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/*
axis-group-engraver.cc -- implement Axis_group_engraver
source file of the GNU LilyPond music typesetter
(c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "spanner.hh"
#include "paper-column.hh"
#include "axis-group-interface.hh"
#include "engraver.hh"
#include "engraver-group-engraver.hh"
/**
Put stuff in a Spanner with an Axis_group_interface.
Use as last element of a context.
*/
class Axis_group_engraver : public Engraver
{
protected:
Spanner *staffline_p_;
Link_array<Grob> elts_;
virtual void initialize();
virtual void finalize();
virtual void acknowledge_grob (Grob_info);
virtual void create_grobs ();
virtual Spanner* get_spanner_p () const;
virtual void add_element (Grob*) ;
public:
VIRTUAL_COPY_CONS(Translator);
Axis_group_engraver ();
};
ADD_THIS_TRANSLATOR(Axis_group_engraver);
Axis_group_engraver::Axis_group_engraver ()
{
staffline_p_ = 0;
}
void
Axis_group_engraver::initialize ()
{
staffline_p_ = get_spanner_p ();
Axis_group_interface::set_interface (staffline_p_);
Axis_group_interface::set_axes (staffline_p_, Y_AXIS, Y_AXIS);
Grob * it = unsmob_grob (get_property ("currentCommandColumn"));
staffline_p_->set_bound(LEFT,it);
announce_grob (staffline_p_, 0);
}
Spanner*
Axis_group_engraver::get_spanner_p () const
{
return new Spanner (get_property ("VerticalAxisGroup"));
}
void
Axis_group_engraver::finalize ()
{
String type = daddy_grav_l ()->type_str_ ;
SCM dims = get_property ((type + "VerticalExtent").ch_C());
if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
&& gh_number_p (gh_cdr (dims)))
{
staffline_p_->set_extent_callback (Grob::preset_extent_proc, Y_AXIS);
staffline_p_->set_grob_property ("extent-Y", dims);
}
dims = get_property ((type + "MinimumVerticalExtent").ch_C());
if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
&& gh_number_p (gh_cdr (dims)))
staffline_p_->set_grob_property ("minimum-extent-Y", dims);
dims = get_property ((type + "ExtraVerticalExtent").ch_C());
if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
&& gh_number_p (gh_cdr (dims)))
staffline_p_->set_grob_property ("extra-extent-Y", dims);
Grob * it = unsmob_grob (get_property ("currentCommandColumn"));
staffline_p_->set_bound(RIGHT,it);
typeset_grob (staffline_p_);
staffline_p_ = 0;
}
void
Axis_group_engraver::acknowledge_grob (Grob_info i)
{
elts_.push (i.elem_l_);
}
/*
maybe should check if our parent_l is set, because we now get a
cyclic parent relationship if we have two Axis_group_engravers in
the context. */
void
Axis_group_engraver::create_grobs ()
{
/* UGH UGH UGH */
for (int i=0; i < elts_.size (); i++)
{
Grob *par = elts_[i]->parent_l (Y_AXIS);
if ((!par || !Axis_group_interface::has_interface (par))
&& ! elts_[i]->empty_b (Y_AXIS))
add_element (elts_[i]);
}
elts_.clear ();
}
void
Axis_group_engraver::add_element (Grob*e)
{
Axis_group_interface::add_element (staffline_p_, e);
}
////////////////////////////////////////////////////////
// maybenot such a good idea after all., to put classes in .cc
#include "hara-kiri-group-spanner.hh"
#include "rhythmic-head.hh"
class Hara_kiri_engraver : public Axis_group_engraver
{
protected:
virtual Spanner*get_spanner_p ()const;
virtual void acknowledge_grob (Grob_info);
virtual void add_element (Grob *e);
public:
VIRTUAL_COPY_CONS(Translator);
};
void
Hara_kiri_engraver::add_element (Grob*e)
{
Hara_kiri_group_spanner::add_element (staffline_p_, e);
}
Spanner*
Hara_kiri_engraver::get_spanner_p () const
{
Spanner * sp = new Spanner (get_property ("HaraKiriVerticalGroup"));
Hara_kiri_group_spanner::set_interface (sp);
return sp;
}
void
Hara_kiri_engraver::acknowledge_grob (Grob_info i)
{
Axis_group_engraver::acknowledge_grob (i);
if (Rhythmic_head::has_interface (i.elem_l_)
|| i.elem_l_->has_interface (ly_symbol2scm ("lyric-syllable-interface")))
{
Hara_kiri_group_spanner::add_interesting_item (staffline_p_, i.elem_l_);
}
}
ADD_THIS_TRANSLATOR(Hara_kiri_engraver);
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