X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fnote-head-line-engraver.cc;h=046a26423126567b9bfcd33e7979e49f8f1276ba;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=9ca614859b51aae8d4495eba7f31611d7a50eda7;hpb=c19dc0b2d549724254967d8acdd3740c4400c71f;p=lilypond.git diff --git a/lily/note-head-line-engraver.cc b/lily/note-head-line-engraver.cc index 9ca614859b..046a264231 100644 --- a/lily/note-head-line-engraver.cc +++ b/lily/note-head-line-engraver.cc @@ -1,152 +1,129 @@ -/* - note-head-line-engraver.cc -- implement Note_head_line_engraver - - source file of the GNU LilyPond music typesetter - - (c) 2000 Jan Nieuwenhuizen - */ +/* + This file is part of LilyPond, the GNU music typesetter. + + Copyright (C) 2000--2015 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 "engraver.hh" -#include "group-interface.hh" -#include "item.hh" -#include "musical-request.hh" -#include "spanner.hh" +#include "pointer-group-interface.hh" #include "stem.hh" #include "rhythmic-head.hh" #include "side-position-interface.hh" #include "staff-symbol-referencer.hh" -#include "translator-group.hh" +#include "context.hh" +#include "spanner.hh" +#include "item.hh" /** - Create line-spanner grobs for glissandi (and possibly other) lines - that connect note heads. - */ + Create line-spanner grobs for lines that connect note heads. + TODO: have the line commit suicide if the notes are connected with + either slur or beam. +*/ class Note_head_line_engraver : public Engraver { public: - VIRTUAL_COPY_CONS (Translator); - Note_head_line_engraver (); + TRANSLATOR_DECLARATIONS (Note_head_line_engraver); protected: - virtual void acknowledge_grob (Grob_info); - virtual void create_grobs (); - virtual void stop_translation_timestep (); - virtual bool try_music (Music *); + DECLARE_ACKNOWLEDGER (rhythmic_head); + void process_acknowledged (); + void stop_translation_timestep (); private: - Spanner* line_; - Request* req_; - Request* last_req_; - Translator* last_staff_; + Spanner *line_; + Context *last_staff_; bool follow_; - Grob* head_; - Grob* last_head_; + Grob *head_; + Grob *last_head_; }; Note_head_line_engraver::Note_head_line_engraver () { line_ = 0; - req_ = 0; - last_req_ = 0; follow_ = false; head_ = 0; last_head_ = 0; last_staff_ = 0; } -bool -Note_head_line_engraver::try_music (Music* m) +void +Note_head_line_engraver::acknowledge_rhythmic_head (Grob_info info) { - if (!req_) + head_ = info.grob (); + Context *tr = context (); + + while (tr && !tr->is_alias (ly_symbol2scm ("Staff"))) + tr = tr->get_parent_context (); + + if (tr + && tr->is_alias (ly_symbol2scm ("Staff")) && tr != last_staff_ + && to_boolean (get_property ("followVoice"))) { - if (Glissando_req *r = dynamic_cast (m)) - { - req_ = r; - return true; - } + if (last_head_) + follow_ = true; } - return false; + last_staff_ = tr; } void -Note_head_line_engraver::acknowledge_grob (Grob_info info) +Note_head_line_engraver::process_acknowledged () { - if (Rhythmic_head::has_interface (info.elem_l_)) + if (!line_ && follow_ && last_head_ && head_) { - last_head_ = head_; - head_ = info.elem_l_; - if (to_boolean (get_property ("followThread"))) - { - Translator* staff = daddy_trans_l_ && daddy_trans_l_->daddy_trans_l_ - ? daddy_trans_l_->daddy_trans_l_->daddy_trans_l_ : 0; - if (staff != last_staff_) - { - if (last_head_) - follow_ = true; - last_staff_ = staff; - } - } - } -} + /* TODO: Don't follow if there's a beam. -static Grob* -beam_l (Grob *h) -{ - if (Grob *s = Rhythmic_head::stem_l (h)) - return Stem::beam_l (s); - return 0; -} + We can't do beam-stuff here, since beam doesn't exist yet. + Should probably store follow_ in line_, and suicide at some + later point */ + if (follow_) + line_ = make_spanner ("VoiceFollower", head_->self_scm ()); + + line_->set_bound (LEFT, last_head_); + line_->set_bound (RIGHT, head_); -void -Note_head_line_engraver::create_grobs () -{ - if (!line_ && (follow_ || last_req_) && last_head_ && head_ - && (last_head_ != head_)) - { - /* Don't follow if there's a beam. - - Hmm, this doesn't work, as head_ does not yet have a beam. - Should probably store follow_ in line_, and suicide at some - later point */ - if (!(follow_ - && beam_l (last_head_) && beam_l (last_head_) == beam_l (head_))) - { - if (follow_) - line_ = new Spanner (get_property ("FollowThread")); - else - line_ = new Spanner (get_property ("Glissando")); - - line_->set_bound (LEFT, last_head_); - line_->set_bound (RIGHT, head_); - - /* Note, mustn't set y-parent of breakable symbol to simple item: - one of the two broken parts won't have an y-parent! */ - /* X parent is set by set_bound */ - line_->set_parent (Staff_symbol_referencer::staff_symbol_l (last_head_), - Y_AXIS); - - announce_grob (line_, last_req_); - } - - last_req_ = 0; follow_ = false; - last_head_ = 0; } } void Note_head_line_engraver::stop_translation_timestep () { - if (line_) - { - typeset_grob (line_); - line_ = 0; - } - last_req_ = req_; - req_ = 0; + line_ = 0; + if (head_) + last_head_ = head_; + head_ = 0; } +#include "translator.icc" + +ADD_ACKNOWLEDGER (Note_head_line_engraver, rhythmic_head); +ADD_TRANSLATOR (Note_head_line_engraver, + /* doc */ + "Engrave a line between two note heads, for example a" + " glissando. If @code{followVoice} is set, staff switches" + " also generate a line.", + + /* create */ + "Glissando " + "VoiceFollower ", -ADD_THIS_TRANSLATOR (Note_head_line_engraver); + /* read */ + "followVoice ", + /* write */ + "" + );