source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "rhythmic-column-engraver.hh"
-#include "note-head.hh"
+
+#include "slur.hh"
+#include "engraver.hh"
+#include "rhythmic-head.hh"
#include "stem.hh"
#include "note-column.hh"
-#include "script.hh"
#include "dot-column.hh"
-#include "musical-request.hh"
+#include "event.hh"
+#include "item.hh"
+#include "group-interface.hh"
+
+
+
+/*
+ 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.
+
+ */
-Rhythmic_column_engraver::Rhythmic_column_engraver()
+
+class Rhythmic_column_engraver :public Engraver
+{
+ 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 ()
{
- stem_l_ =0;
- ncol_p_=0;
- dotcol_l_ =0;
+ 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");
+ announce_grob(note_column_, rheads_[0]->self_scm ());
+
+ spacing_ = make_item ("NoteSpacing");
+ spacing_->set_grob_property ("left-items", gh_cons (note_column_->self_scm (), SCM_EOL));
+
+
+ announce_grob (spacing_, 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_)
- {
- ncol_p_->set_stem (stem_l_);
- stem_l_ = 0;
- }
-
- for (int i=0; i < script_l_arr_.size(); i++)
+ if (stem_
+ && !stem_->get_parent (X_AXIS))
{
- if (ncol_p_)
- ncol_p_->add_script (script_l_arr_[i]);
+ Note_column::set_stem (note_column_, stem_);
+ stem_ = 0;
}
-
- script_l_arr_.clear();
+
}
}
void
-Rhythmic_column_engraver::acknowledge_element (Score_element_info i)
+Rhythmic_column_engraver::acknowledge_grob (Grob_info i)
{
- Item * item = dynamic_cast <Item *> (i.elem_l_);
- if (!item)
- return;
- if (Script *s=dynamic_cast<Script *> (item))
- {
- if (i.req_l_ && dynamic_cast <Musical_req *> (i.req_l_))
- {
- script_l_arr_.push (s);
- }
- }
- else if (Stem*s=dynamic_cast<Stem *> (item))
+ Item * item = dynamic_cast <Item *> (i.grob_);
+ if (!item || item->get_parent (X_AXIS))
+ return ;
+ if (Stem::has_interface (item))
{
- stem_l_ = s;
+ stem_ = item;
}
- else if (Rhythmic_head*r=dynamic_cast<Rhythmic_head *> (item))
+ else if (Rhythmic_head::has_interface (item))
{
- rhead_l_arr_.push (r);
+ rheads_.push (item);
}
- else if (Dot_column*d =dynamic_cast<Dot_column *> (item))
+ else if (Dot_column::has_interface (item))
{
- dotcol_l_ = d;
+ dotcol_ = item;
}
}
void
-Rhythmic_column_engraver::do_pre_move_processing()
+Rhythmic_column_engraver::stop_translation_timestep ()
{
- if (ncol_p_)
+ if (note_column_)
{
- if (! ncol_p_->h_shift_b_)
- // egcs
- ncol_p_->h_shift_b_ = get_property ("hshift", 0).operator bool ();
- if (! ncol_p_->dir_)
- ncol_p_->dir_ =(Direction) int(get_property ("ydirection", 0));
-
- typeset_element (ncol_p_);
- ncol_p_ =0;
+ typeset_grob (note_column_);
+ note_column_ =0;
}
-}
-void
-Rhythmic_column_engraver::do_post_move_processing()
-{
- script_l_arr_.clear();
- dotcol_l_ =0;
- stem_l_ =0;
+ if (spacing_)
+ {
+ typeset_grob (spacing_);
+ last_spacing_ = spacing_;
+ spacing_ =0;
+ }
+
+ dotcol_ =0;
+ stem_ =0;
}
-
-
-ADD_THIS_TRANSLATOR(Rhythmic_column_engraver);
+ENTER_DESCRIPTION(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