source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "engraver.hh"
-#include "event.hh"
-#include "item.hh"
#include "context.hh"
+#include "engraver.hh"
#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.
+ 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
+*/
+class Lyric_engraver : public Engraver
{
protected:
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
- virtual void process_music ();
-
+ void stop_translation_timestep ();
+ void process_music ();
+ DECLARE_TRANSLATOR_LISTENER (lyric);
+
public:
TRANSLATOR_DECLARATIONS (Lyric_engraver);
+
private:
- Music * event_;
- Item* text_;
+ Stream_event *event_;
+ Item *text_;
+ Item *last_text_;
- Context* get_voice_context ();
+ Context *get_voice_context ();
};
Lyric_engraver::Lyric_engraver ()
{
- text_ =0;
- event_ =0;
+ text_ = 0;
+ last_text_ = 0;
+ event_ = 0;
}
-bool
-Lyric_engraver::try_music (Music*r)
+IMPLEMENT_TRANSLATOR_LISTENER (Lyric_engraver, lyric);
+void
+Lyric_engraver::listen_lyric (Stream_event *ev)
{
- if (r->is_mus_type ("lyric-event"))
- {
- if (event_)
- return false;
- event_ =r;
- return true;
- }
- return false;
+ ASSIGN_EVENT_ONCE (event_, ev);
}
void
{
if (event_)
{
- text_= make_item ("LyricText");
-
- text_->set_property ("text", event_->get_property ("text"));
- announce_grob (text_, event_->self_scm ());
+ 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 ());
+ text_->set_property ("text", text);
+ }
}
}
-
-Context*
+Context *
get_voice_to_lyrics (Context *lyrics)
{
SCM avc = lyrics->get_property ("associatedVoiceContext");
- if (Context *c = unsmob_context (avc))
+ if (Context *c = unsmob_context (avc))
return c;
SCM voice_name = lyrics->get_property ("associatedVoice");
- String nm = lyrics->id_string ();
+ string nm = lyrics->id_string ();
- if (ly_c_string_p (voice_name))
+ if (scm_is_string (voice_name))
nm = ly_scm2string (voice_name);
else
{
- int idx = nm.index_last ('-');
- if (idx >= 0)
- nm = nm.left_string (idx);
+ ssize idx = nm.rfind ('-');
+ if (idx != NPOS)
+ nm = nm.substr (0, idx);
}
Context *parent = lyrics;
- Context *voice = 0;
+ Context *voice = 0;
while (parent && !voice)
{
voice = find_context_below (parent, ly_symbol2scm ("Voice"), nm);
return voice;
parent = lyrics;
- voice = 0;
+ voice = 0;
while (parent && !voice)
{
voice = find_context_below (parent, ly_symbol2scm ("Voice"), "");
}
Grob *
-get_current_note_head (Context * voice)
+get_current_note_head (Context *voice)
{
for (SCM s = voice->get_property ("busyGrobs");
- ly_c_pair_p (s); s = ly_cdr (s))
+ scm_is_pair (s); s = scm_cdr (s))
{
- Item*g = dynamic_cast<Item*> (unsmob_grob (ly_cdar (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;
+
+ return 0;
}
void
{
if (text_)
{
- Context * voice = get_voice_to_lyrics (context ());
+ Context *voice = get_voice_to_lyrics (context ());
if (voice)
{
{
text_->set_parent (head, X_AXIS);
if (melisma_busy (voice))
- text_->set_property ("self-alignment-X", scm_int2num (LEFT));
+ text_->set_property ("self-alignment-X", scm_from_int (LEFT));
}
}
-
- typeset_grob (text_);
- text_ =0;
+
+ last_text_ = text_;
+ text_ = 0;
}
- event_ =0;
+ event_ = 0;
}
-
-ENTER_DESCRIPTION (Lyric_engraver,
-/* descr */ "",
-/* creats*/ "",
-/* accepts */ "lyric-event",
-/* acks */ "",
-/* reads */ "",
-/* write */ "");
+ADD_TRANSLATOR (Lyric_engraver,
+ /* doc */ "",
+ /* create */ "LyricText",
+ /* accept */ "lyric-event",
+ /* read */ "",
+ /* write */ "");