/*
- spacing-engraver.cc -- implement Spacing_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1999--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ 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 "paper-column.hh"
#include "engraver.hh"
-#include "pqueue.hh"
+#include "moment.hh"
#include "note-spacing.hh"
-#include "staff-spacing.hh"
+#include "paper-column.hh"
#include "pointer-group-interface.hh"
+#include "pqueue.hh"
#include "spanner.hh"
+#include "staff-spacing.hh"
+#include "stream-event.hh"
#include "translator.icc"
static int time_compare (Rhythmic_tuple const &, Rhythmic_tuple const &);
};
-/*
- TODO: allow starting & stopping of spacing regions.
-*/
+inline int
+compare (Rhythmic_tuple const &a, Rhythmic_tuple const &b)
+{
+ return Rhythmic_tuple::time_compare (a, b);
+}
+
+int
+Rhythmic_tuple::time_compare (Rhythmic_tuple const &h1,
+ Rhythmic_tuple const &h2)
+{
+ return (h1.end_ - h2.end_).main_part_.sign ();
+}
+
+/****************************************************************/
+
/*
Acknowledge rhythmic elements, for initializing spacing fields in
the columns.
vector<Rhythmic_tuple> stopped_durations_;
Moment now_;
Spanner *spacing_;
+ Stream_event *start_section_;
TRANSLATOR_DECLARATIONS (Spacing_engraver);
protected:
- DECLARE_ACKNOWLEDGER (staff_spacing);
- DECLARE_ACKNOWLEDGER (note_spacing);
- DECLARE_ACKNOWLEDGER (rhythmic_head);
+ void acknowledge_staff_spacing (Grob_info);
+ void acknowledge_note_spacing (Grob_info);
+ void acknowledge_rhythmic_head (Grob_info);
+ void acknowledge_rhythmic_grob (Grob_info);
+ void listen_spacing_section (Stream_event *);
void start_translation_timestep ();
void stop_translation_timestep ();
void process_music ();
+ void add_starter_duration (Grob_info i);
+
virtual void finalize ();
+
+ void start_spanner ();
+ void stop_spanner ();
};
-inline int
-compare (Rhythmic_tuple const &a, Rhythmic_tuple const &b)
+Spacing_engraver::Spacing_engraver (Context *c)
+ : Engraver (c)
{
- return Rhythmic_tuple::time_compare (a, b);
+ spacing_ = 0;
+ start_section_ = 0;
}
-int
-Rhythmic_tuple::time_compare (Rhythmic_tuple const &h1,
- Rhythmic_tuple const &h2)
+void
+Spacing_engraver::listen_spacing_section (Stream_event *ev)
{
- return (h1.end_ - h2.end_).main_part_.sign ();
+ ASSIGN_EVENT_ONCE (start_section_, ev);
}
-Spacing_engraver::Spacing_engraver ()
+void
+Spacing_engraver::process_music ()
{
- spacing_ = 0;
+ if (start_section_ && spacing_)
+ stop_spanner ();
+
+ if (!spacing_)
+ start_spanner ();
}
void
-Spacing_engraver::process_music ()
+Spacing_engraver::start_spanner ()
{
- if (!spacing_)
- {
- spacing_ = make_spanner ("SpacingSpanner", SCM_EOL);
- spacing_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
- }
+ assert (!spacing_);
+
+ spacing_ = make_spanner ("SpacingSpanner", SCM_EOL);
+ spacing_->set_bound (LEFT,
+ unsmob<Grob> (get_property ("currentCommandColumn")));
}
void
Spacing_engraver::finalize ()
+{
+ stop_spanner ();
+}
+
+void
+Spacing_engraver::stop_spanner ()
{
if (spacing_)
{
- Grob *p = unsmob_grob (get_property ("currentCommandColumn"));
+ Grob *p = unsmob<Grob> (get_property ("currentCommandColumn"));
spacing_->set_bound (RIGHT, p);
spacing_ = 0;
Pointer_group_interface::add_grob (spacing_, ly_symbol2scm ("wishes"), i.grob ());
}
+void
+Spacing_engraver::acknowledge_rhythmic_grob (Grob_info i)
+{
+ add_starter_duration (i);
+}
+
void
Spacing_engraver::acknowledge_rhythmic_head (Grob_info i)
+{
+ add_starter_duration (i);
+}
+
+void
+Spacing_engraver::add_starter_duration (Grob_info i)
{
if (i.grob ()->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface"))
|| i.grob ()->internal_has_interface (ly_symbol2scm ("multi-measure-interface")))
*/
if (!now_.grace_part_)
{
- Music *r = i.music_cause ();
- if (r && r->is_mus_type ("rhythmic-event"))
- {
- Moment len = r->get_length ();
- Rhythmic_tuple t (i, now_mom () + len);
- now_durations_.push_back (t);
- }
+ Stream_event *r = i.event_cause ();
+ if (r && r->in_event_class ("rhythmic-event"))
+ {
+ Moment len = get_event_length (r, now_);
+ Rhythmic_tuple t (i, now_mom () + len);
+ now_durations_.push_back (t);
+ }
}
}
Spacing_engraver::stop_translation_timestep ()
{
Paper_column *musical_column
- = dynamic_cast<Paper_column *> (unsmob_grob (get_property ("currentMusicalColumn")));
+ = unsmob<Paper_column> (get_property ("currentMusicalColumn"));
+
+ if (!spacing_)
+ start_spanner ();
+
+ musical_column->set_object ("spacing", spacing_->self_scm ());
+ unsmob<Grob> (get_property ("currentCommandColumn"))
+ ->set_object ("spacing", spacing_->self_scm ());
SCM proportional = get_property ("proportionalNotationDuration");
- if (unsmob_moment (proportional))
+ if (unsmob<Moment> (proportional))
{
musical_column->set_property ("shortest-playing-duration", proportional);
musical_column->set_property ("shortest-starter-duration", proportional);
+ musical_column->set_property ("used", SCM_BOOL_T);
return;
}
shortest_playing.set_infinite (1);
for (vsize i = 0; i < playing_durations_.size (); i++)
{
- Music *mus = playing_durations_[i].info_.music_cause ();
- if (mus)
- {
- Moment m = mus->get_length ();
- shortest_playing = min (shortest_playing, m);
- }
+ Stream_event *ev = playing_durations_[i].info_.event_cause ();
+ if (ev)
+ {
+ Moment m = get_event_length (ev);
+ shortest_playing = min (shortest_playing, m);
+ }
}
Moment starter;
starter.set_infinite (1);
for (vsize i = 0; i < now_durations_.size (); i++)
{
- Moment m = now_durations_[i].info_.music_cause ()->get_length ();
+ Moment m = get_event_length (now_durations_[i].info_.event_cause ());
if (m.to_bool ())
- {
- starter = min (starter, m);
- playing_durations_.insert (now_durations_[i]);
- }
+ {
+ starter = min (starter, m);
+ playing_durations_.insert (now_durations_[i]);
+ }
}
now_durations_.clear ();
void
Spacing_engraver::start_translation_timestep ()
{
+ start_section_ = 0;
+
now_ = now_mom ();
stopped_durations_.clear ();
+
while (playing_durations_.size () && playing_durations_.front ().end_ < now_)
playing_durations_.delmin ();
while (playing_durations_.size () && playing_durations_.front ().end_ == now_)
stopped_durations_.push_back (playing_durations_.get ());
}
-ADD_ACKNOWLEDGER (Spacing_engraver, staff_spacing);
-ADD_ACKNOWLEDGER (Spacing_engraver, note_spacing);
-ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_head);
+
+void
+Spacing_engraver::boot ()
+{
+ ADD_LISTENER (Spacing_engraver, spacing_section);
+ ADD_ACKNOWLEDGER (Spacing_engraver, staff_spacing);
+ ADD_ACKNOWLEDGER (Spacing_engraver, note_spacing);
+ ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_head);
+ ADD_ACKNOWLEDGER (Spacing_engraver, rhythmic_grob);
+}
ADD_TRANSLATOR (Spacing_engraver,
- "make a SpacingSpanner and do "
- "bookkeeping of shortest starting and playing notes ",
-
- /* create */ "SpacingSpanner",
- /* accept */ "",
- /* read */
- "currentMusicalColumn "
- "currentCommandColumn "
- "proportionalNotationDuration",
-
- /* write */ "");
+ /* doc */
+ "Make a @code{SpacingSpanner} and do bookkeeping of shortest"
+ " starting and playing notes.",
+
+ /* create */
+ "SpacingSpanner ",
+
+ /* read */
+ "currentMusicalColumn "
+ "currentCommandColumn "
+ "proportionalNotationDuration ",
+
+ /* write */
+ ""
+ );