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/*
bar-line.cc -- implement Bar_line
source file of the GNU LilyPond music typesetter
(c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "bar-line.hh"
#include "all-font-metrics.hh"
#include "font-interface.hh"
#include "lookup.hh"
#include "output-def.hh"
#include "paper-column.hh"
#include "staff-symbol-referencer.hh"
MAKE_SCHEME_CALLBACK (Bar_line, print, 1);
SCM
Bar_line::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
SCM s = me->get_property ("glyph-name");
SCM barsize = me->get_property ("bar-size");
if (scm_is_string (s) && scm_is_number (barsize))
{
string str = ly_scm2string (s);
Real sz = robust_scm2double (barsize, 0);
if (sz <= 0)
return SCM_EOL;
return compound_barline (me, str, sz, false).smobbed_copy ();
}
return SCM_EOL;
}
Stencil
Bar_line::compound_barline (Grob *me, string str, Real h,
bool rounded)
{
Real kern = robust_scm2double (me->get_property ("kern"), 1);
Real thinkern = robust_scm2double (me->get_property ("thin-kern"), 1);
Real hair = robust_scm2double (me->get_property ("hair-thickness"), 1);
Real fatline = robust_scm2double (me->get_property ("thick-thickness"), 1);
Real staffline = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
Real staff_space = Staff_symbol_referencer::staff_space (me);
kern *= staffline;
thinkern *= staffline;
hair *= staffline;
fatline *= staffline;
Stencil thin = simple_barline (me, hair, h, rounded);
Stencil thick = simple_barline (me, fatline, h, rounded);
Stencil dot = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
int lines = Staff_symbol_referencer::line_count (me);
Real dist
= ((lines & 1 || lines == 0)
? 1
: (staff_space < 2 ? 2 : .5)) * staff_space;
Stencil colon (dot);
colon.translate_axis (dist, Y_AXIS);
colon.add_stencil (dot);
colon.translate_axis (-dist / 2, Y_AXIS);
Stencil m;
if (str == "||:")
str = "|:";
if (str == "")
return Lookup::blank (Box (Interval (0, 0), Interval (-h / 2, h / 2)));
else if (str == "|")
return thin;
else if (str == "|." || (h == 0 && str == ":|"))
{
m.add_at_edge (X_AXIS, LEFT, thick, 0, 0);
m.add_at_edge (X_AXIS, LEFT, thin, kern, 0);
}
else if (str == ".|" || (h == 0 && str == "|:"))
{
m.add_at_edge (X_AXIS, RIGHT, thick, 0, 0);
m.add_at_edge (X_AXIS, RIGHT, thin, kern, 0);
}
else if (str == ":|")
{
m.add_at_edge (X_AXIS, LEFT, thick, 0, 0);
m.add_at_edge (X_AXIS, LEFT, thin, kern, 0);
m.add_at_edge (X_AXIS, LEFT, colon, kern, 0);
}
else if (str == "|:")
{
m.add_at_edge (X_AXIS, RIGHT, thick, 0, 0);
m.add_at_edge (X_AXIS, RIGHT, thin, kern, 0);
m.add_at_edge (X_AXIS, RIGHT, colon, kern, 0);
}
else if (str == ":|:")
{
m.add_at_edge (X_AXIS, LEFT, thick, thinkern, 0);
m.add_at_edge (X_AXIS, LEFT, colon, kern, 0);
m.add_at_edge (X_AXIS, RIGHT, thick, kern, 0);
m.add_at_edge (X_AXIS, RIGHT, colon, kern, 0);
}
else if (str == ".|.")
{
m.add_at_edge (X_AXIS, LEFT, thick, thinkern, 0);
m.add_at_edge (X_AXIS, RIGHT, thick, kern, 0);
}
else if (str == "||")
{
/*
should align to other side? this never appears
on the system-start?
*/
m.add_at_edge (X_AXIS, RIGHT, thin, 0, 0);
m.add_at_edge (X_AXIS, RIGHT, thin, thinkern, 0);
}
else if (str == ":")
{
int c = (Staff_symbol_referencer::line_count (me));
for (int i = 0; i < c - 1; i++)
{
Real y = (- (c - 1.0) / 2 + 0.5 + i) * staff_space;
Stencil d (dot);
d.translate_axis (y, Y_AXIS);
m.add_stencil (d);
}
}
else if (str == ".")
{
m = dot;
}
return m;
}
Stencil
Bar_line::simple_barline (Grob *me,
Real w,
Real h,
bool rounded)
{
Real blot
= rounded
? me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"))
: 0.0;
return Lookup::round_filled_box (Box (Interval (0, w),
Interval (-h / 2, h / 2)), blot);
}
MAKE_SCHEME_CALLBACK (Bar_line, calc_bar_size, 1);
SCM
Bar_line::calc_bar_size (SCM smob)
{
Grob *me = unsmob_grob (smob);
if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
{
Interval staff_y = staff->extent (staff, Y_AXIS);
return scm_from_double (staff_y.is_empty () ? 0.0 : staff_y.length ());
}
return scm_from_int (0);
}
ADD_INTERFACE (Bar_line,
"bar-line-interface",
"Bar line.\n"
"\n"
"Print a special bar symbol. It replaces the \n"
"regular bar symbol with a special\n"
"symbol. The argument @var{bartype} is a string which specifies the\n"
"kind of bar to print. Options are @code{:|}, \n"
"@code{|:}, @code{:|:},\n"
"@code{||}, @code{|.},\n"
"@code{.|}, and @code{.|.}. \n"
"\n"
"These produce, respectively, a right repeat, a left repeat, a double\n"
"repeat, a double bar, a start bar, an end bar, and a thick double bar.\n"
"If @var{bartype} is set to @code{empty} then nothing is printed,\n"
"but a line break is allowed at that spot.\n",
/* properties */
"kern "
"thin-kern "
"hair-thickness "
"thick-thickness "
"glyph "
"glyph-name "
"bar-size "
);
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