/*
- 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--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "rhythmic-column-engraver.hh"
-#include "note-head.hh"
+#include "engraver.hh"
+#include "rhythmic-head.hh"
#include "stem.hh"
#include "note-column.hh"
-#include "script.hh"
#include "dot-column.hh"
+#include "group-interface.hh"
-Rhythmic_column_engraver::Rhythmic_column_engraver()
+/*
+ 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
{
- stem_l_ =0;
- ncol_p_=0;
- dotcol_l_ =0;
-}
+ Link_array<Grob> rheads_;
+ Grob *stem_;
+ Grob *note_column_;
+ Grob *dotcol_;
+
+ Grob *last_spacing_;
+ Grob *spacing_;
+
+ TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
+protected:
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_acknowledged_grobs ();
+ virtual void stop_translation_timestep ();
+};
+
+Rhythmic_column_engraver::Rhythmic_column_engraver ()
+{
+ spacing_ = 0;
+ last_spacing_ = 0;
+
+ stem_ = 0;
+ note_column_ = 0;
+ dotcol_ = 0;
+}
void
-Rhythmic_column_engraver::process_acknowledged ()
+Rhythmic_column_engraver::process_acknowledged_grobs ()
{
- if (rhead_l_arr_.size ())
+ if (rheads_.size ())
{
- if (!ncol_p_)
+ if (!note_column_)
{
- ncol_p_ = new Note_column;
- announce_element (Score_element_info (ncol_p_, 0));
+ note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
+
+ spacing_ = make_item ("NoteSpacing", SCM_EOL);
+ spacing_->set_property ("left-items", scm_cons (note_column_->self_scm (), SCM_EOL));
+
+ if (last_spacing_)
+ {
+ Pointer_group_interface::add_grob (last_spacing_,
+ ly_symbol2scm ("right-items"),
+ note_column_);
+ }
}
- for (int i=0; i < rhead_l_arr_.size (); i++)
+ for (int i = 0; i < rheads_.size (); i++)
{
- ncol_p_->add_head (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 (ncol_p_)
+ if (note_column_)
{
- if (dotcol_l_)
+ if (dotcol_
+ && !dotcol_->get_parent (X_AXIS))
{
- ncol_p_->set_dotcol (dotcol_l_);
+ Note_column::set_dotcol (note_column_, dotcol_);
}
- if (stem_l_)
+ if (stem_
+ && !stem_->get_parent (X_AXIS))
{
- ncol_p_->set_stem (stem_l_);
- stem_l_ = 0;
+ Note_column::set_stem (note_column_, stem_);
+ stem_ = 0;
}
-
- for (int i=0; i < script_l_arr_.size(); i++)
- {
- if (ncol_p_)
- ncol_p_->add_script (script_l_arr_[i]);
- }
-
- script_l_arr_.clear();
}
}
void
-Rhythmic_column_engraver::acknowledge_element (Score_element_info i)
+Rhythmic_column_engraver::acknowledge_grob (Grob_info i)
{
- Item * item = i.elem_l_->access_Item ();
- if (!item)
+ Item *item = dynamic_cast<Item *> (i.grob_);
+ if (!item || item->get_parent (X_AXIS))
return;
- if (item->is_type_b (Script::static_name ())
- && i.req_l_
- && i.req_l_->access_Musical_req ())
- {
- script_l_arr_.push ((Script*)item);
- }
- else if (item->is_type_b (Stem::static_name()))
+ if (Stem::has_interface (item))
{
- stem_l_ = (Stem*) item;
+ stem_ = item;
}
- else if (item->is_type_b (Rhythmic_head::static_name ()))
+ else if (Rhythmic_head::has_interface (item))
{
- rhead_l_arr_.push ((Rhythmic_head*)item);
+ rheads_.push (item);
}
- else if (item->is_type_b (Dot_column::static_name ()))
+ else if (Dot_column::has_interface (item))
{
- dotcol_l_ = (Dot_column*) item;
+ dotcol_ = item;
}
}
void
-Rhythmic_column_engraver::do_pre_move_processing()
+Rhythmic_column_engraver::stop_translation_timestep ()
{
- if (ncol_p_)
+ note_column_ = 0;
+
+ if (spacing_)
{
- if (! ncol_p_->h_shift_b_)
- // egcs
- ncol_p_->h_shift_b_ = get_property ("hshift").operator bool ();
- if (! ncol_p_->dir_)
- ncol_p_->dir_ =(Direction) int(get_property ("ydirection"));
-
- typeset_element (ncol_p_);
- ncol_p_ =0;
+ last_spacing_ = spacing_;
+ spacing_ = 0;
}
-}
-void
-Rhythmic_column_engraver::do_post_move_processing()
-{
- script_l_arr_.clear();
- dotcol_l_ =0;
- stem_l_ =0;
+ dotcol_ = 0;
+ stem_ = 0;
}
-
-
-
-IMPLEMENT_IS_TYPE_B1(Rhythmic_column_engraver,Engraver);
-ADD_THIS_TRANSLATOR(Rhythmic_column_engraver);
+ADD_TRANSLATOR (Rhythmic_column_engraver,
+ /* descr */ "Generates NoteColumn, an objects that groups stems, noteheads and rests.",
+ /* creats*/ "NoteColumn NoteSpacing",
+ /* accepts */ "",
+ /* acks */ "stem-interface rhythmic-head-interface dot-column-interface",
+ /* reads */ "",
+ /* write */ "");
projects / lilypond.git / blobdiff