2 item.cc -- implement Item
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "dimension-cache.hh"
10 #include "paper-score.hh"
13 #include "paper-column.hh"
15 #include "lily-guile.hh"
19 broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
23 Item::breakable_b () const
28 Item * i =dynamic_cast<Item*> (parent_l (X_AXIS));
29 return (i) ? i->breakable_b () : get_elt_property( breakable_scm_sym) != SCM_BOOL_F;
33 Item::do_print() const
41 return relative_coordinate (0, X_AXIS);
47 Graphical_element *g = parent_l (X_AXIS);
50 return dynamic_cast<Score_element *> (g)-> line_l ();
55 Item::copy_breakable_items()
57 if (broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]
61 Drul_array<Item *> new_copies;
65 Score_element * dolly = clone();
66 Item * item_p = dynamic_cast<Item*>(dolly);
67 pscore_l_->typeset_element (item_p);
68 new_copies[i] =item_p;
70 while (flip(&i) != LEFT);
71 broken_to_drul_= new_copies;
75 broken_to_drul_[i]->handle_prebroken_dependencies();
76 broken_to_drul_[i]->try_visibility_lambda();
78 while (flip(&i) != LEFT);
79 try_visibility_lambda ();
83 Item::try_visibility_lambda ()
85 SCM vis = remove_elt_property (visibility_lambda_scm_sym);
86 if (vis != SCM_BOOL_F)
88 SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED);
89 SCM result = gh_apply ( SCM_CDR(vis), args);
90 int trans = gh_scm2bool (gh_car (result));
91 int empty = gh_scm2bool (gh_cdr (result));
94 set_empty (true, X_AXIS, Y_AXIS);
96 set_elt_property (transparent_scm_sym, SCM_BOOL_T);
103 copy_breakable_items();
104 handle_prebroken_dependencies();
107 Otherwise the broken items won't be pre_process()'ed.
109 add_dependency (broken_to_drul_[LEFT]);
110 add_dependency (broken_to_drul_[RIGHT]);
114 Item::do_breakable_col_processing()
119 try_visibility_lambda ();
122 Item::find_prebroken_piece (Line_of_score*l) const
125 return (Item*)(this);
126 else if (broken_to_drul_[LEFT] && broken_to_drul_[LEFT]->line_l() == l)
127 return broken_to_drul_[LEFT];
128 else if (broken_to_drul_[RIGHT] && broken_to_drul_[RIGHT]->line_l() == l)
129 return broken_to_drul_[RIGHT];
135 Item::find_prebroken_piece (Direction d) const
138 return (Item *) (this); // ugh
140 return dynamic_cast<Item*> (broken_to_drul_[d]);
144 Item::handle_prebroken_dependencies()
147 Score_element::handle_prebroken_dependencies();
151 Item::broken_original_b () const
153 return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
157 Item::left_right_compare(Item const *l, Item const *r)
159 Paper_column *p1 = l->column_l ();
160 Paper_column* p2 = r->column_l ();
161 return p1->rank_i () - p2->rank_i ();
165 Item::column_l () const
167 return dynamic_cast<Item*> (parent_l (X_AXIS))->column_l ();
170 Item::Item (Item const &s)
173 broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0;
178 Item::handle_prebroken_dependents ()
180 Item * parent = dynamic_cast<Item*> (parent_l (X_AXIS));
181 if (breakable_b () && parent)
183 if(!(broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]))
189 Item * broken_self = find_prebroken_piece (d);
190 Item * broken_parent = parent->find_prebroken_piece (d);
192 broken_self->set_parent (broken_parent, X_AXIS);
195 ugh. Should do this is after breaking?
197 if (!broken_self->parent_l (Y_AXIS))
199 Score_element * yparent =dynamic_cast<Score_element*>(parent_l (Y_AXIS));
200 Item *yparenti = dynamic_cast<Item*> (yparent);
201 Item *broken_yparent = yparenti ?
202 yparenti->find_prebroken_piece (d) : 0;
205 programming_error ("Vertical refpoint lost!");
208 broken_self->set_parent (broken_yparent, Y_AXIS);
212 while ((flip (&d))!=LEFT);
217 Item::break_status_dir () const
221 Item * i = dynamic_cast<Item*> (original_l_);
223 return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT;