X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fextender-engraver.cc;h=af1ae8503e7eedaf397c702320004189ca10a67f;hb=5c9c9c0ae6cd4bed8f7a2c62b2c014f3659a188a;hp=5c893207eedcbd211b994948454bd97d6e63dd04;hpb=9b40d66187029df3dca86fc5ecc65f64db315a48;p=lilypond.git diff --git a/lily/extender-engraver.cc b/lily/extender-engraver.cc index 5c893207ee..af1ae8503e 100644 --- a/lily/extender-engraver.cc +++ b/lily/extender-engraver.cc @@ -1,145 +1,169 @@ /* extender-engraver.cc -- implement Extender_engraver - (c) 1999 Glen Prideaux , - Han-Wen Nienhuys, Jan Nieuwenhuizen. - + source file of the GNU LilyPond music typesetter + + (c) 1999--2008 Glen Prideaux , + Han-Wen Nienhuys , + Jan Nieuwenhuizen */ -#include "flower-proto.hh" -#include "musical-request.hh" -#include "lyric-extender.hh" -#include "paper-column.hh" -#include "item.hh" +#include "context.hh" #include "engraver.hh" -#include "drul-array.hh" +#include "international.hh" +#include "item.hh" #include "lyric-extender.hh" -#include "pqueue.hh" +#include "note-head.hh" +#include "pointer-group-interface.hh" +#include "stream-event.hh" +#include "warn.hh" +#include "spanner.hh" +#include "translator.icc" -/** - Generate an centred extender. Should make a Extender_spanner that - typesets a nice centred extender of varying length depending on the - gap between syllables. +void completize_extender (Spanner *sp); - We remember the last Item that come across. When we get a - request, we create the spanner, and attach the left point to the - last lyrics, and the right point to any lyrics we receive by - then. */ class Extender_engraver : public Engraver { - Score_element *last_lyric_l_; - Score_element *current_lyric_l_; - Extender_req* req_l_; - Spanner* extender_p_; + Stream_event *ev_; + Spanner *extender_; + Spanner *pending_extender_; + public: - Extender_engraver (); - VIRTUAL_COPY_CONS (Translator); + TRANSLATOR_DECLARATIONS (Extender_engraver); protected: - virtual void acknowledge_element (Score_element_info); - virtual void do_removal_processing(); - virtual void do_process_music(); - virtual bool do_try_music (Music*); - virtual void do_pre_move_processing(); - virtual void do_post_move_processing (); -private: - -}; + DECLARE_TRANSLATOR_LISTENER (extender); + DECLARE_ACKNOWLEDGER (lyric_syllable); + virtual void finalize (); -ADD_THIS_TRANSLATOR (Extender_engraver); + void stop_translation_timestep (); + void process_music (); +}; Extender_engraver::Extender_engraver () { - current_lyric_l_ = 0; - last_lyric_l_ = 0; - extender_p_ = 0; - req_l_ = 0; + extender_ = 0; + pending_extender_ = 0; + ev_ = 0; } +IMPLEMENT_TRANSLATOR_LISTENER (Extender_engraver, extender); void -Extender_engraver::acknowledge_element (Score_element_info i) +Extender_engraver::listen_extender (Stream_event *ev) { - // -> text_item - if (i.elem_l_->has_interface (ly_symbol2scm("text-item-interface"))) - - { - current_lyric_l_ = i.elem_l_; - if (extender_p_ - && !extender_p_->get_bound (RIGHT) - ) - { - Lyric_extender(extender_p_).set_textitem (RIGHT, dynamic_cast (i.elem_l_)); - } - } + ASSIGN_EVENT_ONCE (ev_, ev); } - -bool -Extender_engraver::do_try_music (Music* r) +void +Extender_engraver::process_music () { - if (Extender_req* p = dynamic_cast (r)) - { - if (req_l_) - return false; - - req_l_ = p; - return true; - } - return false; + if (ev_) + extender_ = make_spanner ("LyricExtender", ev_->self_scm ()); } void -Extender_engraver::do_removal_processing () +Extender_engraver::acknowledge_lyric_syllable (Grob_info i) { - if (extender_p_) + Item *item = i.item (); + if (extender_) + extender_->set_bound (LEFT, item); + + if (pending_extender_) { - req_l_->origin ()->warning (_ ("unterminated extender")); - extender_p_->set_bound(RIGHT, unsmob_element (get_property ("currentCommandColumn"))); + pending_extender_->set_object ("next", item->self_scm ()); + completize_extender (pending_extender_); + pending_extender_ = 0; } } void -Extender_engraver::do_process_music () +Extender_engraver::stop_translation_timestep () { - if (req_l_) + if (extender_ || pending_extender_) { - if (!last_lyric_l_) + Context *voice = get_voice_to_lyrics (context ()); + Grob *h = voice ? get_current_note_head (voice) : 0; + + if (h) + { + if (extender_) + { + Pointer_group_interface::add_grob (extender_, + ly_symbol2scm ("heads"), h); + } + + if (pending_extender_) + { + Pointer_group_interface::add_grob (pending_extender_, + ly_symbol2scm ("heads"), h); + } + } + else + { + if (pending_extender_ + && !get_property ("extendersOverRests")) + { + completize_extender (pending_extender_); + pending_extender_ = 0; + } + + } + if (extender_) { - req_l_->origin ()->warning (_ ("Nothing to connect extender to on the left. Ignoring extender request.")); - return; + pending_extender_ = extender_; + extender_ = 0; } - - extender_p_ = new Spanner (get_property ("LyricExtender")); + } + ev_ = 0; +} - Lyric_extender (extender_p_).set_textitem (LEFT, last_lyric_l_); - announce_element (extender_p_, req_l_); +void +completize_extender (Spanner *sp) +{ + if (!sp->get_bound (RIGHT)) + { + extract_item_set (sp, "heads", heads); + if (heads.size ()) + sp->set_bound (RIGHT, heads.back ()); } } - void -Extender_engraver::do_pre_move_processing () +Extender_engraver::finalize () { - if (extender_p_) + if (extender_) { - typeset_element (extender_p_); - extender_p_ = 0; + completize_extender (extender_); + + if (!extender_->get_bound (RIGHT)) + extender_->warning (_ ("unterminated extender")); + extender_ = 0; } - if (current_lyric_l_) + if (pending_extender_) { - last_lyric_l_ = current_lyric_l_; - current_lyric_l_ =0; + completize_extender (pending_extender_); + + if (!pending_extender_->get_bound (RIGHT)) + pending_extender_->warning (_ ("unterminated extender")); + pending_extender_ = 0; } } -void -Extender_engraver::do_post_move_processing () -{ - req_l_ = 0; -} +ADD_ACKNOWLEDGER (Extender_engraver, lyric_syllable); +ADD_TRANSLATOR (Extender_engraver, + /* doc */ + "Create lyric extenders.", + + /* create */ + "LyricExtender ", + /* read */ + "extendersOverRests ", + /* write */ + "" + );