lily/minimal-page-breaking.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2007--2011 Nicolas Sceaux <nicolas.sceaux@free.fr>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "international.hh"
  21 #include "minimal-page-breaking.hh"
  22 #include "output-def.hh"
  23 #include "page-spacing.hh"
  24 #include "paper-book.hh"
  25
  26 Minimal_page_breaking::Minimal_page_breaking (Paper_book *pb)
  27   : Page_breaking (pb, 0, 0)
  28 {
  29 }
  30
  31 Minimal_page_breaking::~Minimal_page_breaking ()
  32 {
  33 }
  34
  35 SCM
  36 Minimal_page_breaking::solve ()
  37 {
  38   vsize end = last_break_position ();
  39
  40   message (_ ("Calculating line breaks..."));
  41   set_to_ideal_line_configuration (0, end);
  42   break_into_pieces (0, end, current_configuration (0));
  43
  44   message (_ ("Calculating page breaks..."));
  45   vsize first_page_num = robust_scm2int (book_->paper_->c_variable ("first-page-number"), 1);
  46   Page_spacing_result res = pack_systems_on_least_pages (0, first_page_num);
  47   SCM lines = systems ();
  48   return make_pages (res.systems_per_page_, lines);
  49 }