source file of the GNU LilyPond music typesetter
- (c) 2007--2008 Joe Neeman <joeneeman@gmail.com>
+ (c) 2007--2009 Joe Neeman <joeneeman@gmail.com>
*/
#include "spacing-interface.hh"
}
/*
- Compute the column of the right-items. This is a big function,
- since RIGHT-ITEMS may span more columns (eg. if a clef is inserted,
- this will add a new column to RIGHT-ITEMS. Here we look at the
- columns, and return the left-most. If there are multiple columns, we
- prune RIGHT-ITEMS.
-
- If we end up pruning, we add a left-neighbor to every column that
- gets pruned. This ensures that loose columns in cross-staff music
- do indeed get marked as loose. The problem situation is when a voice
- passes from staff 1 to staff 2 and a clef appears later on in staff 1.
- Then the NoteSpacing attached to the last note in staff 1 has two
- right-items: one pointing to the next note in staff 2 and one pointing
- to the clef. We will prune the clef right-item here and, unless we add
- a left-neighbor to the clef, it won't get marked as loose.
+ Compute the left-most column of the right-items.
*/
Item *
Spacing_interface::right_column (Grob *me)
Grob_array *a = unsmob_grob_array (me->get_object ("right-items"));
Item *mincol = 0;
int min_rank = INT_MAX;
- bool prune = false;
for (vsize i = 0; a && i < a->size (); i++)
{
Item *ri = a->item (i);
if (rank < min_rank)
{
min_rank = rank;
- if (mincol)
- prune = true;
-
mincol = col;
}
- else if (rank > min_rank)
- prune = true;
- }
-
- if (prune && a)
- {
- vector<Grob*> &right = a->array_reference ();
- for (vsize i = right.size (); i--;)
- {
- if (dynamic_cast<Item *> (right[i])->get_column () != mincol)
- {
- extract_grob_set (right[i], "left-neighbors", lns);
- if (lns.empty ())
- Pointer_group_interface::add_grob (right[i],
- ly_symbol2scm ("left-neighbors"),
- dynamic_cast<Item*> (me)->get_column ());
-
- right.erase (right.begin () + i);
- }
- }
}
return mincol;