source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "musical-request.hh"
-#include "main.hh"
-#include "dimensions.hh"
-#include "g-text-item.hh"
+#include "context.hh"
#include "engraver.hh"
-#include "array.hh"
-#include "lily-proto.hh"
-
-class Lyric_engraver : public Engraver
+#include "font-metric.hh"
+#include "item.hh"
+#include "multi-measure-rest.hh"
+#include "note-head.hh"
+#include "rest.hh"
+#include "stream-event.hh"
+
+#include "translator.icc"
+
+/**
+ Generate texts for lyric syllables. We only do one lyric at a time.
+ Multiple copies of this engraver should be used to do multiple voices.
+*/
+class Lyric_engraver : public Engraver
{
protected:
- virtual void do_pre_move_processing();
- virtual bool do_try_music (Music*);
- virtual void do_process_requests();
+ void stop_translation_timestep ();
+ void process_music ();
+ DECLARE_TRANSLATOR_LISTENER (lyric);
public:
- Lyric_engraver();
- VIRTUAL_COPY_CONS(Translator);
+ TRANSLATOR_DECLARATIONS (Lyric_engraver);
private:
- Link_array<Lyric_req> lyric_req_l_arr_;
- Link_array<Item> text_p_arr_;
-};
-
+ Stream_event *event_;
+ Item *text_;
+ Item *last_text_;
-ADD_THIS_TRANSLATOR(Lyric_engraver);
+ Context *get_voice_context ();
+};
+Lyric_engraver::Lyric_engraver ()
+{
+ text_ = 0;
+ last_text_ = 0;
+ event_ = 0;
+}
-Lyric_engraver::Lyric_engraver()
+IMPLEMENT_TRANSLATOR_LISTENER (Lyric_engraver, lyric);
+void
+Lyric_engraver::listen_lyric (Stream_event *ev)
{
+ ASSIGN_EVENT_ONCE (event_, ev);
}
-bool
-Lyric_engraver::do_try_music (Music*r)
+void
+Lyric_engraver::process_music ()
{
- if (Lyric_req* l = dynamic_cast <Lyric_req *> (r))
+ if (event_)
{
- lyric_req_l_arr_.push (l);
- return true;
+ SCM text = event_->get_property ("text");
+
+ if (ly_is_equal (text, scm_makfrom0str (" ")))
+ {
+ if (last_text_)
+ last_text_->set_property ("self-alignment-X", scm_from_int (LEFT));
+ }
+ else
+ {
+ text_ = make_item ("LyricText", event_->self_scm ());
+ }
}
- return false;
}
-void
-Lyric_engraver::do_process_requests()
+Context *
+get_voice_to_lyrics (Context *lyrics)
{
- if (text_p_arr_.size ())
- return;
+ SCM avc = lyrics->get_property ("associatedVoiceContext");
+ if (Context *c = unsmob_context (avc))
+ return c;
+
+ SCM voice_name = lyrics->get_property ("associatedVoice");
+ string nm = lyrics->id_string ();
+
+ if (scm_is_string (voice_name))
+ nm = ly_scm2string (voice_name);
+ else
+ {
+ ssize idx = nm.rfind ('-');
+ if (idx != NPOS)
+ nm = nm.substr (0, idx);
+ }
- for (int i=0; i < lyric_req_l_arr_.size (); i++)
+ Context *parent = lyrics;
+ Context *voice = 0;
+ while (parent && !voice)
{
- Lyric_req* request_l = lyric_req_l_arr_[i];
- G_text_item* item_p = new G_text_item;
- item_p->text_str_ = request_l->text_str_;
-
- Scalar style = get_property ("textstyle", 0);
- if (style.length_i ())
- item_p->style_str_ = style;
- // urg, when/how can one get the height of this thing?
- item_p->translate (Offset (0, - i * 12 PT));
-
- text_p_arr_.push (item_p);
- announce_element (Score_element_info (item_p, request_l));
+ voice = find_context_below (parent, ly_symbol2scm ("Voice"), nm);
+ parent = parent->get_parent_context ();
}
+
+ if (voice)
+ return voice;
+
+ parent = lyrics;
+ voice = 0;
+ while (parent && !voice)
+ {
+ voice = find_context_below (parent, ly_symbol2scm ("Voice"), "");
+ parent = parent->get_parent_context ();
+ }
+
+ return voice;
+}
+
+Grob *
+get_current_note_head (Context *voice)
+{
+ for (SCM s = voice->get_property ("busyGrobs");
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ Item *g = dynamic_cast<Item *> (unsmob_grob (scm_cdar (s)));
+
+ if (g && !g->get_column ()
+ && Note_head::has_interface (g))
+ return g;
+ }
+
+ return 0;
}
void
-Lyric_engraver::do_pre_move_processing()
+Lyric_engraver::stop_translation_timestep ()
{
- for (int i=0; i < text_p_arr_.size (); i++)
+ if (text_)
{
- typeset_element (text_p_arr_[i]);
+ Context *voice = get_voice_to_lyrics (context ());
+
+ if (voice)
+ {
+ Grob *head = get_current_note_head (voice);
+
+ if (head)
+ {
+ text_->set_parent (head, X_AXIS);
+ if (melisma_busy (voice))
+ text_->set_property ("self-alignment-X", scm_from_int (LEFT));
+ }
+ }
+
+ last_text_ = text_;
+ text_ = 0;
}
- text_p_arr_.clear ();
- lyric_req_l_arr_.clear ();
+ event_ = 0;
}
+ADD_TRANSLATOR (Lyric_engraver,
+ /* doc */ "",
+ /* create */ "LyricText",
+ /* read */ "",
+ /* write */ "");