+++ /dev/null
-/*
- This file is part of LilyPond, the GNU music typesetter.
-
- Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
-
- 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "axis-group-interface.hh"
-#include "context.hh"
-#include "engraver.hh"
-#include "dimensions.hh"
-#include "directional-element-interface.hh"
-#include "engraver.hh"
-#include "hairpin.hh"
-#include "international.hh"
-#include "interval.hh"
-#include "note-column.hh"
-#include "paper-column.hh"
-#include "pointer-group-interface.hh"
-#include "script-interface.hh"
-#include "self-alignment-interface.hh"
-#include "side-position-interface.hh"
-#include "staff-symbol-referencer.hh"
-#include "stream-event.hh"
-#include "warn.hh"
-#include "spanner.hh"
-#include "text-interface.hh"
-
-#include "translator.icc"
-
-/*
- TODO:
-
- * direction of text-dynamic-event if not equal to direction of
- line-spanner
-
- - TODO: this engraver is too complicated. We should split it into
- the handling of the basic grobs and the linespanner
-
- - TODO: the line-spanner is not killed after the (de)crescs are
- finished.
-*/
-
-/**
- print text & hairpin dynamics.
-*/
-class Dynamic_engraver : public Engraver
-{
- Item *script_;
- Spanner *line_spanner_;
- Spanner *cresc_;
-
- Spanner *finished_line_spanner_;
- Spanner *finished_cresc_;
-
- Stream_event *script_ev_;
- Stream_event *current_cresc_ev_;
-
- Drul_array<Stream_event *> accepted_spanevents_drul_;
-
- vector<Note_column *> pending_columns_;
- vector<Grob *> pending_elements_;
-
- void typeset_all ();
-
- TRANSLATOR_DECLARATIONS (Dynamic_engraver);
- DECLARE_ACKNOWLEDGER (note_column);
- DECLARE_TRANSLATOR_LISTENER (absolute_dynamic);
- DECLARE_TRANSLATOR_LISTENER (span_dynamic);
-
-protected:
- virtual void finalize ();
- void stop_translation_timestep ();
- void process_music ();
-};
-
-Dynamic_engraver::Dynamic_engraver ()
-{
- script_ = 0;
- finished_cresc_ = 0;
- line_spanner_ = 0;
- finished_line_spanner_ = 0;
- current_cresc_ev_ = 0;
- cresc_ = 0;
-
- script_ev_ = 0;
- accepted_spanevents_drul_[START] = 0;
- accepted_spanevents_drul_[STOP] = 0;
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_engraver, absolute_dynamic);
-void
-Dynamic_engraver::listen_absolute_dynamic (Stream_event *ev)
-{
- /*
- TODO: probably broken.
- */
- ASSIGN_EVENT_ONCE (script_ev_, ev);
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_engraver, span_dynamic);
-void
-Dynamic_engraver::listen_span_dynamic (Stream_event *ev)
-{
- Direction d = to_dir (ev->get_property ("span-direction"));
-
- if (d == START)
- ASSIGN_EVENT_ONCE (accepted_spanevents_drul_[START], ev);
-
- /* Cancel any ongoing crescendo, either explicitly by \! or
- implicitly by a new crescendo. Also avoid warning if cresc is
- canceled both implicitly and explicitly. */
- if ((d == STOP || current_cresc_ev_) && !accepted_spanevents_drul_[STOP])
- ASSIGN_EVENT_ONCE (accepted_spanevents_drul_[STOP], ev);
-}
-
-void
-Dynamic_engraver::process_music ()
-{
- if (accepted_spanevents_drul_[START] || accepted_spanevents_drul_[STOP] || script_ev_)
- {
- if (!line_spanner_)
- {
- Stream_event *rq = accepted_spanevents_drul_[START];
- line_spanner_ = make_spanner ("DynamicLineSpanner", rq ? rq->self_scm () : SCM_EOL);
- if (script_ev_)
- rq = script_ev_;
- }
- }
-
- /*
- During a (de)crescendo, pending event will not be cleared,
- and a line-spanner will always be created, as \< \! are already
- two events.
-
- Note: line-spanner must always have at least same duration
- as (de)crecsendo, b.o. line-breaking.
- */
-
- /*
- maybe we should leave dynamic texts to the text-engraver and
- simply acknowledge them?
- */
- if (script_ev_)
- {
- script_ = make_item ("DynamicText", script_ev_->self_scm ());
- script_->set_property ("text",
- script_ev_->get_property ("text"));
-
- if (Direction d = to_dir (script_ev_->get_property ("direction")))
- set_grob_direction (line_spanner_, d);
- else if (Direction d = to_dir (line_spanner_->get_property ("direction")))
- set_grob_direction (script_, d);
-
- Axis_group_interface::add_element (line_spanner_, script_);
- }
-
- if (accepted_spanevents_drul_[STOP] || script_ev_)
- {
- /*
- finish side position alignment if the (de)cresc ends here, and
- there are no new dynamics.
- */
-
- if (cresc_)
- {
- assert (!finished_cresc_ && cresc_);
-
- if (script_)
- {
- cresc_->set_bound (RIGHT, script_);
- add_bound_item (line_spanner_, script_);
- }
-
- finished_cresc_ = cresc_;
- announce_end_grob (finished_cresc_, SCM_EOL);
- cresc_ = 0;
- current_cresc_ev_ = 0;
- }
- else if (accepted_spanevents_drul_[STOP])
- accepted_spanevents_drul_[STOP]->origin ()->warning (_ ("cannot find start of (de)crescendo"));
- }
-
- if (accepted_spanevents_drul_[START])
- {
- if (current_cresc_ev_)
- {
- string msg = _ ("already have a decrescendo");
- if (current_cresc_ev_->in_event_class ("crescendo-event"))
- msg = _ ("already have a crescendo");
-
- accepted_spanevents_drul_[START]->origin ()->warning (msg);
- current_cresc_ev_->origin ()->warning (_ ("cresc starts here"));
- }
- else
- {
- current_cresc_ev_ = accepted_spanevents_drul_[START];
-
- if (Direction d = to_dir (current_cresc_ev_->get_property ("direction")))
- set_grob_direction (line_spanner_, d);
-
- /*
- TODO: Use symbols.
- */
-
- SCM start_sym = scm_car (current_cresc_ev_->get_property ("class"));
- string start_type;
-
- if (start_sym == ly_symbol2scm ("decrescendo-event"))
- start_type = "decrescendo";
- else if (start_sym == ly_symbol2scm ("crescendo-event"))
- start_type = "crescendo";
- else
- {
- programming_error ("unknown dynamic spanner type");
- return;
- }
-
- /*
- UGH. TODO: should read from original event, so appearance
- may be altered with \tweak.
- */
- SCM s = get_property ((start_type + "Spanner").c_str ());
- if (!scm_is_symbol (s) || s == ly_symbol2scm ("hairpin"))
- {
- cresc_ = make_spanner ("Hairpin", accepted_spanevents_drul_[START]->self_scm ());
- if (finished_cresc_)
- {
- Pointer_group_interface::add_grob (finished_cresc_,
- ly_symbol2scm ("adjacent-hairpins"),
- cresc_);
-
- Pointer_group_interface::add_grob (cresc_,
- ly_symbol2scm ("adjacent-hairpins"),
- finished_cresc_);
- }
- }
-
- /*
- This is a convenient (and legacy) interface to TextSpanners
- for use in (de)crescendi.
- Hmm.
- */
- else
- {
- cresc_ = make_spanner ("DynamicTextSpanner", accepted_spanevents_drul_[START]->self_scm ());
- cresc_->set_property ("style", s);
- context ()->set_property ((start_type
- + "Spanner").c_str (), SCM_EOL);
- s = get_property ((start_type + "Text").c_str ());
- if (Text_interface::is_markup (s))
- {
- cresc_->set_property ("text", s);
- context ()->set_property ((start_type + "Text").c_str (),
- SCM_EOL);
- }
-
- if (script_)
- {
- set_nested_property (cresc_,
- scm_list_3 (ly_symbol2scm ("bound-details"),
- ly_symbol2scm ("left"),
- ly_symbol2scm ("attach-dir")
- ),
- scm_from_int (RIGHT));
- }
- }
-
- if (script_)
- {
- cresc_->set_bound (LEFT, script_);
- add_bound_item (line_spanner_, cresc_->get_bound (LEFT));
- }
- Axis_group_interface::add_element (line_spanner_, cresc_);
- }
- }
-}
-
-void
-Dynamic_engraver::stop_translation_timestep ()
-{
- if (!current_cresc_ev_ && line_spanner_)
- {
- assert (!finished_line_spanner_);
- finished_line_spanner_ = line_spanner_;
- line_spanner_ = 0;
- }
-
- typeset_all ();
-
- if (cresc_ && !cresc_->get_bound (LEFT))
- {
- cresc_->set_bound (LEFT, unsmob_grob (get_property ("currentMusicalColumn")));
- add_bound_item (line_spanner_, cresc_->get_bound (LEFT));
- }
-
- script_ev_ = 0;
- accepted_spanevents_drul_[START] = 0;
- accepted_spanevents_drul_[STOP] = 0;
-}
-
-void
-Dynamic_engraver::finalize ()
-{
- typeset_all ();
-
- if (line_spanner_
- && !line_spanner_->is_live ())
- line_spanner_ = 0;
- if (line_spanner_)
- {
- finished_line_spanner_ = line_spanner_;
- typeset_all ();
- }
-
- if (cresc_
- && !cresc_->is_live ())
- cresc_ = 0;
- if (cresc_)
- {
- current_cresc_ev_->origin ()->warning (_ ("unterminated (de)crescendo"));
- cresc_->suicide ();
- cresc_ = 0;
- }
-}
-
-void
-Dynamic_engraver::typeset_all ()
-{
- if (finished_cresc_)
- {
- if (!finished_cresc_->get_bound (RIGHT))
- {
-
- Grob *column_bound = unsmob_grob (get_property ("currentMusicalColumn"));
-
- finished_cresc_->set_bound (RIGHT, script_
- ? script_
- : column_bound);
-
- if (finished_line_spanner_)
- add_bound_item (finished_line_spanner_,
- finished_cresc_->get_bound (RIGHT));
- }
- finished_cresc_ = 0;
- }
-
- script_ = 0;
- if (finished_line_spanner_)
- {
- /*
- We used to have
-
- extend-spanner-over-elements (finished_line_spanner_);
-
- but this is rather kludgy, since finished_line_spanner_
- typically has a staff-symbol field set , extending it over the
- entire staff.
-
- */
-
- Grob *l = finished_line_spanner_->get_bound (LEFT);
- Grob *r = finished_line_spanner_->get_bound (RIGHT);
- if (!r && l)
- finished_line_spanner_->set_bound (RIGHT, l);
- else if (!l && r)
- finished_line_spanner_->set_bound (LEFT, r);
- else if (!r && !l)
- {
- /*
- This is an isolated dynamic apparently, and does not even have
- any interesting support item.
- */
- Grob *cc = unsmob_grob (get_property ("currentMusicalColumn"));
- Item *ci = dynamic_cast<Item *> (cc);
- finished_line_spanner_->set_bound (RIGHT, ci);
- finished_line_spanner_->set_bound (LEFT, ci);
- }
- finished_line_spanner_ = 0;
- }
-}
-
-void
-Dynamic_engraver::acknowledge_note_column (Grob_info info)
-{
- if (!line_spanner_)
- return;
-
- if (line_spanner_
- /* Don't refill killed spanner */
- && line_spanner_->is_live ())
- {
- Side_position_interface::add_support (line_spanner_, info.grob ());
- add_bound_item (line_spanner_, dynamic_cast<Item *> (info.grob ()));
- }
-
- if (script_ && !script_->get_parent (X_AXIS))
- {
- extract_grob_set (info.grob (), "note-heads", heads);
- if (heads.size ())
- {
- Grob *head = heads[0];
- script_->set_parent (head, X_AXIS);
- Self_alignment_interface::set_center_parent (script_, X_AXIS);
- }
- }
-
- if (cresc_)
- {
- if (!cresc_->get_bound (LEFT))
- {
- cresc_->set_bound (LEFT, info.grob ());
- add_bound_item (line_spanner_, cresc_->get_bound (LEFT));
- }
- }
-
- if (finished_cresc_ && !finished_cresc_->get_bound (RIGHT))
- finished_cresc_->set_bound (RIGHT, info.grob ());
-}
-
-ADD_ACKNOWLEDGER (Dynamic_engraver, note_column);
-
-ADD_TRANSLATOR (Dynamic_engraver,
- /* doc */
- "Create hairpins, dynamic texts, and their vertical"
- " alignments. The symbols are collected onto a"
- " @code{DynamicLineSpanner} grob which takes care of vertical"
- " positioning.",
-
- /* create */
- "DynamicLineSpanner "
- "DynamicTextSpanner "
- "DynamicText "
- "Hairpin ",
-
- /* read */
- "",
-
- /* write */
- ""
- );
projects / lilypond.git / commitdiff