X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fauto-change-iterator.cc;h=4559344fd8448d558a2ba9b895176ee290c57951;hb=5bbfc22fce036b9b69df5e420de93e11da23c05e;hp=51e2284b2fbb61673fcb1ee3eee0b8ce406eb784;hpb=bcdd0abf2410919d2036be984ad4f2f42fd766d3;p=lilypond.git diff --git a/lily/auto-change-iterator.cc b/lily/auto-change-iterator.cc index 51e2284b2f..4559344fd8 100644 --- a/lily/auto-change-iterator.cc +++ b/lily/auto-change-iterator.cc @@ -1,147 +1,165 @@ -/* - auto-change-iterator.cc -- implement Auto_change_iterator +/* + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter - - (c) 1999--2003 Han-Wen Nienhuys - - */ + Copyright (C) 1999--2014 Han-Wen Nienhuys -#include "music.hh" -#include "auto-change-iterator.hh" -#include "translator-group.hh" -#include "event.hh" + 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 "context.hh" +#include "direction.hh" +#include "international.hh" +#include "music.hh" +#include "music-wrapper-iterator.hh" + +class Auto_change_iterator : public Music_wrapper_iterator +{ +public: + DECLARE_SCHEME_CALLBACK (constructor, ()); + + Auto_change_iterator (); + +protected: + virtual void do_quit (); + virtual void construct_children (); + virtual void process (Moment); + vector pending_pitch (Moment) const; +private: + SCM split_list_; + Direction where_dir_; + void change_to (Music_iterator *, SCM, const string&); + Moment start_moment_; + + Context_handle up_; + Context_handle down_; +}; void Auto_change_iterator::change_to (Music_iterator *it, SCM to_type_sym, - String to_id) + const string &to_id) { - Translator_group * current = it->report_to (); - Translator_group * last = 0; + Context *current = it->get_outlet (); + Context *last = 0; /* Cut & Paste from Change_iterator (ugh). - TODO: abstract this function - */ - + TODO: abstract this function + */ + /* find the type of translator that we're changing. - - If \translator Staff = bass, then look for Staff = * - */ - while (current && !current->is_alias_b (to_type_sym)) + + If \translator Staff = bass, then look for Staff = * + */ + while (current && !current->is_alias (to_type_sym)) { last = current; - current = current->daddy_trans_; + current = current->get_parent_context (); } - if (current && current->id_string_ == to_id) + if (current && current->id_string () == to_id) { - String msg; - msg += _ ("Can't switch translators, I'm there already"); + string msg; + msg += _f ("cannot change, already in translator: %s", to_id); } - - if (current) - if (last) - { - Translator_group * dest = - it->report_to ()->find_create_translator (to_type_sym, to_id); - current->remove_translator (last); - dest->add_used_group_translator (last); - } - else - { - /* - We could change the current translator's id, but that would make - errors hard to catch - - last->translator_id_string_ = get_change ()->change_to_id_string_; - */ - // error (_ ("I'm one myself")); - } - else - ; // error (_ ("none of these in my family")); -} - -/* - Look ahead to find first pitches to determine staff position. - WARNING: this means that - - \autochange Staff \notes { .... \context Staff = otherstaff { .. } .. } - - will confuse the autochanger, since it will not notice that the - music for OTHERSTAFF is not his. - - PRECONDITION: this->ok () holds. -*/ -Array -Auto_change_iterator::pending_pitch (Moment m) const -{ - Music_iterator * iter = child_iter_ ->clone (); - Array ps; - while (1) + if (current) { - SCM muses = iter->get_pending_events (m); - for (SCM s = muses; gh_pair_p (s); s=ly_cdr (s)) - { - Music * m = unsmob_music (ly_car (s)); - if (m && m->is_mus_type ("note-event")) - { - ps.push (*unsmob_pitch (m->get_mus_property ("pitch"))); - } - } - - if (ps.size ()) - break; - - iter->skip (m); - if (!iter->ok ()) - break; - - m = iter->pending_moment (); + if (last) + { + Context *dest + = it->get_outlet ()->find_create_context (to_type_sym, to_id, SCM_EOL); + + send_stream_event (last, "ChangeParent", get_music ()->origin (), + ly_symbol2scm ("context"), dest->self_scm ()); + } + else + { + /* + We could change the current translator's id, but that would make + errors hard to catch + + */ + ; + } } - - scm_gc_unprotect_object (iter->self_scm()); - - return ps; } void Auto_change_iterator::process (Moment m) { - /* - first we get the pitches, then we do the real work. - Music_wrapper_iterator::process () might process (and throw away) - pitches we need. */ - Array ps = pending_pitch (m); - Music_wrapper_iterator::process (m); - if (ps.size ()) + + Moment now = get_outlet ()->now_mom (); + Moment *splitm = 0; + if (start_moment_.main_part_.is_infinity () && start_moment_ < 0) + start_moment_ = now; + + for (; scm_is_pair (split_list_); split_list_ = scm_cdr (split_list_)) { - Pitch p = ps[0]; - Direction s = Direction (sign (p.steps ())); - /* - Don't change for central C. - - TODO: make this tunable somehow. Sometimes, you'd want to - switch for C.C. as well. - - */ - if (s && s != where_dir_) - { - where_dir_ = s; - String to_id = (s >= 0) ? "up" : "down"; - change_to (child_iter_, get_music ()->get_mus_property ("what"), to_id); - } + splitm = Moment::unsmob (scm_caar (split_list_)); + if ((*splitm + start_moment_) > now) + break; + + SCM tag = scm_cdar (split_list_); + Direction d = to_dir (tag); + + if (d && d != where_dir_) + { + where_dir_ = d; + string to_id = (d >= 0) ? "up" : "down"; + change_to (child_iter_, + ly_symbol2scm ("Staff"), + to_id); + } } } Auto_change_iterator::Auto_change_iterator () { where_dir_ = CENTER; + split_list_ = SCM_EOL; +} + +void +Auto_change_iterator::construct_children () +{ + split_list_ = get_music ()->get_property ("split-list"); + start_moment_ = get_outlet ()->now_mom (); + + SCM props = get_outlet ()->get_property ("trebleStaffProperties"); + Context *up = get_outlet ()->find_create_context (ly_symbol2scm ("Staff"), + "up", props); + + props = get_outlet ()->get_property ("bassStaffProperties"); + Context *down = get_outlet ()->find_create_context (ly_symbol2scm ("Staff"), + "down", props); + + up_.set_context (up); + down_.set_context (down); + + Context *voice = up->find_create_context (ly_symbol2scm ("Voice"), + "", SCM_EOL); + set_context (voice); + Music_wrapper_iterator::construct_children (); +} + +void +Auto_change_iterator::do_quit () +{ + up_.set_context (0); + down_.set_context (0); } IMPLEMENT_CTOR_CALLBACK (Auto_change_iterator);