- /*
- If this column doesn't have a proper neighbor, we should really
- make it loose, but spacing it correctly is more than we can
- currently can handle.
-
- (this happens in the following situation:
-
- |
- | clef G
- *
-
- | | ||
- | | ||
- O O ||
-
-
- the column containing the clef is really loose, and should be
- attached right to the first column, but that is a lot of work for
- such a borderline case.)
-
- */
- if (lns.is_empty () || rns.is_empty ())
- return false;
-
- Item *l_neighbor = dynamic_cast<Item *> (lns[0]);
- Item *r_neighbor = dynamic_cast<Item *> (rns[0]);
-
- if (!l_neighbor || !r_neighbor)
- return false;
-
- l_neighbor = l_neighbor->get_column ();
- r_neighbor = dynamic_cast<Item *> (Note_spacing::right_column (r_neighbor));
-
- if (l == l_neighbor && r == r_neighbor)
- return false;
-
- if (!l_neighbor || !r_neighbor)
- return false;
-
- /*
- Only declare loose if the bounds make a little sense. This means
- some cases (two isolated, consecutive clef changes) won't be
- nicely folded, but hey, then don't do that.
- */
- if (! ((Paper_column::is_musical (l_neighbor) || Item::is_breakable (l_neighbor))
- && (Paper_column::is_musical (r_neighbor) || Item::is_breakable (r_neighbor))))
- {
- return false;
- }
-
- /*
- A rather hairy check, but we really only want to move around
- clefs. (anything else?)
-
- in any case, we don't want to move bar lines.
- */
- extract_grob_set (c, "elements", elts);
- for (int i = elts.size (); i--; )
- {
- Grob *g = elts[i];
- if (g && Break_align_interface::has_interface (g))
- {
- extract_grob_set (g, "elements", gelts);
- for (int j = gelts.size (); j--; )
- {
- Grob *h = gelts[j];
-
- /*
- ugh. -- fix staff-bar name?
- */
- if (h && h->get_property ("break-align-symbol") == ly_symbol2scm ("staff-bar"))
- return false;
- }
- }
- }
-
- return true;
-}
-
-/*
- Remove columns that are not tightly fitting from COLS. In the
- removed columns, set 'between-cols to the columns where it is in
- between.
-*/
-void
-Spacing_spanner::prune_loose_columns (Grob *me, Link_array<Grob> *cols, Rational shortest)
-{
- Link_array<Grob> newcols;
- Real increment = robust_scm2double (me->get_property ("spacing-increment"), 1.2);
- for (int i = 0; i < cols->size (); i++)
- {
- if (Item::is_breakable (cols->elem (i)) || Paper_column::is_musical (cols->elem (i)))
- {
- newcols.push (cols->elem (i));
- continue;
- }
-
- Grob *c = cols->elem (i);
- if (loose_column (cols->elem (i - 1), c, cols->elem (i + 1)))
- {
- extract_grob_set (c, "right-neighbors", rns_arr);
- extract_grob_set (c, "left-neighbors", lns_arr);
-
- SCM lns = lns_arr.size () ? lns_arr.top()->self_scm () : SCM_BOOL_F;
- SCM rns = rns_arr.size () ? rns_arr.top()->self_scm () : SCM_BOOL_F;
-
- /*
- Either object can be non existent, if the score ends
- prematurely.
- */
-
- extract_grob_set (unsmob_grob (rns), "right-items", right_items);
- c->set_object ("between-cols", scm_cons (lns,
- right_items[0]->self_scm ()));
-
- /*
- Set distance constraints for loose columns
- */
- Drul_array<Grob *> next_door;
- next_door[LEFT] = cols->elem (i - 1);
- next_door[RIGHT] = cols->elem (i + 1);
- Direction d = LEFT;
- Drul_array<Real> dists (0, 0);
-
- do
- {
- dists[d] = 0.0;
- Item *lc = dynamic_cast<Item *> ((d == LEFT) ? next_door[LEFT] : c);
- Item *rc = dynamic_cast<Item *> (d == LEFT ? c : next_door[RIGHT]);
-
-
- extract_grob_set (lc, "spacing-wishes", wishes);
- for (int k = wishes.size(); k--;)
- {
- Grob *sp = wishes[k];
- if (Note_spacing::left_column (sp) != lc
- || Note_spacing::right_column (sp) != rc)
- continue;
-
- Real space, fixed;
- fixed = 0.0;
- bool dummy;
-
- if (d == LEFT)
- {
- /*
- The note spacing should be taken from the musical
- columns.
-
- */
- Real base = note_spacing (me, lc, rc, shortest, &dummy);
- Note_spacing::get_spacing (sp, rc, base, increment, &space, &fixed);
-
- space -= increment;
-
- dists[d] = max (dists[d], space);
- }
- else
- {
- Real space, fixed_space;
- Staff_spacing::get_spacing_params (sp,
- &space, &fixed_space);
-
- dists[d] = max (dists[d], fixed_space);
- }
- }
- }
- while (flip (&d) != LEFT);
-
- Rod r;
- r.distance_ = dists[LEFT] + dists[RIGHT];
- r.item_drul_[LEFT] = dynamic_cast<Item *> (cols->elem (i - 1));
- r.item_drul_[RIGHT] = dynamic_cast<Item *> (cols->elem (i + 1));
-
- r.add_to_cols ();
- }
- else
- {
- newcols.push (c);
- }
- }
-
- *cols = newcols;
-}
-
-/*
- Set neighboring columns determined by the spacing-wishes grob property.
-*/
-void
-Spacing_spanner::set_explicit_neighbor_columns (Link_array<Grob> const &cols)
-{
- for (int i = 0; i < cols.size (); i++)
- {
- SCM right_neighbors = Grob_array::make_array ();
- Grob_array *rn_arr = unsmob_grob_array (right_neighbors);
- int min_rank = 100000; // inf.
-
- extract_grob_set (cols[i], "spacing-wishes", wishes);
- for (int k = wishes.size(); k--;)
- {
- Item *wish = dynamic_cast<Item *> ( wishes[k]);
-
- Item *lc = wish->get_column ();
- Grob *right = Note_spacing::right_column (wish);
-
- if (!right)
- continue;
-
- Item *rc = dynamic_cast<Item *> (right);
-
- int right_rank = Paper_column::get_rank (rc);
- int left_rank = Paper_column::get_rank (lc);
-
- /*
- update the left column.
- */
- if (right_rank <= min_rank)
- {
- if (right_rank < min_rank)
- rn_arr->clear ();
-
- min_rank = right_rank;
- rn_arr->add (wish);
- }
-
- /*
- update the right column of the wish.
- */
- int maxrank = 0;
-
- extract_grob_set (rc, "left-neighbors", lns_arr);
- if (lns_arr.size ())
- {
- Item *it = dynamic_cast<Item *> (lns_arr.top());
- maxrank = Paper_column::get_rank (it->get_column ());
- }
-
- if (left_rank >= maxrank)
- {
-
- if (left_rank > maxrank)
- {
- Grob_array *ga = unsmob_grob_array (rc->get_object ("left-neighbors"));
- if (ga)
- ga->clear ();
- }
-
- Pointer_group_interface::add_grob (rc, ly_symbol2scm ("left-neighbors"), wish);
- }
- }
-
- if (rn_arr->size ())
- {
- cols[i]->set_object ("right-neighbors", right_neighbors);
- }
- }
-}
-
-/*
- Set neighboring columns that have no left/right-neighbor set
- yet. Only do breakable non-musical columns, and musical columns.
-*/
-void
-Spacing_spanner::set_implicit_neighbor_columns (Link_array<Grob> const &cols)
-{
- for (int i = 0; i < cols.size (); i++)
- {
- Item *it = dynamic_cast<Item *> (cols[i]);
- if (!Item::is_breakable (it) && !Paper_column::is_musical (it))
- continue;
-
- // it->breakable || it->musical
-
- /*
- sloppy with typing left/right-neighbors should take list, but paper-column found instead.
- */
- extract_grob_set (cols[i], "left-neighbors", lns);
- if (lns.is_empty () && i )
- {
- SCM ga_scm = Grob_array::make_array();
- Grob_array *ga = unsmob_grob_array (ga_scm);
- ga->add (cols[i-1]);
- cols[i]->set_object ("left-neighbors", ga_scm);
- }
- extract_grob_set (cols[i], "right-neighbors", rns);
- if (rns.is_empty () && i < cols.size () - 1)
- {
- SCM ga_scm = Grob_array::make_array();
- Grob_array *ga = unsmob_grob_array (ga_scm);
- ga->add (cols[i+1]);
- cols[i]->set_object ("right-neighbors", ga_scm);
- }
- }
projects / lilypond.git / blobdiff