2 System-start-delimiter-engraver.cc -- implement
3 System_start_delimiter_engraver
5 source file of the GNU LilyPond music typesetter
7 (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "engraver.hh"
13 #include "side-position-interface.hh"
14 #include "system-start-delimiter.hh"
15 #include "staff-symbol.hh"
16 #include "pointer-group-interface.hh"
17 #include "paper-column.hh"
18 #include "output-def.hh"
21 struct Bracket_nesting_node
24 virtual ~Bracket_nesting_node(){}
25 virtual bool add_staff (Grob *) { return false; }
26 virtual void add_support (Grob *) { }
27 virtual void set_bound (Direction, Grob *){}
28 virtual void set_nesting_support (Grob*) {}
29 virtual void create_grobs (Engraver*, SCM) {}
32 struct Bracket_nesting_group : public Bracket_nesting_node
35 vector<Bracket_nesting_node*> children_;
38 void from_list (SCM );
39 virtual void add_support (Grob *grob);
40 virtual bool add_staff (Grob *grob);
41 virtual void set_nesting_support (Grob*);
42 virtual void set_bound (Direction, Grob *grob);
43 virtual void create_grobs (Engraver*, SCM);
44 ~Bracket_nesting_group ();
45 Bracket_nesting_group ();
49 struct Bracket_nesting_staff : public Bracket_nesting_node
53 Bracket_nesting_staff (Grob *s) { staff_ = s; }
54 virtual bool add_staff (Grob *);
58 Bracket_nesting_group::Bracket_nesting_group ()
65 Bracket_nesting_staff::add_staff (Grob *g)
76 Bracket_nesting_group::create_grobs (Engraver *engraver, SCM default_type)
78 SCM type = scm_is_symbol (symbol_) ? symbol_ : default_type;
79 delimiter_ = engraver->make_spanner (ly_symbol2string (type).c_str (), SCM_EOL);
81 for (vsize i = 0 ; i < children_.size (); i++)
83 children_[i]->create_grobs (engraver, default_type);
88 Bracket_nesting_group::add_support (Grob *g)
90 Side_position_interface::add_support (g, delimiter_);
91 for (vsize i = 0 ; i < children_.size (); i++)
93 children_[i]->add_support (g);
97 Bracket_nesting_group::~Bracket_nesting_group ()
99 for (vsize i = 0 ; i < children_.size (); i++)
104 Bracket_nesting_group::set_bound (Direction d, Grob *g)
106 delimiter_->set_bound (d, g);
107 for (vsize i = 0 ; i < children_.size (); i++)
109 children_[i]->set_bound (d, g);
114 Bracket_nesting_group::set_nesting_support (Grob *parent)
117 Side_position_interface::add_support (delimiter_, parent);
119 for (vsize i = 0 ; i < children_.size (); i++)
121 children_[i]->set_nesting_support (delimiter_);
127 Bracket_nesting_group::from_list (SCM x)
129 for (SCM s = x; scm_is_pair (s); s = scm_cdr (s))
131 SCM entry = scm_car (s);
132 if (scm_is_pair (entry))
134 Bracket_nesting_group *node = new Bracket_nesting_group;
135 node->from_list (entry);
136 children_.push_back (node);
138 else if (entry == ly_symbol2scm ("SystemStartBrace")
139 || entry == ly_symbol2scm ("SystemStartBracket")
140 || entry == ly_symbol2scm ("SystemStartBar")
141 || entry == ly_symbol2scm ("SystemStartSquare")
146 children_.push_back (new Bracket_nesting_staff (0));
152 Bracket_nesting_group::add_staff (Grob *grob)
154 for (vsize i = 0; i < children_.size (); i++)
156 if (children_[i]->add_staff (grob))
158 Pointer_group_interface::add_grob (delimiter_, ly_symbol2scm ("elements"), grob);
171 class System_start_delimiter_engraver : public Engraver
174 TRANSLATOR_DECLARATIONS (System_start_delimiter_engraver);
177 Bracket_nesting_group *nesting_;
179 DECLARE_ACKNOWLEDGER (system_start_delimiter);
180 DECLARE_ACKNOWLEDGER (system_start_text);
181 DECLARE_ACKNOWLEDGER (staff_symbol);
183 void process_music ();
184 virtual void finalize ();
187 System_start_delimiter_engraver::System_start_delimiter_engraver ()
193 System_start_delimiter_engraver::process_music ()
197 nesting_ = new Bracket_nesting_group ();
198 SCM hierarchy = get_property ("systemStartDelimiterHierarchy");
199 SCM delimiter_name = get_property ("systemStartDelimiter");
201 nesting_->from_list (hierarchy);
202 nesting_->create_grobs (this, delimiter_name);
203 nesting_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
208 System_start_delimiter_engraver::finalize ()
212 nesting_->set_bound (RIGHT,
213 unsmob_grob (get_property ("currentCommandColumn")));
214 nesting_->set_nesting_support (0);
219 System_start_delimiter_engraver::acknowledge_staff_symbol (Grob_info inf)
221 Grob *staff = inf.grob();
222 bool succ = nesting_->add_staff (staff);
226 nesting_->children_.push_back (new Bracket_nesting_staff (0));
227 nesting_->add_staff (staff);
234 System_start_delimiter_engraver::acknowledge_system_start_text (Grob_info inf)
236 nesting_->add_support (inf.grob ());
240 System_start_delimiter_engraver::acknowledge_system_start_delimiter (Grob_info inf)
242 nesting_->add_support (inf.grob ());
245 #include "translator.icc"
247 ADD_ACKNOWLEDGER (System_start_delimiter_engraver, staff_symbol);
248 ADD_ACKNOWLEDGER (System_start_delimiter_engraver, system_start_delimiter);
249 ADD_ACKNOWLEDGER (System_start_delimiter_engraver, system_start_text);
251 ADD_TRANSLATOR (System_start_delimiter_engraver,
252 /* doc */ "Creates a system start delimiter (ie. SystemStart@{Bar, Brace, Bracket@} spanner",
253 /* create */ "SystemStartSquare "
255 "SystemStartBracket "
258 "systemStartDelimiter "
259 "systemStartDelimiterHierarchy "
260 "currentCommandColumn",