X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fcontext.hh;h=648a52ae3b7f089a2f9d6248ca1c1507f7660464;hb=52981e6e7d59d72f61f6618dd7e6ba40a5559d9e;hp=46d836e26dfad94e1e9b26dadfa370e817fb7fca;hpb=81f1a254d08cbde22d0bac2b366e199a3efebd30;p=lilypond.git diff --git a/lily/include/context.hh b/lily/include/context.hh index 46d836e26d..648a52ae3b 100644 --- a/lily/include/context.hh +++ b/lily/include/context.hh @@ -1,102 +1,154 @@ /* context.hh -- declare Context - + source file of the GNU LilyPond music typesetter - - (c) 2004 Han-Wen Nienhuys + + (c) 2004--2007 Han-Wen Nienhuys */ #ifndef CONTEXT_HH #define CONTEXT_HH +#include "listener.hh" #include "moment.hh" +#include "std-vector.hh" +#include "virtual-methods.hh" +#include "scm-hash.hh" #include "lily-proto.hh" - class Context { Scheme_hash_table *properties_dict () const; Context (Context const &src); - - DECLARE_SMOBS (Context, dummy); + DECLARE_SMOBS (Context); + DECLARE_CLASSNAME(Context); void terminate (); private: - friend class Interpretation_context_handle; + friend class Context_handle; int iterator_count_; - bool init_; + /* Used internally by create_context */ + Stream_event *infant_event_; + protected: - Context * daddy_context_; + Context *daddy_context_; + /* The used Context_def */ SCM definition_; + /* Additions to the Context_def, given by \with */ + SCM definition_mods_; + SCM properties_scm_; SCM context_list_; SCM accepts_list_; SCM aliases_; - SCM implementation_; - String id_string_; + 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_; + + // Translator_group is allowed to set implementation_. + friend class Translator_group; + // Context_def::instantiate initialises some protected members. friend class Context_def; + // UGH! initialises implementation_ + friend SCM ly_make_global_translator (SCM); + + DECLARE_LISTENER (set_property_from_event); + DECLARE_LISTENER (unset_property_from_event); + public: - String id_string () const { return id_string_; } + string id_string () const { return id_string_; } SCM children_contexts () const { return context_list_; } SCM default_child_context_name () const; - Translator_group* implementation () const; + Dispatcher *event_source () const { return event_source_; } + Dispatcher *events_below () const { return events_below_; } + void internal_send_stream_event (SCM type, Input *origin, 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; Context (); /* properties: */ - void execute_pushpop_property (SCM prop, SCM sym, SCM val); SCM internal_get_property (SCM name_sym) const; SCM properties_as_alist () const; - void internal_set_property (SCM var_sym, SCM value); - Context *where_defined (SCM name_sym) const; + Context *where_defined (SCM name_sym, SCM *value) const; void unset_property (SCM var_sym); - - Context *remove_context (Context *trans); + void instrumented_set_property (SCM, SCM, const char*, int, const char*); + void internal_set_property (SCM var_sym, SCM value); + + Context *create_context (Context_def *, string, SCM); + DECLARE_LISTENER (create_context_from_event); + DECLARE_LISTENER (acknowledge_infant); + DECLARE_LISTENER (remove_context); + DECLARE_LISTENER (change_parent); + void disconnect_from_parent (); void check_removal (); - String context_name () const; + string context_name () const; + SCM context_name_symbol () const; Global_context *get_global_context () const; - - virtual Score_context * get_score_context () const; + + virtual Context *get_score_context () const; virtual Output_def *get_output_def () const; virtual Moment now_mom () const; virtual Context *get_default_interpreter (); bool is_alias (SCM) const; - void add_alias (SCM); + void add_alias (SCM); void add_context (Context *trans); bool is_bottom_context () const; bool is_removable () const; - bool try_music (Music *); Context *find_create_context (SCM context_name, - String id, SCM ops); - Link_array path_to_acceptable_context (SCM alias, - Output_def*) const; - + string id, SCM ops); + Context *create_unique_context (SCM context_name, string context_id, + SCM ops); + vector path_to_acceptable_context (SCM alias) const; }; /* - Context arg? - */ + Context arg? +*/ void apply_property_operations (Context *tg, SCM pre_init_ops); void execute_pushpop_property (Context *trg, SCM prop, SCM eltprop, SCM val); +void execute_general_pushpop_property (Context *context, + SCM context_property, SCM grob_property_path, SCM val); SCM updated_grob_properties (Context *tg, SCM sym); Context *find_context_below (Context *where, - SCM type_sym, String id); + SCM type_sym, string id); bool melisma_busy (Context *); Context *get_voice_to_lyrics (Context *lyrics); Grob *get_current_note_head (Context *voice); Grob *get_current_rest (Context *voice); -Context *unsmob_context (SCM); - -DECLARE_UNSMOB(Context, context); +DECLARE_UNSMOB (Context, context); + +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, origin, ...) \ +{ \ + SCM props[] = { __VA_ARGS__, 0 }; \ + ctx->internal_send_stream_event (ly_symbol2scm (type), origin, props); \ +} + +SCM nested_property_alist (SCM alist, SCM prop_path, SCM value); +SCM nested_property_revert_alist (SCM alist, SCM prop_path); +SCM evict_from_alist (SCM, SCM, SCM); #endif /* CONTEXT_HH */