source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 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 "paper-column.hh"
+#include "spanner.hh"
+#include "lily-guile.hh"
-Item::Item()
+Item::Item ()
{
- pcol_l_ = 0;
+ broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
+}
- broken_to_a_[0]
- = broken_to_a_[1]=0;
+bool
+Item::breakable_b () const
+{
+ if (original_l_ )
+ return false;
+
+ Item * i =dynamic_cast<Item*> (parent_l (X_AXIS));
+ return (i) ? i->breakable_b () : get_elt_property( "breakable") != SCM_UNDEFINED;
}
-IMPLEMENT_STATIC_NAME(Item);
-IMPLEMENT_IS_TYPE_B1(Item, Score_elem);
+Real
+Item::hpos_f() const
+{
+ return relative_coordinate (0, X_AXIS);
+}
-void
-Item::do_print() const
+Line_of_score *
+Item::line_l() const
{
-#ifndef NPRINT
- mtor << "(unknown)";
-#endif
+ Score_element *g = parent_l (X_AXIS);
+ if (!g)
+ return 0;
+ return dynamic_cast<Score_element *> (g)-> line_l ();
}
-Real
-Item::hpos_f()const
+void
+Item::copy_breakable_items()
{
- return pcol_l_->hpos + offset().x;
-}
+ 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();
+ }
+ while (flip(&i) != LEFT);
+}
+void
+Item::try_visibility_lambda ()
+{
+ SCM vis = remove_elt_property ("visibility-lambda");
+ if (vis != SCM_UNDEFINED)
+ {
+ SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED);
+ SCM result = gh_apply (vis, args);
+ int trans = gh_scm2bool (gh_car (result));
+ int 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);
+ }
+}
-Line_of_score *
-Item::line_l()const
+bool
+Item::broken_b () const
{
- return pcol_l_->line_l_;
+ return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
}
-int
-Item::break_status_i() const
+void
+Item::do_break ()
{
- PCol * c = pcol_l_;
- if (c->breakable_b())
- return 0;
- else if (!c->daddy_l_)
- return 0;
- else if (c == c->daddy_l_->prebreak_p_)
- return -1;
- else
- return 1;
+ 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.
}
void
Item::do_breakable_col_processing()
{
- PCol * c = pcol_l_;
- if (!c->breakable_b())
- return;
-
- for (int i=0; i < 2; i++) {
- broken_to_a_[i] = clone()->item();
- pscore_l_->typeset_item(broken_to_a_[i], c, -1+ 2*i);
- broken_to_a_[i]->handle_prebroken_dependencies();
- }
+ do_break ();
+}
- handle_prebroken_dependencies();
+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(Line_of_score*l) const
+Item::find_broken_piece (Direction d) const
{
- if (line_l() == l)
- return 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];
+ Item * me = (Item *) (this);
+ if (!d)
+ return me;
+ else
+ {
+ me->do_break ();
+ return dynamic_cast<Item*> (broken_to_drul_[d]);
+ }
+}
- return 0;
+void
+Item::handle_prebroken_dependencies()
+{
+ if (original_l_)
+ Score_element::handle_prebroken_dependencies();
}
-Item*
-Item::find_prebroken_piece(PCol*c)const
+bool
+Item::broken_original_b () const
+{
+ return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
+}
+
+int
+Item::left_right_compare(Item const *l, Item const *r)
{
- if (c == pcol_l_ )
- return (Item *) this; // ugh
+ Paper_column *p1 = l->column_l ();
+ Paper_column* p2 = r->column_l ();
+ return p1->rank_i () - p2->rank_i ();
+}
- 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;
}
+#if 0
void
-Item::handle_prebroken_dependencies()
+Item::handle_prebroken_dependents ()
{
- if ( pcol_l_->breakable_b() || pcol_l_->daddy_l_ )
- Score_elem::handle_prebroken_dependencies();
+ Item * parent = dynamic_cast<Item*> (parent_l (X_AXIS));
+ if (breakable_b () && parent)
+ {
+ if(!(broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]))
+ do_break ();
+
+ Direction d = LEFT;
+ do
+ {
+ Item * broken_self = find_broken_piece (d);
+ Item * broken_parent = parent->find_broken_piece (d);
+
+ broken_self->set_parent (broken_parent, X_AXIS);
+
+ /*
+ ugh. Should do this is after breaking?
+ */
+ if (!broken_self->parent_l (Y_AXIS))
+ {
+ Score_element * yparent =dynamic_cast<Score_element*>(parent_l (Y_AXIS));
+ Item *yparenti = dynamic_cast<Item*> (yparent);
+ Item *broken_yparent = yparenti ?
+ yparenti->find_broken_piece (d) : 0;
+
+ if (!yparent)
+ programming_error ("Vertical refpoint lost!");
+ else if (yparenti)
+ {
+ broken_self->set_parent (broken_yparent, Y_AXIS);
+ }
+ }
+ }
+ while ((flip (&d))!=LEFT);
+ }
}
+#endif
+
+Direction
+Item::break_status_dir () const
+{
+ if (original_l_)
+ {
+ Item * i = dynamic_cast<Item*> (original_l_);
+
+ return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT;
+ }
+ else
+ return CENTER;
+}
+
+
projects / lilypond.git / blobdiff