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))
83 (let* ((qual (next-qualifier default-qualifier-order fprops)))
84 (make-font-tree-node qual
85 (assoc-get qual fprops)))))
87 (define (next-qualifier order props)
89 ((and (null? props) (null? order))
91 ((null? props) (car order))
92 ((null? order) (caar props))
94 (if (assoc-get (car order) props)
96 (next-qualifier (cdr order) props)))))
98 (let* ((q (font-qualifier node))
99 (d (font-default node))
100 (v (assoc-get q fprops d))
101 (new-fprops (assoc-delete q fprops))
102 (child (hashq-ref (slot-ref node 'children)
108 (set! child (make-node new-fprops size-family))
109 (hashq-set! (slot-ref node 'children) v child)))
110 (if (pair? new-fprops)
111 (add-font child new-fprops size-family))))
114 (define-method (add-font (node <Font-tree-leaf>) fprops size-family)
115 (throw "must add to node, not leaf"))
118 (define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
119 (let* ((qual (font-qualifier node))
120 (def (font-default node))
121 (val (chain-assoc-get qual alist-chain def))
122 (desired-child (hashq-ref (font-children node) val)))
125 (g-lookup-font desired-child alist-chain)
126 (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
129 (define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
132 ;; two step call is handy for debugging.
133 (define (lookup-font node alist-chain)
134 (g-lookup-font node alist-chain))
137 ; Each size family is a vector of fonts, loaded with a delay.
138 ; The vector should be sorted according to ascending design size.
141 (define-public (add-music-fonts node factor)
145 (list (cons 'font-encoding (car x)))
146 (cons (* factor (cadr x))
151 ,(delay (ly:font-load "feta-alphabet11"))
152 ,(delay (ly:font-load "feta-alphabet13"))
153 ,(delay (ly:font-load "feta-alphabet14"))
154 ,(delay (ly:font-load "feta-alphabet16"))
155 ,(delay (ly:font-load "feta-alphabet18"))
156 ,(delay (ly:font-load "feta-alphabet20"))
157 ,(delay (ly:font-load "feta-alphabet23"))
158 ,(delay (ly:font-load "feta-alphabet26"))))
161 ,(delay (ly:font-load "feta-alphabet11"))
162 ,(delay (ly:font-load "feta-alphabet13"))
163 ,(delay (ly:font-load "feta-alphabet14"))
164 ,(delay (ly:font-load "feta-alphabet16"))
165 ,(delay (ly:font-load "feta-alphabet18"))
166 ,(delay (ly:font-load "feta-alphabet20"))
167 ,(delay (ly:font-load "feta-alphabet23"))
168 ,(delay (ly:font-load "feta-alphabet26"))))
172 ,(delay (ly:font-load "bigcheese11"))
173 ,(delay (ly:font-load "bigcheese13"))
174 ,(delay (ly:font-load "bigcheese14"))
175 ,(delay (ly:font-load "bigcheese16"))
176 ,(delay (ly:font-load "bigcheese18"))
177 ,(delay (ly:font-load "bigcheese20"))
178 ,(delay (ly:font-load "bigcheese23"))
179 ,(delay (ly:font-load "bigcheese26"))))
181 (fetaBraces 100.0 #(,(delay
182 (ly:font-load "aybabtu")))))))
184 (define-public (add-cmr-fonts node factor)
185 (add-font node '((font-encoding . TeX-math))
186 `(,(* factor 10) . #(,(delay (ly:font-load "msam10")))))
189 (add-font node `((font-encoding . TeX-text)
190 (font-series . ,(vector-ref (car x) 2))
191 (font-shape . ,(vector-ref (car x) 1))
192 (font-family . ,(vector-ref (car x) 0)))
193 (cons (* factor (cadr x))
195 `((#(roman upright medium)
196 . (10.0 . #(,(delay (ly:font-load "cmr6"))
197 ,(delay (ly:font-load "cmr8"))
198 ,(delay (ly:font-load "cmr10"))
199 ,(delay (ly:font-load "cmr17")))))
200 (#(roman upright bold)
201 . (10.0 . #(,(delay (ly:font-load "cmbx6"))
202 ,(delay (ly:font-load "cmbx8"))
203 ,(delay (ly:font-load "cmbx10"))
204 ,(delay (ly:font-load "cmbx12")))))
205 (#(roman italic medium)
206 . (10.0 . #(,(delay (ly:font-load "cmti7"))
207 ,(delay (ly:font-load "cmti10"))
208 ,(delay (ly:font-load "cmti12")))))
209 (#(roman italic bold)
210 . (10.0 . #(,(delay (ly:font-load "cmbxti8"))
211 ,(delay (ly:font-load "cmbxti10"))
212 ,(delay (ly:font-load "cmbxti14")))))
213 (#(roman caps medium)
214 . (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
215 (#(roman upright bold-narrow )
216 . (10.0 . #(,(delay (ly:font-load "cmb10")))))
217 (#(sans upright medium)
218 . (10.0 . #(,(delay (ly:font-load "cmss8"))
219 ,(delay (ly:font-load "cmss10"))
220 ,(delay (ly:font-load "cmss12"))
221 ,(delay (ly:font-load "cmss17")))))
222 (#(typewriter upright medium)
223 . (10.0 . #(,(delay (ly:font-load "cmtt8"))
224 ,(delay (ly:font-load "cmtt10"))
225 ,(delay (ly:font-load "cmtt12"))))))))
227 ;; Debian lmodern font support.
228 (define-public (add-cork-lm-fonts node factor)
231 (add-font node `((font-encoding . cork-lm)
232 (font-series . ,(vector-ref (car x) 2))
233 (font-shape . ,(vector-ref (car x) 1))
234 (font-family . ,(vector-ref (car x) 0)))
235 (cons (* factor (cadr x)) (cddr x))))
236 `((#(roman upright medium)
237 . (10.0 . #(,(delay (ly:font-load "lmr6"))
238 ,(delay (ly:font-load "lmr8"))
239 ,(delay (ly:font-load "lmr10"))
240 ,(delay (ly:font-load "lmr17")))))
241 (#(roman upright bold)
242 . (10.0 . #(,(delay (ly:font-load "lmbx6"))
243 ,(delay (ly:font-load "lmbx8"))
244 ,(delay (ly:font-load "lmbx10"))
245 ,(delay (ly:font-load "lmbx12")))))
246 (#(roman italic medium)
247 . (10.0 . #(,(delay (ly:font-load "lmri7"))
248 ,(delay (ly:font-load "lmri10"))
249 ,(delay (ly:font-load "lmri12")))))
250 (#(roman italic bold)
251 . (10.0 . #(,(delay (ly:font-load "lmbxi10")))))
252 (#(roman caps medium)
253 . (10.0 . #(,(delay (ly:font-load "lmcsc10")))))
254 (#(roman upright bold-narrow )
255 . (10.0 . #(,(delay (ly:font-load "lmb10")))))
256 (#(sans upright medium)
257 . (10.0 . #(,(delay (ly:font-load "lmss8"))
258 ,(delay (ly:font-load "lmss10"))
259 ,(delay (ly:font-load "lmss12"))
260 ,(delay (ly:font-load "lmss17")))))
261 (#(sans upright bold)
262 . (10.0 . #(,(delay (ly:font-load "lmssbx10")))))
264 (#(typewriter upright medium)
265 . (10.0 . #(,(delay (ly:font-load "lmtt8"))
266 ,(delay (ly:font-load "lmtt10"))
267 ,(delay (ly:font-load "lmtt12"))))))))
269 ;; ec-fonts-mftraced font support.
270 (define-public (add-ec-fonts node factor)
272 (lambda (x) (add-font node
273 `((font-encoding . Extended-TeX-Font-Encoding---Latin)
274 (font-series . ,(vector-ref (car x) 2))
275 (font-shape . ,(vector-ref (car x) 1))
276 (font-family . ,(vector-ref (car x) 0)))
277 (cons (* factor (cadr x)) (cddr x))))
279 `((#(roman upright medium)
280 . (10.0 . #(,(delay (ly:font-load "ecrm6"))
281 ,(delay (ly:font-load "ecrm8"))
282 ,(delay (ly:font-load "ecrm10"))
283 ,(delay (ly:font-load "ecrm17")))))
284 (#(roman upright bold)
285 . (10.0 . #(,(delay (ly:font-load "ecbx6"))
286 ,(delay (ly:font-load "ecbx8"))
287 ,(delay (ly:font-load "ecbx10"))
288 ,(delay (ly:font-load "ecbx12")))))
289 (#(roman italic medium)
290 . (10.0 . #(,(delay (ly:font-load "ecti7"))
291 ,(delay (ly:font-load "ecti10"))
292 ,(delay (ly:font-load "ecti12")))))
293 (#(roman italic bold)
294 . (10.0 . #(,(delay (ly:font-load "ecbi8"))
295 ,(delay (ly:font-load "ecbi10"))
296 ,(delay (ly:font-load "ecbi14")))))
297 (#(roman caps medium)
298 . (10.0 . #(,(delay (ly:font-load "eccc10")))))
299 (#(roman slanted-caps medium)
300 . (10.0 . #(,(delay (ly:font-load "ecsc10")))))
301 (#(roman upright bold-narrow )
302 . (10.0 . #(,(delay (ly:font-load "ecrb10")))))
303 (#(sans upright medium)
304 . (10.0 . #(,(delay (ly:font-load "ecss8"))
305 ,(delay (ly:font-load "ecss10"))
306 ,(delay (ly:font-load "ecss12"))
307 ,(delay (ly:font-load "ecss17")))))
308 (#(typewriter upright medium)
309 . (10.0 . #(,(delay (ly:font-load "ectt8"))
310 ,(delay (ly:font-load "ectt10"))
311 ,(delay (ly:font-load "ectt12"))))))))
313 ;; (display (make-font-tree 1.0))
315 ;; Century Schoolbook fonts file names on Debian/Sid
316 (define-public (add-century-schoolbook-fonts node factor)
318 '((font-family . roman)
319 (font-shape . upright)
320 (font-series . medium)
321 (font-encoding . latin1))
322 `(10.0 . #(,(delay (ly:font-load "uncr8a")))))
324 '((font-family . roman)
325 (font-shape . italic)
326 (font-series . medium)
327 (font-encoding . latin1))
328 `(10.0 . #(,(delay (ly:font-load "uncri8a")))))
330 '((font-family . roman)
331 (font-shape . upright)
333 (font-encoding . latin1))
334 `(10.0 . #(,(delay (ly:font-load "uncb8a")))))
336 '((font-family . roman)
337 (font-shape . italic)
339 (font-encoding . latin1))
340 `(10.0 . #(,(delay (ly:font-load "uncbi8a"))))))
342 (define-public (make-cmr-tree factor)
343 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
344 (add-music-fonts n factor)
345 (add-cmr-fonts n factor)
346 (if (ly:kpathsea-find-file "lmr10.pfb")
347 (add-cork-lm-fonts n factor))
348 (if (ly:kpathsea-find-file "ecrm10.pfa")
349 (add-ec-fonts n factor))
352 (define-public (make-century-schoolbook-tree factor)
353 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
354 (add-music-fonts n factor)
355 (add-century-schoolbook-fonts n factor)
358 (define-public (magstep x)
359 (exp (* (/ x 6) (log 2))))