/*
- 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::calc_force ()
{
- /* If the first system contains a title, we add back in the page-top-space. */
- bool starts_with_title = first_line_.compressed_nontitle_lines_count_ < first_line_.compressed_lines_count_;
- Real height = starts_with_title ? page_height_ + page_top_space_ : page_height_;
+ Real height = page_height_
+ - breaker_->min_whitespace_at_top_of_page (first_line_)
+ - breaker_->min_whitespace_at_bottom_of_page (last_line_);
if (rod_height_ + last_line_.bottom_padding_ >= height)
force_ = infinity_f;
if (!rod_height_)
first_line_ = line;
- rod_height_ += last_line_.padding_;
+ rod_height_ += line.title_ ? last_line_.title_padding_ : last_line_.padding_;
rod_height_ += line.extent_.length ();
spring_len_ += line.space_;
Page_spacing::prepend_system (const Line_details &line)
{
if (rod_height_)
- rod_height_ += line.padding_;
+ rod_height_ += first_line_.title_ ? line.title_padding_ : line.padding_;
else
last_line_ = line;
if (extra_systems)
{
ret.systems_per_page_.back () += extra_systems;
- ret.demerits_ += BAD_SPACING_PENALTY;
+ ret.force_.back () = BAD_SPACING_PENALTY;
}
if (extra_pages)
{
ret.force_.insert (ret.force_.end (), extra_pages, BAD_SPACING_PENALTY);
ret.systems_per_page_.insert (ret.systems_per_page_.end (), extra_pages, 0);
- ret.demerits_ += BAD_SPACING_PENALTY;
}
-
- ret.demerits_ += ret.penalty_;
return ret;
}
{
bool last = line == lines_.size () - 1;
Page_spacing space (breaker_->page_height (page + first_page_num_, last),
- breaker_->page_top_space ());
+ breaker_);
Page_spacing_node &cur = state_.at (line, page);
bool ragged = ragged_ || (ragged_last_ && last);
int line_count = 0;
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)
{