/*
- page-turn-page-breaking.cc -- implement Page_turn_page_breaking
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2006--2010 Joe Neeman <joeneeman@gmail.com>
- (c) 2006--2007 Joe Neeman <joeneeman@gmail.com>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "page-turn-page-breaking.hh"
#include "system.hh"
#include "warn.hh"
+template<typename T>
static bool
-is_break (Grob *g)
+is_break (T *g)
{
- return scm_is_symbol (g->get_property ("page-turn-permission"));
+ bool turnable = scm_is_symbol (g->get_property ("page-turn-permission"));
+
+ if (turnable &&
+ (!scm_is_symbol (g->get_property ("page-break-permission"))
+ || !scm_is_symbol (g->get_property ("line-break-permission"))))
+ {
+ programming_error ("found a page-turnable place which was not breakable");
+ turnable = false;
+ }
+
+ return turnable;
}
Page_turn_page_breaking::Page_turn_page_breaking (Paper_book *pb)
- : Page_breaking (pb, is_break)
+ : Page_breaking (pb, is_break<Grob>, is_break<Prob>)
{
}
min_p_count has that evenness. (For example, if PAGE-NUMBER is even and
min_p_count is even, we don't even consider the blank page option). */
- Spacing_result result;
+ Page_spacing_result result;
if (start == 0 && auto_first)
{
if (min_p_count % 2)
- result = space_systems_on_n_or_one_more_pages (configuration, min_p_count, page_number);
+ result = space_systems_on_n_or_one_more_pages (configuration, min_p_count, page_number, 0);
else
result = space_systems_on_n_pages (configuration, min_p_count, page_number);
}
else if (page_number % 2 == min_p_count % 2)
result = space_systems_on_n_pages (configuration, min_p_count, page_number);
else
- result = space_systems_on_n_or_one_more_pages (configuration, min_p_count, page_number);
+ result = space_systems_on_n_or_one_more_pages (configuration, min_p_count, page_number, blank_page_penalty ());
Break_node ret;
ret.prev_ = start - 1;
return ret;
}
-/* "final page" meaning the number of the final right-hand page,
- which always has an odd page number */
+/* The number of pages taken up by a Break_node, including
+ the blank page if there is one */
vsize
-Page_turn_page_breaking::final_page_num (Break_node const &b)
+Page_turn_page_breaking::total_page_count (Break_node const &b)
{
vsize end = b.first_page_number_ + b.page_count_;
- return end - 1 + (end % 2);
+ return end - 1 + (end % 2) - b.first_page_number_;
}
extern bool debug_page_breaking_scoring;
if (isinf (cur.demerits_)
|| (cur.page_count_ + (p_num % 2) > 2
&& (!isinf (this_start_best.demerits_))
- && final_page_num (cur) > final_page_num (this_start_best)))
+ && total_page_count (cur) > total_page_count (this_start_best)))
{
ok_page = false;
break;
if (start == 0 && end == 1
&& this_start_best.first_page_number_ == 1
&& this_start_best.page_count_ > 1)
- warning (_ ("cannot fit the first page turn onto a single page. "
- "Consider setting first-page-number to an even number."));
+ warning (_ ("cannot fit the first page turn onto a single page."
+ " Consider setting first-page-number to an even number."));
if (this_start_best.demerits_ < best.demerits_)
best = this_start_best;
{
state_.clear ();
message (_f ("Calculating page and line breaks (%d possible page breaks)...",
- (int)breaks_.size () - 1) + " ");
- for (vsize i = 0; i + 1 < breaks_.size (); i++)
+ (int) last_break_position ()));
+ for (vsize i = 0; i < last_break_position (); i++)
{
calc_subproblem (i);
progress_indication (string ("[") + to_string (i + 1) + "]");
SCM
Page_turn_page_breaking::make_pages (vector<Break_node> const &soln, SCM systems)
{
+ if (scm_is_null (systems))
+ return SCM_EOL;
+
vector<vsize> lines_per_page;
for (vsize i = 0; i < soln.size (); i++)
{