/*
- rhythmic-column-grav.cc -- implement Rhythmic_column_engraver
+ rhythmic-column-engraver.cc -- implement Rhythmic_column_engraver
source file of the GNU LilyPond music typesetter
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
-#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 "pointer-group-interface.hh"
+
+#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
+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);
-protected:
+ Link_array<Grob> rheads_;
+ Grob *stem_;
+ Grob *note_column_;
+ Grob *dotcol_;
- virtual void acknowledge_grob (Grob_info);
- virtual void create_grobs ();
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
-};
+ Grob *last_spacing_;
+ Grob *spacing_;
+ void add_spacing_item (Grob *);
+ TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
+protected:
+
+ DECLARE_ACKNOWLEDGER (dot_column);
+ DECLARE_ACKNOWLEDGER (stem);
+ DECLARE_ACKNOWLEDGER (rhythmic_head);
+ void process_acknowledged ();
+ void stop_translation_timestep ();
+};
Rhythmic_column_engraver::Rhythmic_column_engraver ()
{
- spacing_ =0 ;
+ spacing_ = 0;
last_spacing_ = 0;
-
- stem_l_ =0;
- note_column_=0;
- dotcol_l_ =0;
+
+ stem_ = 0;
+ note_column_ = 0;
+ dotcol_ = 0;
}
+void
+Rhythmic_column_engraver::add_spacing_item (Grob *g)
+{
+ if (spacing_)
+ {
+ Pointer_group_interface::add_grob (spacing_,
+ ly_symbol2scm ("left-items"),
+ g);
+ if (last_spacing_)
+ {
+ Pointer_group_interface::add_grob (last_spacing_,
+ ly_symbol2scm ("right-items"),
+ g);
+ }
+ }
+}
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);
+ note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
+
+ spacing_ = make_item ("NoteSpacing", SCM_EOL);
+ add_spacing_item (note_column_);
}
- for (int i=0; i < rhead_l_arr_.size (); i++)
+ for (int i = 0; i < rheads_.size (); i++)
{
- if (!rhead_l_arr_[i]->get_parent (X_AXIS))
- Note_column::add_head (note_column_, rhead_l_arr_[i]);
+ if (!rheads_[i]->get_parent (X_AXIS))
+ Note_column::add_head (note_column_, rheads_[i]);
}
- rhead_l_arr_.set_size (0);
+ rheads_.set_size (0);
}
-
if (note_column_)
{
- if (dotcol_l_
- && !dotcol_l_->get_parent (X_AXIS))
- {
- Note_column::set_dotcol (note_column_, dotcol_l_);
- }
+ if (dotcol_
+ && !dotcol_->get_parent (X_AXIS))
+ Note_column::set_dotcol (note_column_, dotcol_);
- if (stem_l_
- && !stem_l_->get_parent (X_AXIS))
+ if (stem_
+ && !stem_->get_parent (X_AXIS))
{
- Note_column::set_stem (note_column_, stem_l_);
- stem_l_ = 0;
+ Note_column::set_stem (note_column_, stem_);
+ stem_ = 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::acknowledge_rhythmic_head (Grob_info i)
+{
+ rheads_.push (i.grob ());
+}
+
+void
+Rhythmic_column_engraver::acknowledge_dot_column (Grob_info i)
+{
+ dotcol_ = i.grob ();
}
void
Rhythmic_column_engraver::stop_translation_timestep ()
{
- if (note_column_)
- {
- typeset_grob (note_column_);
- note_column_ =0;
- }
+ note_column_ = 0;
if (spacing_)
{
- typeset_grob (spacing_);
last_spacing_ = spacing_;
- spacing_ =0;
+ spacing_ = 0;
}
-}
-void
-Rhythmic_column_engraver::start_translation_timestep ()
-{
- dotcol_l_ =0;
- stem_l_ =0;
+ dotcol_ = 0;
+ stem_ = 0;
}
+ADD_ACKNOWLEDGER (Rhythmic_column_engraver, dot_column);
+ADD_ACKNOWLEDGER (Rhythmic_column_engraver, stem);
+ADD_ACKNOWLEDGER (Rhythmic_column_engraver, rhythmic_head);
-
-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 */ "");
+ADD_TRANSLATOR (Rhythmic_column_engraver,
+ /* doc */ "Generates NoteColumn, an objects that groups stems, noteheads and rests.",
+ /* create */ "NoteColumn NoteSpacing",
+ /* accept */ "",
+ /* read */ "",
+ /* write */ "");
projects / lilypond.git / blobdiff