-/*
- volta-engraver.cc -- implement Volta_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+
+ Copyright (C) 2000--2015 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 "engraver.hh"
-#include "translator-group.hh"
-#include "volta-spanner.hh"
-#include "item.hh"
+
+#include "axis-group-interface.hh"
+#include "context.hh"
+#include "grob-array.hh"
+#include "international.hh"
#include "note-column.hh"
-#include "bar.hh"
+#include "item.hh"
#include "side-position-interface.hh"
#include "staff-symbol.hh"
+#include "text-interface.hh"
+#include "volta-bracket.hh"
+#include "warn.hh"
+
+#include "translator.icc"
/*
Create Volta spanners, by reading repeatCommands property, usually
- set by Unfolded_repeat_iterator.
- */
+ set by Volta_repeat_iterator.
+*/
class Volta_engraver : public Engraver
{
public:
- TRANSLATOR_DECLARATIONS(Volta_engraver);
+ TRANSLATOR_DECLARATIONS (Volta_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void finalize ();
- virtual void stop_translation_timestep ();
- virtual void process_music ();
- virtual void create_grobs ();
-
+ void acknowledge_bar_line (Grob_info);
+
+ virtual void derived_mark () const;
+ void stop_translation_timestep ();
+ void process_music ();
+
Moment started_mom_;
- Spanner *volta_span_p_;
- Spanner *end_volta_span_p_;
- SCM staff_;
- SCM start_str_;
+ Spanner *volta_bracket_;
+ Spanner *end_volta_bracket_;
+ Spanner *volta_spanner_;
+ SCM start_string_;
};
-Volta_engraver::Volta_engraver ()
+void
+Volta_engraver::derived_mark () const
{
- staff_ = SCM_EOL;
- volta_span_p_ = 0;
- end_volta_span_p_ = 0;
+ scm_gc_mark (start_string_);
}
+Volta_engraver::Volta_engraver (Context *c)
+ : Engraver (c)
+{
+ start_string_ = SCM_EOL;
+ volta_bracket_ = 0;
+ end_volta_bracket_ = 0;
+ volta_spanner_ = 0;
+}
void
Volta_engraver::process_music ()
{
- if (unsmob_grob (staff_))
- {
- /*
- TODO: this does weird things when you open a piece with a
- volta spanner.
-
- */
- SCM staffs = get_property ("stavesFound");
-
- /*
- only put a volta on the top staff.
-
- May be this is a bit convoluted, and we should have a single
- volta engraver in score context or somesuch.
-
- */
- if (ly_car (scm_last_pair (staffs)) != staff_)
- return ;
- }
-
-
SCM cs = get_property ("repeatCommands");
- bool end = false;
- start_str_ = SCM_EOL;
- while (gh_pair_p (cs))
+ bool end = false;
+ start_string_ = SCM_EOL;
+ while (scm_is_pair (cs))
{
- SCM c = ly_car (cs);
-
- if (gh_pair_p (c) && ly_car (c) == ly_symbol2scm ("volta")
- && gh_pair_p (ly_cdr (c)))
- {
- if (ly_cadr (c) == SCM_BOOL_F)
- end = true;
- else
- start_str_ = ly_cadr (c);
- }
-
- cs = ly_cdr (cs);
+ SCM c = scm_car (cs);
+
+ if (scm_is_pair (c)
+ && scm_is_eq (scm_car (c), ly_symbol2scm ("volta"))
+ && scm_is_pair (scm_cdr (c)))
+ {
+ if (scm_is_false (scm_cadr (c)))
+ end = true;
+ else
+ start_string_ = scm_cadr (c);
+ }
+
+ cs = scm_cdr (cs);
}
- if (volta_span_p_)
+ if (volta_bracket_)
{
SCM l (get_property ("voltaSpannerDuration"));
Moment now = now_mom ();
-
- bool early_stop = unsmob_moment (l)
- && *unsmob_moment (l) <= now - started_mom_;
-
+
+ bool early_stop = unsmob<Moment> (l)
+ && *unsmob<Moment> (l) <= now - started_mom_;
+
end = end || early_stop;
}
-
- if (end && !volta_span_p_)
+ if (end && !volta_bracket_)
+ /* fixme: be more verbose. */
+ warning (_ ("cannot end volta spanner"));
+ else if (end)
{
- warning (_ ("No volta spanner to end")); // fixme: be more verbose.
+ end_volta_bracket_ = volta_bracket_;
+ volta_bracket_ = 0;
}
- else if (end)
+
+ if (volta_bracket_
+ && (scm_is_string (start_string_) || scm_is_pair (start_string_)))
{
- end_volta_span_p_ = volta_span_p_;
- volta_span_p_ =0;
+ warning (_ ("already have a volta spanner, ending that one prematurely"));
- /*
- maybe do typeset_grob () directly?
- */
+ if (end_volta_bracket_)
+ {
+ warning (_ ("also already have an ended spanner"));
+ warning (_ ("giving up"));
+ return;
+ }
- if (!gh_string_p (start_str_))
- end_volta_span_p_->set_grob_property ("last-volta", SCM_BOOL_T);
+ end_volta_bracket_ = volta_bracket_;
+ volta_bracket_ = 0;
}
- if (gh_string_p (start_str_) && volta_span_p_)
+ if (!volta_bracket_
+ && Text_interface::is_markup (start_string_))
{
- warning (_ ("Already have a volta spanner. Stopping that one prematurely."));
-
- if (end_volta_span_p_)
- {
- warning (_ ("Also have a stopped spanner. Giving up."));
- return ;
- }
-
- end_volta_span_p_ = volta_span_p_;
- volta_span_p_ = 0;
+ started_mom_ = now_mom ();
+
+ volta_bracket_ = make_spanner ("VoltaBracket", SCM_EOL);
+
+ volta_bracket_->set_property ("text", start_string_);
+
+ if (!volta_spanner_)
+ volta_spanner_ = make_spanner ("VoltaBracketSpanner", SCM_EOL);
+
+ Axis_group_interface::add_element (volta_spanner_, volta_bracket_);
}
}
-/*
- this could just as well be done in process_music (), but what the hack.
- */
void
-Volta_engraver::create_grobs ()
+Volta_engraver::acknowledge_bar_line (Grob_info i)
{
- if (!volta_span_p_ && gh_string_p (start_str_))
- {
- started_mom_ = now_mom () ;
+ if (volta_bracket_)
+ Volta_bracket_interface::add_bar (volta_bracket_, i.item ());
+ if (end_volta_bracket_)
+ Volta_bracket_interface::add_bar (end_volta_bracket_, i.item ());
- volta_span_p_ = new Spanner (get_property ("VoltaBracket"));
- Volta_spanner::set_interface (volta_span_p_);
- announce_grob (volta_span_p_,0);
- volta_span_p_->set_grob_property ("text", start_str_);
- }
+ if (volta_spanner_)
+ Side_position_interface::add_support (volta_spanner_, i.grob ());
}
void
-Volta_engraver::acknowledge_grob (Grob_info i)
+Volta_engraver::stop_translation_timestep ()
{
- if (Item* item = dynamic_cast<Item*> (i.grob_l_))
- {
- if (Note_column::has_interface (item))
- {
- if (volta_span_p_)
- Volta_spanner::add_column (volta_span_p_,item);
- }
- if (Bar::has_interface (item))
- {
- if (volta_span_p_)
- Volta_spanner::add_bar (volta_span_p_, item);
- if (end_volta_span_p_)
- Volta_spanner::add_bar (end_volta_span_p_ , item);
- }
- }
- else if (Staff_symbol::has_interface (i.grob_l_))
+ Grob *cc = unsmob<Grob> (get_property ("currentCommandColumn"));
+ Item *ci = dynamic_cast<Item *> (cc);
+
+ if (end_volta_bracket_ && !end_volta_bracket_->get_bound (RIGHT))
+ end_volta_bracket_->set_bound (RIGHT, ci);
+
+ if (volta_spanner_ && end_volta_bracket_)
+ volta_spanner_->set_bound (RIGHT, end_volta_bracket_->get_bound (RIGHT));
+
+ if (end_volta_bracket_ && !volta_bracket_)
{
- /*
- We only want to know about a single staff: then we add to the
- support. */
- if (staff_ != SCM_EOL)
- staff_ = SCM_UNDEFINED;
-
- if (staff_ != SCM_UNDEFINED)
- staff_ = i.grob_l_->self_scm();
+ for (SCM s = get_property ("stavesFound"); scm_is_pair (s); s = scm_cdr (s))
+ Side_position_interface::add_support (volta_spanner_, unsmob<Grob> (scm_car (s)));
+ volta_spanner_ = 0;
}
+
+ end_volta_bracket_ = 0;
+
+ if (volta_bracket_ && !volta_bracket_->get_bound (LEFT))
+ volta_bracket_->set_bound (LEFT, ci);
+
+ if (volta_spanner_ && volta_bracket_ && !volta_spanner_->get_bound (LEFT))
+ volta_spanner_->set_bound (LEFT, volta_bracket_->get_bound (LEFT));
}
+/*
+ TODO: should attach volta to paper-column if no bar is found.
+*/
void
-Volta_engraver::finalize ()
+Volta_engraver::boot ()
{
- if (volta_span_p_)
- {
- typeset_grob (volta_span_p_);
- }
- if (end_volta_span_p_)
- {
- typeset_grob (end_volta_span_p_);
- }
+ ADD_ACKNOWLEDGER (Volta_engraver, bar_line);
}
+ADD_TRANSLATOR (Volta_engraver,
+ /* doc */
+ "Make volta brackets.",
+ /* create */
+ "VoltaBracket "
+ "VoltaBracketSpanner ",
-void
-Volta_engraver::stop_translation_timestep ()
-{
- if (end_volta_span_p_)
- {
- typeset_grob (end_volta_span_p_);
- end_volta_span_p_ =0;
- }
-}
+ /* read */
+ "repeatCommands "
+ "voltaSpannerDuration "
+ "stavesFound ",
-/*
- TODO: should attach volta to paper-column if no bar is found.
- */
-
-ENTER_DESCRIPTION(Volta_engraver,
-/* descr */ "Make volta brackets",
-/* creats*/ "VoltaBracket",
-/* acks */ "bar-line-interface staff-symbol-interface note-column-interface",
-/* reads */ "repeatCommands voltaSpannerDuration stavesFound",
-/* write */ "");
+ /* write */
+ ""
+ );
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