X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-engraver.cc;h=917d2db3c1193b258892b7d42d4976f85ee153be;hb=30a7c603fa9977c1a4a68868475d465e8f7132ca;hp=43f7cbecbeee038fc1009e7587402057195a4622;hpb=321cc8ec6586cadfda33dc650198f83906008d36;p=lilypond.git diff --git a/lily/beam-engraver.cc b/lily/beam-engraver.cc index 43f7cbecbe..917d2db3c1 100644 --- a/lily/beam-engraver.cc +++ b/lily/beam-engraver.cc @@ -1,14 +1,12 @@ -/* - beam-engraver.cc -- implement Beam_engraver - +/* + beam-engraver.cc -- implement Beam_engraver + source file of the GNU LilyPond music typesetter - - (c) 1998--2003 Han-Wen Nienhuys - - */ -#include "engraver-group-engraver.hh" + + (c) 1998--2005 Han-Wen Nienhuys +*/ + #include "engraver.hh" -#include "event.hh" #include "beam.hh" #include "stem.hh" #include "warn.hh" @@ -18,20 +16,21 @@ #include "drul-array.hh" #include "item.hh" #include "spanner.hh" +#include "context.hh" class Beam_engraver : public Engraver { -protected: - Drul_array evs_drul_; - +protected: + Music *start_ev_; + Spanner *finished_beam_; Spanner *beam_; - Music * prev_start_ev_; + Music *prev_start_ev_; + + Music *now_stop_ev_; - Music * now_stop_ev_; - - Beaming_info_list * beam_info_; - Beaming_info_list * finished_beam_info_; + Beaming_info_list *beam_info_; + Beaming_info_list *finished_beam_info_; /// location within measure where beam started. Moment beam_start_location_; @@ -46,28 +45,27 @@ protected: void set_melisma (bool); Moment last_stem_added_at_; - virtual void stop_translation_timestep (); + virtual void stop_translation_timestep (); virtual void start_translation_timestep (); virtual void finalize (); virtual void acknowledge_grob (Grob_info); - virtual bool try_music (Music*); + virtual bool try_music (Music *); virtual void process_music (); - virtual bool valid_start_moment(); - virtual bool valid_end_moment (); - + virtual bool valid_start_point (); + virtual bool valid_end_point (); + public: - TRANSLATOR_DECLARATIONS( Beam_engraver ); + TRANSLATOR_DECLARATIONS (Beam_engraver); }; - /* Hmm. this isn't necessary, since grace beams and normal beams are always nested. - */ +*/ bool -Beam_engraver::valid_start_moment() +Beam_engraver::valid_start_point () { Moment n = now_mom (); @@ -75,47 +73,38 @@ Beam_engraver::valid_start_moment() } bool -Beam_engraver::valid_end_moment() +Beam_engraver::valid_end_point () { - return last_stem_added_at_.grace_part_ == Rational(0); + return valid_start_point (); } - Beam_engraver::Beam_engraver () { beam_ = 0; - finished_beam_ =0; - finished_beam_info_=0; - beam_info_ =0; + finished_beam_ = 0; + finished_beam_info_ = 0; + beam_info_ = 0; now_stop_ev_ = 0; - evs_drul_[LEFT] = evs_drul_[RIGHT] =0; - prev_start_ev_ =0; + start_ev_ = 0; + prev_start_ev_ = 0; } bool Beam_engraver::try_music (Music *m) { - if (m->is_mus_type ("abort-event")) + if (m->is_mus_type ("beam-event")) { - evs_drul_[START] = 0; - evs_drul_[STOP] = 0; - if (beam_) - beam_->suicide (); - beam_ = 0; - } - else if (m->is_mus_type ("beam-event")) - { - Direction d = to_dir (m->get_mus_property ("span-direction")); - if (d == START && !valid_start_moment ()) + Direction d = to_dir (m->get_property ("span-direction")); + if (d == START && !valid_start_point ()) return false; - if (d == STOP && !valid_end_moment ()) + if (d == STOP && !valid_end_point ()) return false; if (d == START) { - evs_drul_[d] = m; + start_ev_ = m; } - else if (d==STOP) + else if (d == STOP) { now_stop_ev_ = m; } @@ -129,64 +118,49 @@ Beam_engraver::set_melisma (bool ml) { SCM b = get_property ("autoBeaming"); if (!to_boolean (b)) - daddy_trans_->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T :SCM_BOOL_F); + context ()->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T : SCM_BOOL_F); } void Beam_engraver::process_music () { - if (evs_drul_[STOP]) - { - prev_start_ev_ =0; - finished_beam_ = beam_; - finished_beam_info_ = beam_info_; - - beam_info_ =0; - beam_ = 0; - } - if (beam_ && !to_boolean (get_property ("allowBeamBreak"))) { - top_engraver ()->forbid_breaks (); + get_score_engraver ()->forbid_breaks (); } - if (evs_drul_[START]) + if (start_ev_) { if (beam_) { - evs_drul_[START]->origin ()->warning (_ ("already have a beam")); + start_ev_->origin ()->warning (_ ("already have a beam")); return; } set_melisma (true); - prev_start_ev_ = evs_drul_[START]; - beam_ = new Spanner (get_property ("Beam")); - SCM smp = get_property ("measurePosition"); - Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0); + prev_start_ev_ = start_ev_; + beam_ = make_spanner ("Beam", start_ev_->self_scm ()); + Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0))); beam_start_location_ = mp; beam_start_mom_ = now_mom (); - + beam_info_ = new Beaming_info_list; - + /* urg, must copy to Auto_beam_engraver too */ - - announce_grob(beam_, evs_drul_[START]->self_scm()); } - } - void Beam_engraver::typeset_beam () { if (finished_beam_) { - finished_beam_info_->beamify(beat_length_, subdivide_beams_); + finished_beam_info_->beamify (beat_length_, subdivide_beams_); Beam::set_beaming (finished_beam_, finished_beam_info_); - typeset_grob (finished_beam_); + delete finished_beam_info_; - finished_beam_info_ =0; + finished_beam_info_ = 0; finished_beam_ = 0; } } @@ -194,15 +168,14 @@ Beam_engraver::typeset_beam () void Beam_engraver::start_translation_timestep () { - evs_drul_ [START] =0; - evs_drul_[STOP] = 0; - + start_ev_ = 0; + if (beam_) { set_melisma (true); - - subdivide_beams_ = to_boolean(get_property("subdivideBeams")); - beat_length_ = *unsmob_moment (get_property ("beatLength")); + + subdivide_beams_ = to_boolean (get_property ("subdivideBeams")); + beat_length_ = robust_scm2moment (get_property ("beatLength"), Moment (1, 4)); } } @@ -210,7 +183,7 @@ void Beam_engraver::stop_translation_timestep () { typeset_beam (); - if (now_stop_ev_ ) + if (now_stop_ev_) { finished_beam_ = beam_; finished_beam_info_ = beam_info_; @@ -218,8 +191,8 @@ Beam_engraver::stop_translation_timestep () now_stop_ev_ = 0; beam_ = 0; beam_info_ = 0; - typeset_beam(); - set_melisma (false); + typeset_beam (); + set_melisma (false); } } @@ -244,22 +217,22 @@ Beam_engraver::acknowledge_grob (Grob_info info) { if (beam_) { - if (Rest::has_interface (info.grob_)) + if (Rest::has_interface (info.grob ())) { - info.grob_->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS); + info.grob ()->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS); } - else if (Stem::has_interface (info.grob_)) + else if (Stem::has_interface (info.grob ())) { - Moment now = now_mom(); + Moment now = now_mom (); + + if (!valid_start_point ()) + return; - if (!valid_start_moment ()) - return ; - - Item *stem = dynamic_cast (info.grob_); + Item *stem = dynamic_cast (info.grob ()); if (Stem::get_beam (stem)) return; - Music* m = info.music_cause(); + Music *m = info.music_cause (); if (!m->is_mus_type ("rhythmic-event")) { String s = _ ("stem must have Rhythmic structure"); @@ -267,13 +240,12 @@ Beam_engraver::acknowledge_grob (Grob_info info) info.music_cause ()->origin ()->warning (s); else ::warning (s); - + return; } - last_stem_added_at_ = now; - int durlog = unsmob_duration (m->get_mus_property ("duration"))-> duration_log (); + int durlog = unsmob_duration (m->get_property ("duration"))->duration_log (); if (durlog <= 2) { m->origin ()->warning (_ ("stem doesn't fit in beam")); @@ -285,69 +257,60 @@ Beam_engraver::acknowledge_grob (Grob_info info) */ } - stem->set_grob_property ("duration-log", - scm_int2num (durlog)); + stem->set_property ("duration-log", + scm_int2num (durlog)); Moment stem_location = now - beam_start_mom_ + beam_start_location_; beam_info_->add_stem (stem_location, - (durlog- 2) >? 0); + max (durlog- 2, 0)); Beam::add_stem (beam_, stem); } } } - - - - -ENTER_DESCRIPTION(Beam_engraver, -/* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will be " -"printed with flags instead of beams.", -/* creats*/ "Beam", -/* accepts */ "beam-event abort-event", -/* acks */ "stem-interface rest-interface", -/* reads */ "beamMelismaBusy beatLength subdivideBeams", -/* write */ ""); - +ADD_TRANSLATOR (Beam_engraver, + /* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will be " + "printed with flags instead of beams.", + /* creats*/ "Beam", + /* accepts */ "beam-event", + /* acks */ "stem-interface rest-interface", + /* reads */ "beamMelismaBusy beatLength subdivideBeams", + /* write */ ""); class Grace_beam_engraver : public Beam_engraver { public: - TRANSLATOR_DECLARATIONS(Grace_beam_engraver); + TRANSLATOR_DECLARATIONS (Grace_beam_engraver); protected: - virtual bool valid_start_moment(); - virtual bool valid_end_moment (); + virtual bool valid_start_point (); + virtual bool valid_end_point (); }; -Grace_beam_engraver::Grace_beam_engraver() +Grace_beam_engraver::Grace_beam_engraver () { } bool -Grace_beam_engraver::valid_start_moment() +Grace_beam_engraver::valid_start_point () { Moment n = now_mom (); return n.grace_part_ != Rational (0); } - bool -Grace_beam_engraver::valid_end_moment () +Grace_beam_engraver::valid_end_point () { - return beam_ && last_stem_added_at_.grace_part_ != Rational(0); + return beam_ && valid_start_point (); } - - -ENTER_DESCRIPTION(Grace_beam_engraver, -/* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will " -"be printed with flags instead of beams. Only engraves beams when we " -" are at grace points in time. " -, -/* creats*/ "Beam", -/* accepts */ "beam-event abort-event", -/* acks */ "stem-interface rest-interface", -/* reads */ "beamMelismaBusy beatLength allowBeamBreak subdivideBeams", -/* write */ ""); +ADD_TRANSLATOR (Grace_beam_engraver, + /* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will " + "be printed with flags instead of beams. Only engraves beams when we " + " are at grace points in time. ", + /* creats*/ "Beam", + /* accepts */ "beam-event", + /* acks */ "stem-interface rest-interface", + /* reads */ "beamMelismaBusy beatLength allowBeamBreak subdivideBeams", + /* write */ "");