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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1999--2015 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 "script-column.hh"
#include "accidental-placement.hh"
#include "arpeggio.hh"
#include "directional-element-interface.hh"
#include "side-position-interface.hh"
#include "warn.hh"
#include "grob.hh"
#include "pointer-group-interface.hh"
#include <map>
typedef map<Grob *, vector <Grob *> > Grob_scripts_map;
void
Script_column::add_side_positioned (Grob *me, Grob *script)
{
SCM p = script->get_property ("script-priority");
if (!scm_is_number (p))
return;
Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"), script);
script->set_object ("script-column", me->self_scm ());
}
LY_DEFINE (ly_grob_script_priority_less, "ly:grob-script-priority-less",
2, 0, 0, (SCM a, SCM b),
"Compare two grobs by script priority. For internal use.")
{
Grob *i1 = unsmob<Grob> (a);
Grob *i2 = unsmob<Grob> (b);
SCM p1 = i1->get_property ("script-priority");
SCM p2 = i2->get_property ("script-priority");
return scm_to_int (p1) < scm_to_int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
}
MAKE_SCHEME_CALLBACK (Script_column, row_before_line_breaking, 1);
SCM
Script_column::row_before_line_breaking (SCM smob)
{
Grob *me = unsmob<Grob> (smob);
vector<Grob *> horizontal_grobs;
extract_grob_set (me, "scripts", scripts);
Grob_scripts_map head_scripts_map;
vector<Grob *> affect_all_grobs;
for (vsize i = 0; i < scripts.size (); i++)
{
Grob *sc = scripts[i];
/*
Don't want to consider scripts horizontally next to notes.
*/
if (has_interface<Accidental_placement> (sc)
|| has_interface<Arpeggio> (sc))
{
affect_all_grobs.push_back (sc);
}
else if (sc->get_property_data ("Y-offset")
!= Side_position_interface::y_aligned_side_proc)
{
head_scripts_map[sc->get_parent (Y_AXIS)].push_back (sc);
}
}
for (Grob_scripts_map::const_iterator i (head_scripts_map.begin ());
i != head_scripts_map.end ();
i++)
{
vector<Grob *> grobs = (*i).second;
// this isn't right in all cases, but in general a safe assumption.
concat (grobs, affect_all_grobs);
order_grobs (grobs);
}
return SCM_UNSPECIFIED;
}
MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
SCM
Script_column::before_line_breaking (SCM smob)
{
Grob *me = unsmob<Grob> (smob);
vector<Grob *> staff_sided;
extract_grob_set (me, "scripts", scripts);
for (vsize i = 0; i < scripts.size (); i++)
{
Grob *sc = scripts[i];
/*
Don't want to consider scripts horizontally next to notes.
*/
if (sc->get_property_data ("X-offset")
!= Side_position_interface::x_aligned_side_proc)
staff_sided.push_back (sc);
}
order_grobs (staff_sided);
return SCM_UNSPECIFIED;
}
void
Script_column::order_grobs (vector<Grob *> grobs)
{
Drul_array<SCM> scripts_drul (SCM_EOL, SCM_EOL);
for (vsize i = 0; i < grobs.size (); i++)
{
Grob *g = grobs[i];
Direction d = get_grob_direction (g);
scripts_drul[d] = scm_cons (g->self_scm (), scripts_drul[d]);
}
for (DOWN_and_UP (d))
{
SCM ss = scm_reverse_x (scripts_drul[d], SCM_EOL);
ss = scm_stable_sort_x (ss, ly_grob_script_priority_less_proc);
Grob *g = 0; // current grob in list
Grob *last = 0; // previous grob in list
SCM initial_outside_staff = SCM_EOL; // initial outside_staff_priority of current grob
SCM last_initial_outside_staff = SCM_EOL; // initial outside_staff_priority of previous grob
// loop over all grobs in script column (already sorted by script_priority)
for (SCM s = ss; scm_is_pair (s);
s = scm_cdr (s), last = g, last_initial_outside_staff = initial_outside_staff)
{
g = unsmob<Grob> (scm_car (s));
initial_outside_staff = g->get_property ("outside-staff-priority");
if (last) //not the first grob in the list
{
SCM last_outside_staff = last->get_property ("outside-staff-priority");
/*
if outside_staff_priority is missing for previous grob,
use all the scripts so far as support for the current grob
*/
if (!scm_is_number (last_outside_staff))
for (SCM t = ss; !scm_is_eq (t, s); t = scm_cdr (t))
Side_position_interface::add_support (g, unsmob<Grob> (scm_car (t)));
/*
if outside_staff_priority is missing or is equal to original
outside_staff_priority of previous grob, set new
outside_staff_priority to just higher than outside_staff_priority
of previous grob in order to preserve ordering.
*/
else if ((!scm_is_number (initial_outside_staff))
|| (fabs (scm_to_double (initial_outside_staff)
- robust_scm2double (last_initial_outside_staff, 0)) < 0.001))
g->set_property ("outside-staff-priority",
scm_from_double (scm_to_double (last_outside_staff) + 0.1));
}
}
}
}
ADD_INTERFACE (Script_column,
"An interface that sorts scripts according to their"
" @code{script-priority} and @code{outside-staff-priority}.",
/* properties */
"scripts "
);
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