/*
- head-grav.cc -- part of GNU LilyPond
+ completion-note-heads-engraver.cc -- Completion_heads_engraver
- (c) 1997--2001 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 "output-def.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"
+#include "global-context.hh"
+
+/*
+TODO: make matching rest engraver.
+*/
+
+/*
+
+ How does this work?
+
+ When we catch the note, we predict the end of the note. We keep the
+ events living until we reach the predicted end-time.
+
+ 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.
+
+ We copy the reqs into scratch note reqs, to make sure that we get
+ all durations exactly right.
+*/
-/**
- make balls and rests
- */
class Completion_heads_engraver : public Engraver
{
- Link_array<Item> note_p_arr_;
+ Link_array<Item> notes_;
+ Link_array<Item> prev_notes_;
+ Link_array<Grob> ties_;
- Link_array<Item> dot_p_arr_;
- Link_array<Music> note_req_l_arr_;
+ Link_array<Item> dots_;
+ Link_array<Music> note_reqs_;
Link_array<Music> scratch_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);
public:
- TRANSLATOR_DECLARATIONS(Completion_heads_engraver);
+ TRANSLATOR_DECLARATIONS (Completion_heads_engraver);
protected:
virtual void initialize ();
virtual void start_translation_timestep ();
- virtual bool try_music (Music *req_l) ;
+ virtual bool try_music (Music *req) ;
virtual void process_music ();
virtual void stop_translation_timestep ();
};
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_req_l_arr_.push (n);
+ note_reqs_.push (m);
first_b_ = true;
- Moment musiclen = m->length_mom ();
- Moment now = now_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 now_mom () < note_end_mom_;
+ return note_reqs_.size ();
}
+
return false;
}
+/*
+ The duration _until_ the next barline.
+ */
Moment
Completion_heads_engraver::next_barline_moment ( )
{
{
int log_limit= 6;
- Duration d(0,0);
+ Duration d (0,0);
/*
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;
}
else
{
- orig = unsmob_duration (note_req_l_arr_[0]->get_mus_property ("duration"));
+ orig = unsmob_duration (note_reqs_[0]->get_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 ();
- top_engraver ()->add_moment_to_process (next);
+ 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 (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_req_l_arr_.size (); i++)
+ for (int i = 0; i < note_reqs_.size (); i++)
{
- Music * m = note_req_l_arr_[i]->clone ();
+ Music * m = note_reqs_[i]->clone ();
scratch_note_reqs_.push (m);
}
-
- for (int i =0; i < scratch_note_reqs_.size (); i++)
- scratch_note_reqs_[i]->set_mus_property ("duration", note_dur.smobbed_copy ());
}
for (int i = 0;
- left_to_do_ && i < note_req_l_arr_.size (); i++)
+ left_to_do_ && i < note_reqs_.size (); i++)
{
- Item *note_p = new Item (get_property ("NoteHead"));
-
- Staff_symbol_referencer::set_interface (note_p);
- Music * req = note_req_l_arr_[i];
- if (scratch_note_reqs_.size())
+ Music * req = note_reqs_[i];
+ Item *note = make_item ("NoteHead", req->self_scm ());
+ if (scratch_note_reqs_.size ())
{
req = scratch_note_reqs_[i];
- req->set_mus_property ("pitch",
- note_req_l_arr_[i]->get_mus_property ("pitch"));
+ SCM pits = note_reqs_[i]->get_property ("pitch");
+ req->set_property ("pitch",pits);
}
- note_p->set_grob_property ("duration-log",
- gh_int2scm (note_dur.duration_log ()));
-
+
+ req->set_property ("duration", note_dur.smobbed_copy ());
+ note->set_property ("duration-log",
+ scm_int2num (note_dur.duration_log ()));
+
int dots= note_dur.dot_count ();
if (dots)
{
- Item * d = new Item (get_property ("Dots"));
- Rhythmic_head::set_dots (note_p, d);
+ 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 != gh_scm2int (d->get_grob_property ("dot-count")))
- d->set_grob_property ("dot-count", gh_int2scm (dots));
+ if (dots != ly_scm2int (d->get_property ("dot-count")))
+ d->set_property ("dot-count", scm_int2num (dots));
- d->set_parent (note_p, Y_AXIS);
- announce_grob (d,0);
- dot_p_arr_.push (d);
+ d->set_parent (note, Y_AXIS);
+ dots_.push (d);
}
- Pitch *pit =unsmob_pitch (req->get_mus_property ("pitch"));
+ Pitch *pit =unsmob_pitch (req->get_property ("pitch"));
int pos = pit->steps ();
- SCM c0 = get_property ("centralCPosition");
- if (gh_number_p (c0))
- pos += gh_scm2int (c0);
+ SCM c0 = get_property ("middleCPosition");
+ if (ly_c_number_p (c0))
+ pos += ly_scm2int (c0);
- note_p->set_grob_property ("staff-position", gh_int2scm (pos));
- if (to_boolean (get_property ("easyPlay")))
+ note->set_property ("staff-position", scm_int2num (pos));
+ notes_.push (note);
+ }
+
+ if (prev_notes_.size () == notes_.size ())
+ {
+ for (int i= 0; i < notes_.size (); i++)
{
- char s[2] = "a";
- s[0] = (pit->notename_i_ + 2)%7 + 'a';
-
- s[0] = toupper (s[0]);
- note_p->set_grob_property ("note-character", ly_str02scm (s));
+ Grob * p = make_spanner ("Tie", SCM_EOL);
+ 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 (note_p,req);
- note_p_arr_.push (note_p);
}
- left_to_do_ -= note_dur.length_mom ();
-
+ left_to_do_ -= note_dur.get_length ();
/*
don't do complicated arithmetic with grace notes.
*/
if (orig
- && now_mom().grace_part_ )
+ && now_mom ().grace_part_ )
{
left_to_do_ = Rational (0,0);
}
-
}
void
Completion_heads_engraver::stop_translation_timestep ()
{
- for (int i=0; i < note_p_arr_.size (); i++)
- {
- typeset_grob (note_p_arr_[i]);
- }
- note_p_arr_.clear ();
+ ties_.clear ();
- for (int i=0; i < dot_p_arr_.size (); i++)
- {
- typeset_grob (dot_p_arr_[i]);
- }
- dot_p_arr_.clear ();
+ if (notes_.size ())
+ prev_notes_ = notes_;
+ notes_.clear ();
+
+ dots_.clear ();
- for (int i = scratch_note_reqs_.size(); i--;)
+ for (int i = scratch_note_reqs_.size (); i--;)
{
scm_gc_unprotect_object (scratch_note_reqs_[i]->self_scm () );
-
}
- scratch_note_reqs_.clear();
+
+ scratch_note_reqs_.clear ();
}
-Tie_req * tie_req = 0;
-
void
Completion_heads_engraver::start_translation_timestep ()
{
Moment now = now_mom ();
if (note_end_mom_.main_part_ <= now.main_part_)
{
- note_req_l_arr_.clear ();
- }
-
- if (left_to_do_)
- {
- if (!tie_req)
- tie_req = new Tie_req;
-
- bool succ = daddy_trans_l_->try_music (tie_req);
- if (!succ)
- {
- programming_error ("Completion_heads_engraver: no-one to make tie.");
- }
+ note_reqs_.clear ();
+ prev_notes_.clear ();
}
}
-Completion_heads_engraver::Completion_heads_engraver()
+Completion_heads_engraver::Completion_heads_engraver ()
{
}
-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 */ "",
-/* reads */ "easyPlay centralCPosition measurePosition measureLength",
+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 Tie",
+/* accepts */ "busy-playing-event note-event",
+/* acks */ "",
+/* reads */ "middleCPosition measurePosition measureLength",
/* write */ "");
projects / lilypond.git / blobdiff