source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "p-score.hh"
+#include "dimension-cache.hh"
+#include "paper-score.hh"
#include "debug.hh"
#include "item.hh"
-#include "p-col.hh"
-#include "elem-group.hh"
+#include "paper-column.hh"
+#include "spanner.hh"
+#include "lily-guile.hh"
-Item::Item()
+Item::Item ()
{
- breakable_b_ = false;
- break_status_i_ = 0;
- pcol_l_ = 0;
- broken_to_a_[0] = broken_to_a_[1]=0;
+ broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
}
-IMPLEMENT_IS_TYPE_B1(Item, Score_elem);
-
-void
-Item::do_print() const
+bool
+Item::breakable_b () const
{
-#ifndef NPRINT
- mtor << "(unknown)";
-#endif
+ if (original_l_ )
+ return false;
+
+ Item * i =dynamic_cast<Item*> (parent_l (X_AXIS));
+ return (i) ? i->breakable_b () : to_boolean (get_elt_property( "breakable"));
}
-
Real
-Item::hpos_f()const
+Item::hpos_f() const
{
- return pcol_l_->hpos_f_ + absolute_coordinate(X_AXIS);
+ return relative_coordinate (0, X_AXIS);
}
Line_of_score *
-Item::line_l()const
+Item::line_l() const
{
- return pcol_l_->line_l_;
+ Score_element *g = parent_l (X_AXIS);
+ if (!g)
+ return 0;
+ return dynamic_cast<Score_element *> (g)-> line_l ();
}
-int
-Item::break_status_i() const
-{
- return break_status_i_;
-}
void
Item::copy_breakable_items()
{
- if ( broken_to_a_[0] || broken_to_a_[1] )
- return;
- Item *new_copies[2];
- for (int i=0; i < 2; i++) {
- Item * item_p = clone()->item();
- item_p->copy_dependencies(*this);
-
- item_p->break_status_i_ = -1+ 2*i;
- pscore_l_->typeset_item(item_p, pcol_l_);
- item_p->handle_prebroken_dependencies();
- new_copies[i] =item_p;
+ Drul_array<Item *> new_copies;
+ Direction i=LEFT;
+ do
+ {
+ Score_element * dolly = clone();
+ Item * item_p = dynamic_cast<Item*>(dolly);
+ pscore_l_->typeset_element (item_p);
+ new_copies[i] =item_p;
+ }
+ while (flip(&i) != LEFT);
+ broken_to_drul_= new_copies;
+
+ do
+ {
+ broken_to_drul_[i]->handle_prebroken_dependencies();
+ broken_to_drul_[i]->try_visibility_lambda();
}
- broken_to_a_= new_copies;
+ while (flip(&i) != LEFT);
}
void
-Item::do_breakable_col_processing()
+Item::try_visibility_lambda ()
{
- if (!breakable_b_ || !pcol_l_->breakable_b())
- return;
-
- copy_breakable_items();
- handle_prebroken_dependencies();
+ SCM vis = remove_elt_property ("visibility-lambda");
+ if (gh_procedure_p (vis))
+ {
+ SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED);
+ SCM result = gh_apply (vis, args);
+ bool trans = gh_scm2bool (gh_car (result));
+ bool empty = gh_scm2bool (gh_cdr (result));
+
+ if (empty)
+ {
+ set_empty (X_AXIS);
+ set_empty ( Y_AXIS);
+ }
+ if (trans)
+ set_elt_property ("transparent", SCM_BOOL_T);
+ }
+}
- /*
- Otherwise the broken items won't be pre_process()'ed.
- */
- add_dependency( broken_to_a_[0] );
- add_dependency( broken_to_a_[1] );
+bool
+Item::broken_b () const
+{
+ return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
+}
+void
+Item::do_break ()
+{
+ if (broken_b ())
+ return;
+
+ if (breakable_b ())
+ {
+ copy_breakable_items();
+ handle_prebroken_dependencies();
+
+ /*
+ Otherwise the broken items won't be pre_process()'ed.
+ */
+
+ if (broken_to_drul_[LEFT])
+ {
+ add_dependency (broken_to_drul_[LEFT]);
+ add_dependency (broken_to_drul_[RIGHT]);
+ }
+ }
+ try_visibility_lambda (); // ugh.
}
-Item*
-Item::find_prebroken_piece(Line_of_score*l) const
+void
+Item::do_breakable_col_processing()
{
- if (line_l() == l)
- return (Item*)this;
- else if (broken_to_a_[0] && broken_to_a_[0]->line_l() == l)
- return broken_to_a_[0];
- else if (broken_to_a_[1] && broken_to_a_[1]->line_l() == l)
- return broken_to_a_[1];
+ do_break ();
+}
- return 0;
+Score_element*
+Item::find_broken_piece (Line_of_score*l) const
+{
+ if (line_l() == l)
+ return (Item*)(this);
+
+ Direction d = LEFT;
+ do {
+ Score_element *s = find_broken_piece (d);
+ if (s && s->line_l () == l)
+ return s;
+ }
+ while (flip (&d) != LEFT);
+
+ return 0;
}
Item*
-Item::find_prebroken_piece(PCol*c)const
+Item::find_broken_piece (Direction d) const
{
- if (c == pcol_l_ )
- return (Item *) this; // ugh
+ Item * me = (Item *) (this);
+ if (!d)
+ return me;
+ else if (breakable_b ())
+ {
+ me->do_break ();
+ return dynamic_cast<Item*> (broken_to_drul_[d]);
+ }
+ else
+ return 0;
+}
- if (c == pcol_l_->prebreak_p_)
- return (Item *) broken_to_a_[0];
- else if (c==pcol_l_->postbreak_p_)
- return (Item *)broken_to_a_[1];
+Paper_column *
+Item::column_l () const
+{
+ return dynamic_cast<Item*> (parent_l (X_AXIS))->column_l ();
+}
- assert(false);
+Item::Item (Item const &s)
+ : Score_element (s)
+{
+ broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0;
}
-void
-Item::handle_prebroken_dependencies()
+Direction
+Item::break_status_dir () const
{
- if ( breakable_b_ )
- Score_elem::handle_prebroken_dependencies();
+ if (original_l_)
+ {
+ Item * i = dynamic_cast<Item*> (original_l_);
+
+ return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT;
+ }
+ else
+ return CENTER;
}
+
+