source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "dimension-cache.hh"
+
#include "paper-score.hh"
#include "debug.hh"
#include "item.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)
{
broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0;
}
/**
Item copy ctor. Copy nothing: everything should be a elt property
- or a special purpose poitner (such as broken_to_drul_[]) */
+ or a special purpose pointer (such as broken_to_drul_[]) */
Item::Item (Item const &s)
- : Score_element (s)
+ : Grob (s)
{
broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0;
}
-
bool
-Item::breakable_b () const
+Item::breakable_b (Grob*me)
{
- if (original_l_ )
+ if (me->original_l_)
return false;
+
+ if (!dynamic_cast<Item*> (me))
+ programming_error ("only items can be breakable.");
- Item * i =dynamic_cast<Item*> (parent_l (X_AXIS));
- return (i) ? i->breakable_b () : to_boolean (get_elt_property( "breakable"));
+ Item * i =dynamic_cast<Item*> (me->get_parent (X_AXIS));
+ return (i) ? Item::breakable_b (i) : to_boolean (me->get_grob_property ("breakable"));
+}
+
+Paper_column *
+Item::column_l () const
+{
+ Item *parent = dynamic_cast<Item*> (get_parent (X_AXIS));
+ return parent ? parent->column_l () : 0;
}
Line_of_score *
-Item::line_l() const
+Item::line_l () const
{
- Score_element *g = parent_l (X_AXIS);
+ Grob *g = get_parent (X_AXIS);
return g ? g->line_l () : 0;
}
void
-Item::copy_breakable_items()
+Item::copy_breakable_items ()
{
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);
+ Grob * dolly = clone ();
+ Item * item_p = dynamic_cast<Item*> (dolly);
+ pscore_l_->line_l_->typeset_grob (item_p);
new_copies[i] =item_p;
}
- while (flip(&i) != LEFT);
+ 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 (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);
- }
-}
bool
Item::broken_b () const
return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT];
}
+
+/*
+ Generate items for begin and end-of line.
+ */
void
-Item::do_break ()
+Item::discretionary_processing ()
{
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.
+ if (Item::breakable_b (this))
+ copy_breakable_items ();
}
-void
-Item::do_breakable_col_processing()
-{
- do_break ();
-}
-
-Score_element*
+Grob*
Item::find_broken_piece (Line_of_score*l) const
{
- if (line_l() == l)
- return (Item*)(this);
+ if (line_l () == l)
+ return (Item*) (this);
Direction d = LEFT;
do {
- Score_element *s = find_broken_piece (d);
+ Grob *s = broken_to_drul_[d];
if (s && s->line_l () == l)
return s;
}
return 0;
}
+
Item*
-Item::find_broken_piece (Direction d) const
+Item::find_prebroken_piece (Direction d) const
{
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;
+ return dynamic_cast<Item*> (broken_to_drul_[d]);
}
-Paper_column *
-Item::column_l () const
-{
- return dynamic_cast<Item*> (parent_l (X_AXIS))->column_l ();
-}
Direction
Item::break_status_dir () const
return CENTER;
}
+void
+Item::handle_prebroken_dependencies ()
+{
+ 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);
+ }
+}
+
+SCM
+Item::do_derived_mark ()
+{
+ 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