Fix some bugs in the dynamic engraver and PostScript backend

[lilypond.git] / lily / include / context.hh

diff --git a/lily/include/context.hh b/lily/include/context.hh
index 6a2fcb0d22480d8b77e75d8dae64c65c51324cb3..5a7eb92687a522dd0f1f7043f0edf6cabd223341 100644 (file)
--- a/lily/include/context.hh
+++ b/lily/include/context.hh
@@ -10,6 +10,7 @@
 #define CONTEXT_HH
 
 
+#include "std-vector.hh"
 #include "moment.hh"
 #include "lily-proto.hh"
 #include "virtual-methods.hh"
@@ -30,8 +31,12 @@ private:
   bool init_;
 
 protected:
+  int unique_;
   Context *daddy_context_;
+  /* The used Context_def */
   SCM definition_;
+  /* Additions to the Context_def, given by \with */
+  SCM definition_mods_;
   Context_key_manager key_manager_;
   
   SCM properties_scm_;
@@ -40,6 +45,13 @@ protected:
   SCM aliases_;
   Translator_group *implementation_;
   string id_string_;
+  
+  /* Events reported in the context is sent to this dispatcher. */
+  Dispatcher *event_source_;
+
+  /* Events reported to this context or recursively in any of its
+     children, are sent to this dispatcher. */
+  Dispatcher *events_below_;
 
   friend class Context_def;
   void clear_key_disambiguations ();
@@ -53,6 +65,14 @@ public:
   string id_string () const { return id_string_; }
   SCM children_contexts () const { return context_list_; }
   SCM default_child_context_name () const;
+  int get_unique() { return unique_; }
+
+  Dispatcher *event_source () const { return event_source_; }
+  Dispatcher *events_below () const { return events_below_; }
+  void internal_send_stream_event (SCM type, SCM props[]);
+
+  SCM get_definition () const { return definition_; }
+  SCM get_definition_mods () const { return definition_mods_; }
 
   Translator_group *implementation () const { return implementation_; }
   Context *get_parent_context () const;
@@ -113,5 +133,12 @@ Moment measure_position (Context const *context);
 Rational measure_length (Context const *context);
 void set_context_property_on_children (Context *trans, SCM sym, SCM val);
 
+/* Shorthand for creating and broadcasting stream events. */
+#define send_stream_event(ctx, type, ...)                              \
+{                                                                      \
+  SCM props[] = { __VA_ARGS__, 0 };                                    \
+  ctx->internal_send_stream_event (ly_symbol2scm (type), props);       \
+}
+
 #endif /* CONTEXT_HH */