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))
153 #(,(delay (ly:font-load "feta-nummer4"))
154 ,(delay (ly:font-load "feta-nummer6"))
155 ,(delay (ly:font-load "feta-nummer8"))
156 ,(delay (ly:font-load "feta-nummer10"))
157 ,(delay (ly:font-load "feta-nummer12"))
158 ,(delay (ly:font-load "feta-nummer16"))))
159 (fetaDynamic 14.0 #(,(delay (ly:font-load "feta-din6"))
160 ,(delay (ly:font-load "feta-din8"))
161 ,(delay (ly:font-load "feta-din10"))
162 ,(delay (ly:font-load "feta-din12"))
163 ,(delay (ly:font-load "feta-din14"))
164 ,(delay (ly:font-load "feta-din17"))))
167 #(,(delay (ly:make-virtual-font
168 (ly:font-load "feta11")
169 (ly:font-load "parmesan11")))
170 ,(delay (ly:make-virtual-font
171 (ly:font-load "feta13")
172 (ly:font-load "parmesan13")))
173 ,(delay (ly:make-virtual-font
174 (ly:font-load "feta14")
175 (ly:font-load "parmesan14")))
176 ,(delay (ly:make-virtual-font
177 (ly:font-load "feta16")
178 (ly:font-load "parmesan16")))
179 ,(delay (ly:make-virtual-font
180 (ly:font-load "feta18")
181 (ly:font-load "parmesan18")))
182 ,(delay (ly:make-virtual-font
183 (ly:font-load "feta20")
184 (ly:font-load "parmesan20")))
185 ,(delay (ly:make-virtual-font
186 (ly:font-load "feta23")
187 (ly:font-load "parmesan23")))
188 ,(delay (ly:make-virtual-font
189 (ly:font-load "feta26")
190 (ly:font-load "parmesan26")))))
193 (fetaBraces 15 #(,(delay
194 (ly:make-virtual-font
195 (ly:font-load "feta-braces-a")
196 (ly:font-load "feta-braces-b")
197 (ly:font-load "feta-braces-c")
198 (ly:font-load "feta-braces-d")
199 (ly:font-load "feta-braces-e")
200 (ly:font-load "feta-braces-f")
201 (ly:font-load "feta-braces-g")
202 (ly:font-load "feta-braces-h")
203 (ly:font-load "feta-braces-i"))))))))
205 (define-public (add-cmr-fonts node factor)
206 (add-font node '((font-encoding . TeX-math))
207 `(,(* factor 10) . #(,(delay (ly:font-load "msam10")))))
210 (add-font node `((font-encoding . TeX-text)
211 (font-series . ,(vector-ref (car x) 2))
212 (font-shape . ,(vector-ref (car x) 1))
213 (font-family . ,(vector-ref (car x) 0)))
214 (cons (* factor (cadr x))
216 `((#(roman upright medium)
217 . (10.0 . #(,(delay (ly:font-load "cmr6"))
218 ,(delay (ly:font-load "cmr8"))
219 ,(delay (ly:font-load "cmr10"))
220 ,(delay (ly:font-load "cmr17")))))
221 (#(roman upright bold)
222 . (10.0 . #(,(delay (ly:font-load "cmbx6"))
223 ,(delay (ly:font-load "cmbx8"))
224 ,(delay (ly:font-load "cmbx10"))
225 ,(delay (ly:font-load "cmbx12")))))
226 (#(roman italic medium)
227 . (10.0 . #(,(delay (ly:font-load "cmti7"))
228 ,(delay (ly:font-load "cmti10"))
229 ,(delay (ly:font-load "cmti12")))))
230 (#(roman italic bold)
231 . (10.0 . #(,(delay (ly:font-load "cmbxti8"))
232 ,(delay (ly:font-load "cmbxti10"))
233 ,(delay (ly:font-load "cmbxti14")))))
234 (#(roman caps medium)
235 . (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
236 (#(roman upright bold-narrow )
237 . (10.0 . #(,(delay (ly:font-load "cmb10")))))
238 (#(sans upright medium)
239 . (10.0 . #(,(delay (ly:font-load "cmss8"))
240 ,(delay (ly:font-load "cmss10"))
241 ,(delay (ly:font-load "cmss12"))
242 ,(delay (ly:font-load "cmss17")))))
243 (#(typewriter upright medium)
244 . (10.0 . #(,(delay (ly:font-load "cmtt8"))
245 ,(delay (ly:font-load "cmtt10"))
246 ,(delay (ly:font-load "cmtt12"))))))))
248 ;; Debian lmodern font support.
249 (define-public (add-cork-lm-fonts node factor)
252 (add-font node `((font-encoding . cork-lm)
253 (font-series . ,(vector-ref (car x) 2))
254 (font-shape . ,(vector-ref (car x) 1))
255 (font-family . ,(vector-ref (car x) 0)))
256 (cons (* factor (cadr x)) (cddr x))))
257 `((#(roman upright medium)
258 . (10.0 . #(,(delay (ly:font-load "lmr6"))
259 ,(delay (ly:font-load "lmr8"))
260 ,(delay (ly:font-load "lmr10"))
261 ,(delay (ly:font-load "lmr17")))))
262 (#(roman upright bold)
263 . (10.0 . #(,(delay (ly:font-load "lmbx6"))
264 ,(delay (ly:font-load "lmbx8"))
265 ,(delay (ly:font-load "lmbx10"))
266 ,(delay (ly:font-load "lmbx12")))))
267 (#(roman italic medium)
268 . (10.0 . #(,(delay (ly:font-load "lmri7"))
269 ,(delay (ly:font-load "lmri10"))
270 ,(delay (ly:font-load "lmri12")))))
271 (#(roman italic bold)
272 . (10.0 . #(,(delay (ly:font-load "lmbxi8"))
273 ,(delay (ly:font-load "lmbxi10"))
274 ,(delay (ly:font-load "lmbi14")))))
275 (#(roman caps medium)
276 . (10.0 . #(,(delay (ly:font-load "lmcsc10")))))
277 (#(roman upright bold-narrow )
278 . (10.0 . #(,(delay (ly:font-load "lmb10")))))
279 (#(sans upright medium)
280 . (10.0 . #(,(delay (ly:font-load "lmss8"))
281 ,(delay (ly:font-load "lmss10"))
282 ,(delay (ly:font-load "lmss12"))
283 ,(delay (ly:font-load "lmss17")))))
284 (#(sans upright bold)
285 . (10.0 . #(,(delay (ly:font-load "lmssbx10")))))
287 (#(typewriter upright medium)
288 . (10.0 . #(,(delay (ly:font-load "lmtt8"))
289 ,(delay (ly:font-load "lmtt10"))
290 ,(delay (ly:font-load "lmtt12"))))))))
292 ;; ec-fonts-mftraced font support.
293 (define-public (add-ec-fonts node factor)
295 (lambda (x) (add-font node
296 `((font-encoding . ec)
297 (font-series . ,(vector-ref (car x) 2))
298 (font-shape . ,(vector-ref (car x) 1))
299 (font-family . ,(vector-ref (car x) 0)))
300 (cons (* factor (cadr x)) (cddr x))))
302 `((#(roman upright medium)
303 . (10.0 . #(,(delay (ly:font-load "ecrm6"))
304 ,(delay (ly:font-load "ecrm8"))
305 ,(delay (ly:font-load "ecrm10"))
306 ,(delay (ly:font-load "ecrm17")))))
307 (#(roman upright bold)
308 . (10.0 . #(,(delay (ly:font-load "ecbx6"))
309 ,(delay (ly:font-load "ecbx8"))
310 ,(delay (ly:font-load "ecbx10"))
311 ,(delay (ly:font-load "ecbx12")))))
312 (#(roman italic medium)
313 . (10.0 . #(,(delay (ly:font-load "ecti7"))
314 ,(delay (ly:font-load "ecti10"))
315 ,(delay (ly:font-load "ecti12")))))
316 (#(roman italic bold)
317 . (10.0 . #(,(delay (ly:font-load "ecbi8"))
318 ,(delay (ly:font-load "ecbi10"))
319 ,(delay (ly:font-load "ecbi14")))))
320 (#(roman caps medium)
321 . (10.0 . #(,(delay (ly:font-load "eccc10")))))
322 (#(roman slanted-caps medium)
323 . (10.0 . #(,(delay (ly:font-load "ecsc10")))))
324 (#(roman upright bold-narrow )
325 . (10.0 . #(,(delay (ly:font-load "ecrb10")))))
326 (#(sans upright medium)
327 . (10.0 . #(,(delay (ly:font-load "ecss8"))
328 ,(delay (ly:font-load "ecss10"))
329 ,(delay (ly:font-load "ecss12"))
330 ,(delay (ly:font-load "ecss17")))))
331 (#(typewriter upright medium)
332 . (10.0 . #(,(delay (ly:font-load "ectt8"))
333 ,(delay (ly:font-load "ectt10"))
334 ,(delay (ly:font-load "ectt12"))))))))
336 ;; (display (make-font-tree 1.0))
338 ;; Century Schoolbook fonts file names on Debian/Sid
339 (define-public (add-century-schoolbook-fonts node factor)
341 '((font-family . roman)
342 (font-shape . upright)
343 (font-series . medium)
344 (font-encoding . latin1))
345 `(10.0 . #(,(delay (ly:font-load "uncr8a")))))
347 '((font-family . roman)
348 (font-shape . italic)
349 (font-series . medium)
350 (font-encoding . latin1))
351 `(10.0 . #(,(delay (ly:font-load "uncri8a")))))
353 '((font-family . roman)
354 (font-shape . upright)
356 (font-encoding . latin1))
357 `(10.0 . #(,(delay (ly:font-load "uncb8a")))))
359 '((font-family . roman)
360 (font-shape . italic)
362 (font-encoding . latin1))
363 `(10.0 . #(,(delay (ly:font-load "uncbi8a"))))))
365 (define-public (make-cmr-tree factor)
366 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
367 (add-music-fonts n factor)
368 (add-cmr-fonts n factor)
369 (if (ly:kpathsea-find-file "lmr10.pfb")
370 (add-cork-lm-fonts n factor))
371 (if (ly:kpathsea-find-file "ecrm10.pfa")
372 (add-ec-fonts n factor))
375 (define-public (make-century-schoolbook-tree factor)
376 (let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
377 (add-music-fonts n factor)
378 (add-century-schoolbook-fonts n factor)
381 (define-public (magstep x)
382 (exp (* (/ x 6) (log 2))))