lily/minimal-page-breaking.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2007--2010 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 static bool
  27 is_break (Grob *)
  28 {
  29   return false;
  30 }
  31
  32 Minimal_page_breaking::Minimal_page_breaking (Paper_book *pb)
  33   : Page_breaking (pb, is_break)
  34 {
  35 }
  36
  37 Minimal_page_breaking::~Minimal_page_breaking ()
  38 {
  39 }
  40
  41 SCM
  42 Minimal_page_breaking::solve ()
  43 {
  44   vsize end = last_break_position ();
  45
  46   message (_ ("Calculating line breaks..."));
  47   set_to_ideal_line_configuration (0, end);
  48   break_into_pieces (0, end, current_configuration (0));
  49
  50   message (_ ("Calculating page breaks..."));
  51   vsize first_page_num = robust_scm2int (book_->paper_->c_variable ("first-page-number"), 1);
  52   Page_spacing_result res = pack_systems_on_least_pages (0, first_page_num);
  53   SCM lines = systems ();
  54   return make_pages (res.systems_per_page_, lines);
  55 }