Hello,
if the first-page-number is different than 1, then the page-links in the PDF
(i.e. TOC, \page-link, \label & \page-ref) lead you to the wrong page.
E.g. first-page-number = 3; then a link to page 4 will lead you to the 4th
page, but this is page 6.
(done with Lilypond 2.18.2 on Windows, both Acrobat and SumatraPDF)
Example:
#(set-default-paper-size "a6")
\paper {
first-page-number = 3
}
M = {
\repeat unfold 70 c''1
\bar "|."
}
\markuplist \table-of-contents
\markup \column {
" "
\page-link #3 "Page 3"
\page-link #4 "Page 4"
\page-link #5 "Page 5"
\page-link #6 "Page 6"
\page-link #7 "Page 7"
}
\pageBreak
\tocItem "Y"
\label #'Y
\score { \M \header { piece = "Y" } }
\tocItem "D"
\label #'D
\score { \M \header { piece = "D" } }
\pageBreak
\markup \column {
\fill-line { \null "Index:" \null }
\with-link #'D \fill-line {"D" \page-ref #'D "0" "?"}
\with-link #'Y \fill-line {"Y" \page-ref #'Y "0" "?"}
}
%EndOfExample
As I did find find a way how to path the SCM files framework-ps.scm and
output-ps.scm
in order to correct it, this bug is not critical - but I did not test my
patch with multiple books
or multiple bookparts in the LY file.
This patch just defines a global variable to store the offset, stores there
the offset which
is calculated in procedure output-framework, and subtracts this offset in
procedure page-link:
FILE scm/framework-ps.scm (after use-modules):
+(define-public page-number-decrement 0)
(define format ergonomic-simple-format)
FILE scm/framework-ps.scm (in definition of function output-framework):
(port (ly:outputter-port outputter)))
+ (set! page-number-decrement page-number)
(if (ly:get-option 'clip-systems)
FILE scm/output-ps.scm (in definition of function page-link):
(ly:format "~a ~a currentpoint vector_add ~a ~a currentpoint
vector_add ~a mark_page_link"
(car x)
(car y)
(cdr x)
(cdr y)
+ (- page-no page-number-decrement))
- page-no)
P.S. I do not claim this patch is done in a good programming style.
ArnoldTheresius
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