/*
- head-grav.cc -- part of GNU LilyPond
+ completion-note-heads-engraver.cc -- Completion_heads_engraver
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <ctype.h>
+#include <cctype>
+using namespace std;
#include "rhythmic-head.hh"
-#include "paper-def.hh"
-#include "event.hh"
+#include "output-def.hh"
+#include "music.hh"
#include "dots.hh"
#include "dot-column.hh"
#include "staff-symbol-referencer.hh"
#include "spanner.hh"
#include "tie.hh"
#include "global-context.hh"
+#include "duration.hh"
+#include "pitch.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
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
+
+ We copy the events into scratch note events, to make sure that we get
all durations exactly right.
*/
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_;
+ Link_array<Music> note_events_;
+ Link_array<Music> scratch_note_events_;
Moment note_end_mom_;
- bool first_b_;
+ bool is_first_;
Rational left_to_do_;
Rational do_nothing_until_;
-
+
Moment next_barline_moment ();
Duration find_nearest_duration (Rational length);
-
+
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 start_translation_timestep ();
+ virtual bool try_music (Music *event);
+ void process_music ();
+ void stop_translation_timestep ();
};
void
Completion_heads_engraver::initialize ()
{
- first_b_ = false;
+ is_first_ = false;
}
bool
-Completion_heads_engraver::try_music (Music *m)
+Completion_heads_engraver::try_music (Music *m)
{
if (m->is_mus_type ("note-event"))
{
- note_reqs_.push (m);
+ note_events_.push (m);
- first_b_ = true;
+ is_first_ = true;
Moment musiclen = m->get_length ();
Moment now = now_mom ();
if (now_mom ().grace_part_)
{
- musiclen.grace_part_ = musiclen.main_part_ ;
- musiclen.main_part_ = Rational (0,1);
+ 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);
-
+ note_end_mom_ = max (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 ();
- }
-
+ else if (m->is_mus_type ("busy-playing-event"))
+ return note_events_.size () && is_first_;
+
return false;
-
}
/*
The duration _until_ the next barline.
- */
+*/
Moment
-Completion_heads_engraver::next_barline_moment ( )
+Completion_heads_engraver::next_barline_moment ()
{
Moment *e = unsmob_moment (get_property ("measurePosition"));
Moment *l = unsmob_moment (get_property ("measureLength"));
if (!e || !l)
{
- programming_error ("No timing props set?");
- return Moment (1,1);
+ programming_error ("no timing props set?");
+ return Moment (1, 1);
}
return (*l - *e);
}
-Duration
+Duration
Completion_heads_engraver::find_nearest_duration (Rational length)
{
- int log_limit= 6;
+ 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
continue;
}
else
- {
- d = Duration (d.duration_log () + 1, 2);
- }
+ d = Duration (d.duration_log () + 1, 2);
}
if (d.duration_log () >= log_limit)
// scale up.
d = d.compressed (length / d.get_length ());
}
-
+
return d;
}
void
Completion_heads_engraver::process_music ()
{
- if (!first_b_ && !left_to_do_)
- return ;
-
- first_b_ = false;
+ if (!is_first_ && !left_to_do_)
+ return;
+
+ is_first_ = false;
- Moment now = now_mom ();
+ Moment now = now_mom ();
if (do_nothing_until_ > now.main_part_)
- return ;
-
+ return;
+
Duration note_dur;
Duration *orig = 0;
if (left_to_do_)
- {
- note_dur = find_nearest_duration (left_to_do_);
- }
+ note_dur = find_nearest_duration (left_to_do_);
else
{
- orig = unsmob_duration (note_reqs_[0]->get_property ("duration"));
+ orig = unsmob_duration (note_events_[0]->get_property ("duration"));
note_dur = *orig;
}
Moment nb = next_barline_moment ();
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->get_length ();
- }
+ left_to_do_ = orig->get_length ();
if (orig && note_dur.get_length () != orig->get_length ())
{
- if (!scratch_note_reqs_.size ())
- for (int i = 0; i < note_reqs_.size (); i++)
+ if (!scratch_note_events_.size ())
+ for (int i = 0; i < note_events_.size (); i++)
{
- Music * m = note_reqs_[i]->clone ();
- scratch_note_reqs_.push (m);
+ Music *m = note_events_[i]->clone ();
+ scratch_note_events_.push (m);
}
}
-
for (int i = 0;
- left_to_do_ && i < note_reqs_.size (); i++)
+ left_to_do_ && i < note_events_.size (); i++)
{
- Item *note = make_item ("NoteHead");
-
- Music * req = note_reqs_[i];
- if (scratch_note_reqs_.size ())
+ Music *event = note_events_[i];
+ if (scratch_note_events_.size ())
{
- req = scratch_note_reqs_[i];
- SCM pits = note_reqs_[i]->get_property ("pitch");
- req->set_property ("pitch",pits);
+ event = scratch_note_events_[i];
+ SCM pits = note_events_[i]->get_property ("pitch");
+ event->set_property ("pitch", pits);
}
-
- req->set_property ("duration", note_dur.smobbed_copy ());
+
+ event->set_property ("duration", note_dur.smobbed_copy ());
+
+ Item *note = make_item ("NoteHead", event->self_scm ());
note->set_property ("duration-log",
- gh_int2scm (note_dur.duration_log ()));
-
- int dots= note_dur.dot_count ();
+ scm_from_int (note_dur.duration_log ()));
+
+ int dots = note_dur.dot_count ();
if (dots)
{
- Item * d = make_item ("Dots");
+ Item *d = make_item ("Dots", SCM_EOL);
Rhythmic_head::set_dots (note, d);
/*
- measly attempt to save an eeny-weenie bit of memory.
+ measly attempt to save an eeny-weenie bit of memory.
*/
- if (dots != gh_scm2int (d->get_property ("dot-count")))
- d->set_property ("dot-count", gh_int2scm (dots));
+ if (dots != scm_to_int (d->get_property ("dot-count")))
+ d->set_property ("dot-count", scm_from_int (dots));
d->set_parent (note, Y_AXIS);
- announce_grob (d, SCM_EOL);
dots_.push (d);
}
- Pitch *pit =unsmob_pitch (req->get_property ("pitch"));
+ Pitch *pit = unsmob_pitch (event->get_property ("pitch"));
int pos = pit->steps ();
SCM c0 = get_property ("middleCPosition");
- if (gh_number_p (c0))
- pos += gh_scm2int (c0);
+ if (scm_is_number (c0))
+ pos += scm_to_int (c0);
- note->set_property ("staff-position", gh_int2scm (pos));
- announce_grob (note,req->self_scm ());
+ note->set_property ("staff-position", scm_from_int (pos));
notes_.push (note);
}
-
+
if (prev_notes_.size () == notes_.size ())
{
- for (int i= 0; i < notes_.size (); i++)
+ for (int i = 0; i < notes_.size (); i++)
{
- Grob * p = make_spanner ("Tie");
- Tie::set_interface (p); // cannot remove yet!
-
+ Grob *p = make_spanner ("Tie", SCM_EOL);
Tie::set_head (p, LEFT, prev_notes_[i]);
Tie::set_head (p, RIGHT, notes_[i]);
-
+
ties_.push (p);
- announce_grob (p, SCM_EOL);
}
}
/*
don't do complicated arithmetic with grace notes.
- */
+ */
if (orig
- && now_mom ().grace_part_ )
- {
- left_to_do_ = Rational (0,0);
- }
+ && now_mom ().grace_part_)
+ 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++)
- {
- typeset_grob (dots_[i]);
- }
+
dots_.clear ();
- for (int i = scratch_note_reqs_.size (); i--;)
- {
- scm_gc_unprotect_object (scratch_note_reqs_[i]->self_scm () );
- }
-
- scratch_note_reqs_.clear ();
+ for (int i = scratch_note_events_.size (); i--;)
+ scratch_note_events_[i]->unprotect ();
+
+ scratch_note_events_.clear ();
}
void
Moment now = now_mom ();
if (note_end_mom_.main_part_ <= now.main_part_)
{
- note_reqs_.clear ();
+ note_events_.clear ();
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 Tie",
-/* accepts */ "busy-playing-event note-event",
-/* acks */ "",
-/* reads */ "middleCPosition measurePosition measureLength",
-/* write */ "");
+#include "translator.icc"
+
+ADD_TRANSLATOR (Completion_heads_engraver,
+ /* 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 Dots Tie",
+ /* accept */ "busy-playing-event note-event",
+ /* read */ "middleCPosition measurePosition measureLength",
+ /* write */ "");
projects / lilypond.git / blobdiff