-;;;
-;;; font.scm -- implement Font stuff
-;;;
-;;; source file of the GNU LilyPond music typesetter
-;;;
-;;; (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
-;;;
-
-;; Should separate default sizes
-;; into separate list/alist ?
-
-
-"
-Each entry in this vector has the following format
-
-
- (cons
- #(QUALIFIERS)
- (cons DEFAULT-SIZE
- #(SIZE-FONT-ENTRIES... ) ))
-
-where each SIZE-FONT-ENTRY is
-
- (cons DESIGN-SIZE FONT-NAME)
-
-or
-
- (cons DESIGN-SIZE (list FONT-NAME1 FONT-NAME2 .. ))
-
-"
-
-(define-public (magstep x)
- (exp (* (/ x 6) (log 2))))
-
-
-(define-public paper20-font-vector
- '((#(medium upright number) .
- (10 . #((10.0 . "feta-nummer10"))))
- (#(medium upright roman) .
- (10.0 . #((6.0 . "cmr6")
- (8.0 . "cmr8")
- (10.0 . "cmr10")
- (17.0 . "cmr17")
- )))
- (#(* * music).
- (20.0 . #((11.22 . ("feta11" "parmesan11"))
- (12.60 . ("feta13" "parmesan13"))
- (14.14 . ("feta14" "parmesan14"))
- (15.87 . ("feta16" "parmesan16"))
- (17.82 . ("feta18" "parmesan18"))
- (20.0 . ("feta20" "parmesan20"))
- (22.45 . ("feta23" "parmesan23"))
- (25.20 . ("feta26" "parmesan26"))
- )))
- (#(medium upright sans) .
- (10.0 . #((8.0 . "cmss8")
- (10.0 . "cmss10")
- (12.0 . "cmss12")
- (17.0 . "cmss17")
- )))
- (#(medium upright typewriter) .
- (10.0 . #((8.0 . "cmtt8")
- (10.0 . "cmtt10")
- (12.0 . "cmtt12")
- )))
- (#(bold italic roman) .
- (10.0 . #((8.0 . "cmbxti8")
- (10.0 . "cmbxti10")
- (14.0 . "cmbxti14")
- )))
- (#(medium italic roman) .
- (10.0 . #((7.0 . "cmti7")
- (10.0 . "cmti10")
- (12.0 . "cmti12")
- )))
- (#(bold upright roman) .
- (10.0 . #((6.0 . "cmbx6")
- (8.0 . "cmbx8")
- (10.0 . "cmbx10")
- (12.0 . "cmbx12")
- )))
- (#(bold-narrow upright roman) .
- (10.0 . #((10.0 . "cmb10")
- )))
- (#(medium caps roman) .
- (10.0 . #((10.0 . "cmcsc10"))))
-
- (#(* * dynamic) .
- (14.0 . #((6.0 . "feta-din6"
- 8.0 . "feta-din8")
- (10.0 . "feta-din10")
- (12.0 . "feta-din10")
- (14.0 . "feta-din14")
- (17.0 . "feta-din17")
- )))
- (#(* * math) .
- (10.0 . #((10.0 . "msam10"))))
- ))
-
-(define (scale-font-entry entry factor)
- (cons
- (car entry)
- (cons (* (cadr entry) factor)
- (cddr entry))))
-
-(define size-independent-fonts
- '((#(* * braces) .
- (10 . #((10.0 . ("feta-braces00"
- "feta-braces10"
- "feta-braces20"
- "feta-braces30"
- "feta-braces40"
- "feta-braces50"
- "feta-braces60"
- "feta-braces70"
- "feta-braces80")))))))
-
-(define-public (scale-font-list factor)
- (append size-independent-fonts
- (map (lambda (y) (scale-font-entry y factor)) paper20-font-vector)
- ))
-
-;
+;;;; This file is part of LilyPond, the GNU music typesetter.
+;;;;
+;;;; Copyright (C) 2004--2012 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>
+ ())
+
+(define-class <Font-tree-leaf> (<Font-tree-element>)
+ (default-size #:init-keyword #:default-size)
+ (size-vector #:init-keyword #:size-vector))
+
+(define-class <Font-tree-node> (<Font-tree-element>)
+ (qualifier #:init-keyword #:qualifier #:accessor font-qualifier)
+ (default #:init-keyword #:default #:accessor font-default)
+ (children #:init-keyword #:children #:accessor font-children))
+
+(define (make-font-tree-leaf size size-font-vector)
+ (make <Font-tree-leaf> #:default-size size #:size-vector size-font-vector))
+
+(define (make-font-tree-node
+ qualifier default)
+ (make <Font-tree-node>
+ #:qualifier qualifier
+ #:default default
+ #:children (make-hash-table 11)))
+
+(define-method (display (leaf <Font-tree-leaf>) port)
+ (for-each (lambda (x) (display x port))
+ (list
+ "#<Font-size-family:\n"
+ (slot-ref leaf 'default-size)
+ (slot-ref leaf 'size-vector)
+ "#>"
+ )))
+
+(define-method (display (node <Font-tree-node>) port)
+ (for-each
+ (lambda (x)
+ (display x port))
+ (list
+ "Font_node {\nqual: "
+ (font-qualifier node)
+ "(def: "
+ (font-default node)
+ ") {\n"))
+ (for-each
+ (lambda (x)
+ (display "\n")
+ (display (car x) port)
+ (display "=" port)
+ (display (cdr x) port))
+ (hash-table->alist (font-children node)))
+ (display "} }\n"))
+
+
+(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))
+ (let* ((qual (next-qualifier default-qualifier-order fprops)))
+ (make-font-tree-node qual
+ (assoc-get qual fprops)))))
+
+ (define (next-qualifier order props)
+ (cond
+ ((and (null? props) (null? order))
+ #f)
+ ((null? props) (car order))
+ ((null? order) (caar props))
+ (else
+ (if (assoc-get (car order) props)
+ (car order)
+ (next-qualifier (cdr order) props)))))
+
+ (let* ((q (font-qualifier node))
+ (d (font-default node))
+ (v (assoc-get q fprops d))
+ (new-fprops (assoc-delete q fprops))
+ (child (hashq-ref (slot-ref node 'children)
+ v #f)))
+ (if (not child)
+ (begin
+ (set! child (make-node new-fprops size-family))
+ (hashq-set! (slot-ref node 'children) v child)))
+ (if (pair? new-fprops)
+ (add-font child new-fprops size-family))))
+
+(define-method (add-font (node <Font-tree-leaf>) fprops size-family)
+ (throw "must add to node, not leaf"))
+
+(define-method (g-lookup-font (node <Font-tree-node>) alist-chain)
+ (let* ((qual (font-qualifier node))
+ (def (font-default node))
+ (val (chain-assoc-get qual alist-chain def))
+ (desired-child (hashq-ref (font-children node) val)))
+
+ (if desired-child
+ (g-lookup-font desired-child alist-chain)
+ (g-lookup-font (hashq-ref (font-children node) def) alist-chain))))
+
+(define-method (g-lookup-font (node <Font-tree-leaf>) alist-chain)
+ node)
+
+;; two step call is handy for debugging.
+(define (lookup-font node alist-chain)
+ (g-lookup-font node alist-chain))
+
+;; 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 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))
+ (cons 'font-family family))
+ (cons (* factor (cadr x))
+ (caddr x))))
+
+ `((fetaText ,(ly:pt 20.0)
+ ,(list->vector
+ (map (lambda (tup)
+ (cons (ly:pt (cdr tup))
+ (format #f "~a-~a ~a"
+ name
+ (car tup)
+ (ly:pt (cdr tup)))))
+ design-size-alist)))
+ (fetaMusic ,(ly:pt 20.0)
+ ,(list->vector
+ (map (lambda (size-tup)
+ (delay (ly:system-font-load
+ (format #f "~a-~a" name (car size-tup)))))
+ design-size-alist
+ )))
+ (fetaBraces ,(ly:pt 20.0)
+ #(,(delay (ly:system-font-load
+ (format #f "~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-shape . ,shape)
+ (font-series . ,series)
+ (font-encoding . latin1) ;; ugh.
+ )
+ `(,text-font-size
+ . #(,(cons
+ (ly:pt 12)
+ (ly:make-pango-description-string
+ `(((font-family . ,family)
+ (font-series . ,series)
+ (font-shape . ,shape)))
+ (ly:pt 12)))))))
+
+ (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 "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)
+ n))
+
+(define-public (make-century-schoolbook-tree factor)
+ (make-pango-font-tree
+ "Century Schoolbook L"
+ "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))))
+
+(define-public (magnification->font-size m)
+ (* 6 (/ (log m) (log 2))))
projects / lilypond.git / blobdiff