'(blot-diameter
bottom-margin
cm
- foot-separation
- head-separation
horizontal-shift
in
indent
(("binding-offset" . ,w) . '())
(("top-margin" . ,h) . '())
(("bottom-margin" . ,h) . '())
- (("head-separation" . ,h) . '())
- (("foot-separation" . ,h) . '())
(("indent" . ,w) . '())
(("short-indent" . ,w) . '())))
(scaled-values
;;; that in parse-scm.cc
(ly:warning (_ "Must use #(set-paper-size .. ) within \\paper { ... }"))))
-(define-public (scale-layout pap scale)
- (let* ((new-pap (ly:output-def-clone pap))
- (dim-vars (ly:output-def-lookup pap 'dimension-variables))
- (old-scope (ly:output-def-scope pap))
- (scope (ly:output-def-scope new-pap)))
+(define-public (scale-layout paper scale)
+ "Return a clone of the paper, scaled by the given scale factor."
+ (let* ((new-paper (ly:output-def-clone paper))
+ (dim-vars (ly:output-def-lookup paper 'dimension-variables))
+ (old-scope (ly:output-def-scope paper))
+ (scope (ly:output-def-scope new-paper)))
(for-each
(lambda (v)
(val (if (variable? var) (variable-ref var) #f)))
(if (number? val)
- (module-define! scope v
- (/ val scale))
-
- ;; spurious warnings, eg. for paper-width, paper-height.
- ;; (ly:warning (_ "not a number, ~S = ~S " v val))
+ (module-define! scope v (/ val scale))
+ ;; Cannot warn for non-numbers, eg. for paper-width, paper-height.
)))
-
dim-vars)
-
- new-pap))
+ ;; Mark the clone.
+ (ly:output-def-set-variable! new-paper 'cloned #t)
+ new-paper))