X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmetronome-engraver.cc;h=6cd2bfde25e73ff844e875ba6fc6b12519a2bc08;hb=2fef7b7eb7ac5d7a2ed237bf22a6ec6fe5d946d9;hp=ea9b3893a56dd9a43c9a95765835f1e176900184;hpb=e24df7c27635dc996c466295eacf2981bddccaf7;p=lilypond.git diff --git a/lily/metronome-engraver.cc b/lily/metronome-engraver.cc index ea9b3893a5..6cd2bfde25 100644 --- a/lily/metronome-engraver.cc +++ b/lily/metronome-engraver.cc @@ -1,103 +1,201 @@ /* - mark-engraver.cc -- implement Metronome_mark_engraver + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1998--2015 Jan Nieuwenhuizen - (c) 1998--2005 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 +using namespace std; + +#include "engraver.hh" -#include "note-column.hh" -#include "bar-line.hh" -#include "time-signature.hh" -#include "engraver-group-engraver.hh" #include "context.hh" +#include "duration.hh" +#include "grob-array.hh" +#include "item.hh" +#include "music.hh" +#include "stream-event.hh" +#include "text-interface.hh" + +#include "translator.icc" -/** - put stuff over or next to bars. Examples: bar numbers, marginal notes, - rehearsal marks. - */ class Metronome_mark_engraver : public Engraver { + Item *text_; + Grob *support_; + Grob *bar_; + Stream_event *tempo_ev_; + public: TRANSLATOR_DECLARATIONS (Metronome_mark_engraver); + protected: - Item *text_; - Grob *bar_line_; - Music *mark_ev_; - - void create_items (Music*); -protected: - virtual void stop_translation_timestep (); - virtual bool try_music (Music *ev); - virtual void process_music (); + void stop_translation_timestep (); + void process_music (); + + void acknowledge_break_aligned (Grob_info); + void acknowledge_break_alignment (Grob_info); + void acknowledge_grob (Grob_info); + + void listen_tempo_change (Stream_event *); }; -Metronome_mark_engraver::Metronome_mark_engraver () +Metronome_mark_engraver::Metronome_mark_engraver (Context *c) + : Engraver (c) { text_ = 0; - mark_ev_ = 0; + support_ = 0; + bar_ = 0; + tempo_ev_ = 0; } -void -Metronome_mark_engraver::stop_translation_timestep () +void +Metronome_mark_engraver::listen_tempo_change (Stream_event *ev) { - if (text_) - { - Grob*mc = unsmob_grob (get_property( "currentMusicalColumn")); - text_->set_parent (mc, X_AXIS); - text_->set_property ("side-support-elements" , get_property ("stavesFound")); - - text_ = 0; - } - mark_ev_ = 0; + ASSIGN_EVENT_ONCE (tempo_ev_, ev); } +static bool +safe_is_member (SCM scm, SCM lst) +{ + return ly_is_list (lst) && scm_is_true (scm_member (scm, lst)); +} void -Metronome_mark_engraver::create_items (Music *rq) +Metronome_mark_engraver::acknowledge_break_aligned (Grob_info info) { - if (text_) - return; + Grob *g = info.grob (); + + if (text_ + && scm_is_eq (g->get_property ("break-align-symbol"), + ly_symbol2scm ("staff-bar"))) + bar_ = g; + else if (text_ + && !support_ + && safe_is_member (g->get_property ("break-align-symbol"), + text_->get_property ("break-align-symbols")) + && Item::break_visible (g)) + { + support_ = g; + text_->set_parent (g, X_AXIS); + } + if (bar_ || support_) + text_->set_property ("non-musical", SCM_BOOL_T); +} - text_ = make_item ("MetronomeMark", rq->self_scm () ); +void +Metronome_mark_engraver::acknowledge_break_alignment (Grob_info info) +{ + Grob *g = info.grob (); + if (text_ + && support_ + && dynamic_cast (g)) + text_->set_parent (g, X_AXIS); } +void +Metronome_mark_engraver::acknowledge_grob (Grob_info info) +{ + Grob *g = info.grob (); -bool -Metronome_mark_engraver::try_music (Music* r) + if (text_) + for (SCM s = text_->get_property ("non-break-align-symbols"); + scm_is_pair (s); + s = scm_cdr (s)) + if (g->internal_has_interface (scm_car (s))) + text_->set_parent (g, X_AXIS); +} + +void +Metronome_mark_engraver::stop_translation_timestep () { - mark_ev_ = r; - return true; + if (text_) + { + if (text_->get_parent (X_AXIS) + && text_->get_parent (X_AXIS)->internal_has_interface (ly_symbol2scm ("multi-measure-rest-interface")) + && bar_) + text_->set_parent (bar_, X_AXIS); + else if (!support_) + { + /* + Gardner Read "Music Notation", p.278 + + Align the metronome mark over the time signature (or the + first notational element of the measure if no time + signature is present in that measure). + */ + if (Grob *mc = unsmob (get_property ("currentMusicalColumn"))) + text_->set_parent (mc, X_AXIS); + else if (Grob *cc = unsmob (get_property ("currentCommandColumn"))) + text_->set_parent (cc, X_AXIS); + } + text_->set_object ("side-support-elements", + grob_list_to_grob_array (get_property ("stavesFound"))); + text_ = 0; + support_ = 0; + bar_ = 0; + tempo_ev_ = 0; + } } void Metronome_mark_engraver::process_music () { - if (mark_ev_) + if (tempo_ev_) { - create_items (mark_ev_); + text_ = make_item ("MetronomeMark", tempo_ev_->self_scm ()); SCM proc = get_property ("metronomeMarkFormatter"); - SCM result = scm_call_2 (proc, mark_ev_->self_scm (), - context ()->self_scm ()); - + SCM result = scm_call_2 (proc, + tempo_ev_->self_scm (), + context ()->self_scm ()); + text_->set_property ("text", result); } } + +void +Metronome_mark_engraver::boot () +{ + ADD_LISTENER (Metronome_mark_engraver, tempo_change); + ADD_ACKNOWLEDGER (Metronome_mark_engraver, break_aligned); + ADD_ACKNOWLEDGER (Metronome_mark_engraver, break_alignment); + ADD_ACKNOWLEDGER (Metronome_mark_engraver, grob); +} + ADD_TRANSLATOR (Metronome_mark_engraver, -/* descr */ "Engrave metro nome marking. This delegates the formatting work " - "to the function in the metronomeMarkFormatter property. " - "The mark is put over all staves. " - "The staves are taken from the @code{stavesFound} property, " - "which is maintained by @code{@ref{Staff_collecting_engraver}}. " - - , -/* creats*/ "MetronomeMark", -/* accepts */ "metronome-change-event", - /* acks */ "", -/* reads */ "stavesFound metronomeMarkFormatter", -/* write */ ""); + /* doc */ + "Engrave metronome marking. This delegates the formatting" + " work to the function in the @code{metronomeMarkFormatter}" + " property. The mark is put over all staves. The staves are" + " taken from the @code{stavesFound} property, which is" + " maintained by @ref{Staff_collecting_engraver}.", + + /* create */ + "MetronomeMark ", + + /* read */ + "currentCommandColumn " + "currentMusicalColumn " + "metronomeMarkFormatter " + "stavesFound " + "tempoHideNote ", + + /* write */ + "" + );