-/*
- volta-engraver.cc -- implement Volta_engraver
-
+/*
+ volta-engraver.cc -- implement Volta_engraver
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+
+ (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
#include "engraver.hh"
#include "context.hh"
#include "volta-bracket.hh"
-#include "item.hh"
#include "note-column.hh"
#include "bar-line.hh"
#include "side-position-interface.hh"
/*
Create Volta spanners, by reading repeatCommands property, usually
set by Unfolded_repeat_iterator.
- */
+*/
class Volta_engraver : public Engraver
{
public:
virtual void finalize ();
virtual void stop_translation_timestep ();
virtual void process_music ();
-
+
Moment started_mom_;
Spanner *volta_span_;
Spanner *end_volta_span_;
SCM start_string_;
bool staff_eligible ();
-
};
Volta_engraver::Volta_engraver ()
end_volta_span_ = 0;
}
-
/*
TODO: this logic should be rewritten, it is buggy.
One of the problems is that we can't determine wether or not to
print the volta bracket during the first step, since that requires
acknowledging the staff.
- */
+*/
bool
Volta_engraver::staff_eligible ()
{
- SCM doit =get_property ("voltaOnThisStaff");
- if (ly_c_boolean_p (doit))
+ SCM doit = get_property ("voltaOnThisStaff");
+ if (scm_is_bool (doit))
{
return to_boolean (doit);
}
-
if (!unsmob_grob (staff_))
return false;
*/
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_c_pair_p (staffs))
- {
- programming_error ("Huh? Volta engraver can't find staffs?");
- return false;
- }
- else if (ly_car (scm_last_pair (staffs)) != staff_)
+ /* Only put a volta on the top staff.
+ Maybe this is a bit convoluted, and we should have a single
+ volta engraver in score context or somesuch. */
+ if (!scm_is_pair (staffs))
{
+ programming_error ("volta engraver can't find staffs");
return false;
}
+ else if (scm_car (scm_last_pair (staffs)) != staff_)
+ return false;
return true;
}
-
void
Volta_engraver::process_music ()
{
SCM cs = get_property ("repeatCommands");
if (!staff_eligible ())
- return ;
+ return;
-
- bool end = false;
+ bool end = false;
start_string_ = SCM_EOL;
- while (ly_c_pair_p (cs))
+ while (scm_is_pair (cs))
{
- SCM c = ly_car (cs);
+ SCM c = scm_car (cs);
- if (ly_c_pair_p (c)
- && ly_car (c) == ly_symbol2scm ("volta")
- && ly_c_pair_p (ly_cdr (c)))
+ if (scm_is_pair (c)
+ && scm_car (c) == ly_symbol2scm ("volta")
+ && scm_is_pair (scm_cdr (c)))
{
- if (ly_cadr (c) == SCM_BOOL_F)
+ if (scm_cadr (c) == SCM_BOOL_F)
end = true;
else
- start_string_ = ly_cadr (c);
+ start_string_ = scm_cadr (c);
}
-
- cs = ly_cdr (cs);
+
+ cs = scm_cdr (cs);
}
if (volta_span_)
{
SCM l (get_property ("voltaSpannerDuration"));
Moment now = now_mom ();
-
+
bool early_stop = unsmob_moment (l)
&& *unsmob_moment (l) <= now - started_mom_;
-
+
end = end || early_stop;
}
-
if (end && !volta_span_)
- {
- warning (_ ("No volta spanner to end")); // fixme: be more verbose.
- }
+ /* fixme: be more verbose. */
+ warning (_ ("can't end volta spanner"));
else if (end)
{
end_volta_span_ = volta_span_;
- volta_span_ =0;
+ volta_span_ = 0;
}
- if (volta_span_ &&
- (ly_c_string_p (start_string_) || ly_c_pair_p (start_string_)))
+ if (volta_span_
+ && (scm_is_string (start_string_) || scm_is_pair (start_string_)))
{
- warning (_ ("Already have a volta spanner. Stopping that one prematurely."));
-
+ warning (_ ("already have a volta spanner, ending that one prematurely"));
+
if (end_volta_span_)
{
- warning (_ ("Also have a stopped spanner. Giving up."));
- return ;
+ warning (_ ("also already have an ended spanner"));
+ warning (_ ("giving up"));
+ return;
}
end_volta_span_ = volta_span_;
volta_span_ = 0;
}
- if (!volta_span_ &&
- (ly_c_string_p (start_string_) || ly_c_pair_p (start_string_)))
+ if (!volta_span_
+ && (scm_is_string (start_string_) || scm_is_pair (start_string_)))
{
- started_mom_ = now_mom () ;
+ started_mom_ = now_mom ();
volta_span_ = make_spanner ("VoltaBracket", SCM_EOL);
-
volta_span_->set_property ("text", start_string_);
}
}
-
void
Volta_engraver::acknowledge_grob (Grob_info i)
{
- if (Item* item = dynamic_cast<Item*> (i.grob_))
+ if (Item *item = dynamic_cast<Item *> (i.grob ()))
{
if (Note_column::has_interface (item))
{
if (volta_span_)
- Volta_bracket_interface::add_column (volta_span_,item);
+ Volta_bracket_interface::add_column (volta_span_, item);
}
if (Bar_line::has_interface (item))
{
if (volta_span_)
Volta_bracket_interface::add_bar (volta_span_, item);
if (end_volta_span_)
- Volta_bracket_interface::add_bar (end_volta_span_ , item);
+ Volta_bracket_interface::add_bar (end_volta_span_, item);
}
}
- else if (Staff_symbol::has_interface (i.grob_))
+ else if (Staff_symbol::has_interface (i.grob ()))
{
/*
We only want to know about a single staff: then we add to the
staff_ = SCM_UNDEFINED;
if (staff_ != SCM_UNDEFINED)
- staff_ = i.grob_->self_scm ();
+ staff_ = i.grob ()->self_scm ();
}
}
{
}
-
-
-void
+void
Volta_engraver::stop_translation_timestep ()
{
if (volta_span_ && !staff_eligible ())
we need to do this here, because STAFF_ is not initialized yet
in the 1st call of process_music ()
*/
-
- volta_span_->suicide ( );
+
+ volta_span_->suicide ();
volta_span_ = 0;
}
-
+
if (end_volta_span_ && !end_volta_span_->get_bound (RIGHT))
{
- Grob * cc = unsmob_grob (get_property ("currentCommandColumn"));
- Item * ci = dynamic_cast<Item*> (cc);
+ Grob *cc = unsmob_grob (get_property ("currentCommandColumn"));
+ Item *ci = dynamic_cast<Item *> (cc);
end_volta_span_->set_bound (RIGHT, ci);
}
- end_volta_span_ =0;
+ end_volta_span_ = 0;
if (volta_span_ && !volta_span_->get_bound (LEFT))
{
- Grob * cc = unsmob_grob (get_property ("currentCommandColumn"));
- Item * ci = dynamic_cast<Item*> (cc);
+ Grob *cc = unsmob_grob (get_property ("currentCommandColumn"));
+ Item *ci = dynamic_cast<Item *> (cc);
volta_span_->set_bound (LEFT, ci);
}
-
}
/*
TODO: should attach volta to paper-column if no bar is found.
- */
-
-ENTER_DESCRIPTION (Volta_engraver,
-/* descr */ "Make volta brackets.",
-/* creats*/ "VoltaBracket",
-/* accepts */ "",
-/* acks */ "bar-line-interface staff-symbol-interface note-column-interface",
-/* reads */ "repeatCommands voltaSpannerDuration stavesFound",
-/* write */ "");
+*/
+
+ADD_TRANSLATOR (Volta_engraver,
+ /* descr */ "Make volta brackets.",
+ /* creats*/ "VoltaBracket",
+ /* accepts */ "",
+ /* acks */ "bar-line-interface staff-symbol-interface note-column-interface",
+ /* reads */ "repeatCommands voltaSpannerDuration stavesFound",
+ /* write */ "");
projects / lilypond.git / blobdiff