-;;;; font.scm -- construct font trees
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
-;;;;
-;;;; (c) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; Copyright (C) 2004--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;;
+;;;; LilyPond is free software: you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation, either version 3 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; LilyPond is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
;; TODO:
;;
;; lookup-font should be written in C.
;;
+;; We have a tree, where each level of the tree is a qualifier
+;; (eg. encoding, family, shape, series etc.) this defines the levels
+;; in the tree. The first one is encoding, so we can directly select
+;; between text or music in the first step of the selection.
+(define default-qualifier-order
+ '(font-encoding font-family font-shape font-series))
+
(define-class <Font-tree-element>
())
qualifier default)
(make <Font-tree-node>
#:qualifier qualifier
- #:default default
+ #:default default
#:children (make-hash-table 11)))
(define-method (display (leaf <Font-tree-leaf>) port)
(map (lambda (x) (display x port))
(list
"#<Font-size-family:\n"
- (slot-ref leaf 'default-size)
+ (slot-ref leaf 'default-size)
(slot-ref leaf 'size-vector)
"#>"
)))
"(def: "
(font-default node)
") {\n"))
- (for-each
+ (for-each
(lambda (x)
(display "\n")
(display (car x) port)
(hash-table->alist (font-children node)))
(display "} }\n"))
-(define default-qualifier-order
- '(font-encoding font-family font-shape font-series))
(define-method (add-font (node <Font-tree-node>) fprops size-family)
(define (assoc-delete key alist)
(assoc-remove! (list-copy alist) key))
-
+
(define (make-node fprops size-family)
(if (null? fprops)
(make-font-tree-leaf (car size-family) (cdr size-family))
(define (lookup-font node alist-chain)
(g-lookup-font node alist-chain))
-
-;; Ugh. Currently, we load the PFB Feta fonts for `fetaDynamic' with
-;; Pango. This should be changed to load the Emmentaler fonts instead
-;; (with Pango too), but then we need support for a `font-style'
-;; property which isn't implemented yet.
-(define feta-alphabet-size-vector
- (list->vector
- (map (lambda (tup)
- (cons (ly:pt (cdr tup))
- (format "feta-alphabet~a ~a"
- (car tup)
- (ly:pt (cdr tup)))))
- '((11 . 11.22)
- (13 . 12.60)
- (14 . 14.14)
- (16 . 15.87)
- (18 . 17.82)
- (20 . 20)
- (23 . 22.45)
- (26 . 25.20)))))
+;; TODO - we could actually construct this by loading all OTFs and
+;; inspecting their design size fields.
+(define-public feta-design-size-mapping
+ '((11 . 11.22)
+ (13 . 12.60)
+ (14 . 14.14)
+ (16 . 15.87)
+ (18 . 17.82)
+ (20 . 20)
+ (23 . 22.45)
+ (26 . 25.20)))
;; Each size family is a vector of fonts, loaded with a delay. The
;; vector should be sorted according to ascending design size.
-(define-public (add-music-fonts node factor)
+(define-public (add-music-fonts node name family design-size-alist factor)
+ "Set up music fonts.
+
+Arguments:
+@itemize
+@item
+@var{node} is the font tree to modify.
+
+@item
+@var{name} is the basename for the music font.
+@file{@var{name}-<designsize>.otf} should be the music font,
+@file{@var{name}-brace.otf} should have piano braces.
+
+@item
+@var{family} is the family name of the music font.
+
+@item
+@var{design-size-alist} is a list of @code{(rounded . designsize)}.
+@code{rounded} is a suffix for font filenames, while @code{designsize}
+should be the actual design size. The latter is used for text fonts
+loaded through pango/fontconfig.
+
+@item
+@var{factor} is a size factor relative to the default size that is being
+used. This is used to select the proper design size for the text fonts.
+@end itemize"
(for-each
(lambda (x)
(add-font node
- (list (cons 'font-encoding (car x)))
+ (list (cons 'font-encoding (car x))
+ (cons 'font-family family))
(cons (* factor (cadr x))
(caddr x))))
- `((fetaDynamic ,(ly:pt 20.0) ,feta-alphabet-size-vector)
- (fetaNumber ,(ly:pt 20.0) ,feta-alphabet-size-vector)
+
+ `((fetaText ,(ly:pt 20.0)
+ ,(list->vector
+ (map (lambda (tup)
+ (cons (ly:pt (cdr tup))
+ (format "~a-~a ~a"
+ name
+ (car tup)
+ (ly:pt (cdr tup)))))
+ design-size-alist)))
(fetaMusic ,(ly:pt 20.0)
- #(,(delay (ly:system-font-load "emmentaler-11"))
- ,(delay (ly:system-font-load "emmentaler-13"))
- ,(delay (ly:system-font-load "emmentaler-14"))
- ,(delay (ly:system-font-load "emmentaler-16"))
- ,(delay (ly:system-font-load "emmentaler-18"))
- ,(delay (ly:system-font-load "emmentaler-20"))
- ,(delay (ly:system-font-load "emmentaler-23"))
- ,(delay (ly:system-font-load "emmentaler-26"))))
+ ,(list->vector
+ (map (lambda (size-tup)
+ (delay (ly:system-font-load
+ (format "~a-~a" name (car size-tup)))))
+ design-size-alist
+ )))
(fetaBraces ,(ly:pt 20.0)
- #(,(delay (ly:system-font-load "aybabtu")))))))
-
+ #(,(delay (ly:system-font-load
+ (format "~a-brace" name)))))
+ )))
+
(define-public (add-pango-fonts node lily-family family factor)
+ ;; Synchronized with the `text-font-size' variable in
+ ;; layout-set-absolute-staff-size-in-module (see paper.scm).
+ (define text-font-size (ly:pt (* factor 11.0)))
+
(define (add-node shape series)
(add-font node
`((font-family . ,lily-family)
(font-series . ,series)
(font-encoding . latin1) ;; ugh.
)
- `(,(ly:pt (* factor 11.0))
+ `(,text-font-size
. #(,(cons
(ly:pt 12)
(ly:make-pango-description-string
(font-shape . ,shape)))
(ly:pt 12)))))))
- (add-node 'upright 'normal)
- (add-node 'caps 'normal)
- (add-node 'upright 'bold)
+ (add-node 'upright 'normal)
+ (add-node 'caps 'normal)
+ (add-node 'upright 'bold)
(add-node 'italic 'normal)
(add-node 'italic 'bold))
(define-public (make-pango-font-tree roman-str sans-str typewrite-str factor)
(let ((n (make-font-tree-node 'font-encoding 'fetaMusic)))
- (add-music-fonts n factor)
+ (add-music-fonts n "emmentaler" 'feta feta-design-size-mapping factor)
(add-pango-fonts n 'roman roman-str factor)
(add-pango-fonts n 'sans sans-str factor)
(add-pango-fonts n 'typewriter typewrite-str factor)
(define-public (make-century-schoolbook-tree factor)
(make-pango-font-tree
- "Century Schoolbook L"
- "Sans" "Mono" factor))
+ "Century Schoolbook L,serif"
+ "sans-serif" "monospace" factor))
+
+(define-public all-text-font-encodings
+ '(latin1))
+
+(define-public all-music-font-encodings
+ '(fetaBraces
+ fetaMusic
+ fetaText))
(define-public (magstep s)
(exp (* (/ s 6) (log 2))))