/*
- note-spacing.cc -- implement Note_spacing
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2001--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2001--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ 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 "note-spacing.hh"
+#include "bar-line.hh"
#include "directional-element-interface.hh"
#include "grob-array.hh"
#include "paper-column.hh"
#include "output-def.hh"
#include "pointer-group-interface.hh"
+static bool
+non_empty_barline (Grob *me)
+{
+ return Bar_line::has_interface (me) && !me->extent (me, X_AXIS).is_empty ();
+}
+
/*
TODO: detect hshifts due to collisions, and account for them in
spacing?
adjust things so there are no collisions.
*/
Drul_array<Skyline> skys = Spacing_interface::skylines (me, right_col);
- Real min_dist = max (0.0, skys[LEFT].distance (skys[RIGHT]));
- Real min_desired_space = left_head_end + (min_dist - left_head_end) / 2;
-
- /* if the right object sticks out a lot, include a bit of extra space.
- But only for non-musical-columns; this shouldn't apply to accidentals */
- if (!Paper_column::is_musical (right_col))
- min_desired_space = max (min_desired_space,
- left_head_end + LEFT * skys[RIGHT].max_height ());
+ Real distance = skys[LEFT].distance (skys[RIGHT]);
+ Real min_dist = max (0.0, distance);
+ Real min_desired_space = left_head_end + (min_dist - left_head_end + base_space - increment) / 2;
+ Real ideal = base_space - increment + left_head_end;
+
+ /* If we have a NonMusical column on the right, we measure the ideal distance
+ to the bar-line (if present), not the start of the column. */
+ if (!Paper_column::is_musical (right_col)
+ && !skys[RIGHT].is_empty ()
+ && to_boolean (me->get_property ("space-to-barline")))
+ {
+ Grob *bar = Pointer_group_interface::find_grob (right_col,
+ ly_symbol2scm ("elements"),
+ non_empty_barline);
- Real ideal = base_space - increment + min_desired_space;
+ if (bar)
+ {
+ Real shift = bar->extent (right_col, X_AXIS)[LEFT];
+ ideal -= shift;
+ min_desired_space -= max (shift, 0.0);
+ }
+ else
+ ideal -= right_col->extent (right_col, X_AXIS)[RIGHT];
+ }
+ ideal = max (ideal, min_desired_space);
stem_dir_correction (me, right_col, increment, &ideal, &min_desired_space);
- Spring ret (ideal, min_dist);
- ret.set_inverse_compress_strength (max (0.0, ideal - max (min_dist, min_desired_space)));
+ /* TODO: grace notes look bad when things are stretched. Should we increase
+ their stretch strength? */
+ Spring ret (max (0.0, ideal), min_dist);
+ ret.set_inverse_compress_strength (max (0.0, ideal - min_desired_space));
ret.set_inverse_stretch_strength (max (0.1, base_space - increment));
return ret;
}
}
-/**
+/*
Correct for optical illusions. See [Wanske] p. 138. The combination
up-stem + down-stem should get extra space, the combination
down-stem + up-stem less.
Direction d = LEFT;
+ bool acc_right = false;
+
Grob *bar = Spacing_interface::extremal_break_aligned_grob (me, RIGHT,
rcolumn->break_status_dir (),
&bar_xextent);
- if (bar)
+ if (bar && dynamic_cast<Item*> (bar)->get_column () == rcolumn)
bar_yextent = Staff_spacing::bar_y_positions (bar);
do
for (vsize i = 0; i < items.size (); i++)
{
Item *it = dynamic_cast<Item *> (items[i]);
+ if (!Note_column::has_interface (it))
+ continue;
+ if (d == RIGHT && it->get_column () != rcolumn)
+ continue;
/*
- don't correct if accidentals are sticking out of the right side.
+ Find accidentals which are sticking out of the right side.
*/
- if (d == RIGHT && Note_column::accidentals (it))
- return;
+ if (d == RIGHT)
+ acc_right = acc_right || Note_column::accidentals (it);
Grob *stem = Note_column::get_stem (it);
correction *= 0.5;
}
}
- else if (stem_dirs[LEFT] * stem_dirs[RIGHT] == 1)
+ /*
+ Only apply same direction correction if there are no
+ accidentals sticking out of the right hand side.
+ */
+ else if (stem_dirs[LEFT] * stem_dirs[RIGHT] == 1
+ && !acc_right)
correction = same_direction_correction (me, head_posns);
*space += correction;
ADD_INTERFACE (Note_spacing,
"This object calculates spacing wishes for individual voices.",
-
+ /* properties */
"knee-spacing-correction "
"left-items "
"right-items "
"same-direction-correction "
"stem-spacing-correction "
-
+ "space-to-barline "
);
projects / lilypond.git / blobdiff