source file of the GNU LilyPond music typesetter
- (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2004--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "pointer-group-interface.hh"
class Ledger_line_engraver : public Engraver
{
Spanner *span_;
-
+ vector<Grob*> ledgered_grobs_;
+
public:
TRANSLATOR_DECLARATIONS (Ledger_line_engraver);
void start_spanner ();
void stop_spanner ();
+ void stop_translation_timestep ();
};
Ledger_line_engraver::Ledger_line_engraver ()
Ledger_line_engraver::start_spanner ()
{
assert (!span_);
- span_ = make_spanner ("LedgerLineSpanner", SCM_EOL);
+ span_ = make_spanner ("LedgerLineSpanner", SCM_EOL);
span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
}
+void
+Ledger_line_engraver::stop_translation_timestep ()
+{
+ if (span_)
+ {
+ for (vsize i = 0; i < ledgered_grobs_.size (); i++)
+ {
+ if (!to_boolean (ledgered_grobs_[i]->get_property ("no-ledgers")))
+ Pointer_group_interface::add_grob (span_,
+ ly_symbol2scm ("note-heads"),
+ ledgered_grobs_[i]);
+ }
+ }
+
+ ledgered_grobs_.clear ();
+}
+
void
Ledger_line_engraver::process_music ()
{
+ /*
+ Need to do this, otherwise the first note might miss ledgers.
+ */
if (!span_)
start_spanner ();
}
if (span_)
{
span_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
+ Pointer_group_interface::set_ordered (span_, ly_symbol2scm ("elements"), false);
span_ = 0;
}
}
Spanner *sym = dynamic_cast<Spanner *> (s.grob ());
if (!span_
- || span_->get_bound (LEFT) != sym->get_bound (LEFT))
+ || (span_->get_bound (LEFT) != sym->get_bound (LEFT)))
{
stop_spanner ();
start_spanner ();
void
Ledger_line_engraver::acknowledge_ledgered (Grob_info s)
{
- if (span_)
- {
- if (!to_boolean (s.grob ()->get_property ("no-ledgers")))
- Pointer_group_interface::add_grob (span_, ly_symbol2scm ("note-heads"),
- s.grob ());
- }
+ ledgered_grobs_.push_back (s.grob ());
}
#include "translator.icc"
ADD_TRANSLATOR (Ledger_line_engraver,
"Creates the spanner to draw ledger lines, and notices objects that need ledger lines",
/* create */ "LedgerLineSpanner",
- /* accept */ "",
/* read */ "",
/* write */ "")