source file of the GNU LilyPond music typesetter
- (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2007 Jan Nieuwenhuizen <janneke@gnu.org>
*/
+#include "engraver.hh"
+
+#include "international.hh"
#include "note-column.hh"
#include "side-position-interface.hh"
-#include "engraver.hh"
+#include "spanner.hh"
+#include "stream-event.hh"
+
+#include "translator.icc"
class Text_spanner_engraver : public Engraver
{
TRANSLATOR_DECLARATIONS (Text_spanner_engraver);
protected:
virtual void finalize ();
- virtual void acknowledge_grob (Grob_info);
- virtual bool try_music (Music *);
- PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
- PRECOMPUTED_VIRTUAL void process_music ();
+ DECLARE_TRANSLATOR_LISTENER (text_span);
+ void stop_translation_timestep ();
+ void process_music ();
private:
Spanner *span_;
Spanner *finished_;
- Music *current_req_;
- Drul_array<Music *> req_drul_;
+ Stream_event *current_event_;
+ Drul_array<Stream_event *> event_drul_;
void typeset_all ();
};
Text_spanner_engraver::Text_spanner_engraver ()
{
finished_ = 0;
- current_req_ = 0;
+ current_event_ = 0;
span_ = 0;
- req_drul_[START] = 0;
- req_drul_[STOP] = 0;
+ event_drul_[START] = 0;
+ event_drul_[STOP] = 0;
}
-bool
-Text_spanner_engraver::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Text_spanner_engraver, text_span);
+void
+Text_spanner_engraver::listen_text_span (Stream_event *ev)
{
- if (m->is_mus_type ("text-span-event"))
- {
- Direction d = to_dir (m->get_property ("span-direction"));
- req_drul_[d] = m;
- return true;
- }
-
- return false;
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ ASSIGN_EVENT_ONCE (event_drul_[d], ev);
}
void
Text_spanner_engraver::process_music ()
{
- if (req_drul_[STOP])
+ if (event_drul_[STOP])
{
if (!span_)
- {
- req_drul_[STOP]->origin ()->warning (_ ("can't find start of text spanner"));
- }
+ event_drul_[STOP]->origin ()->warning (_ ("cannot find start of text spanner"));
else
{
finished_ = span_;
span_ = 0;
- current_req_ = 0;
+ current_event_ = 0;
}
}
- if (req_drul_[START])
+ if (event_drul_[START])
{
- if (current_req_)
- {
- req_drul_[START]->origin ()->warning (_ ("already have a text spanner"));
- }
+ if (current_event_)
+ event_drul_[START]->origin ()->warning (_ ("already have a text spanner"));
else
{
- current_req_ = req_drul_[START];
- span_ = make_spanner ("TextSpanner", req_drul_[START]->self_scm ());
+ current_event_ = event_drul_[START];
+ span_ = make_spanner ("TextSpanner", event_drul_[START]->self_scm ());
Side_position_interface::set_axis (span_, Y_AXIS);
- req_drul_[START] = 0;
- }
- }
-}
-
-void
-Text_spanner_engraver::acknowledge_grob (Grob_info info)
-{
- Spanner *spans[2] ={span_, finished_};
- for (int i = 0; i < 2; i++)
- {
- if (spans[i] && Note_column::has_interface (info.grob ()))
- {
- Side_position_interface::add_support (spans[i], info.grob ());
- add_bound_item (spans[i], dynamic_cast<Item *> (info.grob ()));
+ event_drul_[START] = 0;
}
}
}
}
typeset_all ();
- req_drul_[START] = 0;
- req_drul_[STOP] = 0;
+ event_drul_[START] = 0;
+ event_drul_[STOP] = 0;
}
void
typeset_all ();
if (span_)
{
- current_req_->origin ()->warning (_ ("unterminated text spanner"));
+ current_event_->origin ()->warning (_ ("unterminated text spanner"));
span_->suicide ();
span_ = 0;
}
}
-#include "translator.icc"
-
ADD_TRANSLATOR (Text_spanner_engraver,
- /* descr */ "Create text spanner from a Music.",
- /* creats*/ "TextSpanner",
- /* accepts */ "text-span-event",
- /* acks */ "note-column-interface",
- /* reads */ "",
- /* write */ "");
+ /* doc */
+ "Create text spanner from an event.",
+ /* create */
+ "TextSpanner ",
+ /* read */
+ "",
+ /* write */
+ ""
+ );