2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2015 Han-Wen Nienhuys
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
24 #include "virtual-methods.hh"
25 #include "dimension-cache.hh"
26 #include "grob-interface.hh"
30 class Grob : public Smob<Grob>
33 int print_smob (SCM, scm_print_state *) const;
34 SCM mark_smob () const;
35 static const char * const type_p_name_;
38 DECLARE_CLASSNAME (Grob);
44 Dimension_cache dim_cache_[NO_AXES];
49 SCM immutable_property_alist_;
50 SCM mutable_property_alist_;
54 If this is a property, it accounts for 25% of the property
59 void substitute_object_links (SCM, SCM);
60 Real get_offset (Axis a) const;
61 SCM try_callback (SCM, SCM);
62 SCM try_callback_on_alist (SCM *, SCM, SCM);
63 void internal_set_value_on_alist (SCM *alist, SCM sym, SCM val);
70 friend SCM ly_grob_properties (SCM);
71 friend SCM ly_grob_basic_properties (SCM);
73 /* standard callbacks */
74 DECLARE_SCHEME_CALLBACK (x_parent_positioning, (SCM));
75 DECLARE_SCHEME_CALLBACK (y_parent_positioning, (SCM));
76 DECLARE_SCHEME_CALLBACK (pure_stencil_height, (SCM smob, SCM, SCM));
77 DECLARE_SCHEME_CALLBACK (stencil_height, (SCM smob));
78 DECLARE_SCHEME_CALLBACK (stencil_width, (SCM smob));
79 DECLARE_SCHEME_CALLBACK (pure_simple_vertical_skylines_from_extents, (SCM smob, SCM, SCM));
80 DECLARE_SCHEME_CALLBACK (simple_vertical_skylines_from_extents, (SCM smob));
81 DECLARE_SCHEME_CALLBACK (vertical_skylines_from_stencil, (SCM smob));
82 DECLARE_SCHEME_CALLBACK (pure_vertical_skylines_from_element_stencils, (SCM smob, SCM, SCM));
83 DECLARE_SCHEME_CALLBACK (vertical_skylines_from_element_stencils, (SCM smob));
84 DECLARE_SCHEME_CALLBACK (pure_simple_horizontal_skylines_from_extents, (SCM smob, SCM, SCM));
85 DECLARE_SCHEME_CALLBACK (simple_horizontal_skylines_from_extents, (SCM smob));
86 DECLARE_SCHEME_CALLBACK (horizontal_skylines_from_stencil, (SCM smob));
87 DECLARE_SCHEME_CALLBACK (pure_horizontal_skylines_from_element_stencils, (SCM smob, SCM, SCM));
88 DECLARE_SCHEME_CALLBACK (horizontal_skylines_from_element_stencils, (SCM smob));
91 Output_def *layout () const { return layout_; }
92 Grob *original () const { return original_; }
93 SCM interfaces () const { return interfaces_; }
96 Grob (SCM basic_props);
98 virtual Grob *clone () const;
102 bool is_live () const;
105 string name () const;
108 SCM get_property_alist_chain (SCM) const;
109 SCM internal_get_property (SCM symbol) const;
110 SCM internal_get_property_data (SCM symbol) const;
111 SCM internal_get_pure_property (SCM symbol, int start, int end) const;
112 SCM internal_get_maybe_pure_property (SCM symbol, bool pure, int start, int end) const;
113 SCM internal_get_non_callback_marker_property_data (SCM symbol) const;
114 SCM internal_get_object (SCM symbol) const;
115 void internal_set_object (SCM sym, SCM val);
116 void internal_del_property (SCM symbol);
117 void instrumented_set_property (SCM, SCM, char const *, int, char const *);
118 void internal_set_property (SCM sym, SCM val);
121 void warning (const string&) const;
122 void programming_error (const string&) const;
124 /* class hierarchy */
125 virtual System *get_system () const;
126 static System *get_system (Grob *);
127 virtual void do_break_processing ();
128 virtual Grob *find_broken_piece (System *) const;
129 virtual void discretionary_processing ();
130 virtual void derived_mark () const;
131 virtual void handle_broken_dependencies ();
132 virtual void handle_prebroken_dependencies ();
135 Stencil *get_stencil () const;
136 Stencil get_print_stencil () const;
139 bool internal_has_interface (SCM intf);
142 void translate_axis (Real, Axis);
143 Real relative_coordinate (Grob const *refp, Axis) const;
144 Real parent_relative (Grob const *refp, Axis) const;
145 Real pure_relative_y_coordinate (Grob const *refp, int start, int end);
146 Real maybe_pure_coordinate (Grob const *refp, Axis a, bool pure, int start, int end);
149 Interval extent (Grob *refpoint, Axis) const;
150 void flush_extent_cache (Axis);
151 virtual Interval pure_y_extent (Grob *refpoint, int start, int end);
152 Interval maybe_pure_extent (Grob *refpoint, Axis, bool pure, int start, int end);
155 Grob *common_refpoint (Grob const *s, Axis a) const;
156 void set_parent (Grob *e, Axis);
157 Grob *get_parent (Axis a) const;
158 void fixup_refpoint ();
160 /* vertical ordering */
161 static bool internal_vertical_less (Grob *g1, Grob *g2, bool pure);
162 static Grob *get_root_vertical_alignment (Grob *g);
163 static Grob *get_vertical_axis_group (Grob *g);
164 static bool vertical_less (Grob *g1, Grob *g2);
165 static bool pure_vertical_less (Grob *g1, Grob *g2);
166 static int get_vertical_axis_group_index (Grob *g);
169 virtual Interval_t<int> spanned_rank_interval () const;
170 virtual bool pure_is_visible (int start, int end) const;
171 bool check_cross_staff (Grob *common);
172 static bool less (Grob *g1, Grob *g2);
173 static SCM maybe_pure_internal_simple_skylines_from_extents (Grob *, Axis, bool, int, int, bool, bool);
174 static SCM internal_skylines_from_element_stencils (Grob *me, Axis a, bool pure, int beg, int end);
175 static SCM internal_skylines_from_element_stencils (SCM, Axis);
179 inline bool has_interface(Grob *g)
181 return g && g->internal_has_interface (Grob_interface<T>::interface_symbol_);
185 void uniquify (vector <Grob *> &);
188 Grob *common_refpoint_of_list (SCM elt_list, Grob *, Axis a);
189 Grob *common_refpoint_of_array (vector<Grob *> const &, Grob *, Axis a);
190 Grob *common_refpoint_of_array (set<Grob *> const &, Grob *, Axis a);
191 System *get_root_system (Grob *me);
194 Interval robust_relative_extent (Grob *, Grob *, Axis);
196 /* offset/extent callbacks. */
197 void add_offset_callback (Grob *g, SCM proc, Axis a);
198 void chain_offset_callback (Grob *g, SCM proc, Axis a);
199 void chain_callback (Grob *g, SCM proc, SCM sym);
200 SCM axis_offset_symbol (Axis a);
201 SCM axis_parent_positioning (Axis a);
203 SCM call_pure_function (SCM unpure, SCM args, int start, int end);
205 void set_nested_property (Grob *, SCM property_path, SCM value);