(delay (ly:font-load "bigcheese11"))
166 ,(delay (ly:font-load "bigcheese13"))
167 ,(delay (ly:font-load "bigcheese14"))
168 ,(delay (ly:font-load "bigcheese16"))
169 ,(delay (ly:font-load "bigcheese18"))
170 ,(delay (ly:font-load "bigcheese20"))
171 ,(delay (ly:font-load "bigcheese23"))
172 ,(delay (ly:font-load "bigcheese26"))))
176 ,(delay (ly:font-load "bigcheese11"))
177 ,(delay (ly:font-load "bigcheese13"))
178 ,(delay (ly:font-load "bigcheese14"))
179 ,(delay (ly:font-load "bigcheese16"))
180 ,(delay (ly:font-load "bigcheese18"))
181 ,(delay (ly:font-load "bigcheese20"))
182 ,(delay (ly:font-load "bigcheese23"))
183 ,(delay (ly:font-load "bigcheese26"))))
185 (fetaBraces 15 #(,(delay
186 (ly:make-virtual-font
187 (ly:font-load "feta-braces-a")
188 (ly:font-load "feta-braces-b")
189 (ly:font-load "feta-braces-c")
190 (ly:font-load "feta-braces-d")
191 (ly:font-load "feta-braces-e")
192 (ly:font-load "feta-braces-f")
193 (ly:font-load "feta-braces-g")
194 (ly:font-load "feta-braces-h")
195 (ly:font-load "feta-braces-i"))))))))
197 (define-public (add-cmr-fonts node factor)
198 (add-font node '((font-encoding . TeX-math))
199 `(,(* factor 10) . #(,(delay (ly:font-load "msam10")))))
202 (add-font node `((font-encoding . TeX-text)
203 (font-series . ,(vector-ref (car x) 2))
204 (font-shape . ,(vector-ref (car x) 1))
205 (font-family . ,(vector-ref (car x) 0)))
206 (cons (* factor (cadr x))
208 `((#(roman upright medium)
209 . (10.0 . #(,(delay (ly:font-load "cmr6"))
210 ,(delay (ly:font-load "cmr8"))
211 ,(delay (ly:font-load "cmr10"))
212 ,(delay (ly:font-load "cmr17")))))
213 (#(roman upright bold)
214 . (10.0 . #(,(delay (ly:font-load "cmbx6"))
215 ,(delay (ly:font-load "cmbx8"))
216 ,(delay (ly:font-load "cmbx10"))
217 ,(delay (ly:font-load "cmbx12")))))
218 (#(roman italic medium)
219 . (10.0 . #(,(delay (ly:font-load "cmti7"))
220 ,(delay (ly:font-load "cmti10"))
221 ,(delay (ly:font-load "cmti12")))))
222 (#(roman italic bold)
223 . (10.0 . #(,(delay (ly:font-load "cmbxti8"))
224 ,(delay (ly:font-load "cmbxti10"))
225 ,(delay (ly:font-load "cmbxti14")))))
226 (#(roman caps medium)
227 . (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
228 (#(roman upright bold-narrow )
229 . (10.0 . #(,(delay (ly:font-load "cmb10")))))
230 (#(sans upright medium)
231 . (10.0 . #(,(delay (ly:font-load "cmss8"))
232 ,(delay (ly:font-load "cmss10"))
233 ,(delay (ly:font-load "cmss12"))
234 ,(delay (ly:font-load "cmss17")))))
235 (#(typewriter upright medium)
236 . (10.0 . #(,(delay (ly:font-load "cmtt8"))
237 ,(delay (ly:font-load "cmtt10"))
238 ,(delay (ly:font-load "cmtt12"))))))))
240 ;; Debian lmodern font support.
241 (define-public (add-cork-lm-fonts node factor)
244 (add-font node `((font-encoding . cork-lm)
245 (font-series . ,(vector-ref (car x) 2))
246 (font-shape . ,(vector-ref (car x) 1))
247 (font-family . ,(vector-ref (car x) 0)))
248 (cons (* factor (cadr x)) (cddr x))))
249 `((#(roman upright medium)
250 . (10.0 . #(,(delay (ly:font-load "lmr6"))
251 ,(delay (ly:font-load "lmr8"))
252 ,(delay (ly:font-load "lmr10"))
253 ,(delay (ly:font-load "lmr17")))))
254 (#(roman upright bold)
255 . (10.0 . #(,(delay (ly:font-load "lmbx6"))
256 ,(delay (ly:font-load "lmbx8"))
257 ,(delay (ly:font-load "lmbx10"))
258 ,(delay (ly:font-load "lmbx12")))))
259 (#(roman italic medium)
260 . (10.0 . #(,(delay (ly:font-load "lmri7"))
261 ,(delay (ly:font-load "lmri10"))
262 ,(delay (ly:font-load "lmri12")))))
263 (#(roman italic bold)
264 . (10.0 . #(,(delay (ly:font-load "lmbxi10")))))
265 (#(roman caps medium)
266 . (10.0 . #(,(delay (ly:font-load "lmcsc10")))))
267 (#(roman upright bold-narrow )
268 . (10.0 . #(,(delay (ly:font-load "lmb10")))))
269 (#(sans upright medium)
270 . (10.0 . #(,(delay (ly:font-load "lmss8"))
271 ,(delay (ly:font-load "lmss10"))
272 ,(delay (ly:font-load "lmss12"))
273 ,(delay (ly:font-load "lmss17")))))
274 (#(sans upright bold)
275 . (10.0 . #(,(delay (ly:font-load "lmssbx10")))))
277 (#(typewriter upright medium)
278 . (10.0 . #(,(delay (ly:font-load "lmtt8"))
279 ,(delay (ly:font-load "lmtt10"))
280 ,(delay (ly:font-load "lmtt12"))))))))
282 ;; ec-fonts-mftraced font support.
283 (define-public (add-ec-fonts node factor)
285 (lambda (x) (add-font node
286 `((font-encoding . Extended-TeX-Font-Encoding---Latin)
287 (font-series . ,(vector-ref (car x) 2))
288 (font-shape . ,(vector-ref (car x) 1))
289 (font-family . ,(vector-ref (car x) 0)))
290 (cons (* factor (cadr x)) (cddr x))))
292 `((#(roman upright medium)
293 . (10.0 . #(,(delay (ly:font-load "ecrm6"))
294 ,(delay (ly:font-load "ecrm8"))
295 ,(delay (ly:font-load "ecrm10"))
296 ,(delay (ly:font-load "ecrm17")))))
297 (#(roman upright bold)
298 . (10.0 . #(,(delay (ly:font-load "ecbx6"))
299 ,(delay (ly:font-load "ecbx8"))
300 ,(delay (ly:font-load "ecbx10"))
301 ,(delay (ly:font-load "ecbx12")))))
302 (#(roman italic medium)
303 . (10.0 . #(,(delay (ly:font-load "ecti7"))
304 ,(delay (ly:font-load "ecti10"))
305 ,(delay (ly:font-load "ecti12")))))
306 (#(roman italic bold)
307 . (10.0 . #(,(delay (ly:font-load "ecbi8"))
308 ,(delay (ly:font-load "ecbi10"))
309 ,(delay (ly:font-load "ecbi14")))))
310 (#(roman caps medium)
311 . (10.0 . #(,(delay (ly:font-load "eccc10")))))
312 (#(roman slanted-caps medium)
313 . (10.0 . #(,(delay (ly:font-load "ecsc10")))))
314 (#(roman upright bold-narrow )
315 . (10.0 . #(,(delay (ly:font-load "ecrb10")))))
316 (#(sans upright medium)
317 . (10.0 . #(,(delay (ly:font-load "ecss8"))
318 ,(delay (ly:font-load "ecss10"))
319 ,(delay (ly:font-load "ecss12"))
320 ,(delay (ly:font-load "ecss17")))))
321 (#(typewriter upright medium)
322 . (10.0 . #(,(delay (ly:font-load "ectt8"))
323 ,(delay (ly:font-load "ectt10"))
324 ,(delay (ly:font-load "ectt12"))))))))
326 ;; (display (make-font-tree 1.0))
328 ;; Century Schoolbook fonts file names on Debian/Sid
329 (define-public (add-century-schoolbook-fonts node factor)
331 '((font-family . roman)
332 (font-shape . upright)
333 (font-series . medium)
334 (font-encoding . latin1))
335 `(10.0 . #(,(delay (ly:font-load "uncr8a")))))
337 '((font-family . roman)
338 (font-shape . italic)
339 (font-series . medium)
340 (font-encoding . latin1))
341 `(10.0 . #(,(delay (ly:font-load "uncri8a")))))
343 '((font-family . roman)
344 (font-shape . upright)
346 (font-encoding . latin1))
347 `(10.0 . #(,(delay (ly:font-load "uncb8a")))))
349 '((font-family . roman)
350 (font-shape . italic)
352 (font-encoding . latin1))
353 `(10.0 . #(,(delay (ly:font-load "uncbi8a"))))))
355 (define-public (make-cmr-tree factor)
356 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
357 (add-music-fonts n factor)
358 (add-cmr-fonts n factor)
359 (if (ly:kpathsea-find-file "lmr10.pfb")
360 (add-cork-lm-fonts n factor))
361 (if (ly:kpathsea-find-file "ecrm10.pfa")
362 (add-ec-fonts n factor))
365 (define-public (make-century-schoolbook-tree factor)
366 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
367 (add-music-fonts n factor)
368 (add-century-schoolbook-fonts n factor)
371 (define-public (magstep x)
372 (exp (* (/ x 6) (log 2))))