+++ /dev/null
-/*
- This file is part of LilyPond, the GNU music typesetter.
-
- Copyright (C) 2008--2012 Han-Wen Nienhuys <hanwen@lilypond.org>
-
- 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 "engraver.hh"
-#include "hairpin.hh"
-#include "international.hh"
-#include "item.hh"
-#include "note-column.hh"
-#include "pointer-group-interface.hh"
-#include "self-alignment-interface.hh"
-#include "spanner.hh"
-#include "stream-event.hh"
-#include "text-interface.hh"
-
-#include "translator.icc"
-
-class New_dynamic_engraver : public Engraver
-{
- TRANSLATOR_DECLARATIONS (New_dynamic_engraver);
- DECLARE_ACKNOWLEDGER (note_column);
- DECLARE_TRANSLATOR_LISTENER (absolute_dynamic);
- DECLARE_TRANSLATOR_LISTENER (span_dynamic);
- DECLARE_TRANSLATOR_LISTENER (break_span);
-
-protected:
- virtual void process_music ();
- virtual void stop_translation_timestep ();
- virtual void finalize ();
-
-private:
- SCM get_property_setting (Stream_event *evt, char const *evprop,
- char const *ctxprop);
- string get_spanner_type (Stream_event *ev);
-
- Drul_array<Stream_event *> accepted_spanevents_drul_;
- Spanner *current_spanner_;
- Spanner *finished_spanner_;
-
- Item *script_;
- Stream_event *script_event_;
- Stream_event *current_span_event_;
- bool end_new_spanner_;
-};
-
-New_dynamic_engraver::New_dynamic_engraver ()
-{
- script_event_ = 0;
- current_span_event_ = 0;
- script_ = 0;
- finished_spanner_ = 0;
- current_spanner_ = 0;
- accepted_spanevents_drul_.set (0, 0);
- end_new_spanner_ = false;
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (New_dynamic_engraver, absolute_dynamic);
-void
-New_dynamic_engraver::listen_absolute_dynamic (Stream_event *ev)
-{
- ASSIGN_EVENT_ONCE (script_event_, ev);
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (New_dynamic_engraver, span_dynamic);
-void
-New_dynamic_engraver::listen_span_dynamic (Stream_event *ev)
-{
- Direction d = to_dir (ev->get_property ("span-direction"));
-
- ASSIGN_EVENT_ONCE (accepted_spanevents_drul_[d], ev);
-}
-
-IMPLEMENT_TRANSLATOR_LISTENER (New_dynamic_engraver, break_span);
-void
-New_dynamic_engraver::listen_break_span (Stream_event *event)
-{
- if (event->in_event_class ("break-dynamic-span-event"))
- {
- // Case 1: Already have a start dynamic event -> break applies to new
- // spanner (created later) -> set a flag
- // Case 2: no new spanner, but spanner already active -> break it now
- if (accepted_spanevents_drul_[START])
- end_new_spanner_ = true;
- else if (current_spanner_)
- current_spanner_->set_property ("spanner-broken", SCM_BOOL_T);
- }
-}
-
-SCM
-New_dynamic_engraver::get_property_setting (Stream_event *evt,
- char const *evprop,
- char const *ctxprop)
-{
- SCM spanner_type = evt->get_property (evprop);
- if (spanner_type == SCM_EOL)
- spanner_type = get_property (ctxprop);
- return spanner_type;
-}
-
-void
-New_dynamic_engraver::process_music ()
-{
- if (current_spanner_
- && (accepted_spanevents_drul_[STOP]
- || script_event_
- || accepted_spanevents_drul_[START]))
- {
- Stream_event *ender = accepted_spanevents_drul_[STOP];
- if (!ender)
- ender = script_event_;
-
- if (!ender)
- ender = accepted_spanevents_drul_[START];
-
- finished_spanner_ = current_spanner_;
- announce_end_grob (finished_spanner_, ender->self_scm ());
- current_spanner_ = 0;
- current_span_event_ = 0;
- }
-
- if (accepted_spanevents_drul_[START])
- {
- current_span_event_ = accepted_spanevents_drul_[START];
-
- string start_type = get_spanner_type (current_span_event_);
- SCM cresc_type = get_property_setting (current_span_event_, "span-type",
- (start_type + "Spanner").c_str ());
-
- if (cresc_type == ly_symbol2scm ("text"))
- {
- current_spanner_
- = make_spanner ("DynamicTextSpanner",
- accepted_spanevents_drul_[START]->self_scm ());
-
- SCM text = get_property_setting (current_span_event_, "span-text",
- (start_type + "Text").c_str ());
- if (Text_interface::is_markup (text))
- current_spanner_->set_property ("text", text);
- /*
- If the line of a text spanner is hidden, end the alignment spanner
- early: this allows dynamics to be spaced individually instead of
- being linked together.
- */
- if (current_spanner_->get_property ("style") == ly_symbol2scm ("none"))
- current_spanner_->set_property ("spanner-broken", SCM_BOOL_T);
- }
- else
- {
- if (cresc_type != ly_symbol2scm ("hairpin"))
- {
- string as_string = ly_scm_write_string (cresc_type);
- current_span_event_
- ->origin ()->warning (_f ("unknown crescendo style: %s\ndefaulting to hairpin.", as_string.c_str ()));
- }
- current_spanner_ = make_spanner ("Hairpin",
- current_span_event_->self_scm ());
- }
- // if we have a break-dynamic-span event right after the start dynamic, break the new spanner immediately
- if (end_new_spanner_)
- {
- current_spanner_->set_property ("spanner-broken", SCM_BOOL_T);
- end_new_spanner_ = false;
- }
- if (finished_spanner_)
- {
- if (Hairpin::has_interface (finished_spanner_))
- Pointer_group_interface::add_grob (finished_spanner_,
- ly_symbol2scm ("adjacent-spanners"),
- current_spanner_);
- if (Hairpin::has_interface (current_spanner_))
- Pointer_group_interface::add_grob (current_spanner_,
- ly_symbol2scm ("adjacent-spanners"),
- finished_spanner_);
- }
- }
-
- if (script_event_)
- {
- script_ = make_item ("DynamicText", script_event_->self_scm ());
- script_->set_property ("text",
- script_event_->get_property ("text"));
-
- if (finished_spanner_)
- finished_spanner_->set_bound (RIGHT, script_);
- if (current_spanner_)
- current_spanner_->set_bound (LEFT, script_);
- }
-}
-
-void
-New_dynamic_engraver::stop_translation_timestep ()
-{
- if (finished_spanner_ && !finished_spanner_->get_bound (RIGHT))
- finished_spanner_
- ->set_bound (RIGHT,
- unsmob_grob (get_property ("currentMusicalColumn")));
-
- if (current_spanner_ && !current_spanner_->get_bound (LEFT))
- current_spanner_
- ->set_bound (LEFT,
- unsmob_grob (get_property ("currentMusicalColumn")));
- script_ = 0;
- script_event_ = 0;
- accepted_spanevents_drul_.set (0, 0);
- finished_spanner_ = 0;
- end_new_spanner_ = false;
-}
-
-void
-New_dynamic_engraver::finalize ()
-{
- if (current_spanner_
- && !current_spanner_->is_live ())
- current_spanner_ = 0;
- if (current_spanner_)
- {
- current_span_event_
- ->origin ()->warning (_f ("unterminated %s",
- get_spanner_type (current_span_event_)
- .c_str ()));
- current_spanner_->suicide ();
- current_spanner_ = 0;
- }
-}
-
-string
-New_dynamic_engraver::get_spanner_type (Stream_event *ev)
-{
- string type;
- SCM start_sym = scm_car (ev->get_property ("class"));
-
- if (start_sym == ly_symbol2scm ("decrescendo-event"))
- type = "decrescendo";
- else if (start_sym == ly_symbol2scm ("crescendo-event"))
- type = "crescendo";
- else
- programming_error ("unknown dynamic spanner type");
-
- return type;
-}
-
-void
-New_dynamic_engraver::acknowledge_note_column (Grob_info info)
-{
- if (script_ && !script_->get_parent (X_AXIS))
- {
- extract_grob_set (info.grob (), "note-heads", heads);
- Grob *stem = unsmob_grob (info.grob ()->get_object ("stem"));
- /*
- Spacing constraints may require dynamics to be aligned on rests,
- so check for a rest if this note column has no note heads.
- */
- Grob *x_parent = (heads.size ()
- ? heads[0]
- : unsmob_grob (info.grob ()->get_object ("rest")));
- if (x_parent)
- {
- script_->set_parent (x_parent, X_AXIS);
- Self_alignment_interface::set_center_parent (script_, X_AXIS);
- Self_alignment_interface::avoid_x_collisions (script_);
- }
- if (stem)
- Pointer_group_interface::add_grob (script_, ly_symbol2scm ("potential-X-colliding-grobs"), stem);
- }
-
- if (current_spanner_ && !current_spanner_->get_bound (LEFT))
- current_spanner_->set_bound (LEFT, info.grob ());
- if (finished_spanner_ && !finished_spanner_->get_bound (RIGHT))
- finished_spanner_->set_bound (RIGHT, info.grob ());
-}
-
-ADD_ACKNOWLEDGER (New_dynamic_engraver, note_column);
-ADD_TRANSLATOR (New_dynamic_engraver,
- /* doc */
- "Create hairpins, dynamic texts and dynamic text spanners.",
-
- /* create */
- "DynamicTextSpanner "
- "DynamicText "
- "Hairpin ",
-
- /* read */
- "crescendoSpanner "
- "crescendoText "
- "currentMusicalColumn "
- "decrescendoSpanner "
- "decrescendoText ",
-
- /* write */
- ""
- );
projects / lilypond.git / blobdiff