1 ;; As an excercise, do it with records.
2 ;; Should use GOOPS, really.
6 ;; lookup-font should be written in C.
8 ;; should dump tree to .texi as internal documentation
10 ;; * should extract design sizes from fonts: fonts should
11 ;; be read off the disk, on demand, something like:
13 ;; cmr -> ((font-load "cmr6") (font-load "cmr8") .. )
16 (define-class <Font-tree-element>
20 (define-class <Font-tree-leaf> (<Font-tree-element>)
21 (default-size #:init-keyword #:default-size)
22 (size-vector #:init-keyword #:size-vector))
24 (define-class <Font-tree-node> (<Font-tree-element>)
25 (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
26 (default #:init-keyword #:default #:accessor font-default)
27 (children #:init-keyword #:children #:accessor font-children))
29 (define (make-font-tree-leaf size size-font-vector)
30 (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
32 (define (make-font-tree-node
34 (make <Font-tree-node>
37 #:children (make-hash-table 11)))
39 (define-method (display (leaf <Font-tree-leaf>) port)
40 (map (lambda (x) (display x port))
42 "Font-size-family: \n"
43 (slot-ref leaf 'default-size)
44 (slot-ref leaf 'size-vector) )))
46 (define-method (display (node <Font-tree-node>) port)
53 "Font_node { \nqual: "
61 (display (car x) port)
63 (display (cdr x) port))
64 (hash-table->alist (font-children node)))
68 (define default-qualifier-order
69 '(font-encoding font-family font-shape font-series))
71 (define-method (add-font (node <Font-tree-node>) fprops size-family)
72 (define (assoc-delete key alist)
73 (assoc-remove! (list-copy alist) key))
74 (define (make-node fprops size-family)
76 (make-font-tree-leaf (car size-family) (cdr size-family))
78 ((qual (next-qualifier default-qualifier-order fprops)))
79 (make-font-tree-node qual
80 (assoc-get qual fprops)))
82 (define (next-qualifier order props)
84 ((and (null? props) (null? order))
86 ((null? props) (car order))
87 ((null? order) (caar props))
89 (if (assoc-get (car order) props)
91 (next-qualifier (cdr order) props))
95 ((q (font-qualifier node))
96 (d (font-default node))
97 (v (assoc-get q fprops d))
98 (new-fprops (assoc-delete q fprops))
99 (child (hashq-ref (slot-ref node 'children)
105 (set! child (make-node new-fprops size-family))
106 (hashq-set! (slot-ref node 'children) v child)))
107 (if (pair? new-fprops)
108 (add-font child new-fprops size-family))))
111 (define-method (add-font (node <Font-tree-leaf>) fprops size-family)
112 (throw "must add to node, not leaf"))
115 (define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
117 ((qual (font-qualifier node))
118 (def (font-default node))
119 (val (chain-assoc-get qual alist-chain def))
120 (desired-child (hashq-ref (font-children node) val))
124 (g-lookup-font desired-child alist-chain)
125 (g-lookup-font (hashq-ref (font-children node) def) alist-chain)
128 (define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
131 ;; two step call is handy for debugging.
132 (define (lookup-font node alist-chain)
133 (g-lookup-font node alist-chain))
136 ; Each size family is a vector of fonts, loaded with a delay.
137 ; The vector should be sorted according to ascending design size.
140 (define-public (make-font-tree factor)
142 ((n (make-font-tree-node 'font-encoding 'music))
148 (list (cons 'font-encoding (car x)))
149 (cons (* factor (cadr x))
152 #(,(delay (ly:font-load "feta-nummer4"))
153 ,(delay (ly:font-load "feta-nummer6"))
154 ,(delay (ly:font-load "feta-nummer8"))
155 ,(delay (ly:font-load "feta-nummer10"))
156 ,(delay (ly:font-load "feta-nummer12"))
157 ,(delay (ly:font-load "feta-nummer16"))))
158 (dynamic 14.0 #(,(delay (ly:font-load "feta-din6"))
159 ,(delay (ly:font-load "feta-din8"))
160 ,(delay (ly:font-load "feta-din10"))
161 ,(delay (ly:font-load "feta-din12"))
162 ,(delay (ly:font-load "feta-din14"))
163 ,(delay (ly:font-load "feta-din17"))
165 (math 10 #(,(delay (ly:font-load "msam10"))))
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")))
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"))
210 `((font-encoding . 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))
217 `((#(roman upright medium) .
218 (10.0 . #(,(delay (ly:font-load "cmr6"))
219 ,(delay (ly:font-load "cmr8"))
220 ,(delay (ly:font-load "cmr10"))
221 ,(delay (ly:font-load "cmr17"))
224 (#(roman upright bold) .
225 (10.0 . #(,(delay (ly:font-load "cmbx6"))
226 ,(delay (ly:font-load "cmbx8"))
227 ,(delay (ly:font-load "cmbx10"))
228 ,(delay (ly:font-load "cmbx12"))
231 (#(roman italic medium) .
232 (10.0 . #(,(delay (ly:font-load "cmti7"))
233 ,(delay (ly:font-load "cmti10"))
234 ,(delay (ly:font-load "cmti12"))
236 (#(roman italic bold) .
237 (10.0 . #(,(delay (ly:font-load "cmbxti8"))
238 ,(delay (ly:font-load "cmbxti10"))
239 ,(delay (ly:font-load "cmbxti14"))
242 (#(roman caps medium) .
243 (10.0 . #(,(delay (ly:font-load "cmcsc10")))))
245 (#(roman upright bold-narrow ) .
246 (10.0 . #(,(delay (ly:font-load "cmb10"))
249 (#(sans upright medium) .
250 (10.0 . #(,(delay (ly:font-load "cmss8"))
251 ,(delay (ly:font-load "cmss10"))
252 ,(delay (ly:font-load "cmss12"))
253 ,(delay (ly:font-load "cmss17"))
255 (#(typewriter upright medium) .
256 (10.0 . #(,(delay (ly:font-load "cmtt8"))
257 ,(delay (ly:font-load "cmtt10"))
258 ,(delay (ly:font-load "cmtt12"))
263 ; (display (make-font-tree 1.0))
265 (define-public (magstep x)
266 (exp (* (/ x 6) (log 2))))