/*
- output-property-engraver.cc -- implement Output_property_engraver
+ output-property-engraver.cc -- implement Output_property_engraver
source file of the GNU LilyPond music typesetter
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "output-property.hh"
#include "engraver.hh"
-#include "score-element.hh"
+#include "grob.hh"
+#include "context.hh"
+
+#include "translator.icc"
+
class Output_property_engraver : public Engraver
{
-public:
- VIRTUAL_COPY_CONS(Translator);
+ TRANSLATOR_DECLARATIONS (Output_property_engraver);
protected:
-
- Link_array<Output_property> props_;
+ Link_array<Music> props_;
+ DECLARE_ACKNOWLEDGER (grob)
- virtual void do_pre_move_processing ();
- virtual void acknowledge_element (Score_element_info);
- virtual bool do_try_music (Music*);
+ void stop_translation_timestep ();
+ virtual bool try_music (Music*);
};
bool
-Output_property_engraver::do_try_music (Music* m)
+Output_property_engraver::try_music (Music* m)
{
- if (Output_property * o = dynamic_cast<Output_property*> (m))
+ if (m->is_mus_type ("layout-instruction"))
{
- props_.push (o);
+ props_.push (m);
return true;
}
return false;
}
void
-Output_property_engraver::acknowledge_element (Score_element_info inf)
+Output_property_engraver::acknowledge_grob (Grob_info inf)
{
- for (int i=props_.size (); i--; )
+ for (int i = props_.size (); i--;)
{
- Output_property * o = props_[i];
- SCM pred = gh_car (o->pred_sym_val_list_);
-
- /*
- should typecheck pred.
- */
- SCM result=gh_apply (pred,
- gh_list (inf.elem_l_->self_scm_, SCM_UNDEFINED));
- if (to_boolean (result))
- {
- Score_element::ly_set_elt_property (inf.elem_l_->self_scm_,
- gh_cadr (o->pred_sym_val_list_),
- gh_caddr (o->pred_sym_val_list_));
- }
+ Music *o = props_[i];
+ Context *d = inf.context ();
+ SCM proc = o->get_property ("procedure");
+ scm_call_3 (proc,
+ inf.grob ()->self_scm (),
+ d->self_scm (),
+ context ()->self_scm ());
}
}
void
-Output_property_engraver::do_pre_move_processing ()
+Output_property_engraver::stop_translation_timestep ()
{
props_.clear ();
}
-ADD_THIS_TRANSLATOR(Output_property_engraver);
+Output_property_engraver::Output_property_engraver ()
+{
+}
+
+ADD_ACKNOWLEDGER (Output_property_engraver,grob);
+ADD_TRANSLATOR (Output_property_engraver,
+
+ /* doc */
+ "Apply a procedure to any grob acknowledged. ",
+
+ /* create */
+ "",
+
+ /* accept */
+ "layout-instruction",
+
+ /* read */
+ "",
+
+ /* write */
+ "");