/*
- bar-line.cc -- implement Bar_line
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.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 "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)
+bool
+Bar_line::non_empty_barline (Grob *me)
{
- 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;
+ return me->internal_has_interface (ly_symbol2scm ("bar-line-interface"))
+ && !me->extent (me, X_AXIS).is_empty ();
}
-
-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->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
- 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);
- }
- }
- return m;
-}
-
-Stencil
-Bar_line::simple_barline (Grob *me,
- Real w,
- Real h,
- bool rounded)
-{
- Real blot
- = rounded
- ? me->get_layout ()->get_dimension (ly_symbol2scm ("blotdiameter"))
- : 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);
- Real ss = Staff_symbol_referencer::staff_space (me);
-
- if (Staff_symbol_referencer::get_staff_symbol (me))
- {
- /*
- If there is no staff-symbol, we get -1 from the next
- calculation. That's a nonsense value, which would collapse the
- barline so we return 0.0 in the next alternative.
- */
- Real ysize = (Staff_symbol_referencer::line_count (me) -1);
- ysize = ysize * ss + Staff_symbol_referencer::line_thickness (me);
- return scm_from_double (ysize);
- }
- 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 "
- );
projects / lilypond.git / blobdiff