/*
- new-chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
+ percent-repeat-engraver.cc -- implement Percent_repeat_engraver
source file of the GNU LilyPond music typesetter
- (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg <mandolaerik@gmail.com>
*/
-#include "repeated-music.hh"
+
+#include "score-engraver.hh"
+
+#include "bar-line.hh"
#include "global-context.hh"
-#include "warn.hh"
+#include "international.hh"
+#include "item.hh"
#include "misc.hh"
+#include "repeated-music.hh"
+#include "side-position-interface.hh"
#include "spanner.hh"
-#include "item.hh"
-#include "percent-repeat-iterator.hh"
-#include "bar-line.hh"
-#include "score-engraver.hh"
-
-/**
- This acknowledges repeated music with "percent" style. It typesets
- a % sign.
-
- TODO:
+#include "stream-event.hh"
+#include "warn.hh"
- - BEAT case: Create items for single beat repeats, i.e. c4 / / /
+#include "translator.icc"
- - DOUBLE_MEASURE case: attach a % to an appropriate barline.
+/*
+* TODO: Create separate Double_percent_repeat_engraver?
+* Or, at least move double percent handling to Slash_repeat_engraver
*/
+
class Percent_repeat_engraver : public Engraver
{
void typeset_perc ();
+ bool check_count_visibility (SCM count);
public:
TRANSLATOR_DECLARATIONS (Percent_repeat_engraver);
+
protected:
- Music *repeat_;
+ Stream_event *percent_event_;
- /// moment (global time) where beam started.
- Moment start_mom_;
+ /// moment (global time) where percent started.
Moment stop_mom_;
+ Moment start_mom_;
- /// location within measure where beam started.
- Moment beam_start_location_;
- Moment next_moment_;
- Moment body_length_;
-
- enum
+ enum Repeat_sign_type
{
UNKNOWN,
MEASURE,
DOUBLE_MEASURE,
- }
- repeat_sign_type_;
+ };
+ Repeat_sign_type repeat_sign_type_;
- Item *double_percent_;
- Spanner *perc_;
- Spanner *finished_perc_;
+ Spanner *percent_;
+ Spanner *percent_counter_;
+
+
+ Grob *first_command_column_;
+ Moment command_moment_;
+
protected:
virtual void finalize ();
- virtual bool try_music (Music *);
+ DECLARE_TRANSLATOR_LISTENER (percent);
+
void stop_translation_timestep ();
void start_translation_timestep ();
void process_music ();
Percent_repeat_engraver::Percent_repeat_engraver ()
{
- perc_ = 0;
- finished_perc_ = 0;
- repeat_ = 0;
+ percent_ = 0;
+ percent_counter_ = 0;
+ percent_event_ = 0;
- double_percent_ = 0;
+ first_command_column_ = 0;
+ command_moment_ = Moment (-1);
}
-bool
-Percent_repeat_engraver::try_music (Music *m)
+void
+Percent_repeat_engraver::start_translation_timestep ()
{
- if (m->is_mus_type ("repeated-music")
- && m->get_property ("iterator-ctor")
- == Percent_repeat_iterator::constructor_proc
- && !repeat_)
+ if (now_mom ().main_part_ != command_moment_.main_part_)
{
- body_length_ = Repeated_music::body_get_length (m);
- int count = Repeated_music::repeat_count (m);
-
- Moment now = now_mom ();
- start_mom_ = now;
- stop_mom_ = start_mom_ + Moment (count) * body_length_;
- next_moment_ = start_mom_ + body_length_;
-
- Moment meas_len (robust_scm2moment (get_property ("measureLength"), Moment (1)));
- if (meas_len == body_length_)
- repeat_sign_type_ = MEASURE;
- else if (Moment (2) * meas_len == body_length_)
- repeat_sign_type_ = DOUBLE_MEASURE;
- else
- {
- warning (_f ("can't handle a percent repeat of length: %s",
- body_length_.to_string ()));
- return false;
- }
+ first_command_column_ = unsmob_grob (get_property ("currentCommandColumn"));
+ command_moment_ = now_mom ();
+ }
- repeat_ = m;
+ if (stop_mom_.main_part_ == now_mom ().main_part_)
+ {
+ if (percent_)
+ typeset_perc ();
+ percent_event_ = 0;
+ repeat_sign_type_ = UNKNOWN;
+ }
+}
- Global_context *global = get_global_context ();
- for (int i = 1; i < count; i++)
+IMPLEMENT_TRANSLATOR_LISTENER (Percent_repeat_engraver, percent);
+void
+Percent_repeat_engraver::listen_percent (Stream_event *ev)
+{
+ if (!percent_event_)
+ {
+ Moment body_length = get_event_length (ev);
+ Moment meas_len (robust_scm2moment (get_property ("measureLength"),
+ Moment (1)));
+ if (meas_len == body_length)
{
- Moment m = next_moment_ + Moment (i) * body_length_;
- global->add_moment_to_process (m);
-
- /* bars between % too. */
- if (repeat_sign_type_ == DOUBLE_MEASURE)
- global->add_moment_to_process (m - meas_len);
+ repeat_sign_type_ = MEASURE;
+ start_mom_ = now_mom ();
+ stop_mom_ = now_mom () + body_length;
+ get_global_context ()->add_moment_to_process (stop_mom_);
}
-
- if (repeat_sign_type_ == DOUBLE_MEASURE)
- next_moment_ += meas_len;
-
- return true;
+ else if (Moment (2) * meas_len == body_length)
+ {
+ repeat_sign_type_ = DOUBLE_MEASURE;
+ start_mom_ = now_mom () + meas_len;
+ stop_mom_ = now_mom () + body_length; /* never used */
+ get_global_context ()->add_moment_to_process (start_mom_);
+ }
+ else
+ {
+ /*
+ don't warn about percent repeats: slash repeats are not
+ exactly 1 or 2 measures long.
+ */
+ return;
+ }
+ percent_event_ = ev;
}
-
- return false;
+ else
+ /* print a warning: no assignment happens because
+ percent_event_ != 0 */
+ ASSIGN_EVENT_ONCE (percent_event_, ev);
}
void
Percent_repeat_engraver::process_music ()
{
- if (repeat_ && now_mom () == next_moment_)
+ if (percent_event_ && now_mom ().main_part_ == start_mom_.main_part_)
{
if (repeat_sign_type_ == MEASURE)
{
- finished_perc_ = perc_;
- typeset_perc ();
- perc_ = make_spanner ("PercentRepeat", repeat_->self_scm ());
- SCM col = get_property ("currentCommandColumn");
- perc_->set_bound (LEFT, unsmob_grob (col));
+ if (percent_)
+ typeset_perc ();
+
+ percent_ = make_spanner ("PercentRepeat", percent_event_->self_scm ());
+
+ Grob *col = first_command_column_;
+ percent_->set_bound (LEFT, col);
+
+ SCM count = percent_event_->get_property ("repeat-count");
+ if (count != SCM_EOL && to_boolean (get_property ("countPercentRepeats"))
+ && check_count_visibility (count))
+ {
+ percent_counter_
+ = make_spanner ("PercentRepeatCounter", percent_event_->self_scm ());
+
+ SCM text = scm_number_to_string (count, scm_from_int (10));
+ percent_counter_->set_property ("text", text);
+ percent_counter_->set_bound (LEFT, col);
+ Side_position_interface::add_support (percent_counter_,
+ percent_);
+ percent_counter_->set_parent (percent_, Y_AXIS);
+ }
+ else
+ percent_counter_ = 0;
}
else if (repeat_sign_type_ == DOUBLE_MEASURE)
{
- double_percent_ = make_item ("DoublePercentRepeat", repeat_->self_scm ());
-
- /*
- forbid breaks on a % line. Should forbid all breaks, really.
-
- Ugh. Why can't this be regular communication between
- contexts?
- */
- get_score_engraver ()->forbid_breaks ();
+ Item *double_percent = make_item ("DoublePercentRepeat", percent_event_->self_scm ());
+
+ SCM count = percent_event_->get_property ("repeat-count");
+ if (count != SCM_EOL && to_boolean (get_property ("countPercentRepeats"))
+ && check_count_visibility (count))
+ {
+ Item *double_percent_counter = make_item ("DoublePercentRepeatCounter",
+ percent_event_->self_scm ());
+
+ SCM text = scm_number_to_string (count,
+ scm_from_int (10));
+ double_percent_counter->set_property ("text", text);
+
+ Side_position_interface::add_support (double_percent_counter,
+ double_percent);
+ double_percent_counter->set_parent (double_percent, Y_AXIS);
+ double_percent_counter->set_parent (double_percent, X_AXIS);
+ }
+
+ /* forbid breaks on a % line. Should forbid all breaks, really. */
+ context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
+
+ /* No more processing needed. */
+ repeat_sign_type_ = UNKNOWN;
}
- next_moment_ = next_moment_ + body_length_;
}
}
void
Percent_repeat_engraver::finalize ()
{
- typeset_perc ();
- if (perc_)
+ if (percent_)
{
- repeat_->origin ()->warning (_ ("unterminated percent repeat"));
- perc_->suicide ();
+ percent_event_->origin ()->warning (_ ("unterminated percent repeat"));
+ percent_->suicide ();
+ percent_counter_->suicide ();
}
}
void
Percent_repeat_engraver::typeset_perc ()
{
- if (finished_perc_)
+ if (percent_)
{
- SCM col = get_property ("currentCommandColumn");
- finished_perc_->set_bound (RIGHT, unsmob_grob (col));
- finished_perc_ = 0;
- }
+ Grob *col = first_command_column_;
+
+ percent_->set_bound (RIGHT, col);
+ percent_ = 0;
- double_percent_ = 0;
+ if (percent_counter_)
+ percent_counter_->set_bound (RIGHT, col);
+ percent_counter_ = 0;
+ }
}
-void
-Percent_repeat_engraver::start_translation_timestep ()
+bool
+Percent_repeat_engraver::check_count_visibility (SCM count)
{
- if (stop_mom_ == now_mom ())
- {
- if (perc_)
- {
- finished_perc_ = perc_;
- typeset_perc ();
- }
- repeat_ = 0;
- perc_ = 0;
- repeat_sign_type_ = UNKNOWN;
- }
+ SCM proc = get_property ("repeatCountVisibility");
+ return (ly_is_procedure (proc) && to_boolean (scm_call_2 (proc,
+ count,
+ context ()->self_scm ())));
}
+
void
Percent_repeat_engraver::stop_translation_timestep ()
{
- typeset_perc ();
}
-#include "translator.icc"
-
ADD_TRANSLATOR (Percent_repeat_engraver,
- /* doc */ "Make whole bar and double bar repeats.",
- /* create */ "PercentRepeat DoublePercentRepeat",
- /* accept */ "repeated-music",
- /* read */ "measureLength currentCommandColumn",
- /* write */ "");
+ /* doc */
+ "Make whole bar and double bar repeats.",
+
+ /* create */
+ "DoublePercentRepeat "
+ "DoublePercentRepeatCounter "
+ "PercentRepeat "
+ "PercentRepeatCounter ",
+
+ /* read */
+ "countPercentRepeats "
+ "currentCommandColumn "
+ "measureLength "
+ "repeatCountVisibility ",
+
+ /* write */
+ "forbidBreak "
+ );
projects / lilypond.git / blobdiff