-/*
- system-start-delimiter.cc -- implement System_start_delimiter
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-#include <math.h>
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+
+ Copyright (C) 2000--2012 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 "system-start-delimiter.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
+#include "text-interface.hh"
+#include "all-font-metrics.hh"
#include "axis-group-interface.hh"
+#include "font-interface.hh"
+#include "item.hh"
+#include "line-interface.hh"
#include "lookup.hh"
-#include "all-font-metrics.hh"
+#include "output-def.hh"
+#include "pointer-group-interface.hh"
+#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
-Molecule
-System_start_delimiter::staff_bracket (Real height) const
+Stencil
+System_start_delimiter::staff_bracket (Grob *me, Real height)
{
- Paper_def* p= paper_l ();
- Real arc_height = p->get_var("bracket_arch_height");
- SCM at = gh_list (ly_symbol2scm ("bracket"),
- gh_double2scm (p->get_var("bracket_arch_angle")),
- gh_double2scm (p->get_var("bracket_arch_width")),
- gh_double2scm (arc_height),
- gh_double2scm (p->get_var("bracket_width")),
- gh_double2scm (height),
- gh_double2scm (p->get_var("bracket_arch_thick")),
- gh_double2scm (p->get_var("bracket_thick")),
- SCM_UNDEFINED);
-
- Real staff_space = p->get_var ("interline");
- Real h = height + 2 * arc_height;
- Box b (Interval (0, 1.5 * staff_space), Interval (-h/2, h/2));
- Molecule mol (b, at);
-
- mol.translate_axis (- mol.dim_[X_AXIS].length () / 2, X_AXIS);
- return mol;
+ 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"));
+
+ Real thickness = robust_scm2double (me->get_property ("thickness"), 0.25);
+
+ Real overlap = 0.1 * thickness;
+
+ Box box (Interval (0, thickness),
+ Interval (-1, 1)
+ * (height / 2 + overlap));
+
+ 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;
}
-System_start_delimiter::System_start_delimiter ()
+Stencil
+System_start_delimiter::line_bracket (Grob *me, Real height)
{
- set_empty (Y_AXIS);
+ 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;
}
-Molecule
-System_start_delimiter::simple_bar (Real h) const
+Stencil
+System_start_delimiter::simple_bar (Grob *me, Real h)
{
- Real w = paper_l ()->get_var ("barthick_score");
- return lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
+ 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);
}
-
-Molecule
-System_start_delimiter::do_brew_molecule ()const
+MAKE_SCHEME_CALLBACK (System_start_delimiter, print, 1);
+SCM
+System_start_delimiter::print (SCM smob)
{
- Interval ext = Axis_group_interface::group_extent_callback (dim_cache_[Y_AXIS]);
- Real l = ext.length ();
- Molecule m;
+ Spanner *me = unsmob_spanner (smob);
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
- SCM s = get_elt_property ("collapse-height");
- if (gh_number_p (s) && l < gh_scm2double (s))
+ Interval ext;
+ Real staffspace = 1.0;
+ int non_empty_count = 0;
+ for (vsize i = elts.size (); i--;)
{
- System_start_delimiter * me = (System_start_delimiter*)this;
- me->set_elt_property ("transparent", SCM_BOOL_T);
- me->set_empty (X_AXIS);
- me->set_empty (Y_AXIS);
- return m;
+ 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 ())
+ {
+ non_empty_count++;
+ ext.unite (dims);
+ staffspace = Staff_symbol_referencer::staff_space (sp);
+ }
+ }
}
-
- s = get_elt_property ("glyph");
- if (gh_symbol_p (s) && s == ly_symbol2scm ("bracket"))
- m = staff_bracket (l);
- else if (gh_symbol_p (s) && s == ly_symbol2scm ("brace"))
- m = staff_brace (l);
- else
- m = simple_bar (l);
-
-
+ 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 / staffspace)))
+ {
+ me->suicide ();
+ return SCM_UNSPECIFIED;
+ }
+
+ Stencil m;
+ if (glyph_sym == ly_symbol2scm ("bracket"))
+ m = staff_bracket (me, len);
+ else if (glyph_sym == ly_symbol2scm ("brace"))
+ m = staff_brace (me, len);
+ 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;
+ return m.smobbed_copy ();
}
-/*
- ugh. Suck me plenty.
- */
-Molecule
-System_start_delimiter::staff_brace (Real y) const
+Stencil
+System_start_delimiter::staff_brace (Grob *me, Real y)
{
- Real staffht = paper_l ()->get_var ("staffheight");
- int staff_size = int (rint (staffht ));
-
- // URG
- Real step = 1.0;
- int minht = 2 * staff_size;
- int maxht = 7 * minht;
- int idx = int (((maxht - step) <? y - minht) / step);
- idx = idx >? 0;
-
- SCM l = scm_eval (gh_list (ly_symbol2scm ("style-to-cmr"),
- ly_str02scm ("brace"),
- SCM_UNDEFINED));
-
- String nm = "feta-braces";
- if (l != SCM_BOOL_F)
- nm = ly_scm2string (gh_cdr (l));
- nm += to_str (staff_size);
- SCM e =gh_list (ly_symbol2scm ("char"), gh_int2scm (idx), SCM_UNDEFINED);
- SCM at = (e);
-
- at = fontify_atom (find_font (nm), at);
-
- Box b (Interval (0,0), Interval (-y/2, y/2));
-
- return Molecule(b, at);
+ Font_metric *fm = 0;
+
+ /*
+ 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_dimensions (cmp);
+ if (b[Y_AXIS].is_empty () || b[Y_AXIS].length () > y)
+ hi = cmp;
+ else
+ lo = cmp;
+ }
+ while (hi - lo > 1);
+
+ 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 stil;
}
-
+
+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 "
+ );
projects / lilypond.git / blobdiff