X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-engraver.cc;h=04e571f68a953d0197908dc3a75386cd6e7eecc7;hb=91b09f395deb2fe41d877237c8060066d30acdd5;hp=51569b0e270b6582366f4e3cf0b7bb3412a97d9f;hpb=08445b3682bc8560d0c8a861415f6f6fd093e30d;p=lilypond.git diff --git a/lily/beam-engraver.cc b/lily/beam-engraver.cc index 51569b0e27..04e571f68a 100644 --- a/lily/beam-engraver.cc +++ b/lily/beam-engraver.cc @@ -1,14 +1,26 @@ /* - beam-engraver.cc -- implement Beam_engraver + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1998--2011 Han-Wen Nienhuys - (c) 1998--2007 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 "beam.hh" #include "beaming-pattern.hh" #include "context.hh" +#include "directional-element-interface.hh" #include "drul-array.hh" #include "duration.hh" #include "engraver.hh" @@ -37,6 +49,8 @@ protected: Stream_event *stop_ev_; + Direction forced_direction_; + Beaming_pattern *beam_info_; Beaming_pattern *finished_beam_info_; @@ -48,7 +62,7 @@ protected: Beaming_options beaming_options_; Beaming_options finished_beaming_options_; - + void typeset_beam (); void set_melisma (bool); @@ -91,6 +105,7 @@ Beam_engraver::Beam_engraver () finished_beam_ = 0; finished_beam_info_ = 0; beam_info_ = 0; + forced_direction_ = CENTER; stop_ev_ = 0; start_ev_ = 0; prev_start_ev_ = 0; @@ -103,7 +118,13 @@ Beam_engraver::listen_beam (Stream_event *ev) Direction d = to_dir (ev->get_property ("span-direction")); if (d == START && valid_start_point ()) - ASSIGN_EVENT_ONCE (start_ev_, ev); + { + ASSIGN_EVENT_ONCE (start_ev_, ev); + + Direction updown = to_dir (ev->get_property ("direction")); + if (updown) + forced_direction_ = updown; + } else if (d == STOP && valid_end_point ()) ASSIGN_EVENT_ONCE (stop_ev_, ev); } @@ -130,7 +151,9 @@ Beam_engraver::process_music () 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 (); @@ -144,7 +167,7 @@ Beam_engraver::process_music () if (stop_ev_ && beam_) { announce_end_grob (beam_, stop_ev_->self_scm ()); - + } } @@ -155,13 +178,20 @@ Beam_engraver::typeset_beam () { if (!finished_beam_->get_bound (RIGHT)) finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT)); - + if (forced_direction_) + { + Grob *stem = finished_beam_->get_bound (RIGHT); + 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; + } } @@ -171,9 +201,7 @@ Beam_engraver::start_translation_timestep () start_ev_ = 0; if (beam_) - { - set_melisma (true); - } + set_melisma (true); } void @@ -184,7 +212,7 @@ Beam_engraver::stop_translation_timestep () finished_beam_ = beam_; finished_beam_info_ = beam_info_; finished_beaming_options_ = beaming_options_; - + stop_ev_ = 0; beam_ = 0; beam_info_ = 0; @@ -214,20 +242,16 @@ Beam_engraver::acknowledge_rest (Grob_info info) { if (beam_ && !scm_is_number (info.grob ()->get_property_data ("staff-position"))) - { - chain_offset_callback (info.grob(), - Beam::rest_collision_callback_proc, Y_AXIS); - } + chain_offset_callback (info.grob (), + Beam::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; @@ -236,8 +260,6 @@ Beam_engraver::acknowledge_stem (Grob_info info) if (Stem::get_beam (stem)) return; - - Stream_event *ev = info.ultimate_event_cause (); if (!ev->in_event_class ("rhythmic-event")) { @@ -258,11 +280,14 @@ Beam_engraver::acknowledge_stem (Grob_info info) */ } - stem->set_property ("duration-log", - scm_from_int (durlog)); + 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)); + max (durlog- 2, 0), + Stem::is_invisible (stem)); Beam::add_stem (beam_, stem); } @@ -271,19 +296,21 @@ ADD_ACKNOWLEDGER (Beam_engraver, rest); ADD_TRANSLATOR (Beam_engraver, /* doc */ + "Handle @code{Beam} events by engraving beams. If omitted," + " then notes are printed with flags instead of beams.", - "Handles Beam events by engraving Beams. If omitted, then notes will be " - "printed with flags instead of beams.", - - /* create */ "Beam", + /* create */ + "Beam ", /* read */ + "baseMoment " "beamMelismaBusy " - "beatLength " - "subdivideBeams " - , + "beatStructure " + "subdivideBeams ", + /* write */ - "forbidBreak"); + "forbidBreak" + ); class Grace_beam_engraver : public Beam_engraver { @@ -291,7 +318,7 @@ public: TRANSLATOR_DECLARATIONS (Grace_beam_engraver); DECLARE_TRANSLATOR_LISTENER (beam); - + protected: virtual bool valid_start_point (); virtual bool valid_end_point (); @@ -335,18 +362,21 @@ ADD_ACKNOWLEDGER (Grace_beam_engraver, stem); ADD_ACKNOWLEDGER (Grace_beam_engraver, rest); ADD_TRANSLATOR (Grace_beam_engraver, - /* 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 ", - "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. ", - - /* create */ "Beam", /* read */ + "baseMoment " "beamMelismaBusy " - "beatLength " - "subdivideBeams " - , - /* write */ ""); + "beatStructure " + "subdivideBeams ", + + /* write */ + "" + );