/*
- page-spacing.cc - implement routines for spacing
- systems vertically on pages
+ 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--2009 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-spacing.hh"
void
Page_spacing::append_system (const Line_details &line)
{
- if (!rod_height_)
- first_line_ = line;
-
- rod_height_ += last_line_.padding_;
+ if (rod_height_)
+ {
+ rod_height_ += line.tallness_;
+ }
+ else
+ {
+ rod_height_ += line.full_height ();
+ first_line_ = line;
+ }
- rod_height_ += line.extent_.length ();
spring_len_ += line.space_;
inverse_spring_k_ += line.inverse_hooke_;
void
Page_spacing::prepend_system (const Line_details &line)
{
- if (rod_height_)
- rod_height_ += line.padding_;
- else
+ if (!rod_height_)
last_line_ = line;
- rod_height_ += line.extent_.length ();
+ rod_height_ -= first_line_.full_height ();
+ rod_height_ += first_line_.tallness_;
+ rod_height_ += line.full_height();
spring_len_ += line.space_;
inverse_spring_k_ += line.inverse_hooke_;
penalty += lines_[page_start-1].page_penalty_
+ (page % 2 == 0) ? lines_[page_start-1].turn_penalty_ : 0;
+ /* Deal with widow/orphan lines */
+ /* Last line of paragraph is first line on the new page */
+ if ((page_start > 0) &&
+ (page_start < lines_.size ()) &&
+ (lines_[page_start].last_markup_line_))
+ penalty += breaker_->orphan_penalty ();
+ /* First line of paragraph is last line on the previous page */
+ if ((page_start > 0) &&
+ (page_start < lines_.size ()) &&
+ (lines_[page_start-1].first_markup_line_))
+ penalty += breaker_->orphan_penalty ();
+
demerits += penalty;
if (demerits < cur.demerits_ || page_start == line)
{