source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "p-score.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"
+#include "line-of-score.hh"
-Item::Item()
+Item::Item (SCM s)
+ : Grob (s)
{
- breakable_b_ = false;
- break_status_i_ = 0;
broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
}
-IMPLEMENT_IS_TYPE_B1(Item, Score_elem);
-
-void
-Item::do_print() const
+/**
+ Item copy ctor. Copy nothing: everything should be a elt property
+ or a special purpose pointer (such as broken_to_drul_[]) */
+Item::Item (Item const &s)
+ : Grob (s)
{
-#ifndef NPRINT
- DOUT << "breakable_b_: " << breakable_b_ <<
- " break_status_i_: " <<break_status_i_;
-#endif
+ broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0;
}
-Real
-Item::hpos_f() const
+bool
+Item::breakable_b (Grob*me)
{
- return absolute_coordinate (X_AXIS);
+ if (me->original_l_)
+ return false;
+
+ if (!dynamic_cast<Item*> (me))
+ programming_error ("only items can be breakable.");
+
+ Item * i =dynamic_cast<Item*> (me->get_parent (X_AXIS));
+ return (i) ? Item::breakable_b (i) : to_boolean (me->get_grob_property ("breakable"));
}
-Line_of_score *
-Item::line_l() const
+Paper_column *
+Item::column_l () const
{
- return (axis_group_l_a_[X_AXIS])? axis_group_l_a_[X_AXIS]->line_l() : 0;
+ Item *parent = dynamic_cast<Item*> (get_parent (X_AXIS));
+ return parent ? parent->column_l () : 0;
}
-int
-Item::break_status_i() const
+Line_of_score *
+Item::line_l () const
{
- return break_status_i_;
+ Grob *g = get_parent (X_AXIS);
+ return g ? g->line_l () : 0;
}
+
void
-Item::copy_breakable_items()
+Item::copy_breakable_items ()
{
- if (broken_to_drul_[LEFT] || broken_to_drul_[RIGHT])
- return;
Drul_array<Item *> new_copies;
Direction i=LEFT;
do
{
- Item * item_p = clone()->item ();
-
- item_p->break_status_i_ = i;
- pscore_l_->typeset_element (item_p);
- item_p->handle_prebroken_dependencies();
+ Grob * dolly = clone ();
+ Item * item_p = dynamic_cast<Item*> (dolly);
+ pscore_l_->line_l_->typeset_grob (item_p);
new_copies[i] =item_p;
}
- while ((i *= -1) != LEFT);
+ while (flip (&i) != LEFT);
broken_to_drul_= new_copies;
}
-void
-Item::do_breakable_col_processing()
+
+bool
+Item::broken_b () const
{
- if (!breakable_b_)
- return;
+ return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
+}
- copy_breakable_items();
- handle_prebroken_dependencies();
- /*
- Otherwise the broken items won't be pre_process()'ed.
- */
- add_dependency (broken_to_drul_[LEFT]);
- add_dependency (broken_to_drul_[RIGHT]);
+/*
+ Generate items for begin and end-of line.
+ */
+void
+Item::discretionary_processing ()
+{
+ if (broken_b ())
+ return;
+ if (Item::breakable_b (this))
+ copy_breakable_items ();
}
-Item*
-Item::find_prebroken_piece (Line_of_score*l) const
+Grob*
+Item::find_broken_piece (Line_of_score*l) const
{
- if (line_l() == l)
- return (Item*)this;
- else if (broken_to_drul_[LEFT] && broken_to_drul_[LEFT]->line_l() == l)
- return broken_to_drul_[LEFT];
- else if (broken_to_drul_[RIGHT] && broken_to_drul_[RIGHT]->line_l() == l)
- return broken_to_drul_[RIGHT];
+ if (line_l () == l)
+ return (Item*) (this);
+
+ Direction d = LEFT;
+ do {
+ Grob *s = broken_to_drul_[d];
+ if (s && s->line_l () == l)
+ return s;
+ }
+ while (flip (&d) != LEFT);
return 0;
}
+
Item*
-Item::find_prebroken_piece (int breakstatus) const
+Item::find_prebroken_piece (Direction d) const
{
- if (!breakstatus)
- return (Item *) this; // ugh
- else
- return (Item*) broken_to_drul_[(Direction)breakstatus];
+ Item * me = (Item *) (this);
+ if (!d)
+ return me;
+ return dynamic_cast<Item*> (broken_to_drul_[d]);
}
-void
-Item::handle_prebroken_dependencies()
-{
- if (breakable_b_)
- Score_elem::handle_prebroken_dependencies();
-}
-int
-Item::left_right_compare(Item const *l, Item const *r)
+Direction
+Item::break_status_dir () const
{
- while (!l->is_type_b (Paper_column::static_name ()))
- l = l->axis_group_l_a_[X_AXIS]->item();
- while (!r->is_type_b (Paper_column::static_name ()))
- r = r->axis_group_l_a_[X_AXIS]->item();
-
- Paper_column *p1 = (Paper_column*)l;
- Paper_column* p2 = (Paper_column*)r;
- return p1->rank_i () - p2->rank_i ();
-}
-
+ if (original_l_)
+ {
+ Item * i = dynamic_cast<Item*> (original_l_);
-bool
-Item::linked_b() const
-{
- return Score_elem::linked_b() || attached_span_l_arr_.size();
+ return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT;
+ }
+ else
+ return CENTER;
}
void
-Item::do_junk_links()
+Item::handle_prebroken_dependencies ()
{
- attached_span_l_arr_.set_size(0);
+ if (original_l_)
+ {
+ mutable_property_alist_
+ = handle_broken_grobs(original_l_->mutable_property_alist_,
+ gh_int2scm (break_status_dir ()));
+ }
+
+ /*
+ Can't do this earlier, because try_visibility_lambda () might set
+ the elt property transparent, which would then be copied.
+
+ TODO:
+
+ handle visibility-lambda the item itself iso. breakstatusdir, so
+ the function can do more complicated things.
+
+ */
+ SCM vis = get_grob_property ("visibility-lambda");
+ if (gh_procedure_p (vis))
+ {
+ SCM args = scm_list_n (gh_int2scm (break_status_dir ()), SCM_UNDEFINED);
+ SCM result = gh_apply (vis, args);
+ bool trans = gh_scm2bool (ly_car (result));
+ bool empty = gh_scm2bool (ly_cdr (result));
+
+ if (empty && trans)
+ suicide ();
+ else if (empty)
+ {
+ set_extent_callback (SCM_EOL, X_AXIS);
+ set_extent_callback (SCM_EOL, Y_AXIS);
+ }
+ else if (trans)
+ set_grob_property ("molecule-callback", SCM_BOOL_T);
+ }
}
-void
-Item::do_unlink()
+SCM
+Item::do_derived_mark ()
{
- Link_array<Spanner> attached = attached_span_l_arr_;
-
- for (int i=0; i < attached_span_l_arr_.size (); i++) {
- Spanner *&s= attached_span_l_arr_[i];
- if (s->spanned_drul_[LEFT] == this)
- s->set_bounds (LEFT, 0);
- if (s->spanned_drul_[RIGHT] == this)
- s->set_bounds (RIGHT,0);
- s =0;
- }
- attached_span_l_arr_.set_size (0);
+ if (broken_to_drul_[LEFT])
+ scm_gc_mark (broken_to_drul_[LEFT]->self_scm ());
+ if (broken_to_drul_[RIGHT])
+ scm_gc_mark (broken_to_drul_[RIGHT]->self_scm ());
+ return SCM_EOL;
}
projects / lilypond.git / blobdiff