/*
cluster-engraver.cc -- implement Cluster_engraver
- (c) 2002--2003 Juergen Reuter <reuter@ipd.uka.de>
+ (c) 2002--2006 Juergen Reuter <reuter@ipd.uka.de>
- Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "engraver.hh"
-#include "item.hh"
#include "spanner.hh"
#include "note-head.hh"
-#include "protected-scm.hh"
-#include "warn.hh"
#include "note-column.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
+#include "pitch.hh"
-class Cluster_engraver : public Engraver
+class Cluster_spanner_engraver : public Engraver
{
protected:
-TRANSLATOR_DECLARATIONS(Cluster_engraver);
+ TRANSLATOR_DECLARATIONS (Cluster_spanner_engraver);
virtual bool try_music (Music *);
- virtual void process_music ();
- virtual void acknowledge_grob (Grob_info);
- virtual void stop_translation_timestep ();
-
+ void process_music ();
+ DECLARE_ACKNOWLEDGER (note_column);
+ void stop_translation_timestep ();
+ virtual void finalize ();
private:
- Drul_array<Music*> reqs_drul_;
+ Link_array<Music> cluster_notes_;
+ Item *beacon_;
- Spanner *cluster_;
+ void typeset_grobs ();
+ Spanner *spanner_;
+ Spanner *finished_spanner_;
};
-Cluster_engraver::Cluster_engraver ()
+Cluster_spanner_engraver::Cluster_spanner_engraver ()
+{
+ spanner_ = 0;
+ finished_spanner_ = 0;
+ beacon_ = 0;
+}
+
+void
+Cluster_spanner_engraver::finalize ()
+{
+ typeset_grobs ();
+ finished_spanner_ = spanner_;
+ spanner_ = 0;
+ typeset_grobs ();
+}
+
+void
+Cluster_spanner_engraver::typeset_grobs ()
{
- cluster_ = 0;
- reqs_drul_[LEFT] = reqs_drul_[RIGHT] = 0;
+ finished_spanner_ = 0;
+ beacon_ = 0;
}
bool
-Cluster_engraver::try_music (Music *m)
+Cluster_spanner_engraver::try_music (Music *m)
{
- if (m->is_mus_type ("abort-event"))
+ if (m->is_mus_type ("cluster-note-event"))
{
- reqs_drul_[START] = 0;
- reqs_drul_[STOP] = 0;
- if (cluster_)
- {
- cluster_->suicide ();
- cluster_ = 0;
- }
- }
- else if (m->is_mus_type ("cluster-event"))
- {
- Direction d = to_dir (m->get_mus_property ("span-direction"));
-
- reqs_drul_[d] = m;
+ cluster_notes_.push_back (m);
return true;
}
+ else if (m->is_mus_type ("busy-playing-event"))
+ return cluster_notes_.size ();
+
return false;
}
void
-Cluster_engraver::process_music ()
+Cluster_spanner_engraver::process_music ()
{
- if (reqs_drul_[STOP])
+ if (cluster_notes_.size ())
{
- if (!cluster_)
- {
- reqs_drul_[STOP]->origin ()->warning ("can't find start of cluster");
- }
- else
+ SCM c0scm = get_property ("middleCPosition");
+
+ int c0 = scm_is_number (c0scm) ? scm_to_int (c0scm) : 0;
+ int pmax = INT_MIN;
+ int pmin = INT_MAX;
+
+ for (vsize i = 0; i < cluster_notes_.size (); i++)
{
- Grob *bound = unsmob_grob (get_property ("currentMusicalColumn"));
- cluster_->set_bound (RIGHT, bound);
+ Pitch *pit = unsmob_pitch (cluster_notes_[i]->get_property ("pitch"));
+
+ int p = (pit ? pit->steps () : 0) + c0;
+
+ pmax = max (pmax, p);
+ pmin = min (pmin, p);
}
+
+ beacon_ = make_item ("ClusterSpannerBeacon", cluster_notes_[0]->self_scm ());
+ beacon_->set_property ("positions",
+ scm_cons (scm_from_int (pmin),
+ scm_from_int (pmax)));
}
- if (reqs_drul_[START])
+
+ if (beacon_ && !spanner_)
+ spanner_ = make_spanner ("ClusterSpanner", cluster_notes_[0]->self_scm ());
+
+ if (beacon_ && spanner_)
{
- if (cluster_)
- {
- reqs_drul_[START]->origin ()->warning ("may not nest clusters");
- }
- else
- {
- cluster_ = new Spanner (get_property ("Cluster"));
- Grob *bound = unsmob_grob (get_property ("currentMusicalColumn"));
- cluster_->set_bound (LEFT, bound);
- announce_grob (cluster_, reqs_drul_[START]->self_scm ());
- }
- reqs_drul_[START] = 0;
+ add_bound_item (spanner_, beacon_);
+ Pointer_group_interface::add_grob (spanner_, ly_symbol2scm ("columns"), beacon_);
}
}
-
void
-Cluster_engraver::stop_translation_timestep ()
+Cluster_spanner_engraver::stop_translation_timestep ()
{
- if (reqs_drul_[STOP])
- {
- reqs_drul_[STOP] = 0;
- typeset_grob (cluster_);
- cluster_ = 0;
- }
+ typeset_grobs ();
+ cluster_notes_.clear ();
}
void
-Cluster_engraver::acknowledge_grob (Grob_info info)
+Cluster_spanner_engraver::acknowledge_note_column (Grob_info info)
{
- if (cluster_ && Note_column::has_interface (info.grob_))
+ if (!beacon_ && Note_column::has_interface (info.grob ()))
{
- Pointer_group_interface::add_grob (cluster_, ly_symbol2scm ("columns"), info.grob_);
+ finished_spanner_ = spanner_;
+ spanner_ = 0;
}
}
-ENTER_DESCRIPTION(Cluster_engraver,
-/* descr */ "engraves a cluster",
-/* creats*/ "Cluster",
-/* accepts */ "cluster-event",
-/* acks */ "note-column-interface",
-/* reads */ "",
-/* write */ "");
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (Cluster_spanner_engraver, note_column);
+ADD_TRANSLATOR (Cluster_spanner_engraver,
+ /* doc */ "Engraves a cluster using Spanner notation ",
+ /* create */ "ClusterSpanner ClusterSpannerBeacon",
+ /* accept */ "cluster-note-event busy-playing-event",
+ /* read */ "",
+ /* write */ "");
+