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/*
plet-spanner.cc -- implement Tuplet_spanner
source file of the GNU LilyPond music typesetter
(c) 1997--2000 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "beam.hh"
#include "box.hh"
#include "debug.hh"
#include "font-interface.hh"
#include "molecule.hh"
#include "paper-column.hh"
#include "paper-def.hh"
#include "text-item.hh"
#include "tuplet-spanner.hh"
#include "stem.hh"
#include "note-column.hh"
#include "dimensions.hh"
#include "group-interface.hh"
#include "directional-element-interface.hh"
#include "spanner.hh"
void
Tuplet_spanner::set_interface (Grob*me)
{
me->set_interface (ly_symbol2scm ("tuplet-bracket"));
}
/*
TODO.
*/
MAKE_SCHEME_CALLBACK(Tuplet_spanner,brew_molecule,1);
SCM
Tuplet_spanner::brew_molecule (SCM smob)
{
Grob *me= unsmob_grob (smob);
Molecule mol;
// Default behaviour: number always, bracket when no beam!
bool par_beam = to_boolean (me->get_grob_property ("parallel-beam"));
bool bracket_visibility = !par_beam;
bool number_visibility = true;
SCM bracket = me->get_grob_property ("tuplet-bracket-visibility");
if (gh_boolean_p (bracket))
{
bracket_visibility = gh_scm2bool (bracket);
}
else if (bracket == ly_symbol2scm ("if-no-beam"))
bracket_visibility = !par_beam;
SCM numb = me->get_grob_property ("tuplet-number-visibility");
if (gh_boolean_p (numb))
{
number_visibility = gh_scm2bool (numb);
}
else if (bracket == ly_symbol2scm ("if-no-beam"))
number_visibility = !par_beam;
if (gh_pair_p (me->get_grob_property ("columns")))
{
Link_array<Grob> column_arr=
Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
Real ncw = column_arr.top ()->extent(column_arr.top (), X_AXIS).length ();
Real w = dynamic_cast<Spanner*>(me)->spanner_length () + ncw;
Real staff_space = 1.0;
Direction dir = Directional_element_interface::get (me);
Real dy = gh_scm2double (me->get_grob_property ("delta-y"));
SCM number = me->get_grob_property ("text");
if (gh_string_p (number) && number_visibility)
{
SCM properties = Font_interface::font_alist_chain (me);
Molecule num = Text_item::text2molecule (me, number, properties);
num.align_to (X_AXIS, CENTER);
num.translate_axis (w/2, X_AXIS);
num.align_to (Y_AXIS, CENTER);
num.translate_axis (dir * staff_space, Y_AXIS);
num.translate_axis (dy/2, Y_AXIS);
mol.add_molecule (num);
}
if (bracket_visibility)
{
Real lt = me->paper_l ()->get_var ("stafflinethickness");
SCM thick = me->get_grob_property ("thick");
SCM gap = me->get_grob_property ("number-gap");
SCM at =gh_list(ly_symbol2scm ("tuplet"),
gh_double2scm (1.0),
gap,
gh_double2scm (w),
gh_double2scm (dy),
gh_double2scm (gh_scm2double (thick)* lt),
gh_int2scm (dir),
SCM_UNDEFINED);
Box b;
mol.add_molecule (Molecule (b, at));
}
}
return mol.smobbed_copy ();
}
/*
use first -> last note for slope, and then correct for disturbing
notes in between. */
void
Tuplet_spanner::calc_position_and_height (Grob*me,Real *offset, Real * dy)
{
Link_array<Grob> column_arr=
Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
Grob * commony = me->common_refpoint (me->get_grob_property ("columns"), Y_AXIS);
Grob * commonx = me->common_refpoint (me->get_grob_property ("columns"), X_AXIS);
Direction d = Directional_element_interface::get (me);
/*
Use outer non-rest columns to determine slope
*/
int l = 0;
while (l <column_arr.size() && Note_column::rest_b(column_arr[l]))
l ++;
int r = column_arr.size ()- 1;
while (r >= l && Note_column::rest_b(column_arr[r]))
r--;
if (l < r)
{
*dy = column_arr[r]->extent (commony, Y_AXIS) [d]
- column_arr[l]->extent (commony, Y_AXIS) [d] ;
}
else
* dy = 0;
*offset = - d * infinity_f;
if (!column_arr.size ())
return;
Real x0 = column_arr[0]->relative_coordinate (commonx, X_AXIS);
Real x1 = column_arr.top ()->relative_coordinate (commonx, X_AXIS);
Real factor = column_arr.size () > 1 ? 1/(x1 - x0) : 1.0;
for (int i = 0; i < column_arr.size (); i++)
{
Real notey = column_arr[i]->extent (commony, Y_AXIS)[d]
- me->relative_coordinate (commony, Y_AXIS);
Real x = column_arr[i]->relative_coordinate (commonx, X_AXIS) - x0;
Real tuplety = *dy * x * factor;
if (notey * d > (*offset + tuplety) * d)
*offset = notey - tuplety;
}
}
/*
use first -> last note for slope,
*/
void
Tuplet_spanner::calc_dy (Grob*me,Real * dy)
{
Link_array<Grob> column_arr=
Pointer_group_interface__extract_elements (me, (Grob*)0, "columns");
/*
ugh. refps.
*/
Direction d = Directional_element_interface::get (me);
*dy = column_arr.top ()->extent (column_arr.top (), Y_AXIS) [d]
- column_arr[0]->extent (column_arr[0], Y_AXIS) [d];
}
MAKE_SCHEME_CALLBACK(Tuplet_spanner,after_line_breaking,1);
SCM
Tuplet_spanner::after_line_breaking (SCM smob)
{
Grob * me = unsmob_grob (smob);
Link_array<Note_column> column_arr=
Pointer_group_interface__extract_elements (me, (Note_column*)0, "columns");
Spanner *sp = dynamic_cast<Spanner*> (me);
if (!column_arr.size ())
{
me->suicide ();
return SCM_UNSPECIFIED;
}
Direction d = Directional_element_interface::get (me);
if (!d)
{
d = Tuplet_spanner::get_default_dir (me);
Directional_element_interface::set (me, d);
}
Real dy, offset;
calc_position_and_height (me,&offset,&dy);
me->set_grob_property ("delta-y", gh_double2scm (dy));
me->translate_axis (offset, Y_AXIS);
if (scm_ilength (me->get_grob_property ("beams")) == 1)
{
SCM bs = me->get_grob_property ("beams");
Grob *b = unsmob_grob (gh_car (bs));
Spanner * beam_l = dynamic_cast<Spanner *> (b);
if (!sp->broken_b ()
&& sp->get_bound (LEFT)->column_l () == beam_l->get_bound (LEFT)->column_l ()
&& sp->get_bound (RIGHT)->column_l () == beam_l->get_bound (RIGHT)->column_l ())
me->set_grob_property ("parallel-beam", SCM_BOOL_T);
}
return SCM_UNSPECIFIED;
}
Direction
Tuplet_spanner::get_default_dir (Grob*me)
{
Direction d = UP;
SCM dir_sym =me->get_grob_property ("dir-forced");
if (isdir_b (dir_sym))
{
d= to_dir (dir_sym);
if (d != CENTER)
return d;
}
d = UP ;
for (SCM s = me->get_grob_property ("columns"); gh_pair_p (s); s = gh_cdr (s))
{
Grob * nc = unsmob_grob (gh_car (s));
if (Note_column::dir (nc) < 0)
{
d = DOWN;
break;
}
}
return d;
}
void
Tuplet_spanner::add_beam (Grob*me, Grob *b)
{
me->add_dependency (b);
Pointer_group_interface::add_element (me, "beams",b);
}
void
Tuplet_spanner::add_column (Grob*me, Item*n)
{
Pointer_group_interface::add_element (me, "columns",n);
me->add_dependency (n);
add_bound_item (dynamic_cast<Spanner*> (me), n);
}
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