X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fauto-beam-engraver.cc;h=c976688a0db257e74278b376294168835049ba59;hb=d7c0f4263534307616c82d9b2ce6fdef9472456f;hp=a98b05f48d953384474d5e5996fb023062b02eb1;hpb=a3765e1d290e5e49093e7ca7791bf3fe20be1726;p=lilypond.git diff --git a/lily/auto-beam-engraver.cc b/lily/auto-beam-engraver.cc index a98b05f48d..c976688a0d 100644 --- a/lily/auto-beam-engraver.cc +++ b/lily/auto-beam-engraver.cc @@ -1,9 +1,20 @@ /* - auto-beam-engraver.cc -- implement Auto_beam_engraver + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1999--2010 Jan Nieuwenhuizen - (c) 1999--2007 Jan Nieuwenhuizen + 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 "bar-line.hh" @@ -34,29 +45,32 @@ protected: DECLARE_ACKNOWLEDGER (rest); DECLARE_ACKNOWLEDGER (beam); DECLARE_ACKNOWLEDGER (bar_line); + DECLARE_ACKNOWLEDGER (breathing_sign); DECLARE_ACKNOWLEDGER (stem); DECLARE_TRANSLATOR_LISTENER (beam_forbid); void process_acknowledged (); private: - bool test_moment (Direction, Moment); - void consider_begin (Moment); - void consider_end (Moment); + bool test_moment (Direction, Moment, Moment); + void consider_begin (Moment, Moment); + void consider_end (Moment, Moment); Spanner *create_beam (); void begin_beam (); void end_beam (); void junk_beam (); bool is_same_grace_state (Grob *e); + void recheck_beam (); void typeset_beam (); + vector *remove_end_stems (vsize); Stream_event *forbid_; /* - shortest_mom is the shortest note in the beam. + shortest_mom_ is the shortest note in the beam. */ Moment shortest_mom_; Spanner *finished_beam_; - vector *stems_; + vector *stems_; int process_acknowledged_count_; Moment last_add_mom_; @@ -76,8 +90,8 @@ private: Beaming_options beaming_options_; Beaming_options finished_beaming_options_; - - + + void check_bar_property (); }; @@ -97,7 +111,7 @@ Auto_beam_engraver::check_bar_property () if (scm_is_string (get_property ("whichBar")) && beam_start_moment_ < now) { - consider_end (shortest_mom_); + consider_end (measure_position (context ()), shortest_mom_); junk_beam (); } } @@ -105,25 +119,25 @@ Auto_beam_engraver::check_bar_property () void Auto_beam_engraver::process_music () { + Moment now = now_mom (); /* don't beam over skips */ if (stems_) { - Moment now = now_mom (); if (extend_mom_ < now) end_beam (); } if (scm_is_string (get_property ("whichBar"))) { - consider_end (shortest_mom_); + consider_end (measure_position (context ()), shortest_mom_); junk_beam (); } if (forbid_) { - consider_end (shortest_mom_); + consider_end (measure_position (context ()), shortest_mom_); junk_beam (); } } @@ -133,7 +147,7 @@ Auto_beam_engraver::Auto_beam_engraver () forbid_ = 0; process_acknowledged_count_ = 0; stems_ = 0; - shortest_mom_ = Moment (Rational (1, 8)); + shortest_mom_ = Moment (Rational (1, 4)); finished_beam_ = 0; finished_grouping_ = 0; grouping_ = 0; @@ -148,36 +162,37 @@ Auto_beam_engraver::listen_beam_forbid (Stream_event *ev) } bool -Auto_beam_engraver::test_moment (Direction dir, Moment test) +Auto_beam_engraver::test_moment (Direction dir, Moment test_mom, Moment dur) { - return scm_call_3 (get_property ("autoBeamCheck"), + return scm_call_4 (get_property ("autoBeamCheck"), context ()->self_scm (), scm_from_int (dir), - test.smobbed_copy ()) + test_mom.smobbed_copy (), + dur.smobbed_copy ()) != SCM_BOOL_F; } void -Auto_beam_engraver::consider_begin (Moment test_mom) +Auto_beam_engraver::consider_begin (Moment test_mom, Moment dur) { bool on = to_boolean (get_property ("autoBeaming")); if (!stems_ && on && !forbid_) { - bool b = test_moment (START, test_mom); + bool b = test_moment (START, test_mom, dur); if (b) begin_beam (); } } void -Auto_beam_engraver::consider_end (Moment test_mom) +Auto_beam_engraver::consider_end (Moment test_mom, Moment dur) { if (stems_) { /* Allow already started autobeam to end: don't check for autoBeaming */ - bool b = test_moment (STOP, test_mom); + bool b = test_moment (STOP, test_mom, dur); if (b) end_beam (); } @@ -194,7 +209,7 @@ Auto_beam_engraver::create_beam () return 0; /* - Can't use make_spanner_from_properties () because we have to use + Can't use make_spanner () because we have to use beam_settings_. */ Spanner *beam = new Spanner (beam_settings_); @@ -216,7 +231,7 @@ Auto_beam_engraver::begin_beam () return; } - stems_ = new vector; + stems_ = new vector; grouping_ = new Beaming_pattern (); beaming_options_.from_context (context ()); beam_settings_ = updated_grob_properties (context (), ly_symbol2scm ("Beam")); @@ -238,7 +253,7 @@ Auto_beam_engraver::junk_beam () grouping_ = 0; beam_settings_ = SCM_EOL; - shortest_mom_ = Moment (Rational (1, 8)); + shortest_mom_ = Moment (Rational (1, 4)); } void @@ -249,7 +264,7 @@ Auto_beam_engraver::end_beam () else { finished_beam_ = create_beam (); - + if (finished_beam_) { announce_end_grob (finished_beam_, SCM_EOL); @@ -262,7 +277,7 @@ Auto_beam_engraver::end_beam () beam_settings_ = SCM_EOL; } - shortest_mom_ = Moment (Rational (1, 8)); + shortest_mom_ = Moment (Rational (1, 4)); } void @@ -272,7 +287,7 @@ Auto_beam_engraver::typeset_beam () { if (!finished_beam_->get_bound (RIGHT)) finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT)); - + finished_grouping_->beamify (finished_beaming_options_); Beam::set_beaming (finished_beam_, finished_grouping_); finished_beam_ = 0; @@ -302,27 +317,32 @@ Auto_beam_engraver::finalize () void -Auto_beam_engraver::acknowledge_beam (Grob_info info) +Auto_beam_engraver::acknowledge_beam (Grob_info /* info */) +{ + check_bar_property (); + if (stems_) + end_beam (); +} + +void +Auto_beam_engraver::acknowledge_bar_line (Grob_info /* info */) { - (void)info; check_bar_property (); if (stems_) end_beam (); } void -Auto_beam_engraver::acknowledge_bar_line (Grob_info info) +Auto_beam_engraver::acknowledge_breathing_sign (Grob_info /* info */) { - (void)info; check_bar_property (); if (stems_) end_beam (); } void -Auto_beam_engraver::acknowledge_rest (Grob_info info) +Auto_beam_engraver::acknowledge_rest (Grob_info /* info */) { - (void)info; check_bar_property (); if (stems_) end_beam (); @@ -374,39 +394,122 @@ Auto_beam_engraver::acknowledge_stem (Grob_info info) return; Moment dur = unsmob_duration (ev->get_property ("duration"))->get_length (); - - consider_end (dur); - consider_begin (dur); + Moment measure_now = measure_position (context ()); + bool recheck_needed = false; if (dur < shortest_mom_) + { + /* new shortest moment, so store it and set recheck_needed */ shortest_mom_ = dur; + recheck_needed = true; + } + + /* end should be based on shortest_mom_, begin should be + based on current duration */ + consider_end (measure_now, shortest_mom_); + consider_begin (measure_now, dur); if (!stems_) return; grouping_->add_stem (now - beam_start_moment_ + beam_start_location_, - durlog - 2); + durlog - 2, + Stem::is_invisible (stem)); stems_->push_back (stem); last_add_mom_ = now; extend_mom_ = max (extend_mom_, now) + get_event_length (ev, now); + if (recheck_needed) + recheck_beam (); +} + +void +Auto_beam_engraver::recheck_beam () +{ + /* + Recheck the beam after the shortest duration has changed + If shorter duration has created a new break, typeset the + first part of the beam and reset the current beam to just + the last part of the beam + */ + Beaming_pattern *new_grouping_ = 0; + vector *new_stems_ = 0; + Moment temporary_shortest_mom; + SCM temporary_beam_settings; + + bool found_end; + + + for (vsize i = 0; i < stems_->size () - 1;) + { + found_end = test_moment (STOP, + grouping_->end_moment (i), + shortest_mom_); + if (!found_end) + i++; + else + { + /* + Save the current beam settings and shortest_mom_ + Necessary because end_beam destroys them + */ + temporary_shortest_mom = shortest_mom_; + temporary_beam_settings = beam_settings_; + + /* Eliminate (and save) the items no longer part of the first beam */ + + new_grouping_ = grouping_->split_pattern (i); + new_stems_ = remove_end_stems (i); + + end_beam (); + typeset_beam (); + + /* now recreate the unbeamed data structures */ + stems_ = new_stems_; + grouping_ = new_grouping_; + shortest_mom_ = temporary_shortest_mom; + beam_settings_ = temporary_beam_settings; + + i = 0; + } + + } + +} + +/* + Remove all stems with an index greater than split_index + from stems_, and return a vector containing all of the + removed stems +*/ +vector * +Auto_beam_engraver::remove_end_stems (vsize split_index) +{ + vector *removed_stems = 0; + removed_stems = new vector ; + + for (vsize j = split_index + 1; j < stems_->size (); j++) + removed_stems->push_back ((*stems_).at (j)); + for (vsize j = split_index + 1; j < stems_->size ();) + stems_->pop_back (); + return removed_stems; } void Auto_beam_engraver::process_acknowledged () { - if (extend_mom_ > now_mom ()) + Moment now = now_mom(); + if (extend_mom_ > now) return; if (!process_acknowledged_count_) { - consider_end (shortest_mom_); - consider_begin (shortest_mom_); + Moment measure_now = measure_position (context ()); + consider_end (measure_now, shortest_mom_); } else if (process_acknowledged_count_ > 1) { if (stems_) { - Moment now = now_mom (); if ((extend_mom_ < now) || ((extend_mom_ == now) && (last_add_mom_ != now))) end_beam (); @@ -421,19 +524,28 @@ Auto_beam_engraver::process_acknowledged () ADD_ACKNOWLEDGER (Auto_beam_engraver, stem); ADD_ACKNOWLEDGER (Auto_beam_engraver, bar_line); ADD_ACKNOWLEDGER (Auto_beam_engraver, beam); +ADD_ACKNOWLEDGER (Auto_beam_engraver, breathing_sign); ADD_ACKNOWLEDGER (Auto_beam_engraver, rest); ADD_TRANSLATOR (Auto_beam_engraver, - /* doc */ "Generate beams based on measure characteristics and observed " - "Stems. Uses beatLength, measureLength and measurePosition to decide " - "when to start and stop a beam. Overriding beaming is done through " - "@ref{Stem_engraver} properties @code{stemLeftBeamCount} and " - "@code{stemRightBeamCount}. ", - /* create */ "Beam", - - /* read */ - "autoBeaming " - "autoBeamSettings " - "beatLength " - "subdivideBeams ", - - /* write */ ""); + /* doc */ + "Generate beams based on measure characteristics and observed" + " Stems. Uses @code{baseMoment}, @code{beatStructure}," + " @code{beamExceptions}, @code{measureLength}, and" + " @code{measurePosition} to decide when to start and stop a" + " beam. Overriding beaming is done through" + " @ref{Stem_engraver} properties @code{stemLeftBeamCount} and" + " @code{stemRightBeamCount}.", + + /* create */ + "Beam ", + + /* read */ + "autoBeaming " + "baseMoment " + "beamExceptions " + "beatStructure " + "subdivideBeams ", + + /* write */ + "" + );