-/*
- note-head-line-engraver.cc -- implement Note_head_line_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
-#include "warn.hh"
-#include "event.hh"
-#include "spanner.hh"
-#include "rhythmic-head.hh"
-#include "engraver.hh"
+ Copyright (C) 2000--2015 Jan Nieuwenhuizen <janneke@gnu.org>
+
+ 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.
-/**
- Create line-spanner grobs for glissandi lines that connect note
- heads.
+ 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 "engraver.hh"
+
+#include "international.hh"
+#include "pointer-group-interface.hh"
+#include "rhythmic-head.hh"
+#include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+#include "item.hh"
+
+#include "translator.icc"
+
class Glissando_engraver : public Engraver
{
public:
TRANSLATOR_DECLARATIONS (Glissando_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
+ DECLARE_TRANSLATOR_LISTENER (glissando);
+ DECLARE_ACKNOWLEDGER (note_column);
virtual void finalize ();
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
- virtual void process_music ();
+
+ void stop_translation_timestep ();
+ void process_music ();
+
private:
- Spanner *line_;
- Spanner *last_line_;
- Music* event_;
+ vector<Spanner *> lines_;
+ vector<Spanner *> kill_me_;
+ bool start_glissandi_;
+ bool stop_glissandi_;
+
+ Stream_event *event_;
+ vector<vsize> note_column_1;
+ vector<vsize> note_column_2;
};
Glissando_engraver::Glissando_engraver ()
{
- last_line_ = line_ = 0;
event_ = 0;
+ start_glissandi_ = false;
+ stop_glissandi_ = false;
}
-bool
-Glissando_engraver::try_music (Music* m)
+IMPLEMENT_TRANSLATOR_LISTENER (Glissando_engraver, glissando);
+void
+Glissando_engraver::listen_glissando (Stream_event *ev)
{
- if (!event_)
- {
- event_ = m;
- return true;
- }
- return false;
+ ASSIGN_EVENT_ONCE (event_, ev);
}
void
Glissando_engraver::process_music ()
{
if (event_)
- {
- line_ = make_spanner ("Glissando", event_->self_scm ());
- }
+ start_glissandi_ = true;
}
-
void
-Glissando_engraver::acknowledge_grob (Grob_info info)
+Glissando_engraver::acknowledge_note_column (Grob_info info)
{
- if (Rhythmic_head::has_interface (info.grob_))
+ Grob *g = info.grob ();
+ if (to_boolean (g->get_property ("glissando-skip")))
+ return;
+
+ if (stop_glissandi_)
{
- Grob * g = info.grob_;
- if (line_)
- line_->set_bound (LEFT, g);
+ extract_grob_set (g, "note-heads", note_heads);
+ int glissando_index = 0;
+ for (vsize i = 0; i < note_column_1.size (); i++)
+ {
+ if (note_column_2[i] >= note_heads.size ())
+ {
+ kill_me_.push_back (lines_[i]);
+ announce_end_grob (lines_[i], SCM_EOL);
+ }
+ else
+ {
+ lines_[i]->set_bound (RIGHT, note_heads[note_column_2[i]]);
+ lines_[i]->set_property ("glissando-index", scm_from_int (glissando_index));
+ glissando_index++;
+ announce_end_grob (lines_[i], note_heads[note_column_2[i]]->self_scm ());
+ }
+ }
+ lines_.clear ();
+ note_column_1.clear ();
+ note_column_2.clear ();
+ stop_glissandi_ = false;
+ }
- if (last_line_)
- last_line_->set_bound (RIGHT, g);
- }
+ if (start_glissandi_)
+ {
+ extract_grob_set (g, "note-heads", note_heads);
+ SCM map = get_property ("glissandoMap");
+ if (map == SCM_EOL)
+ for (vsize i = 0; i < note_heads.size (); i++)
+ {
+ note_column_1.push_back (i);
+ note_column_2.push_back (i);
+ }
+ else
+ for (SCM m = map; scm_is_pair (m); m = scm_cdr (m))
+ {
+ SCM candidate = scm_car (m);
+ if (!scm_is_pair (candidate))
+ continue;
+ int n1 = robust_scm2int (scm_car (candidate), -1);
+ int n2 = robust_scm2int (scm_cdr (candidate), -1);
+ if ((n1 < 0) || (n2 < 0) || (size_t (n1) >= note_heads.size ()))
+ continue;
+ note_column_1.push_back (vsize (n1));
+ note_column_2.push_back (vsize (n2));
+ }
+ for (vsize i = 0; i < note_column_1.size (); i++)
+ {
+ lines_.push_back (make_spanner ("Glissando", event_->self_scm ()));
+ lines_.back ()->set_bound (LEFT, note_heads[note_column_1[i]]);
+ }
+ }
}
-
void
Glissando_engraver::stop_translation_timestep ()
{
- if (last_line_ && last_line_->get_bound (RIGHT))
- {
- typeset_grob (last_line_);
- last_line_ =0;
- }
- if (line_)
+ if (start_glissandi_)
{
- if ( last_line_)
- programming_error ("Overwriting glissando.");
- last_line_ = line_;
+ if (stop_glissandi_)
+ programming_error ("overwriting glissando");
+ stop_glissandi_ = true;
+ start_glissandi_ = false;
}
- line_ = 0;
event_ = 0;
}
void
Glissando_engraver::finalize ()
{
- if (line_)
+ if (!lines_.empty ())
{
- String msg = _("Unterminated glissando.");
-
+ string msg = _ ("unterminated glissando");
+
if (event_)
- event_->origin ()->warning (msg);
+ event_->origin ()->warning (msg);
else
- warning (msg);
-
- line_->suicide ();
- line_ =0;
+ warning (msg);
+
+ for (vsize i = 0; i < lines_.size (); i++)
+ lines_[i]->suicide ();
}
+
+ for (vsize i = 0; i < kill_me_.size (); i++)
+ kill_me_[i]->suicide ();
}
+ADD_ACKNOWLEDGER (Glissando_engraver, note_column);
+ADD_TRANSLATOR (Glissando_engraver,
+ /* doc */
+ "Engrave glissandi.",
+
+ /* create */
+ "Glissando ",
+ /* read */
+ "glissandoMap ",
-ENTER_DESCRIPTION (Glissando_engraver,
-/* descr */ "Engrave a glissandi",
-/* creats*/ "Glissando",
-/* accepts */ "glissando-event",
-/* acks */ "rhythmic-head-interface",
-/* reads */ "followVoice",
-/* write */ "");
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff