1 ;;;; paper.scm -- manipulate the paper and layout block.
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 (define-public (set-paper-dimension-variables mod)
8 (module-define! mod 'dimension-variables
9 '(pt mm cm in staffheight staff-space
10 betweensystemspace betweensystempadding
11 linewidth indent hsize vsize
12 staffspace linethickness ledgerlinethickness
13 blotdiameter interscoreline leftmargin rightmargin)))
15 (define-public (layout-set-staff-size sz)
16 "Function to be called inside a \\layout{} block to set the staff size."
17 (let* ((m (current-module))
22 ;; linear interpolation.
35 (module-define! m 'text-font-size (* 12 (/ sz (* 20 pt))))
37 (module-define! m 'outputscale ss)
38 (module-define! m 'fonts (make-cmr-tree (/ sz (* 20 pt))))
39 (module-define! m 'staffheight sz)
40 (module-define! m 'staff-space ss)
41 (module-define! m 'staffspace ss)
43 ;; !! synchronize with feta-params.mf
44 (module-define! m 'linethickness lt)
45 (module-define! m 'ledgerlinethickness (+ (* 0.5 pt) (/ ss 10)))
46 (module-define! m 'blotdiameter (* 0.35 pt))
47 (module-define! m 'interscoreline (* 4 mm))))
49 (define-public (set-global-staff-size sz)
50 "Set the default staff size, where SZ is thought to be in PT."
51 (let* ((old-mod (current-module))
52 (pap (eval '$defaultpaper old-mod))
53 (in-layout? (or (module-defined? old-mod 'is-paper)
54 (module-defined? old-mod 'is-layout)))
56 ; maybe not necessary.
57 ; but let's be paranoid. Maybe someone still refers to the
59 (new-paper (ly:output-def-clone pap))
61 (new-scope (ly:output-def-scope new-paper)))
64 (ly:warn "Not in toplevel scope"))
65 (set-current-module new-scope)
66 (layout-set-staff-size (* sz (eval 'pt new-scope)))
67 (set-current-module old-mod)
68 (module-define! old-mod '$defaultpaper new-paper)))
70 (define-public paper-alist
71 '(("a6" . (cons (* 105 mm) (* 148.95 mm)))
72 ("a5" . (cons (* 148.95 mm) (* 210 mm)))
73 ("a4" . (cons (* 210 mm) (* 297.9 mm)))
74 ("a3" . (cons (* 297.9 mm) (* 420 mm)))
75 ("legal" . (cons (* 8.5 in) (* 14.0 in)))
76 ("letter" . (cons (* 8.5 in) (* 11.0 in)))
77 ("tabloid" . (cons (* 11.0 in) (* 17.0 in)))))
79 ;; todo: take dimension arguments.
81 (define (set-paper-dimensions m w h)
82 "M is a module (i.e. layout->scope_ )"
83 (let* ((mm (eval 'mm m)))
84 (module-define! m 'hsize w)
85 (module-define! m 'vsize h)
86 (module-define! m 'linewidth (- w (* 20 mm)))
87 (module-define! m 'indent (/ w 14))
89 ;; page layout - what to do with (printer specific!) margin settings?
90 (module-define! m 'topmargin (* 5 mm))
91 (module-define! m 'bottommargin (* 6 mm))
92 (module-define! m 'headsep (* 4 mm))
93 (module-define! m 'footsep (* 4 mm))
94 (module-define! m 'leftmargin #f)
95 (module-define! m 'firstpagenumber 1)
96 (module-define! m 'printfirstpagenumber #f)
97 (module-define! m 'rightmargin (* 10 mm))))
99 (define (internal-set-paper-size module name landscape?)
101 (cons (cdr x) (car x)))
103 (let* ((entry (assoc name paper-alist))
104 (is-paper? (module-defined? module 'is-paper))
105 (mm (eval 'mm module)))
109 (ly:warning "This is not a \\layout {} object, ~S"
113 (set! entry (eval (cdr entry) module))
115 (set! entry (swap entry)))
116 (set-paper-dimensions module (car entry) (cdr entry))
118 (module-define! module 'papersizename name)
121 (module-define! module 'landscape #t)))
123 (ly:warn (string-append "Unknown papersize: " name))))))
125 (define-public (set-default-paper-size name . rest)
126 (internal-set-paper-size
127 (ly:output-def-scope (eval '$defaultpaper (current-module)))
129 (memq 'landscape rest)))
131 (define-public (set-paper-size name . rest)
132 (if (module-defined? (current-module) 'is-paper)
133 (internal-set-paper-size (current-module) name
134 (memq 'landscape rest))
136 ;;; TODO: should raise (generic) exception with throw, and catch
137 ;;; that in parse-scm.cc
138 (ly:warn "Must use #(set-paper-size .. ) within \\paper { ... }")))
140 (define-public (scale-layout pap scale)
141 (let* ((new-pap (ly:output-def-clone pap))
142 (dim-vars (ly:output-def-lookup pap 'dimension-variables))
143 (old-scope (ly:output-def-scope pap))
144 (scope (ly:output-def-scope new-pap)))
148 (let* ((var (module-variable old-scope v))
149 (val (if (variable? var) (variable-ref var) #f)))
152 (module-define! scope v
155 ;; spurious warnings, eg. for hsize, vsize.
156 ;; (ly:warn "not a number, ~S = ~S " v val)