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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1997--2009 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 "dot-column.hh"
#include <cstdio>
#include <cmath>
#include <map>
#include <set>
using namespace std;
#include "axis-group-interface.hh"
#include "directional-element-interface.hh"
#include "dot-column.hh"
#include "dot-configuration.hh"
#include "dot-formatting-problem.hh"
#include "dots.hh"
#include "grob.hh"
#include "note-head.hh"
#include "pointer-group-interface.hh"
#include "rest.hh"
#include "rhythmic-head.hh"
#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
#include "stem.hh"
MAKE_SCHEME_CALLBACK (Dot_column, calc_positioning_done, 1);
SCM
Dot_column::calc_positioning_done (SCM smob)
{
Grob *me = unsmob_grob (smob);
/*
Trigger note collision resolution first, since that may kill off
dots when merging.
*/
if (Grob *collision = unsmob_grob (me->get_object ("note-collision")))
(void) collision->get_property ("positioning-done");
me->set_property ("positioning-done", SCM_BOOL_T);
vector<Grob*> dots
= extract_grob_array (me, "dots");
vector<Grob*> main_heads;
Real ss = 0;
Grob *commonx = me;
for (vsize i = 0; i < dots.size (); i++)
{
Grob *n = dots[i]->get_parent (Y_AXIS);
commonx = n->common_refpoint (commonx, X_AXIS);
if (Grob *stem = unsmob_grob (n->get_object("stem")))
{
commonx = stem->common_refpoint (commonx, X_AXIS);
if (Stem::first_head (stem) == n)
main_heads.push_back (n);
}
}
vector<Box> boxes;
set<Grob*> stems;
extract_grob_set(me, "side-support-elements", support);
Interval base_x;
for (vsize i = 0; i < main_heads.size (); i++)
base_x.unite (main_heads[i]->extent (commonx, X_AXIS));
for (vsize i = 0; i < support.size (); i++)
{
Grob *s = support[i];
if (!ss)
ss = Staff_symbol_referencer::staff_space (s);
/* can't inspect Y extent of rest.
Rest collisions should wait after line breaking.
*/
Interval y;
if (Rest::has_interface (s))
{
base_x.unite (s->extent (commonx, X_AXIS));
continue;
}
else if (Stem::has_interface (s))
{
Real y1 = Stem::head_positions (s)[-get_grob_direction (s)];
Real y2 = y1 + get_grob_direction (s) * 7;
y.add_point (y1);
y.add_point (y2);
}
else
y = s->extent (s, Y_AXIS);
y *= 2 / ss;
y += Staff_symbol_referencer::get_position (s);
Box b (s->extent (commonx, X_AXIS), y);
boxes.push_back (b);
if (Grob *stem = unsmob_grob (s->get_object ("stem")))
stems.insert (stem);
}
for (set<Grob*>::const_iterator i(stems.begin());
i != stems.end (); i++)
{
Grob *stem = (*i);
Stencil flag = Stem::flag (stem);
if (!flag.is_empty ())
{
Interval y = flag.extent (Y_AXIS)
* (2 / ss)
+ Stem::stem_end_position (stem);
Interval x = stem->relative_coordinate (commonx, X_AXIS)
+ flag.extent (X_AXIS);
boxes.push_back (Box (x,y));
}
}
vector_sort (dots, position_less);
for (vsize i = dots.size (); i--;)
if (!dots[i]->is_live ())
dots.erase (dots.begin () + i);
Dot_formatting_problem problem (boxes, base_x);
Dot_configuration cfg (problem);
for (vsize i = 0; i < dots.size (); i++)
{
Dot_position dp;
dp.dot_ = dots[i];
Grob *note = dots[i]->get_parent (Y_AXIS);
if (note)
{
Grob *stem = unsmob_grob (note->get_object ("stem"));
if (stem)
dp.extremal_head_ = Stem::first_head (stem) == note;
dp.x_extent_ = note->extent (commonx, X_AXIS);
}
int p = Staff_symbol_referencer::get_rounded_position (dp.dot_);
/* icky, since this should go via a Staff_symbol_referencer
offset callback but adding a dot overwrites Y-offset. */
p += (int) robust_scm2double (dp.dot_->get_property ("staff-position"), 0.0);
dp.pos_ = p;
if (dp.extremal_head_)
dp.dir_ = to_dir (dp.dot_->get_property ("direction"));
cfg.remove_collision (p);
cfg[p] = dp;
if (Staff_symbol_referencer::on_line (dp.dot_, p))
cfg.remove_collision (p);
}
problem.register_configuration (cfg);
for (Dot_configuration::const_iterator i (cfg.begin ());
i != cfg.end (); i++)
{
/*
Junkme?
*/
Staff_symbol_referencer::set_position (i->second.dot_, i->first);
}
me->translate_axis (cfg.x_offset () - me->relative_coordinate (commonx, X_AXIS),
X_AXIS);
return SCM_BOOL_T;
}
void
Dot_column::add_head (Grob *me, Grob *head)
{
Grob *d = unsmob_grob (head->get_object ("dot"));
if (d)
{
Side_position_interface::add_support (me, head);
Pointer_group_interface::add_grob (me, ly_symbol2scm ("dots"), d);
d->set_property ("Y-offset", Grob::x_parent_positioning_proc);
// Dot formatting requests the Y-offset, -which- for rests may
// trigger post-linebreak callbacks.
if (!Rest::has_interface (head))
d->set_property ("X-offset", Grob::x_parent_positioning_proc);
Axis_group_interface::add_element (me, d);
}
}
ADD_INTERFACE (Dot_column,
"Group dot objects so they form a column, and position"
" dots so they do not clash with staff lines.",
/* properties */
"dots "
"positioning-done "
"direction "
);
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