/*
head-grav.cc -- part of GNU LilyPond
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include <ctype.h>
#include "rhythmic-head.hh"
#include "paper-def.hh"
-#include "musical-request.hh"
+#include "event.hh"
#include "dots.hh"
#include "dot-column.hh"
#include "staff-symbol-referencer.hh"
#include "item.hh"
#include "score-engraver.hh"
#include "warn.hh"
+#include "spanner.hh"
+#include "tie.hh"
/*
How does this work?
When we catch the note, we predict the end of the note. We keep the
- requests living until we reach the predicted end-time.
+ events living until we reach the predicted end-time.
- Every time process_music() is called and there are note requests, we
+ Every time process_music() is called and there are note events, we
figure out how long the note to typeset should be. It should be no
longer than what's specified, than what is left to do and it should
not cross barlines.
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_;
Moment note_end_mom_;
bool first_b_;
Rational left_to_do_;
-
+ Rational do_nothing_until_;
+
Moment next_barline_moment ();
Duration find_nearest_duration (Rational length);
bool
Completion_heads_engraver::try_music (Music *m)
{
- if (Note_req * n =dynamic_cast <Note_req *> (m))
+ if (m->is_mus_type ("note-event"))
{
- note_reqs_.push (n);
+ note_reqs_.push (m);
first_b_ = true;
- Moment musiclen = m->length_mom ();
+ Moment musiclen = m->get_length ();
Moment now = now_mom();
if (now_mom ().grace_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 (dynamic_cast<Busy_playing_req*> (m))
+ else if (m->is_mus_type ("busy-playing-event"))
{
return note_reqs_.size ();
}
}
+/*
+ The duration _until_ the next barline.
+ */
Moment
Completion_heads_engraver::next_barline_moment ( )
{
/*
this could surely be done more efficient. Left to the reader as an
excercise. */
- while (d.length_mom () > length && d.duration_log () < log_limit)
+ while (d.get_length () > length && d.duration_log () < log_limit)
{
if (d.dot_count ())
{
d = Duration (d.duration_log (), 0);
// scale up.
- d = d.compressed (length / d.length_mom ());
+ d = d.compressed (length / d.get_length ());
}
return d;
{
if (!first_b_ && !left_to_do_)
return ;
-
+
first_b_ = false;
+
+ Moment now = now_mom ();
+ if (do_nothing_until_ > now.main_part_)
+ return ;
Duration note_dur;
Duration *orig = 0;
orig = unsmob_duration (note_reqs_[0]->get_mus_property ("duration"));
note_dur = *orig;
}
-
Moment nb = next_barline_moment ();
- if (nb < note_dur.length_mom ())
+ if (nb < note_dur.get_length ())
{
note_dur = find_nearest_duration (nb.main_part_);
- Moment next = now_mom();
- next.main_part_ += note_dur.length_mom ();
+ Moment next = now;
+ next.main_part_ += note_dur.get_length ();
top_engraver ()->add_moment_to_process (next);
+ do_nothing_until_ = next.main_part_;
}
if (orig)
{
- left_to_do_ = orig->length_mom ();
+ left_to_do_ = orig->get_length ();
}
- if (orig && note_dur.length_mom() != orig->length_mom())
+ if (orig && note_dur.get_length () != orig->get_length ())
{
if (!scratch_note_reqs_.size ())
for (int i = 0; i < note_reqs_.size (); i++)
for (int i = 0;
left_to_do_ && i < note_reqs_.size (); i++)
{
- Item *note = new Item (get_property ("NoteHead"));
+ Item *note = make_item ("NoteHead");
Music * req = note_reqs_[i];
if (scratch_note_reqs_.size())
int dots= note_dur.dot_count ();
if (dots)
{
- Item * d = new Item (get_property ("Dots"));
+ Item * d = make_item ("Dots");
Rhythmic_head::set_dots (note, d);
/*
announce_grob (note,req->self_scm ());
notes_.push (note);
}
+
+ if (prev_notes_.size() == notes_.size ())
+ {
+ for (int i= 0; i < notes_.size(); i++)
+ {
+ Grob * p = make_spanner ("Tie");
+ Tie::set_interface (p); // cannot remove yet!
+
+ Tie::set_head (p, LEFT, prev_notes_[i]);
+ Tie::set_head (p, RIGHT, notes_[i]);
+
+ ties_.push (p);
+ announce_grob(p, SCM_EOL);
+ }
+ }
- left_to_do_ -= note_dur.length_mom ();
-
+ left_to_do_ -= note_dur.get_length ();
/*
don't do complicated arithmetic with grace notes.
{
left_to_do_ = Rational (0,0);
}
-
}
void
Completion_heads_engraver::stop_translation_timestep ()
{
+ for (int i = ties_.size (); i--;)
+ typeset_grob (ties_[i]);
+ ties_.clear();
+
for (int i=0; i < notes_.size (); i++)
{
typeset_grob (notes_[i]);
}
+ if (notes_.size())
+ prev_notes_ = notes_;
notes_.clear ();
for (int i=0; i < dots_.size (); i++)
scm_gc_unprotect_object (scratch_note_reqs_[i]->self_scm () );
}
+
scratch_note_reqs_.clear();
}
-Tie_req * tie_req = 0;
-
void
Completion_heads_engraver::start_translation_timestep ()
{
if (note_end_mom_.main_part_ <= now.main_part_)
{
note_reqs_.clear ();
- }
-
- if (left_to_do_)
- {
- if (!tie_req)
- tie_req = new Tie_req;
-
- bool succ = daddy_trans_->try_music (tie_req);
- if (!succ)
- {
- programming_error ("Completion_heads_engraver: no-one to make tie.");
- }
+ prev_notes_.clear ();
}
}
}
ENTER_DESCRIPTION(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",
-/* acks */ "",
+/* 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 */ "centralCPosition measurePosition measureLength",
/* write */ "");
projects / lilypond.git / blobdiff