source file of the GNU LilyPond music typesetter
- (c) 2006--2007 Joe Neeman <joeneeman@gmail.com>
+ (c) 2006--2008 Joe Neeman <joeneeman@gmail.com>
*/
#ifndef PAGE_BREAKING_HH
struct Break_position
{
- vsize sys_; /* our index in the all_ list */
- vsize score_break_; /* if sys_ is a score, then we start at the score_brk_'th
- possible page-break in the score */
- Grob *col_; /* if sys_ is a score, this points to the broken column */
+ /*
+ index in system_spec_index_, if VPOS start of 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 */
+ vsize score_break_;
+
+ /* if system_spec_index_ is a score, this points to the broken column */
+ Grob *col_;
bool score_ender_;
Break_position (vsize s=VPOS, vsize brk=VPOS, Grob *g=NULL, bool end=false)
{
- sys_ = s;
+ system_spec_index_ = s;
score_break_ = brk;
col_ = g;
score_ender_ = end;
}
+ /*
+ lexicographic in (system_spec_index_, score_break_)
+ */
bool operator< (const Break_position &other)
{
- return (sys_ == VPOS && other.sys_ != VPOS)
- || (sys_ < other.sys_)
- || (sys_ == other.sys_ && score_break_ < other.score_break_);
+ return (system_spec_index_ == VPOS && other.system_spec_index_ != VPOS)
+ || (system_spec_index_ < other.system_spec_index_)
+ || (system_spec_index_ == other.system_spec_index_ && score_break_ < other.score_break_);
}
bool operator<= (const Break_position &other)
{
- return (sys_ == VPOS)
- || (sys_ < other.sys_ && other.sys_ != VPOS)
- || (sys_ == other.sys_ && score_break_ <= other.score_break_);
+ return (system_spec_index_ == VPOS)
+ || (system_spec_index_ < other.system_spec_index_ && other.system_spec_index_ != VPOS)
+ || (system_spec_index_ == other.system_spec_index_ && score_break_ <= other.score_break_);
}
};
public:
typedef bool (*Break_predicate) (Grob *);
typedef vector<vsize> Line_division;
+
+ /*
+ TODO: naming.
+
+ determine the page breaking, and break scores into lines
+ appropriately.
+ */
virtual SCM solve () = 0;
Page_breaking (Paper_book *pb, Break_predicate);
bool ragged () const;
bool ragged_last () const;
- bool last () const;
+ bool is_last () const;
+ bool ends_score () const;
Real page_height (int page_number, bool last) const;
+ Real page_top_space () const;
+ vsize system_count () const;
protected:
Paper_book *book_;
vsize system_count,
Line_division lower_bound = Line_division (),
Line_division upper_bound = Line_division ());
+ void set_to_ideal_line_configuration (vsize start, vsize end);
+
vsize current_configuration_count () const;
Line_division current_configuration (vsize configuration_index) const;
- Spacing_result space_systems_on_n_pages (vsize configuration_index, vsize n, vsize first_page_num);
- Spacing_result space_systems_on_n_or_one_more_pages (vsize configuration_index, vsize n, vsize first_page_num);
- Spacing_result space_systems_on_best_pages (vsize configuration_index, vsize first_page_num);
+ 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);
+ Page_spacing_result space_systems_on_best_pages (vsize configuration_index,
+ vsize first_page_num);
+ Page_spacing_result pack_systems_on_least_pages (vsize configuration_index,
+ vsize first_page_num);
vsize min_page_count (vsize configuration_index, vsize first_page_num);
bool all_lines_stretched (vsize configuration_index);
Real blank_page_penalty () const;
SCM breakpoint_property (vsize breakpoint, char const *str);
- vector<Break_position> breaks_;
+ vsize last_break_position () const;
private:
+ vector<Break_position> breaks_;
vector<Break_position> chunks_;
- vector<System_spec> all_;
+ vector<System_spec> system_specs_;
vector<Constrained_breaking> line_breaking_;
bool ragged_;
bool ragged_last_;
+ Real page_top_space_;
+ vsize system_count_;
vector<Line_division> current_configurations_;
vector<Break_position> current_chunks_;
Line_division *cur);
vector<Line_details> line_details (vsize start, vsize end, Line_division const &div);
- Spacing_result space_systems_on_1_page (vector<Line_details> const &lines, Real page_height, bool ragged);
- Spacing_result space_systems_on_2_pages (vsize configuration_index, vsize first_page_num);
- Spacing_result finalize_spacing_result (vsize configuration_index, Spacing_result);
+ Page_spacing_result space_systems_on_1_page (vector<Line_details> const &lines, Real page_height, bool ragged);
+ 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);
};