source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "property-iterator.hh"
-#include "translation-property.hh"
-#include "translator-group.hh"
+
+#include "context-def.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "music.hh"
+
+bool check_grob (Music *mus, SCM sym);
+
+/**
+ There is no real processing to a property: just lookup the
+ translation unit, and set the property.
+*/
+void
+Property_iterator::process (Moment m)
+{
+ send_stream_event (get_outlet (), "SetProperty", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), get_music ()->get_property ("symbol"),
+ ly_symbol2scm ("value"), get_music ()->get_property ("value"));
+
+ Simple_music_iterator::process (m);
+}
+
+void
+Property_unset_iterator::process (Moment m)
+{
+ SCM sym = get_music ()->get_property ("symbol");
+ send_stream_event (get_outlet (), "UnsetProperty", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym);
+
+ Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 2);
+SCM
+Property_iterator::once_finalization (SCM ctx, SCM music)
+{
+ Music *m = unsmob_music (music);
+ Context *c = unsmob_context (ctx);
+
+ send_stream_event (c, "UnsetProperty", m->origin (),
+ ly_symbol2scm ("symbol"), m->get_property ("symbol"));
+ return SCM_UNSPECIFIED;
+}
+
+void
+Property_iterator::do_quit ()
+{
+ if (to_boolean (get_music ()->get_property ("once")))
+ {
+ SCM trans = get_outlet ()->self_scm ();
+ SCM music = get_music ()->self_scm ();
+
+ Global_context *tg = get_outlet ()->get_global_context ();
+ tg->add_finalization (scm_list_n (once_finalization_proc,
+ trans, music, SCM_UNDEFINED));
+ }
+}
+
+bool
+check_grob (Music *mus, SCM sym)
+{
+ bool g = to_boolean (scm_object_property (sym, ly_symbol2scm ("is-grob?")));
+
+ if (!g)
+ mus->origin ()->warning (_f ("not a grob name, `%s'",
+ ly_symbol2string (sym)));
+
+ return g;
+}
+
+SCM
+get_property_path (Music *m)
+{
+ SCM grob_property_path = m->get_property ("grob-property-path");
+
+ SCM eprop = m->get_property ("grob-property");
+ if (scm_is_symbol (eprop))
+ {
+ grob_property_path = scm_list_1 (eprop);
+ }
+
+ return grob_property_path;
+}
void
-Property_iterator::do_process_and_next (Moment m)
+Push_property_iterator::process (Moment m)
+{
+ SCM sym = get_music ()->get_property ("symbol");
+ if (check_grob (get_music (), sym))
+ {
+ SCM grob_property_path = get_property_path (get_music ());
+ SCM val = get_music ()->get_property ("grob-value");
+
+ if (to_boolean (get_music ()->get_property ("pop-first"))
+ && !to_boolean (get_music ()->get_property ("once")))
+ send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
+
+ send_stream_event (get_outlet (), "Override", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path,
+ ly_symbol2scm ("value"), val);
+ }
+ Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
+SCM
+Push_property_iterator::once_finalization (SCM ctx, SCM music)
{
- if (property_l()->var_str_.length_i ())
- report_to_l ()->set_property (property_l()->var_str_, property_l()->value_);
- Music_iterator::do_process_and_next (m);
+ Music *mus = unsmob_music (music);
+ Context *c = unsmob_context (ctx);
+
+ SCM sym = mus->get_property ("symbol");
+ if (check_grob (mus, sym))
+ {
+ SCM grob_property_path = get_property_path (mus);
+
+ send_stream_event (c, "Revert", mus->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
+ }
+ return SCM_UNSPECIFIED;
}
+void
+Push_property_iterator::do_quit ()
+{
+ if (to_boolean (get_music ()->get_property ("once")))
+ {
+ SCM trans = get_outlet ()->self_scm ();
+ SCM music = get_music ()->self_scm ();
+ Global_context *tg = get_outlet ()->get_global_context ();
+ tg->add_finalization (scm_list_n (once_finalization_proc,
+ trans, music, SCM_UNDEFINED));
+ }
+}
-Translation_property*
-Property_iterator::property_l () const
+void
+Pop_property_iterator::process (Moment m)
{
- return (Translation_property*) music_l_;
+ SCM sym = get_music ()->get_property ("symbol");
+
+ if (check_grob (get_music (), sym))
+ {
+ SCM grob_property_path = get_property_path (get_music ());
+
+ send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
+ }
+ Simple_music_iterator::process (m);
}
+
+IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);