X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstem-engraver.cc;h=f8d19adcbe7a17e00de6223c90dbef15cb94c383;hb=c484fb1da7751d35734194e623cb823b559e190f;hp=08b598f1e2c215753903937d7acac5c76715b88d;hpb=a8651b61fa25aee299bbc846d180a942568d6075;p=lilypond.git diff --git a/lily/stem-engraver.cc b/lily/stem-engraver.cc index 08b598f1e2..f8d19adcbe 100644 --- a/lily/stem-engraver.cc +++ b/lily/stem-engraver.cc @@ -3,187 +3,183 @@ source file of the GNU LilyPond music typesetter - (c) 1997--2000 Han-Wen Nienhuys + (c) 1997--2004 Han-Wen Nienhuys */ #include "staff-symbol-referencer.hh" #include "rhythmic-head.hh" #include "stem.hh" -#include "musical-request.hh" +#include "event.hh" #include "misc.hh" #include "stem-tremolo.hh" - +#include "item.hh" #include "translator-group.hh" #include "engraver.hh" + + /** Make stems upon receiving noteheads. */ class Stem_engraver : public Engraver { - -public: - VIRTUAL_COPY_CONS (Translator); - Stem_engraver(); - + TRANSLATOR_DECLARATIONS(Stem_engraver); protected: - virtual void do_creation_processing (); - virtual void acknowledge_element (Score_element_info); - virtual void do_pre_move_processing (); - virtual bool do_try_music (Music*); + virtual void acknowledge_grob (Grob_info); + virtual void stop_translation_timestep (); + virtual bool try_music (Music*); private: - int default_tremolo_type_i_; - Stem *stem_p_; - Score_element *tremolo_p_; - Rhythmic_req *rhythmic_req_l_; - Tremolo_req* tremolo_req_l_; + Grob *stem_; + Grob *tremolo_; + Music *rhythmic_ev_; + Music* tremolo_ev_; }; -ADD_THIS_TRANSLATOR (Stem_engraver); - Stem_engraver::Stem_engraver () { - tremolo_req_l_ = 0; - stem_p_ = 0; - tremolo_p_ = 0; - default_tremolo_type_i_ = 16; - rhythmic_req_l_ =0; + tremolo_ev_ = 0; + stem_ = 0; + tremolo_ = 0; + rhythmic_ev_ =0; } -void -Stem_engraver::do_creation_processing () -{ - /* - huh, why only at creation time? - */ - SCM prop = get_property ("tremoloFlags"); - if (gh_number_p(prop)) - { - default_tremolo_type_i_ = gh_scm2int (prop); - } -} void -Stem_engraver::acknowledge_element(Score_element_info i) +Stem_engraver::acknowledge_grob (Grob_info i) { - if (Rhythmic_head * h = dynamic_cast (i.elem_l_)) + Grob* h = i.grob_; + if (Rhythmic_head::has_interface (h)) { - if (h->stem_l ()) + if (Rhythmic_head::get_stem (h)) return; + + /* Reverted to the old method so chord tremolos work again. /MB + */ + int duration_log = 0; + + Music * m = i.music_cause (); + if (m->is_mus_type ("rhythmic-event")) + duration_log = unsmob_duration (m->get_mus_property ("duration"))-> duration_log (); - Rhythmic_req * r = dynamic_cast (i.req_l_); - int duration_log = r->duration_.durlog_i_; - if (!stem_p_) + if (!stem_) { - stem_p_ = new Stem (get_property ("basicStemProperties")); - Staff_symbol_referencer_interface::set_interface(stem_p_); + stem_ = make_item ("Stem"); - - stem_p_->set_elt_property ("duration-log", gh_int2scm (duration_log)); + stem_->set_grob_property ("duration-log", gh_int2scm (duration_log)); - if (tremolo_req_l_) + if (tremolo_ev_) { /* Stem tremolo is never applied to a note by default, - is must me requested. But there is a default for the + is must me evuested. But there is a default for the tremolo value: c4:8 c c: the first and last (quarter) note bothe get one tremolo flag. */ - int requested_type = tremolo_req_l_->type_i_; + int requested_type = gh_scm2int (tremolo_ev_->get_mus_property ("tremolo-type")); + SCM f = get_property ("tremoloFlags"); if (!requested_type) - requested_type = default_tremolo_type_i_; + if (gh_number_p (f)) + requested_type = gh_scm2int (f); + else + requested_type = 8; else - default_tremolo_type_i_ = requested_type; + daddy_trans_->set_property ("tremoloFlags", gh_int2scm (requested_type)); + + int tremolo_flags = intlog2 (requested_type) - 2 + - (duration_log > 2 ? duration_log - 2 : 0); + if (tremolo_flags <= 0) + { + tremolo_ev_->origin()->warning (_("tremolo duration is too long")); + tremolo_flags = 0; + } - if (requested_type) + if (tremolo_flags) { - tremolo_p_ = new Item (get_property ("basicStemTremoloProperties")); - Stem_tremolo::set_interface (tremolo_p_); + tremolo_ = make_item ("StemTremolo"); + announce_grob(tremolo_, tremolo_ev_->self_scm()); - announce_element (Score_element_info (tremolo_p_, tremolo_req_l_)); /* The number of tremolo flags is the number of flags of the tremolo-type minus the number of flags of the note itself. */ - int tremolo_flags = intlog2 (requested_type) - 2 - - (duration_log > 2 ? duration_log - 2 : 0); - if (tremolo_flags < 0) - tremolo_flags = 0; - tremolo_p_->set_elt_property ("tremolo-flags", - gh_int2scm (tremolo_flags)); + tremolo_->set_grob_property ("flag-count", + gh_int2scm (tremolo_flags)); + tremolo_->set_parent (stem_, X_AXIS); + stem_->set_grob_property ("tremolo-flag", tremolo_->self_scm ()); } } - announce_element (Score_element_info (stem_p_, r)); + + /* + We announce the cause of the head as cause of the stem. + The stem needs a rhythmic structure to fit it into a beam. */ + announce_grob(stem_, i.music_cause ()->self_scm()); } - if (stem_p_->flag_i () != duration_log) + if (Stem::duration_log (stem_) != duration_log) { - r->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << stem_p_->flag_i ())); + i.music_cause ()->origin ()->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << Stem::duration_log (stem_)) + + _f ("Don't you want polyphonic voices instead?") + ); } - stem_p_->add_head (h); + Stem::add_head (stem_,h); } } void -Stem_engraver::do_pre_move_processing() +Stem_engraver::stop_translation_timestep () { - if (tremolo_p_) + if (tremolo_) { - Stem_tremolo::set_stem (tremolo_p_, stem_p_); - typeset_element (tremolo_p_); - tremolo_p_ = 0; + Stem_tremolo::set_stem (tremolo_, stem_); + typeset_grob (tremolo_); + tremolo_ = 0; } - if (stem_p_) + if (stem_) { SCM prop = get_property ("stemLeftBeamCount"); - if (gh_number_p(prop)) + if (gh_number_p (prop)) { - stem_p_->set_beaming (gh_scm2int (prop),LEFT); - daddy_trans_l_->set_property ("stemLeftBeamCount", SCM_UNDEFINED); + Stem::set_beaming (stem_,gh_scm2int (prop),LEFT); + daddy_trans_->unset_property (ly_symbol2scm ("stemLeftBeamCount")); } prop = get_property ("stemRightBeamCount"); - if (gh_number_p(prop)) - { - stem_p_->set_beaming (gh_scm2int (prop), RIGHT); - daddy_trans_l_->set_property ("stemRightBeamCount", SCM_UNDEFINED); - } - - - // UGH. Should mark non-forced instead. - - /* - aargh: I don't get it. direction is being set (and then set - to forced), if we have a Chord_tremolo. - */ - SCM dir = stem_p_->get_elt_property ("direction"); - if (gh_number_p (dir) && to_dir(dir)) + if (gh_number_p (prop)) { - stem_p_->set_elt_property ("dir-forced", SCM_BOOL_T); + Stem::set_beaming (stem_,gh_scm2int (prop), RIGHT); + daddy_trans_->unset_property (ly_symbol2scm ("stemRightBeamCount")); } - typeset_element(stem_p_); - stem_p_ = 0; + typeset_grob (stem_); + stem_ = 0; } - tremolo_req_l_ = 0; + tremolo_ev_ = 0; } bool -Stem_engraver::do_try_music (Music* r) +Stem_engraver::try_music (Music* r) { - if (Tremolo_req* a = dynamic_cast (r)) + if (r->is_mus_type ("tremolo-event")) { - tremolo_req_l_ = a; + tremolo_ev_ = r; return true; } return false; } +ENTER_DESCRIPTION(Stem_engraver, +/* descr */ "Create stems and single-stem tremolos. It also works together with " +"the beam engraver for overriding beaming.", +/* creats*/ "Stem StemTremolo", +/* accepts */ "tremolo-event", +/* acks */ "rhythmic-head-interface", +/* reads */ "tremoloFlags stemLeftBeamCount stemRightBeamCount", +/* write */ "");