X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-engraver.cc;h=f252eea5e2a1037c715ac72ef3aaf700bea8a0c0;hb=97a0169312a260933246ab224e4f8b0969871dd5;hp=22cf46cfb560714761ba7976228257d0b40ddbdb;hpb=634ad74db688a5305f001917453c5cd15305c539;p=lilypond.git diff --git a/lily/beam-engraver.cc b/lily/beam-engraver.cc index 22cf46cfb5..f252eea5e2 100644 --- a/lily/beam-engraver.cc +++ b/lily/beam-engraver.cc @@ -1,37 +1,60 @@ -/* - beam-engraver.cc -- implement Beam_engraver - - source file of the GNU LilyPond music typesetter - - (c) 1998--2005 Han-Wen Nienhuys - - */ +/* + This file is part of LilyPond, the GNU music typesetter. + + Copyright (C) 1998--2015 Han-Wen Nienhuys + + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . +*/ -#include "engraver.hh" #include "beam.hh" -#include "stem.hh" -#include "warn.hh" -#include "beaming.hh" -#include "score-engraver.hh" -#include "rest.hh" +#include "beaming-pattern.hh" +#include "context.hh" +#include "directional-element-interface.hh" #include "drul-array.hh" +#include "duration.hh" +#include "engraver.hh" +#include "international.hh" #include "item.hh" +#include "rest.hh" #include "spanner.hh" -#include "context.hh" +#include "stream-event.hh" +#include "stem.hh" +#include "unpure-pure-container.hh" +#include "warn.hh" + +#include "translator.icc" class Beam_engraver : public Engraver { -protected: - Music * start_ev_; - +public: + void acknowledge_stem (Grob_info); + void acknowledge_rest (Grob_info); + void listen_beam (Stream_event *); + +protected: + Stream_event *start_ev_; + Spanner *finished_beam_; Spanner *beam_; - Music * prev_start_ev_; + Stream_event *prev_start_ev_; + + Stream_event *stop_ev_; - Music * now_stop_ev_; - - Beaming_info_list * beam_info_; - Beaming_info_list * finished_beam_info_; + Direction forced_direction_; + + Beaming_pattern *beam_info_; + Beaming_pattern *finished_beam_info_; /// location within measure where beam started. Moment beam_start_location_; @@ -39,33 +62,30 @@ protected: /// moment (global time) where beam started. Moment beam_start_mom_; - bool subdivide_beams_; - Moment beat_length_; + Beaming_options beaming_options_; + Beaming_options finished_beaming_options_; void typeset_beam (); void set_melisma (bool); Moment last_stem_added_at_; - virtual void stop_translation_timestep (); - virtual void start_translation_timestep (); + void stop_translation_timestep (); + void start_translation_timestep (); virtual void finalize (); - virtual void acknowledge_grob (Grob_info); - virtual bool try_music (Music*); - virtual void process_music (); + void process_music (); virtual bool valid_start_point (); virtual bool valid_end_point (); - + public: TRANSLATOR_DECLARATIONS (Beam_engraver); }; - /* Hmm. this isn't necessary, since grace beams and normal beams are always nested. - */ +*/ bool Beam_engraver::valid_start_point () { @@ -80,39 +100,34 @@ Beam_engraver::valid_end_point () return valid_start_point (); } -Beam_engraver::Beam_engraver () +Beam_engraver::Beam_engraver (Context *c) + : Engraver (c) { beam_ = 0; finished_beam_ = 0; finished_beam_info_ = 0; beam_info_ = 0; - now_stop_ev_ = 0; + forced_direction_ = CENTER; + stop_ev_ = 0; start_ev_ = 0; prev_start_ev_ = 0; } -bool -Beam_engraver::try_music (Music *m) +void +Beam_engraver::listen_beam (Stream_event *ev) { - if (m->is_mus_type ("beam-event")) + Direction d = to_dir (ev->get_property ("span-direction")); + + if (d == START && valid_start_point ()) { - Direction d = to_dir (m->get_property ("span-direction")); - if (d == START && !valid_start_point ()) - return false; - if (d == STOP && !valid_end_point ()) - return false; - - if (d == START) - { - start_ev_ = m; - } - else if (d == STOP) - { - now_stop_ev_ = m; - } - return true; + ASSIGN_EVENT_ONCE (start_ev_, ev); + + Direction updown = to_dir (ev->get_property ("direction")); + if (updown) + forced_direction_ = updown; } - return false; + else if (d == STOP && valid_end_point ()) + ASSIGN_EVENT_ONCE (stop_ev_, ev); } void @@ -120,52 +135,68 @@ Beam_engraver::set_melisma (bool ml) { SCM b = get_property ("autoBeaming"); if (!to_boolean (b)) - context ()->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 (beam_ && !to_boolean (get_property ("allowBeamBreak"))) - { - get_score_engraver ()->forbid_breaks (); - } - if (start_ev_) { if (beam_) - { - start_ev_->origin ()->warning (_ ("already have a beam")); - return; - } + { + start_ev_->origin ()->warning (_ ("already have a beam")); + return; + } set_melisma (true); prev_start_ev_ = start_ev_; beam_ = make_spanner ("Beam", start_ev_->self_scm ()); - Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0))); + + Moment mp (robust_scm2moment (get_property ("measurePosition"), + Moment (0))); beam_start_location_ = mp; beam_start_mom_ = now_mom (); - - beam_info_ = new Beaming_info_list; - + + beaming_options_.from_context (context ()); + beam_info_ = new Beaming_pattern; /* urg, must copy to Auto_beam_engraver too */ } -} + typeset_beam (); + if (stop_ev_ && beam_) + { + announce_end_grob (beam_, stop_ev_->self_scm ()); + } +} void Beam_engraver::typeset_beam () { if (finished_beam_) { - finished_beam_info_->beamify (beat_length_, subdivide_beams_); + Grob *stem = finished_beam_->get_bound (RIGHT); + if (!stem) + { + stem = finished_beam_->get_bound (LEFT); + if (stem) + finished_beam_->set_bound (RIGHT, stem); + } + + if (stem && forced_direction_) + set_grob_direction (stem, forced_direction_); + + forced_direction_ = CENTER; + finished_beam_info_->beamify (finished_beaming_options_); + Beam::set_beaming (finished_beam_, finished_beam_info_); - + delete finished_beam_info_; finished_beam_info_ = 0; finished_beam_ = 0; + } } @@ -173,26 +204,21 @@ void Beam_engraver::start_translation_timestep () { start_ev_ = 0; - + if (beam_) - { - set_melisma (true); - - subdivide_beams_ = to_boolean (get_property ("subdivideBeams")); - beat_length_ = robust_scm2moment (get_property ("beatLength"), Moment (1, 4)); - } + set_melisma (true); } void Beam_engraver::stop_translation_timestep () { - typeset_beam (); - if (now_stop_ev_ ) + if (stop_ev_) { finished_beam_ = beam_; finished_beam_info_ = beam_info_; + finished_beaming_options_ = beaming_options_; - now_stop_ev_ = 0; + stop_ev_ = 0; beam_ = 0; beam_info_ = 0; typeset_beam (); @@ -209,94 +235,123 @@ Beam_engraver::finalize () prev_start_ev_->origin ()->warning (_ ("unterminated beam")); /* - we don't typeset it, (we used to, but it was commented - out. Reason unknown) */ + we don't typeset it, (we used to, but it was commented + out. Reason unknown) */ beam_->suicide (); delete beam_info_; } } void -Beam_engraver::acknowledge_grob (Grob_info info) +Beam_engraver::acknowledge_rest (Grob_info info) { - if (beam_) + if (beam_ + && !scm_is_number (info.grob ()->get_property_data ("staff-position"))) + chain_offset_callback (info.grob (), + Unpure_pure_container::make_smob + (Beam::rest_collision_callback_proc, + Beam::pure_rest_collision_callback_proc), + Y_AXIS); +} + +void +Beam_engraver::acknowledge_stem (Grob_info info) +{ + if (!beam_) + return; + + Moment now = now_mom (); + if (!valid_start_point ()) + return; + + // It's suboptimal that we don't support callbacks returning ##f, + // but this makes beams have no effect on "stems" reliably in + // TabStaff when \tabFullNotation is switched off: the real stencil + // callback for beams is called quite late in the process, and we + // don't want to trigger it early. + if (scm_is_false (beam_->get_property_data ("stencil"))) + return; + + Item *stem = dynamic_cast (info.grob ()); + if (Stem::get_beam (stem)) + return; + + Stream_event *ev = info.ultimate_event_cause (); + if (!ev->in_event_class ("rhythmic-event")) { - if (Rest::has_interface (info.grob_)) - { - info.grob_->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS); - } - else if (Stem::has_interface (info.grob_)) - { - Moment now = now_mom (); - - if (!valid_start_point ()) - return ; - - Item *stem = dynamic_cast (info.grob_); - if (Stem::get_beam (stem)) - return; - - Music* m = info.music_cause (); - if (!m->is_mus_type ("rhythmic-event")) - { - String s = _ ("stem must have Rhythmic structure"); - if (info.music_cause ()) - info.music_cause ()->origin ()->warning (s); - else - ::warning (s); - - return; - } - - - last_stem_added_at_ = now; - int durlog = unsmob_duration (m->get_property ("duration"))-> duration_log (); - if (durlog <= 2) - { - m->origin ()->warning (_ ("stem doesn't fit in beam")); - prev_start_ev_->origin ()->warning (_ ("beam was started here")); - /* - don't return, since - - [r4 c8] can just as well be modern notation. - */ - } - - 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); - Beam::add_stem (beam_, stem); - } + info.grob ()->warning (_ ("stem must have Rhythmic structure")); + return; } -} + last_stem_added_at_ = now; + Duration *stem_duration = unsmob (ev->get_property ("duration")); + int durlog = stem_duration->duration_log (); + //int durlog = unsmob (ev->get_property ("duration"))->duration_log (); + if (durlog <= 2) + { + ev->origin ()->warning (_ ("stem does not fit in beam")); + prev_start_ev_->origin ()->warning (_ ("beam was started here")); + /* + don't return, since + [r4 c8] can just as well be modern notation. + */ + } + if (forced_direction_) + set_grob_direction (stem, forced_direction_); + + stem->set_property ("duration-log", scm_from_int (durlog)); + Moment stem_location = now - beam_start_mom_ + beam_start_location_; + beam_info_->add_stem (stem_location, + max (durlog - 2, 0), + Stem::is_invisible (stem), + stem_duration->factor (), + (to_boolean (stem->get_property ("tuplet-start")))); + Beam::add_stem (beam_, stem); +} + + +void +Beam_engraver::boot () +{ + ADD_LISTENER (Beam_engraver, beam); + ADD_ACKNOWLEDGER (Beam_engraver, stem); + ADD_ACKNOWLEDGER (Beam_engraver, rest); +} 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 */ ""); + /* doc */ + "Handle @code{Beam} events by engraving beams. If omitted," + " then notes are printed with flags instead of beams.", + + /* create */ + "Beam ", + /* read */ + "baseMoment " + "beamMelismaBusy " + "beatStructure " + "subdivideBeams ", + + /* write */ + "forbidBreak" + ); class Grace_beam_engraver : public Beam_engraver { public: - TRANSLATOR_DECLARATIONS (Grace_beam_engraver); + TRANSLATOR_DECLARATIONS (Grace_beam_engraver); + TRANSLATOR_INHERIT (Beam_engraver); protected: virtual bool valid_start_point (); virtual bool valid_end_point (); }; -Grace_beam_engraver::Grace_beam_engraver () +Grace_beam_engraver::Grace_beam_engraver (Context *c) + : Beam_engraver (c) { } @@ -308,23 +363,36 @@ Grace_beam_engraver::valid_start_point () return n.grace_part_ != Rational (0); } - bool Grace_beam_engraver::valid_end_point () { return beam_ && valid_start_point (); } - +void +Grace_beam_engraver::boot () +{ + ADD_LISTENER (Grace_beam_engraver, beam); + ADD_ACKNOWLEDGER (Grace_beam_engraver, stem); + ADD_ACKNOWLEDGER (Grace_beam_engraver, rest); +} 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 */ ""); + /* doc */ + "Handle @code{Beam} events by engraving beams. If omitted," + " then notes are printed with flags instead of beams. Only" + " engraves beams when we are at grace points in time.", + + /* create */ + "Beam ", + + /* read */ + "baseMoment " + "beamMelismaBusy " + "beatStructure " + "subdivideBeams ", + + /* write */ + "" + );