/*
- rhythmic-column-grav.cc -- implement Rhythmic_column_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
+ 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.
+
+ 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 "slur.hh"
#include "engraver.hh"
#include "rhythmic-head.hh"
#include "stem.hh"
#include "note-column.hh"
-#include "dot-column.hh"
-#include "musical-request.hh"
#include "item.hh"
+#include "dot-column.hh"
+#include "pointer-group-interface.hh"
-class Rhythmic_column_engraver :public Engraver
+#include "translator.icc"
+
+/*
+ this engraver glues together stems, rests and note heads into a NoteColumn
+ grob.
+
+ It also generates spacing objects. Originally, we have tried to
+ have the spacing functionality at different levels.
+
+ - by simply using the sequence of Separation-item as
+ spacing-sequences (at staff level). Unfortunately, this fucks up if
+ there are different kinds of tuplets in different voices (8th and
+ 8ths triplets combined made the program believe there were 1/12 th
+ notes.).
+
+ Doing it in a separate engraver using timing info is generally
+ complicated (start/end time management), and fucks up if a voice
+ changes staff.
+
+ Now we do it from here again. This has the problem that voices can
+ appear and disappear at will, leaving lots of loose ends (the note
+ spacing engraver don't know where to connect the last note of the
+ voice on the right with), but we don't complain about those, and let
+ the default spacing do its work.
+*/
+
+class Rhythmic_column_engraver : public Engraver
{
- Link_array<Grob> rhead_l_arr_;
- Grob * stem_l_;
- Grob * note_column_;
- Grob * dotcol_l_;
-
- Grob * last_spacing_;
- Grob * spacing_;
-
- TRANSLATOR_DECLARATIONS(Rhythmic_column_engraver);
+ vector<Grob *> rheads_;
+ Grob *stem_;
+ Grob *flag_;
+ Grob *note_column_;
+
+ TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void create_grobs ();
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
+ void acknowledge_stem (Grob_info);
+ void acknowledge_flag (Grob_info);
+ void acknowledge_rhythmic_head (Grob_info);
+ void process_acknowledged ();
+ void stop_translation_timestep ();
};
-
-
Rhythmic_column_engraver::Rhythmic_column_engraver ()
{
- spacing_ =0 ;
- last_spacing_ = 0;
-
- stem_l_ =0;
- note_column_=0;
- dotcol_l_ =0;
-}
+ stem_ = 0;
+ flag_ = 0;
+ note_column_ = 0;
+}
void
-Rhythmic_column_engraver::create_grobs ()
+Rhythmic_column_engraver::process_acknowledged ()
{
- if (rhead_l_arr_.size ())
+ if (rheads_.size ())
{
if (!note_column_)
- {
- note_column_ = new Item (get_property ("NoteColumn"));
- Note_column::set_interface (note_column_);
- announce_grob (note_column_, 0);
-
- spacing_ = new Item (get_property ("NoteSpacing"));
- spacing_->set_grob_property ("left-item", note_column_->self_scm ());
- announce_grob (spacing_, 0);
-
- if (last_spacing_)
- {
- last_spacing_->set_grob_property ("right-item" , note_column_->self_scm ());
- }
- }
-
- for (int i=0; i < rhead_l_arr_.size (); i++)
- {
- if (!rhead_l_arr_[i]->get_parent (X_AXIS))
- Note_column::add_head (note_column_, rhead_l_arr_[i]);
- }
- rhead_l_arr_.set_size (0);
+ note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
+
+ for (vsize i = 0; i < rheads_.size (); i++)
+ if (!rheads_[i]->get_parent (X_AXIS))
+ Note_column::add_head (note_column_, rheads_[i]);
+
+ rheads_.resize (0);
}
-
if (note_column_)
{
- if (dotcol_l_
- && !dotcol_l_->get_parent (X_AXIS))
- {
- Note_column::set_dotcol (note_column_, dotcol_l_);
- }
-
- if (stem_l_
- && !stem_l_->get_parent (X_AXIS))
- {
- Note_column::set_stem (note_column_, stem_l_);
- stem_l_ = 0;
- }
-
+ if (stem_
+ && !stem_->get_parent (X_AXIS))
+ {
+ Note_column::set_stem (note_column_, stem_);
+ stem_ = 0;
+ }
+
+ if (flag_)
+ {
+ Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), flag_);
+ flag_ = 0;
+ }
}
}
void
-Rhythmic_column_engraver::acknowledge_grob (Grob_info i)
+Rhythmic_column_engraver::acknowledge_stem (Grob_info i)
{
- Item * item = dynamic_cast <Item *> (i.grob_l_);
- if (item && Stem::has_interface (item))
- {
- stem_l_ = item;
- }
- else if (item && Rhythmic_head::has_interface (item))
- {
- rhead_l_arr_.push (item);
- }
- else if (item && Dot_column::has_interface (item))
- {
- dotcol_l_ = item;
- }
+ stem_ = i.grob ();
}
void
-Rhythmic_column_engraver::stop_translation_timestep ()
+Rhythmic_column_engraver::acknowledge_flag (Grob_info i)
{
- if (note_column_)
- {
- typeset_grob (note_column_);
- note_column_ =0;
- }
+ flag_ = i.grob ();
+}
- if (spacing_)
- {
- typeset_grob (spacing_);
- last_spacing_ = spacing_;
- spacing_ =0;
- }
+void
+Rhythmic_column_engraver::acknowledge_rhythmic_head (Grob_info i)
+{
+ rheads_.push_back (i.grob ());
}
void
-Rhythmic_column_engraver::start_translation_timestep ()
+Rhythmic_column_engraver::stop_translation_timestep ()
{
- dotcol_l_ =0;
- stem_l_ =0;
+ note_column_ = 0;
+ stem_ = 0;
+ flag_ = 0;
}
+void
+Rhythmic_column_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Rhythmic_column_engraver, stem);
+ ADD_ACKNOWLEDGER (Rhythmic_column_engraver, flag);
+ ADD_ACKNOWLEDGER (Rhythmic_column_engraver, rhythmic_head);
+}
+
+ADD_TRANSLATOR (Rhythmic_column_engraver,
+ /* doc */
+ "Generate @code{NoteColumn}, an object that groups stems,"
+ " note heads, and rests.",
+
+ /* create */
+ "NoteColumn ",
+
+ /* read */
+ "",
-ENTER_DESCRIPTION(Rhythmic_column_engraver,
-/* descr */ "Generates NoteColumn, an objects that groups stems, noteheads and rests.",
-/* creats*/ "NoteColumn",
-/* acks */ "stem-interface rhythmic-head-interface dot-column-interface",
-/* reads */ "",
-/* write */ "");
+ /* write */
+ ""
+ );