ly/toc-init.ly

   1 \version "2.12.0"
   2
   3 %% defined later, in a closure
   4 #(define-public (add-toc-item! markup-symbol text)
   5   #f)
   6 #(define-public (toc-items)
   7   #f)
   8
   9 #(let ((toc-item-list (list)))
  10    (set! add-toc-item!
  11          (lambda (markup-symbol text)
  12            (let ((label (gensym "toc")))
  13              (set! toc-item-list
  14                    (cons (list label markup-symbol text)
  15                          toc-item-list))
  16              (make-music 'EventChord
  17                'page-marker #t
  18                'page-label label
  19                'elements (list (make-music 'LabelEvent
  20                                  'page-label label))))))
  21    (set! toc-items (lambda ()
  22                      (reverse toc-item-list))))
  23
  24 \paper {
  25   tocTitleMarkup = \markup \huge \column {
  26     \fill-line { \null "Table of Contents" \null }
  27     \hspace #1
  28   }
  29   tocItemMarkup = \markup \fill-line {
  30     \fromproperty #'toc:text \fromproperty #'toc:page
  31   }
  32 }
  33
  34 #(define-markup-list-command (table-of-contents layout props) ()
  35   ( _i "Outputs the table of contents, using the paper variable
  36 @code{tocTitleMarkup} for its title, then the list of lines
  37 built using the @code{tocItem} music function
  38 Usage: @code{\\markuplines \\table-of-contents}" )
  39   (cons (interpret-markup layout props
  40                           (ly:output-def-lookup layout 'tocTitleMarkup))
  41         (space-lines (chain-assoc-get 'baseline-skip props)
  42                     (map (lambda (toc-item)
  43                            (let ((label (car toc-item))
  44                                  (toc-markup (cadr toc-item))
  45                                  (text (caddr toc-item)))
  46                              (interpret-markup
  47                                layout
  48                                (cons (list (cons 'toc:page
  49                                             (markup #:page-ref label "XXX" "?"))
  50                                            (cons 'toc:text text))
  51                                      props)
  52                                (ly:output-def-lookup layout toc-markup))))
  53                          (toc-items)))))
  54
  55 tocItem =
  56 #(define-music-function (parser location text) (markup?)
  57    "Add a line to the table of content, using the @code{tocItemMarkup} paper
  58 variable markup"
  59    (add-toc-item! 'tocItemMarkup text))