source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
Manage the staff symbol.
*/
class Staff_symbol_engraver : public Engraver {
- Spanner *span_;
public:
TRANSLATOR_DECLARATIONS(Staff_symbol_engraver);
protected:
+ Spanner *span_;
+
virtual ~Staff_symbol_engraver ();
virtual void acknowledge_grob (Grob_info);
virtual void finalize ();
- virtual void initialize ();
+ virtual void process_music ();
};
}
void
-Staff_symbol_engraver::initialize ()
+Staff_symbol_engraver::process_music ()
{
- span_ = new Spanner (get_property ("StaffSymbol"));
+ if (!span_)
+ {
+ span_ = make_spanner ("StaffSymbol");
- span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+ span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
- announce_grob(span_, SCM_EOL);
+ announce_grob(span_, SCM_EOL);
+ }
}
void
Staff_symbol_engraver::finalize ()
{
- span_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
- typeset_grob (span_);
+ if (span_)
+ {
+ span_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
+ typeset_grob (span_);
+ }
span_ =0;
}
ENTER_DESCRIPTION(Staff_symbol_engraver,
-/* descr */ "create the constellation of five (default)
-staff lines.",
+/* descr */ "Create the constellation of five (default) "
+"staff lines.",
/* creats*/ "StaffSymbol",
-/* acks */ "grob-interface",
+/* accepts */ "",
+/* acks */ "grob-interface",
/* reads */ "",
/* write */ "");
+
+/****************************************************************/
+
+
+class Tab_staff_symbol_engraver : public Staff_symbol_engraver
+{
+public:
+ TRANSLATOR_DECLARATIONS(Tab_staff_symbol_engraver);
+protected:
+ virtual void process_music ();
+};
+
+void
+Tab_staff_symbol_engraver::process_music ()
+{
+ bool init = !span_;
+ Staff_symbol_engraver::process_music();
+ if (init)
+ {
+ int k = scm_ilength (get_property ("stringTunings"));
+ if (k>=0)
+ span_->set_grob_property ("line-count", gh_int2scm (k));
+ }
+}
+
+Tab_staff_symbol_engraver::Tab_staff_symbol_engraver()
+{
+}
+
+ENTER_DESCRIPTION(Tab_staff_symbol_engraver,
+/* descr */ "Create a staff-symbol, but look at stringTunings for the number of lines."
+"staff lines.",
+/* creats*/ "StaffSymbol",
+/* accepts */ "",
+/* acks */ "grob-interface",
+/* reads */ "stringTunings",
+/* write */ "");