/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 2006--2009 Joe Neeman <joeneeman@gmail.com>
+ Copyright (C) 2006--2010 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
struct Break_position
{
/*
- index in system_spec_index_, if VPOS start of book.
+ index into system_specs_, if this is VPOS, the Break_position represents the
+ start of the book.
*/
vsize system_spec_index_;
- /* if system_spec_index_ is a score, then we start at the score_brk_'th possible
- page-break in the score */
+ /* if system_spec_index_ indexes a score, then we start at the score_brk_'th
+ possible page-break in the score */
vsize score_break_;
- /* if system_spec_index_ is a score, this points to the broken column */
+ /* if system_spec_index_ indexes a score, this points to the broken column */
Grob *col_;
bool score_ender_;
{
public:
typedef bool (*Break_predicate) (Grob *);
+ typedef bool (*Prob_break_predicate) (Prob *);
typedef vector<vsize> Line_division;
/*
*/
virtual SCM solve () = 0;
- Page_breaking (Paper_book *pb, Break_predicate);
+ Page_breaking (Paper_book *pb, Break_predicate, Prob_break_predicate);
virtual ~Page_breaking ();
bool ragged () const;
int max_systems_per_page () const;
int min_systems_per_page () const;
Real page_height (int page_number, bool last) const;
+ Real paper_height () const;
vsize system_count () const;
Real line_count_penalty (int line_count) const;
int line_count_status (int line_count) const;
bool too_few_lines (int line_count) const;
Real min_whitespace_at_top_of_page (Line_details const&) const;
Real min_whitespace_at_bottom_of_page (Line_details const&) const;
+ int orphan_penalty () const;
protected:
Paper_book *book_;
Page_spacing_result space_systems_on_n_pages (vsize configuration_index,
vsize n, vsize first_page_num);
Page_spacing_result space_systems_on_n_or_one_more_pages (vsize configuration_index, vsize n,
- vsize first_page_num);
+ vsize first_page_num,
+ Real penalty_for_fewer_pages);
Page_spacing_result space_systems_on_best_pages (vsize configuration_index,
vsize first_page_num);
Page_spacing_result space_systems_with_fixed_number_per_page (vsize configuration_index,
int max_systems_per_page_;
int min_systems_per_page_;
vsize system_count_;
+ int orphan_penalty_;
vector<Line_division> current_configurations_;
vector<Break_position> current_chunks_;
vsize current_end_breakpoint_;
void cache_line_details (vsize configuration_index);
+ void compute_line_heights ();
void clear_line_details_cache ();
vsize cached_configuration_index_;
vector<Line_details> cached_line_details_;
vector<Line_details> uncompressed_line_details_;
+ Real paper_height_;
+ mutable vector<Real> page_height_cache_;
+ mutable vector<Real> last_page_height_cache_;
+
vector<Break_position> chunk_list (vsize start, vsize end);
Line_division system_count_bounds (vector<Break_position> const &chunks, bool min);
void line_breaker_args (vsize i,
Page_spacing_result space_systems_on_2_pages (vsize configuration_index, vsize first_page_num);
Page_spacing_result finalize_spacing_result (vsize configuration_index, Page_spacing_result);
void create_system_list ();
- void find_chunks_and_breaks (Break_predicate);
+ void find_chunks_and_breaks (Break_predicate, Prob_break_predicate);
SCM make_page (int page_num, bool last) const;
SCM get_page_configuration (SCM systems, int page_num, bool ragged, bool last);
SCM draw_page (SCM systems, SCM config, int page_num, bool last);