/*
- spacing-interface.cc -- functionality that is shared between Note_spacing
- and Staff_spacing
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2007--2011 Joe Neeman <joeneeman@gmail.com>
- (c) 2007 Joe Neeman <joeneeman@gmail.com>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "spacing-interface.hh"
#include "paper-column.hh"
#include "separation-item.hh"
#include "skyline.hh"
+#include "skyline-pair.hh"
+#include "system.hh"
/* return the right-pointing skyline of the left-items and the left-pointing
skyline of the right-items (with the skyline of the left-items in
Drul_array<vector<Grob*> > items (ly_scm2link_array (orig->get_object ("left-items")),
ly_scm2link_array (orig->get_object ("right-items")));
+ Grob *system = me->get_system ();
+ Grob *left_col = dynamic_cast<Item*> (me)->get_column ();
+
+ Drul_array<Grob*> columns (left_col, right_col);
+
Direction d = LEFT;
do
{
- skylines[d].set_minimum_height (0.0);
-
for (vsize i = 0; i < items[d].size (); i++)
{
- Grob *g = items[d][i];
- if (Item *it = dynamic_cast<Item*> (g))
- if (Grob *piece = it->find_prebroken_piece (break_dirs[d]))
+ Item *g = dynamic_cast<Item*> (items[d][i]);
+ if (g)
+ if (Item *piece = g->find_prebroken_piece (break_dirs[d]))
g = piece;
- if (Separation_item::has_interface (g))
+ if (g && Separation_item::has_interface (g) && g->get_column () == columns[d])
{
SCM sky_scm = g->get_property ("horizontal-skylines");
Skyline_pair *sky = Skyline_pair::unsmob (sky_scm);
+
+ extract_grob_set (g, "elements", elts);
+ Grob *ycommon = common_refpoint_of_array (elts, g, Y_AXIS);
+ Real shift = ycommon->pure_relative_y_coordinate (system, 0, INT_MAX);
+
+ skylines[d].shift (-shift);
+
if (sky)
skylines[d].merge ((*sky)[-d]);
else
programming_error ("separation item has no skyline");
-
+
if (d == RIGHT && items[LEFT].size ())
skylines[d].merge (Separation_item::conditional_skyline (items[d][i], items[LEFT][0]));
+
+ skylines[d].shift (shift);
}
}
}
}
/*
- 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.
+ 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;
}
}
- if (prune && a)
- {
- vector<Grob*> &right = a->array_reference ();
- for (vsize i = right.size (); i--;)
- {
- if (dynamic_cast<Item *> (right[i])->get_column () != mincol)
- right.erase (right.begin () + i);
- }
- }
-
return mincol;
}
return get_note_columns (elts);
}
+/*
+ Try to find the break-aligned symbol that belongs on the D-side
+ of ME, sticking out in direction -D. The x size is put in LAST_EXT
+*/
+Grob *
+Spacing_interface::extremal_break_aligned_grob (Grob *me,
+ Direction d,
+ Direction break_dir,
+ Interval *last_ext)
+{
+ Grob *col = 0;
+ last_ext->set_empty ();
+ Grob *last_grob = 0;
+
+ extract_grob_set (me, d == LEFT ? "left-break-aligned" : "right-break-aligned", elts);
+
+ for (vsize i = elts.size (); i--;)
+ {
+ Item *break_item = dynamic_cast<Item*> (elts[i]);
+
+ if (break_item->break_status_dir () != break_dir)
+ break_item = break_item->find_prebroken_piece (break_dir);
+
+ if (!break_item || !scm_is_pair (break_item->get_property ("space-alist")))
+ continue;
+
+ if (!col)
+ col = dynamic_cast<Item*> (elts[0])->get_column ()->find_prebroken_piece (break_dir);
+
+ Interval ext = break_item->extent (col, X_AXIS);
+
+ if (ext.is_empty ())
+ continue;
+
+ if (!last_grob
+ || (last_grob && d * (ext[-d]- (*last_ext)[-d]) < 0))
+ {
+ *last_ext = ext;
+ last_grob = break_item;
+ }
+ }
+
+ return last_grob;
+}
+
+
ADD_INTERFACE (Spacing_interface,
- "This object calculates the desired and minimum distances between two columns.",
+ "This object calculates the desired and minimum distances"
+ " between two columns.",
+ /* properties */
"left-items "
"right-items "
);
projects / lilypond.git / blobdiff