/*
- slur-engraver.cc -- implement Slur_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--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.
-#include "engraver.hh"
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
#include "context.hh"
#include "directional-element-interface.hh"
#include "international.hh"
#include "note-column.hh"
+#include "pointer-group-interface.hh"
+#include "slur-engraver.hh"
#include "slur.hh"
#include "spanner.hh"
#include "warn.hh"
-/*
- It is possible that a slur starts and ends on the same note. At
- least, it is for phrasing slurs: a note can be both beginning and
- ending of a phrase.
-*/
-class Slur_engraver : public Engraver
-{
- Drul_array<Music *> events_;
- Music *running_slur_start_;
- vector<Grob*> slurs_;
- vector<Grob*> end_slurs_;
-
- void set_melisma (bool);
+#include "translator.icc"
-protected:
- virtual bool try_music (Music *);
+SCM
+Slur_engraver::event_symbol () const
+{
+ return ly_symbol2scm ("slur-event");
+}
- DECLARE_ACKNOWLEDGER (accidental);
- DECLARE_ACKNOWLEDGER (dynamic_line_spanner);
- DECLARE_ACKNOWLEDGER (fingering);
- DECLARE_ACKNOWLEDGER (note_column);
- DECLARE_ACKNOWLEDGER (script);
- DECLARE_ACKNOWLEDGER (text_script);
- DECLARE_ACKNOWLEDGER (tie);
- DECLARE_ACKNOWLEDGER (tuplet_number);
- void acknowledge_extra_object (Grob_info);
- void stop_translation_timestep ();
- virtual void finalize ();
- void process_music ();
+bool
+Slur_engraver::double_property () const
+{
+ return to_boolean (get_property ("doubleSlurs"));
+}
-public:
- TRANSLATOR_DECLARATIONS (Slur_engraver);
-};
+SCM
+Slur_engraver::grob_symbol () const
+{
+ return ly_symbol2scm ("Slur");
+}
-Slur_engraver::Slur_engraver ()
+const char *
+Slur_engraver::object_name () const
{
- events_[START] = events_[STOP] = 0;
+ return "slur";
}
-bool
-Slur_engraver::try_music (Music *m)
+Slur_engraver::Slur_engraver (Context *c)
+ : Engraver (c)
{
- if (m->is_mus_type ("slur-event"))
- {
- Direction d = to_dir (m->get_property ("span-direction"));
- if (d == START)
- {
- events_[START] = m;
- return true;
- }
- else if (d == STOP)
- {
- events_[STOP] = m;
- return true;
- }
- }
- return false;
}
void
Slur_engraver::set_melisma (bool m)
{
- context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
+ context ()->set_property ("slurMelismaBusy", ly_bool2scm (m));
}
void
-Slur_engraver::acknowledge_note_column (Grob_info info)
+Slur_engraver::boot ()
{
- Grob *e = info.grob ();
- for (vsize i = slurs_.size (); i--;)
- Slur::add_column (slurs_[i], e);
- for (vsize i = end_slurs_.size (); i--;)
- Slur::add_column (end_slurs_[i], e);
+ ADD_LISTENER (Slur_engraver, slur);
+ ADD_LISTENER (Slur_engraver, note);
+ ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, inline_accidental);
+ ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, fingering);
+ ADD_ACKNOWLEDGER (Slur_engraver, note_column);
+ ADD_ACKNOWLEDGER (Slur_engraver, script);
+ ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, text_script);
+ ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, dots);
+ ADD_END_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, tie);
+ ADD_ACKNOWLEDGER_FOR (Slur_engraver, extra_object, tuplet_number);
}
+ADD_TRANSLATOR (Slur_engraver,
+ /* doc */
+ "Build slur grobs from slur events.",
+
+ /* create */
+ "Slur ",
+
+ /* read */
+ "slurMelismaBusy "
+ "doubleSlurs ",
+
+ /* write */
+ ""
+ );
+
void
-Slur_engraver::acknowledge_extra_object (Grob_info info)
+Slur_engraver::derived_mark () const
{
- Slur::auxiliary_acknowledge_extra_object (info, slurs_, end_slurs_);
+ for (vsize i = start_events_.size (); i--;)
+ {
+ scm_gc_mark (start_events_[i].slur_->self_scm ());
+ if (start_events_[i].note_)
+ scm_gc_mark (start_events_[i].note_->self_scm ());
+ }
+ for (vsize i = stop_events_.size (); i--;)
+ {
+ scm_gc_mark (stop_events_[i].slur_->self_scm ());
+ if (stop_events_[i].note_)
+ scm_gc_mark (stop_events_[i].note_->self_scm ());
+ }
}
void
-Slur_engraver::acknowledge_accidental (Grob_info info)
+Slur_engraver::listen_note_slur (Stream_event *ev, Stream_event *note)
{
- acknowledge_extra_object (info);
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ if (d == START)
+ start_events_.push_back (Event_info (ev, note));
+ else if (d == STOP)
+ stop_events_.push_back (Event_info (ev, note));
+ else ev->origin ()->warning (_f ("direction of %s invalid: %d",
+ ev->name ().c_str (),
+ int (d)));
}
void
-Slur_engraver::acknowledge_dynamic_line_spanner (Grob_info info)
+Slur_engraver::listen_note (Stream_event *ev)
{
- acknowledge_extra_object (info);
+ for (SCM arts = ev->get_property ("articulations");
+ scm_is_pair (arts); arts = scm_cdr (arts))
+ {
+ Stream_event *art = unsmob<Stream_event> (scm_car (arts));
+ if (art->in_event_class (event_symbol ()))
+ listen_note_slur (art, ev);
+ }
}
void
-Slur_engraver::acknowledge_fingering (Grob_info info)
+Slur_engraver::acknowledge_note_column (Grob_info info)
{
- acknowledge_extra_object (info);
+ Grob *e = info.grob ();
+ for (vsize i = slurs_.size (); i--;)
+ Slur::add_column (slurs_[i], e);
+ for (vsize i = end_slurs_.size (); i--;)
+ Slur::add_column (end_slurs_[i], e);
+ // Now cater for slurs starting/ending at a notehead: those override
+ // the column bounds
+ if (note_slurs_[START].empty () && note_slurs_[STOP].empty ())
+ return;
+ extract_grob_set (e, "note-heads", heads);
+ for (vsize i = heads.size (); i--;)
+ {
+ if (Stream_event *ev =
+ unsmob<Stream_event> (heads[i]->get_property ("cause")))
+ for (LEFT_and_RIGHT (d))
+ {
+ std::pair<Note_slurs::const_iterator, Note_slurs::const_iterator> its
+ = note_slurs_[d].equal_range (ev);
+ for (Note_slurs::const_iterator it = its.first;
+ it != its.second;
+ ++it)
+ it->second->set_bound (d, heads[i]);
+ }
+ }
}
void
-Slur_engraver::acknowledge_tuplet_number (Grob_info info)
+Slur_engraver::acknowledge_extra_object (Grob_info info)
{
- acknowledge_extra_object (info);
+ objects_to_acknowledge_.push_back (info);
}
-
void
Slur_engraver::acknowledge_script (Grob_info info)
{
}
void
-Slur_engraver::acknowledge_text_script (Grob_info info)
+Slur_engraver::finalize ()
{
- acknowledge_extra_object (info);
+ for (vsize i = 0; i < slurs_.size (); i++)
+ {
+ slurs_[i]->warning (_f ("unterminated %s", object_name ()));
+ slurs_[i]->suicide ();
+ }
+ slurs_.clear ();
}
void
-Slur_engraver::acknowledge_tie (Grob_info info)
+Slur_engraver::create_slur (SCM spanner_id, Event_info evi, Grob *g_cause, Direction dir, bool left_broken)
{
- acknowledge_extra_object (info);
+ Grob *ccc = left_broken
+ ? unsmob<Grob> (get_property ("currentCommandColumn"))
+ : 0; // efficiency
+ SCM cause = evi.slur_ ? evi.slur_->self_scm () : g_cause->self_scm ();
+ Spanner *slur = make_spanner (grob_symbol (), cause);
+ slur->set_property ("spanner-id", spanner_id);
+ if (dir)
+ set_grob_direction (slur, dir);
+ if (left_broken)
+ slur->set_bound (LEFT, ccc);
+ slurs_.push_back (slur);
+ if (evi.note_)
+ note_slurs_[START].insert (Note_slurs::value_type (evi.note_, slur));
+
+ if (double_property ())
+ {
+ set_grob_direction (slur, DOWN);
+ slur = make_spanner (grob_symbol (), cause);
+ slur->set_property ("spanner-id", spanner_id);
+ set_grob_direction (slur, UP);
+ if (left_broken)
+ slur->set_bound (LEFT, ccc);
+ slurs_.push_back (slur);
+ if (evi.note_)
+ note_slurs_[START].insert(Note_slurs::value_type (evi.note_, slur));
+ }
+
}
-void
-Slur_engraver::finalize ()
+bool
+Slur_engraver::can_create_slur (SCM id, vsize old_slurs, vsize *event_idx, Stream_event *ev)
+{
+ for (vsize j = slurs_.size (); j--;)
+ {
+ Grob *slur = slurs_[j];
+ Direction updown = to_dir (ev->get_property ("direction"));
+
+ // Check if we already have a slur with the same spanner-id.
+ if (ly_is_equal (id, slur->get_property ("spanner-id")))
+ {
+ if (j < old_slurs)
+ {
+ // We already have an old slur, so give a warning
+ // and completely ignore the new slur.
+ ev->origin ()->warning (_f ("already have %s", object_name ()));
+ if (event_idx)
+ start_events_.erase (start_events_.begin () + (*event_idx));
+ return false;
+ }
+
+ // If this slur event has no direction, it will not
+ // contribute anything new to the existing slur(s), so
+ // we can ignore it.
+
+ if (!updown)
+ return false;
+
+ Stream_event *c = unsmob<Stream_event> (slur->get_property ("cause"));
+
+ if (!c)
+ {
+ slur->programming_error (_f ("%s without a cause", object_name ()));
+ return true;
+ }
+
+ Direction slur_dir = to_dir (c->get_property ("direction"));
+
+ // If the existing slur does not have a direction yet,
+ // we'd rather take the new one.
+
+ if (!slur_dir)
+ {
+ slur->suicide ();
+ slurs_.erase (slurs_.begin () + j);
+ return true;
+ }
+
+ // If the existing slur has the same direction as ours, drop ours
+
+ if (slur_dir == updown)
+ return false;
+ }
+ }
+ return true;
+}
+
+bool
+Slur_engraver::try_to_end (Event_info evi)
{
- if (slurs_.size ())
- slurs_[0]->warning (_ ("unterminated slur"));
+ SCM id = evi.slur_->get_property ("spanner-id");
+
+ // Find the slurs that are ended with this event (by checking the spanner-id)
+ bool ended = false;
+ for (vsize j = slurs_.size (); j--;)
+ {
+ if (ly_is_equal (id, slurs_[j]->get_property ("spanner-id")))
+ {
+ ended = true;
+ end_slurs_.push_back (slurs_[j]);
+ if (evi.note_)
+ note_slurs_[STOP].insert
+ (Note_slurs::value_type
+ (evi.note_, dynamic_cast <Spanner *> (slurs_[j])));
+ slurs_.erase (slurs_.begin () + j);
+ }
+ }
+ return ended;
}
void
Slur_engraver::process_music ()
{
- if (events_[STOP])
+ for (vsize i = 0; i < stop_events_.size (); i++)
{
- if (slurs_.size () == 0)
- events_[STOP]->origin ()->warning (_ ("can't end slur"));
-
-
- end_slurs_ = slurs_;
- slurs_.clear ();
+ SCM id = stop_events_[i].slur_->get_property ("spanner-id");
+ bool ended = try_to_end (stop_events_[i]);
+ if (ended)
+ {
+ // Ignore redundant stop events for this id
+ for (vsize j = stop_events_.size (); --j > i;)
+ {
+ if (ly_is_equal (id, stop_events_[j].slur_->get_property ("spanner-id")))
+ stop_events_.erase (stop_events_.begin () + j);
+ }
+ }
+ else
+ stop_events_[i].slur_->origin ()->warning (_f ("cannot end %s", object_name ()));
}
- if (events_[START] && slurs_.empty ())
+ vsize old_slurs = slurs_.size ();
+ for (vsize i = start_events_.size (); i--;)
{
- Music *ev = events_[START];
-
- bool double_slurs = to_boolean (get_property ("doubleSlurs"));
-
- Grob *slur = make_spanner ("Slur", events_[START]->self_scm ());
+ Stream_event *ev = start_events_[i].slur_;
+ SCM id = ev->get_property ("spanner-id");
Direction updown = to_dir (ev->get_property ("direction"));
- if (updown && !double_slurs)
- set_grob_direction (slur, updown);
-
- slurs_.push_back (slur);
-
- if (double_slurs)
- {
- set_grob_direction (slur, DOWN);
- slur = make_spanner ("Slur", events_[START]->self_scm ());
- set_grob_direction (slur, UP);
- slurs_.push_back (slur);
- }
+
+ if (can_create_slur (id, old_slurs, &i, ev))
+ create_slur (id, start_events_[i], 0, updown, false);
}
+
set_melisma (slurs_.size ());
}
void
Slur_engraver::stop_translation_timestep ()
{
+ if (Grob *g = unsmob<Grob> (get_property ("currentCommandColumn")))
+ {
+ for (vsize i = 0; i < end_slurs_.size (); i++)
+ Slur::add_extra_encompass (end_slurs_[i], g);
+
+ if (!start_events_.size ())
+ for (vsize i = 0; i < slurs_.size (); i++)
+ Slur::add_extra_encompass (slurs_[i], g);
+ }
+
for (vsize i = 0; i < end_slurs_.size (); i++)
- announce_end_grob (end_slurs_[i], SCM_EOL);
- end_slurs_.clear ();
- events_[START] = events_[STOP] = 0;
-}
+ {
+ Spanner *s = dynamic_cast<Spanner *> (end_slurs_[i]);
+ if (!s->get_bound (RIGHT))
+ s->set_bound (RIGHT, unsmob<Grob> (get_property ("currentMusicalColumn")));
+ announce_end_grob (s, SCM_EOL);
+ }
-#include "translator.icc"
+ for (vsize i = 0; i < objects_to_acknowledge_.size (); i++)
+ Slur::auxiliary_acknowledge_extra_object (objects_to_acknowledge_[i], slurs_, end_slurs_);
-ADD_ACKNOWLEDGER (Slur_engraver, accidental);
-ADD_ACKNOWLEDGER (Slur_engraver, dynamic_line_spanner);
-ADD_ACKNOWLEDGER (Slur_engraver, fingering);
-ADD_ACKNOWLEDGER (Slur_engraver, note_column);
-ADD_ACKNOWLEDGER (Slur_engraver, script);
-ADD_ACKNOWLEDGER (Slur_engraver, text_script);
-ADD_ACKNOWLEDGER (Slur_engraver, tie);
-ADD_ACKNOWLEDGER (Slur_engraver, tuplet_number);
-ADD_TRANSLATOR (Slur_engraver,
- /* doc */ "Build slur grobs from slur events",
- /* create */ "Slur",
- /* accept */ "slur-event",
- /* read */ "slurMelismaBusy doubleSlurs",
- /* write */ "");
+ note_slurs_[LEFT].clear ();
+ note_slurs_[RIGHT].clear ();
+ objects_to_acknowledge_.clear ();
+ end_slurs_.clear ();
+ start_events_.clear ();
+ stop_events_.clear ();
+}
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