;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2004--2007 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; (c) 2004--2008 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
(define-module (scm layout-page-layout)
(= (interval-start system-extent)
(interval-end system-extent))))))
-(define (stretch-and-draw-page paper-book systems page-number ragged last)
+(define (stretch-and-draw-page paper-book systems page-number ragged
+ is-last-bookpart is-bookpart-last-page)
(define (max-stretch sys)
(if (ly:grob? sys)
(ly:grob-property sys 'max-stretch)
(let* ((page (make-page paper-book
'page-number page-number
- 'is-last last))
+ 'is-last-bookpart is-last-bookpart
+ 'is-bookpart-last-page is-bookpart-last-page))
(paper (ly:paper-book-paper paper-book))
(height (page-printable-height page))
; there is a certain amount of impreciseness going on here:
"Ideal distance between `line' reference position and `next-line'
reference position. If next-line is #f, return #f."
(and next-line
- (max (+ (max 0 (- (+ (interval-end (paper-system-staff-extents next-line))
- (if ignore-padding 0 (line-next-padding line next-line layout)))
- (interval-start (paper-system-staff-extents line))))
- (line-next-space line next-line layout))
- (line-minimum-distance line next-line layout ignore-padding))))
+ (max 0
+ (+ (- (+ (interval-end (paper-system-staff-extents next-line))
+ (if ignore-padding 0 (line-next-padding line next-line layout)))
+ (interval-start (paper-system-staff-extents line)))
+ (line-next-space line next-line layout)))))
(define (first-line-position line layout)
"Position of the first line on page"
inter-system-space))
user)))
-(define (walk-paths done-lines best-paths current-lines last current-best
- paper-book page-alist)
+(define (walk-paths done-lines best-paths current-lines is-last-bookpart
+ is-bookpart-last-page current-best paper-book page-alist)
"Return the best optimal-page-break-node that contains
CURRENT-LINES. DONE-LINES.reversed ++ CURRENT-LINES is a consecutive
ascending range of lines, and BEST-PATHS contains the optimal breaks
(let* ((paper (ly:paper-book-paper paper-book))
(this-page (make-page
paper-book
- 'is-last last
+ 'is-last-bookpart is-last-bookpart
+ 'is-bookpart-last-page is-bookpart-last-page
'page-number (if (null? best-paths)
(ly:output-def-lookup paper 'first-page-number)
(1+ (page-page-number (first best-paths))))))
(ragged-all (eq? #t (ly:output-def-lookup paper 'ragged-bottom)))
(ragged-last (eq? #t (ly:output-def-lookup paper 'ragged-last-bottom)))
- (ragged (or ragged-all (and ragged-last last)))
+ (ragged (or ragged-all (and ragged-last is-bookpart-last-page)))
(space-to-fill (page-maximum-space-to-fill this-page current-lines paper))
(vertical-spacing (space-systems space-to-fill current-lines ragged paper #f))
(satisfied-constraints (car vertical-spacing))
(force (if satisfied-constraints
- (if (and last ragged-last)
+ (if (and is-bookpart-last-page ragged-last)
0.0
satisfied-constraints)
10000))
(list
"\nuser pen " user-penalty
"\nsatisfied-constraints" satisfied-constraints
- "\nlast? " last "ragged?" ragged
+ "\nlast? " is-bookpart-last-page "ragged?" ragged
"\nis-better " is-better " total-penalty " total-penalty "\n"
"\nconfig " positions
"\nforce " force
satisfied-constraints)
(walk-paths (cdr done-lines) (cdr best-paths)
(cons (car done-lines) current-lines)
- last new-best
+ is-last-bookpart is-bookpart-last-page new-best
paper-book page-alist)
new-best)))
-(define (walk-lines done best-paths todo paper-book page-alist)
+(define (walk-lines done best-paths todo paper-book page-alist is-last-bookpart)
"Return the best page breaking as a single
page node for optimally breaking TODO ++
DONE.reversed. BEST-PATHS is a list of break nodes corresponding to
(if (null? todo)
(car best-paths)
(let* ((this-line (car todo))
- (last (null? (cdr todo)))
- (next (walk-paths done best-paths (list this-line) last #f
- paper-book page-alist)))
+ (is-bookpart-last-page (null? (cdr todo)))
+ (next (walk-paths done best-paths (list this-line) is-last-bookpart
+ is-bookpart-last-page #f paper-book page-alist)))
(walk-lines (cons this-line done)
(cons next best-paths)
(cdr todo)
paper-book
- page-alist))))
+ page-alist
+ is-last-bookpart))))
(define-public (optimal-page-breaks paper-book)
"Return pages as a list starting with 1st page. Each page is a 'page Prob."
(lines (ly:paper-book-systems paper-book))
(page-alist (layout->page-init paper))
(force-equalization-factor (ly:output-def-lookup
- paper 'verticalequalizationfactor 0.3)))
+ paper 'verticalequalizationfactor 0.3))
+ (is-last-bookpart (ly:output-def-lookup paper 'is-last-bookpart)))
(ly:message (_ "Calculating page breaks..."))
- (let* ((best-break-node (walk-lines '() '() lines paper-book page-alist))
+ (let* ((best-break-node (walk-lines '() '() lines paper-book page-alist is-last-bookpart))
(break-nodes (get-path best-break-node '())))
- (page-set-property! (car (last-pair break-nodes)) 'is-last #t)
(if #f; (ly:get-option 'verbose)
(begin
(display (list
projects / lilypond.git / blobdiff