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/*
grob.hh -- declare Grob
(c) 1996-1999--2002 Han-Wen Nienhuys
*/
#ifndef STAFFELEM_HH
#define STAFFELEM_HH
#include "parray.hh"
#include "virtual-methods.hh"
#include "lily-guile.hh"
#include "lily-proto.hh"
#include "smobs.hh"
#include "dimension-cache.hh"
#include "grob-interface.hh"
/**
for administration of what was done already
*/
enum Grob_status {
ORPHAN=0, // not yet added to Paper_score
VIRGIN,
PRECALCING,
PRECALCED, // calcs before spacing done
POSTCALCING, // busy calculating. This is used to trap cyclic deps.
POSTCALCED, // after spacing calcs done
};
typedef void (Grob::*Grob_method_pointer) (void);
#define get_grob_property(x) internal_get_grob_property(ly_symbol2scm(x))
#define set_grob_property(x,y) internal_set_grob_property(ly_symbol2scm(x),y)
/*
Basic output object.
*/
class Grob {
public:
SCM immutable_property_alist_;
SCM mutable_property_alist_;
Grob *original_l_;
/**
Administration: Where are we?. This is mainly used by Super_element and
Grob::calcalute_dependencies ()
0 means ORPHAN,
*/
char status_c_;
/*
IDEA: make this a global variable. This is the same for all
elements, I think it is safe to assume that we will not have
scores being formatted multithreadedly.
*/
Paper_score *pscore_l_;
Dimension_cache dim_cache_[NO_AXES];
Grob (SCM basic_props);
Grob (Grob const&);
String name () const;
/*
properties
*/
SCM internal_get_grob_property (SCM) const;
void internal_set_grob_property (SCM, SCM val);
void warning (String)const;
void programming_error (String)const;
void set_elt_pointer (const char*, SCM val);
friend class Property_engraver; // UGHUGHUGH.
SCM remove_grob_property (const char* nm);
/*
related classes.
*/
Paper_def *paper_l () const;
/**
add a dependency. It may be the 0 pointer, in which case, it is ignored.
*/
void add_dependency (Grob*);
virtual System * line_l () const;
bool linked_b () const;
VIRTUAL_COPY_CONS (Grob);
/**
Recursively track all dependencies of this Grob. The
status_c_ field is used as a mark-field. It is marked with
#busy# during execution of this function, and marked with #final#
when finished.
#funcptr# is the function to call to update this element.
*/
void calculate_dependencies (int final, int busy, SCM funcname);
virtual void do_break_processing ();
virtual Grob *find_broken_piece (System*) const;
virtual void discretionary_processing ();
virtual SCM do_derived_mark ();
Molecule * get_molecule () const;
SCM get_uncached_molecule () const;
void suicide ();
DECLARE_SCHEME_CALLBACK (preset_extent, (SCM smob, SCM axis));
DECLARE_SCHEME_CALLBACK (point_dimension_callback, (SCM smob, SCM axis));
DECLARE_SCHEME_CALLBACK (molecule_extent, (SCM smob, SCM axis));
static SCM ly_set_grob_property (SCM, SCM,SCM);
static SCM ly_get_grob_property (SCM, SCM);
bool internal_has_interface (SCM intf);
static bool has_interface (Grob*me);
virtual void handle_broken_dependencies ();
virtual void handle_prebroken_dependencies ();
DECLARE_SMOBS (Grob,foo);
void init ();
public:
bool empty_b (Axis a) const;
Interval extent (Grob * refpoint, Axis) const;
void translate_axis (Real, Axis);
Real relative_coordinate (Grob const* refp, Axis) const;
Grob*common_refpoint (Grob const* s, Axis a) const;
// duh. slim down interface here. (todo)
bool has_offset_callback_b (SCM callback, Axis)const;
void add_offset_callback (SCM callback, Axis);
bool has_extent_callback_b (SCM, Axis)const;
void set_extent (SCM , Axis);
Real get_offset (Axis a) const;
void set_parent (Grob* e, Axis);
Grob *get_parent (Axis a) const { return dim_cache_[a].parent_l_; }
DECLARE_SCHEME_CALLBACK (fixup_refpoint, (SCM));
};
DECLARE_UNSMOB(Grob,grob);
Spanner* unsmob_spanner (SCM );
Item* unsmob_item (SCM );
Grob*common_refpoint_of_list (SCM elt_list, Grob * , Axis a);
Grob*common_refpoint_of_array (Link_array<Grob> const&, Grob * , Axis a);
void set_break_subsititution (SCM criterion);
SCM do_break_substitution (SCM);
#endif // STAFFELEM_HH
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