source file of the GNU LilyPond music typesetter
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "paper-column-engraver.hh"
#include "system.hh"
-#include "item.hh"
-#include "paper-column.hh"
-#include "staff-spacing.hh"
+#include "international.hh"
+#include "axis-group-interface.hh"
+#include "context.hh"
#include "note-spacing.hh"
+#include "paper-column.hh"
#include "pointer-group-interface.hh"
-#include "context.hh"
-#include "axis-group-interface.hh"
+#include "staff-spacing.hh"
+#include "system.hh"
#include "warn.hh"
#include "translator.icc"
Paper_column_engraver::Paper_column_engraver ()
{
+ last_moment_.main_part_ = Rational (-1,1);
command_column_ = 0;
musical_column_ = 0;
breaks_ = 0;
- break_event_ = 0;
system_ = 0;
first_ = true;
}
if (command_column_)
{
- command_column_->set_property ("breakable", SCM_BOOL_T);
+ command_column_->set_property ("line-break-permission", ly_symbol2scm ("allow"));
+ command_column_->set_property ("page-turn-permission", ly_symbol2scm ("allow"));
system_->set_bound (RIGHT, command_column_);
}
}
*/
Paper_column *p1 = make_paper_column ("NonMusicalPaperColumn");
Paper_column *p2 = make_paper_column ("PaperColumn");
-
- SCM m = now_mom ().smobbed_copy ();
- p1->set_property ("when", m);
- p2->set_property ("when", m);
+ /*
+ The columns are timestamped with now_mom () in
+ stop_translation_timestep. Cannot happen now, because the
+ first column is sometimes created before now_mom is initialised.
+ */
set_columns (p1, p2);
}
make_columns ();
system_->set_bound (LEFT, command_column_);
- command_column_->set_property ("breakable", SCM_BOOL_T);
+ command_column_->set_property ("line-break-permission", ly_symbol2scm ("allow"));
}
void
Paper_column_engraver::acknowledge_item (Grob_info gi)
{
- items_.push (gi.item ());
+ items_.push_back (gi.item ());
}
void
ly_symbol2scm ("spacing-wishes"),
gi.grob ());
}
+
void
Paper_column_engraver::acknowledge_note_spacing (Grob_info gi)
{
system_->add_column (musical_column_);
}
+IMPLEMENT_TRANSLATOR_LISTENER (Paper_column_engraver, break);
void
-Paper_column_engraver::forbid_breaks ()
+Paper_column_engraver::listen_break (Stream_event *ev)
{
- if (command_column_ && !first_)
- command_column_->set_property ("breakable", SCM_EOL);
-}
-
-bool
-Paper_column_engraver::try_music (Music *m)
-{
- break_event_ = m;
-
- return true;
+ break_events_.push_back (ev);
}
void
Paper_column_engraver::process_music ()
{
- if (break_event_)
+ for (vsize i = 0; i < break_events_.size (); i++)
{
- SCM pen = command_column_->get_property ("penalty");
- Real total_penalty = scm_is_number (pen) ? scm_to_double (pen) : 0.0;
-
- SCM mpen = break_event_->get_property ("penalty");
- if (scm_is_number (mpen))
- total_penalty += scm_to_double (mpen);
-
- command_column_->set_property ("penalty", scm_from_double (total_penalty));
+ string prefix;
+ SCM name_sym = break_events_[i]->get_property ("class");
+ string name = ly_scm2string (scm_symbol_to_string (name_sym));
+ size_t end = name.rfind ("-event");
+ if (end)
+ prefix = name.substr (0, end);
+ else
+ {
+ programming_error ("Paper_column_engraver doesn't know about this break-event");
+ return;
+ }
- /* ugh. arbitrary, hardcoded */
- if (total_penalty > 10000.0)
- forbid_breaks ();
+ string perm_str = prefix + "-permission";
+ string pen_str = prefix + "-penalty";
- SCM page_pen = command_column_->get_property ("page-penalty");
- Real total_pp = scm_is_number (page_pen) ? scm_to_double (page_pen) : 0.0;
- SCM mpage_pen = break_event_->get_property ("page-penalty");
- if (scm_is_number (mpage_pen))
- total_pp += scm_to_double (mpage_pen);
+ SCM cur_pen = command_column_->get_property (pen_str.c_str ());
+ SCM pen = break_events_[i]->get_property ("break-penalty");
+ SCM perm = break_events_[i]->get_property ("break-permission");
- command_column_->set_property ("page-penalty", scm_from_double (total_pp));
+ if (scm_is_number (pen))
+ {
+ Real new_pen = robust_scm2double (cur_pen, 0.0) + scm_to_double (pen);
+ command_column_->set_property (pen_str.c_str (), scm_from_double (new_pen));
+ command_column_->set_property (perm_str.c_str (), ly_symbol2scm ("allow"));
+ }
+ else
+ command_column_->set_property (perm_str.c_str (), perm);
}
bool start_of_measure = (last_moment_.main_part_ != now_mom ().main_part_
void
Paper_column_engraver::stop_translation_timestep ()
{
- for (int i = 0; i < items_.size (); i++)
+ SCM m = now_mom ().smobbed_copy ();
+ command_column_->set_property ("when", m);
+ musical_column_->set_property ("when", m);
+
+ for (vsize i = 0; i < items_.size (); i++)
{
Item *elem = items_[i];
if (!elem->get_parent (X_AXIS)
|| !unsmob_grob (elem->get_object ("axis-group-parent-X")))
{
- bool br = to_boolean (elem->get_property ("breakable"));
+ bool br = Item::is_non_musical (elem);
Axis_group_interface::add_element (br ? command_column_ : musical_column_, elem);
}
}
items_.clear ();
- if (to_boolean (command_column_->get_property ("breakable")))
+ if (to_boolean (get_property ("forbidBreak")))
+ command_column_->set_property ("line-break-permission", SCM_EOL);
+ else if (Paper_column::is_breakable (command_column_))
{
breaks_++;
+
if (! (breaks_%8))
progress_indication ("[" + to_string (breaks_) + "]");
}
+ context ()->get_score_context ()->unset_property (ly_symbol2scm ("forbidBreak"));
+
first_ = false;
- break_event_ = 0;
+ break_events_.clear ();
+
+
+ SCM mpos = get_property ("measurePosition");
+ SCM barnum = get_property ("internalBarNumber");
+ if (unsmob_moment (mpos)
+ && scm_is_integer (barnum))
+ {
+ SCM where = scm_cons (barnum,
+ mpos);
+
+ command_column_->set_property ("rhythmic-location", where);
+ musical_column_->set_property ("rhythmic-location", where);
+ }
}
void
/* doc */ "Takes care of generating columns."
"\n\n "
"This engraver decides whether a column is breakable. The default is "
- "that a column is always breakable. However, when every Bar_engraver "
- "that does not have a barline at a certain point will call "
- "Score_engraver::forbid_breaks to stop linebreaks. In practice, this "
+ "that a column is always breakable. However, every Bar_engraver "
+ "that does not have a barline at a certain point will set forbidBreaks "
+ "in the score context to stop linebreaks. In practice, this "
"means that you can make a breakpoint by creating a barline (assuming "
"that there are no beams or notes that prevent a breakpoint.) ",
/* create */
"PaperColumn "
"NonMusicalPaperColumn",
-
- /* accept */ "break-event",
- /* read */ "",
+ /* read */
+ "forbidBreak "
+ ,
/* write */
+ "forbidBreak "
"currentCommandColumn "
- "currentMusicalColumn");
+ "currentMusicalColumn "
+ );
projects / lilypond.git / blobdiff