source file of the GNU LilyPond music typesetter
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "bar.hh"
+#include "bar-line.hh"
+#include "context.hh"
#include "score-engraver.hh"
-#include "musical-request.hh"
-#include "engraver-group-engraver.hh"
#include "warn.hh"
#include "item.hh"
-#include "engraver.hh"
+
+#include "translator.icc"
/*
generate bars. Either user ("|:"), or default (new measure)
-
- */
+*/
class Bar_engraver : public Engraver
{
public:
- Bar_engraver();
- VIRTUAL_COPY_CONS(Translator);
- void request_bar (String type_str);
-
+ TRANSLATOR_DECLARATIONS (Bar_engraver);
+ void request_bar (string type_string);
+
protected:
virtual void finalize ();
- virtual void stop_translation_timestep();
- virtual void create_grobs ();
+ void stop_translation_timestep ();
+ void process_acknowledged ();
private:
void typeset_bar ();
void create_bar ();
- Item * bar_p_;
+ Item *bar_;
};
-Bar_engraver::Bar_engraver()
+Bar_engraver::Bar_engraver ()
{
- bar_p_ =0;
+ bar_ = 0;
}
void
Bar_engraver::create_bar ()
{
- if (!bar_p_)
+ if (!bar_)
{
- bar_p_ = new Item (get_property ("BarLine"));
-
+ bar_ = make_item ("BarLine", SCM_EOL);
SCM gl = get_property ("whichBar");
- if (scm_equal_p (gl, bar_p_->get_grob_property ("glyph")) != SCM_BOOL_T)
- bar_p_->set_grob_property ("glyph", gl);
-
- announce_grob (bar_p_, 0);
+ if (scm_equal_p (gl, bar_->get_property ("glyph")) != SCM_BOOL_T)
+ bar_->set_property ("glyph", gl);
}
}
}
/*
- Bar_engraver should come *after* any engravers that expect bars to
- modify whichBar in deprecated_process_music () be typeset
+ Bar_engraver should come *after* any engravers that
+ modify whichBar
+
+ This is a little hairy : whichBar may be set by
+ Repeat_acknowledge_engraver::process_music, which is at score
+ context. This means that grobs could should be created after
+ process_music. We do stuff process_acknowledged (), just to be
+ on the safe side.
*/
+
void
-Bar_engraver::create_grobs ()
+Bar_engraver::process_acknowledged ()
{
- if (!bar_p_ && gh_string_p (get_property ("whichBar")))
- {
- create_bar ();
- }
+ if (!bar_ && scm_is_string (get_property ("whichBar")))
+ create_bar ();
}
void
Bar_engraver::typeset_bar ()
{
- if (bar_p_)
- {
- typeset_grob (bar_p_);
- bar_p_ =0;
- }
+ bar_ = 0;
}
/*
- lines may only be broken if there is a barline in all staffs
+ lines may only be broken if there is a barline in all staves
*/
-void
-Bar_engraver::stop_translation_timestep()
+void
+Bar_engraver::stop_translation_timestep ()
{
- if (!bar_p_)
- {
- Score_engraver * e = 0;
- Translator * t = daddy_grav_l ();
- for (; !e && t; t = t->daddy_trans_l_)
- {
- e = dynamic_cast<Score_engraver*> (t);
- }
-
- if (!e)
- programming_error ("No score engraver!");
- else
- e->forbid_breaks (); // guh. Use properties!
- }
+ if (!bar_)
+ context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
else
typeset_bar ();
}
-ADD_THIS_TRANSLATOR(Bar_engraver);
+ADD_TRANSLATOR (Bar_engraver,
+ /* doc */ "Create barlines. This engraver is controlled through the "
+ "@code{whichBar} property. If it has no bar line to create, it will forbid a linebreak at this point",
+ /* create */ "BarLine",
+ /* read */ "whichBar",
+ /* write */ "forbidBreak");