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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1996--2015 Han-Wen Nienhuys
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
LilyPond is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GROB_HH
#define GROB_HH
#include "box.hh"
#include "virtual-methods.hh"
#include "dimension-cache.hh"
#include "grob-interface.hh"
#include <set>
class Grob : public Smob<Grob>
{
public:
int print_smob (SCM, scm_print_state *) const;
SCM mark_smob () const;
static const char * const type_p_name_;
virtual ~Grob ();
private:
DECLARE_CLASSNAME (Grob);
void init ();
protected:
/* data */
Dimension_cache dim_cache_[NO_AXES];
Output_def *layout_;
Grob *original_;
/* SCM data */
SCM immutable_property_alist_;
SCM mutable_property_alist_;
SCM object_alist_;
/*
If this is a property, it accounts for 25% of the property
lookups.
*/
SCM interfaces_;
void substitute_object_links (SCM, SCM);
Real get_offset (Axis a) const;
SCM try_callback (SCM, SCM);
SCM try_callback_on_alist (SCM *, SCM, SCM);
void internal_set_value_on_alist (SCM *alist, SCM sym, SCM val);
public:
/* friends */
friend class Spanner;
friend class System;
friend SCM ly_grob_properties (SCM);
friend SCM ly_grob_basic_properties (SCM);
/* standard callbacks */
DECLARE_SCHEME_CALLBACK (x_parent_positioning, (SCM));
DECLARE_SCHEME_CALLBACK (y_parent_positioning, (SCM));
DECLARE_SCHEME_CALLBACK (pure_stencil_height, (SCM smob, SCM, SCM));
DECLARE_SCHEME_CALLBACK (stencil_height, (SCM smob));
DECLARE_SCHEME_CALLBACK (stencil_width, (SCM smob));
DECLARE_SCHEME_CALLBACK (pure_simple_vertical_skylines_from_extents, (SCM smob, SCM, SCM));
DECLARE_SCHEME_CALLBACK (simple_vertical_skylines_from_extents, (SCM smob));
DECLARE_SCHEME_CALLBACK (vertical_skylines_from_stencil, (SCM smob));
DECLARE_SCHEME_CALLBACK (pure_vertical_skylines_from_element_stencils, (SCM smob, SCM, SCM));
DECLARE_SCHEME_CALLBACK (vertical_skylines_from_element_stencils, (SCM smob));
DECLARE_SCHEME_CALLBACK (pure_simple_horizontal_skylines_from_extents, (SCM smob, SCM, SCM));
DECLARE_SCHEME_CALLBACK (simple_horizontal_skylines_from_extents, (SCM smob));
DECLARE_SCHEME_CALLBACK (horizontal_skylines_from_stencil, (SCM smob));
DECLARE_SCHEME_CALLBACK (pure_horizontal_skylines_from_element_stencils, (SCM smob, SCM, SCM));
DECLARE_SCHEME_CALLBACK (horizontal_skylines_from_element_stencils, (SCM smob));
/* R/O access */
Output_def *layout () const { return layout_; }
Grob *original () const { return original_; }
SCM interfaces () const { return interfaces_; }
/* life & death */
Grob (SCM basic_props);
Grob (Grob const &);
virtual Grob *clone () const;
/* forced death */
void suicide ();
bool is_live () const;
/* naming. */
string name () const;
/* Properties */
SCM get_property_alist_chain (SCM) const;
SCM internal_get_property (SCM symbol) const;
SCM internal_get_property_data (SCM symbol) const;
SCM internal_get_pure_property (SCM symbol, int start, int end) const;
SCM internal_get_maybe_pure_property (SCM symbol, bool pure, int start, int end) const;
SCM internal_get_non_callback_marker_property_data (SCM symbol) const;
SCM internal_get_object (SCM symbol) const;
void internal_set_object (SCM sym, SCM val);
void internal_del_property (SCM symbol);
void instrumented_set_property (SCM, SCM, char const *, int, char const *);
void internal_set_property (SCM sym, SCM val);
/* messages */
void warning (const string&) const;
void programming_error (const string&) const;
/* class hierarchy */
virtual System *get_system () const;
static System *get_system (Grob *);
virtual void do_break_processing ();
virtual Grob *find_broken_piece (System *) const;
virtual void discretionary_processing ();
virtual void derived_mark () const;
virtual void handle_broken_dependencies ();
virtual void handle_prebroken_dependencies ();
/* printing */
Stencil *get_stencil () const;
Stencil get_print_stencil () const;
/* interfaces */
bool internal_has_interface (SCM intf);
/* offsets */
void translate_axis (Real, Axis);
Real relative_coordinate (Grob const *refp, Axis) const;
Real parent_relative (Grob const *refp, Axis) const;
Real pure_relative_y_coordinate (Grob const *refp, int start, int end);
Real maybe_pure_coordinate (Grob const *refp, Axis a, bool pure, int start, int end);
/* extents */
Interval extent (Grob *refpoint, Axis) const;
void flush_extent_cache (Axis);
virtual Interval pure_y_extent (Grob *refpoint, int start, int end);
Interval maybe_pure_extent (Grob *refpoint, Axis, bool pure, int start, int end);
/* refpoints */
Grob *common_refpoint (Grob const *s, Axis a) const;
void set_parent (Grob *e, Axis);
Grob *get_parent (Axis a) const;
void fixup_refpoint ();
/* vertical ordering */
static bool internal_vertical_less (Grob *g1, Grob *g2, bool pure);
static Grob *get_root_vertical_alignment (Grob *g);
static Grob *get_vertical_axis_group (Grob *g);
static bool vertical_less (Grob *g1, Grob *g2);
static bool pure_vertical_less (Grob *g1, Grob *g2);
static int get_vertical_axis_group_index (Grob *g);
/* skylines */
virtual Interval_t<int> spanned_rank_interval () const;
virtual bool pure_is_visible (int start, int end) const;
bool check_cross_staff (Grob *common);
static bool less (Grob *g1, Grob *g2);
static SCM maybe_pure_internal_simple_skylines_from_extents (Grob *, Axis, bool, int, int, bool, bool);
static SCM internal_skylines_from_element_stencils (Grob *me, Axis a, bool pure, int beg, int end);
static SCM internal_skylines_from_element_stencils (SCM, Axis);
};
template <class T>
inline bool has_interface(Grob *g)
{
return g && g->internal_has_interface (Grob_interface<T>::interface_symbol_);
}
/* unification */
void uniquify (vector <Grob *> &);
/* refpoints */
Grob *common_refpoint_of_list (SCM elt_list, Grob *, Axis a);
Grob *common_refpoint_of_array (vector<Grob *> const &, Grob *, Axis a);
Grob *common_refpoint_of_array (set<Grob *> const &, Grob *, Axis a);
System *get_root_system (Grob *me);
/* extents */
Interval robust_relative_extent (Grob *, Grob *, Axis);
/* offset/extent callbacks. */
void add_offset_callback (Grob *g, SCM proc, Axis a);
void chain_offset_callback (Grob *g, SCM proc, Axis a);
void chain_callback (Grob *g, SCM proc, SCM sym);
SCM axis_offset_symbol (Axis a);
SCM axis_parent_positioning (Axis a);
SCM call_pure_function (SCM unpure, SCM args, int start, int end);
void set_nested_property (Grob *, SCM property_path, SCM value);
#endif /* GROB_HH */
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