#include "prob.hh"
#include "system.hh"
-static bool
-is_break (Grob *g)
-{
- return g->get_property ("page-break-permission") == ly_symbol2scm ("force");
-}
-
Optimal_page_breaking::Optimal_page_breaking (Paper_book *pb)
- : Page_breaking (pb, is_break)
+ : Page_breaking (pb, 0, 0)
{
}
extern bool debug_page_breaking_scoring;
-// Solves the subproblem betwen the (END-1)th \pageBreak and the
-// ENDth \pageBreak.
-// Returns a vector of systems per page for the pages within this chunk.
-vector<vsize>
-Optimal_page_breaking::solve_chunk (vsize end)
+SCM
+Optimal_page_breaking::solve ()
{
- vsize max_sys_count = max_system_count (end-1, end);
+ vsize end = last_break_position ();
+ vsize max_sys_count = max_system_count (0, end);
vsize first_page_num = robust_scm2int (book_->paper_->c_variable ("first-page-number"), 1);
- SCM forced_page_count = book_->paper_->c_variable ("page-count");
- set_to_ideal_line_configuration (end-1, end);
+ set_to_ideal_line_configuration (0, end);
Page_spacing_result best;
+ SCM forced_page_count = book_->paper_->c_variable ("page-count");
vsize page_count = robust_scm2int (forced_page_count, 1);
Line_division ideal_line_division = current_configuration (0);
Line_division best_division = ideal_line_division;
if (!scm_is_integer (forced_page_count))
{
+ /* find out the ideal number of pages */
+ message (_ ("Finding the ideal number of pages..."));
+
if (systems_per_page () > 0)
best = space_systems_with_fixed_number_per_page (0, first_page_num);
else
min_sys_count = page_count;
}
- if (page_count == 1 || scm_is_integer (forced_page_count))
- progress_indication (_f ("[%d: %d pages]", (int) end, (int) page_count));
+ if (page_count == 1)
+ message (_ ("Fitting music on 1 page..."));
+ else if (scm_is_integer (forced_page_count))
+ message (_f ("Fitting music on %d pages...", (int)page_count));
else
- progress_indication (_f ("[%d: %d or %d pages]", (int) end, (int) page_count-1, (int)page_count));
+ message (_f ("Fitting music on %d or %d pages...", (int)page_count-1, (int)page_count));
/* try a smaller number of systems than the ideal number for line breaking */
Line_division bound = ideal_line_division;
for (vsize sys_count = ideal_sys_count; --sys_count >= min_sys_count;)
{
Page_spacing_result best_for_this_sys_count;
- set_current_breakpoints (end-1, end, sys_count, Line_division (), bound);
+ set_current_breakpoints (0, end, sys_count, Line_division (), bound);
if (debug_page_breaking_scoring)
message (_f ("trying %d systems", (int)sys_count));
for (vsize i = 0; i < current_configuration_count (); i++)
{
- vsize min_p_count = min_page_count (i, first_page_num);
Page_spacing_result cur;
- if (min_p_count == page_count || scm_is_integer (forced_page_count))
+ if (scm_is_integer (forced_page_count))
cur = space_systems_on_n_pages (i, page_count, first_page_num);
else
- cur = space_systems_on_n_or_one_more_pages (i, page_count-1, first_page_num, 0);
+ cur = space_systems_on_best_pages (i, first_page_num);
if (cur.demerits_ < best_for_this_sys_count.demerits_)
{
for (vsize sys_count = ideal_sys_count+1; sys_count <= max_sys_count; sys_count++)
{
Real best_demerits_for_this_sys_count = infinity_f;
- set_current_breakpoints (end-1, end, sys_count, bound);
+ set_current_breakpoints (0, end, sys_count, bound);
if (debug_page_breaking_scoring)
message (_f ("trying %d systems", (int)sys_count));
if (min_p_count > page_count)
continue;
- else
+ else if (scm_is_integer (forced_page_count))
cur = space_systems_on_n_pages (i, page_count, first_page_num);
+ else
+ cur = space_systems_on_best_pages (i, first_page_num);
if (cur.demerits_ < best.demerits_)
{
&& !(best.system_count_status_ & SYSTEM_COUNT_TOO_FEW))
break;
}
- break_into_pieces (end-1, end, best_division);
-
- return best.systems_per_page_;
-}
-
-SCM
-Optimal_page_breaking::solve ()
-{
- vector<vsize> systems_per_page;
-
- message (_f ("Solving %d page-breaking chunks...", last_break_position ()));
- for (vsize end = 1; end <= last_break_position (); ++end)
- {
- vector<vsize> chunk_systems = solve_chunk (end);
- systems_per_page.insert (systems_per_page.end (), chunk_systems.begin (), chunk_systems.end ());
- }
message (_ ("Drawing systems..."));
+ break_into_pieces (0, end, best_division);
SCM lines = systems ();
- return make_pages (systems_per_page, lines);
+ return make_pages (best.systems_per_page_, lines);
}