/*
- tie-engraver.cc -- implement Tie_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1998--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1998--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 "engraver.hh"
#include "context.hh"
-#include "grob-pitch-tuple.hh"
#include "international.hh"
#include "item.hh"
#include "note-head.hh"
#include "translator.icc"
/**
- Manufacture ties. Acknowledge noteheads, and put them into a
+ Manufacture ties. Acknowledge note heads, and put them into a
priority queue. If we have a TieEvent, connect the notes that finish
just at this time, and note that start at this time.
Grob *head_;
Moment end_moment_;
SCM tie_definition_;
- Stream_event *event_;
-
+ Stream_event *tie_stream_event_;
+ Stream_event *tie_event_;
+ // Indicate whether a tie from the same moment has been processed successfully
+ // This is needed for tied chords, e.g. <c e g>~ g, because otherwise the c
+ // and e will trigger a warning for an unterminated tie!
+ bool tie_from_chord_created;
+
Head_event_tuple ()
{
- event_ = 0;
head_ = 0;
tie_definition_ = SCM_EOL;
+ tie_event_ = 0;
+ tie_stream_event_ = 0;
+ tie_from_chord_created = false;
}
};
class Tie_engraver : public Engraver
{
Stream_event *event_;
- vector<Grob*> now_heads_;
+ vector<Grob *> now_heads_;
vector<Head_event_tuple> heads_to_tie_;
- vector<Grob*> ties_;
+ vector<Grob *> ties_;
Spanner *tie_column_;
DECLARE_TRANSLATOR_LISTENER (tie);
void process_music ();
void typeset_tie (Grob *);
+ void report_unterminated_tie (Head_event_tuple const &);
+ bool has_autosplit_end (Stream_event *event);
public:
TRANSLATOR_DECLARATIONS (Tie_engraver);
};
void
Tie_engraver::listen_tie (Stream_event *ev)
{
- event_ = ev;
+ ASSIGN_EVENT_ONCE (event_, ev);
+}
+
+void Tie_engraver::report_unterminated_tie (Head_event_tuple const &tie_start)
+{
+ // If tie_from_chord_created is set, we have another note at the same
+ // moment that created a tie, so this is not necessarily an unterminated
+ // tie. Happens e.g. for <c e g>~ g
+ if (!tie_start.tie_from_chord_created)
+ tie_start.head_->warning (_ ("unterminated tie"));
+}
+
+/*
+ Determines whether the end of an event was created by
+ a split in Completion_heads_engraver or by user input.
+*/
+bool
+Tie_engraver::has_autosplit_end (Stream_event *event)
+{
+ if (event)
+ return to_boolean (event->get_property ("autosplit-end"));
+ return false;
}
void
Tie_engraver::process_music ()
{
- if (event_)
+ bool busy = event_;
+ for (vsize i = 0; !busy && i < heads_to_tie_.size (); i++)
+ busy |= (heads_to_tie_[i].tie_event_
+ || heads_to_tie_[i].tie_stream_event_);
+
+ if (busy)
context ()->set_property ("tieMelismaBusy", SCM_BOOL_T);
}
Tie_engraver::acknowledge_note_head (Grob_info i)
{
Grob *h = i.grob ();
+
now_heads_.push_back (h);
for (vsize i = heads_to_tie_.size (); i--;)
{
Stream_event *left_ev = unsmob_stream_event (th->get_property ("cause"));
/*
- maybe should check positions too.
+ maybe should check positions too.
*/
- if (right_ev && left_ev
- && !to_boolean (left_ev->get_property ("untied"))
- && ly_is_equal (right_ev->get_property ("pitch"),
- left_ev->get_property ("pitch")))
- {
- Grob *p = new Spanner (heads_to_tie_[i].tie_definition_,
- context ()->get_grob_key ("Tie"));
- announce_grob (p, heads_to_tie_[i].event_->self_scm ());
- Tie::set_head (p, LEFT, th);
- Tie::set_head (p, RIGHT, h);
-
- ties_.push_back (p);
- heads_to_tie_.erase (heads_to_tie_.begin () + i);
- }
+ if (!right_ev || !left_ev)
+ continue;
+
+ /*
+ Make a tie only if pitches are equal or if event end was not generated by
+ Completion_heads_engraver.
+ */
+ if (ly_is_equal (right_ev->get_property ("pitch"), left_ev->get_property ("pitch"))
+ && (!Tie_engraver::has_autosplit_end (left_ev)))
+ {
+ Grob *p = new Spanner (heads_to_tie_[i].tie_definition_);
+ Moment end = heads_to_tie_[i].end_moment_;
+
+ SCM cause = heads_to_tie_[i].tie_event_
+ ? heads_to_tie_[i].tie_event_->self_scm ()
+ : heads_to_tie_[i].tie_stream_event_->self_scm ();
+
+ announce_grob (p, cause);
+ Tie::set_head (p, LEFT, th);
+ Tie::set_head (p, RIGHT, h);
+
+ if (is_direction (unsmob_stream_event (cause)->get_property ("direction")))
+ {
+ Direction d = to_dir (unsmob_stream_event (cause)->get_property ("direction"));
+ p->set_property ("direction", scm_from_int (d));
+ }
+
+ ties_.push_back (p);
+ heads_to_tie_.erase (heads_to_tie_.begin () + i);
+
+ /*
+ Prevent all other tied notes ending at the same moment (assume
+ implicitly the notes have also started at the same moment!)
+ from triggering an "unterminated tie" warning. Needed e.g. for
+ <c e g>~ g
+ */
+ for (vsize j = heads_to_tie_.size (); j--;)
+ {
+ if (heads_to_tie_[j].end_moment_ == end)
+ heads_to_tie_[j].tie_from_chord_created = true;
+ }
+ }
}
if (ties_.size () && ! tie_column_)
void
Tie_engraver::start_translation_timestep ()
{
- context ()->set_property ("tieMelismaBusy",
- ly_bool2scm (heads_to_tie_.size ()));
-
-
- if (!to_boolean (get_property ("tieWaitForNote")))
+ if (heads_to_tie_.size () && !to_boolean (get_property ("tieWaitForNote")))
{
Moment now = now_mom ();
- for (vsize i = heads_to_tie_.size (); i--; )
- {
- if (now > heads_to_tie_[i].end_moment_)
- heads_to_tie_.erase (heads_to_tie_.begin () + i);
- }
+ for (vsize i = heads_to_tie_.size (); i--;)
+ {
+ if (now > heads_to_tie_[i].end_moment_)
+ {
+ report_unterminated_tie (heads_to_tie_[i]);
+ heads_to_tie_.erase (heads_to_tie_.begin () + i);
+ }
+ }
}
+
+ context ()->set_property ("tieMelismaBusy",
+ ly_bool2scm (heads_to_tie_.size ()));
}
void
Tie_engraver::stop_translation_timestep ()
{
+ bool wait = to_boolean (get_property ("tieWaitForNote"));
if (ties_.size ())
{
- if (!to_boolean (get_property ("tieWaitForNote")))
- heads_to_tie_.clear ();
+ if (!wait)
+ {
+ vector<Head_event_tuple>::iterator it = heads_to_tie_.begin ();
+ for (; it < heads_to_tie_.end (); it++)
+ report_unterminated_tie (*it);
+ heads_to_tie_.clear ();
+ }
for (vsize i = 0; i < ties_.size (); i++)
- typeset_tie (ties_[i]);
+ typeset_tie (ties_[i]);
ties_.clear ();
tie_column_ = 0;
}
- if (event_)
+ vector<Head_event_tuple> new_heads_to_tie;
+
+ /*
+ Whether tie event has been processed and can be deleted or should
+ be kept for later portions of a split note.
+ */
+ bool event_processed = false;
+
+ for (vsize i = 0; i < now_heads_.size (); i++)
{
- SCM start_definition
- = updated_grob_properties (context (), ly_symbol2scm ("Tie"));
-
- if (!to_boolean (get_property ("tieWaitForNote")))
- heads_to_tie_.clear ();
-
- for (vsize i = 0; i < now_heads_.size (); i++)
- {
- Grob *head = now_heads_[i];
- Stream_event *left_ev = unsmob_stream_event (head->get_property ("cause"));
- if (left_ev)
- {
- Head_event_tuple event_tup;
-
- event_tup.head_ = head;
- event_tup.tie_definition_ = start_definition;
- event_tup.event_ = event_;
-
- Moment end = now_mom ();
- if (end.grace_part_)
- {
- end.grace_part_ += get_event_length (left_ev).main_part_;
- }
- else
- {
- end += get_event_length (left_ev);
- }
- event_tup.end_moment_ = end;
-
- heads_to_tie_.push_back (event_tup);
- }
- }
+ Grob *head = now_heads_[i];
+ Stream_event *left_ev
+ = unsmob_stream_event (head->get_property ("cause"));
+
+ if (!left_ev)
+ {
+ // may happen for ambitus
+ continue;
+ }
+
+ // We only want real notes to cause ties, not e.g. pitched trills
+ if (!left_ev->in_event_class ("note-event"))
+ continue;
+
+ SCM left_articulations = left_ev->get_property ("articulations");
+
+ Stream_event *tie_event = 0;
+ Stream_event *tie_stream_event = event_;
+ for (SCM s = left_articulations;
+ !tie_event && !tie_stream_event && scm_is_pair (s);
+ s = scm_cdr (s))
+ {
+ Stream_event *ev = unsmob_stream_event (scm_car (s));
+ if (!ev)
+ continue;
+
+ if (ev->in_event_class ("tie-event"))
+ tie_event = ev;
+ }
+
+ if (left_ev && (tie_event || tie_stream_event)
+ && (!Tie_engraver::has_autosplit_end (left_ev)))
+ {
+ event_processed = true;
+
+ Head_event_tuple event_tup;
+
+ SCM start_definition
+ = updated_grob_properties (context (), ly_symbol2scm ("Tie"));
+
+ event_tup.head_ = head;
+ event_tup.tie_definition_ = start_definition;
+ event_tup.tie_event_ = tie_event;
+ event_tup.tie_stream_event_ = tie_stream_event;
+
+ Moment end = now_mom ();
+ if (end.grace_part_)
+ {
+ end.grace_part_ += get_event_length (left_ev).main_part_;
+ }
+ else
+ {
+ end += get_event_length (left_ev);
+ }
+ event_tup.end_moment_ = end;
+
+ new_heads_to_tie.push_back (event_tup);
+ }
}
- event_ = 0;
+ if (!wait && new_heads_to_tie.size ())
+ {
+ vector<Head_event_tuple>::iterator it = heads_to_tie_.begin ();
+ for (; it < heads_to_tie_.end (); it++)
+ report_unterminated_tie (*it);
+ heads_to_tie_.clear ();
+ }
+
+ // hmmm, how to do with copy () ?
+ for (vsize i = 0; i < new_heads_to_tie.size (); i++)
+ heads_to_tie_.push_back (new_heads_to_tie[i]);
+
+ /*
+ Discard event only if it has been processed with at least one
+ appropriate note.
+ */
+ if (event_processed)
+ event_ = 0;
+
now_heads_.clear ();
}
if (! (Tie::head (her, LEFT) && Tie::head (her, RIGHT)))
warning (_ ("lonely tie"));
- Direction d = LEFT;
Drul_array<Grob *> new_head_drul;
new_head_drul[LEFT] = Tie::head (her, LEFT);
new_head_drul[RIGHT] = Tie::head (her, RIGHT);
- do
+ for (LEFT_and_RIGHT (d))
{
if (!Tie::head (her, d))
- new_head_drul[d] = Tie::head (her, (Direction) - d);
+ new_head_drul[d] = Tie::head (her, (Direction) - d);
}
- while (flip (&d) != LEFT);
- Spanner *sp = dynamic_cast<Spanner*> (her);
+ Spanner *sp = dynamic_cast<Spanner *> (her);
sp->set_bound (LEFT, new_head_drul[LEFT]);
sp->set_bound (RIGHT, new_head_drul[RIGHT]);
}
ADD_ACKNOWLEDGER (Tie_engraver, note_head);
ADD_TRANSLATOR (Tie_engraver,
- /* doc */ "Generate ties between noteheads of equal pitch.",
- /* create */
- "Tie "
- "TieColumn",
-
- /* accept */ "tie-event",
- /* read */ "tieWaitForNote",
- /* write */ "tieMelismaBusy");
+ /* doc */
+ "Generate ties between note heads of equal pitch.",
+
+ /* create */
+ "Tie "
+ "TieColumn ",
+
+ /* read */
+ "tieWaitForNote ",
+
+ /* write */
+ "tieMelismaBusy "
+ );
projects / lilypond.git / blobdiff