/*
- system-start-delimiter.cc -- implement System_start_delimiter
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2000--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2000--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.
-#include "system-start-delimiter.hh"
+ 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.
-#include <math.h>
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
-#include "spanner.hh"
+#include "system-start-delimiter.hh"
+#include "text-interface.hh"
+#include "all-font-metrics.hh"
#include "axis-group-interface.hh"
-#include "output-def.hh"
#include "font-interface.hh"
-#include "all-font-metrics.hh"
-#include "staff-symbol-referencer.hh"
-#include "lookup.hh"
#include "item.hh"
-
+#include "line-interface.hh"
+#include "lookup.hh"
+#include "output-def.hh"
#include "pointer-group-interface.hh"
+#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
Stencil
System_start_delimiter::staff_bracket (Grob *me, Real height)
{
Font_metric *fm = Font_interface::get_default_font (me);
+
Drul_array<Stencil> tips (fm->find_by_name ("brackettips.down"),
- fm->find_by_name ("brackettips.up"));
+ fm->find_by_name ("brackettips.up"));
Real thickness = robust_scm2double (me->get_property ("thickness"), 0.25);
Real overlap = 0.1 * thickness;
- Stencil bracket = Lookup::filled_box (Box (Interval (0, thickness),
- Interval (-1, 1)
- * (height / 2 + overlap)));
+ Box box (Interval (0, thickness),
+ Interval (-1, 1)
+ * (height / 2 + overlap));
- Direction d = DOWN;
- do
- bracket.add_at_edge (Y_AXIS, d, tips[d], -overlap, 0.0);
- while (flip (&d) != DOWN)
- ;
+ Stencil bracket = Lookup::filled_box (box);
+ for (DOWN_and_UP (d))
+ bracket.add_at_edge (Y_AXIS, d, tips[d], -overlap);
+ bracket = Stencil (box, bracket.expr ());
+
+ bracket.translate_axis (-0.8, X_AXIS);
return bracket;
}
Stencil
-System_start_delimiter::simple_bar (Grob *me, Real h)
+System_start_delimiter::line_bracket (Grob *me, Real height)
{
- Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
- Real w = lt * robust_scm2double (me->get_property ("thickness"), 1);
- return Lookup::round_filled_box (Box (Interval (0, w), Interval (-h / 2, h / 2)),
- lt);
+ Real thick
+ = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"))
+ * robust_scm2double (me->get_property ("thickness"), 1);
+ Real w = 0.8;
+
+ Stencil tip1 = Line_interface::make_line (thick,
+ Offset (0, -height / 2),
+ Offset (w, -height / 2));
+ Stencil tip2 = Line_interface::make_line (thick,
+ Offset (0, height / 2),
+ Offset (w, height / 2));
+ Stencil vline = Line_interface::make_line (thick,
+ Offset (0, -height / 2),
+ Offset (0, height / 2));
+
+ vline.add_stencil (tip1);
+ vline.add_stencil (tip2);
+ vline.translate_axis (-w, X_AXIS);
+ return vline;
}
-MAKE_SCHEME_CALLBACK (System_start_delimiter, after_line_breaking, 1);
-
-SCM
-System_start_delimiter::after_line_breaking (SCM smob)
+Stencil
+System_start_delimiter::simple_bar (Grob *me, Real h)
{
- Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
-
- SCM gl = me->get_property ("glyph");
- if (ly_is_equal (gl, scm_makfrom0str ("bar-line")))
- {
- int count = 0;
- Paper_column *left_column = me->get_bound (LEFT)->get_column ();
-
-#if 1 /* slur-script.ly test */
- /*
- Get all coordinates, to trigger Hara kiri.
- */
- extract_grob_set (me, "elements", elts);
- Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
-
- for (int i = elts.size (); i--;)
- {
- Spanner *staff = dynamic_cast<Spanner *> (elts[i]);
- if (!staff
- || staff->get_bound (LEFT)->get_column () != left_column)
- continue;
-
- Interval v = staff->extent (common, Y_AXIS);
-
- if (!v.is_empty ())
- count++;
- }
-
- if (count <= 1)
- me->suicide ();
-#endif
- }
- return SCM_UNSPECIFIED;
+ Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+ Real w = lt * robust_scm2double (me->get_property ("thickness"), 1);
+ return Lookup::round_filled_box (Box (Interval (0, w), Interval (-h / 2, h / 2)),
+ lt);
}
MAKE_SCHEME_CALLBACK (System_start_delimiter, print, 1);
System_start_delimiter::print (SCM smob)
{
Spanner *me = unsmob_spanner (smob);
- if (!me)
- return SCM_EOL;
-
- SCM s = me->get_property ("glyph");
- if (!scm_is_string (s))
- return SCM_EOL;
- SCM gsym = scm_string_to_symbol (s);
-
- Real staff_space = Staff_symbol_referencer::staff_space (me);
-
extract_grob_set (me, "elements", elts);
Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
Interval ext;
-
- for (int i = elts.size (); i--;)
+ Real staffspace = 1.0;
+ int non_empty_count = 0;
+ for (vsize i = elts.size (); i--;)
{
Spanner *sp = dynamic_cast<Spanner *> (elts[i]);
+
if (sp
- && sp->get_bound (LEFT) == me->get_bound (LEFT))
- {
- Interval dims = sp->extent (common, Y_AXIS);
- if (!dims.is_empty ())
- ext.unite (dims);
- }
+ && sp->get_bound (LEFT) == me->get_bound (LEFT))
+ {
+ Interval dims = sp->extent (common, Y_AXIS);
+ if (!dims.is_empty ())
+ {
+ non_empty_count++;
+ ext.unite (dims);
+ staffspace = Staff_symbol_referencer::staff_space (sp);
+ }
+ }
}
- ext -= me->relative_coordinate (common, Y_AXIS);
-
- Real len = ext.length () / staff_space;
+ SCM glyph_sym = me->get_property ("style");
+ Real len = ext.length ();
+ // Use collapse-height in multiples of the staff-space
if (ext.is_empty ()
- || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= len))
+ || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= (len / staffspace)))
{
me->suicide ();
- return SCM_EOL;
+ return SCM_UNSPECIFIED;
}
Stencil m;
-
- if (gsym == ly_symbol2scm ("bracket"))
+ if (glyph_sym == ly_symbol2scm ("bracket"))
m = staff_bracket (me, len);
- else if (gsym == ly_symbol2scm ("brace"))
+ else if (glyph_sym == ly_symbol2scm ("brace"))
m = staff_brace (me, len);
- else if (gsym == ly_symbol2scm ("bar-line"))
+ else if (glyph_sym == ly_symbol2scm ("bar-line"))
m = simple_bar (me, len);
+ else if (glyph_sym == ly_symbol2scm ("line-bracket"))
+ m = line_bracket (me, len);
m.translate_axis (ext.center (), Y_AXIS);
return m.smobbed_copy ();
System_start_delimiter::staff_brace (Grob *me, Real y)
{
Font_metric *fm = 0;
- /* We go through the style sheet to lookup the font file
- name. This is better than using find_font directly,
- esp. because that triggers mktextfm for non-existent
- fonts. */
- SCM fam = scm_cons (ly_symbol2scm ("font-encoding"),
- ly_symbol2scm ("fetaBraces"));
-
- SCM alist = scm_list_n (fam, SCM_UNDEFINED);
- fm = select_font (me->get_layout (), scm_list_n (alist, SCM_UNDEFINED));
-
- int lo = 0;
- int hi = max (fm->count () - 1, 2);
- Box b;
+
+ /*
+ Find the default brace font if the user overrides it.
+ */
+ fm = Font_interface::get_default_font (me);
+
+ int
+ lo = 0;
+ int hi = max ((int) fm->count () - 1, 2);
/* do a binary search for each Y, not very efficient, but passable? */
+ Box b;
do
{
int cmp = (lo + hi) / 2;
- b = fm->get_indexed_char (cmp);
+ b = fm->get_indexed_char_dimensions (cmp);
if (b[Y_AXIS].is_empty () || b[Y_AXIS].length () > y)
- hi = cmp;
+ hi = cmp;
else
- lo = cmp;
+ lo = cmp;
}
while (hi - lo > 1);
- Stencil stil (fm->find_by_name ("brace" + to_string (lo)));
- b = stil.extent_box ();
- b[X_AXIS] = Interval (0, 0);
+ Stencil stil (fm->find_by_name ("brace" + ::to_string (lo)));
+ stil.translate_axis (-b[X_AXIS].length () / 2, X_AXIS);
+
+ stil.translate_axis (-0.2, X_AXIS);
- return Stencil (b, stil.expr ());
+ return stil;
}
-ADD_INTERFACE (System_start_delimiter, "system-start-delimiter-interface",
- "The brace, bracket or bar in front of the system. "
- "It is implemented as a spanner.",
- "collapse-height thickness "
- "glyph");
+ADD_INTERFACE (System_start_delimiter,
+ "The brace, bracket or bar in front of the system. The"
+ " following values for @code{style} are recognized:\n"
+ "\n"
+ "@table @code\n"
+ "@item bracket\n"
+ "A thick bracket, normally used to group similar"
+ " instruments in a score. Default for @code{StaffGroup}."
+ " @code{SystemStartBracket} uses this style.\n"
+ "@item brace\n"
+ "A @q{piano style} brace normally used for an instrument"
+ " that uses two staves. The default style for"
+ " @code{GrandStaff}. @code{SystemStartBrace} uses this"
+ " style.\n"
+ "@item bar-line\n"
+ "A simple line between the staves in a score. Default"
+ " for staves enclosed in @code{<<} and @code{>>}."
+ " @code{SystemStartBar} uses this style.\n"
+ "@item line-bracket\n"
+ "A simple square, normally used for subgrouping"
+ " instruments in a score. @code{SystemStartSquare} uses"
+ " this style.\n"
+ "@end table\n"
+ "\n"
+ "See also @file{input/regression/system-start-nesting.ly}.",
+
+ /* properties */
+ "collapse-height "
+ "style "
+ "thickness "
+ );
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