/*
- completion-note-heads-engraver.cc -- Completion_heads_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Copyright (C) 1997--2011 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 <cctype>
+using namespace std;
-#include "rhythmic-head.hh"
-#include "output-def.hh"
-#include "event.hh"
-#include "dots.hh"
#include "dot-column.hh"
-#include "staff-symbol-referencer.hh"
+#include "dots.hh"
+#include "duration.hh"
+#include "global-context.hh"
#include "item.hh"
+#include "output-def.hh"
+#include "pitch.hh"
+#include "rhythmic-head.hh"
#include "score-engraver.hh"
-#include "warn.hh"
#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
+#include "stream-event.hh"
#include "tie.hh"
-#include "global-context.hh"
+#include "tie-column.hh"
+#include "warn.hh"
-/*
- TODO: make matching rest engraver.
-*/
+#include "translator.icc"
/*
How does this work?
longer than what's specified, than what is left to do and it should
not cross barlines.
- We copy the reqs into scratch note reqs, to make sure that we get
+ We copy the events into scratch note events, to make sure that we get
all durations exactly right.
*/
class Completion_heads_engraver : public Engraver
{
- Link_array<Item> notes_;
- Link_array<Item> prev_notes_;
- Link_array<Grob> ties_;
-
- Link_array<Item> dots_;
- Link_array<Music> note_reqs_;
- Link_array<Music> scratch_note_reqs_;
-
+ vector<Item *> notes_;
+ vector<Item *> prev_notes_;
+ // Must remember notes for explicit ties.
+ vector<Item *> tie_note_candidates_;
+ vector<Stream_event *> tie_note_candidate_events_;
+ vector<Grob *> ties_;
+ vector<Stream_event *> note_events_;
+ Spanner *tie_column_;
Moment note_end_mom_;
bool is_first_;
Rational left_to_do_;
Rational do_nothing_until_;
+ Rational factor_;
Moment next_barline_moment ();
- Duration find_nearest_duration (Rational length);
+ Item *make_note_head (Stream_event *);
public:
TRANSLATOR_DECLARATIONS (Completion_heads_engraver);
protected:
virtual void initialize ();
- virtual void start_translation_timestep ();
- virtual bool try_music (Music *req);
- virtual void process_music ();
- virtual void stop_translation_timestep ();
+ void make_tie (Grob *, Grob *);
+ void start_translation_timestep ();
+ void process_music ();
+ void stop_translation_timestep ();
+ DECLARE_TRANSLATOR_LISTENER (note);
};
void
is_first_ = false;
}
-bool
-Completion_heads_engraver::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Completion_heads_engraver, note);
+void
+Completion_heads_engraver::listen_note (Stream_event *ev)
{
- if (m->is_mus_type ("note-event"))
- {
- note_reqs_.push (m);
-
- is_first_ = true;
- Moment musiclen = m->get_length ();
- Moment now = now_mom ();
+ note_events_.push_back (ev);
- if (now_mom ().grace_part_)
- {
- musiclen.grace_part_ = musiclen.main_part_;
- musiclen.main_part_ = Rational (0, 1);
- }
- note_end_mom_ = note_end_mom_ >? (now + musiclen);
- do_nothing_until_ = Rational (0, 0);
-
- return true;
- }
- else if (m->is_mus_type ("busy-playing-event"))
- {
- return note_reqs_.size () && is_first_;
- }
+ is_first_ = true;
+ Moment now = now_mom ();
+ Moment musiclen = get_event_length (ev, now);
- return false;
+ note_end_mom_ = max (note_end_mom_, (now + musiclen));
+ do_nothing_until_ = Rational (0, 0);
}
/*
- The duration _until_ the next barline.
+ The duration _until_ the next bar line.
*/
Moment
Completion_heads_engraver::next_barline_moment ()
{
Moment *e = unsmob_moment (get_property ("measurePosition"));
Moment *l = unsmob_moment (get_property ("measureLength"));
- if (!e || !l)
+ if (!e || !l || !to_boolean (get_property ("timing")))
{
- programming_error ("No timing props set?");
- return Moment (1, 1);
+ return Moment (0, 0);
}
return (*l - *e);
}
-Duration
-Completion_heads_engraver::find_nearest_duration (Rational length)
+Item *
+Completion_heads_engraver::make_note_head (Stream_event *ev)
{
- int log_limit = 6;
-
- Duration d (0, 0);
-
- /*
- this could surely be done more efficient. Left to the reader as an
- excercise. */
- while (d.get_length () > length && d.duration_log () < log_limit)
- {
- if (d.dot_count ())
- {
- d = Duration (d.duration_log (), d.dot_count ()- 1);
- continue;
- }
- else
- {
- d = Duration (d.duration_log () + 1, 2);
- }
- }
+ Item *note = make_item ("NoteHead", ev->self_scm ());
+ Pitch *pit = unsmob_pitch (ev->get_property ("pitch"));
- if (d.duration_log () >= log_limit)
- {
- // junk the dots.
- d = Duration (d.duration_log (), 0);
+ int pos = pit->steps ();
+ SCM c0 = get_property ("middleCPosition");
+ if (scm_is_number (c0))
+ pos += scm_to_int (c0);
- // scale up.
- d = d.compressed (length / d.get_length ());
- }
+ note->set_property ("staff-position", scm_from_int (pos));
- return d;
+ return note;
}
void
Duration *orig = 0;
if (left_to_do_)
{
- note_dur = find_nearest_duration (left_to_do_);
+ /*
+ note that note_dur may be strictly less than left_to_do_
+ (say, if left_to_do_ == 5/8)
+ */
+ if (factor_.denominator () == 1 && factor_ > Rational (1, 1))
+ note_dur = Duration (left_to_do_, false);
+ else
+ note_dur = Duration (left_to_do_ / factor_, false).compressed (factor_);
}
else
{
- orig = unsmob_duration (note_reqs_[0]->get_property ("duration"));
+ orig = unsmob_duration (note_events_[0]->get_property ("duration"));
note_dur = *orig;
+ factor_ = note_dur.factor ();
+ left_to_do_ = orig->get_length ();
}
Moment nb = next_barline_moment ();
- if (nb < note_dur.get_length ())
+ if (nb.main_part_ && nb < note_dur.get_length ())
{
- note_dur = find_nearest_duration (nb.main_part_);
-
- Moment next = now;
- next.main_part_ += note_dur.get_length ();
-
- get_global_context ()->add_moment_to_process (next);
- do_nothing_until_ = next.main_part_;
+ if (factor_.denominator () == 1 && factor_ > Rational (1, 1))
+ note_dur = Duration (nb.main_part_, false);
+ else
+ note_dur = Duration (nb.main_part_ / factor_, false).compressed (factor_);
}
- if (orig)
- {
- left_to_do_ = orig->get_length ();
- }
+ do_nothing_until_ = now.main_part_ + note_dur.get_length ();
- if (orig && note_dur.get_length () != orig->get_length ())
+ for (vsize i = 0; left_to_do_ && i < note_events_.size (); i++)
{
- if (!scratch_note_reqs_.size ())
- for (int i = 0; i < note_reqs_.size (); i++)
- {
- Music *m = note_reqs_[i]->clone ();
- scratch_note_reqs_.push (m);
- }
+ bool need_clone = !orig || *orig != note_dur;
+ Stream_event *event = note_events_[i];
+
+ if (need_clone)
+ event = event->clone ();
+
+ SCM pits = note_events_[i]->get_property ("pitch");
+ event->set_property ("pitch", pits);
+ event->set_property ("duration", note_dur.smobbed_copy ());
+ event->set_property ("length", Moment (note_dur.get_length ()).smobbed_copy ());
+ event->set_property ("duration-log", scm_from_int (note_dur.duration_log ()));
+
+ /*
+ The Completion_heads_engraver splits an event into a group of consecutive events.
+ For each event in the group, the property "autosplit-end" denotes whether the current event
+ was truncated during splitting. Based on "autosplit-end", the Tie_engraver decides whether a
+ tie event should be processed.
+ */
+ event->set_property ("autosplit-end",
+ ly_bool2scm (left_to_do_ - note_dur.get_length () > Rational (0)));
+
+ Item *note = make_note_head (event);
+ if (need_clone)
+ event->unprotect ();
+ notes_.push_back (note);
}
- for (int i = 0;
- left_to_do_ && i < note_reqs_.size (); i++)
+ if (prev_notes_.size () == notes_.size ())
{
- Music *req = note_reqs_[i];
- if (scratch_note_reqs_.size ())
- {
- req = scratch_note_reqs_[i];
- SCM pits = note_reqs_[i]->get_property ("pitch");
- req->set_property ("pitch", pits);
- }
-
- req->set_property ("duration", note_dur.smobbed_copy ());
-
- Item *note = make_item ("NoteHead", req->self_scm ());
- note->set_property ("duration-log",
- scm_int2num (note_dur.duration_log ()));
-
- int dots = note_dur.dot_count ();
- if (dots)
- {
- Item *d = make_item ("Dots", SCM_EOL);
- Rhythmic_head::set_dots (note, d);
-
- /*
- measly attempt to save an eeny-weenie bit of memory.
- */
- if (dots != scm_to_int (d->get_property ("dot-count")))
- d->set_property ("dot-count", scm_int2num (dots));
-
- d->set_parent (note, Y_AXIS);
- dots_.push (d);
- }
-
- Pitch *pit = unsmob_pitch (req->get_property ("pitch"));
-
- int pos = pit->steps ();
- SCM c0 = get_property ("middleCPosition");
- if (scm_is_number (c0))
- pos += scm_to_int (c0);
-
- note->set_property ("staff-position", scm_int2num (pos));
- notes_.push (note);
+ for (vsize i = 0; i < notes_.size (); i++)
+ make_tie (prev_notes_[i], notes_[i]);
}
- if (prev_notes_.size () == notes_.size ())
- {
- for (int i = 0; i < notes_.size (); i++)
- {
- Grob *p = make_spanner ("Tie", SCM_EOL);
- Tie::set_interface (p); // cannot remove yet!
+ if (ties_.size () && !tie_column_)
+ tie_column_ = make_spanner ("TieColumn", ties_[0]->self_scm ());
- Tie::set_head (p, LEFT, prev_notes_[i]);
- Tie::set_head (p, RIGHT, notes_[i]);
-
- ties_.push (p);
- }
- }
+ if (tie_column_)
+ for (vsize i = ties_.size (); i--;)
+ Tie_column::add_tie (tie_column_, ties_[i]);
left_to_do_ -= note_dur.get_length ();
-
+ if (left_to_do_)
+ get_global_context ()->add_moment_to_process (now.main_part_ + note_dur.get_length ());
/*
don't do complicated arithmetic with grace notes.
*/
- if (orig
- && now_mom ().grace_part_)
- {
- left_to_do_ = Rational (0, 0);
- }
+ if (orig && now_mom ().grace_part_)
+ left_to_do_ = Rational (0, 0);
+}
+
+void
+Completion_heads_engraver::make_tie (Grob *left, Grob *right)
+{
+ Grob *p = make_spanner ("Tie", SCM_EOL);
+ Tie::set_head (p, LEFT, left);
+ Tie::set_head (p, RIGHT, right);
+ ties_.push_back (p);
}
void
Completion_heads_engraver::stop_translation_timestep ()
{
ties_.clear ();
+ tie_column_ = 0;
if (notes_.size ())
prev_notes_ = notes_;
notes_.clear ();
-
- dots_.clear ();
-
- for (int i = scratch_note_reqs_.size (); i--;)
- {
- scm_gc_unprotect_object (scratch_note_reqs_[i]->self_scm ());
- }
-
- scratch_note_reqs_.clear ();
}
void
Moment now = now_mom ();
if (note_end_mom_.main_part_ <= now.main_part_)
{
- note_reqs_.clear ();
+ tie_note_candidate_events_ = note_events_;
+ tie_note_candidates_ = prev_notes_;
+
+ note_events_.clear ();
prev_notes_.clear ();
}
+ context ()->set_property ("completionBusy",
+ ly_bool2scm (note_events_.size ()));
}
Completion_heads_engraver::Completion_heads_engraver ()
{
+ tie_column_ = 0;
}
ADD_TRANSLATOR (Completion_heads_engraver,
- /* descr */ "This engraver replaces "
- "@code{Note_heads_engraver}. It plays some trickery to "
- "break long notes and automatically tie them into the next measure.",
- /* creats*/ "NoteHead Dots Tie",
- /* accepts */ "busy-playing-event note-event",
- /* acks */ "",
- /* reads */ "middleCPosition measurePosition measureLength",
- /* write */ "");
+ /* doc */
+ "This engraver replaces @code{Note_heads_engraver}. It plays"
+ " some trickery to break long notes and automatically tie them"
+ " into the next measure.",
+
+ /* create */
+ "NoteHead "
+ "Tie "
+ "TieColumn ",
+
+ /* read */
+ "measureLength "
+ "measurePosition "
+ "middleCPosition "
+ "timing ",
+
+ /* write */
+ "completionBusy "
+ );
projects / lilypond.git / blobdiff