source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "note-column.hh"
-#include "collision-engraver.hh"
-#include "collision.hh"
-#include "dimension-cache.hh"
+#include "note-collision.hh"
+
+#include "engraver.hh"
+#include "axis-group-interface.hh"
+
+/*
+ collect Note_column, and as soon as there are 2 or more, put them in
+ a collision object. */
+class Collision_engraver : public Engraver
+{
+ Item * col_;
+ Link_array<Grob> note_columns_;
+
+protected:
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_acknowledged_grobs ();
+ virtual void stop_translation_timestep ();
+public:
+ TRANSLATOR_DECLARATIONS(Collision_engraver);
+};
+
void
-Collision_engraver::process_acknowledged ()
+Collision_engraver::process_acknowledged_grobs ()
{
-
- if (col_p_ || note_column_l_arr_.size () < 2)
- return ;
- if (!col_p_)
+ if (col_ || note_columns_.size () < 2)
+ return ;
+ if (!col_)
{
- col_p_ = new Collision;
- announce_element (Score_element_info (col_p_,0));
+ col_ = make_item ("NoteCollision");
+ announce_grob (col_, SCM_EOL);
}
- for (int i=0; i< note_column_l_arr_.size (); i++)
- col_p_->add_column (note_column_l_arr_[i]);
+
+ for (int i=0; i< note_columns_.size (); i++)
+ Note_collision_interface::add_column (col_,note_columns_[i]);
}
void
-Collision_engraver::acknowledge_element (Score_element_info i)
+Collision_engraver::acknowledge_grob (Grob_info i)
{
- if (Note_column * c = dynamic_cast<Note_column *> (i.elem_l_))
+ if (Note_column::has_interface (i.grob_))
{
/*should check Y axis? */
- if (c->rest_b () || c->parent_l(X_AXIS))
+ if (Note_column::rest_b (i.grob_) || i.grob_->get_parent (X_AXIS))
return ;
- note_column_l_arr_.push (c);
+ note_columns_.push (i.grob_);
}
}
void
-Collision_engraver::do_pre_move_processing()
+Collision_engraver::stop_translation_timestep ()
{
- if (col_p_)
+ if (col_)
{
- typeset_element (col_p_);
- col_p_ =0;
+ typeset_grob (col_);
+ col_ =0;
}
- note_column_l_arr_.clear ();
+ note_columns_.clear ();
}
-Collision_engraver::Collision_engraver()
+Collision_engraver::Collision_engraver ()
{
- col_p_ =0;
+ col_ =0;
}
-ADD_THIS_TRANSLATOR(Collision_engraver);
+
+ENTER_DESCRIPTION(Collision_engraver,
+/* descr */ "",
+/* creats*/ "NoteCollision",
+/* accepts */ "",
+/* acks */ "note-column-interface",
+/* reads */ "",
+/* write */ "");